From patchwork Tue Feb 7 15:11:52 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Manjunathappa, Prakash" X-Patchwork-Id: 139954 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from merlin.infradead.org (unknown [IPv6:2001:4978:20e::2]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 32308B71F6 for ; Wed, 8 Feb 2012 02:33:52 +1100 (EST) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1Run1d-0008Mh-1z; Tue, 07 Feb 2012 15:32:09 +0000 Received: from devils.ext.ti.com ([198.47.26.153]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1Run0S-0007r2-7z; Tue, 07 Feb 2012 15:30:58 +0000 Received: from dbdp20.itg.ti.com ([172.24.170.38]) by devils.ext.ti.com (8.13.7/8.13.7) with ESMTP id q17FUTej029548; Tue, 7 Feb 2012 09:30:29 -0600 Received: from DBDE71.ent.ti.com (localhost [127.0.0.1]) by dbdp20.itg.ti.com (8.13.8/8.13.8) with ESMTP id q17FUQ3Y000037; Tue, 7 Feb 2012 21:00:26 +0530 (IST) Received: from dbdp31.itg.ti.com (172.24.170.98) by DBDE71.ent.ti.com (172.24.170.149) with Microsoft SMTP Server id 14.1.323.3; Tue, 7 Feb 2012 21:00:26 +0530 Received: from ucmsshproxy.india.ext.ti.com (dbdp20.itg.ti.com [172.24.170.38]) by dbdp31.itg.ti.com (8.13.8/8.13.8) with SMTP id q17FUQKP006517; Tue, 7 Feb 2012 21:00:26 +0530 (IST) Received: from symphony.india.ext.ti.com (unknown [192.168.247.13]) by ucmsshproxy.india.ext.ti.com (Postfix) with ESMTP id 55B67158002; Tue, 7 Feb 2012 21:00:26 +0530 (IST) Received: from linux-psp-server.india.ext.ti.com (linux-psp-server [192.168.247.76]) by symphony.india.ext.ti.com (8.11.7p1+Sun/8.11.7) with ESMTP id q17FUPq28569; Tue, 7 Feb 2012 21:00:26 +0530 (IST) From: "Manjunathappa, Prakash" To: , , Subject: [PATCH v3 2/3] arm:davinci: Move emif driver to drivers/mfd from mach-davinci folder Date: Tue, 7 Feb 2012 20:41:52 +0530 Message-ID: <1328627513-30134-3-git-send-email-prakash.pm@ti.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1328627513-30134-1-git-send-email-prakash.pm@ti.com> References: <1328627513-30134-1-git-send-email-prakash.pm@ti.com> MIME-Version: 1.0 X-Spam-Note: CRM114 invocation failed X-Spam-Score: -6.9 (------) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-6.9 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at http://www.dnswl.org/, high trust [198.47.26.153 listed in list.dnswl.org] -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -0.0 SPF_PASS SPF: sender matches SPF record -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: davinci-linux-open-source@linux.davincidsp.com, Russell King , Samuel Ortiz , Sekhar Nori , "Manjunathappa, Prakash" , David Woodhouse X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-mtd-bounces@lists.infradead.org Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org Move aemif kernel module from arch/arm/mach-davinci/ to multi functional devices frame work. "davinci_aemif" MFD driver adds "davinci_nand" and "physmap-flash" slave devices. Signed-off-by: Manjunathappa, Prakash --- Since v2: Modified emif MFD driver to load multiple instance of NAND/NOR devices. Since v1: Patch generated using -M option. arch/arm/Kconfig | 1 + arch/arm/mach-davinci/Makefile | 2 +- drivers/mfd/Makefile | 1 + .../aemif.c => drivers/mfd/davinci_aemif.c | 75 +++++++++++++++++++- include/linux/mfd/davinci_aemif.h | 14 ++++ 5 files changed, 91 insertions(+), 2 deletions(-) rename arch/arm/mach-davinci/aemif.c => drivers/mfd/davinci_aemif.c (66%) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index a48aecc..09dcb94 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -934,6 +934,7 @@ config ARCH_DAVINCI select GENERIC_ALLOCATOR select GENERIC_IRQ_CHIP select ARCH_HAS_HOLES_MEMORYMODEL + select MFD_CORE help Support for TI's DaVinci platform. diff --git a/arch/arm/mach-davinci/Makefile b/arch/arm/mach-davinci/Makefile index 2db78bd..8bab47c 100644 --- a/arch/arm/mach-davinci/Makefile +++ b/arch/arm/mach-davinci/Makefile @@ -5,7 +5,7 @@ # Common objects obj-y := time.o clock.o serial.o psc.o \ - dma.o usb.o common.o sram.o aemif.o + dma.o usb.o common.o sram.o obj-$(CONFIG_DAVINCI_MUX) += mux.o diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index b953bab..54fc267 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -11,6 +11,7 @@ obj-$(CONFIG_HTC_EGPIO) += htc-egpio.o obj-$(CONFIG_HTC_PASIC3) += htc-pasic3.o obj-$(CONFIG_HTC_I2CPLD) += htc-i2cpld.o +obj-${CONFIG_ARCH_DAVINCI} += davinci_aemif.o obj-$(CONFIG_MFD_DAVINCI_VOICECODEC) += davinci_voicecodec.o obj-$(CONFIG_MFD_DM355EVM_MSP) += dm355evm_msp.o obj-$(CONFIG_MFD_TI_SSP) += ti-ssp.o diff --git a/arch/arm/mach-davinci/aemif.c b/drivers/mfd/davinci_aemif.c similarity index 66% rename from arch/arm/mach-davinci/aemif.c rename to drivers/mfd/davinci_aemif.c index b67c115..5fb490d 100644 --- a/arch/arm/mach-davinci/aemif.c +++ b/drivers/mfd/davinci_aemif.c @@ -14,8 +14,13 @@ #include #include #include - #include +#include +#include +#include + +static char *name[] = {"davinci_nand", "physmap-flash",}; +#define MAX ARRAY_SIZE(name) /* Timing value configuration */ @@ -131,3 +136,71 @@ int davinci_aemif_setup_timing(struct davinci_aemif_timing *t, return 0; } EXPORT_SYMBOL(davinci_aemif_setup_timing); + +static int __init davinci_aemif_probe(struct platform_device *pdev) +{ + struct davinci_aemif_devices *davinci_aemif_devices = + pdev->dev.platform_data; + struct platform_device *devices; + struct mfd_cell *cells; + int ret, i, j, count; + + devices = davinci_aemif_devices->devices; + + cells = kzalloc(sizeof(struct mfd_cell) * + davinci_aemif_devices->num_devices, GFP_KERNEL); + + for (j = 0, count = 0; j < MAX; j++) { + for (i = 0; i < davinci_aemif_devices->num_devices; i++) { + if (strcmp(devices[i].name, name[j])) + continue; + cells[count].name = name[j]; + cells[count].platform_data = + devices[i].dev.platform_data; + cells[count].pdata_size = + sizeof(struct davinci_nand_pdata); + cells[count].id = devices[i].id; + cells[count].resources = devices[i].resource; + cells[count].num_resources = devices[i].num_resources; + count++; + } + } + + ret = mfd_add_devices(&pdev->dev, 0, cells, + count, NULL, 0); + if (ret != 0) + dev_err(&pdev->dev, "fail to register client devices\n"); + + return 0; +} + +static int __devexit davinci_aemif_remove(struct platform_device *pdev) +{ + mfd_remove_devices(&pdev->dev); + return 0; +} + +static struct platform_driver davinci_aemif_driver = { + .driver = { + .name = "davinci_aemif", + .owner = THIS_MODULE, + }, + .remove = __devexit_p(davinci_aemif_remove), +}; + +static int __init davinci_aemif_init(void) +{ + return platform_driver_probe(&davinci_aemif_driver, + davinci_aemif_probe); +} +module_init(davinci_aemif_init); + +static void __exit davinci_aemif_exit(void) +{ + platform_driver_unregister(&davinci_aemif_driver); +} +module_exit(davinci_aemif_exit); + +MODULE_AUTHOR("Prakash Manjunathappa"); +MODULE_DESCRIPTION("Texas Instruments AEMIF Interface"); +MODULE_LICENSE("GPL"); diff --git a/include/linux/mfd/davinci_aemif.h b/include/linux/mfd/davinci_aemif.h index 05b2934..18650c3 100644 --- a/include/linux/mfd/davinci_aemif.h +++ b/include/linux/mfd/davinci_aemif.h @@ -10,6 +10,10 @@ #ifndef _MACH_DAVINCI_AEMIF_H #define _MACH_DAVINCI_AEMIF_H +#include +#include +#include + #define NRCSR_OFFSET 0x00 #define AWCCR_OFFSET 0x04 #define A1CR_OFFSET 0x10 @@ -18,6 +22,16 @@ #define ACR_EW_MASK BIT(30) #define ACR_SS_MASK BIT(31) +enum davinci_emif_cells { + DAVINCI_NAND_DEVICE_CELL, + DAVINCI_NOR_FLASH_CELL, +}; + +struct davinci_aemif_devices { + struct platform_device *devices; + unsigned int num_devices; +}; + /* All timings in nanoseconds */ struct davinci_aemif_timing { u8 wsetup;