| Message ID | 1417566590-30529-1-git-send-email-prabhakar.csengg@gmail.com |
|---|---|
| State | Superseded, archived |
| Headers | show |
On Wed, Dec 3, 2014 at 12:29 AM, Lad, Prabhakar <prabhakar.csengg@gmail.com> wrote: > From: Benoit Parrot <bparrot@ti.com> > > This patch adds Video Processing Front End (VPFE) driver for > AM437X family of devices > Driver supports the following: > - V4L2 API using MMAP buffer access based on videobuf2 api > - Asynchronous sensor/decoder sub device registration > - DT support > v4l2-complicance op: root@am437x-evm:~# ./v4l2-compliance -s -i 0 -v Driver Info: Driver name : vpfe [ 69.212320] vpfe 48326000.vpfe: ================= START STATUS ================= Bus info : platform:vpfe 48326000.vpfe [ 69.224520] vpfe 48326000.vpfe: ================== END STATUS ================== Driver version: 3.18.0 Capabilities : 0x85200[ 69.237663] vpfe 48326000.vpfe: invalid input index: 1 001 Video Capture Read/Write Streaming Extended Pix Format Device Capabilities Device Caps : 0x05200001 Video Capture Read/Write Streaming Extended Pix Format Compliance test for device /dev/video0 (not using libv4l2): Required ioctls: test VIDIOC_QUERYCAP: OK Allow for multiple opens: test second video open: OK test VIDIOC_QUERYCAP: OK test VIDIOC_G/S_PRIORITY: OK Debug ioctls: test VIDIOC_DBG_G/S_REGISTER: OK (Not Supported) test VIDIOC_LOG_STATUS: OK Input ioctls: test VIDIOC_G/S_TUNER/ENUM_FREQ_BANDS: OK (Not Supported) test VIDIOC_G/S_FREQUENCY: OK (Not Supported) test VIDIOC_S_HW_FREQ_SEEK: OK (Not Supported) test VIDIOC_ENUMAUDIO: OK (Not Supported) test VIDIOC_G/S/ENUMINPUT: OK test VIDIOC_G/S_AUDIO: OK (Not Supported) Inputs: 1 Audio Inputs: 0 Tuners: 0 Output ioctls: test VIDIOC_G/S_MODULATOR: OK (Not Supported) test VIDIOC_G/S_FREQUENCY: OK (Not Supported) test VIDIOC_ENUMAUDOUT: OK (Not Supported) test VIDIOC_G/S/ENUMOUTPUT: OK (Not Supported) test VIDIOC_G/S_AUDOUT: OK (Not Supported) Outputs: 0 Audio Outputs: 0 Modulators: 0 Input/Output configuration ioctls: test VIDIOC_ENUM/G/S/QUERY_STD: OK test VIDIOC_ENUM/G/S/QUERY_DV_TIMINGS: OK (Not Supported) test VIDIOC_DV_TIMINGS_CAP: OK (Not Supported) test VIDIOC_G/S_EDID: OK (Not Supported) Test input 0: Control ioctls: test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK (Not Supported) test VIDIOC_QUERYCTRL: OK (Not Supported) test VIDIOC_G/S_CTRL: OK (Not Supported) test VIDIOC_G/S/TRY_EXT_CTRLS: OK (Not Supported) test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK (Not Supported) test VIDIOC_G/S_JPEGCOMP: OK (Not Supported) Standard Controls: 0 Private Controls: 0 Format ioctls: info: found 7 framesizes for pixel format 56595559 info: found 7 framesizes for pixel format 59565955 info: found 7 framesizes for pixel format 52424752 info: found 7 framesizes for pixel format 31384142 info: found 4 formats for buftype 1 test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK test VIDIOC_G/S_PARM: OK test VIDIOC_G_FBUF: OK (Not Supported) test VIDIOC_G_FMT: OK test VIDIOC_TRY_FMT: OK info: Could not perform global format test test VIDIOC_S_FMT: OK test VIDIOC_G_SLICED_VBI_CAP: OK (Not Supported) Codec ioctls: test VIDIOC_(TRY_)ENCODER_CMD: OK (Not Supported) test VIDIOC_G_ENC_INDEX: OK (Not Supported) test VIDIOC_(TRY_)DECODER_CMD: OK (Not Supported) Buffer ioctls: info: test buftype Video Capture test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK test VIDIOC_EXPBUF: OK Streaming ioctls: test read/write: OK Video Capture: Buffer: 0 Sequence: 0 Field: None Timestamp: 73.805968s Buffer: 1 Sequence: 1 Field: None Timestamp: 73.828843s Buffer: 2 Sequence: 2 Field: None Timestamp: 73.851723s Buffer: 3 Sequence: 3 Field: None Timestamp: 74.057647s Buffer: 0 Sequence: 4 Field: None Timestamp: 74.080531s Buffer: 1 Sequence: 5 Field: None Timestamp: 74.103409s Buffer: 2 Sequence: 6 Field: None Timestamp: 74.126289s Buffer: 3 Sequence: 7 Field: None Timestamp: 74.149169s Buffer: 0 Sequence: 8 Field: None Timestamp: 74.172051s Buffer: 1 Sequence: 9 Field: None Timestamp: 74.194930s Buffer: 2 Sequence: 10 Field: None Timestamp: 74.217811s Buffer: 3 Sequence: 11 Field: None Timestamp: 74.240692s Buffer: 0 Sequence: 12 Field: None Timestamp: 74.263571s Buffer: 1 Sequence: 13 Field: None Timestamp: 74.286452s Buffer: 2 Sequence: 14 Field: None Timestamp: 74.309332s Buffer: 3 Sequence: 15 Field: None Timestamp: 74.332213s Buffer: 0 Sequence: 16 Field: None Timestamp: 74.355093s Buffer: 1 Sequence: 17 Field: None Timestamp: 74.377973s Buffer: 2 Sequence: 18 Field: None Timestamp: 74.400855s Buffer: 3 Sequence: 19 Field: None Timestamp: 74.423734s Buffer: 0 Sequence: 20 Field: None Timestamp: 74.446614s Buffer: 1 Sequence: 21 Field: None Timestamp: 74.469495s Buffer: 2 Sequence: 22 Field: None Timestamp: 74.492375s Buffer: 3 Sequence: 23 Field: None Timestamp: 74.515255s Buffer: 0 Sequence: 24 Field: None Timestamp: 74.538136s Buffer: 1 Sequence: 25 Field: None Timestamp: 74.561019s Buffer: 2 Sequence: 26 Field: None Timestamp: 74.583897s Buffer: 3 Sequence: 27 Field: None Timestamp: 74.606777s Buffer: 0 Sequence: 28 Field: None Timestamp: 74.629657s Buffer: 1 Sequence: 29 Field: None Timestamp: 74.652538s Buffer: 2 Sequence: 30 Field: None Timestamp: 74.675418s Buffer: 3 Sequence: 31 Field: None Timestamp: 74.698298s Buffer: 0 Sequence: 32 Field: None Timestamp: 74.721180s Buffer: 1 Sequence: 33 Field: None Timestamp: 74.744059s Buffer: 2 Sequence: 34 Field: None Timestamp: 74.766939s Buffer: 3 Sequence: 35 Field: None Timestamp: 74.789821s Buffer: 0 Sequence: 36 Field: None Timestamp: 74.812700s Buffer: 1 Sequence: 37 Field: None Timestamp: 74.835581s Buffer: 2 Sequence: 38 Field: None Timestamp: 74.858461s Buffer: 3 Sequence: 39 Field: None Timestamp: 74.881342s Buffer: 0 Sequence: 40 Field: None Timestamp: 74.904222s Buffer: 1 Sequence: 41 Field: None Timestamp: 74.927102s Buffer: 2 Sequence: 42 Field: None Timestamp: 74.949982s Buffer: 3 Sequence: 43 Field: None Timestamp: 74.972863s Buffer: 0 Sequence: 44 Field: None Timestamp: 74.995743s Buffer: 1 Sequence: 45 Field: None Timestamp: 75.018624s Buffer: 2 Sequence: 46 Field: None Timestamp: 75.041504s Buffer: 3 Sequence: 47 Field: None Timestamp: 75.064387s Buffer: 0 Sequence: 48 Field: None Timestamp: 75.087266s Buffer: 1 Sequence: 49 Field: None Timestamp: 75.110146s Buffer: 2 Sequence: 50 Field: None Timestamp: 75.133025s Buffer: 3 Sequence: 51 Field: None Timestamp: 75.155906s Buffer: 0 Sequence: 52 Field: None Timestamp: 75.178788s Buffer: 1 Sequence: 53 Field: None Timestamp: 75.201668s Buffer: 2 Sequence: 54 Field: None Timestamp: 75.224547s Buffer: 3 Sequence: 55 Field: None Timestamp: 75.247427s Buffer: 0 Sequence: 56 Field: None Timestamp: 75.270308s Buffer: 1 Sequence: 57 Field: None Timestamp: 75.293188s Buffer: 2 Sequence: 58 Field: None Timestamp: 75.316068s Buffer: 3 Sequence: 59 Field: None Timestamp: 75.338949s Video Capture (polling): Buffer: 0 Sequence: 60 Field: None Timestamp: 75.361829s Buffer: 1 Sequence: 61 Field: None Timestamp: 75.384710s Buffer: 2 Sequence: 62 Field: None Timestamp: 75.407590s Buffer: 3 Sequence: 63 Field: None Timestamp: 75.430471s Buffer: 0 Sequence: 64 Field: None Timestamp: 75.453350s Buffer: 1 Sequence: 65 Field: None Timestamp: 75.476231s Buffer: 2 Sequence: 66 Field: None Timestamp: 75.499111s Buffer: 3 Sequence: 67 Field: None Timestamp: 75.521991s Buffer: 0 Sequence: 68 Field: None Timestamp: 75.544872s Buffer: 1 Sequence: 69 Field: None Timestamp: 75.567754s Buffer: 2 Sequence: 70 Field: None Timestamp: 75.590634s Buffer: 3 Sequence: 71 Field: None Timestamp: 75.613513s Buffer: 0 Sequence: 72 Field: None Timestamp: 75.636393s Buffer: 1 Sequence: 73 Field: None Timestamp: 75.659274s Buffer: 2 Sequence: 74 Field: None Timestamp: 75.682154s Buffer: 3 Sequence: 75 Field: None Timestamp: 75.705035s Buffer: 0 Sequence: 76 Field: None Timestamp: 75.727915s Buffer: 1 Sequence: 77 Field: None Timestamp: 75.750796s Buffer: 2 Sequence: 78 Field: None Timestamp: 75.773675s Buffer: 3 Sequence: 79 Field: None Timestamp: 75.796556s Buffer: 0 Sequence: 80 Field: None Timestamp: 75.819436s Buffer: 1 Sequence: 81 Field: None Timestamp: 75.842317s Buffer: 2 Sequence: 82 Field: None Timestamp: 75.865197s Buffer: 3 Sequence: 83 Field: None Timestamp: 75.888077s Buffer: 0 Sequence: 84 Field: None Timestamp: 75.910959s Buffer: 1 Sequence: 85 Field: None Timestamp: 75.933838s Buffer: 2 Sequence: 86 Field: None Timestamp: 75.956718s Buffer: 3 Sequence: 87 Field: None Timestamp: 75.979599s Buffer: 0 Sequence: 88 Field: None Timestamp: 76.002479s Buffer: 1 Sequence: 89 Field: None Timestamp: 76.025360s Buffer: 2 Sequence: 90 Field: None Timestamp: 76.048243s Buffer: 3 Sequence: 91 Field: None Timestamp: 76.071122s Buffer: 0 Sequence: 92 Field: None Timestamp: 76.094000s Buffer: 1 Sequence: 93 Field: None Timestamp: 76.116881s Buffer: 2 Sequence: 94 Field: None Timestamp: 76.139761s Buffer: 3 Sequence: 95 Field: None Timestamp: 76.162642s Buffer: 0 Sequence: 96 Field: None Timestamp: 76.185522s Buffer: 1 Sequence: 97 Field: None Timestamp: 76.208402s Buffer: 2 Sequence: 98 Field: None Timestamp: 76.231284s Buffer: 3 Sequence: 99 Field: None Timestamp: 76.254163s Buffer: 0 Sequence: 100 Field: None Timestamp: 76.277044s Buffer: 1 Sequence: 101 Field: None Timestamp: 76.299924s Buffer: 2 Sequence: 102 Field: None Timestamp: 76.322805s Buffer: 3 Sequence: 103 Field: None Timestamp: 76.345685s Buffer: 0 Sequence: 104 Field: None Timestamp: 76.368565s Buffer: 1 Sequence: 105 Field: None Timestamp: 76.391447s Buffer: 2 Sequence: 106 Field: None Timestamp: 76.414326s Buffer: 3 Sequence: 107 Field: None Timestamp: 76.437206s Buffer: 0 Sequence: 108 Field: None Timestamp: 76.460087s Buffer: 1 Sequence: 109 Field: None Timestamp: 76.482967s Buffer: 2 Sequence: 110 Field: None Timestamp: 76.505847s Buffer: 3 Sequence: 111 Field: None Timestamp: 76.528727s Buffer: 0 Sequence: 112 Field: None Timestamp: 76.551607s Buffer: 1 Sequence: 113 Field: None Timestamp: 76.574488s Buffer: 2 Sequence: 114 Field: None Timestamp: 76.597369s Buffer: 3 Sequence: 115 Field: None Timestamp: 76.620250s Buffer: 0 Sequence: 116 Field: None Timestamp: 76.643129s Buffer: 1 Sequence: 117 Field: None Timestamp: 76.666010s Buffer: 2 Sequence: 118 Field: None Timestamp: 76.688890s Buffer: 3 Sequence: 119 Field: None Timestamp: 76.711771s test MMAP: OK test USERPTR: OK (Not Supported) test DMABUF: Cannot test, specify --expbuf-device Total: 42, Succeeded: 42, Failed: 0, Warnings: 0 Thanks, --Prabhakar Lad -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On 12/03/14 01:29, Lad, Prabhakar wrote: > From: Benoit Parrot <bparrot@ti.com> > > This patch adds Video Processing Front End (VPFE) driver for > AM437X family of devices > Driver supports the following: > - V4L2 API using MMAP buffer access based on videobuf2 api > - Asynchronous sensor/decoder sub device registration > - DT support > > Signed-off-by: Benoit Parrot <bparrot@ti.com> > Signed-off-by: Darren Etheridge <detheridge@ti.com> > Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> > --- > Changes for v2: > a> Fixed review comments pointed by Hans. > > .../devicetree/bindings/media/ti-am437x-vpfe.txt | 61 + > MAINTAINERS | 9 + > drivers/media/platform/Kconfig | 1 + > drivers/media/platform/Makefile | 2 + > drivers/media/platform/am437x/Kconfig | 11 + > drivers/media/platform/am437x/Makefile | 2 + > drivers/media/platform/am437x/am437x-vpfe.c | 2785 ++++++++++++++++++++ > drivers/media/platform/am437x/am437x-vpfe.h | 287 ++ > drivers/media/platform/am437x/am437x-vpfe_regs.h | 140 + > include/uapi/linux/Kbuild | 1 + > include/uapi/linux/am437x-vpfe.h | 122 + > 11 files changed, 3421 insertions(+) > create mode 100644 Documentation/devicetree/bindings/media/ti-am437x-vpfe.txt > create mode 100644 drivers/media/platform/am437x/Kconfig > create mode 100644 drivers/media/platform/am437x/Makefile > create mode 100644 drivers/media/platform/am437x/am437x-vpfe.c > create mode 100644 drivers/media/platform/am437x/am437x-vpfe.h > create mode 100644 drivers/media/platform/am437x/am437x-vpfe_regs.h > create mode 100644 include/uapi/linux/am437x-vpfe.h > > diff --git a/Documentation/devicetree/bindings/media/ti-am437x-vpfe.txt b/Documentation/devicetree/bindings/media/ti-am437x-vpfe.txt > new file mode 100644 > index 0000000..3932e76 > --- /dev/null > +++ b/Documentation/devicetree/bindings/media/ti-am437x-vpfe.txt > @@ -0,0 +1,61 @@ > +Texas Instruments AM437x CAMERA (VPFE) > +-------------------------------------- > + > +The Video Processing Front End (VPFE) is a key component for image capture > +applications. The capture module provides the system interface and the > +processing capability to connect RAW image-sensor modules and video decoders > +to the AM437x device. > + > +Required properties: > +- compatible: must be "ti,am437x-vpfe" > +- reg: physical base address and length of the registers set for the device; > +- interrupts: should contain IRQ line for the VPFE; > +- ti,am437x-vpfe-interface: can be one of the following, > + 0 - Raw Bayer Interface. > + 1 - 8 Bit BT656 Interface. > + 2 - 10 Bit BT656 Interface. > + 3 - YCbCr 8 Bit Interface. > + 4 - YCbCr 16 Bit Interface. > + > +VPFE supports a single port node with parallel bus. It should contain one > +'port' child node with child 'endpoint' node. Please refer to the bindings > +defined in Documentation/devicetree/bindings/media/video-interfaces.txt. > + > +Example: > + vpfe: vpfe@f0034000 { > + compatible = "ti,am437x-vpfe"; > + reg = <0x48328000 0x2000>; > + interrupts = <GIC_SPI 50 IRQ_TYPE_LEVEL_HIGH>; > + > + pinctrl-names = "default", "sleep"; > + pinctrl-0 = <&vpfe_pins_default>; > + pinctrl-1 = <&vpfe_pins_sleep>; > + > + port { > + #address-cells = <1>; > + #size-cells = <0>; > + > + vpfe0_ep: endpoint { > + remote-endpoint = <&ov2659_1>; > + ti,am437x-vpfe-interface = <0>; > + bus-width = <8>; > + hsync-active = <0>; > + vsync-active = <0>; > + }; > + }; > + }; > + > + i2c1: i2c@4802a000 { > + > + ov2659@30 { > + compatible = "ti,ov2659"; > + reg = <0x30>; > + > + port { > + ov2659_1: endpoint { > + remote-endpoint = <&vpfe0_ep>; > + bus-width = <8>; > + mclk-frequency = <12000000>; > + }; > + }; > + }; > diff --git a/MAINTAINERS b/MAINTAINERS > index a6288ca..a42d367 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -8537,6 +8537,15 @@ S: Maintained > F: drivers/media/platform/davinci/ > F: include/media/davinci/ > > +TI AM437X VPFE DRIVER > +M: Lad, Prabhakar <prabhakar.csengg@gmail.com> > +L: linux-media@vger.kernel.org > +W: http://linuxtv.org/ > +Q: http://patchwork.linuxtv.org/project/linux-media/list/ > +T: git git://linuxtv.org/mhadli/v4l-dvb-davinci_devices.git > +S: Maintained > +F: drivers/media/platform/am437x/ > + > SIS 190 ETHERNET DRIVER > M: Francois Romieu <romieu@fr.zoreil.com> > L: netdev@vger.kernel.org > diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig > index 0c61155..6d94045 100644 > --- a/drivers/media/platform/Kconfig > +++ b/drivers/media/platform/Kconfig > @@ -126,6 +126,7 @@ config VIDEO_S3C_CAMIF > source "drivers/media/platform/soc_camera/Kconfig" > source "drivers/media/platform/exynos4-is/Kconfig" > source "drivers/media/platform/s5p-tv/Kconfig" > +source "drivers/media/platform/am437x/Kconfig" > > endif # V4L_PLATFORM_DRIVERS > > diff --git a/drivers/media/platform/Makefile b/drivers/media/platform/Makefile > index b818afb..7bb6d46 100644 > --- a/drivers/media/platform/Makefile > +++ b/drivers/media/platform/Makefile > @@ -49,4 +49,6 @@ obj-$(CONFIG_VIDEO_RENESAS_VSP1) += vsp1/ > > obj-y += omap/ > > +obj-$(CONFIG_VIDEO_AM437X_VPFE) += am437x/ > + > ccflags-y += -I$(srctree)/drivers/media/i2c > diff --git a/drivers/media/platform/am437x/Kconfig b/drivers/media/platform/am437x/Kconfig > new file mode 100644 > index 0000000..97dea72 > --- /dev/null > +++ b/drivers/media/platform/am437x/Kconfig > @@ -0,0 +1,11 @@ > +config VIDEO_AM437X_VPFE > + tristate "TI AM437x VPFE video capture driver" > + depends on VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API > + depends on SOC_AM43XX || COMPILE_TEST > + select VIDEOBUF2_DMA_CONTIG > + help > + Support for AM437x Video Processing Front End based Video > + Capture Driver. > + > + To compile this driver as a module, choose M here. The module > + will be called ti_vpfe. > diff --git a/drivers/media/platform/am437x/Makefile b/drivers/media/platform/am437x/Makefile > new file mode 100644 > index 0000000..3c6b7bd > --- /dev/null > +++ b/drivers/media/platform/am437x/Makefile > @@ -0,0 +1,2 @@ > +ti-vpfe-y := am437x-vpfe.o > +obj-$(CONFIG_VIDEO_AM437X_VPFE) += ti-vpfe.o > diff --git a/drivers/media/platform/am437x/am437x-vpfe.c b/drivers/media/platform/am437x/am437x-vpfe.c > new file mode 100644 > index 0000000..f3db23d > --- /dev/null > +++ b/drivers/media/platform/am437x/am437x-vpfe.c > @@ -0,0 +1,2785 @@ > +/* > + * TI VPFE capture Driver > + * > + * Copyright (C) 2013 - 2014 Texas Instruments, Inc. > + * > + * Benoit Parrot <bparrot@ti.com> > + * Lad, Prabhakar <prabhakar.csengg@gmail.com> > + * > + * This program is free software; you may redistribute it and/or modify > + * it under the terms of the GNU General Public License as published by > + * the Free Software Foundation; version 2 of the License. > + * > + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, > + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF > + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND > + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS > + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN > + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN > + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE > + * SOFTWARE. > + */ > + > +#include <linux/delay.h> > +#include <linux/err.h> > +#include <linux/init.h> > +#include <linux/interrupt.h> > +#include <linux/io.h> > +#include <linux/module.h> > +#include <linux/platform_device.h> > +#include <linux/pm_runtime.h> > +#include <linux/slab.h> > +#include <linux/uaccess.h> > +#include <linux/videodev2.h> > + > +#include <media/v4l2-common.h> > +#include <media/v4l2-ctrls.h> > +#include <media/v4l2-event.h> > +#include <media/v4l2-of.h> > + > +#include "am437x-vpfe.h" > + > +#define VPFE_MODULE_NAME "vpfe" > +#define VPFE_VERSION "0.1.0" > + > +static int debug; > +module_param(debug, int, 0644); > +MODULE_PARM_DESC(debug, "Debug level 0-8"); > + > +#define vpfe_dbg(level, dev, fmt, arg...) \ > + v4l2_dbg(level, debug, &dev->v4l2_dev, fmt, ##arg) > +#define vpfe_info(dev, fmt, arg...) \ > + v4l2_info(&dev->v4l2_dev, fmt, ##arg) > +#define vpfe_err(dev, fmt, arg...) \ > + v4l2_err(&dev->v4l2_dev, fmt, ##arg) > + > +/* standard information */ > +struct vpfe_standard { > + v4l2_std_id std_id; > + unsigned int width; > + unsigned int height; > + struct v4l2_fract pixelaspect; > + int frame_format; > +}; > + > +const struct vpfe_standard vpfe_standards[] = { > + {V4L2_STD_525_60, 720, 480, {11, 10}, 1}, > + {V4L2_STD_625_50, 720, 576, {54, 59}, 1}, > +}; > + > +struct bus_format { > + unsigned int width; > + unsigned int bpp; > +}; > + > +/* > + * struct vpfe_fmt - VPFE media bus format information > + * @name: V4L2 format description > + * @code: V4L2 media bus format code > + * @shifted: V4L2 media bus format code for the same pixel layout but > + * shifted to be 8 bits per pixel. =0 if format is not shiftable. > + * @pixelformat: V4L2 pixel format FCC identifier > + * @width: Bits per pixel (when transferred over a bus) > + * @bpp: Bytes per pixel (when stored in memory) > + * @supported: Indicates format supported by subdev > + */ > +struct vpfe_fmt { > + const char *name; > + u32 fourcc; > + u32 code; > + struct bus_format l; > + struct bus_format s; > + bool supported; > + u32 index; > +}; > + > +static struct vpfe_fmt formats[] = { > + { > + .name = "YUV 4:2:2 packed, YCbYCr", > + .fourcc = V4L2_PIX_FMT_YUYV, > + .code = MEDIA_BUS_FMT_YUYV8_2X8, > + .l.width = 10, > + .l.bpp = 4, > + .s.width = 8, > + .s.bpp = 2, > + .supported = false, > + }, { > + .name = "YUV 4:2:2 packed, CbYCrY", > + .fourcc = V4L2_PIX_FMT_UYVY, > + .code = MEDIA_BUS_FMT_UYVY8_2X8, > + .l.width = 10, > + .l.bpp = 4, > + .s.width = 8, > + .s.bpp = 2, > + .supported = false, > + }, { > + .name = "YUV 4:2:2 packed, YCrYCb", > + .fourcc = V4L2_PIX_FMT_YVYU, > + .code = MEDIA_BUS_FMT_YVYU8_2X8, > + .l.width = 10, > + .l.bpp = 4, > + .s.width = 8, > + .s.bpp = 2, > + .supported = false, > + }, { > + .name = "YUV 4:2:2 packed, CrYCbY", > + .fourcc = V4L2_PIX_FMT_VYUY, > + .code = MEDIA_BUS_FMT_VYUY8_2X8, > + .l.width = 10, > + .l.bpp = 4, > + .s.width = 8, > + .s.bpp = 2, > + .supported = false, > + }, { > + .name = "RAW8 BGGR", > + .fourcc = V4L2_PIX_FMT_SBGGR8, > + .code = MEDIA_BUS_FMT_SBGGR8_1X8, > + .l.width = 10, > + .l.bpp = 2, > + .s.width = 8, > + .s.bpp = 1, > + .supported = false, > + }, { > + .name = "RAW8 GBRG", > + .fourcc = V4L2_PIX_FMT_SGBRG8, > + .code = MEDIA_BUS_FMT_SGBRG8_1X8, > + .l.width = 10, > + .l.bpp = 2, > + .s.width = 8, > + .s.bpp = 1, > + .supported = false, > + }, { > + .name = "RAW8 GRBG", > + .fourcc = V4L2_PIX_FMT_SGRBG8, > + .code = MEDIA_BUS_FMT_SGRBG8_1X8, > + .l.width = 10, > + .l.bpp = 2, > + .s.width = 8, > + .s.bpp = 1, > + .supported = false, > + }, { > + .name = "RAW8 RGGB", > + .fourcc = V4L2_PIX_FMT_SRGGB8, > + .code = MEDIA_BUS_FMT_SRGGB8_1X8, > + .l.width = 10, > + .l.bpp = 2, > + .s.width = 8, > + .s.bpp = 1, > + .supported = false, > + }, { > + .name = "RGB565 (LE)", > + .fourcc = V4L2_PIX_FMT_RGB565, > + .code = MEDIA_BUS_FMT_RGB565_2X8_LE, > + .l.width = 10, > + .l.bpp = 4, > + .s.width = 8, > + .s.bpp = 2, > + .supported = false, > + }, { > + .name = "RGB565 (BE)", > + .fourcc = V4L2_PIX_FMT_RGB565X, > + .code = MEDIA_BUS_FMT_RGB565_2X8_BE, > + .l.width = 10, > + .l.bpp = 4, > + .s.width = 8, > + .s.bpp = 2, > + .supported = false, > + }, > +}; > + > +static int > +__vpfe_get_format(struct vpfe_device *vpfe, > + struct v4l2_format *format, unsigned int *bpp); > + > +static struct vpfe_fmt *find_format_by_code(unsigned int code, bool set) > +{ > + struct vpfe_fmt *fmt; > + static u32 index; > + unsigned int k; > + > + for (k = 0; k < ARRAY_SIZE(formats); k++) { > + fmt = &formats[k]; > + if (fmt->code == code) { > + if (set) { > + fmt->supported = true; > + fmt->index = index++; > + } It's ugly and unexpected to set these fields here. Why not do that where you actually need it? E.g. instead of calling find_format_by_code(code, true) do: fmt = find_format_by_code(code); if (fmt) { fmt->supported = true; fmt->index = index++; } That's much cleaner. > + return fmt; > + } > + } > + > + return NULL; > +} > + > +static struct vpfe_fmt *find_format_by_pix(unsigned int pixelformat) > +{ > + struct vpfe_fmt *fmt; > + unsigned int k; > + > + for (k = 0; k < ARRAY_SIZE(formats); k++) { > + fmt = &formats[k]; > + if (fmt->fourcc == pixelformat) > + return fmt; > + } > + > + return NULL; > +} > + > +static void > +mbus_to_pix(struct vpfe_device *vpfe, > + const struct v4l2_mbus_framefmt *mbus, > + struct v4l2_pix_format *pix, unsigned int *bpp) > +{ > + struct vpfe_subdev_info *sdinfo = vpfe->current_subdev; > + unsigned int bus_width = sdinfo->vpfe_param.bus_width; > + struct vpfe_fmt *fmt; > + > + memset(pix, 0, sizeof(*pix)); > + pix->width = mbus->width; > + pix->height = mbus->height; > + > + fmt = find_format_by_code(mbus->code, false); > + if (WARN_ON(fmt == NULL)) { > + pr_err("Invalid mbus code set\n"); > + *bpp = 1; > + return; > + } > + > + pix->colorspace = mbus->colorspace; > + pix->field = mbus->field; Use the v4l2_fill_pix_format helper (media/v4l2-mediabus.h). That will also fill in the new ycbcr_enc and quantization fields. > + pix->pixelformat = fmt->fourcc; > + *bpp = (bus_width == 10) ? fmt->l.bpp : fmt->s.bpp; > + > + pix->bytesperline = pix->width * *bpp; > + /* pitch should be 32 bytes aligned */ > + pix->bytesperline = ALIGN(pix->bytesperline, 32); > + pix->sizeimage = pix->bytesperline * pix->height; > +} > + > +static int > +pix_to_mbus(struct vpfe_device *vpfe, > + struct v4l2_pix_format *pix, > + struct v4l2_mbus_framefmt *mbus) > +{ > + struct vpfe_fmt *fmt; > + > + memset(mbus, 0, sizeof(*mbus)); > + mbus->width = pix->width; > + mbus->height = pix->height; > + > + fmt = find_format_by_pix(pix->pixelformat); > + if (!fmt) { > + /* default to first entry */ > + vpfe_dbg(3, vpfe, "Invalid pixel code: %x, default used instead\n", > + pix->pixelformat); > + fmt = &formats[0]; > + } > + > + mbus->code = fmt->code; > + mbus->colorspace = pix->colorspace; > + mbus->field = pix->field; Use v4l2_fill_mbus_format(). > + > + return 0; > +} > + > +/* Print Four-character-code (FOURCC) */ > +static char *print_fourcc(u32 fmt) > +{ > + static char code[5]; > + > + code[0] = (unsigned char)(fmt & 0xff); > + code[1] = (unsigned char)((fmt >> 8) & 0xff); > + code[2] = (unsigned char)((fmt >> 16) & 0xff); > + code[3] = (unsigned char)((fmt >> 24) & 0xff); > + code[4] = '\0'; > + > + return code; > +} > + > +static int > +cmp_v4l2_format(const struct v4l2_format *lhs, const struct v4l2_format *rhs) > +{ > + return lhs->type == rhs->type && > + lhs->fmt.pix.width == rhs->fmt.pix.width && > + lhs->fmt.pix.height == rhs->fmt.pix.height && > + lhs->fmt.pix.pixelformat == rhs->fmt.pix.pixelformat && > + lhs->fmt.pix.field == rhs->fmt.pix.field && > + lhs->fmt.pix.colorspace == rhs->fmt.pix.colorspace; > +} > + > +static inline u32 vpfe_reg_read(struct vpfe_ccdc *ccdc, u32 offset) > +{ > + return ioread32(ccdc->ccdc_cfg.base_addr + offset); > +} > + > +static inline void vpfe_reg_write(struct vpfe_ccdc *ccdc, u32 val, u32 offset) > +{ > + iowrite32(val, ccdc->ccdc_cfg.base_addr + offset); > +} > + > +static inline struct vpfe_device *to_vpfe(struct vpfe_ccdc *ccdc) > +{ > + return container_of(ccdc, struct vpfe_device, ccdc); > +} > + > +static inline struct vpfe_cap_buffer *to_vpfe_buffer(struct vb2_buffer *vb) > +{ > + return container_of(vb, struct vpfe_cap_buffer, vb); > +} > + > +static inline void vpfe_pcr_enable(struct vpfe_ccdc *ccdc, int flag) > +{ > + vpfe_reg_write(ccdc, !!flag, VPFE_PCR); > +} > + > +static void vpfe_config_enable(struct vpfe_ccdc *ccdc, int flag) > +{ > + unsigned int cfg; > + > + if (!flag) { > + cfg = vpfe_reg_read(ccdc, VPFE_CONFIG); > + cfg &= ~(VPFE_CONFIG_EN_ENABLE << VPFE_CONFIG_EN_SHIFT); > + } else { > + cfg = VPFE_CONFIG_EN_ENABLE << VPFE_CONFIG_EN_SHIFT; > + } > + > + vpfe_reg_write(ccdc, cfg, VPFE_CONFIG); > +} > + > +static void vpfe_ccdc_setwin(struct vpfe_ccdc *ccdc, > + struct v4l2_rect *image_win, > + enum ccdc_frmfmt frm_fmt, > + int bpp) > +{ > + int horz_start, horz_nr_pixels; > + int vert_start, vert_nr_lines; > + int val, mid_img; > + > + /* > + * ppc - per pixel count. indicates how many pixels per cell > + * output to SDRAM. example, for ycbcr, it is one y and one c, so 2. > + * raw capture this is 1 > + */ > + horz_start = image_win->left * bpp; > + horz_nr_pixels = (image_win->width * bpp) - 1; > + vpfe_reg_write(ccdc, (horz_start << VPFE_HORZ_INFO_SPH_SHIFT) | > + horz_nr_pixels, VPFE_HORZ_INFO); > + > + vert_start = image_win->top; > + > + if (frm_fmt == CCDC_FRMFMT_INTERLACED) { > + vert_nr_lines = (image_win->height >> 1) - 1; > + vert_start >>= 1; > + /* Since first line doesn't have any data */ > + vert_start += 1; > + /* configure VDINT0 */ > + val = (vert_start << VPFE_VDINT_VDINT0_SHIFT); > + } else { > + /* Since first line doesn't have any data */ > + vert_start += 1; > + vert_nr_lines = image_win->height - 1; > + /* > + * configure VDINT0 and VDINT1. VDINT1 will be at half > + * of image height > + */ > + mid_img = vert_start + (image_win->height / 2); > + val = (vert_start << VPFE_VDINT_VDINT0_SHIFT) | > + (mid_img & VPFE_VDINT_VDINT1_MASK); > + } > + > + vpfe_reg_write(ccdc, val, VPFE_VDINT); > + > + vpfe_reg_write(ccdc, (vert_start << VPFE_VERT_START_SLV0_SHIFT) | > + vert_start, VPFE_VERT_START); > + vpfe_reg_write(ccdc, vert_nr_lines, VPFE_VERT_LINES); > +} > + > +static void vpfe_reg_dump(struct vpfe_ccdc *ccdc) > +{ > + struct vpfe_device *vpfe = to_vpfe(ccdc); > + > + vpfe_dbg(3, vpfe, "ALAW: 0x%x\n", vpfe_reg_read(ccdc, VPFE_ALAW)); > + vpfe_dbg(3, vpfe, "CLAMP: 0x%x\n", vpfe_reg_read(ccdc, VPFE_CLAMP)); > + vpfe_dbg(3, vpfe, "DCSUB: 0x%x\n", vpfe_reg_read(ccdc, VPFE_DCSUB)); > + vpfe_dbg(3, vpfe, "BLKCMP: 0x%x\n", vpfe_reg_read(ccdc, VPFE_BLKCMP)); > + vpfe_dbg(3, vpfe, "COLPTN: 0x%x\n", vpfe_reg_read(ccdc, VPFE_COLPTN)); > + vpfe_dbg(3, vpfe, "SDOFST: 0x%x\n", vpfe_reg_read(ccdc, VPFE_SDOFST)); > + vpfe_dbg(3, vpfe, "SYN_MODE: 0x%x\n", > + vpfe_reg_read(ccdc, VPFE_SYNMODE)); > + vpfe_dbg(3, vpfe, "HSIZE_OFF: 0x%x\n", > + vpfe_reg_read(ccdc, VPFE_HSIZE_OFF)); > + vpfe_dbg(3, vpfe, "HORZ_INFO: 0x%x\n", > + vpfe_reg_read(ccdc, VPFE_HORZ_INFO)); > + vpfe_dbg(3, vpfe, "VERT_START: 0x%x\n", > + vpfe_reg_read(ccdc, VPFE_VERT_START)); > + vpfe_dbg(3, vpfe, "VERT_LINES: 0x%x\n", > + vpfe_reg_read(ccdc, VPFE_VERT_LINES)); > +} > + > +static int > +vpfe_ccdc_validate_param(struct vpfe_ccdc *ccdc, > + struct vpfe_ccdc_config_params_raw *ccdcparam) > +{ > + struct vpfe_device *vpfe = to_vpfe(ccdc); > + u8 max_gamma, max_data; > + > + if (!ccdcparam->alaw.enable) > + return 0; > + > + max_gamma = ccdc_gamma_width_max_bit(ccdcparam->alaw.gamma_wd); > + max_data = ccdc_data_size_max_bit(ccdcparam->data_sz); > + > + if (ccdcparam->alaw.gamma_wd > VPFE_CCDC_GAMMA_BITS_09_0 || > + ccdcparam->alaw.gamma_wd < VPFE_CCDC_GAMMA_BITS_15_6 || > + max_gamma > max_data) { > + vpfe_dbg(1, vpfe, "Invalid data line select\n"); > + return -EINVAL; > + } > + > + return 0; > +} > + > +static void > +vpfe_ccdc_update_raw_params(struct vpfe_ccdc *ccdc, > + struct vpfe_ccdc_config_params_raw *raw_params) > +{ > + struct vpfe_ccdc_config_params_raw *config_params = > + &ccdc->ccdc_cfg.bayer.config_params; > + > + config_params = raw_params; > +} > + > +/* > + * vpfe_ccdc_restore_defaults() > + * This function will write defaults to all CCDC registers > + */ > +static void vpfe_ccdc_restore_defaults(struct vpfe_ccdc *ccdc) > +{ > + int i; > + > + /* Disable CCDC */ > + vpfe_pcr_enable(ccdc, 0); > + > + /* set all registers to default value */ > + for (i = 4; i <= 0x94; i += 4) > + vpfe_reg_write(ccdc, 0, i); > + > + vpfe_reg_write(ccdc, VPFE_NO_CULLING, VPFE_CULLING); > + vpfe_reg_write(ccdc, VPFE_CCDC_GAMMA_BITS_11_2, VPFE_ALAW); > +} > + > +static int vpfe_ccdc_close(struct vpfe_ccdc *ccdc, struct device *dev) > +{ > + int dma_cntl, i, pcr; > + > + /* If the CCDC module is still busy wait for it to be done */ > + for (i = 0; i < 10; i++) { > + usleep_range(5000, 6000); > + pcr = vpfe_reg_read(ccdc, VPFE_PCR); > + if (!pcr) > + break; > + > + /* make sure it it is disabled */ > + vpfe_pcr_enable(ccdc, 0); > + } > + > + /* Disable CCDC by resetting all register to default POR values */ > + vpfe_ccdc_restore_defaults(ccdc); > + > + /* if DMA_CNTL overflow bit is set. Clear it > + * It appears to take a while for this to become quiescent ~20ms > + */ > + for (i = 0; i < 10; i++) { > + dma_cntl = vpfe_reg_read(ccdc, VPFE_DMA_CNTL); > + if (!(dma_cntl & VPFE_DMA_CNTL_OVERFLOW)) > + break; > + > + /* Clear the overflow bit */ > + vpfe_reg_write(ccdc, dma_cntl, VPFE_DMA_CNTL); > + usleep_range(5000, 6000); > + } > + > + /* Disabled the module at the CONFIG level */ > + vpfe_config_enable(ccdc, 0); > + > + pm_runtime_put_sync(dev); > + > + return 0; > +} > + > +static int vpfe_ccdc_set_params(struct vpfe_ccdc *ccdc, void __user *params) > +{ > + struct vpfe_device *vpfe = container_of(ccdc, struct vpfe_device, ccdc); > + struct vpfe_ccdc_config_params_raw raw_params; > + int x; > + > + if (ccdc->ccdc_cfg.if_type != VPFE_RAW_BAYER) > + return -EINVAL; > + > + x = copy_from_user(&raw_params, params, sizeof(raw_params)); > + if (x) { > + vpfe_dbg(1, vpfe, > + "vpfe_ccdc_set_params: error in copying ccdc params, %d\n", > + x); > + return -EFAULT; > + } > + > + if (!vpfe_ccdc_validate_param(ccdc, &raw_params)) { > + vpfe_ccdc_update_raw_params(ccdc, &raw_params); > + return 0; > + } > + > + return -EINVAL; > +} > + > +/* > + * vpfe_ccdc_config_ycbcr() > + * This function will configure CCDC for YCbCr video capture > + */ > +static void vpfe_ccdc_config_ycbcr(struct vpfe_ccdc *ccdc) > +{ > + struct vpfe_device *vpfe = container_of(ccdc, struct vpfe_device, ccdc); > + struct ccdc_params_ycbcr *params = &ccdc->ccdc_cfg.ycbcr; > + u32 syn_mode; > + > + vpfe_dbg(3, vpfe, "vpfe_ccdc_config_ycbcr:\n"); > + /* > + * first restore the CCDC registers to default values > + * This is important since we assume default values to be set in > + * a lot of registers that we didn't touch > + */ > + vpfe_ccdc_restore_defaults(ccdc); > + > + /* > + * configure pixel format, frame format, configure video frame > + * format, enable output to SDRAM, enable internal timing generator > + * and 8bit pack mode > + */ > + syn_mode = (((params->pix_fmt & VPFE_SYN_MODE_INPMOD_MASK) << > + VPFE_SYN_MODE_INPMOD_SHIFT) | > + ((params->frm_fmt & VPFE_SYN_FLDMODE_MASK) << > + VPFE_SYN_FLDMODE_SHIFT) | VPFE_VDHDEN_ENABLE | > + VPFE_WEN_ENABLE | VPFE_DATA_PACK_ENABLE); > + > + /* setup BT.656 sync mode */ > + if (params->bt656_enable) { > + vpfe_reg_write(ccdc, VPFE_REC656IF_BT656_EN, VPFE_REC656IF); > + > + /* > + * configure the FID, VD, HD pin polarity, > + * fld,hd pol positive, vd negative, 8-bit data > + */ > + syn_mode |= VPFE_SYN_MODE_VD_POL_NEGATIVE; > + if (ccdc->ccdc_cfg.if_type == VPFE_BT656_10BIT) > + syn_mode |= VPFE_SYN_MODE_10BITS; > + else > + syn_mode |= VPFE_SYN_MODE_8BITS; > + } else { > + /* y/c external sync mode */ > + syn_mode |= (((params->fid_pol & VPFE_FID_POL_MASK) << > + VPFE_FID_POL_SHIFT) | > + ((params->hd_pol & VPFE_HD_POL_MASK) << > + VPFE_HD_POL_SHIFT) | > + ((params->vd_pol & VPFE_VD_POL_MASK) << > + VPFE_VD_POL_SHIFT)); > + } > + vpfe_reg_write(ccdc, syn_mode, VPFE_SYNMODE); > + > + /* configure video window */ > + vpfe_ccdc_setwin(ccdc, ¶ms->win, > + params->frm_fmt, params->bytesperpixel); > + > + /* > + * configure the order of y cb cr in SDRAM, and disable latch > + * internal register on vsync > + */ > + if (ccdc->ccdc_cfg.if_type == VPFE_BT656_10BIT) > + vpfe_reg_write(ccdc, > + (params->pix_order << VPFE_CCDCFG_Y8POS_SHIFT) | > + VPFE_LATCH_ON_VSYNC_DISABLE | > + VPFE_CCDCFG_BW656_10BIT, VPFE_CCDCFG); > + else > + vpfe_reg_write(ccdc, > + (params->pix_order << VPFE_CCDCFG_Y8POS_SHIFT) | > + VPFE_LATCH_ON_VSYNC_DISABLE, VPFE_CCDCFG); > + > + /* > + * configure the horizontal line offset. This should be a > + * on 32 byte boundary. So clear LSB 5 bits > + */ > + vpfe_reg_write(ccdc, params->bytesperline, VPFE_HSIZE_OFF); > + > + /* configure the memory line offset */ > + if (params->buf_type == CCDC_BUFTYPE_FLD_INTERLEAVED) > + /* two fields are interleaved in memory */ > + vpfe_reg_write(ccdc, VPFE_SDOFST_FIELD_INTERLEAVED, > + VPFE_SDOFST); > +} > + > +static void > +vpfe_ccdc_config_black_clamp(struct vpfe_ccdc *ccdc, > + struct vpfe_ccdc_black_clamp *bclamp) > +{ > + u32 val; > + > + if (!bclamp->enable) { > + /* configure DCSub */ > + val = (bclamp->dc_sub) & VPFE_BLK_DC_SUB_MASK; > + vpfe_reg_write(ccdc, val, VPFE_DCSUB); > + vpfe_reg_write(ccdc, VPFE_CLAMP_DEFAULT_VAL, VPFE_CLAMP); > + return; > + } > + /* > + * Configure gain, Start pixel, No of line to be avg, > + * No of pixel/line to be avg, & Enable the Black clamping > + */ > + val = ((bclamp->sgain & VPFE_BLK_SGAIN_MASK) | > + ((bclamp->start_pixel & VPFE_BLK_ST_PXL_MASK) << > + VPFE_BLK_ST_PXL_SHIFT) | > + ((bclamp->sample_ln & VPFE_BLK_SAMPLE_LINE_MASK) << > + VPFE_BLK_SAMPLE_LINE_SHIFT) | > + ((bclamp->sample_pixel & VPFE_BLK_SAMPLE_LN_MASK) << > + VPFE_BLK_SAMPLE_LN_SHIFT) | VPFE_BLK_CLAMP_ENABLE); > + vpfe_reg_write(ccdc, val, VPFE_CLAMP); > + /* If Black clamping is enable then make dcsub 0 */ > + vpfe_reg_write(ccdc, VPFE_DCSUB_DEFAULT_VAL, VPFE_DCSUB); > +} > + > +static void > +vpfe_ccdc_config_black_compense(struct vpfe_ccdc *ccdc, > + struct vpfe_ccdc_black_compensation *bcomp) > +{ > + u32 val; > + > + val = ((bcomp->b & VPFE_BLK_COMP_MASK) | > + ((bcomp->gb & VPFE_BLK_COMP_MASK) << > + VPFE_BLK_COMP_GB_COMP_SHIFT) | > + ((bcomp->gr & VPFE_BLK_COMP_MASK) << > + VPFE_BLK_COMP_GR_COMP_SHIFT) | > + ((bcomp->r & VPFE_BLK_COMP_MASK) << > + VPFE_BLK_COMP_R_COMP_SHIFT)); > + vpfe_reg_write(ccdc, val, VPFE_BLKCMP); > +} > + > +/* > + * vpfe_ccdc_config_raw() > + * This function will configure CCDC for Raw capture mode > + */ > +static void vpfe_ccdc_config_raw(struct vpfe_ccdc *ccdc) > +{ > + struct vpfe_device *vpfe = container_of(ccdc, struct vpfe_device, ccdc); > + struct vpfe_ccdc_config_params_raw *config_params = > + &ccdc->ccdc_cfg.bayer.config_params; > + struct ccdc_params_raw *params = &ccdc->ccdc_cfg.bayer; > + unsigned int syn_mode; > + unsigned int val; > + > + vpfe_dbg(3, vpfe, "vpfe_ccdc_config_raw:\n"); > + > + /* Reset CCDC */ > + vpfe_ccdc_restore_defaults(ccdc); > + > + /* Disable latching function registers on VSYNC */ > + vpfe_reg_write(ccdc, VPFE_LATCH_ON_VSYNC_DISABLE, VPFE_CCDCFG); > + > + /* > + * Configure the vertical sync polarity(SYN_MODE.VDPOL), > + * horizontal sync polarity (SYN_MODE.HDPOL), frame id polarity > + * (SYN_MODE.FLDPOL), frame format(progressive or interlace), > + * data size(SYNMODE.DATSIZ), &pixel format (Input mode), output > + * SDRAM, enable internal timing generator > + */ > + syn_mode = (((params->vd_pol & VPFE_VD_POL_MASK) << VPFE_VD_POL_SHIFT) | > + ((params->hd_pol & VPFE_HD_POL_MASK) << VPFE_HD_POL_SHIFT) | > + ((params->fid_pol & VPFE_FID_POL_MASK) << > + VPFE_FID_POL_SHIFT) | ((params->frm_fmt & > + VPFE_FRM_FMT_MASK) << VPFE_FRM_FMT_SHIFT) | > + ((config_params->data_sz & VPFE_DATA_SZ_MASK) << > + VPFE_DATA_SZ_SHIFT) | ((params->pix_fmt & > + VPFE_PIX_FMT_MASK) << VPFE_PIX_FMT_SHIFT) | > + VPFE_WEN_ENABLE | VPFE_VDHDEN_ENABLE); > + > + /* Enable and configure aLaw register if needed */ > + if (config_params->alaw.enable) { > + val = ((config_params->alaw.gamma_wd & > + VPFE_ALAW_GAMMA_WD_MASK) | VPFE_ALAW_ENABLE); > + vpfe_reg_write(ccdc, val, VPFE_ALAW); > + vpfe_dbg(3, vpfe, "\nWriting 0x%x to ALAW...\n", val); > + } > + > + /* Configure video window */ > + vpfe_ccdc_setwin(ccdc, ¶ms->win, params->frm_fmt, > + params->bytesperpixel); > + > + /* Configure Black Clamp */ > + vpfe_ccdc_config_black_clamp(ccdc, &config_params->blk_clamp); > + > + /* Configure Black level compensation */ > + vpfe_ccdc_config_black_compense(ccdc, &config_params->blk_comp); > + > + /* If data size is 8 bit then pack the data */ > + if ((config_params->data_sz == VPFE_CCDC_DATA_8BITS) || > + config_params->alaw.enable) > + syn_mode |= VPFE_DATA_PACK_ENABLE; > + > + /* > + * Configure Horizontal offset register. If pack 8 is enabled then > + * 1 pixel will take 1 byte > + */ > + vpfe_reg_write(ccdc, params->bytesperline, VPFE_HSIZE_OFF); > + > + vpfe_dbg(3, vpfe, "Writing %d (%x) to HSIZE_OFF\n", > + params->bytesperline, params->bytesperline); > + > + /* Set value for SDOFST */ > + if (params->frm_fmt == CCDC_FRMFMT_INTERLACED) { > + if (params->image_invert_enable) { > + /* For interlace inverse mode */ > + vpfe_reg_write(ccdc, VPFE_INTERLACED_IMAGE_INVERT, > + VPFE_SDOFST); > + } else { > + /* For interlace non inverse mode */ > + vpfe_reg_write(ccdc, VPFE_INTERLACED_NO_IMAGE_INVERT, > + VPFE_SDOFST); > + } > + } else if (params->frm_fmt == CCDC_FRMFMT_PROGRESSIVE) { > + vpfe_reg_write(ccdc, VPFE_PROGRESSIVE_NO_IMAGE_INVERT, > + VPFE_SDOFST); > + } > + > + vpfe_reg_write(ccdc, syn_mode, VPFE_SYNMODE); > + > + vpfe_reg_dump(ccdc); > +} > + > +static inline int > +vpfe_ccdc_set_buftype(struct vpfe_ccdc *ccdc, > + enum ccdc_buftype buf_type) > +{ > + if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) > + ccdc->ccdc_cfg.bayer.buf_type = buf_type; > + else > + ccdc->ccdc_cfg.ycbcr.buf_type = buf_type; > + > + return 0; > +} > + > +static inline enum ccdc_buftype vpfe_ccdc_get_buftype(struct vpfe_ccdc *ccdc) > +{ > + if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) > + return ccdc->ccdc_cfg.bayer.buf_type; > + > + return ccdc->ccdc_cfg.ycbcr.buf_type; > +} > + > +static int vpfe_ccdc_set_pixel_format(struct vpfe_ccdc *ccdc, u32 pixfmt) > +{ > + struct vpfe_device *vpfe = container_of(ccdc, struct vpfe_device, ccdc); > + > + vpfe_dbg(1, vpfe, "vpfe_ccdc_set_pixel_format: if_type: %d, pixfmt:%s\n", > + ccdc->ccdc_cfg.if_type, print_fourcc(pixfmt)); > + > + if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) { > + ccdc->ccdc_cfg.bayer.pix_fmt = CCDC_PIXFMT_RAW; > + /* > + * Need to clear it in case it was left on > + * after the last capture. > + */ > + ccdc->ccdc_cfg.bayer.config_params.alaw.enable = 0; > + > + switch (pixfmt) { > + case V4L2_PIX_FMT_SBGGR8: > + ccdc->ccdc_cfg.bayer.config_params.alaw.enable = 1; > + break; > + > + case V4L2_PIX_FMT_YUYV: > + case V4L2_PIX_FMT_UYVY: > + case V4L2_PIX_FMT_YUV420: > + case V4L2_PIX_FMT_NV12: > + case V4L2_PIX_FMT_RGB565X: > + break; > + > + case V4L2_PIX_FMT_SBGGR16: > + default: > + return -EINVAL; > + } > + } else { > + switch (pixfmt) { > + case V4L2_PIX_FMT_YUYV: > + ccdc->ccdc_cfg.ycbcr.pix_order = CCDC_PIXORDER_YCBYCR; > + break; > + > + case V4L2_PIX_FMT_UYVY: > + ccdc->ccdc_cfg.ycbcr.pix_order = CCDC_PIXORDER_CBYCRY; > + break; > + > + default: > + return -EINVAL; > + } > + } > + > + return 0; > +} > + > +static u32 vpfe_ccdc_get_pixel_format(struct vpfe_ccdc *ccdc) > +{ > + u32 pixfmt; > + > + if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) { > + pixfmt = V4L2_PIX_FMT_YUYV; > + } else { > + if (ccdc->ccdc_cfg.ycbcr.pix_order == CCDC_PIXORDER_YCBYCR) > + pixfmt = V4L2_PIX_FMT_YUYV; > + else > + pixfmt = V4L2_PIX_FMT_UYVY; > + } > + > + return pixfmt; > +} > + > +static int > +vpfe_ccdc_set_image_window(struct vpfe_ccdc *ccdc, > + struct v4l2_rect *win, unsigned int bpp) > +{ > + if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) { > + ccdc->ccdc_cfg.bayer.win = *win; > + ccdc->ccdc_cfg.bayer.bytesperpixel = bpp; > + ccdc->ccdc_cfg.bayer.bytesperline = ALIGN(win->width * bpp, 32); > + } else { > + ccdc->ccdc_cfg.ycbcr.win = *win; > + ccdc->ccdc_cfg.ycbcr.bytesperpixel = bpp; > + ccdc->ccdc_cfg.ycbcr.bytesperline = ALIGN(win->width * bpp, 32); > + } > + > + return 0; > +} > + > +static inline void > +vpfe_ccdc_get_image_window(struct vpfe_ccdc *ccdc, > + struct v4l2_rect *win) > +{ > + if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) > + *win = ccdc->ccdc_cfg.bayer.win; > + else > + *win = ccdc->ccdc_cfg.ycbcr.win; > +} > + > +static inline unsigned int vpfe_ccdc_get_line_length(struct vpfe_ccdc *ccdc) > +{ > + if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) > + return ccdc->ccdc_cfg.bayer.bytesperline; > + > + return ccdc->ccdc_cfg.ycbcr.bytesperline; > +} > + > +static inline int > +vpfe_ccdc_set_frame_format(struct vpfe_ccdc *ccdc, > + enum ccdc_frmfmt frm_fmt) > +{ > + if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) > + ccdc->ccdc_cfg.bayer.frm_fmt = frm_fmt; > + else > + ccdc->ccdc_cfg.ycbcr.frm_fmt = frm_fmt; > + > + return 0; > +} > + > +static inline enum ccdc_frmfmt > +vpfe_ccdc_get_frame_format(struct vpfe_ccdc *ccdc) > +{ > + if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) > + return ccdc->ccdc_cfg.bayer.frm_fmt; > + > + return ccdc->ccdc_cfg.ycbcr.frm_fmt; > +} > + > +static inline int vpfe_ccdc_getfid(struct vpfe_ccdc *ccdc) > +{ > + return (vpfe_reg_read(ccdc, VPFE_SYNMODE) >> 15) & 1; > +} > + > +static inline void vpfe_set_sdr_addr(struct vpfe_ccdc *ccdc, unsigned long addr) > +{ > + vpfe_reg_write(ccdc, addr & 0xffffffe0, VPFE_SDR_ADDR); > +} > + > +static int vpfe_ccdc_set_hw_if_params(struct vpfe_ccdc *ccdc, > + struct vpfe_hw_if_param *params) > +{ > + struct vpfe_device *vpfe = container_of(ccdc, struct vpfe_device, ccdc); > + > + ccdc->ccdc_cfg.if_type = params->if_type; > + > + switch (params->if_type) { > + case VPFE_BT656: > + case VPFE_YCBCR_SYNC_16: > + case VPFE_YCBCR_SYNC_8: > + case VPFE_BT656_10BIT: > + ccdc->ccdc_cfg.ycbcr.vd_pol = params->vdpol; > + ccdc->ccdc_cfg.ycbcr.hd_pol = params->hdpol; > + break; > + > + case VPFE_RAW_BAYER: > + ccdc->ccdc_cfg.bayer.vd_pol = params->vdpol; > + ccdc->ccdc_cfg.bayer.hd_pol = params->hdpol; > + if (params->bus_width == 10) > + ccdc->ccdc_cfg.bayer.config_params.data_sz = > + VPFE_CCDC_DATA_10BITS; > + else > + ccdc->ccdc_cfg.bayer.config_params.data_sz = > + VPFE_CCDC_DATA_8BITS; > + vpfe_dbg(1, vpfe, "params.bus_width: %d\n", > + params->bus_width); > + vpfe_dbg(1, vpfe, "config_params.data_sz: %d\n", > + ccdc->ccdc_cfg.bayer.config_params.data_sz); > + break; > + > + default: > + return -EINVAL; > + } > + > + return 0; > +} > + > +static void vpfe_clear_intr(struct vpfe_ccdc *ccdc, int vdint) > +{ > + unsigned int vpfe_int_status; > + > + vpfe_int_status = vpfe_reg_read(ccdc, VPFE_IRQ_STS); > + > + switch (vdint) { > + /* VD0 interrupt */ > + case VPFE_VDINT0: > + vpfe_int_status &= ~VPFE_VDINT0; > + vpfe_int_status |= VPFE_VDINT0; > + break; > + > + /* VD1 interrupt */ > + case VPFE_VDINT1: > + vpfe_int_status &= ~VPFE_VDINT1; > + vpfe_int_status |= VPFE_VDINT1; > + break; > + > + /* VD2 interrupt */ > + case VPFE_VDINT2: > + vpfe_int_status &= ~VPFE_VDINT2; > + vpfe_int_status |= VPFE_VDINT2; > + break; > + > + /* Clear all interrupts */ > + default: > + vpfe_int_status &= ~(VPFE_VDINT0 | > + VPFE_VDINT1 | > + VPFE_VDINT2); > + vpfe_int_status |= (VPFE_VDINT0 | > + VPFE_VDINT1 | > + VPFE_VDINT2); > + break; > + } > + /* Clear specific VDINT from the status register */ > + vpfe_reg_write(ccdc, vpfe_int_status, VPFE_IRQ_STS); > + > + vpfe_int_status = vpfe_reg_read(ccdc, VPFE_IRQ_STS); > + > + /* Acknowledge that we are done with all interrupts */ > + vpfe_reg_write(ccdc, 1, VPFE_IRQ_EOI); > +} > + > +static void vpfe_ccdc_config_defaults(struct vpfe_ccdc *ccdc) > +{ > + ccdc->ccdc_cfg.if_type = VPFE_RAW_BAYER; > + > + ccdc->ccdc_cfg.ycbcr.pix_fmt = CCDC_PIXFMT_YCBCR_8BIT; > + ccdc->ccdc_cfg.ycbcr.frm_fmt = CCDC_FRMFMT_INTERLACED; > + ccdc->ccdc_cfg.ycbcr.fid_pol = VPFE_PINPOL_POSITIVE; > + ccdc->ccdc_cfg.ycbcr.vd_pol = VPFE_PINPOL_POSITIVE; > + ccdc->ccdc_cfg.ycbcr.hd_pol = VPFE_PINPOL_POSITIVE; > + ccdc->ccdc_cfg.ycbcr.pix_order = CCDC_PIXORDER_CBYCRY; > + ccdc->ccdc_cfg.ycbcr.buf_type = CCDC_BUFTYPE_FLD_INTERLEAVED; > + > + ccdc->ccdc_cfg.ycbcr.win.left = 0; > + ccdc->ccdc_cfg.ycbcr.win.top = 0; > + ccdc->ccdc_cfg.ycbcr.win.width = 720; > + ccdc->ccdc_cfg.ycbcr.win.height = 576; > + ccdc->ccdc_cfg.ycbcr.bt656_enable = 1; > + > + ccdc->ccdc_cfg.bayer.pix_fmt = CCDC_PIXFMT_RAW; > + ccdc->ccdc_cfg.bayer.frm_fmt = CCDC_FRMFMT_PROGRESSIVE; > + ccdc->ccdc_cfg.bayer.fid_pol = VPFE_PINPOL_POSITIVE; > + ccdc->ccdc_cfg.bayer.vd_pol = VPFE_PINPOL_POSITIVE; > + ccdc->ccdc_cfg.bayer.hd_pol = VPFE_PINPOL_POSITIVE; > + > + ccdc->ccdc_cfg.bayer.win.left = 0; > + ccdc->ccdc_cfg.bayer.win.top = 0; > + ccdc->ccdc_cfg.bayer.win.width = 800; > + ccdc->ccdc_cfg.bayer.win.height = 600; > + ccdc->ccdc_cfg.bayer.config_params.data_sz = VPFE_CCDC_DATA_8BITS; > + ccdc->ccdc_cfg.bayer.config_params.alaw.gamma_wd = > + VPFE_CCDC_GAMMA_BITS_09_0; > +} > + > +/* > + * vpfe_get_ccdc_image_format - Get image parameters based on CCDC settings > + */ > +static int vpfe_get_ccdc_image_format(struct vpfe_device *vpfe, > + struct v4l2_format *f) > +{ > + struct v4l2_rect image_win; > + enum ccdc_buftype buf_type; > + enum ccdc_frmfmt frm_fmt; > + > + memset(f, 0, sizeof(*f)); > + f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; > + vpfe_ccdc_get_image_window(&vpfe->ccdc, &image_win); > + f->fmt.pix.width = image_win.width; > + f->fmt.pix.height = image_win.height; > + f->fmt.pix.bytesperline = vpfe_ccdc_get_line_length(&vpfe->ccdc); > + f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * > + f->fmt.pix.height; > + buf_type = vpfe_ccdc_get_buftype(&vpfe->ccdc); > + f->fmt.pix.pixelformat = vpfe_ccdc_get_pixel_format(&vpfe->ccdc); > + frm_fmt = vpfe_ccdc_get_frame_format(&vpfe->ccdc); > + > + if (frm_fmt == CCDC_FRMFMT_PROGRESSIVE) { > + f->fmt.pix.field = V4L2_FIELD_NONE; > + } else if (frm_fmt == CCDC_FRMFMT_INTERLACED) { > + if (buf_type == CCDC_BUFTYPE_FLD_INTERLEAVED) { > + f->fmt.pix.field = V4L2_FIELD_INTERLACED; > + } else if (buf_type == CCDC_BUFTYPE_FLD_SEPARATED) { > + f->fmt.pix.field = V4L2_FIELD_SEQ_TB; > + } else { > + vpfe_err(vpfe, "Invalid buf_type\n"); > + return -EINVAL; > + } > + } else { > + vpfe_err(vpfe, "Invalid frm_fmt\n"); > + return -EINVAL; > + } > + return 0; > +} > + > +static int vpfe_config_ccdc_image_format(struct vpfe_device *vpfe) > +{ > + enum ccdc_frmfmt frm_fmt = CCDC_FRMFMT_INTERLACED; > + int ret; > + > + vpfe_dbg(2, vpfe, "vpfe_config_ccdc_image_format\n"); > + > + vpfe_dbg(1, vpfe, "pixelformat: %s\n", > + print_fourcc(vpfe->fmt.fmt.pix.pixelformat)); > + > + if (vpfe_ccdc_set_pixel_format(&vpfe->ccdc, > + vpfe->fmt.fmt.pix.pixelformat) < 0) { > + vpfe_err(vpfe, "couldn't set pix format in ccdc\n"); > + return -EINVAL; > + } > + > + /* configure the image window */ > + vpfe_ccdc_set_image_window(&vpfe->ccdc, &vpfe->crop, vpfe->bpp); > + > + switch (vpfe->fmt.fmt.pix.field) { > + case V4L2_FIELD_INTERLACED: > + /* do nothing, since it is default */ > + ret = vpfe_ccdc_set_buftype( > + &vpfe->ccdc, > + CCDC_BUFTYPE_FLD_INTERLEAVED); > + break; > + > + case V4L2_FIELD_NONE: > + frm_fmt = CCDC_FRMFMT_PROGRESSIVE; > + /* buffer type only applicable for interlaced scan */ > + break; > + > + case V4L2_FIELD_SEQ_TB: > + ret = vpfe_ccdc_set_buftype( > + &vpfe->ccdc, > + CCDC_BUFTYPE_FLD_SEPARATED); > + break; > + > + default: > + return -EINVAL; > + } > + > + if (ret) > + return ret; > + > + return vpfe_ccdc_set_frame_format(&vpfe->ccdc, frm_fmt); > +} > + > +/* > + * vpfe_config_image_format() > + * For a given standard, this functions sets up the default > + * pix format & crop values in the vpfe device and ccdc. It first > + * starts with defaults based values from the standard table. > + * It then checks if sub device support g_mbus_fmt and then override the > + * values based on that.Sets crop values to match with scan resolution > + * starting at 0,0. It calls vpfe_config_ccdc_image_format() set the > + * values in ccdc > + */ > +static int vpfe_config_image_format(struct vpfe_device *vpfe, > + v4l2_std_id std_id) > +{ > + struct v4l2_pix_format *pix = &vpfe->fmt.fmt.pix; > + int i, ret; > + > + for (i = 0; i < ARRAY_SIZE(vpfe_standards); i++) { > + if (vpfe_standards[i].std_id & std_id) { > + vpfe->std_info.active_pixels = > + vpfe_standards[i].width; > + vpfe->std_info.active_lines = > + vpfe_standards[i].height; > + vpfe->std_info.frame_format = > + vpfe_standards[i].frame_format; > + vpfe->std_index = i; > + > + break; > + } > + } > + > + if (i == ARRAY_SIZE(vpfe_standards)) { > + vpfe_err(vpfe, "standard not supported\n"); > + return -EINVAL; > + } > + > + vpfe->crop.top = vpfe->crop.left = 0; > + vpfe->crop.width = vpfe->std_info.active_pixels; > + vpfe->crop.height = vpfe->std_info.active_lines; > + pix->width = vpfe->crop.width; > + pix->height = vpfe->crop.height; > + pix->pixelformat = V4L2_PIX_FMT_YUYV; > + > + /* first field and frame format based on standard frame format */ > + if (vpfe->std_info.frame_format) > + pix->field = V4L2_FIELD_INTERLACED; > + else > + pix->field = V4L2_FIELD_NONE; > + > + ret = __vpfe_get_format(vpfe, &vpfe->fmt, &vpfe->bpp); > + if (ret) > + return ret; > + > + /* Update the crop window based on found values */ > + vpfe->crop.width = pix->width; > + vpfe->crop.height = pix->height; > + > + return vpfe_config_ccdc_image_format(vpfe); > +} > + > +static int vpfe_initialize_device(struct vpfe_device *vpfe) > +{ > + struct vpfe_subdev_info *sdinfo; > + int ret; > + > + sdinfo = &vpfe->cfg->sub_devs[0]; > + sdinfo->sd = vpfe->sd[0]; > + vpfe->current_input = 0; > + vpfe->std_index = 0; > + /* Configure the default format information */ > + ret = vpfe_config_image_format(vpfe, > + vpfe_standards[vpfe->std_index].std_id); > + if (ret) > + return ret; > + > + pm_runtime_get_sync(vpfe->pdev); > + > + vpfe_config_enable(&vpfe->ccdc, 1); > + > + vpfe_ccdc_restore_defaults(&vpfe->ccdc); > + > + /* Clear all VPFE interrupts */ > + vpfe_clear_intr(&vpfe->ccdc, -1); > + > + return ret; > +} > + > +/* > + * vpfe_release : This function is based on the vb2_fop_release > + * helper function. > + * It has been augmented to handle module power management, > + * by disabling/enabling h/w module fcntl clock when necessary. > + */ > +static int vpfe_release(struct file *file) > +{ > + struct vpfe_device *vpfe = video_drvdata(file); > + int ret; > + > + vpfe_dbg(2, vpfe, "vpfe_release\n"); > + > + ret = _vb2_fop_release(file, NULL); > + > + if (v4l2_fh_is_singular_file(file)) { > + mutex_lock(&vpfe->lock); > + vpfe_ccdc_close(&vpfe->ccdc, vpfe->pdev); > + v4l2_fh_release(file); > + mutex_unlock(&vpfe->lock); > + } > + > + return ret; > +} > + > +/* > + * vpfe_open : This function is based on the v4l2_fh_open helper function. > + * It has been augmented to handle module power management, > + * by disabling/enabling h/w module fcntl clock when necessary. > + */ > + > +static int vpfe_open(struct file *file) > +{ > + struct vpfe_device *vpfe = video_drvdata(file); > + int ret; > + > + ret = v4l2_fh_open(file); > + if (ret) { > + vpfe_err(vpfe, "v4l2_fh_open failed\n"); > + return ret; > + } > + > + if (!v4l2_fh_is_singular_file(file)) > + return 0; > + > + mutex_lock(&vpfe->lock); > + if (vpfe_initialize_device(vpfe)) { > + mutex_unlock(&vpfe->lock); > + v4l2_fh_release(file); > + return -ENODEV; > + } > + mutex_unlock(&vpfe->lock); > + > + return 0; > +} > + > +/** > + * vpfe_schedule_next_buffer: set next buffer address for capture > + * @vpfe : ptr to vpfe device > + * > + * This function will get next buffer from the dma queue and > + * set the buffer address in the vpfe register for capture. > + * the buffer is marked active > + * > + * Assumes caller is holding vpfe->dma_queue_lock already > + */ > +static inline void vpfe_schedule_next_buffer(struct vpfe_device *vpfe) > +{ > + vpfe->next_frm = list_entry(vpfe->dma_queue.next, > + struct vpfe_cap_buffer, list); > + list_del(&vpfe->next_frm->list); > + > + vpfe_set_sdr_addr(&vpfe->ccdc, > + vb2_dma_contig_plane_dma_addr(&vpfe->next_frm->vb, 0)); > +} > + > +static inline void vpfe_schedule_bottom_field(struct vpfe_device *vpfe) > +{ > + unsigned long addr; > + > + addr = vb2_dma_contig_plane_dma_addr(&vpfe->next_frm->vb, 0) + > + vpfe->field_off; > + > + vpfe_set_sdr_addr(&vpfe->ccdc, addr); > +} > + > +/* > + * vpfe_process_buffer_complete: process a completed buffer > + * @vpfe : ptr to vpfe device > + * > + * This function time stamp the buffer and mark it as DONE. It also > + * wake up any process waiting on the QUEUE and set the next buffer > + * as current > + */ > +static inline void vpfe_process_buffer_complete(struct vpfe_device *vpfe) > +{ > + v4l2_get_timestamp(&vpfe->cur_frm->vb.v4l2_buf.timestamp); > + vpfe->cur_frm->vb.v4l2_buf.field = vpfe->fmt.fmt.pix.field; > + vpfe->cur_frm->vb.v4l2_buf.sequence = vpfe->sequence++; > + vb2_buffer_done(&vpfe->cur_frm->vb, VB2_BUF_STATE_DONE); > + vpfe->cur_frm = vpfe->next_frm; > +} > + > +/* > + * vpfe_isr : ISR handler for vpfe capture (VINT0) > + * @irq: irq number > + * @dev_id: dev_id ptr > + * > + * It changes status of the captured buffer, takes next buffer from the queue > + * and sets its address in VPFE registers > + */ > +static irqreturn_t vpfe_isr(int irq, void *dev) > +{ > + struct vpfe_device *vpfe = (struct vpfe_device *)dev; > + enum v4l2_field field; > + int intr_status; > + int fid; > + > + intr_status = vpfe_reg_read(&vpfe->ccdc, VPFE_IRQ_STS); > + > + if (intr_status & VPFE_VDINT0) { > + field = vpfe->fmt.fmt.pix.field; > + > + if (field == V4L2_FIELD_NONE) { > + /* handle progressive frame capture */ > + if (vpfe->cur_frm != vpfe->next_frm) > + vpfe_process_buffer_complete(vpfe); > + goto next_intr; > + } > + > + /* interlaced or TB capture check which field > + we are in hardware */ > + fid = vpfe_ccdc_getfid(&vpfe->ccdc); > + > + /* switch the software maintained field id */ > + vpfe->field ^= 1; > + if (fid == vpfe->field) { > + /* we are in-sync here,continue */ > + if (fid == 0) { > + /* > + * One frame is just being captured. If the > + * next frame is available, release the > + * current frame and move on > + */ > + if (vpfe->cur_frm != vpfe->next_frm) > + vpfe_process_buffer_complete(vpfe); > + /* > + * based on whether the two fields are stored > + * interleave or separately in memory, > + * reconfigure the CCDC memory address > + */ > + if (field == V4L2_FIELD_SEQ_TB) > + vpfe_schedule_bottom_field(vpfe); > + > + goto next_intr; > + } > + /* > + * if one field is just being captured configure > + * the next frame get the next frame from the empty > + * queue if no frame is available hold on to the > + * current buffer > + */ > + spin_lock(&vpfe->dma_queue_lock); > + if (!list_empty(&vpfe->dma_queue) && > + vpfe->cur_frm == vpfe->next_frm) > + vpfe_schedule_next_buffer(vpfe); > + spin_unlock(&vpfe->dma_queue_lock); > + } else if (fid == 0) { > + /* > + * out of sync. Recover from any hardware out-of-sync. > + * May loose one frame > + */ > + vpfe->field = fid; > + } > + } > + > +next_intr: > + if (intr_status & VPFE_VDINT1) { > + spin_lock(&vpfe->dma_queue_lock); > + if (vpfe->fmt.fmt.pix.field == V4L2_FIELD_NONE && > + !list_empty(&vpfe->dma_queue) && > + vpfe->cur_frm == vpfe->next_frm) > + vpfe_schedule_next_buffer(vpfe); > + spin_unlock(&vpfe->dma_queue_lock); > + } > + > + vpfe_clear_intr(&vpfe->ccdc, intr_status); > + > + return IRQ_HANDLED; > +} > + > +static inline void vpfe_detach_irq(struct vpfe_device *vpfe) > +{ > + unsigned int intr = VPFE_VDINT0; > + enum ccdc_frmfmt frame_format; > + > + frame_format = vpfe_ccdc_get_frame_format(&vpfe->ccdc); > + if (frame_format == CCDC_FRMFMT_PROGRESSIVE) > + intr |= VPFE_VDINT1; > + > + vpfe_reg_write(&vpfe->ccdc, intr, VPFE_IRQ_EN_CLR); > +} > + > +static inline void vpfe_attach_irq(struct vpfe_device *vpfe) > +{ > + unsigned int intr = VPFE_VDINT0; > + enum ccdc_frmfmt frame_format; > + > + frame_format = vpfe_ccdc_get_frame_format(&vpfe->ccdc); > + if (frame_format == CCDC_FRMFMT_PROGRESSIVE) > + intr |= VPFE_VDINT1; > + > + vpfe_reg_write(&vpfe->ccdc, intr, VPFE_IRQ_EN_SET); > +} > + > +static int vpfe_querycap(struct file *file, void *priv, > + struct v4l2_capability *cap) > +{ > + struct vpfe_device *vpfe = video_drvdata(file); > + > + vpfe_dbg(2, vpfe, "vpfe_querycap\n"); > + > + strlcpy(cap->driver, VPFE_MODULE_NAME, sizeof(cap->driver)); > + strlcpy(cap->card, "TI AM437x VPFE", sizeof(cap->card)); > + snprintf(cap->bus_info, sizeof(cap->bus_info), > + "platform:%s", vpfe->v4l2_dev.name); > + cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING | > + V4L2_CAP_READWRITE; > + cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; > + > + return 0; > +} > + > +/* get the format set at output pad of the adjacent subdev */ > +static int __vpfe_get_format(struct vpfe_device *vpfe, > + struct v4l2_format *format, unsigned int *bpp) > +{ > + struct v4l2_mbus_framefmt mbus_fmt; > + struct vpfe_subdev_info *sdinfo; > + struct v4l2_subdev_format fmt; > + int ret; > + > + sdinfo = vpfe->current_subdev; > + if (!sdinfo->sd) > + return -EINVAL; > + > + fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; > + fmt.pad = 0; > + > + ret = v4l2_subdev_call(sdinfo->sd, pad, get_fmt, NULL, &fmt); > + if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) > + return ret; > + > + if (!ret) { > + v4l2_fill_pix_format(&format->fmt.pix, &fmt.format); > + mbus_to_pix(vpfe, &fmt.format, &format->fmt.pix, bpp); > + } else { > + ret = v4l2_device_call_until_err(&vpfe->v4l2_dev, > + sdinfo->grp_id, > + video, g_mbus_fmt, > + &mbus_fmt); > + if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) > + return ret; > + v4l2_fill_pix_format(&format->fmt.pix, &mbus_fmt); > + mbus_to_pix(vpfe, &mbus_fmt, &format->fmt.pix, bpp); > + } > + > + format->type = vpfe->fmt.type; > + > + vpfe_dbg(1, vpfe, > + "%s size %dx%d (%s) bytesperline= %d, size= %d, bpp= %d\n", > + __func__, format->fmt.pix.width, format->fmt.pix.height, > + print_fourcc(format->fmt.pix.pixelformat), > + format->fmt.pix.bytesperline, format->fmt.pix.sizeimage, *bpp); > + > + return 0; > +} > + > +/* set the format at output pad of the adjacent subdev */ > +static int __vpfe_set_format(struct vpfe_device *vpfe, > + struct v4l2_format *format, unsigned int *bpp) > +{ > + struct vpfe_subdev_info *sdinfo; > + struct v4l2_subdev_format fmt; > + int ret; > + > + vpfe_dbg(2, vpfe, "__vpfe_set_format\n"); > + > + sdinfo = vpfe->current_subdev; > + if (!sdinfo->sd) > + return -EINVAL; > + > + fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; > + fmt.pad = 0; > + > + ret = pix_to_mbus(vpfe, &format->fmt.pix, &fmt.format); > + if (ret) > + return ret; > + > + ret = v4l2_subdev_call(sdinfo->sd, pad, set_fmt, NULL, &fmt); > + if (ret == -ENOIOCTLCMD) > + return -EINVAL; > + > + format->type = vpfe->fmt.type; > + > + /* convert mbus_format to v4l2_format */ > + v4l2_fill_pix_format(&format->fmt.pix, &fmt.format); > + mbus_to_pix(vpfe, &fmt.format, &format->fmt.pix, bpp); > + vpfe_dbg(1, vpfe, "__vpfe_set_format size %dx%d (%s) bytesperline = %d, sizeimage = %d, bpp = %d\n", > + format->fmt.pix.width, format->fmt.pix.height, > + print_fourcc(format->fmt.pix.pixelformat), > + format->fmt.pix.bytesperline, format->fmt.pix.sizeimage, *bpp); > + > + return 0; > +} > + > +static int vpfe_g_fmt(struct file *file, void *priv, > + struct v4l2_format *fmt) > +{ > + struct vpfe_device *vpfe = video_drvdata(file); > + > + vpfe_dbg(2, vpfe, "vpfe_g_fmt\n"); > + > + *fmt = vpfe->fmt; > + > + return 0; > +} > + > +static int vpfe_enum_fmt(struct file *file, void *priv, > + struct v4l2_fmtdesc *f) > +{ > + struct vpfe_device *vpfe = video_drvdata(file); > + struct vpfe_subdev_info *sdinfo; > + struct vpfe_fmt *fmt = NULL; > + unsigned int k; > + > + vpfe_dbg(2, vpfe, "vpfe_enum_format index:%d\n", > + f->index); > + > + sdinfo = vpfe->current_subdev; > + if (!sdinfo->sd) > + return -EINVAL; > + > + if (f->index > ARRAY_SIZE(formats)) > + return -EINVAL; > + > + for (k = 0; k < ARRAY_SIZE(formats); k++) { > + if (formats[k].index == f->index) { > + fmt = &formats[k]; > + break; > + } > + } > + if (!fmt) > + return -EINVAL; > + > + strncpy(f->description, fmt->name, sizeof(f->description) - 1); > + f->pixelformat = fmt->fourcc; > + f->type = vpfe->fmt.type; > + > + vpfe_dbg(1, vpfe, "vpfe_enum_format: mbus index: %d code: %x pixelformat: %s [%s]\n", > + f->index, fmt->code, print_fourcc(fmt->fourcc), fmt->name); > + > + return 0; > +} > + > +static int vpfe_try_fmt(struct file *file, void *priv, > + struct v4l2_format *fmt) > +{ > + struct vpfe_device *vpfe = video_drvdata(file); > + unsigned int bpp; > + > + vpfe_dbg(2, vpfe, "vpfe_try_fmt\n"); > + > + return __vpfe_get_format(vpfe, fmt, &bpp); > +} > + > +static int vpfe_s_fmt(struct file *file, void *priv, > + struct v4l2_format *fmt) > +{ > + struct vpfe_device *vpfe = video_drvdata(file); > + struct v4l2_format format; > + unsigned int bpp; > + int ret; > + > + vpfe_dbg(2, vpfe, "vpfe_s_fmt\n"); > + > + /* If streaming is started, return error */ > + if (vb2_is_busy(&vpfe->buffer_queue)) { > + vpfe_err(vpfe, "%s device busy\n", __func__); > + return -EBUSY; > + } > + > + ret = vpfe_try_fmt(file, priv, fmt); > + if (ret) > + return ret; > + > + > + if (!cmp_v4l2_format(fmt, &format)) { > + /* Sensor format is different from the requested format > + * so we need to change it > + */ > + ret = __vpfe_set_format(vpfe, fmt, &bpp); > + if (ret) > + return ret; > + } else /* Just make sure all of the fields are consistent */ > + *fmt = format; > + > + /* First detach any IRQ if currently attached */ > + vpfe_detach_irq(vpfe); > + vpfe->fmt = *fmt; > + vpfe->bpp = bpp; > + > + /* Update the crop window based on found values */ > + vpfe->crop.width = fmt->fmt.pix.width; > + vpfe->crop.height = fmt->fmt.pix.height; > + > + /* set image capture parameters in the ccdc */ > + return vpfe_config_ccdc_image_format(vpfe); > +} > + > +static int vpfe_enum_size(struct file *file, void *priv, > + struct v4l2_frmsizeenum *fsize) > +{ > + struct vpfe_device *vpfe = video_drvdata(file); > + struct v4l2_subdev_frame_size_enum fse; > + struct vpfe_subdev_info *sdinfo; > + struct v4l2_mbus_framefmt mbus; > + struct v4l2_pix_format pix; Zero this pix struct so that there are no random values. Same for fse and mbus. > + struct vpfe_fmt *fmt; > + int ret; > + > + vpfe_dbg(2, vpfe, "vpfe_enum_size\n"); > + > + /* check for valid format */ > + fmt = find_format_by_pix(fsize->pixel_format); > + if (!fmt) { > + vpfe_dbg(3, vpfe, "Invalid pixel code: %x, default used instead\n", > + fsize->pixel_format); > + return -EINVAL; > + } > + > + memset(fsize->reserved, 0x00, sizeof(fsize->reserved)); > + > + sdinfo = vpfe->current_subdev; > + if (!sdinfo->sd) > + return -EINVAL; > + > + /* Construct pix from parameter and use default for the rest */ > + pix.pixelformat = fsize->pixel_format; > + pix.width = 640; > + pix.height = 480; > + pix.colorspace = V4L2_COLORSPACE_SRGB; > + pix.field = V4L2_FIELD_NONE; > + ret = pix_to_mbus(vpfe, &pix, &mbus); > + if (ret) > + return ret; > + > + fse.index = fsize->index; > + fse.pad = 0; > + fse.code = mbus.code; > + ret = v4l2_subdev_call(sdinfo->sd, pad, enum_frame_size, NULL, &fse); > + if (ret) > + return -EINVAL; > + > + vpfe_dbg(1, vpfe, "vpfe_enum_size: index: %d code: %x W:[%d,%d] H:[%d,%d]\n", > + fse.index, fse.code, fse.min_width, fse.max_width, > + fse.min_height, fse.max_height); > + > + fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE; > + fsize->discrete.width = fse.max_width; > + fsize->discrete.height = fse.max_height; > + > + vpfe_dbg(1, vpfe, "vpfe_enum_size: index: %d pixformat: %s size: %dx%d\n", > + fsize->index, print_fourcc(fsize->pixel_format), > + fsize->discrete.width, fsize->discrete.height); > + > + return 0; > +} > + > +/* > + * vpfe_get_subdev_input_index - Get subdev index and subdev input index for a > + * given app input index > + */ > +static int > +vpfe_get_subdev_input_index(struct vpfe_device *vpfe, > + int *subdev_index, > + int *subdev_input_index, > + int app_input_index) > +{ > + struct vpfe_config *cfg = vpfe->cfg; > + struct vpfe_subdev_info *sdinfo; > + int i, j = 0; > + > + for (i = 0; i < ARRAY_SIZE(vpfe->cfg->asd); i++) { > + sdinfo = &cfg->sub_devs[i]; > + if (app_input_index < (j + 1)) { > + *subdev_index = i; > + *subdev_input_index = app_input_index - j; > + return 0; > + } > + j++; > + } > + return -EINVAL; > +} > + > +/* > + * vpfe_get_app_input - Get app input index for a given subdev input index > + * driver stores the input index of the current sub device and translate it > + * when application request the current input > + */ > +static int vpfe_get_app_input_index(struct vpfe_device *vpfe, > + int *app_input_index) > +{ > + struct vpfe_config *cfg = vpfe->cfg; > + struct vpfe_subdev_info *sdinfo; > + int i, j = 0; > + > + for (i = 0; i < ARRAY_SIZE(vpfe->cfg->asd); i++) { > + sdinfo = &cfg->sub_devs[i]; > + if (!strcmp(sdinfo->name, vpfe->current_subdev->name)) { > + if (vpfe->current_input >= 1) > + return -1; > + *app_input_index = j + vpfe->current_input; > + return 0; > + } > + j++; > + } > + return -EINVAL; > +} > + > +static int vpfe_enum_input(struct file *file, void *priv, > + struct v4l2_input *inp) > +{ > + struct vpfe_device *vpfe = video_drvdata(file); > + struct vpfe_subdev_info *sdinfo; > + int subdev, index; > + > + vpfe_dbg(2, vpfe, "vpfe_enum_input\n"); > + > + if (vpfe_get_subdev_input_index(vpfe, > + &subdev, > + &index, > + inp->index) < 0) { > + vpfe_dbg(1, vpfe, > + "input information not found for the subdev\n"); > + return -EINVAL; > + } > + sdinfo = &vpfe->cfg->sub_devs[subdev]; > + *inp = sdinfo->inputs[index]; > + > + return 0; > +} > + > +static int vpfe_g_input(struct file *file, void *priv, unsigned int *index) > +{ > + struct vpfe_device *vpfe = video_drvdata(file); > + > + vpfe_dbg(2, vpfe, "vpfe_g_input\n"); > + > + return vpfe_get_app_input_index(vpfe, index); > +} > + > +/* Assumes caller is holding vpfe_dev->lock */ > +static int vpfe_set_input(struct vpfe_device *vpfe, unsigned int index) > +{ > + int subdev_index = 0, inp_index = 0; > + struct vpfe_subdev_info *sdinfo; > + struct vpfe_route *route; > + u32 input, output; > + int ret; > + > + vpfe_dbg(2, vpfe, "vpfe_set_input: index: %d\n", index); > + > + /* If streaming is started, return error */ > + if (vb2_is_busy(&vpfe->buffer_queue)) { > + vpfe_err(vpfe, "%s device busy\n", __func__); > + return -EBUSY; > + } > + ret = vpfe_get_subdev_input_index(vpfe, > + &subdev_index, > + &inp_index, > + index); > + if (ret < 0) { > + vpfe_err(vpfe, "invalid input index: %d\n", index); > + goto get_out; > + } > + > + sdinfo = &vpfe->cfg->sub_devs[subdev_index]; > + sdinfo->sd = vpfe->sd[subdev_index]; > + route = &sdinfo->routes[inp_index]; > + if (route && sdinfo->can_route) { > + input = route->input; > + output = route->output; > + if (sdinfo->sd) { > + ret = v4l2_subdev_call(sdinfo->sd, video, > + s_routing, input, output, 0); > + if (ret) { > + vpfe_err(vpfe, "s_routing failed\n"); > + ret = -EINVAL; > + goto get_out; > + } > + } > + > + } > + > + vpfe->current_subdev = sdinfo; > + if (sdinfo->sd) > + vpfe->v4l2_dev.ctrl_handler = sdinfo->sd->ctrl_handler; > + vpfe->current_input = index; > + vpfe->std_index = 0; > + > + /* set the bus/interface parameter for the sub device in ccdc */ > + ret = vpfe_ccdc_set_hw_if_params(&vpfe->ccdc, &sdinfo->vpfe_param); > + if (ret) > + return ret; > + > + /* set the default image parameters in the device */ > + return vpfe_config_image_format(vpfe, > + vpfe_standards[vpfe->std_index].std_id); > + > +get_out: > + return ret; > +} > + > +static int vpfe_s_input(struct file *file, void *priv, unsigned int index) > +{ > + struct vpfe_device *vpfe = video_drvdata(file); > + > + vpfe_dbg(2, vpfe, > + "vpfe_s_input: index: %d\n", index); > + > + return vpfe_set_input(vpfe, index); > +} > + > +static int vpfe_querystd(struct file *file, void *priv, v4l2_std_id *std_id) > +{ > + struct vpfe_device *vpfe = video_drvdata(file); > + struct vpfe_subdev_info *sdinfo; > + > + vpfe_dbg(2, vpfe, "vpfe_querystd\n"); > + > + sdinfo = vpfe->current_subdev; > + if (!(sdinfo->inputs[0].capabilities & V4L2_IN_CAP_STD)) > + return -ENODATA; > + > + /* Call querystd function of decoder device */ > + return v4l2_device_call_until_err(&vpfe->v4l2_dev, sdinfo->grp_id, > + video, querystd, std_id); > +} > + > +static int vpfe_s_std(struct file *file, void *priv, v4l2_std_id std_id) > +{ > + struct vpfe_device *vpfe = video_drvdata(file); > + struct vpfe_subdev_info *sdinfo; > + int ret; > + > + vpfe_dbg(2, vpfe, "vpfe_s_std\n"); > + > + sdinfo = vpfe->current_subdev; > + if (!(sdinfo->inputs[0].capabilities & V4L2_IN_CAP_STD)) > + return -ENODATA; > + > + /* If streaming is started, return error */ > + if (vb2_is_busy(&vpfe->buffer_queue)) { > + vpfe_err(vpfe, "%s device busy\n", __func__); > + ret = -EBUSY; > + return ret; > + } > + > + ret = v4l2_device_call_until_err(&vpfe->v4l2_dev, sdinfo->grp_id, > + video, s_std, std_id); > + if (ret < 0) { > + vpfe_err(vpfe, "Failed to set standard\n"); > + return ret; > + } > + ret = vpfe_config_image_format(vpfe, std_id); > + > + return ret; > +} > + > +static int vpfe_g_std(struct file *file, void *priv, v4l2_std_id *std_id) > +{ > + struct vpfe_device *vpfe = video_drvdata(file); > + struct vpfe_subdev_info *sdinfo; > + > + vpfe_dbg(2, vpfe, "vpfe_g_std\n"); > + > + sdinfo = vpfe->current_subdev; > + if (sdinfo->inputs[0].capabilities != V4L2_IN_CAP_STD) > + return -ENODATA; > + > + *std_id = vpfe_standards[vpfe->std_index].std_id; > + > + return 0; > +} > + > +/* > + * vpfe_calculate_offsets : This function calculates buffers offset > + * for top and bottom field > + */ > +static void vpfe_calculate_offsets(struct vpfe_device *vpfe) > +{ > + struct v4l2_rect image_win; > + > + vpfe_dbg(2, vpfe, "vpfe_calculate_offsets\n"); > + > + vpfe_ccdc_get_image_window(&vpfe->ccdc, &image_win); > + vpfe->field_off = image_win.height * image_win.width; > +} > + > +/* > + * vpfe_queue_setup - Callback function for buffer setup. > + * @vq: vb2_queue ptr > + * @fmt: v4l2 format > + * @nbuffers: ptr to number of buffers requested by application > + * @nplanes:: contains number of distinct video planes needed to hold a frame > + * @sizes[]: contains the size (in bytes) of each plane. > + * @alloc_ctxs: ptr to allocation context > + * > + * This callback function is called when reqbuf() is called to adjust > + * the buffer count and buffer size > + */ > +static int vpfe_queue_setup(struct vb2_queue *vq, > + const struct v4l2_format *fmt, > + unsigned int *nbuffers, unsigned int *nplanes, > + unsigned int sizes[], void *alloc_ctxs[]) > +{ > + struct vpfe_device *vpfe = vb2_get_drv_priv(vq); > + > + if (fmt && fmt->fmt.pix.sizeimage < vpfe->fmt.fmt.pix.sizeimage) > + return -EINVAL; > + > + if (vq->num_buffers + *nbuffers < 3) > + *nbuffers = 3 - vq->num_buffers; > + > + *nplanes = 1; > + sizes[0] = fmt ? fmt->fmt.pix.sizeimage : vpfe->fmt.fmt.pix.sizeimage; > + alloc_ctxs[0] = vpfe->alloc_ctx; > + > + vpfe_dbg(1, vpfe, > + "nbuffers=%d, size=%u\n", *nbuffers, sizes[0]); > + > + /* Calculate field offset */ > + vpfe_calculate_offsets(vpfe); > + > + return 0; > +} > + > +/* > + * vpfe_buffer_prepare : callback function for buffer prepare > + * @vb: ptr to vb2_buffer > + * > + * This is the callback function for buffer prepare when vb2_qbuf() > + * function is called. The buffer is prepared and user space virtual address > + * or user address is converted into physical address > + */ > +static int vpfe_buffer_prepare(struct vb2_buffer *vb) > +{ > + struct vpfe_device *vpfe = vb2_get_drv_priv(vb->vb2_queue); > + > + vb2_set_plane_payload(vb, 0, vpfe->fmt.fmt.pix.sizeimage); > + > + if (vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0)) > + return -EINVAL; > + > + vb->v4l2_buf.field = vpfe->fmt.fmt.pix.field; > + > + return 0; > +} > + > +/* > + * vpfe_buffer_queue : Callback function to add buffer to DMA queue > + * @vb: ptr to vb2_buffer > + */ > +static void vpfe_buffer_queue(struct vb2_buffer *vb) > +{ > + struct vpfe_device *vpfe = vb2_get_drv_priv(vb->vb2_queue); > + struct vpfe_cap_buffer *buf = to_vpfe_buffer(vb); > + unsigned long flags = 0; > + > + /* add the buffer to the DMA queue */ > + spin_lock_irqsave(&vpfe->dma_queue_lock, flags); > + list_add_tail(&buf->list, &vpfe->dma_queue); > + spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags); > +} > + > +/* > + * vpfe_start_streaming : Starts the DMA engine for streaming > + * @vb: ptr to vb2_buffer > + * @count: number of buffers > + */ > +static int vpfe_start_streaming(struct vb2_queue *vq, unsigned int count) > +{ > + struct vpfe_device *vpfe = vb2_get_drv_priv(vq); > + struct vpfe_cap_buffer *buf, *tmp; > + struct vpfe_subdev_info *sdinfo; > + unsigned long flags; > + unsigned long addr; > + int ret; > + > + spin_lock_irqsave(&vpfe->dma_queue_lock, flags); > + > + vpfe->field = 0; > + vpfe->sequence = 0; > + > + sdinfo = vpfe->current_subdev; > + > + vpfe_attach_irq(vpfe); > + > + if (vpfe->ccdc.ccdc_cfg.if_type == VPFE_RAW_BAYER) > + vpfe_ccdc_config_raw(&vpfe->ccdc); > + else > + vpfe_ccdc_config_ycbcr(&vpfe->ccdc); > + > + /* Get the next frame from the buffer queue */ > + vpfe->next_frm = list_entry(vpfe->dma_queue.next, > + struct vpfe_cap_buffer, list); > + vpfe->cur_frm = vpfe->next_frm; > + /* Remove buffer from the buffer queue */ > + list_del(&vpfe->cur_frm->list); > + spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags); > + > + addr = vb2_dma_contig_plane_dma_addr(&vpfe->cur_frm->vb, 0); > + > + vpfe_set_sdr_addr(&vpfe->ccdc, (unsigned long)(addr)); > + > + vpfe_pcr_enable(&vpfe->ccdc, 1); > + > + ret = v4l2_subdev_call(sdinfo->sd, video, s_stream, 1); > + if (ret < 0) { > + vpfe_err(vpfe, "Error in attaching interrupt handle\n"); > + goto err; > + } > + > + return 0; > + > +err: > + list_for_each_entry_safe(buf, tmp, &vpfe->dma_queue, list) { > + list_del(&buf->list); > + vb2_buffer_done(&buf->vb, VB2_BUF_STATE_QUEUED); > + } > + spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags); > + > + return ret; > +} > + > +/* > + * vpfe_stop_streaming : Stop the DMA engine > + * @vq: ptr to vb2_queue > + * > + * This callback stops the DMA engine and any remaining buffers > + * in the DMA queue are released. > + */ > +static void vpfe_stop_streaming(struct vb2_queue *vq) > +{ > + struct vpfe_device *vpfe = vb2_get_drv_priv(vq); > + struct vpfe_subdev_info *sdinfo; > + unsigned long flags; > + int ret; > + > + vpfe_pcr_enable(&vpfe->ccdc, 0); > + > + vpfe_detach_irq(vpfe); > + > + sdinfo = vpfe->current_subdev; > + ret = v4l2_subdev_call(sdinfo->sd, video, s_stream, 0); > + if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) > + vpfe_dbg(1, vpfe, "stream off failed in subdev\n"); > + > + /* release all active buffers */ > + spin_lock_irqsave(&vpfe->dma_queue_lock, flags); > + if (vpfe->cur_frm == vpfe->next_frm) { > + vb2_buffer_done(&vpfe->cur_frm->vb, VB2_BUF_STATE_ERROR); > + } else { > + if (vpfe->cur_frm != NULL) > + vb2_buffer_done(&vpfe->cur_frm->vb, > + VB2_BUF_STATE_ERROR); > + if (vpfe->next_frm != NULL) > + vb2_buffer_done(&vpfe->next_frm->vb, > + VB2_BUF_STATE_ERROR); > + } > + > + while (!list_empty(&vpfe->dma_queue)) { > + vpfe->next_frm = list_entry(vpfe->dma_queue.next, > + struct vpfe_cap_buffer, list); > + list_del(&vpfe->next_frm->list); > + vb2_buffer_done(&vpfe->next_frm->vb, VB2_BUF_STATE_ERROR); > + } > + spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags); > +} > + > +static int vpfe_cropcap(struct file *file, void *priv, > + struct v4l2_cropcap *crop) > +{ > + struct vpfe_device *vpfe = video_drvdata(file); > + > + vpfe_dbg(2, vpfe, "vpfe_cropcap\n"); > + > + if (vpfe->std_index >= ARRAY_SIZE(vpfe_standards)) > + return -EINVAL; > + > + memset(crop, 0, sizeof(struct v4l2_cropcap)); > + > + crop->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; > + crop->defrect.width = vpfe_standards[vpfe->std_index].width; > + crop->bounds.width = crop->defrect.width; > + crop->defrect.height = vpfe_standards[vpfe->std_index].height; > + crop->bounds.height = crop->defrect.height; > + crop->pixelaspect = vpfe_standards[vpfe->std_index].pixelaspect; > + > + return 0; > +} > + > +static int > +vpfe_g_selection(struct file *file, void *fh, struct v4l2_selection *s) > +{ > + struct vpfe_device *vpfe = video_drvdata(file); > + > + switch (s->target) { > + case V4L2_SEL_TGT_COMPOSE_DEFAULT: > + case V4L2_SEL_TGT_COMPOSE_BOUNDS: > + case V4L2_SEL_TGT_CROP_BOUNDS: > + case V4L2_SEL_TGT_CROP_DEFAULT: > + s->r.left = s->r.top = 0; > + s->r.width = vpfe->crop.width; > + s->r.height = vpfe->crop.height; > + break; > + > + case V4L2_SEL_TGT_COMPOSE: Why is COMPOSE supported when AFAICT only crop is implemented? > + case V4L2_SEL_TGT_CROP: > + s->r = vpfe->crop; > + break; > + > + default: > + return -EINVAL; > + } > + > + return 0; > +} > + > +static int enclosed_rectangle(struct v4l2_rect *a, struct v4l2_rect *b) > +{ > + if (a->left < b->left || a->top < b->top) > + return 0; > + > + if (a->left + a->width > b->left + b->width) > + return 0; > + > + if (a->top + a->height > b->top + b->height) > + return 0; > + > + return 1; > +} > + > +static int > +vpfe_s_selection(struct file *file, void *fh, struct v4l2_selection *s) > +{ > + struct vpfe_device *vpfe = video_drvdata(file); > + struct v4l2_rect cr = vpfe->crop; > + struct v4l2_rect r = s->r; > + > + /* If streaming is started, return error */ > + if (vb2_is_busy(&vpfe->buffer_queue)) { > + vpfe_err(vpfe, "%s device busy\n", __func__); > + return -EBUSY; > + } > + > + if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || > + (s->target != V4L2_SEL_TGT_COMPOSE && Same question. > + s->target != V4L2_SEL_TGT_CROP)) > + return -EINVAL; > + > + v4l_bound_align_image(&r.width, 0, cr.width, 0, > + &r.height, 0, cr.height, 0, 0); > + > + r.left = clamp_t(unsigned int, r.left, 0, cr.width - r.width); > + r.top = clamp_t(unsigned int, r.top, 0, cr.height - r.height); > + > + if (s->flags & V4L2_SEL_FLAG_LE && !enclosed_rectangle(&r, &s->r)) > + return -ERANGE; > + > + if (s->flags & V4L2_SEL_FLAG_GE && !enclosed_rectangle(&s->r, &r)) > + return -ERANGE; > + > + s->r = vpfe->crop = r; > + > + vpfe_ccdc_set_image_window(&vpfe->ccdc, &r, vpfe->bpp); > + vpfe->fmt.fmt.pix.width = r.width; > + vpfe->fmt.fmt.pix.height = r.height; > + vpfe->fmt.fmt.pix.bytesperline = vpfe_ccdc_get_line_length(&vpfe->ccdc); > + vpfe->fmt.fmt.pix.sizeimage = vpfe->fmt.fmt.pix.bytesperline * > + vpfe->fmt.fmt.pix.height; > + > + vpfe_dbg(1, vpfe, "cropped (%d,%d)/%dx%d of %dx%d\n", > + r.left, r.top, r.width, r.height, cr.width, cr.height); > + > + return 0; > +} > + > +static long vpfe_ioctl_default(struct file *file, void *priv, > + bool valid_prio, unsigned int cmd, void *param) > +{ > + struct vpfe_device *vpfe = video_drvdata(file); > + int ret; > + > + vpfe_dbg(2, vpfe, "vpfe_ioctl_default\n"); > + > + if (!valid_prio) { > + vpfe_err(vpfe, "%s device busy\n", __func__); > + return -EBUSY; > + } > + > + /* If streaming is started, return error */ > + if (vb2_is_busy(&vpfe->buffer_queue)) { > + vpfe_err(vpfe, "%s device busy\n", __func__); > + return -EBUSY; > + } > + > + switch (cmd) { > + case VIDIOC_AM437X_CCDC_CFG: > + ret = vpfe_ccdc_set_params(&vpfe->ccdc, param); > + if (ret) { > + vpfe_dbg(2, vpfe, > + "Error setting parameters in CCDC\n"); > + return ret; > + } > + ret = vpfe_get_ccdc_image_format(vpfe, > + &vpfe->fmt); > + if (ret < 0) { > + vpfe_dbg(2, vpfe, > + "Invalid image format at CCDC\n"); > + return ret; > + } > + break; > + > + default: > + ret = -ENOTTY; > + break; > + } > + > + return ret; > +} > + > +static const struct vb2_ops vpfe_video_qops = { > + .wait_prepare = vb2_ops_wait_prepare, > + .wait_finish = vb2_ops_wait_finish, > + .queue_setup = vpfe_queue_setup, > + .buf_prepare = vpfe_buffer_prepare, > + .buf_queue = vpfe_buffer_queue, > + .start_streaming = vpfe_start_streaming, > + .stop_streaming = vpfe_stop_streaming, > +}; > + > +/* vpfe capture driver file operations */ > +static const struct v4l2_file_operations vpfe_fops = { > + .owner = THIS_MODULE, > + .open = vpfe_open, > + .release = vpfe_release, > + .read = vb2_fop_read, > + .poll = vb2_fop_poll, > + .unlocked_ioctl = video_ioctl2, > + .mmap = vb2_fop_mmap, > + > +}; > + > +/* vpfe capture ioctl operations */ > +static const struct v4l2_ioctl_ops vpfe_ioctl_ops = { > + .vidioc_querycap = vpfe_querycap, > + .vidioc_enum_fmt_vid_cap = vpfe_enum_fmt, > + .vidioc_g_fmt_vid_cap = vpfe_g_fmt, > + .vidioc_s_fmt_vid_cap = vpfe_s_fmt, > + .vidioc_try_fmt_vid_cap = vpfe_try_fmt, > + > + .vidioc_enum_framesizes = vpfe_enum_size, > + > + .vidioc_enum_input = vpfe_enum_input, > + .vidioc_g_input = vpfe_g_input, > + .vidioc_s_input = vpfe_s_input, > + > + .vidioc_querystd = vpfe_querystd, > + .vidioc_s_std = vpfe_s_std, > + .vidioc_g_std = vpfe_g_std, > + > + .vidioc_reqbufs = vb2_ioctl_reqbufs, > + .vidioc_create_bufs = vb2_ioctl_create_bufs, > + .vidioc_prepare_buf = vb2_ioctl_prepare_buf, > + .vidioc_querybuf = vb2_ioctl_querybuf, > + .vidioc_qbuf = vb2_ioctl_qbuf, > + .vidioc_dqbuf = vb2_ioctl_dqbuf, > + .vidioc_expbuf = vb2_ioctl_expbuf, > + .vidioc_streamon = vb2_ioctl_streamon, > + .vidioc_streamoff = vb2_ioctl_streamoff, > + > + .vidioc_log_status = v4l2_ctrl_log_status, > + .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, > + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, > + > + .vidioc_cropcap = vpfe_cropcap, > + .vidioc_g_selection = vpfe_g_selection, > + .vidioc_s_selection = vpfe_s_selection, > + > + .vidioc_default = vpfe_ioctl_default, > +}; > + > +static int > +vpfe_async_bound(struct v4l2_async_notifier *notifier, > + struct v4l2_subdev *subdev, > + struct v4l2_async_subdev *asd) > +{ > + struct vpfe_device *vpfe = container_of(notifier->v4l2_dev, > + struct vpfe_device, v4l2_dev); > + struct v4l2_subdev_mbus_code_enum mbus_code; > + struct vpfe_subdev_info *sdinfo; > + bool found = false; > + int i, j; > + > + vpfe_dbg(1, vpfe, "vpfe_async_bound\n"); > + > + for (i = 0; i < ARRAY_SIZE(vpfe->cfg->asd); i++) { > + sdinfo = &vpfe->cfg->sub_devs[i]; > + > + if (!strcmp(sdinfo->name, subdev->name)) { > + vpfe->sd[i] = subdev; > + vpfe_info(vpfe, > + "v4l2 sub device %s registered\n", > + subdev->name); > + vpfe->sd[i]->grp_id = > + sdinfo->grp_id; > + /* update tvnorms from the sub devices */ > + for (j = 0; j < 1; j++) > + vpfe->video_dev->tvnorms |= > + sdinfo->inputs[j].std; > + > + found = true; > + break; > + } > + } > + > + if (!found) { > + vpfe_info(vpfe, "sub device (%s) not matched\n", subdev->name); > + return -EINVAL; > + } > + > + for (j = 0; ; ++j) { > + int ret; > + > + memset(&mbus_code, 0, sizeof(mbus_code)); > + mbus_code.index = j; > + ret = v4l2_subdev_call(subdev, pad, enum_mbus_code, > + NULL, &mbus_code); > + if (ret) > + break; > + > + find_format_by_code(mbus_code.code, true); > + } > + > + return 0; > +} > + > +static int vpfe_probe_complete(struct vpfe_device *vpfe) > +{ > + struct video_device *vdev; > + struct vb2_queue *q; > + int err; > + > + spin_lock_init(&vpfe->dma_queue_lock); > + mutex_init(&vpfe->lock); > + > + vpfe->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; > + > + /* set first sub device as current one */ > + vpfe->current_subdev = &vpfe->cfg->sub_devs[0]; > + vpfe->v4l2_dev.ctrl_handler = vpfe->sd[0]->ctrl_handler; > + > + err = vpfe_set_input(vpfe, 0); > + if (err) > + goto probe_out; > + > + /* Initialize videobuf2 queue as per the buffer type */ > + vpfe->alloc_ctx = vb2_dma_contig_init_ctx(vpfe->pdev); > + if (IS_ERR(vpfe->alloc_ctx)) { > + vpfe_err(vpfe, "Failed to get the context\n"); > + err = PTR_ERR(vpfe->alloc_ctx); > + goto probe_out; > + } > + > + q = &vpfe->buffer_queue; > + q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; > + q->io_modes = VB2_MMAP | VB2_DMABUF | VB2_READ; > + q->drv_priv = vpfe; > + q->ops = &vpfe_video_qops; > + q->mem_ops = &vb2_dma_contig_memops; > + q->buf_struct_size = sizeof(struct vpfe_cap_buffer); > + q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; > + q->lock = &vpfe->lock; > + q->min_buffers_needed = 1; > + > + err = vb2_queue_init(q); > + if (err) { > + vpfe_err(vpfe, "vb2_queue_init() failed\n"); > + vb2_dma_contig_cleanup_ctx(vpfe->alloc_ctx); > + goto probe_out; > + } > + > + INIT_LIST_HEAD(&vpfe->dma_queue); > + > + vdev = vpfe->video_dev; > + strlcpy(vdev->name, VPFE_MODULE_NAME, sizeof(vdev->name)); > + vdev->release = video_device_release; > + vdev->fops = &vpfe_fops; > + vdev->ioctl_ops = &vpfe_ioctl_ops; > + vdev->v4l2_dev = &vpfe->v4l2_dev; > + vdev->vfl_dir = VFL_DIR_RX; > + vdev->queue = q; > + vdev->lock = &vpfe->lock; > + video_set_drvdata(vdev, vpfe); > + err = video_register_device(vpfe->video_dev, VFL_TYPE_GRABBER, -1); > + if (err) { > + vpfe_err(vpfe, > + "Unable to register video device.\n"); > + goto probe_out; > + } > + > + return 0; > + > +probe_out: > + v4l2_device_unregister(&vpfe->v4l2_dev); > + return err; > +} > + > +static int vpfe_async_complete(struct v4l2_async_notifier *notifier) > +{ > + struct vpfe_device *vpfe = container_of(notifier->v4l2_dev, > + struct vpfe_device, v4l2_dev); > + > + return vpfe_probe_complete(vpfe); > +} > + > +static struct vpfe_config * > +vpfe_get_pdata(struct platform_device *pdev) > +{ > + struct device_node *endpoint = NULL, *rem = NULL; > + struct v4l2_of_endpoint bus_cfg; > + struct vpfe_subdev_info *sdinfo; > + struct vpfe_config *pdata; > + unsigned int flags; > + unsigned int i; > + int err; > + > + dev_dbg(&pdev->dev, "vpfe_get_pdata\n"); > + > + if (!IS_ENABLED(CONFIG_OF) || !pdev->dev.of_node) > + return pdev->dev.platform_data; > + > + pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); > + if (!pdata) > + return NULL; > + > + for (i = 0; ; i++) { > + endpoint = of_graph_get_next_endpoint(pdev->dev.of_node, > + endpoint); > + if (!endpoint) > + break; > + > + sdinfo = &pdata->sub_devs[i]; > + sdinfo->grp_id = 0; > + > + /* we only support camera */ > + sdinfo->inputs[0].index = i; > + strcpy(sdinfo->inputs[0].name, "Camera"); > + sdinfo->inputs[0].type = V4L2_INPUT_TYPE_CAMERA; > + sdinfo->inputs[0].std = V4L2_STD_ALL; > + sdinfo->inputs[0].capabilities = V4L2_IN_CAP_STD; > + > + sdinfo->can_route = 0; > + sdinfo->routes = NULL; > + > + of_property_read_u32(endpoint, "ti,am437x-vpfe-interface", > + &sdinfo->vpfe_param.if_type); > + if (sdinfo->vpfe_param.if_type < 0 || > + sdinfo->vpfe_param.if_type > 4) { > + sdinfo->vpfe_param.if_type = VPFE_RAW_BAYER; > + } > + > + err = v4l2_of_parse_endpoint(endpoint, &bus_cfg); > + if (err) { > + dev_err(&pdev->dev, "Could not parse the endpoint\n"); > + goto done; > + } > + > + sdinfo->vpfe_param.bus_width = bus_cfg.bus.parallel.bus_width; > + > + if (sdinfo->vpfe_param.bus_width < 8 || > + sdinfo->vpfe_param.bus_width > 16) { > + dev_err(&pdev->dev, "Invalid bus width.\n"); > + goto done; > + } > + > + flags = bus_cfg.bus.parallel.flags; > + > + if (flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) > + sdinfo->vpfe_param.hdpol = 1; > + > + if (flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) > + sdinfo->vpfe_param.vdpol = 1; > + > + rem = of_graph_get_remote_port_parent(endpoint); > + if (!rem) { > + dev_err(&pdev->dev, "Remote device at %s not found\n", > + endpoint->full_name); > + goto done; > + } > + > + strncpy(sdinfo->name, rem->name, sizeof(sdinfo->name)); > + > + pdata->asd[i] = devm_kzalloc(&pdev->dev, > + sizeof(struct v4l2_async_subdev), > + GFP_KERNEL); > + pdata->asd[i]->match_type = V4L2_ASYNC_MATCH_OF; > + pdata->asd[i]->match.of.node = rem; > + of_node_put(endpoint); > + of_node_put(rem); > + } > + > + of_node_put(endpoint); > + return pdata; > + > +done: > + of_node_put(endpoint); > + of_node_put(rem); > + return NULL; > +} > + > +/* > + * vpfe_probe : This function creates device entries by register > + * itself to the V4L2 driver and initializes fields of each > + * device objects > + */ > +static int vpfe_probe(struct platform_device *pdev) > +{ > + struct vpfe_config *vpfe_cfg = vpfe_get_pdata(pdev); > + struct vpfe_device *vpfe; > + struct vpfe_ccdc *ccdc; > + struct resource *res; > + int ret; > + > + if (!vpfe_cfg) { > + dev_err(&pdev->dev, "No platform data\n"); > + return -EINVAL; > + } > + > + vpfe = devm_kzalloc(&pdev->dev, sizeof(*vpfe), GFP_KERNEL); > + if (!vpfe) > + return -ENOMEM; > + > + vpfe->pdev = &pdev->dev; > + vpfe->cfg = vpfe_cfg; > + ccdc = &vpfe->ccdc; > + > + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); > + ccdc->ccdc_cfg.base_addr = devm_ioremap_resource(&pdev->dev, res); > + if (IS_ERR(ccdc->ccdc_cfg.base_addr)) > + return PTR_ERR(ccdc->ccdc_cfg.base_addr); > + > + vpfe->irq = platform_get_irq(pdev, 0); > + if (vpfe->irq <= 0) { > + dev_err(&pdev->dev, "No IRQ resource\n"); > + return -ENODEV; > + } > + > + ret = devm_request_irq(vpfe->pdev, vpfe->irq, vpfe_isr, 0, > + "vpfe_capture0", vpfe); > + if (ret) { > + dev_err(&pdev->dev, "Unable to request interrupt\n"); > + return -EINVAL; > + } > + > + vpfe->video_dev = video_device_alloc(); > + if (!vpfe->video_dev) { > + dev_err(&pdev->dev, "Unable to alloc video device\n"); > + return -ENOMEM; > + } > + > + ret = v4l2_device_register(&pdev->dev, &vpfe->v4l2_dev); > + if (ret) { > + vpfe_err(vpfe, > + "Unable to register v4l2 device.\n"); > + goto probe_out_video_release; > + } > + > + /* set the driver data in platform device */ > + platform_set_drvdata(pdev, vpfe); > + /* Enabling module functional clock */ > + pm_runtime_enable(&pdev->dev); > + > + /* for now just enable it here instead of waiting for the open */ > + pm_runtime_get_sync(&pdev->dev); > + > + vpfe_ccdc_config_defaults(ccdc); > + > + pm_runtime_put_sync(&pdev->dev); > + > + vpfe->sd = devm_kzalloc(&pdev->dev, sizeof(struct v4l2_subdev *) * > + ARRAY_SIZE(vpfe->cfg->asd), GFP_KERNEL); > + if (!vpfe->sd) { > + ret = -ENOMEM; > + goto probe_out_v4l2_unregister; > + } > + > + vpfe->notifier.subdevs = vpfe->cfg->asd; > + vpfe->notifier.num_subdevs = ARRAY_SIZE(vpfe->cfg->asd); > + vpfe->notifier.bound = vpfe_async_bound; > + vpfe->notifier.complete = vpfe_async_complete; > + ret = v4l2_async_notifier_register(&vpfe->v4l2_dev, > + &vpfe->notifier); > + if (ret) { > + vpfe_err(vpfe, "Error registering async notifier\n"); > + ret = -EINVAL; > + goto probe_out_v4l2_unregister; > + } > + > + return 0; > + > +probe_out_v4l2_unregister: > + v4l2_device_unregister(&vpfe->v4l2_dev); > +probe_out_video_release: > + if (!video_is_registered(vpfe->video_dev)) > + video_device_release(vpfe->video_dev); > + return ret; > +} > + > +/* > + * vpfe_remove : It un-register device from V4L2 driver > + */ > +static int vpfe_remove(struct platform_device *pdev) > +{ > + struct vpfe_device *vpfe = platform_get_drvdata(pdev); > + > + vpfe_dbg(2, vpfe, "vpfe_remove\n"); > + > + pm_runtime_disable(&pdev->dev); > + > + v4l2_async_notifier_unregister(&vpfe->notifier); > + v4l2_device_unregister(&vpfe->v4l2_dev); > + video_unregister_device(vpfe->video_dev); > + > + return 0; > +} > + > +#ifdef CONFIG_PM_SLEEP > + > +static void vpfe_save_context(struct vpfe_ccdc *ccdc) > +{ > + ccdc->ccdc_ctx[VPFE_PCR >> 2] = vpfe_reg_read(ccdc, VPFE_PCR); > + ccdc->ccdc_ctx[VPFE_SYNMODE >> 2] = vpfe_reg_read(ccdc, VPFE_SYNMODE); > + ccdc->ccdc_ctx[VPFE_SDOFST >> 2] = vpfe_reg_read(ccdc, VPFE_SDOFST); > + ccdc->ccdc_ctx[VPFE_SDR_ADDR >> 2] = vpfe_reg_read(ccdc, VPFE_SDR_ADDR); > + ccdc->ccdc_ctx[VPFE_CLAMP >> 2] = vpfe_reg_read(ccdc, VPFE_CLAMP); > + ccdc->ccdc_ctx[VPFE_DCSUB >> 2] = vpfe_reg_read(ccdc, VPFE_DCSUB); > + ccdc->ccdc_ctx[VPFE_COLPTN >> 2] = vpfe_reg_read(ccdc, VPFE_COLPTN); > + ccdc->ccdc_ctx[VPFE_BLKCMP >> 2] = vpfe_reg_read(ccdc, VPFE_BLKCMP); > + ccdc->ccdc_ctx[VPFE_VDINT >> 2] = vpfe_reg_read(ccdc, VPFE_VDINT); > + ccdc->ccdc_ctx[VPFE_ALAW >> 2] = vpfe_reg_read(ccdc, VPFE_ALAW); > + ccdc->ccdc_ctx[VPFE_REC656IF >> 2] = vpfe_reg_read(ccdc, VPFE_REC656IF); > + ccdc->ccdc_ctx[VPFE_CCDCFG >> 2] = vpfe_reg_read(ccdc, VPFE_CCDCFG); > + ccdc->ccdc_ctx[VPFE_CULLING >> 2] = vpfe_reg_read(ccdc, VPFE_CULLING); > + ccdc->ccdc_ctx[VPFE_HD_VD_WID >> 2] = vpfe_reg_read(ccdc, > + VPFE_HD_VD_WID); > + ccdc->ccdc_ctx[VPFE_PIX_LINES >> 2] = vpfe_reg_read(ccdc, > + VPFE_PIX_LINES); > + ccdc->ccdc_ctx[VPFE_HORZ_INFO >> 2] = vpfe_reg_read(ccdc, > + VPFE_HORZ_INFO); > + ccdc->ccdc_ctx[VPFE_VERT_START >> 2] = vpfe_reg_read(ccdc, > + VPFE_VERT_START); > + ccdc->ccdc_ctx[VPFE_VERT_LINES >> 2] = vpfe_reg_read(ccdc, > + VPFE_VERT_LINES); > + ccdc->ccdc_ctx[VPFE_HSIZE_OFF >> 2] = vpfe_reg_read(ccdc, > + VPFE_HSIZE_OFF); > +} > + > +static int vpfe_suspend(struct device *dev) > +{ > + struct platform_device *pdev = to_platform_device(dev); > + struct vpfe_device *vpfe = platform_get_drvdata(pdev); > + struct vpfe_ccdc *ccdc = &vpfe->ccdc; > + > + /* if streaming has not started we dont care */ > + if (!vb2_start_streaming_called(&vpfe->buffer_queue)) > + return 0; > + > + pm_runtime_get_sync(dev); > + vpfe_config_enable(ccdc, 1); > + > + /* Save VPFE context */ > + vpfe_save_context(ccdc); > + > + /* Disable CCDC */ > + vpfe_pcr_enable(ccdc, 0); > + vpfe_config_enable(ccdc, 0); > + > + /* Disable both master and slave clock */ > + pm_runtime_put_sync(dev); > + > + /* Select sleep pin state */ > + pinctrl_pm_select_sleep_state(dev); > + > + return 0; > +} > + > +static void vpfe_restore_context(struct vpfe_ccdc *ccdc) > +{ > + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_SYNMODE >> 2], VPFE_SYNMODE); > + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_CULLING >> 2], VPFE_CULLING); > + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_SDOFST >> 2], VPFE_SDOFST); > + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_SDR_ADDR >> 2], VPFE_SDR_ADDR); > + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_CLAMP >> 2], VPFE_CLAMP); > + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_DCSUB >> 2], VPFE_DCSUB); > + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_COLPTN >> 2], VPFE_COLPTN); > + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_BLKCMP >> 2], VPFE_BLKCMP); > + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_VDINT >> 2], VPFE_VDINT); > + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_ALAW >> 2], VPFE_ALAW); > + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_REC656IF >> 2], VPFE_REC656IF); > + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_CCDCFG >> 2], VPFE_CCDCFG); > + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_PCR >> 2], VPFE_PCR); > + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_HD_VD_WID >> 2], > + VPFE_HD_VD_WID); > + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_PIX_LINES >> 2], > + VPFE_PIX_LINES); > + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_HORZ_INFO >> 2], > + VPFE_HORZ_INFO); > + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_VERT_START >> 2], > + VPFE_VERT_START); > + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_VERT_LINES >> 2], > + VPFE_VERT_LINES); > + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_HSIZE_OFF >> 2], > + VPFE_HSIZE_OFF); > +} > + > +static int vpfe_resume(struct device *dev) > +{ > + struct platform_device *pdev = to_platform_device(dev); > + struct vpfe_device *vpfe = platform_get_drvdata(pdev); > + struct vpfe_ccdc *ccdc = &vpfe->ccdc; > + > + /* if streaming has not started we dont care */ > + if (!vb2_start_streaming_called(&vpfe->buffer_queue)) > + return 0; > + > + /* Enable both master and slave clock */ > + pm_runtime_get_sync(dev); > + vpfe_config_enable(ccdc, 1); > + > + /* Restore VPFE context */ > + vpfe_restore_context(ccdc); > + > + vpfe_config_enable(ccdc, 0); > + pm_runtime_put_sync(dev); > + > + /* Select default pin state */ > + pinctrl_pm_select_default_state(dev); > + > + return 0; > +} > + > +#endif > + > +static SIMPLE_DEV_PM_OPS(vpfe_pm_ops, vpfe_suspend, vpfe_resume); > + > +static const struct of_device_id vpfe_of_match[] = { > + { .compatible = "ti,am437x-vpfe", }, > + { /* sentinel */ }, > +}; > +MODULE_DEVICE_TABLE(of, vpfe_of_match); > + > +static struct platform_driver vpfe_driver = { > + .probe = vpfe_probe, > + .remove = vpfe_remove, > + .driver = { > + .name = VPFE_MODULE_NAME, > + .owner = THIS_MODULE, > + .pm = &vpfe_pm_ops, > + .of_match_table = of_match_ptr(vpfe_of_match), > + }, > +}; > + > +module_platform_driver(vpfe_driver); > + > +MODULE_AUTHOR("Texas Instruments"); > +MODULE_DESCRIPTION("TI AM437x VPFE driver"); > +MODULE_LICENSE("GPL"); > +MODULE_VERSION(VPFE_VERSION); Regards, Hans -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/Documentation/devicetree/bindings/media/ti-am437x-vpfe.txt b/Documentation/devicetree/bindings/media/ti-am437x-vpfe.txt new file mode 100644 index 0000000..3932e76 --- /dev/null +++ b/Documentation/devicetree/bindings/media/ti-am437x-vpfe.txt @@ -0,0 +1,61 @@ +Texas Instruments AM437x CAMERA (VPFE) +-------------------------------------- + +The Video Processing Front End (VPFE) is a key component for image capture +applications. The capture module provides the system interface and the +processing capability to connect RAW image-sensor modules and video decoders +to the AM437x device. + +Required properties: +- compatible: must be "ti,am437x-vpfe" +- reg: physical base address and length of the registers set for the device; +- interrupts: should contain IRQ line for the VPFE; +- ti,am437x-vpfe-interface: can be one of the following, + 0 - Raw Bayer Interface. + 1 - 8 Bit BT656 Interface. + 2 - 10 Bit BT656 Interface. + 3 - YCbCr 8 Bit Interface. + 4 - YCbCr 16 Bit Interface. + +VPFE supports a single port node with parallel bus. It should contain one +'port' child node with child 'endpoint' node. Please refer to the bindings +defined in Documentation/devicetree/bindings/media/video-interfaces.txt. + +Example: + vpfe: vpfe@f0034000 { + compatible = "ti,am437x-vpfe"; + reg = <0x48328000 0x2000>; + interrupts = <GIC_SPI 50 IRQ_TYPE_LEVEL_HIGH>; + + pinctrl-names = "default", "sleep"; + pinctrl-0 = <&vpfe_pins_default>; + pinctrl-1 = <&vpfe_pins_sleep>; + + port { + #address-cells = <1>; + #size-cells = <0>; + + vpfe0_ep: endpoint { + remote-endpoint = <&ov2659_1>; + ti,am437x-vpfe-interface = <0>; + bus-width = <8>; + hsync-active = <0>; + vsync-active = <0>; + }; + }; + }; + + i2c1: i2c@4802a000 { + + ov2659@30 { + compatible = "ti,ov2659"; + reg = <0x30>; + + port { + ov2659_1: endpoint { + remote-endpoint = <&vpfe0_ep>; + bus-width = <8>; + mclk-frequency = <12000000>; + }; + }; + }; diff --git a/MAINTAINERS b/MAINTAINERS index a6288ca..a42d367 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -8537,6 +8537,15 @@ S: Maintained F: drivers/media/platform/davinci/ F: include/media/davinci/ +TI AM437X VPFE DRIVER +M: Lad, Prabhakar <prabhakar.csengg@gmail.com> +L: linux-media@vger.kernel.org +W: http://linuxtv.org/ +Q: http://patchwork.linuxtv.org/project/linux-media/list/ +T: git git://linuxtv.org/mhadli/v4l-dvb-davinci_devices.git +S: Maintained +F: drivers/media/platform/am437x/ + SIS 190 ETHERNET DRIVER M: Francois Romieu <romieu@fr.zoreil.com> L: netdev@vger.kernel.org diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig index 0c61155..6d94045 100644 --- a/drivers/media/platform/Kconfig +++ b/drivers/media/platform/Kconfig @@ -126,6 +126,7 @@ config VIDEO_S3C_CAMIF source "drivers/media/platform/soc_camera/Kconfig" source "drivers/media/platform/exynos4-is/Kconfig" source "drivers/media/platform/s5p-tv/Kconfig" +source "drivers/media/platform/am437x/Kconfig" endif # V4L_PLATFORM_DRIVERS diff --git a/drivers/media/platform/Makefile b/drivers/media/platform/Makefile index b818afb..7bb6d46 100644 --- a/drivers/media/platform/Makefile +++ b/drivers/media/platform/Makefile @@ -49,4 +49,6 @@ obj-$(CONFIG_VIDEO_RENESAS_VSP1) += vsp1/ obj-y += omap/ +obj-$(CONFIG_VIDEO_AM437X_VPFE) += am437x/ + ccflags-y += -I$(srctree)/drivers/media/i2c diff --git a/drivers/media/platform/am437x/Kconfig b/drivers/media/platform/am437x/Kconfig new file mode 100644 index 0000000..97dea72 --- /dev/null +++ b/drivers/media/platform/am437x/Kconfig @@ -0,0 +1,11 @@ +config VIDEO_AM437X_VPFE + tristate "TI AM437x VPFE video capture driver" + depends on VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API + depends on SOC_AM43XX || COMPILE_TEST + select VIDEOBUF2_DMA_CONTIG + help + Support for AM437x Video Processing Front End based Video + Capture Driver. + + To compile this driver as a module, choose M here. The module + will be called ti_vpfe. diff --git a/drivers/media/platform/am437x/Makefile b/drivers/media/platform/am437x/Makefile new file mode 100644 index 0000000..3c6b7bd --- /dev/null +++ b/drivers/media/platform/am437x/Makefile @@ -0,0 +1,2 @@ +ti-vpfe-y := am437x-vpfe.o +obj-$(CONFIG_VIDEO_AM437X_VPFE) += ti-vpfe.o diff --git a/drivers/media/platform/am437x/am437x-vpfe.c b/drivers/media/platform/am437x/am437x-vpfe.c new file mode 100644 index 0000000..f3db23d --- /dev/null +++ b/drivers/media/platform/am437x/am437x-vpfe.c @@ -0,0 +1,2785 @@ +/* + * TI VPFE capture Driver + * + * Copyright (C) 2013 - 2014 Texas Instruments, Inc. + * + * Benoit Parrot <bparrot@ti.com> + * Lad, Prabhakar <prabhakar.csengg@gmail.com> + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#include <linux/delay.h> +#include <linux/err.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/io.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/pm_runtime.h> +#include <linux/slab.h> +#include <linux/uaccess.h> +#include <linux/videodev2.h> + +#include <media/v4l2-common.h> +#include <media/v4l2-ctrls.h> +#include <media/v4l2-event.h> +#include <media/v4l2-of.h> + +#include "am437x-vpfe.h" + +#define VPFE_MODULE_NAME "vpfe" +#define VPFE_VERSION "0.1.0" + +static int debug; +module_param(debug, int, 0644); +MODULE_PARM_DESC(debug, "Debug level 0-8"); + +#define vpfe_dbg(level, dev, fmt, arg...) \ + v4l2_dbg(level, debug, &dev->v4l2_dev, fmt, ##arg) +#define vpfe_info(dev, fmt, arg...) \ + v4l2_info(&dev->v4l2_dev, fmt, ##arg) +#define vpfe_err(dev, fmt, arg...) \ + v4l2_err(&dev->v4l2_dev, fmt, ##arg) + +/* standard information */ +struct vpfe_standard { + v4l2_std_id std_id; + unsigned int width; + unsigned int height; + struct v4l2_fract pixelaspect; + int frame_format; +}; + +const struct vpfe_standard vpfe_standards[] = { + {V4L2_STD_525_60, 720, 480, {11, 10}, 1}, + {V4L2_STD_625_50, 720, 576, {54, 59}, 1}, +}; + +struct bus_format { + unsigned int width; + unsigned int bpp; +}; + +/* + * struct vpfe_fmt - VPFE media bus format information + * @name: V4L2 format description + * @code: V4L2 media bus format code + * @shifted: V4L2 media bus format code for the same pixel layout but + * shifted to be 8 bits per pixel. =0 if format is not shiftable. + * @pixelformat: V4L2 pixel format FCC identifier + * @width: Bits per pixel (when transferred over a bus) + * @bpp: Bytes per pixel (when stored in memory) + * @supported: Indicates format supported by subdev + */ +struct vpfe_fmt { + const char *name; + u32 fourcc; + u32 code; + struct bus_format l; + struct bus_format s; + bool supported; + u32 index; +}; + +static struct vpfe_fmt formats[] = { + { + .name = "YUV 4:2:2 packed, YCbYCr", + .fourcc = V4L2_PIX_FMT_YUYV, + .code = MEDIA_BUS_FMT_YUYV8_2X8, + .l.width = 10, + .l.bpp = 4, + .s.width = 8, + .s.bpp = 2, + .supported = false, + }, { + .name = "YUV 4:2:2 packed, CbYCrY", + .fourcc = V4L2_PIX_FMT_UYVY, + .code = MEDIA_BUS_FMT_UYVY8_2X8, + .l.width = 10, + .l.bpp = 4, + .s.width = 8, + .s.bpp = 2, + .supported = false, + }, { + .name = "YUV 4:2:2 packed, YCrYCb", + .fourcc = V4L2_PIX_FMT_YVYU, + .code = MEDIA_BUS_FMT_YVYU8_2X8, + .l.width = 10, + .l.bpp = 4, + .s.width = 8, + .s.bpp = 2, + .supported = false, + }, { + .name = "YUV 4:2:2 packed, CrYCbY", + .fourcc = V4L2_PIX_FMT_VYUY, + .code = MEDIA_BUS_FMT_VYUY8_2X8, + .l.width = 10, + .l.bpp = 4, + .s.width = 8, + .s.bpp = 2, + .supported = false, + }, { + .name = "RAW8 BGGR", + .fourcc = V4L2_PIX_FMT_SBGGR8, + .code = MEDIA_BUS_FMT_SBGGR8_1X8, + .l.width = 10, + .l.bpp = 2, + .s.width = 8, + .s.bpp = 1, + .supported = false, + }, { + .name = "RAW8 GBRG", + .fourcc = V4L2_PIX_FMT_SGBRG8, + .code = MEDIA_BUS_FMT_SGBRG8_1X8, + .l.width = 10, + .l.bpp = 2, + .s.width = 8, + .s.bpp = 1, + .supported = false, + }, { + .name = "RAW8 GRBG", + .fourcc = V4L2_PIX_FMT_SGRBG8, + .code = MEDIA_BUS_FMT_SGRBG8_1X8, + .l.width = 10, + .l.bpp = 2, + .s.width = 8, + .s.bpp = 1, + .supported = false, + }, { + .name = "RAW8 RGGB", + .fourcc = V4L2_PIX_FMT_SRGGB8, + .code = MEDIA_BUS_FMT_SRGGB8_1X8, + .l.width = 10, + .l.bpp = 2, + .s.width = 8, + .s.bpp = 1, + .supported = false, + }, { + .name = "RGB565 (LE)", + .fourcc = V4L2_PIX_FMT_RGB565, + .code = MEDIA_BUS_FMT_RGB565_2X8_LE, + .l.width = 10, + .l.bpp = 4, + .s.width = 8, + .s.bpp = 2, + .supported = false, + }, { + .name = "RGB565 (BE)", + .fourcc = V4L2_PIX_FMT_RGB565X, + .code = MEDIA_BUS_FMT_RGB565_2X8_BE, + .l.width = 10, + .l.bpp = 4, + .s.width = 8, + .s.bpp = 2, + .supported = false, + }, +}; + +static int +__vpfe_get_format(struct vpfe_device *vpfe, + struct v4l2_format *format, unsigned int *bpp); + +static struct vpfe_fmt *find_format_by_code(unsigned int code, bool set) +{ + struct vpfe_fmt *fmt; + static u32 index; + unsigned int k; + + for (k = 0; k < ARRAY_SIZE(formats); k++) { + fmt = &formats[k]; + if (fmt->code == code) { + if (set) { + fmt->supported = true; + fmt->index = index++; + } + return fmt; + } + } + + return NULL; +} + +static struct vpfe_fmt *find_format_by_pix(unsigned int pixelformat) +{ + struct vpfe_fmt *fmt; + unsigned int k; + + for (k = 0; k < ARRAY_SIZE(formats); k++) { + fmt = &formats[k]; + if (fmt->fourcc == pixelformat) + return fmt; + } + + return NULL; +} + +static void +mbus_to_pix(struct vpfe_device *vpfe, + const struct v4l2_mbus_framefmt *mbus, + struct v4l2_pix_format *pix, unsigned int *bpp) +{ + struct vpfe_subdev_info *sdinfo = vpfe->current_subdev; + unsigned int bus_width = sdinfo->vpfe_param.bus_width; + struct vpfe_fmt *fmt; + + memset(pix, 0, sizeof(*pix)); + pix->width = mbus->width; + pix->height = mbus->height; + + fmt = find_format_by_code(mbus->code, false); + if (WARN_ON(fmt == NULL)) { + pr_err("Invalid mbus code set\n"); + *bpp = 1; + return; + } + + pix->colorspace = mbus->colorspace; + pix->field = mbus->field; + pix->pixelformat = fmt->fourcc; + *bpp = (bus_width == 10) ? fmt->l.bpp : fmt->s.bpp; + + pix->bytesperline = pix->width * *bpp; + /* pitch should be 32 bytes aligned */ + pix->bytesperline = ALIGN(pix->bytesperline, 32); + pix->sizeimage = pix->bytesperline * pix->height; +} + +static int +pix_to_mbus(struct vpfe_device *vpfe, + struct v4l2_pix_format *pix, + struct v4l2_mbus_framefmt *mbus) +{ + struct vpfe_fmt *fmt; + + memset(mbus, 0, sizeof(*mbus)); + mbus->width = pix->width; + mbus->height = pix->height; + + fmt = find_format_by_pix(pix->pixelformat); + if (!fmt) { + /* default to first entry */ + vpfe_dbg(3, vpfe, "Invalid pixel code: %x, default used instead\n", + pix->pixelformat); + fmt = &formats[0]; + } + + mbus->code = fmt->code; + mbus->colorspace = pix->colorspace; + mbus->field = pix->field; + + return 0; +} + +/* Print Four-character-code (FOURCC) */ +static char *print_fourcc(u32 fmt) +{ + static char code[5]; + + code[0] = (unsigned char)(fmt & 0xff); + code[1] = (unsigned char)((fmt >> 8) & 0xff); + code[2] = (unsigned char)((fmt >> 16) & 0xff); + code[3] = (unsigned char)((fmt >> 24) & 0xff); + code[4] = '\0'; + + return code; +} + +static int +cmp_v4l2_format(const struct v4l2_format *lhs, const struct v4l2_format *rhs) +{ + return lhs->type == rhs->type && + lhs->fmt.pix.width == rhs->fmt.pix.width && + lhs->fmt.pix.height == rhs->fmt.pix.height && + lhs->fmt.pix.pixelformat == rhs->fmt.pix.pixelformat && + lhs->fmt.pix.field == rhs->fmt.pix.field && + lhs->fmt.pix.colorspace == rhs->fmt.pix.colorspace; +} + +static inline u32 vpfe_reg_read(struct vpfe_ccdc *ccdc, u32 offset) +{ + return ioread32(ccdc->ccdc_cfg.base_addr + offset); +} + +static inline void vpfe_reg_write(struct vpfe_ccdc *ccdc, u32 val, u32 offset) +{ + iowrite32(val, ccdc->ccdc_cfg.base_addr + offset); +} + +static inline struct vpfe_device *to_vpfe(struct vpfe_ccdc *ccdc) +{ + return container_of(ccdc, struct vpfe_device, ccdc); +} + +static inline struct vpfe_cap_buffer *to_vpfe_buffer(struct vb2_buffer *vb) +{ + return container_of(vb, struct vpfe_cap_buffer, vb); +} + +static inline void vpfe_pcr_enable(struct vpfe_ccdc *ccdc, int flag) +{ + vpfe_reg_write(ccdc, !!flag, VPFE_PCR); +} + +static void vpfe_config_enable(struct vpfe_ccdc *ccdc, int flag) +{ + unsigned int cfg; + + if (!flag) { + cfg = vpfe_reg_read(ccdc, VPFE_CONFIG); + cfg &= ~(VPFE_CONFIG_EN_ENABLE << VPFE_CONFIG_EN_SHIFT); + } else { + cfg = VPFE_CONFIG_EN_ENABLE << VPFE_CONFIG_EN_SHIFT; + } + + vpfe_reg_write(ccdc, cfg, VPFE_CONFIG); +} + +static void vpfe_ccdc_setwin(struct vpfe_ccdc *ccdc, + struct v4l2_rect *image_win, + enum ccdc_frmfmt frm_fmt, + int bpp) +{ + int horz_start, horz_nr_pixels; + int vert_start, vert_nr_lines; + int val, mid_img; + + /* + * ppc - per pixel count. indicates how many pixels per cell + * output to SDRAM. example, for ycbcr, it is one y and one c, so 2. + * raw capture this is 1 + */ + horz_start = image_win->left * bpp; + horz_nr_pixels = (image_win->width * bpp) - 1; + vpfe_reg_write(ccdc, (horz_start << VPFE_HORZ_INFO_SPH_SHIFT) | + horz_nr_pixels, VPFE_HORZ_INFO); + + vert_start = image_win->top; + + if (frm_fmt == CCDC_FRMFMT_INTERLACED) { + vert_nr_lines = (image_win->height >> 1) - 1; + vert_start >>= 1; + /* Since first line doesn't have any data */ + vert_start += 1; + /* configure VDINT0 */ + val = (vert_start << VPFE_VDINT_VDINT0_SHIFT); + } else { + /* Since first line doesn't have any data */ + vert_start += 1; + vert_nr_lines = image_win->height - 1; + /* + * configure VDINT0 and VDINT1. VDINT1 will be at half + * of image height + */ + mid_img = vert_start + (image_win->height / 2); + val = (vert_start << VPFE_VDINT_VDINT0_SHIFT) | + (mid_img & VPFE_VDINT_VDINT1_MASK); + } + + vpfe_reg_write(ccdc, val, VPFE_VDINT); + + vpfe_reg_write(ccdc, (vert_start << VPFE_VERT_START_SLV0_SHIFT) | + vert_start, VPFE_VERT_START); + vpfe_reg_write(ccdc, vert_nr_lines, VPFE_VERT_LINES); +} + +static void vpfe_reg_dump(struct vpfe_ccdc *ccdc) +{ + struct vpfe_device *vpfe = to_vpfe(ccdc); + + vpfe_dbg(3, vpfe, "ALAW: 0x%x\n", vpfe_reg_read(ccdc, VPFE_ALAW)); + vpfe_dbg(3, vpfe, "CLAMP: 0x%x\n", vpfe_reg_read(ccdc, VPFE_CLAMP)); + vpfe_dbg(3, vpfe, "DCSUB: 0x%x\n", vpfe_reg_read(ccdc, VPFE_DCSUB)); + vpfe_dbg(3, vpfe, "BLKCMP: 0x%x\n", vpfe_reg_read(ccdc, VPFE_BLKCMP)); + vpfe_dbg(3, vpfe, "COLPTN: 0x%x\n", vpfe_reg_read(ccdc, VPFE_COLPTN)); + vpfe_dbg(3, vpfe, "SDOFST: 0x%x\n", vpfe_reg_read(ccdc, VPFE_SDOFST)); + vpfe_dbg(3, vpfe, "SYN_MODE: 0x%x\n", + vpfe_reg_read(ccdc, VPFE_SYNMODE)); + vpfe_dbg(3, vpfe, "HSIZE_OFF: 0x%x\n", + vpfe_reg_read(ccdc, VPFE_HSIZE_OFF)); + vpfe_dbg(3, vpfe, "HORZ_INFO: 0x%x\n", + vpfe_reg_read(ccdc, VPFE_HORZ_INFO)); + vpfe_dbg(3, vpfe, "VERT_START: 0x%x\n", + vpfe_reg_read(ccdc, VPFE_VERT_START)); + vpfe_dbg(3, vpfe, "VERT_LINES: 0x%x\n", + vpfe_reg_read(ccdc, VPFE_VERT_LINES)); +} + +static int +vpfe_ccdc_validate_param(struct vpfe_ccdc *ccdc, + struct vpfe_ccdc_config_params_raw *ccdcparam) +{ + struct vpfe_device *vpfe = to_vpfe(ccdc); + u8 max_gamma, max_data; + + if (!ccdcparam->alaw.enable) + return 0; + + max_gamma = ccdc_gamma_width_max_bit(ccdcparam->alaw.gamma_wd); + max_data = ccdc_data_size_max_bit(ccdcparam->data_sz); + + if (ccdcparam->alaw.gamma_wd > VPFE_CCDC_GAMMA_BITS_09_0 || + ccdcparam->alaw.gamma_wd < VPFE_CCDC_GAMMA_BITS_15_6 || + max_gamma > max_data) { + vpfe_dbg(1, vpfe, "Invalid data line select\n"); + return -EINVAL; + } + + return 0; +} + +static void +vpfe_ccdc_update_raw_params(struct vpfe_ccdc *ccdc, + struct vpfe_ccdc_config_params_raw *raw_params) +{ + struct vpfe_ccdc_config_params_raw *config_params = + &ccdc->ccdc_cfg.bayer.config_params; + + config_params = raw_params; +} + +/* + * vpfe_ccdc_restore_defaults() + * This function will write defaults to all CCDC registers + */ +static void vpfe_ccdc_restore_defaults(struct vpfe_ccdc *ccdc) +{ + int i; + + /* Disable CCDC */ + vpfe_pcr_enable(ccdc, 0); + + /* set all registers to default value */ + for (i = 4; i <= 0x94; i += 4) + vpfe_reg_write(ccdc, 0, i); + + vpfe_reg_write(ccdc, VPFE_NO_CULLING, VPFE_CULLING); + vpfe_reg_write(ccdc, VPFE_CCDC_GAMMA_BITS_11_2, VPFE_ALAW); +} + +static int vpfe_ccdc_close(struct vpfe_ccdc *ccdc, struct device *dev) +{ + int dma_cntl, i, pcr; + + /* If the CCDC module is still busy wait for it to be done */ + for (i = 0; i < 10; i++) { + usleep_range(5000, 6000); + pcr = vpfe_reg_read(ccdc, VPFE_PCR); + if (!pcr) + break; + + /* make sure it it is disabled */ + vpfe_pcr_enable(ccdc, 0); + } + + /* Disable CCDC by resetting all register to default POR values */ + vpfe_ccdc_restore_defaults(ccdc); + + /* if DMA_CNTL overflow bit is set. Clear it + * It appears to take a while for this to become quiescent ~20ms + */ + for (i = 0; i < 10; i++) { + dma_cntl = vpfe_reg_read(ccdc, VPFE_DMA_CNTL); + if (!(dma_cntl & VPFE_DMA_CNTL_OVERFLOW)) + break; + + /* Clear the overflow bit */ + vpfe_reg_write(ccdc, dma_cntl, VPFE_DMA_CNTL); + usleep_range(5000, 6000); + } + + /* Disabled the module at the CONFIG level */ + vpfe_config_enable(ccdc, 0); + + pm_runtime_put_sync(dev); + + return 0; +} + +static int vpfe_ccdc_set_params(struct vpfe_ccdc *ccdc, void __user *params) +{ + struct vpfe_device *vpfe = container_of(ccdc, struct vpfe_device, ccdc); + struct vpfe_ccdc_config_params_raw raw_params; + int x; + + if (ccdc->ccdc_cfg.if_type != VPFE_RAW_BAYER) + return -EINVAL; + + x = copy_from_user(&raw_params, params, sizeof(raw_params)); + if (x) { + vpfe_dbg(1, vpfe, + "vpfe_ccdc_set_params: error in copying ccdc params, %d\n", + x); + return -EFAULT; + } + + if (!vpfe_ccdc_validate_param(ccdc, &raw_params)) { + vpfe_ccdc_update_raw_params(ccdc, &raw_params); + return 0; + } + + return -EINVAL; +} + +/* + * vpfe_ccdc_config_ycbcr() + * This function will configure CCDC for YCbCr video capture + */ +static void vpfe_ccdc_config_ycbcr(struct vpfe_ccdc *ccdc) +{ + struct vpfe_device *vpfe = container_of(ccdc, struct vpfe_device, ccdc); + struct ccdc_params_ycbcr *params = &ccdc->ccdc_cfg.ycbcr; + u32 syn_mode; + + vpfe_dbg(3, vpfe, "vpfe_ccdc_config_ycbcr:\n"); + /* + * first restore the CCDC registers to default values + * This is important since we assume default values to be set in + * a lot of registers that we didn't touch + */ + vpfe_ccdc_restore_defaults(ccdc); + + /* + * configure pixel format, frame format, configure video frame + * format, enable output to SDRAM, enable internal timing generator + * and 8bit pack mode + */ + syn_mode = (((params->pix_fmt & VPFE_SYN_MODE_INPMOD_MASK) << + VPFE_SYN_MODE_INPMOD_SHIFT) | + ((params->frm_fmt & VPFE_SYN_FLDMODE_MASK) << + VPFE_SYN_FLDMODE_SHIFT) | VPFE_VDHDEN_ENABLE | + VPFE_WEN_ENABLE | VPFE_DATA_PACK_ENABLE); + + /* setup BT.656 sync mode */ + if (params->bt656_enable) { + vpfe_reg_write(ccdc, VPFE_REC656IF_BT656_EN, VPFE_REC656IF); + + /* + * configure the FID, VD, HD pin polarity, + * fld,hd pol positive, vd negative, 8-bit data + */ + syn_mode |= VPFE_SYN_MODE_VD_POL_NEGATIVE; + if (ccdc->ccdc_cfg.if_type == VPFE_BT656_10BIT) + syn_mode |= VPFE_SYN_MODE_10BITS; + else + syn_mode |= VPFE_SYN_MODE_8BITS; + } else { + /* y/c external sync mode */ + syn_mode |= (((params->fid_pol & VPFE_FID_POL_MASK) << + VPFE_FID_POL_SHIFT) | + ((params->hd_pol & VPFE_HD_POL_MASK) << + VPFE_HD_POL_SHIFT) | + ((params->vd_pol & VPFE_VD_POL_MASK) << + VPFE_VD_POL_SHIFT)); + } + vpfe_reg_write(ccdc, syn_mode, VPFE_SYNMODE); + + /* configure video window */ + vpfe_ccdc_setwin(ccdc, ¶ms->win, + params->frm_fmt, params->bytesperpixel); + + /* + * configure the order of y cb cr in SDRAM, and disable latch + * internal register on vsync + */ + if (ccdc->ccdc_cfg.if_type == VPFE_BT656_10BIT) + vpfe_reg_write(ccdc, + (params->pix_order << VPFE_CCDCFG_Y8POS_SHIFT) | + VPFE_LATCH_ON_VSYNC_DISABLE | + VPFE_CCDCFG_BW656_10BIT, VPFE_CCDCFG); + else + vpfe_reg_write(ccdc, + (params->pix_order << VPFE_CCDCFG_Y8POS_SHIFT) | + VPFE_LATCH_ON_VSYNC_DISABLE, VPFE_CCDCFG); + + /* + * configure the horizontal line offset. This should be a + * on 32 byte boundary. So clear LSB 5 bits + */ + vpfe_reg_write(ccdc, params->bytesperline, VPFE_HSIZE_OFF); + + /* configure the memory line offset */ + if (params->buf_type == CCDC_BUFTYPE_FLD_INTERLEAVED) + /* two fields are interleaved in memory */ + vpfe_reg_write(ccdc, VPFE_SDOFST_FIELD_INTERLEAVED, + VPFE_SDOFST); +} + +static void +vpfe_ccdc_config_black_clamp(struct vpfe_ccdc *ccdc, + struct vpfe_ccdc_black_clamp *bclamp) +{ + u32 val; + + if (!bclamp->enable) { + /* configure DCSub */ + val = (bclamp->dc_sub) & VPFE_BLK_DC_SUB_MASK; + vpfe_reg_write(ccdc, val, VPFE_DCSUB); + vpfe_reg_write(ccdc, VPFE_CLAMP_DEFAULT_VAL, VPFE_CLAMP); + return; + } + /* + * Configure gain, Start pixel, No of line to be avg, + * No of pixel/line to be avg, & Enable the Black clamping + */ + val = ((bclamp->sgain & VPFE_BLK_SGAIN_MASK) | + ((bclamp->start_pixel & VPFE_BLK_ST_PXL_MASK) << + VPFE_BLK_ST_PXL_SHIFT) | + ((bclamp->sample_ln & VPFE_BLK_SAMPLE_LINE_MASK) << + VPFE_BLK_SAMPLE_LINE_SHIFT) | + ((bclamp->sample_pixel & VPFE_BLK_SAMPLE_LN_MASK) << + VPFE_BLK_SAMPLE_LN_SHIFT) | VPFE_BLK_CLAMP_ENABLE); + vpfe_reg_write(ccdc, val, VPFE_CLAMP); + /* If Black clamping is enable then make dcsub 0 */ + vpfe_reg_write(ccdc, VPFE_DCSUB_DEFAULT_VAL, VPFE_DCSUB); +} + +static void +vpfe_ccdc_config_black_compense(struct vpfe_ccdc *ccdc, + struct vpfe_ccdc_black_compensation *bcomp) +{ + u32 val; + + val = ((bcomp->b & VPFE_BLK_COMP_MASK) | + ((bcomp->gb & VPFE_BLK_COMP_MASK) << + VPFE_BLK_COMP_GB_COMP_SHIFT) | + ((bcomp->gr & VPFE_BLK_COMP_MASK) << + VPFE_BLK_COMP_GR_COMP_SHIFT) | + ((bcomp->r & VPFE_BLK_COMP_MASK) << + VPFE_BLK_COMP_R_COMP_SHIFT)); + vpfe_reg_write(ccdc, val, VPFE_BLKCMP); +} + +/* + * vpfe_ccdc_config_raw() + * This function will configure CCDC for Raw capture mode + */ +static void vpfe_ccdc_config_raw(struct vpfe_ccdc *ccdc) +{ + struct vpfe_device *vpfe = container_of(ccdc, struct vpfe_device, ccdc); + struct vpfe_ccdc_config_params_raw *config_params = + &ccdc->ccdc_cfg.bayer.config_params; + struct ccdc_params_raw *params = &ccdc->ccdc_cfg.bayer; + unsigned int syn_mode; + unsigned int val; + + vpfe_dbg(3, vpfe, "vpfe_ccdc_config_raw:\n"); + + /* Reset CCDC */ + vpfe_ccdc_restore_defaults(ccdc); + + /* Disable latching function registers on VSYNC */ + vpfe_reg_write(ccdc, VPFE_LATCH_ON_VSYNC_DISABLE, VPFE_CCDCFG); + + /* + * Configure the vertical sync polarity(SYN_MODE.VDPOL), + * horizontal sync polarity (SYN_MODE.HDPOL), frame id polarity + * (SYN_MODE.FLDPOL), frame format(progressive or interlace), + * data size(SYNMODE.DATSIZ), &pixel format (Input mode), output + * SDRAM, enable internal timing generator + */ + syn_mode = (((params->vd_pol & VPFE_VD_POL_MASK) << VPFE_VD_POL_SHIFT) | + ((params->hd_pol & VPFE_HD_POL_MASK) << VPFE_HD_POL_SHIFT) | + ((params->fid_pol & VPFE_FID_POL_MASK) << + VPFE_FID_POL_SHIFT) | ((params->frm_fmt & + VPFE_FRM_FMT_MASK) << VPFE_FRM_FMT_SHIFT) | + ((config_params->data_sz & VPFE_DATA_SZ_MASK) << + VPFE_DATA_SZ_SHIFT) | ((params->pix_fmt & + VPFE_PIX_FMT_MASK) << VPFE_PIX_FMT_SHIFT) | + VPFE_WEN_ENABLE | VPFE_VDHDEN_ENABLE); + + /* Enable and configure aLaw register if needed */ + if (config_params->alaw.enable) { + val = ((config_params->alaw.gamma_wd & + VPFE_ALAW_GAMMA_WD_MASK) | VPFE_ALAW_ENABLE); + vpfe_reg_write(ccdc, val, VPFE_ALAW); + vpfe_dbg(3, vpfe, "\nWriting 0x%x to ALAW...\n", val); + } + + /* Configure video window */ + vpfe_ccdc_setwin(ccdc, ¶ms->win, params->frm_fmt, + params->bytesperpixel); + + /* Configure Black Clamp */ + vpfe_ccdc_config_black_clamp(ccdc, &config_params->blk_clamp); + + /* Configure Black level compensation */ + vpfe_ccdc_config_black_compense(ccdc, &config_params->blk_comp); + + /* If data size is 8 bit then pack the data */ + if ((config_params->data_sz == VPFE_CCDC_DATA_8BITS) || + config_params->alaw.enable) + syn_mode |= VPFE_DATA_PACK_ENABLE; + + /* + * Configure Horizontal offset register. If pack 8 is enabled then + * 1 pixel will take 1 byte + */ + vpfe_reg_write(ccdc, params->bytesperline, VPFE_HSIZE_OFF); + + vpfe_dbg(3, vpfe, "Writing %d (%x) to HSIZE_OFF\n", + params->bytesperline, params->bytesperline); + + /* Set value for SDOFST */ + if (params->frm_fmt == CCDC_FRMFMT_INTERLACED) { + if (params->image_invert_enable) { + /* For interlace inverse mode */ + vpfe_reg_write(ccdc, VPFE_INTERLACED_IMAGE_INVERT, + VPFE_SDOFST); + } else { + /* For interlace non inverse mode */ + vpfe_reg_write(ccdc, VPFE_INTERLACED_NO_IMAGE_INVERT, + VPFE_SDOFST); + } + } else if (params->frm_fmt == CCDC_FRMFMT_PROGRESSIVE) { + vpfe_reg_write(ccdc, VPFE_PROGRESSIVE_NO_IMAGE_INVERT, + VPFE_SDOFST); + } + + vpfe_reg_write(ccdc, syn_mode, VPFE_SYNMODE); + + vpfe_reg_dump(ccdc); +} + +static inline int +vpfe_ccdc_set_buftype(struct vpfe_ccdc *ccdc, + enum ccdc_buftype buf_type) +{ + if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) + ccdc->ccdc_cfg.bayer.buf_type = buf_type; + else + ccdc->ccdc_cfg.ycbcr.buf_type = buf_type; + + return 0; +} + +static inline enum ccdc_buftype vpfe_ccdc_get_buftype(struct vpfe_ccdc *ccdc) +{ + if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) + return ccdc->ccdc_cfg.bayer.buf_type; + + return ccdc->ccdc_cfg.ycbcr.buf_type; +} + +static int vpfe_ccdc_set_pixel_format(struct vpfe_ccdc *ccdc, u32 pixfmt) +{ + struct vpfe_device *vpfe = container_of(ccdc, struct vpfe_device, ccdc); + + vpfe_dbg(1, vpfe, "vpfe_ccdc_set_pixel_format: if_type: %d, pixfmt:%s\n", + ccdc->ccdc_cfg.if_type, print_fourcc(pixfmt)); + + if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) { + ccdc->ccdc_cfg.bayer.pix_fmt = CCDC_PIXFMT_RAW; + /* + * Need to clear it in case it was left on + * after the last capture. + */ + ccdc->ccdc_cfg.bayer.config_params.alaw.enable = 0; + + switch (pixfmt) { + case V4L2_PIX_FMT_SBGGR8: + ccdc->ccdc_cfg.bayer.config_params.alaw.enable = 1; + break; + + case V4L2_PIX_FMT_YUYV: + case V4L2_PIX_FMT_UYVY: + case V4L2_PIX_FMT_YUV420: + case V4L2_PIX_FMT_NV12: + case V4L2_PIX_FMT_RGB565X: + break; + + case V4L2_PIX_FMT_SBGGR16: + default: + return -EINVAL; + } + } else { + switch (pixfmt) { + case V4L2_PIX_FMT_YUYV: + ccdc->ccdc_cfg.ycbcr.pix_order = CCDC_PIXORDER_YCBYCR; + break; + + case V4L2_PIX_FMT_UYVY: + ccdc->ccdc_cfg.ycbcr.pix_order = CCDC_PIXORDER_CBYCRY; + break; + + default: + return -EINVAL; + } + } + + return 0; +} + +static u32 vpfe_ccdc_get_pixel_format(struct vpfe_ccdc *ccdc) +{ + u32 pixfmt; + + if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) { + pixfmt = V4L2_PIX_FMT_YUYV; + } else { + if (ccdc->ccdc_cfg.ycbcr.pix_order == CCDC_PIXORDER_YCBYCR) + pixfmt = V4L2_PIX_FMT_YUYV; + else + pixfmt = V4L2_PIX_FMT_UYVY; + } + + return pixfmt; +} + +static int +vpfe_ccdc_set_image_window(struct vpfe_ccdc *ccdc, + struct v4l2_rect *win, unsigned int bpp) +{ + if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) { + ccdc->ccdc_cfg.bayer.win = *win; + ccdc->ccdc_cfg.bayer.bytesperpixel = bpp; + ccdc->ccdc_cfg.bayer.bytesperline = ALIGN(win->width * bpp, 32); + } else { + ccdc->ccdc_cfg.ycbcr.win = *win; + ccdc->ccdc_cfg.ycbcr.bytesperpixel = bpp; + ccdc->ccdc_cfg.ycbcr.bytesperline = ALIGN(win->width * bpp, 32); + } + + return 0; +} + +static inline void +vpfe_ccdc_get_image_window(struct vpfe_ccdc *ccdc, + struct v4l2_rect *win) +{ + if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) + *win = ccdc->ccdc_cfg.bayer.win; + else + *win = ccdc->ccdc_cfg.ycbcr.win; +} + +static inline unsigned int vpfe_ccdc_get_line_length(struct vpfe_ccdc *ccdc) +{ + if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) + return ccdc->ccdc_cfg.bayer.bytesperline; + + return ccdc->ccdc_cfg.ycbcr.bytesperline; +} + +static inline int +vpfe_ccdc_set_frame_format(struct vpfe_ccdc *ccdc, + enum ccdc_frmfmt frm_fmt) +{ + if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) + ccdc->ccdc_cfg.bayer.frm_fmt = frm_fmt; + else + ccdc->ccdc_cfg.ycbcr.frm_fmt = frm_fmt; + + return 0; +} + +static inline enum ccdc_frmfmt +vpfe_ccdc_get_frame_format(struct vpfe_ccdc *ccdc) +{ + if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) + return ccdc->ccdc_cfg.bayer.frm_fmt; + + return ccdc->ccdc_cfg.ycbcr.frm_fmt; +} + +static inline int vpfe_ccdc_getfid(struct vpfe_ccdc *ccdc) +{ + return (vpfe_reg_read(ccdc, VPFE_SYNMODE) >> 15) & 1; +} + +static inline void vpfe_set_sdr_addr(struct vpfe_ccdc *ccdc, unsigned long addr) +{ + vpfe_reg_write(ccdc, addr & 0xffffffe0, VPFE_SDR_ADDR); +} + +static int vpfe_ccdc_set_hw_if_params(struct vpfe_ccdc *ccdc, + struct vpfe_hw_if_param *params) +{ + struct vpfe_device *vpfe = container_of(ccdc, struct vpfe_device, ccdc); + + ccdc->ccdc_cfg.if_type = params->if_type; + + switch (params->if_type) { + case VPFE_BT656: + case VPFE_YCBCR_SYNC_16: + case VPFE_YCBCR_SYNC_8: + case VPFE_BT656_10BIT: + ccdc->ccdc_cfg.ycbcr.vd_pol = params->vdpol; + ccdc->ccdc_cfg.ycbcr.hd_pol = params->hdpol; + break; + + case VPFE_RAW_BAYER: + ccdc->ccdc_cfg.bayer.vd_pol = params->vdpol; + ccdc->ccdc_cfg.bayer.hd_pol = params->hdpol; + if (params->bus_width == 10) + ccdc->ccdc_cfg.bayer.config_params.data_sz = + VPFE_CCDC_DATA_10BITS; + else + ccdc->ccdc_cfg.bayer.config_params.data_sz = + VPFE_CCDC_DATA_8BITS; + vpfe_dbg(1, vpfe, "params.bus_width: %d\n", + params->bus_width); + vpfe_dbg(1, vpfe, "config_params.data_sz: %d\n", + ccdc->ccdc_cfg.bayer.config_params.data_sz); + break; + + default: + return -EINVAL; + } + + return 0; +} + +static void vpfe_clear_intr(struct vpfe_ccdc *ccdc, int vdint) +{ + unsigned int vpfe_int_status; + + vpfe_int_status = vpfe_reg_read(ccdc, VPFE_IRQ_STS); + + switch (vdint) { + /* VD0 interrupt */ + case VPFE_VDINT0: + vpfe_int_status &= ~VPFE_VDINT0; + vpfe_int_status |= VPFE_VDINT0; + break; + + /* VD1 interrupt */ + case VPFE_VDINT1: + vpfe_int_status &= ~VPFE_VDINT1; + vpfe_int_status |= VPFE_VDINT1; + break; + + /* VD2 interrupt */ + case VPFE_VDINT2: + vpfe_int_status &= ~VPFE_VDINT2; + vpfe_int_status |= VPFE_VDINT2; + break; + + /* Clear all interrupts */ + default: + vpfe_int_status &= ~(VPFE_VDINT0 | + VPFE_VDINT1 | + VPFE_VDINT2); + vpfe_int_status |= (VPFE_VDINT0 | + VPFE_VDINT1 | + VPFE_VDINT2); + break; + } + /* Clear specific VDINT from the status register */ + vpfe_reg_write(ccdc, vpfe_int_status, VPFE_IRQ_STS); + + vpfe_int_status = vpfe_reg_read(ccdc, VPFE_IRQ_STS); + + /* Acknowledge that we are done with all interrupts */ + vpfe_reg_write(ccdc, 1, VPFE_IRQ_EOI); +} + +static void vpfe_ccdc_config_defaults(struct vpfe_ccdc *ccdc) +{ + ccdc->ccdc_cfg.if_type = VPFE_RAW_BAYER; + + ccdc->ccdc_cfg.ycbcr.pix_fmt = CCDC_PIXFMT_YCBCR_8BIT; + ccdc->ccdc_cfg.ycbcr.frm_fmt = CCDC_FRMFMT_INTERLACED; + ccdc->ccdc_cfg.ycbcr.fid_pol = VPFE_PINPOL_POSITIVE; + ccdc->ccdc_cfg.ycbcr.vd_pol = VPFE_PINPOL_POSITIVE; + ccdc->ccdc_cfg.ycbcr.hd_pol = VPFE_PINPOL_POSITIVE; + ccdc->ccdc_cfg.ycbcr.pix_order = CCDC_PIXORDER_CBYCRY; + ccdc->ccdc_cfg.ycbcr.buf_type = CCDC_BUFTYPE_FLD_INTERLEAVED; + + ccdc->ccdc_cfg.ycbcr.win.left = 0; + ccdc->ccdc_cfg.ycbcr.win.top = 0; + ccdc->ccdc_cfg.ycbcr.win.width = 720; + ccdc->ccdc_cfg.ycbcr.win.height = 576; + ccdc->ccdc_cfg.ycbcr.bt656_enable = 1; + + ccdc->ccdc_cfg.bayer.pix_fmt = CCDC_PIXFMT_RAW; + ccdc->ccdc_cfg.bayer.frm_fmt = CCDC_FRMFMT_PROGRESSIVE; + ccdc->ccdc_cfg.bayer.fid_pol = VPFE_PINPOL_POSITIVE; + ccdc->ccdc_cfg.bayer.vd_pol = VPFE_PINPOL_POSITIVE; + ccdc->ccdc_cfg.bayer.hd_pol = VPFE_PINPOL_POSITIVE; + + ccdc->ccdc_cfg.bayer.win.left = 0; + ccdc->ccdc_cfg.bayer.win.top = 0; + ccdc->ccdc_cfg.bayer.win.width = 800; + ccdc->ccdc_cfg.bayer.win.height = 600; + ccdc->ccdc_cfg.bayer.config_params.data_sz = VPFE_CCDC_DATA_8BITS; + ccdc->ccdc_cfg.bayer.config_params.alaw.gamma_wd = + VPFE_CCDC_GAMMA_BITS_09_0; +} + +/* + * vpfe_get_ccdc_image_format - Get image parameters based on CCDC settings + */ +static int vpfe_get_ccdc_image_format(struct vpfe_device *vpfe, + struct v4l2_format *f) +{ + struct v4l2_rect image_win; + enum ccdc_buftype buf_type; + enum ccdc_frmfmt frm_fmt; + + memset(f, 0, sizeof(*f)); + f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + vpfe_ccdc_get_image_window(&vpfe->ccdc, &image_win); + f->fmt.pix.width = image_win.width; + f->fmt.pix.height = image_win.height; + f->fmt.pix.bytesperline = vpfe_ccdc_get_line_length(&vpfe->ccdc); + f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * + f->fmt.pix.height; + buf_type = vpfe_ccdc_get_buftype(&vpfe->ccdc); + f->fmt.pix.pixelformat = vpfe_ccdc_get_pixel_format(&vpfe->ccdc); + frm_fmt = vpfe_ccdc_get_frame_format(&vpfe->ccdc); + + if (frm_fmt == CCDC_FRMFMT_PROGRESSIVE) { + f->fmt.pix.field = V4L2_FIELD_NONE; + } else if (frm_fmt == CCDC_FRMFMT_INTERLACED) { + if (buf_type == CCDC_BUFTYPE_FLD_INTERLEAVED) { + f->fmt.pix.field = V4L2_FIELD_INTERLACED; + } else if (buf_type == CCDC_BUFTYPE_FLD_SEPARATED) { + f->fmt.pix.field = V4L2_FIELD_SEQ_TB; + } else { + vpfe_err(vpfe, "Invalid buf_type\n"); + return -EINVAL; + } + } else { + vpfe_err(vpfe, "Invalid frm_fmt\n"); + return -EINVAL; + } + return 0; +} + +static int vpfe_config_ccdc_image_format(struct vpfe_device *vpfe) +{ + enum ccdc_frmfmt frm_fmt = CCDC_FRMFMT_INTERLACED; + int ret; + + vpfe_dbg(2, vpfe, "vpfe_config_ccdc_image_format\n"); + + vpfe_dbg(1, vpfe, "pixelformat: %s\n", + print_fourcc(vpfe->fmt.fmt.pix.pixelformat)); + + if (vpfe_ccdc_set_pixel_format(&vpfe->ccdc, + vpfe->fmt.fmt.pix.pixelformat) < 0) { + vpfe_err(vpfe, "couldn't set pix format in ccdc\n"); + return -EINVAL; + } + + /* configure the image window */ + vpfe_ccdc_set_image_window(&vpfe->ccdc, &vpfe->crop, vpfe->bpp); + + switch (vpfe->fmt.fmt.pix.field) { + case V4L2_FIELD_INTERLACED: + /* do nothing, since it is default */ + ret = vpfe_ccdc_set_buftype( + &vpfe->ccdc, + CCDC_BUFTYPE_FLD_INTERLEAVED); + break; + + case V4L2_FIELD_NONE: + frm_fmt = CCDC_FRMFMT_PROGRESSIVE; + /* buffer type only applicable for interlaced scan */ + break; + + case V4L2_FIELD_SEQ_TB: + ret = vpfe_ccdc_set_buftype( + &vpfe->ccdc, + CCDC_BUFTYPE_FLD_SEPARATED); + break; + + default: + return -EINVAL; + } + + if (ret) + return ret; + + return vpfe_ccdc_set_frame_format(&vpfe->ccdc, frm_fmt); +} + +/* + * vpfe_config_image_format() + * For a given standard, this functions sets up the default + * pix format & crop values in the vpfe device and ccdc. It first + * starts with defaults based values from the standard table. + * It then checks if sub device support g_mbus_fmt and then override the + * values based on that.Sets crop values to match with scan resolution + * starting at 0,0. It calls vpfe_config_ccdc_image_format() set the + * values in ccdc + */ +static int vpfe_config_image_format(struct vpfe_device *vpfe, + v4l2_std_id std_id) +{ + struct v4l2_pix_format *pix = &vpfe->fmt.fmt.pix; + int i, ret; + + for (i = 0; i < ARRAY_SIZE(vpfe_standards); i++) { + if (vpfe_standards[i].std_id & std_id) { + vpfe->std_info.active_pixels = + vpfe_standards[i].width; + vpfe->std_info.active_lines = + vpfe_standards[i].height; + vpfe->std_info.frame_format = + vpfe_standards[i].frame_format; + vpfe->std_index = i; + + break; + } + } + + if (i == ARRAY_SIZE(vpfe_standards)) { + vpfe_err(vpfe, "standard not supported\n"); + return -EINVAL; + } + + vpfe->crop.top = vpfe->crop.left = 0; + vpfe->crop.width = vpfe->std_info.active_pixels; + vpfe->crop.height = vpfe->std_info.active_lines; + pix->width = vpfe->crop.width; + pix->height = vpfe->crop.height; + pix->pixelformat = V4L2_PIX_FMT_YUYV; + + /* first field and frame format based on standard frame format */ + if (vpfe->std_info.frame_format) + pix->field = V4L2_FIELD_INTERLACED; + else + pix->field = V4L2_FIELD_NONE; + + ret = __vpfe_get_format(vpfe, &vpfe->fmt, &vpfe->bpp); + if (ret) + return ret; + + /* Update the crop window based on found values */ + vpfe->crop.width = pix->width; + vpfe->crop.height = pix->height; + + return vpfe_config_ccdc_image_format(vpfe); +} + +static int vpfe_initialize_device(struct vpfe_device *vpfe) +{ + struct vpfe_subdev_info *sdinfo; + int ret; + + sdinfo = &vpfe->cfg->sub_devs[0]; + sdinfo->sd = vpfe->sd[0]; + vpfe->current_input = 0; + vpfe->std_index = 0; + /* Configure the default format information */ + ret = vpfe_config_image_format(vpfe, + vpfe_standards[vpfe->std_index].std_id); + if (ret) + return ret; + + pm_runtime_get_sync(vpfe->pdev); + + vpfe_config_enable(&vpfe->ccdc, 1); + + vpfe_ccdc_restore_defaults(&vpfe->ccdc); + + /* Clear all VPFE interrupts */ + vpfe_clear_intr(&vpfe->ccdc, -1); + + return ret; +} + +/* + * vpfe_release : This function is based on the vb2_fop_release + * helper function. + * It has been augmented to handle module power management, + * by disabling/enabling h/w module fcntl clock when necessary. + */ +static int vpfe_release(struct file *file) +{ + struct vpfe_device *vpfe = video_drvdata(file); + int ret; + + vpfe_dbg(2, vpfe, "vpfe_release\n"); + + ret = _vb2_fop_release(file, NULL); + + if (v4l2_fh_is_singular_file(file)) { + mutex_lock(&vpfe->lock); + vpfe_ccdc_close(&vpfe->ccdc, vpfe->pdev); + v4l2_fh_release(file); + mutex_unlock(&vpfe->lock); + } + + return ret; +} + +/* + * vpfe_open : This function is based on the v4l2_fh_open helper function. + * It has been augmented to handle module power management, + * by disabling/enabling h/w module fcntl clock when necessary. + */ + +static int vpfe_open(struct file *file) +{ + struct vpfe_device *vpfe = video_drvdata(file); + int ret; + + ret = v4l2_fh_open(file); + if (ret) { + vpfe_err(vpfe, "v4l2_fh_open failed\n"); + return ret; + } + + if (!v4l2_fh_is_singular_file(file)) + return 0; + + mutex_lock(&vpfe->lock); + if (vpfe_initialize_device(vpfe)) { + mutex_unlock(&vpfe->lock); + v4l2_fh_release(file); + return -ENODEV; + } + mutex_unlock(&vpfe->lock); + + return 0; +} + +/** + * vpfe_schedule_next_buffer: set next buffer address for capture + * @vpfe : ptr to vpfe device + * + * This function will get next buffer from the dma queue and + * set the buffer address in the vpfe register for capture. + * the buffer is marked active + * + * Assumes caller is holding vpfe->dma_queue_lock already + */ +static inline void vpfe_schedule_next_buffer(struct vpfe_device *vpfe) +{ + vpfe->next_frm = list_entry(vpfe->dma_queue.next, + struct vpfe_cap_buffer, list); + list_del(&vpfe->next_frm->list); + + vpfe_set_sdr_addr(&vpfe->ccdc, + vb2_dma_contig_plane_dma_addr(&vpfe->next_frm->vb, 0)); +} + +static inline void vpfe_schedule_bottom_field(struct vpfe_device *vpfe) +{ + unsigned long addr; + + addr = vb2_dma_contig_plane_dma_addr(&vpfe->next_frm->vb, 0) + + vpfe->field_off; + + vpfe_set_sdr_addr(&vpfe->ccdc, addr); +} + +/* + * vpfe_process_buffer_complete: process a completed buffer + * @vpfe : ptr to vpfe device + * + * This function time stamp the buffer and mark it as DONE. It also + * wake up any process waiting on the QUEUE and set the next buffer + * as current + */ +static inline void vpfe_process_buffer_complete(struct vpfe_device *vpfe) +{ + v4l2_get_timestamp(&vpfe->cur_frm->vb.v4l2_buf.timestamp); + vpfe->cur_frm->vb.v4l2_buf.field = vpfe->fmt.fmt.pix.field; + vpfe->cur_frm->vb.v4l2_buf.sequence = vpfe->sequence++; + vb2_buffer_done(&vpfe->cur_frm->vb, VB2_BUF_STATE_DONE); + vpfe->cur_frm = vpfe->next_frm; +} + +/* + * vpfe_isr : ISR handler for vpfe capture (VINT0) + * @irq: irq number + * @dev_id: dev_id ptr + * + * It changes status of the captured buffer, takes next buffer from the queue + * and sets its address in VPFE registers + */ +static irqreturn_t vpfe_isr(int irq, void *dev) +{ + struct vpfe_device *vpfe = (struct vpfe_device *)dev; + enum v4l2_field field; + int intr_status; + int fid; + + intr_status = vpfe_reg_read(&vpfe->ccdc, VPFE_IRQ_STS); + + if (intr_status & VPFE_VDINT0) { + field = vpfe->fmt.fmt.pix.field; + + if (field == V4L2_FIELD_NONE) { + /* handle progressive frame capture */ + if (vpfe->cur_frm != vpfe->next_frm) + vpfe_process_buffer_complete(vpfe); + goto next_intr; + } + + /* interlaced or TB capture check which field + we are in hardware */ + fid = vpfe_ccdc_getfid(&vpfe->ccdc); + + /* switch the software maintained field id */ + vpfe->field ^= 1; + if (fid == vpfe->field) { + /* we are in-sync here,continue */ + if (fid == 0) { + /* + * One frame is just being captured. If the + * next frame is available, release the + * current frame and move on + */ + if (vpfe->cur_frm != vpfe->next_frm) + vpfe_process_buffer_complete(vpfe); + /* + * based on whether the two fields are stored + * interleave or separately in memory, + * reconfigure the CCDC memory address + */ + if (field == V4L2_FIELD_SEQ_TB) + vpfe_schedule_bottom_field(vpfe); + + goto next_intr; + } + /* + * if one field is just being captured configure + * the next frame get the next frame from the empty + * queue if no frame is available hold on to the + * current buffer + */ + spin_lock(&vpfe->dma_queue_lock); + if (!list_empty(&vpfe->dma_queue) && + vpfe->cur_frm == vpfe->next_frm) + vpfe_schedule_next_buffer(vpfe); + spin_unlock(&vpfe->dma_queue_lock); + } else if (fid == 0) { + /* + * out of sync. Recover from any hardware out-of-sync. + * May loose one frame + */ + vpfe->field = fid; + } + } + +next_intr: + if (intr_status & VPFE_VDINT1) { + spin_lock(&vpfe->dma_queue_lock); + if (vpfe->fmt.fmt.pix.field == V4L2_FIELD_NONE && + !list_empty(&vpfe->dma_queue) && + vpfe->cur_frm == vpfe->next_frm) + vpfe_schedule_next_buffer(vpfe); + spin_unlock(&vpfe->dma_queue_lock); + } + + vpfe_clear_intr(&vpfe->ccdc, intr_status); + + return IRQ_HANDLED; +} + +static inline void vpfe_detach_irq(struct vpfe_device *vpfe) +{ + unsigned int intr = VPFE_VDINT0; + enum ccdc_frmfmt frame_format; + + frame_format = vpfe_ccdc_get_frame_format(&vpfe->ccdc); + if (frame_format == CCDC_FRMFMT_PROGRESSIVE) + intr |= VPFE_VDINT1; + + vpfe_reg_write(&vpfe->ccdc, intr, VPFE_IRQ_EN_CLR); +} + +static inline void vpfe_attach_irq(struct vpfe_device *vpfe) +{ + unsigned int intr = VPFE_VDINT0; + enum ccdc_frmfmt frame_format; + + frame_format = vpfe_ccdc_get_frame_format(&vpfe->ccdc); + if (frame_format == CCDC_FRMFMT_PROGRESSIVE) + intr |= VPFE_VDINT1; + + vpfe_reg_write(&vpfe->ccdc, intr, VPFE_IRQ_EN_SET); +} + +static int vpfe_querycap(struct file *file, void *priv, + struct v4l2_capability *cap) +{ + struct vpfe_device *vpfe = video_drvdata(file); + + vpfe_dbg(2, vpfe, "vpfe_querycap\n"); + + strlcpy(cap->driver, VPFE_MODULE_NAME, sizeof(cap->driver)); + strlcpy(cap->card, "TI AM437x VPFE", sizeof(cap->card)); + snprintf(cap->bus_info, sizeof(cap->bus_info), + "platform:%s", vpfe->v4l2_dev.name); + cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING | + V4L2_CAP_READWRITE; + cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; + + return 0; +} + +/* get the format set at output pad of the adjacent subdev */ +static int __vpfe_get_format(struct vpfe_device *vpfe, + struct v4l2_format *format, unsigned int *bpp) +{ + struct v4l2_mbus_framefmt mbus_fmt; + struct vpfe_subdev_info *sdinfo; + struct v4l2_subdev_format fmt; + int ret; + + sdinfo = vpfe->current_subdev; + if (!sdinfo->sd) + return -EINVAL; + + fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; + fmt.pad = 0; + + ret = v4l2_subdev_call(sdinfo->sd, pad, get_fmt, NULL, &fmt); + if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) + return ret; + + if (!ret) { + v4l2_fill_pix_format(&format->fmt.pix, &fmt.format); + mbus_to_pix(vpfe, &fmt.format, &format->fmt.pix, bpp); + } else { + ret = v4l2_device_call_until_err(&vpfe->v4l2_dev, + sdinfo->grp_id, + video, g_mbus_fmt, + &mbus_fmt); + if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) + return ret; + v4l2_fill_pix_format(&format->fmt.pix, &mbus_fmt); + mbus_to_pix(vpfe, &mbus_fmt, &format->fmt.pix, bpp); + } + + format->type = vpfe->fmt.type; + + vpfe_dbg(1, vpfe, + "%s size %dx%d (%s) bytesperline= %d, size= %d, bpp= %d\n", + __func__, format->fmt.pix.width, format->fmt.pix.height, + print_fourcc(format->fmt.pix.pixelformat), + format->fmt.pix.bytesperline, format->fmt.pix.sizeimage, *bpp); + + return 0; +} + +/* set the format at output pad of the adjacent subdev */ +static int __vpfe_set_format(struct vpfe_device *vpfe, + struct v4l2_format *format, unsigned int *bpp) +{ + struct vpfe_subdev_info *sdinfo; + struct v4l2_subdev_format fmt; + int ret; + + vpfe_dbg(2, vpfe, "__vpfe_set_format\n"); + + sdinfo = vpfe->current_subdev; + if (!sdinfo->sd) + return -EINVAL; + + fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; + fmt.pad = 0; + + ret = pix_to_mbus(vpfe, &format->fmt.pix, &fmt.format); + if (ret) + return ret; + + ret = v4l2_subdev_call(sdinfo->sd, pad, set_fmt, NULL, &fmt); + if (ret == -ENOIOCTLCMD) + return -EINVAL; + + format->type = vpfe->fmt.type; + + /* convert mbus_format to v4l2_format */ + v4l2_fill_pix_format(&format->fmt.pix, &fmt.format); + mbus_to_pix(vpfe, &fmt.format, &format->fmt.pix, bpp); + vpfe_dbg(1, vpfe, "__vpfe_set_format size %dx%d (%s) bytesperline = %d, sizeimage = %d, bpp = %d\n", + format->fmt.pix.width, format->fmt.pix.height, + print_fourcc(format->fmt.pix.pixelformat), + format->fmt.pix.bytesperline, format->fmt.pix.sizeimage, *bpp); + + return 0; +} + +static int vpfe_g_fmt(struct file *file, void *priv, + struct v4l2_format *fmt) +{ + struct vpfe_device *vpfe = video_drvdata(file); + + vpfe_dbg(2, vpfe, "vpfe_g_fmt\n"); + + *fmt = vpfe->fmt; + + return 0; +} + +static int vpfe_enum_fmt(struct file *file, void *priv, + struct v4l2_fmtdesc *f) +{ + struct vpfe_device *vpfe = video_drvdata(file); + struct vpfe_subdev_info *sdinfo; + struct vpfe_fmt *fmt = NULL; + unsigned int k; + + vpfe_dbg(2, vpfe, "vpfe_enum_format index:%d\n", + f->index); + + sdinfo = vpfe->current_subdev; + if (!sdinfo->sd) + return -EINVAL; + + if (f->index > ARRAY_SIZE(formats)) + return -EINVAL; + + for (k = 0; k < ARRAY_SIZE(formats); k++) { + if (formats[k].index == f->index) { + fmt = &formats[k]; + break; + } + } + if (!fmt) + return -EINVAL; + + strncpy(f->description, fmt->name, sizeof(f->description) - 1); + f->pixelformat = fmt->fourcc; + f->type = vpfe->fmt.type; + + vpfe_dbg(1, vpfe, "vpfe_enum_format: mbus index: %d code: %x pixelformat: %s [%s]\n", + f->index, fmt->code, print_fourcc(fmt->fourcc), fmt->name); + + return 0; +} + +static int vpfe_try_fmt(struct file *file, void *priv, + struct v4l2_format *fmt) +{ + struct vpfe_device *vpfe = video_drvdata(file); + unsigned int bpp; + + vpfe_dbg(2, vpfe, "vpfe_try_fmt\n"); + + return __vpfe_get_format(vpfe, fmt, &bpp); +} + +static int vpfe_s_fmt(struct file *file, void *priv, + struct v4l2_format *fmt) +{ + struct vpfe_device *vpfe = video_drvdata(file); + struct v4l2_format format; + unsigned int bpp; + int ret; + + vpfe_dbg(2, vpfe, "vpfe_s_fmt\n"); + + /* If streaming is started, return error */ + if (vb2_is_busy(&vpfe->buffer_queue)) { + vpfe_err(vpfe, "%s device busy\n", __func__); + return -EBUSY; + } + + ret = vpfe_try_fmt(file, priv, fmt); + if (ret) + return ret; + + + if (!cmp_v4l2_format(fmt, &format)) { + /* Sensor format is different from the requested format + * so we need to change it + */ + ret = __vpfe_set_format(vpfe, fmt, &bpp); + if (ret) + return ret; + } else /* Just make sure all of the fields are consistent */ + *fmt = format; + + /* First detach any IRQ if currently attached */ + vpfe_detach_irq(vpfe); + vpfe->fmt = *fmt; + vpfe->bpp = bpp; + + /* Update the crop window based on found values */ + vpfe->crop.width = fmt->fmt.pix.width; + vpfe->crop.height = fmt->fmt.pix.height; + + /* set image capture parameters in the ccdc */ + return vpfe_config_ccdc_image_format(vpfe); +} + +static int vpfe_enum_size(struct file *file, void *priv, + struct v4l2_frmsizeenum *fsize) +{ + struct vpfe_device *vpfe = video_drvdata(file); + struct v4l2_subdev_frame_size_enum fse; + struct vpfe_subdev_info *sdinfo; + struct v4l2_mbus_framefmt mbus; + struct v4l2_pix_format pix; + struct vpfe_fmt *fmt; + int ret; + + vpfe_dbg(2, vpfe, "vpfe_enum_size\n"); + + /* check for valid format */ + fmt = find_format_by_pix(fsize->pixel_format); + if (!fmt) { + vpfe_dbg(3, vpfe, "Invalid pixel code: %x, default used instead\n", + fsize->pixel_format); + return -EINVAL; + } + + memset(fsize->reserved, 0x00, sizeof(fsize->reserved)); + + sdinfo = vpfe->current_subdev; + if (!sdinfo->sd) + return -EINVAL; + + /* Construct pix from parameter and use default for the rest */ + pix.pixelformat = fsize->pixel_format; + pix.width = 640; + pix.height = 480; + pix.colorspace = V4L2_COLORSPACE_SRGB; + pix.field = V4L2_FIELD_NONE; + ret = pix_to_mbus(vpfe, &pix, &mbus); + if (ret) + return ret; + + fse.index = fsize->index; + fse.pad = 0; + fse.code = mbus.code; + ret = v4l2_subdev_call(sdinfo->sd, pad, enum_frame_size, NULL, &fse); + if (ret) + return -EINVAL; + + vpfe_dbg(1, vpfe, "vpfe_enum_size: index: %d code: %x W:[%d,%d] H:[%d,%d]\n", + fse.index, fse.code, fse.min_width, fse.max_width, + fse.min_height, fse.max_height); + + fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE; + fsize->discrete.width = fse.max_width; + fsize->discrete.height = fse.max_height; + + vpfe_dbg(1, vpfe, "vpfe_enum_size: index: %d pixformat: %s size: %dx%d\n", + fsize->index, print_fourcc(fsize->pixel_format), + fsize->discrete.width, fsize->discrete.height); + + return 0; +} + +/* + * vpfe_get_subdev_input_index - Get subdev index and subdev input index for a + * given app input index + */ +static int +vpfe_get_subdev_input_index(struct vpfe_device *vpfe, + int *subdev_index, + int *subdev_input_index, + int app_input_index) +{ + struct vpfe_config *cfg = vpfe->cfg; + struct vpfe_subdev_info *sdinfo; + int i, j = 0; + + for (i = 0; i < ARRAY_SIZE(vpfe->cfg->asd); i++) { + sdinfo = &cfg->sub_devs[i]; + if (app_input_index < (j + 1)) { + *subdev_index = i; + *subdev_input_index = app_input_index - j; + return 0; + } + j++; + } + return -EINVAL; +} + +/* + * vpfe_get_app_input - Get app input index for a given subdev input index + * driver stores the input index of the current sub device and translate it + * when application request the current input + */ +static int vpfe_get_app_input_index(struct vpfe_device *vpfe, + int *app_input_index) +{ + struct vpfe_config *cfg = vpfe->cfg; + struct vpfe_subdev_info *sdinfo; + int i, j = 0; + + for (i = 0; i < ARRAY_SIZE(vpfe->cfg->asd); i++) { + sdinfo = &cfg->sub_devs[i]; + if (!strcmp(sdinfo->name, vpfe->current_subdev->name)) { + if (vpfe->current_input >= 1) + return -1; + *app_input_index = j + vpfe->current_input; + return 0; + } + j++; + } + return -EINVAL; +} + +static int vpfe_enum_input(struct file *file, void *priv, + struct v4l2_input *inp) +{ + struct vpfe_device *vpfe = video_drvdata(file); + struct vpfe_subdev_info *sdinfo; + int subdev, index; + + vpfe_dbg(2, vpfe, "vpfe_enum_input\n"); + + if (vpfe_get_subdev_input_index(vpfe, + &subdev, + &index, + inp->index) < 0) { + vpfe_dbg(1, vpfe, + "input information not found for the subdev\n"); + return -EINVAL; + } + sdinfo = &vpfe->cfg->sub_devs[subdev]; + *inp = sdinfo->inputs[index]; + + return 0; +} + +static int vpfe_g_input(struct file *file, void *priv, unsigned int *index) +{ + struct vpfe_device *vpfe = video_drvdata(file); + + vpfe_dbg(2, vpfe, "vpfe_g_input\n"); + + return vpfe_get_app_input_index(vpfe, index); +} + +/* Assumes caller is holding vpfe_dev->lock */ +static int vpfe_set_input(struct vpfe_device *vpfe, unsigned int index) +{ + int subdev_index = 0, inp_index = 0; + struct vpfe_subdev_info *sdinfo; + struct vpfe_route *route; + u32 input, output; + int ret; + + vpfe_dbg(2, vpfe, "vpfe_set_input: index: %d\n", index); + + /* If streaming is started, return error */ + if (vb2_is_busy(&vpfe->buffer_queue)) { + vpfe_err(vpfe, "%s device busy\n", __func__); + return -EBUSY; + } + ret = vpfe_get_subdev_input_index(vpfe, + &subdev_index, + &inp_index, + index); + if (ret < 0) { + vpfe_err(vpfe, "invalid input index: %d\n", index); + goto get_out; + } + + sdinfo = &vpfe->cfg->sub_devs[subdev_index]; + sdinfo->sd = vpfe->sd[subdev_index]; + route = &sdinfo->routes[inp_index]; + if (route && sdinfo->can_route) { + input = route->input; + output = route->output; + if (sdinfo->sd) { + ret = v4l2_subdev_call(sdinfo->sd, video, + s_routing, input, output, 0); + if (ret) { + vpfe_err(vpfe, "s_routing failed\n"); + ret = -EINVAL; + goto get_out; + } + } + + } + + vpfe->current_subdev = sdinfo; + if (sdinfo->sd) + vpfe->v4l2_dev.ctrl_handler = sdinfo->sd->ctrl_handler; + vpfe->current_input = index; + vpfe->std_index = 0; + + /* set the bus/interface parameter for the sub device in ccdc */ + ret = vpfe_ccdc_set_hw_if_params(&vpfe->ccdc, &sdinfo->vpfe_param); + if (ret) + return ret; + + /* set the default image parameters in the device */ + return vpfe_config_image_format(vpfe, + vpfe_standards[vpfe->std_index].std_id); + +get_out: + return ret; +} + +static int vpfe_s_input(struct file *file, void *priv, unsigned int index) +{ + struct vpfe_device *vpfe = video_drvdata(file); + + vpfe_dbg(2, vpfe, + "vpfe_s_input: index: %d\n", index); + + return vpfe_set_input(vpfe, index); +} + +static int vpfe_querystd(struct file *file, void *priv, v4l2_std_id *std_id) +{ + struct vpfe_device *vpfe = video_drvdata(file); + struct vpfe_subdev_info *sdinfo; + + vpfe_dbg(2, vpfe, "vpfe_querystd\n"); + + sdinfo = vpfe->current_subdev; + if (!(sdinfo->inputs[0].capabilities & V4L2_IN_CAP_STD)) + return -ENODATA; + + /* Call querystd function of decoder device */ + return v4l2_device_call_until_err(&vpfe->v4l2_dev, sdinfo->grp_id, + video, querystd, std_id); +} + +static int vpfe_s_std(struct file *file, void *priv, v4l2_std_id std_id) +{ + struct vpfe_device *vpfe = video_drvdata(file); + struct vpfe_subdev_info *sdinfo; + int ret; + + vpfe_dbg(2, vpfe, "vpfe_s_std\n"); + + sdinfo = vpfe->current_subdev; + if (!(sdinfo->inputs[0].capabilities & V4L2_IN_CAP_STD)) + return -ENODATA; + + /* If streaming is started, return error */ + if (vb2_is_busy(&vpfe->buffer_queue)) { + vpfe_err(vpfe, "%s device busy\n", __func__); + ret = -EBUSY; + return ret; + } + + ret = v4l2_device_call_until_err(&vpfe->v4l2_dev, sdinfo->grp_id, + video, s_std, std_id); + if (ret < 0) { + vpfe_err(vpfe, "Failed to set standard\n"); + return ret; + } + ret = vpfe_config_image_format(vpfe, std_id); + + return ret; +} + +static int vpfe_g_std(struct file *file, void *priv, v4l2_std_id *std_id) +{ + struct vpfe_device *vpfe = video_drvdata(file); + struct vpfe_subdev_info *sdinfo; + + vpfe_dbg(2, vpfe, "vpfe_g_std\n"); + + sdinfo = vpfe->current_subdev; + if (sdinfo->inputs[0].capabilities != V4L2_IN_CAP_STD) + return -ENODATA; + + *std_id = vpfe_standards[vpfe->std_index].std_id; + + return 0; +} + +/* + * vpfe_calculate_offsets : This function calculates buffers offset + * for top and bottom field + */ +static void vpfe_calculate_offsets(struct vpfe_device *vpfe) +{ + struct v4l2_rect image_win; + + vpfe_dbg(2, vpfe, "vpfe_calculate_offsets\n"); + + vpfe_ccdc_get_image_window(&vpfe->ccdc, &image_win); + vpfe->field_off = image_win.height * image_win.width; +} + +/* + * vpfe_queue_setup - Callback function for buffer setup. + * @vq: vb2_queue ptr + * @fmt: v4l2 format + * @nbuffers: ptr to number of buffers requested by application + * @nplanes:: contains number of distinct video planes needed to hold a frame + * @sizes[]: contains the size (in bytes) of each plane. + * @alloc_ctxs: ptr to allocation context + * + * This callback function is called when reqbuf() is called to adjust + * the buffer count and buffer size + */ +static int vpfe_queue_setup(struct vb2_queue *vq, + const struct v4l2_format *fmt, + unsigned int *nbuffers, unsigned int *nplanes, + unsigned int sizes[], void *alloc_ctxs[]) +{ + struct vpfe_device *vpfe = vb2_get_drv_priv(vq); + + if (fmt && fmt->fmt.pix.sizeimage < vpfe->fmt.fmt.pix.sizeimage) + return -EINVAL; + + if (vq->num_buffers + *nbuffers < 3) + *nbuffers = 3 - vq->num_buffers; + + *nplanes = 1; + sizes[0] = fmt ? fmt->fmt.pix.sizeimage : vpfe->fmt.fmt.pix.sizeimage; + alloc_ctxs[0] = vpfe->alloc_ctx; + + vpfe_dbg(1, vpfe, + "nbuffers=%d, size=%u\n", *nbuffers, sizes[0]); + + /* Calculate field offset */ + vpfe_calculate_offsets(vpfe); + + return 0; +} + +/* + * vpfe_buffer_prepare : callback function for buffer prepare + * @vb: ptr to vb2_buffer + * + * This is the callback function for buffer prepare when vb2_qbuf() + * function is called. The buffer is prepared and user space virtual address + * or user address is converted into physical address + */ +static int vpfe_buffer_prepare(struct vb2_buffer *vb) +{ + struct vpfe_device *vpfe = vb2_get_drv_priv(vb->vb2_queue); + + vb2_set_plane_payload(vb, 0, vpfe->fmt.fmt.pix.sizeimage); + + if (vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0)) + return -EINVAL; + + vb->v4l2_buf.field = vpfe->fmt.fmt.pix.field; + + return 0; +} + +/* + * vpfe_buffer_queue : Callback function to add buffer to DMA queue + * @vb: ptr to vb2_buffer + */ +static void vpfe_buffer_queue(struct vb2_buffer *vb) +{ + struct vpfe_device *vpfe = vb2_get_drv_priv(vb->vb2_queue); + struct vpfe_cap_buffer *buf = to_vpfe_buffer(vb); + unsigned long flags = 0; + + /* add the buffer to the DMA queue */ + spin_lock_irqsave(&vpfe->dma_queue_lock, flags); + list_add_tail(&buf->list, &vpfe->dma_queue); + spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags); +} + +/* + * vpfe_start_streaming : Starts the DMA engine for streaming + * @vb: ptr to vb2_buffer + * @count: number of buffers + */ +static int vpfe_start_streaming(struct vb2_queue *vq, unsigned int count) +{ + struct vpfe_device *vpfe = vb2_get_drv_priv(vq); + struct vpfe_cap_buffer *buf, *tmp; + struct vpfe_subdev_info *sdinfo; + unsigned long flags; + unsigned long addr; + int ret; + + spin_lock_irqsave(&vpfe->dma_queue_lock, flags); + + vpfe->field = 0; + vpfe->sequence = 0; + + sdinfo = vpfe->current_subdev; + + vpfe_attach_irq(vpfe); + + if (vpfe->ccdc.ccdc_cfg.if_type == VPFE_RAW_BAYER) + vpfe_ccdc_config_raw(&vpfe->ccdc); + else + vpfe_ccdc_config_ycbcr(&vpfe->ccdc); + + /* Get the next frame from the buffer queue */ + vpfe->next_frm = list_entry(vpfe->dma_queue.next, + struct vpfe_cap_buffer, list); + vpfe->cur_frm = vpfe->next_frm; + /* Remove buffer from the buffer queue */ + list_del(&vpfe->cur_frm->list); + spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags); + + addr = vb2_dma_contig_plane_dma_addr(&vpfe->cur_frm->vb, 0); + + vpfe_set_sdr_addr(&vpfe->ccdc, (unsigned long)(addr)); + + vpfe_pcr_enable(&vpfe->ccdc, 1); + + ret = v4l2_subdev_call(sdinfo->sd, video, s_stream, 1); + if (ret < 0) { + vpfe_err(vpfe, "Error in attaching interrupt handle\n"); + goto err; + } + + return 0; + +err: + list_for_each_entry_safe(buf, tmp, &vpfe->dma_queue, list) { + list_del(&buf->list); + vb2_buffer_done(&buf->vb, VB2_BUF_STATE_QUEUED); + } + spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags); + + return ret; +} + +/* + * vpfe_stop_streaming : Stop the DMA engine + * @vq: ptr to vb2_queue + * + * This callback stops the DMA engine and any remaining buffers + * in the DMA queue are released. + */ +static void vpfe_stop_streaming(struct vb2_queue *vq) +{ + struct vpfe_device *vpfe = vb2_get_drv_priv(vq); + struct vpfe_subdev_info *sdinfo; + unsigned long flags; + int ret; + + vpfe_pcr_enable(&vpfe->ccdc, 0); + + vpfe_detach_irq(vpfe); + + sdinfo = vpfe->current_subdev; + ret = v4l2_subdev_call(sdinfo->sd, video, s_stream, 0); + if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) + vpfe_dbg(1, vpfe, "stream off failed in subdev\n"); + + /* release all active buffers */ + spin_lock_irqsave(&vpfe->dma_queue_lock, flags); + if (vpfe->cur_frm == vpfe->next_frm) { + vb2_buffer_done(&vpfe->cur_frm->vb, VB2_BUF_STATE_ERROR); + } else { + if (vpfe->cur_frm != NULL) + vb2_buffer_done(&vpfe->cur_frm->vb, + VB2_BUF_STATE_ERROR); + if (vpfe->next_frm != NULL) + vb2_buffer_done(&vpfe->next_frm->vb, + VB2_BUF_STATE_ERROR); + } + + while (!list_empty(&vpfe->dma_queue)) { + vpfe->next_frm = list_entry(vpfe->dma_queue.next, + struct vpfe_cap_buffer, list); + list_del(&vpfe->next_frm->list); + vb2_buffer_done(&vpfe->next_frm->vb, VB2_BUF_STATE_ERROR); + } + spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags); +} + +static int vpfe_cropcap(struct file *file, void *priv, + struct v4l2_cropcap *crop) +{ + struct vpfe_device *vpfe = video_drvdata(file); + + vpfe_dbg(2, vpfe, "vpfe_cropcap\n"); + + if (vpfe->std_index >= ARRAY_SIZE(vpfe_standards)) + return -EINVAL; + + memset(crop, 0, sizeof(struct v4l2_cropcap)); + + crop->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + crop->defrect.width = vpfe_standards[vpfe->std_index].width; + crop->bounds.width = crop->defrect.width; + crop->defrect.height = vpfe_standards[vpfe->std_index].height; + crop->bounds.height = crop->defrect.height; + crop->pixelaspect = vpfe_standards[vpfe->std_index].pixelaspect; + + return 0; +} + +static int +vpfe_g_selection(struct file *file, void *fh, struct v4l2_selection *s) +{ + struct vpfe_device *vpfe = video_drvdata(file); + + switch (s->target) { + case V4L2_SEL_TGT_COMPOSE_DEFAULT: + case V4L2_SEL_TGT_COMPOSE_BOUNDS: + case V4L2_SEL_TGT_CROP_BOUNDS: + case V4L2_SEL_TGT_CROP_DEFAULT: + s->r.left = s->r.top = 0; + s->r.width = vpfe->crop.width; + s->r.height = vpfe->crop.height; + break; + + case V4L2_SEL_TGT_COMPOSE: + case V4L2_SEL_TGT_CROP: + s->r = vpfe->crop; + break; + + default: + return -EINVAL; + } + + return 0; +} + +static int enclosed_rectangle(struct v4l2_rect *a, struct v4l2_rect *b) +{ + if (a->left < b->left || a->top < b->top) + return 0; + + if (a->left + a->width > b->left + b->width) + return 0; + + if (a->top + a->height > b->top + b->height) + return 0; + + return 1; +} + +static int +vpfe_s_selection(struct file *file, void *fh, struct v4l2_selection *s) +{ + struct vpfe_device *vpfe = video_drvdata(file); + struct v4l2_rect cr = vpfe->crop; + struct v4l2_rect r = s->r; + + /* If streaming is started, return error */ + if (vb2_is_busy(&vpfe->buffer_queue)) { + vpfe_err(vpfe, "%s device busy\n", __func__); + return -EBUSY; + } + + if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || + (s->target != V4L2_SEL_TGT_COMPOSE && + s->target != V4L2_SEL_TGT_CROP)) + return -EINVAL; + + v4l_bound_align_image(&r.width, 0, cr.width, 0, + &r.height, 0, cr.height, 0, 0); + + r.left = clamp_t(unsigned int, r.left, 0, cr.width - r.width); + r.top = clamp_t(unsigned int, r.top, 0, cr.height - r.height); + + if (s->flags & V4L2_SEL_FLAG_LE && !enclosed_rectangle(&r, &s->r)) + return -ERANGE; + + if (s->flags & V4L2_SEL_FLAG_GE && !enclosed_rectangle(&s->r, &r)) + return -ERANGE; + + s->r = vpfe->crop = r; + + vpfe_ccdc_set_image_window(&vpfe->ccdc, &r, vpfe->bpp); + vpfe->fmt.fmt.pix.width = r.width; + vpfe->fmt.fmt.pix.height = r.height; + vpfe->fmt.fmt.pix.bytesperline = vpfe_ccdc_get_line_length(&vpfe->ccdc); + vpfe->fmt.fmt.pix.sizeimage = vpfe->fmt.fmt.pix.bytesperline * + vpfe->fmt.fmt.pix.height; + + vpfe_dbg(1, vpfe, "cropped (%d,%d)/%dx%d of %dx%d\n", + r.left, r.top, r.width, r.height, cr.width, cr.height); + + return 0; +} + +static long vpfe_ioctl_default(struct file *file, void *priv, + bool valid_prio, unsigned int cmd, void *param) +{ + struct vpfe_device *vpfe = video_drvdata(file); + int ret; + + vpfe_dbg(2, vpfe, "vpfe_ioctl_default\n"); + + if (!valid_prio) { + vpfe_err(vpfe, "%s device busy\n", __func__); + return -EBUSY; + } + + /* If streaming is started, return error */ + if (vb2_is_busy(&vpfe->buffer_queue)) { + vpfe_err(vpfe, "%s device busy\n", __func__); + return -EBUSY; + } + + switch (cmd) { + case VIDIOC_AM437X_CCDC_CFG: + ret = vpfe_ccdc_set_params(&vpfe->ccdc, param); + if (ret) { + vpfe_dbg(2, vpfe, + "Error setting parameters in CCDC\n"); + return ret; + } + ret = vpfe_get_ccdc_image_format(vpfe, + &vpfe->fmt); + if (ret < 0) { + vpfe_dbg(2, vpfe, + "Invalid image format at CCDC\n"); + return ret; + } + break; + + default: + ret = -ENOTTY; + break; + } + + return ret; +} + +static const struct vb2_ops vpfe_video_qops = { + .wait_prepare = vb2_ops_wait_prepare, + .wait_finish = vb2_ops_wait_finish, + .queue_setup = vpfe_queue_setup, + .buf_prepare = vpfe_buffer_prepare, + .buf_queue = vpfe_buffer_queue, + .start_streaming = vpfe_start_streaming, + .stop_streaming = vpfe_stop_streaming, +}; + +/* vpfe capture driver file operations */ +static const struct v4l2_file_operations vpfe_fops = { + .owner = THIS_MODULE, + .open = vpfe_open, + .release = vpfe_release, + .read = vb2_fop_read, + .poll = vb2_fop_poll, + .unlocked_ioctl = video_ioctl2, + .mmap = vb2_fop_mmap, + +}; + +/* vpfe capture ioctl operations */ +static const struct v4l2_ioctl_ops vpfe_ioctl_ops = { + .vidioc_querycap = vpfe_querycap, + .vidioc_enum_fmt_vid_cap = vpfe_enum_fmt, + .vidioc_g_fmt_vid_cap = vpfe_g_fmt, + .vidioc_s_fmt_vid_cap = vpfe_s_fmt, + .vidioc_try_fmt_vid_cap = vpfe_try_fmt, + + .vidioc_enum_framesizes = vpfe_enum_size, + + .vidioc_enum_input = vpfe_enum_input, + .vidioc_g_input = vpfe_g_input, + .vidioc_s_input = vpfe_s_input, + + .vidioc_querystd = vpfe_querystd, + .vidioc_s_std = vpfe_s_std, + .vidioc_g_std = vpfe_g_std, + + .vidioc_reqbufs = vb2_ioctl_reqbufs, + .vidioc_create_bufs = vb2_ioctl_create_bufs, + .vidioc_prepare_buf = vb2_ioctl_prepare_buf, + .vidioc_querybuf = vb2_ioctl_querybuf, + .vidioc_qbuf = vb2_ioctl_qbuf, + .vidioc_dqbuf = vb2_ioctl_dqbuf, + .vidioc_expbuf = vb2_ioctl_expbuf, + .vidioc_streamon = vb2_ioctl_streamon, + .vidioc_streamoff = vb2_ioctl_streamoff, + + .vidioc_log_status = v4l2_ctrl_log_status, + .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, + + .vidioc_cropcap = vpfe_cropcap, + .vidioc_g_selection = vpfe_g_selection, + .vidioc_s_selection = vpfe_s_selection, + + .vidioc_default = vpfe_ioctl_default, +}; + +static int +vpfe_async_bound(struct v4l2_async_notifier *notifier, + struct v4l2_subdev *subdev, + struct v4l2_async_subdev *asd) +{ + struct vpfe_device *vpfe = container_of(notifier->v4l2_dev, + struct vpfe_device, v4l2_dev); + struct v4l2_subdev_mbus_code_enum mbus_code; + struct vpfe_subdev_info *sdinfo; + bool found = false; + int i, j; + + vpfe_dbg(1, vpfe, "vpfe_async_bound\n"); + + for (i = 0; i < ARRAY_SIZE(vpfe->cfg->asd); i++) { + sdinfo = &vpfe->cfg->sub_devs[i]; + + if (!strcmp(sdinfo->name, subdev->name)) { + vpfe->sd[i] = subdev; + vpfe_info(vpfe, + "v4l2 sub device %s registered\n", + subdev->name); + vpfe->sd[i]->grp_id = + sdinfo->grp_id; + /* update tvnorms from the sub devices */ + for (j = 0; j < 1; j++) + vpfe->video_dev->tvnorms |= + sdinfo->inputs[j].std; + + found = true; + break; + } + } + + if (!found) { + vpfe_info(vpfe, "sub device (%s) not matched\n", subdev->name); + return -EINVAL; + } + + for (j = 0; ; ++j) { + int ret; + + memset(&mbus_code, 0, sizeof(mbus_code)); + mbus_code.index = j; + ret = v4l2_subdev_call(subdev, pad, enum_mbus_code, + NULL, &mbus_code); + if (ret) + break; + + find_format_by_code(mbus_code.code, true); + } + + return 0; +} + +static int vpfe_probe_complete(struct vpfe_device *vpfe) +{ + struct video_device *vdev; + struct vb2_queue *q; + int err; + + spin_lock_init(&vpfe->dma_queue_lock); + mutex_init(&vpfe->lock); + + vpfe->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + + /* set first sub device as current one */ + vpfe->current_subdev = &vpfe->cfg->sub_devs[0]; + vpfe->v4l2_dev.ctrl_handler = vpfe->sd[0]->ctrl_handler; + + err = vpfe_set_input(vpfe, 0); + if (err) + goto probe_out; + + /* Initialize videobuf2 queue as per the buffer type */ + vpfe->alloc_ctx = vb2_dma_contig_init_ctx(vpfe->pdev); + if (IS_ERR(vpfe->alloc_ctx)) { + vpfe_err(vpfe, "Failed to get the context\n"); + err = PTR_ERR(vpfe->alloc_ctx); + goto probe_out; + } + + q = &vpfe->buffer_queue; + q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + q->io_modes = VB2_MMAP | VB2_DMABUF | VB2_READ; + q->drv_priv = vpfe; + q->ops = &vpfe_video_qops; + q->mem_ops = &vb2_dma_contig_memops; + q->buf_struct_size = sizeof(struct vpfe_cap_buffer); + q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; + q->lock = &vpfe->lock; + q->min_buffers_needed = 1; + + err = vb2_queue_init(q); + if (err) { + vpfe_err(vpfe, "vb2_queue_init() failed\n"); + vb2_dma_contig_cleanup_ctx(vpfe->alloc_ctx); + goto probe_out; + } + + INIT_LIST_HEAD(&vpfe->dma_queue); + + vdev = vpfe->video_dev; + strlcpy(vdev->name, VPFE_MODULE_NAME, sizeof(vdev->name)); + vdev->release = video_device_release; + vdev->fops = &vpfe_fops; + vdev->ioctl_ops = &vpfe_ioctl_ops; + vdev->v4l2_dev = &vpfe->v4l2_dev; + vdev->vfl_dir = VFL_DIR_RX; + vdev->queue = q; + vdev->lock = &vpfe->lock; + video_set_drvdata(vdev, vpfe); + err = video_register_device(vpfe->video_dev, VFL_TYPE_GRABBER, -1); + if (err) { + vpfe_err(vpfe, + "Unable to register video device.\n"); + goto probe_out; + } + + return 0; + +probe_out: + v4l2_device_unregister(&vpfe->v4l2_dev); + return err; +} + +static int vpfe_async_complete(struct v4l2_async_notifier *notifier) +{ + struct vpfe_device *vpfe = container_of(notifier->v4l2_dev, + struct vpfe_device, v4l2_dev); + + return vpfe_probe_complete(vpfe); +} + +static struct vpfe_config * +vpfe_get_pdata(struct platform_device *pdev) +{ + struct device_node *endpoint = NULL, *rem = NULL; + struct v4l2_of_endpoint bus_cfg; + struct vpfe_subdev_info *sdinfo; + struct vpfe_config *pdata; + unsigned int flags; + unsigned int i; + int err; + + dev_dbg(&pdev->dev, "vpfe_get_pdata\n"); + + if (!IS_ENABLED(CONFIG_OF) || !pdev->dev.of_node) + return pdev->dev.platform_data; + + pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return NULL; + + for (i = 0; ; i++) { + endpoint = of_graph_get_next_endpoint(pdev->dev.of_node, + endpoint); + if (!endpoint) + break; + + sdinfo = &pdata->sub_devs[i]; + sdinfo->grp_id = 0; + + /* we only support camera */ + sdinfo->inputs[0].index = i; + strcpy(sdinfo->inputs[0].name, "Camera"); + sdinfo->inputs[0].type = V4L2_INPUT_TYPE_CAMERA; + sdinfo->inputs[0].std = V4L2_STD_ALL; + sdinfo->inputs[0].capabilities = V4L2_IN_CAP_STD; + + sdinfo->can_route = 0; + sdinfo->routes = NULL; + + of_property_read_u32(endpoint, "ti,am437x-vpfe-interface", + &sdinfo->vpfe_param.if_type); + if (sdinfo->vpfe_param.if_type < 0 || + sdinfo->vpfe_param.if_type > 4) { + sdinfo->vpfe_param.if_type = VPFE_RAW_BAYER; + } + + err = v4l2_of_parse_endpoint(endpoint, &bus_cfg); + if (err) { + dev_err(&pdev->dev, "Could not parse the endpoint\n"); + goto done; + } + + sdinfo->vpfe_param.bus_width = bus_cfg.bus.parallel.bus_width; + + if (sdinfo->vpfe_param.bus_width < 8 || + sdinfo->vpfe_param.bus_width > 16) { + dev_err(&pdev->dev, "Invalid bus width.\n"); + goto done; + } + + flags = bus_cfg.bus.parallel.flags; + + if (flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) + sdinfo->vpfe_param.hdpol = 1; + + if (flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) + sdinfo->vpfe_param.vdpol = 1; + + rem = of_graph_get_remote_port_parent(endpoint); + if (!rem) { + dev_err(&pdev->dev, "Remote device at %s not found\n", + endpoint->full_name); + goto done; + } + + strncpy(sdinfo->name, rem->name, sizeof(sdinfo->name)); + + pdata->asd[i] = devm_kzalloc(&pdev->dev, + sizeof(struct v4l2_async_subdev), + GFP_KERNEL); + pdata->asd[i]->match_type = V4L2_ASYNC_MATCH_OF; + pdata->asd[i]->match.of.node = rem; + of_node_put(endpoint); + of_node_put(rem); + } + + of_node_put(endpoint); + return pdata; + +done: + of_node_put(endpoint); + of_node_put(rem); + return NULL; +} + +/* + * vpfe_probe : This function creates device entries by register + * itself to the V4L2 driver and initializes fields of each + * device objects + */ +static int vpfe_probe(struct platform_device *pdev) +{ + struct vpfe_config *vpfe_cfg = vpfe_get_pdata(pdev); + struct vpfe_device *vpfe; + struct vpfe_ccdc *ccdc; + struct resource *res; + int ret; + + if (!vpfe_cfg) { + dev_err(&pdev->dev, "No platform data\n"); + return -EINVAL; + } + + vpfe = devm_kzalloc(&pdev->dev, sizeof(*vpfe), GFP_KERNEL); + if (!vpfe) + return -ENOMEM; + + vpfe->pdev = &pdev->dev; + vpfe->cfg = vpfe_cfg; + ccdc = &vpfe->ccdc; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + ccdc->ccdc_cfg.base_addr = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(ccdc->ccdc_cfg.base_addr)) + return PTR_ERR(ccdc->ccdc_cfg.base_addr); + + vpfe->irq = platform_get_irq(pdev, 0); + if (vpfe->irq <= 0) { + dev_err(&pdev->dev, "No IRQ resource\n"); + return -ENODEV; + } + + ret = devm_request_irq(vpfe->pdev, vpfe->irq, vpfe_isr, 0, + "vpfe_capture0", vpfe); + if (ret) { + dev_err(&pdev->dev, "Unable to request interrupt\n"); + return -EINVAL; + } + + vpfe->video_dev = video_device_alloc(); + if (!vpfe->video_dev) { + dev_err(&pdev->dev, "Unable to alloc video device\n"); + return -ENOMEM; + } + + ret = v4l2_device_register(&pdev->dev, &vpfe->v4l2_dev); + if (ret) { + vpfe_err(vpfe, + "Unable to register v4l2 device.\n"); + goto probe_out_video_release; + } + + /* set the driver data in platform device */ + platform_set_drvdata(pdev, vpfe); + /* Enabling module functional clock */ + pm_runtime_enable(&pdev->dev); + + /* for now just enable it here instead of waiting for the open */ + pm_runtime_get_sync(&pdev->dev); + + vpfe_ccdc_config_defaults(ccdc); + + pm_runtime_put_sync(&pdev->dev); + + vpfe->sd = devm_kzalloc(&pdev->dev, sizeof(struct v4l2_subdev *) * + ARRAY_SIZE(vpfe->cfg->asd), GFP_KERNEL); + if (!vpfe->sd) { + ret = -ENOMEM; + goto probe_out_v4l2_unregister; + } + + vpfe->notifier.subdevs = vpfe->cfg->asd; + vpfe->notifier.num_subdevs = ARRAY_SIZE(vpfe->cfg->asd); + vpfe->notifier.bound = vpfe_async_bound; + vpfe->notifier.complete = vpfe_async_complete; + ret = v4l2_async_notifier_register(&vpfe->v4l2_dev, + &vpfe->notifier); + if (ret) { + vpfe_err(vpfe, "Error registering async notifier\n"); + ret = -EINVAL; + goto probe_out_v4l2_unregister; + } + + return 0; + +probe_out_v4l2_unregister: + v4l2_device_unregister(&vpfe->v4l2_dev); +probe_out_video_release: + if (!video_is_registered(vpfe->video_dev)) + video_device_release(vpfe->video_dev); + return ret; +} + +/* + * vpfe_remove : It un-register device from V4L2 driver + */ +static int vpfe_remove(struct platform_device *pdev) +{ + struct vpfe_device *vpfe = platform_get_drvdata(pdev); + + vpfe_dbg(2, vpfe, "vpfe_remove\n"); + + pm_runtime_disable(&pdev->dev); + + v4l2_async_notifier_unregister(&vpfe->notifier); + v4l2_device_unregister(&vpfe->v4l2_dev); + video_unregister_device(vpfe->video_dev); + + return 0; +} + +#ifdef CONFIG_PM_SLEEP + +static void vpfe_save_context(struct vpfe_ccdc *ccdc) +{ + ccdc->ccdc_ctx[VPFE_PCR >> 2] = vpfe_reg_read(ccdc, VPFE_PCR); + ccdc->ccdc_ctx[VPFE_SYNMODE >> 2] = vpfe_reg_read(ccdc, VPFE_SYNMODE); + ccdc->ccdc_ctx[VPFE_SDOFST >> 2] = vpfe_reg_read(ccdc, VPFE_SDOFST); + ccdc->ccdc_ctx[VPFE_SDR_ADDR >> 2] = vpfe_reg_read(ccdc, VPFE_SDR_ADDR); + ccdc->ccdc_ctx[VPFE_CLAMP >> 2] = vpfe_reg_read(ccdc, VPFE_CLAMP); + ccdc->ccdc_ctx[VPFE_DCSUB >> 2] = vpfe_reg_read(ccdc, VPFE_DCSUB); + ccdc->ccdc_ctx[VPFE_COLPTN >> 2] = vpfe_reg_read(ccdc, VPFE_COLPTN); + ccdc->ccdc_ctx[VPFE_BLKCMP >> 2] = vpfe_reg_read(ccdc, VPFE_BLKCMP); + ccdc->ccdc_ctx[VPFE_VDINT >> 2] = vpfe_reg_read(ccdc, VPFE_VDINT); + ccdc->ccdc_ctx[VPFE_ALAW >> 2] = vpfe_reg_read(ccdc, VPFE_ALAW); + ccdc->ccdc_ctx[VPFE_REC656IF >> 2] = vpfe_reg_read(ccdc, VPFE_REC656IF); + ccdc->ccdc_ctx[VPFE_CCDCFG >> 2] = vpfe_reg_read(ccdc, VPFE_CCDCFG); + ccdc->ccdc_ctx[VPFE_CULLING >> 2] = vpfe_reg_read(ccdc, VPFE_CULLING); + ccdc->ccdc_ctx[VPFE_HD_VD_WID >> 2] = vpfe_reg_read(ccdc, + VPFE_HD_VD_WID); + ccdc->ccdc_ctx[VPFE_PIX_LINES >> 2] = vpfe_reg_read(ccdc, + VPFE_PIX_LINES); + ccdc->ccdc_ctx[VPFE_HORZ_INFO >> 2] = vpfe_reg_read(ccdc, + VPFE_HORZ_INFO); + ccdc->ccdc_ctx[VPFE_VERT_START >> 2] = vpfe_reg_read(ccdc, + VPFE_VERT_START); + ccdc->ccdc_ctx[VPFE_VERT_LINES >> 2] = vpfe_reg_read(ccdc, + VPFE_VERT_LINES); + ccdc->ccdc_ctx[VPFE_HSIZE_OFF >> 2] = vpfe_reg_read(ccdc, + VPFE_HSIZE_OFF); +} + +static int vpfe_suspend(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct vpfe_device *vpfe = platform_get_drvdata(pdev); + struct vpfe_ccdc *ccdc = &vpfe->ccdc; + + /* if streaming has not started we dont care */ + if (!vb2_start_streaming_called(&vpfe->buffer_queue)) + return 0; + + pm_runtime_get_sync(dev); + vpfe_config_enable(ccdc, 1); + + /* Save VPFE context */ + vpfe_save_context(ccdc); + + /* Disable CCDC */ + vpfe_pcr_enable(ccdc, 0); + vpfe_config_enable(ccdc, 0); + + /* Disable both master and slave clock */ + pm_runtime_put_sync(dev); + + /* Select sleep pin state */ + pinctrl_pm_select_sleep_state(dev); + + return 0; +} + +static void vpfe_restore_context(struct vpfe_ccdc *ccdc) +{ + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_SYNMODE >> 2], VPFE_SYNMODE); + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_CULLING >> 2], VPFE_CULLING); + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_SDOFST >> 2], VPFE_SDOFST); + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_SDR_ADDR >> 2], VPFE_SDR_ADDR); + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_CLAMP >> 2], VPFE_CLAMP); + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_DCSUB >> 2], VPFE_DCSUB); + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_COLPTN >> 2], VPFE_COLPTN); + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_BLKCMP >> 2], VPFE_BLKCMP); + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_VDINT >> 2], VPFE_VDINT); + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_ALAW >> 2], VPFE_ALAW); + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_REC656IF >> 2], VPFE_REC656IF); + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_CCDCFG >> 2], VPFE_CCDCFG); + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_PCR >> 2], VPFE_PCR); + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_HD_VD_WID >> 2], + VPFE_HD_VD_WID); + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_PIX_LINES >> 2], + VPFE_PIX_LINES); + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_HORZ_INFO >> 2], + VPFE_HORZ_INFO); + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_VERT_START >> 2], + VPFE_VERT_START); + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_VERT_LINES >> 2], + VPFE_VERT_LINES); + vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_HSIZE_OFF >> 2], + VPFE_HSIZE_OFF); +} + +static int vpfe_resume(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct vpfe_device *vpfe = platform_get_drvdata(pdev); + struct vpfe_ccdc *ccdc = &vpfe->ccdc; + + /* if streaming has not started we dont care */ + if (!vb2_start_streaming_called(&vpfe->buffer_queue)) + return 0; + + /* Enable both master and slave clock */ + pm_runtime_get_sync(dev); + vpfe_config_enable(ccdc, 1); + + /* Restore VPFE context */ + vpfe_restore_context(ccdc); + + vpfe_config_enable(ccdc, 0); + pm_runtime_put_sync(dev); + + /* Select default pin state */ + pinctrl_pm_select_default_state(dev); + + return 0; +} + +#endif + +static SIMPLE_DEV_PM_OPS(vpfe_pm_ops, vpfe_suspend, vpfe_resume); + +static const struct of_device_id vpfe_of_match[] = { + { .compatible = "ti,am437x-vpfe", }, + { /* sentinel */ }, +}; +MODULE_DEVICE_TABLE(of, vpfe_of_match); + +static struct platform_driver vpfe_driver = { + .probe = vpfe_probe, + .remove = vpfe_remove, + .driver = { + .name = VPFE_MODULE_NAME, + .owner = THIS_MODULE, + .pm = &vpfe_pm_ops, + .of_match_table = of_match_ptr(vpfe_of_match), + }, +}; + +module_platform_driver(vpfe_driver); + +MODULE_AUTHOR("Texas Instruments"); +MODULE_DESCRIPTION("TI AM437x VPFE driver"); +MODULE_LICENSE("GPL"); +MODULE_VERSION(VPFE_VERSION); diff --git a/drivers/media/platform/am437x/am437x-vpfe.h b/drivers/media/platform/am437x/am437x-vpfe.h new file mode 100644 index 0000000..05ff7b5 --- /dev/null +++ b/drivers/media/platform/am437x/am437x-vpfe.h @@ -0,0 +1,287 @@ +/* + * Copyright (C) 2013 - 2014 Texas Instruments, Inc. + * + * Benoit Parrot <bparrot@ti.com> + * Lad, Prabhakar <prabhakar.csengg@gmail.com> + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#ifndef AM437X_VPFE_H +#define AM437X_VPFE_H + +#include <linux/am437x-vpfe.h> +#include <linux/clk.h> +#include <linux/device.h> +#include <linux/io.h> +#include <linux/i2c.h> +#include <linux/videodev2.h> + +#include <media/v4l2-dev.h> +#include <media/v4l2-device.h> +#include <media/v4l2-ioctl.h> +#include <media/videobuf2-dma-contig.h> + +#include "am437x-vpfe_regs.h" + +enum vpfe_pin_pol { + VPFE_PINPOL_POSITIVE, + VPFE_PINPOL_NEGATIVE +}; + +enum vpfe_hw_if_type { + /* Raw Bayer */ + VPFE_RAW_BAYER = 0, + /* BT656 - 8 bit */ + VPFE_BT656, + /* BT656 - 10 bit */ + VPFE_BT656_10BIT, + /* YCbCr - 8 bit with external sync */ + VPFE_YCBCR_SYNC_8, + /* YCbCr - 16 bit with external sync */ + VPFE_YCBCR_SYNC_16, +}; + +/* interface description */ +struct vpfe_hw_if_param { + enum vpfe_hw_if_type if_type; + enum vpfe_pin_pol hdpol; + enum vpfe_pin_pol vdpol; + unsigned int bus_width; +}; + +#define VPFE_MAX_SUBDEV 1 +#define VPFE_MAX_INPUTS 1 + +struct vpfe_pixel_format { + struct v4l2_fmtdesc fmtdesc; + /* bytes per pixel */ + int bpp; +}; + +struct vpfe_std_info { + int active_pixels; + int active_lines; + /* current frame format */ + int frame_format; +}; + +struct vpfe_route { + u32 input; + u32 output; +}; + +struct vpfe_subdev_info { + char name[32]; + /* Sub device group id */ + int grp_id; + /* inputs available at the sub device */ + struct v4l2_input inputs[VPFE_MAX_INPUTS]; + /* Sub dev routing information for each input */ + struct vpfe_route *routes; + /* check if sub dev supports routing */ + int can_route; + /* ccdc bus/interface configuration */ + struct vpfe_hw_if_param vpfe_param; + struct v4l2_subdev *sd; +}; + +struct vpfe_config { + /* information about each subdev */ + struct vpfe_subdev_info sub_devs[VPFE_MAX_SUBDEV]; + /* Flat array, arranged in groups */ + struct v4l2_async_subdev *asd[VPFE_MAX_SUBDEV]; +}; + +struct vpfe_cap_buffer { + struct vb2_buffer vb; + struct list_head list; +}; + +enum ccdc_pixfmt { + CCDC_PIXFMT_RAW = 0, + CCDC_PIXFMT_YCBCR_16BIT, + CCDC_PIXFMT_YCBCR_8BIT, +}; + +enum ccdc_frmfmt { + CCDC_FRMFMT_PROGRESSIVE = 0, + CCDC_FRMFMT_INTERLACED, +}; + +/* PIXEL ORDER IN MEMORY from LSB to MSB */ +/* only applicable for 8-bit input mode */ +enum ccdc_pixorder { + CCDC_PIXORDER_YCBYCR, + CCDC_PIXORDER_CBYCRY, +}; + +enum ccdc_buftype { + CCDC_BUFTYPE_FLD_INTERLEAVED, + CCDC_BUFTYPE_FLD_SEPARATED +}; + + +/* returns the highest bit used for the gamma */ +static inline u8 ccdc_gamma_width_max_bit(enum vpfe_ccdc_gamma_width width) +{ + return 15 - width; +} + +/* returns the highest bit used for this data size */ +static inline u8 ccdc_data_size_max_bit(enum vpfe_ccdc_data_size sz) +{ + return sz == VPFE_CCDC_DATA_8BITS ? 7 : 15 - sz; +} + +/* Structure for CCDC configuration parameters for raw capture mode */ +struct ccdc_params_raw { + /* pixel format */ + enum ccdc_pixfmt pix_fmt; + /* progressive or interlaced frame */ + enum ccdc_frmfmt frm_fmt; + struct v4l2_rect win; + /* Current Format Bytes Per Pixels */ + unsigned int bytesperpixel; + /* Current Format Bytes per Lines + * (Aligned to 32 bytes) used for HORZ_INFO + */ + unsigned int bytesperline; + /* field id polarity */ + enum vpfe_pin_pol fid_pol; + /* vertical sync polarity */ + enum vpfe_pin_pol vd_pol; + /* horizontal sync polarity */ + enum vpfe_pin_pol hd_pol; + /* interleaved or separated fields */ + enum ccdc_buftype buf_type; + /* + * enable to store the image in inverse + * order in memory(bottom to top) + */ + unsigned char image_invert_enable; + /* configurable paramaters */ + struct vpfe_ccdc_config_params_raw config_params; +}; + +struct ccdc_params_ycbcr { + /* pixel format */ + enum ccdc_pixfmt pix_fmt; + /* progressive or interlaced frame */ + enum ccdc_frmfmt frm_fmt; + struct v4l2_rect win; + /* Current Format Bytes Per Pixels */ + unsigned int bytesperpixel; + /* Current Format Bytes per Lines + * (Aligned to 32 bytes) used for HORZ_INFO + */ + unsigned int bytesperline; + /* field id polarity */ + enum vpfe_pin_pol fid_pol; + /* vertical sync polarity */ + enum vpfe_pin_pol vd_pol; + /* horizontal sync polarity */ + enum vpfe_pin_pol hd_pol; + /* enable BT.656 embedded sync mode */ + int bt656_enable; + /* cb:y:cr:y or y:cb:y:cr in memory */ + enum ccdc_pixorder pix_order; + /* interleaved or separated fields */ + enum ccdc_buftype buf_type; +}; + +/* + * CCDC operational configuration + */ +struct ccdc_config { + /* CCDC interface type */ + enum vpfe_hw_if_type if_type; + /* Raw Bayer configuration */ + struct ccdc_params_raw bayer; + /* YCbCr configuration */ + struct ccdc_params_ycbcr ycbcr; + /* ccdc base address */ + void __iomem *base_addr; +}; + +struct vpfe_ccdc { + struct ccdc_config ccdc_cfg; + u32 ccdc_ctx[VPFE_REG_END / sizeof(u32)]; +}; + +struct vpfe_device { + /* V4l2 specific parameters */ + /* Identifies video device for this channel */ + struct video_device *video_dev; + /* sub devices */ + struct v4l2_subdev **sd; + /* vpfe cfg */ + struct vpfe_config *cfg; + /* V4l2 device */ + struct v4l2_device v4l2_dev; + /* parent device */ + struct device *pdev; + /* Subdevive Async Notifier */ + struct v4l2_async_notifier notifier; + /* Indicates id of the field which is being displayed */ + unsigned field; + unsigned sequence; + /* current interface type */ + struct vpfe_hw_if_param vpfe_if_params; + /* ptr to currently selected sub device */ + struct vpfe_subdev_info *current_subdev; + /* current input at the sub device */ + int current_input; + /* Keeps track of the information about the standard */ + struct vpfe_std_info std_info; + /* std index into std table */ + int std_index; + /* IRQs used when CCDC output to SDRAM */ + unsigned int irq; + /* number of buffers in fbuffers */ + u32 numbuffers; + /* List of buffer pointers for storing frames */ + u8 *fbuffers[VIDEO_MAX_FRAME]; + /* Pointer pointing to current v4l2_buffer */ + struct vpfe_cap_buffer *cur_frm; + /* Pointer pointing to next v4l2_buffer */ + struct vpfe_cap_buffer *next_frm; + /* Used to store pixel format */ + struct v4l2_format fmt; + /* Used to store current bytes per pixel based on current format */ + unsigned int bpp; + /* + * used when IMP is chained to store the crop window which + * is different from the image window + */ + struct v4l2_rect crop; + /* Buffer queue used in video-buf */ + struct vb2_queue buffer_queue; + /* Allocator-specific contexts for each plane */ + struct vb2_alloc_ctx *alloc_ctx; + /* Queue of filled frames */ + struct list_head dma_queue; + /* IRQ lock for DMA queue */ + spinlock_t dma_queue_lock; + /* lock used to access this structure */ + struct mutex lock; + /* + * offset where second field starts from the starting of the + * buffer for field separated YCbCr formats + */ + u32 field_off; + struct vpfe_ccdc ccdc; +}; + +#endif /* AM437X_VPFE_H */ diff --git a/drivers/media/platform/am437x/am437x-vpfe_regs.h b/drivers/media/platform/am437x/am437x-vpfe_regs.h new file mode 100644 index 0000000..4a0ed29 --- /dev/null +++ b/drivers/media/platform/am437x/am437x-vpfe_regs.h @@ -0,0 +1,140 @@ +/* + * TI AM437x Image Sensor Interface Registers + * + * Copyright (C) 2013 - 2014 Texas Instruments, Inc. + * + * Benoit Parrot <bparrot@ti.com> + * Lad, Prabhakar <prabhakar.csengg@gmail.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef AM437X_VPFE_REGS_H +#define AM437X_VPFE_REGS_H + +/* VPFE module register offset */ +#define VPFE_REVISION 0x0 +#define VPFE_PCR 0x4 +#define VPFE_SYNMODE 0x8 +#define VPFE_HD_VD_WID 0xc +#define VPFE_PIX_LINES 0x10 +#define VPFE_HORZ_INFO 0x14 +#define VPFE_VERT_START 0x18 +#define VPFE_VERT_LINES 0x1c +#define VPFE_CULLING 0x20 +#define VPFE_HSIZE_OFF 0x24 +#define VPFE_SDOFST 0x28 +#define VPFE_SDR_ADDR 0x2c +#define VPFE_CLAMP 0x30 +#define VPFE_DCSUB 0x34 +#define VPFE_COLPTN 0x38 +#define VPFE_BLKCMP 0x3c +#define VPFE_VDINT 0x48 +#define VPFE_ALAW 0x4c +#define VPFE_REC656IF 0x50 +#define VPFE_CCDCFG 0x54 +#define VPFE_DMA_CNTL 0x98 +#define VPFE_SYSCONFIG 0x104 +#define VPFE_CONFIG 0x108 +#define VPFE_IRQ_EOI 0x110 +#define VPFE_IRQ_STS_RAW 0x114 +#define VPFE_IRQ_STS 0x118 +#define VPFE_IRQ_EN_SET 0x11c +#define VPFE_IRQ_EN_CLR 0x120 +#define VPFE_REG_END 0x124 + +/* Define bit fields within selected registers */ +#define VPFE_FID_POL_MASK 1 +#define VPFE_FID_POL_SHIFT 4 +#define VPFE_HD_POL_MASK 1 +#define VPFE_HD_POL_SHIFT 3 +#define VPFE_VD_POL_MASK 1 +#define VPFE_VD_POL_SHIFT 2 +#define VPFE_HSIZE_OFF_MASK 0xffffffe0 +#define VPFE_32BYTE_ALIGN_VAL 31 +#define VPFE_FRM_FMT_MASK 0x1 +#define VPFE_FRM_FMT_SHIFT 7 +#define VPFE_DATA_SZ_MASK 7 +#define VPFE_DATA_SZ_SHIFT 8 +#define VPFE_PIX_FMT_MASK 3 +#define VPFE_PIX_FMT_SHIFT 12 +#define VPFE_VP2SDR_DISABLE 0xfffbffff +#define VPFE_WEN_ENABLE (1 << 17) +#define VPFE_SDR2RSZ_DISABLE 0xfff7ffff +#define VPFE_VDHDEN_ENABLE (1 << 16) +#define VPFE_LPF_ENABLE (1 << 14) +#define VPFE_ALAW_ENABLE (1 << 3) +#define VPFE_ALAW_GAMMA_WD_MASK 7 +#define VPFE_BLK_CLAMP_ENABLE (1 << 31) +#define VPFE_BLK_SGAIN_MASK 0x1f +#define VPFE_BLK_ST_PXL_MASK 0x7fff +#define VPFE_BLK_ST_PXL_SHIFT 10 +#define VPFE_BLK_SAMPLE_LN_MASK 7 +#define VPFE_BLK_SAMPLE_LN_SHIFT 28 +#define VPFE_BLK_SAMPLE_LINE_MASK 7 +#define VPFE_BLK_SAMPLE_LINE_SHIFT 25 +#define VPFE_BLK_DC_SUB_MASK 0x03fff +#define VPFE_BLK_COMP_MASK 0xff +#define VPFE_BLK_COMP_GB_COMP_SHIFT 8 +#define VPFE_BLK_COMP_GR_COMP_SHIFT 16 +#define VPFE_BLK_COMP_R_COMP_SHIFT 24 +#define VPFE_LATCH_ON_VSYNC_DISABLE (1 << 15) +#define VPFE_DATA_PACK_ENABLE (1 << 11) +#define VPFE_HORZ_INFO_SPH_SHIFT 16 +#define VPFE_VERT_START_SLV0_SHIFT 16 +#define VPFE_VDINT_VDINT0_SHIFT 16 +#define VPFE_VDINT_VDINT1_MASK 0xffff +#define VPFE_PPC_RAW 1 +#define VPFE_DCSUB_DEFAULT_VAL 0 +#define VPFE_CLAMP_DEFAULT_VAL 0 +#define VPFE_COLPTN_VAL 0xbb11bb11 +#define VPFE_TWO_BYTES_PER_PIXEL 2 +#define VPFE_INTERLACED_IMAGE_INVERT 0x4b6d +#define VPFE_INTERLACED_NO_IMAGE_INVERT 0x0249 +#define VPFE_PROGRESSIVE_IMAGE_INVERT 0x4000 +#define VPFE_PROGRESSIVE_NO_IMAGE_INVERT 0 +#define VPFE_INTERLACED_HEIGHT_SHIFT 1 +#define VPFE_SYN_MODE_INPMOD_SHIFT 12 +#define VPFE_SYN_MODE_INPMOD_MASK 3 +#define VPFE_SYN_MODE_8BITS (7 << 8) +#define VPFE_SYN_MODE_10BITS (6 << 8) +#define VPFE_SYN_MODE_11BITS (5 << 8) +#define VPFE_SYN_MODE_12BITS (4 << 8) +#define VPFE_SYN_MODE_13BITS (3 << 8) +#define VPFE_SYN_MODE_14BITS (2 << 8) +#define VPFE_SYN_MODE_15BITS (1 << 8) +#define VPFE_SYN_MODE_16BITS (0 << 8) +#define VPFE_SYN_FLDMODE_MASK 1 +#define VPFE_SYN_FLDMODE_SHIFT 7 +#define VPFE_REC656IF_BT656_EN 3 +#define VPFE_SYN_MODE_VD_POL_NEGATIVE (1 << 2) +#define VPFE_CCDCFG_Y8POS_SHIFT 11 +#define VPFE_CCDCFG_BW656_10BIT (1 << 5) +#define VPFE_SDOFST_FIELD_INTERLEAVED 0x249 +#define VPFE_NO_CULLING 0xffff00ff +#define VPFE_VDINT0 (1 << 0) +#define VPFE_VDINT1 (1 << 1) +#define VPFE_VDINT2 (1 << 2) +#define VPFE_DMA_CNTL_OVERFLOW (1 << 31) + +#define VPFE_CONFIG_PCLK_INV_SHIFT 0 +#define VPFE_CONFIG_PCLK_INV_MASK 1 +#define VPFE_CONFIG_PCLK_INV_NOT_INV 0 +#define VPFE_CONFIG_PCLK_INV_INV 1 +#define VPFE_CONFIG_EN_SHIFT 1 +#define VPFE_CONFIG_EN_MASK 2 +#define VPFE_CONFIG_EN_DISABLE 0 +#define VPFE_CONFIG_EN_ENABLE 1 +#define VPFE_CONFIG_ST_SHIFT 2 +#define VPFE_CONFIG_ST_MASK 4 +#define VPFE_CONFIG_ST_OCP_ACTIVE 0 +#define VPFE_CONFIG_ST_OCP_STANDBY 1 + +#endif /* AM437X_VPFE_REGS_H */ diff --git a/include/uapi/linux/Kbuild b/include/uapi/linux/Kbuild index ed39ac8..65495f0 100644 --- a/include/uapi/linux/Kbuild +++ b/include/uapi/linux/Kbuild @@ -34,6 +34,7 @@ header-y += adfs_fs.h header-y += affs_hardblocks.h header-y += agpgart.h header-y += aio_abi.h +header-y += am437x-vpfe.h header-y += apm_bios.h header-y += arcfb.h header-y += atalk.h diff --git a/include/uapi/linux/am437x-vpfe.h b/include/uapi/linux/am437x-vpfe.h new file mode 100644 index 0000000..9b03033f --- /dev/null +++ b/include/uapi/linux/am437x-vpfe.h @@ -0,0 +1,122 @@ +/* + * Copyright (C) 2013 - 2014 Texas Instruments, Inc. + * + * Benoit Parrot <bparrot@ti.com> + * Lad, Prabhakar <prabhakar.csengg@gmail.com> + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#ifndef AM437X_VPFE_USER_H +#define AM437X_VPFE_USER_H + +enum vpfe_ccdc_data_size { + VPFE_CCDC_DATA_16BITS = 0, + VPFE_CCDC_DATA_15BITS, + VPFE_CCDC_DATA_14BITS, + VPFE_CCDC_DATA_13BITS, + VPFE_CCDC_DATA_12BITS, + VPFE_CCDC_DATA_11BITS, + VPFE_CCDC_DATA_10BITS, + VPFE_CCDC_DATA_8BITS, +}; + +/* enum for No of pixel per line to be avg. in Black Clamping*/ +enum vpfe_ccdc_sample_length { + VPFE_CCDC_SAMPLE_1PIXELS = 0, + VPFE_CCDC_SAMPLE_2PIXELS, + VPFE_CCDC_SAMPLE_4PIXELS, + VPFE_CCDC_SAMPLE_8PIXELS, + VPFE_CCDC_SAMPLE_16PIXELS, +}; + +/* enum for No of lines in Black Clamping */ +enum vpfe_ccdc_sample_line { + VPFE_CCDC_SAMPLE_1LINES = 0, + VPFE_CCDC_SAMPLE_2LINES, + VPFE_CCDC_SAMPLE_4LINES, + VPFE_CCDC_SAMPLE_8LINES, + VPFE_CCDC_SAMPLE_16LINES, +}; + +/* enum for Alaw gamma width */ +enum vpfe_ccdc_gamma_width { + VPFE_CCDC_GAMMA_BITS_15_6 = 0, /* use bits 15-6 for gamma */ + VPFE_CCDC_GAMMA_BITS_14_5, + VPFE_CCDC_GAMMA_BITS_13_4, + VPFE_CCDC_GAMMA_BITS_12_3, + VPFE_CCDC_GAMMA_BITS_11_2, + VPFE_CCDC_GAMMA_BITS_10_1, + VPFE_CCDC_GAMMA_BITS_09_0, /* use bits 9-0 for gamma */ +}; + +/* structure for ALaw */ +struct vpfe_ccdc_a_law { + /* Enable/disable A-Law */ + unsigned char enable; + /* Gamma Width Input */ + enum vpfe_ccdc_gamma_width gamma_wd; +}; + +/* structure for Black Clamping */ +struct vpfe_ccdc_black_clamp { + unsigned char enable; + /* only if bClampEnable is TRUE */ + enum vpfe_ccdc_sample_length sample_pixel; + /* only if bClampEnable is TRUE */ + enum vpfe_ccdc_sample_line sample_ln; + /* only if bClampEnable is TRUE */ + unsigned short start_pixel; + /* only if bClampEnable is TRUE */ + unsigned short sgain; + /* only if bClampEnable is FALSE */ + unsigned short dc_sub; +}; + +/* structure for Black Level Compensation */ +struct vpfe_ccdc_black_compensation { + /* Constant value to subtract from Red component */ + char r; + /* Constant value to subtract from Gr component */ + char gr; + /* Constant value to subtract from Blue component */ + char b; + /* Constant value to subtract from Gb component */ + char gb; +}; + +/* Structure for CCDC configuration parameters for raw capture mode passed + * by application + */ +struct vpfe_ccdc_config_params_raw { + /* data size value from 8 to 16 bits */ + enum vpfe_ccdc_data_size data_sz; + /* Structure for Optional A-Law */ + struct vpfe_ccdc_a_law alaw; + /* Structure for Optical Black Clamp */ + struct vpfe_ccdc_black_clamp blk_clamp; + /* Structure for Black Compensation */ + struct vpfe_ccdc_black_compensation blk_comp; +}; + +/* + * Private IOCTL + * VIDIOC_AM437X_CCDC_CFG - Set CCDC configuration for raw capture + * This is an experimental ioctl that will change in future kernels. So use + * this ioctl with care ! + **/ +#define VIDIOC_AM437X_CCDC_CFG \ + _IOW('V', BASE_VIDIOC_PRIVATE + 1, void *) + +#endif /* AM437X_VPFE_USER_H */