From patchwork Thu Jul 12 11:35:29 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [2/2,v2] i.MX27: Visstrim_M10: Add support for deinterlacing driver. Date: Thu, 12 Jul 2012 01:35:29 -0000 From: Javier Martin X-Patchwork-Id: 170641 Message-Id: <1342092929-31590-2-git-send-email-javier.martin@vista-silicon.com> To: linux-media@vger.kernel.org Cc: sakari.ailus@maxwell.research.nokia.com, kernel@pengutronix.de, mchehab@infradead.org, kyungmin.park@samsung.com, laurent.pinchart@ideasonboard.com, s.nawrocki@samsung.com, linux-arm-kernel@lists.infradead.org, Javier Martin Visstrim_M10 have a tvp5150 whose video output must be deinterlaced. The new mem2mem deinterlacing driver is very useful for that purpose. Signed-off-by: Javier Martin --- Changes since v1: - Removed commented out code. --- arch/arm/mach-imx/mach-imx27_visstrim_m10.c | 27 ++++++++++++++++++++++++++- 1 file changed, 26 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-imx/mach-imx27_visstrim_m10.c b/arch/arm/mach-imx/mach-imx27_visstrim_m10.c index 214e4ff..dbef59d 100644 --- a/arch/arm/mach-imx/mach-imx27_visstrim_m10.c +++ b/arch/arm/mach-imx/mach-imx27_visstrim_m10.c @@ -232,7 +232,7 @@ static void __init visstrim_camera_init(void) static void __init visstrim_reserve(void) { /* reserve 4 MiB for mx2-camera */ - mx2_camera_base = arm_memblock_steal(2 * MX2_CAMERA_BUF_SIZE, + mx2_camera_base = arm_memblock_steal(3 * MX2_CAMERA_BUF_SIZE, MX2_CAMERA_BUF_SIZE); } @@ -419,6 +419,30 @@ static void __init visstrim_coda_init(void) return; } +/* DMA deinterlace */ +static struct platform_device visstrim_deinterlace = { + .name = "m2m-deinterlace", + .id = 0, +}; + +static void __init visstrim_deinterlace_init(void) +{ + int ret = -ENOMEM; + struct platform_device *pdev = &visstrim_deinterlace; + int dma; + + ret = platform_device_register(pdev); + + dma = dma_declare_coherent_memory(&pdev->dev, + mx2_camera_base + 2 * MX2_CAMERA_BUF_SIZE, + mx2_camera_base + 2 * MX2_CAMERA_BUF_SIZE, + MX2_CAMERA_BUF_SIZE, + DMA_MEMORY_MAP | DMA_MEMORY_EXCLUSIVE); + if (!(dma & DMA_MEMORY_MAP)) + return; +} + + static void __init visstrim_m10_revision(void) { int exp_version = 0; @@ -481,6 +505,7 @@ static void __init visstrim_m10_board_init(void) platform_device_register_resndata(NULL, "soc-camera-pdrv", 0, NULL, 0, &iclink_tvp5150, sizeof(iclink_tvp5150)); gpio_led_register_device(0, &visstrim_m10_led_data); + visstrim_deinterlace_init(); visstrim_camera_init(); visstrim_coda_init(); }