From: Dominic Curran <dcurran@xxxxxx> Subject: [OMAPZOOM][PATCH] Set the dcsub value for the OV3640 sensor. Explicitly set the dcsub (black level subtraction) value for the OV3640 sensor. For the OV3640 sensor the manufacturer recommends a BLC of 16 (for 10-bit data). This is a constant value that can be read from the sensors BLC9[3:0] register. The reg value (0x4) is for 8-bit data, so for 10-bit data this value should be left shifted by 2 (0x10). Signed-off-by: Dominic Curran <dcurran@xxxxxx> --- arch/arm/mach-omap2/board-3430sdp.c | 1 + arch/arm/mach-omap2/board-ldp.c | 1 + drivers/media/video/ov3640.h | 2 ++ 3 files changed, 4 insertions(+) Index: omapzoom04/arch/arm/mach-omap2/board-3430sdp.c =================================================================== --- omapzoom04.orig/arch/arm/mach-omap2/board-3430sdp.c +++ omapzoom04/arch/arm/mach-omap2/board-3430sdp.c @@ -756,6 +756,7 @@ static struct isp_interface_config ov364 .prev_sph = 2, .prev_slv = 1, .wenlog = ISPCCDC_CFG_WENLOG_AND, + .dcsub = OV3640_BLACK_LEVEL_10BIT, .u.csi.crc = 0x0, .u.csi.mode = 0x0, .u.csi.edge = 0x0, Index: omapzoom04/arch/arm/mach-omap2/board-ldp.c =================================================================== --- omapzoom04.orig/arch/arm/mach-omap2/board-ldp.c +++ omapzoom04/arch/arm/mach-omap2/board-ldp.c @@ -625,6 +625,7 @@ static struct isp_interface_config ov364 .prev_sph = 2, .prev_slv = 1, .wenlog = ISPCCDC_CFG_WENLOG_AND, + .dcsub = OV3640_BLACK_LEVEL_10BIT, .u.csi.crc = 0x0, .u.csi.mode = 0x0, .u.csi.edge = 0x0, Index: omapzoom04/drivers/media/video/ov3640.h =================================================================== --- omapzoom04.orig/drivers/media/video/ov3640.h +++ omapzoom04/drivers/media/video/ov3640.h @@ -62,6 +62,8 @@ #define OV3640_MAX_COLOR 2 #define OV3640_COLOR_STEP 1 +#define OV3640_BLACK_LEVEL_10BIT 16 + #define SENSOR_DETECTED 1 #define SENSOR_NOT_DETECTED 0 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
