[PATCH 1/3] media: vimc: Support multiple buscodes for each pixelformat

From: NÃcolas F. R. A. Prado
Date: Sun Feb 02 2020 - 10:50:47 EST

Change vimc_pix_map_list to allow multiple media bus codes to map to the
same pixelformat, making it possible to add media bus codes for which
there are no pixelformat.

Signed-off-by: NÃcolas F. R. A. Prado <nfraprado@xxxxxxxxxxxxxx>
---
drivers/media/platform/vimc/vimc-common.c | 68 ++++++++++++++---------
drivers/media/platform/vimc/vimc-common.h | 9 ++-
drivers/media/platform/vimc/vimc-scaler.c | 10 +++-
drivers/media/platform/vimc/vimc-sensor.c | 6 +-
4 files changed, 61 insertions(+), 32 deletions(-)

diff --git a/drivers/media/platform/vimc/vimc-common.c b/drivers/media/platform/vimc/vimc-common.c
index 16ce9f3b7c75..55797e5ab2b1 100644
--- a/drivers/media/platform/vimc/vimc-common.c
+++ b/drivers/media/platform/vimc/vimc-common.c
@@ -19,19 +19,19 @@ static const struct vimc_pix_map vimc_pix_map_list[] = {

/* RGB formats */
{
- .code = MEDIA_BUS_FMT_BGR888_1X24,
+ .code = {MEDIA_BUS_FMT_BGR888_1X24},
.pixelformat = V4L2_PIX_FMT_BGR24,
.bpp = 3,
.bayer = false,
},
{
- .code = MEDIA_BUS_FMT_RGB888_1X24,
+ .code = {MEDIA_BUS_FMT_RGB888_1X24},
.pixelformat = V4L2_PIX_FMT_RGB24,
.bpp = 3,
.bayer = false,
},
{
- .code = MEDIA_BUS_FMT_ARGB8888_1X32,
+ .code = {MEDIA_BUS_FMT_ARGB8888_1X32},
.pixelformat = V4L2_PIX_FMT_ARGB32,
.bpp = 4,
.bayer = false,
@@ -39,49 +39,49 @@ static const struct vimc_pix_map vimc_pix_map_list[] = {

/* Bayer formats */
{
- .code = MEDIA_BUS_FMT_SBGGR8_1X8,
+ .code = {MEDIA_BUS_FMT_SBGGR8_1X8},
.pixelformat = V4L2_PIX_FMT_SBGGR8,
.bpp = 1,
.bayer = true,
},
{
- .code = MEDIA_BUS_FMT_SGBRG8_1X8,
+ .code = {MEDIA_BUS_FMT_SGBRG8_1X8},
.pixelformat = V4L2_PIX_FMT_SGBRG8,
.bpp = 1,
.bayer = true,
},
{
- .code = MEDIA_BUS_FMT_SGRBG8_1X8,
+ .code = {MEDIA_BUS_FMT_SGRBG8_1X8},
.pixelformat = V4L2_PIX_FMT_SGRBG8,
.bpp = 1,
.bayer = true,
},
{
- .code = MEDIA_BUS_FMT_SRGGB8_1X8,
+ .code = {MEDIA_BUS_FMT_SRGGB8_1X8},
.pixelformat = V4L2_PIX_FMT_SRGGB8,
.bpp = 1,
.bayer = true,
},
{
- .code = MEDIA_BUS_FMT_SBGGR10_1X10,
+ .code = {MEDIA_BUS_FMT_SBGGR10_1X10},
.pixelformat = V4L2_PIX_FMT_SBGGR10,
.bpp = 2,
.bayer = true,
},
{
- .code = MEDIA_BUS_FMT_SGBRG10_1X10,
+ .code = {MEDIA_BUS_FMT_SGBRG10_1X10},
.pixelformat = V4L2_PIX_FMT_SGBRG10,
.bpp = 2,
.bayer = true,
},
{
- .code = MEDIA_BUS_FMT_SGRBG10_1X10,
+ .code = {MEDIA_BUS_FMT_SGRBG10_1X10},
.pixelformat = V4L2_PIX_FMT_SGRBG10,
.bpp = 2,
.bayer = true,
},
{
- .code = MEDIA_BUS_FMT_SRGGB10_1X10,
+ .code = {MEDIA_BUS_FMT_SRGGB10_1X10},
.pixelformat = V4L2_PIX_FMT_SRGGB10,
.bpp = 2,
.bayer = true,
@@ -89,25 +89,25 @@ static const struct vimc_pix_map vimc_pix_map_list[] = {

/* 10bit raw bayer a-law compressed to 8 bits */
{
- .code = MEDIA_BUS_FMT_SBGGR10_ALAW8_1X8,
+ .code = {MEDIA_BUS_FMT_SBGGR10_ALAW8_1X8},
.pixelformat = V4L2_PIX_FMT_SBGGR10ALAW8,
.bpp = 1,
.bayer = true,
},
{
- .code = MEDIA_BUS_FMT_SGBRG10_ALAW8_1X8,
+ .code = {MEDIA_BUS_FMT_SGBRG10_ALAW8_1X8},
.pixelformat = V4L2_PIX_FMT_SGBRG10ALAW8,
.bpp = 1,
.bayer = true,
},
{
- .code = MEDIA_BUS_FMT_SGRBG10_ALAW8_1X8,
+ .code = {MEDIA_BUS_FMT_SGRBG10_ALAW8_1X8},
.pixelformat = V4L2_PIX_FMT_SGRBG10ALAW8,
.bpp = 1,
.bayer = true,
},
{
- .code = MEDIA_BUS_FMT_SRGGB10_ALAW8_1X8,
+ .code = {MEDIA_BUS_FMT_SRGGB10_ALAW8_1X8},
.pixelformat = V4L2_PIX_FMT_SRGGB10ALAW8,
.bpp = 1,
.bayer = true,
@@ -115,49 +115,49 @@ static const struct vimc_pix_map vimc_pix_map_list[] = {

/* 10bit raw bayer DPCM compressed to 8 bits */
{
- .code = MEDIA_BUS_FMT_SBGGR10_DPCM8_1X8,
+ .code = {MEDIA_BUS_FMT_SBGGR10_DPCM8_1X8},
.pixelformat = V4L2_PIX_FMT_SBGGR10DPCM8,
.bpp = 1,
.bayer = true,
},
{
- .code = MEDIA_BUS_FMT_SGBRG10_DPCM8_1X8,
+ .code = {MEDIA_BUS_FMT_SGBRG10_DPCM8_1X8},
.pixelformat = V4L2_PIX_FMT_SGBRG10DPCM8,
.bpp = 1,
.bayer = true,
},
{
- .code = MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8,
+ .code = {MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8},
.pixelformat = V4L2_PIX_FMT_SGRBG10DPCM8,
.bpp = 1,
.bayer = true,
},
{
- .code = MEDIA_BUS_FMT_SRGGB10_DPCM8_1X8,
+ .code = {MEDIA_BUS_FMT_SRGGB10_DPCM8_1X8},
.pixelformat = V4L2_PIX_FMT_SRGGB10DPCM8,
.bpp = 1,
.bayer = true,
},
{
- .code = MEDIA_BUS_FMT_SBGGR12_1X12,
+ .code = {MEDIA_BUS_FMT_SBGGR12_1X12},
.pixelformat = V4L2_PIX_FMT_SBGGR12,
.bpp = 2,
.bayer = true,
},
{
- .code = MEDIA_BUS_FMT_SGBRG12_1X12,
+ .code = {MEDIA_BUS_FMT_SGBRG12_1X12},
.pixelformat = V4L2_PIX_FMT_SGBRG12,
.bpp = 2,
.bayer = true,
},
{
- .code = MEDIA_BUS_FMT_SGRBG12_1X12,
+ .code = {MEDIA_BUS_FMT_SGRBG12_1X12},
.pixelformat = V4L2_PIX_FMT_SGRBG12,
.bpp = 2,
.bayer = true,
},
{
- .code = MEDIA_BUS_FMT_SRGGB12_1X12,
+ .code = {MEDIA_BUS_FMT_SRGGB12_1X12},
.pixelformat = V4L2_PIX_FMT_SRGGB12,
.bpp = 2,
.bayer = true,
@@ -182,13 +182,29 @@ const struct vimc_pix_map *vimc_pix_map_by_index(unsigned int i)
return &vimc_pix_map_list[i];
}

+const u32 vimc_mbus_code_by_index(unsigned int i)
+{
+ unsigned int j, k;
+
+ for (j = 0; j < ARRAY_SIZE(vimc_pix_map_list); j++) {
+ for (k = 0; vimc_pix_map_list[j].code[k]; k++) {
+ if (!i)
+ return vimc_pix_map_list[j].code[k];
+ i--;
+ }
+ }
+ return 0;
+}
+
const struct vimc_pix_map *vimc_pix_map_by_code(u32 code)
{
- unsigned int i;
+ unsigned int i, j;

for (i = 0; i < ARRAY_SIZE(vimc_pix_map_list); i++) {
- if (vimc_pix_map_list[i].code == code)
- return &vimc_pix_map_list[i];
+ for (j = 0; j < ARRAY_SIZE(vimc_pix_map_list[i].code); j++) {
+ if (vimc_pix_map_list[i].code[j] == code)
+ return &vimc_pix_map_list[i];
+ }
}
return NULL;
}
diff --git a/drivers/media/platform/vimc/vimc-common.h b/drivers/media/platform/vimc/vimc-common.h
index 87eb8259c2a8..132a5889f1ea 100644
--- a/drivers/media/platform/vimc/vimc-common.h
+++ b/drivers/media/platform/vimc/vimc-common.h
@@ -69,7 +69,7 @@ do { \
* V4L2_PIX_FMT_* fourcc pixelformat and its bytes per pixel (bpp)
*/
struct vimc_pix_map {
- unsigned int code;
+ unsigned int code[3];
unsigned int bpp;
u32 pixelformat;
bool bayer;
@@ -171,6 +171,13 @@ void vimc_sen_rm(struct vimc_device *vimc, struct vimc_ent_device *ved);
*/
const struct vimc_pix_map *vimc_pix_map_by_index(unsigned int i);

+/**
+ * vimc_mbus_code_by_index - get mbus code by its index
+ *
+ * @i: index of the mbus code in vimc_pix_map_list
+ */
+const u32 vimc_mbus_code_by_index(unsigned int i);
+
/**
* vimc_pix_map_by_code - get vimc_pix_map struct by media bus code
*
diff --git a/drivers/media/platform/vimc/vimc-scaler.c b/drivers/media/platform/vimc/vimc-scaler.c
index e2e551bc3ded..d2ba0a2cfcc4 100644
--- a/drivers/media/platform/vimc/vimc-scaler.c
+++ b/drivers/media/platform/vimc/vimc-scaler.c
@@ -110,13 +110,19 @@ static int vimc_sca_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_mbus_code_enum *code)
{
- const struct vimc_pix_map *vpix = vimc_pix_map_by_index(code->index);
+ const u32 mbus_code = vimc_mbus_code_by_index(code->index);
+ const struct vimc_pix_map *vpix;
+
+ if (!mbus_code)
+ return -EINVAL;
+
+ vpix = vimc_pix_map_by_code(mbus_code);

/* We don't support bayer format */
if (!vpix || vpix->bayer)
return -EINVAL;

- code->code = vpix->code;
+ code->code = mbus_code;

return 0;
}
diff --git a/drivers/media/platform/vimc/vimc-sensor.c b/drivers/media/platform/vimc/vimc-sensor.c
index 32380f504591..9f4dd7fee9ab 100644
--- a/drivers/media/platform/vimc/vimc-sensor.c
+++ b/drivers/media/platform/vimc/vimc-sensor.c
@@ -52,12 +52,12 @@ static int vimc_sen_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_mbus_code_enum *code)
{
- const struct vimc_pix_map *vpix = vimc_pix_map_by_index(code->index);
+ const u32 mbus_code = vimc_mbus_code_by_index(code->index);

- if (!vpix)
+ if (!mbus_code)
return -EINVAL;

- code->code = vpix->code;
+ code->code = mbus_code;

return 0;
}
--
2.25.0