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[media] media: mx2_camera: Fix mbus format handling

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Remove MX2_CAMERA_SWAP16 and MX2_CAMERA_PACK_DIR_MSB flags
so that the driver can negotiate with the attached sensor
whether the mbus format needs convertion from UYUV to YUYV
or not.

Signed-off-by: Javier Martin <javier.martin@vista-silicon.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Javier Martin 2012-03-26 09:17:48 -03:00 committed by Mauro Carvalho Chehab
parent 5ff203b5d8
commit d509835e32
2 changed files with 47 additions and 7 deletions
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2
arch/arm/plat-mxc/include/mach/mx2_cam.h
View File

@ -23,7 +23,6 @@
#ifndef __MACH_MX2_CAM_H_
#define __MACH_MX2_CAM_H_
#define MX2_CAMERA_SWAP16 (1 << 0)
#define MX2_CAMERA_EXT_VSYNC (1 << 1)
#define MX2_CAMERA_CCIR (1 << 2)
#define MX2_CAMERA_CCIR_INTERLACE (1 << 3)
@ -31,7 +30,6 @@
#define MX2_CAMERA_GATED_CLOCK (1 << 5)
#define MX2_CAMERA_INV_DATA (1 << 6)
#define MX2_CAMERA_PCLK_SAMPLE_RISING (1 << 7)
#define MX2_CAMERA_PACK_DIR_MSB (1 << 8)
/**
* struct mx2_camera_platform_data - optional platform data for mx2_camera

52
drivers/media/video/mx2_camera.c
View File

@ -344,6 +344,19 @@ static struct mx2_fmt_cfg mx27_emma_prp_table[] = {
PRP_INTR_CH2OVF,
}
},
{
.in_fmt = V4L2_MBUS_FMT_UYVY8_2X8,
.out_fmt = V4L2_PIX_FMT_YUV420,
.cfg = {
.channel = 2,
.in_fmt = PRP_CNTL_DATA_IN_YUV422,
.out_fmt = PRP_CNTL_CH2_OUT_YUV420,
.src_pixel = 0x22000888, /* YUV422 (YUYV) */
.irq_flags = PRP_INTR_RDERR | PRP_INTR_CH2WERR |
PRP_INTR_CH2FC | PRP_INTR_LBOVF |
PRP_INTR_CH2OVF,
}
},
};
static struct mx2_fmt_cfg *mx27_emma_prp_get_format(
@ -980,6 +993,7 @@ static int mx2_camera_set_bus_param(struct soc_camera_device *icd)
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct mx2_camera_dev *pcdev = ici->priv;
struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,};
const struct soc_camera_format_xlate *xlate;
unsigned long common_flags;
int ret;
int bytesperline;
@ -1024,14 +1038,31 @@ static int mx2_camera_set_bus_param(struct soc_camera_device *icd)
return ret;
}
xlate = soc_camera_xlate_by_fourcc(icd, pixfmt);
if (!xlate) {
dev_warn(icd->parent, "Format %x not found\n", pixfmt);
return -EINVAL;
}
if (xlate->code == V4L2_MBUS_FMT_YUYV8_2X8) {
csicr1 |= CSICR1_PACK_DIR;
csicr1 &= ~CSICR1_SWAP16_EN;
dev_dbg(icd->parent, "already yuyv format, don't convert\n");
} else if (xlate->code == V4L2_MBUS_FMT_UYVY8_2X8) {
csicr1 &= ~CSICR1_PACK_DIR;
csicr1 |= CSICR1_SWAP16_EN;
dev_dbg(icd->parent, "convert uyvy mbus format into yuyv\n");
} else {
dev_warn(icd->parent, "mbus format not supported\n");
return -EINVAL;
}
if (common_flags & V4L2_MBUS_PCLK_SAMPLE_RISING)
csicr1 |= CSICR1_REDGE;
if (common_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH)
csicr1 |= CSICR1_SOF_POL;
if (common_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH)
csicr1 |= CSICR1_HSYNC_POL;
if (pcdev->platform_flags & MX2_CAMERA_SWAP16)
csicr1 |= CSICR1_SWAP16_EN;
if (pcdev->platform_flags & MX2_CAMERA_EXT_VSYNC)
csicr1 |= CSICR1_EXT_VSYNC;
if (pcdev->platform_flags & MX2_CAMERA_CCIR)
@ -1042,8 +1073,6 @@ static int mx2_camera_set_bus_param(struct soc_camera_device *icd)
csicr1 |= CSICR1_GCLK_MODE;
if (pcdev->platform_flags & MX2_CAMERA_INV_DATA)
csicr1 |= CSICR1_INV_DATA;
if (pcdev->platform_flags & MX2_CAMERA_PACK_DIR_MSB)
csicr1 |= CSICR1_PACK_DIR;
pcdev->csicr1 = csicr1;
@ -1118,7 +1147,8 @@ static int mx2_camera_get_formats(struct soc_camera_device *icd,
return 0;
}
if (code == V4L2_MBUS_FMT_YUYV8_2X8) {
if (code == V4L2_MBUS_FMT_YUYV8_2X8 ||
code == V4L2_MBUS_FMT_UYVY8_2X8) {
formats++;
if (xlate) {
/*
@ -1134,6 +1164,18 @@ static int mx2_camera_get_formats(struct soc_camera_device *icd,
}
}
if (code == V4L2_MBUS_FMT_UYVY8_2X8) {
formats++;
if (xlate) {
xlate->host_fmt =
soc_mbus_get_fmtdesc(V4L2_MBUS_FMT_YUYV8_2X8);
xlate->code = code;
dev_dbg(dev, "Providing host format %s for sensor code %d\n",
xlate->host_fmt->name, code);
xlate++;
}
}
/* Generic pass-trough */
formats++;
if (xlate) {