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Subject[PATCH v5 2/3] media: rcar-vin: Add support for MEDIA_BUS_FMT_SRGGB8_1X8 format
Date
Add support for MEDIA_BUS_FMT_SRGGB8_1X8 format in rcar-vin by setting
format type to RAW8 in VNMC register and appropriately setting the bpp
and bytesperline to enable V4L2_PIX_FMT_SRGGB8.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
---
drivers/media/platform/rcar-vin/rcar-dma.c | 15 ++++++++++++++-
drivers/media/platform/rcar-vin/rcar-v4l2.c | 4 ++++
2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/rcar-vin/rcar-dma.c b/drivers/media/platform/rcar-vin/rcar-dma.c
index 2b26204910fd..a5dbb90c5210 100644
--- a/drivers/media/platform/rcar-vin/rcar-dma.c
+++ b/drivers/media/platform/rcar-vin/rcar-dma.c
@@ -85,6 +85,7 @@
#define VNMC_INF_YUV8_BT601 (1 << 16)
#define VNMC_INF_YUV10_BT656 (2 << 16)
#define VNMC_INF_YUV10_BT601 (3 << 16)
+#define VNMC_INF_RAW8 (4 << 16)
#define VNMC_INF_YUV16 (5 << 16)
#define VNMC_INF_RGB888 (6 << 16)
#define VNMC_VUP (1 << 10)
@@ -587,13 +588,19 @@ void rvin_crop_scale_comp(struct rvin_dev *vin)
rvin_write(vin, vin->crop.top, VNSLPRC_REG);
rvin_write(vin, vin->crop.top + vin->crop.height - 1, VNELPRC_REG);

-
/* TODO: Add support for the UDS scaler. */
if (vin->info->model != RCAR_GEN3)
rvin_crop_scale_comp_gen2(vin);

fmt = rvin_format_from_pixel(vin, vin->format.pixelformat);
stride = vin->format.bytesperline / fmt->bpp;
+
+ /* For RAW8 format bpp is 1, but the hardware process RAW8
+ * format in 2 pixel unit hence configure VNIS_REG as stride / 2.
+ */
+ if (vin->format.pixelformat == V4L2_PIX_FMT_SRGGB8)
+ stride /= 2;
+
rvin_write(vin, stride, VNIS_REG);
}

@@ -676,6 +683,9 @@ static int rvin_setup(struct rvin_dev *vin)

input_is_yuv = true;
break;
+ case MEDIA_BUS_FMT_SRGGB8_1X8:
+ vnmc |= VNMC_INF_RAW8;
+ break;
default:
break;
}
@@ -737,6 +747,9 @@ static int rvin_setup(struct rvin_dev *vin)
case V4L2_PIX_FMT_ABGR32:
dmr = VNDMR_A8BIT(vin->alpha) | VNDMR_EXRGB | VNDMR_DTMD_ARGB;
break;
+ case V4L2_PIX_FMT_SRGGB8:
+ dmr = 0;
+ break;
default:
vin_err(vin, "Invalid pixelformat (0x%x)\n",
vin->format.pixelformat);
diff --git a/drivers/media/platform/rcar-vin/rcar-v4l2.c b/drivers/media/platform/rcar-vin/rcar-v4l2.c
index d3b6a992b4a2..0e066bba747e 100644
--- a/drivers/media/platform/rcar-vin/rcar-v4l2.c
+++ b/drivers/media/platform/rcar-vin/rcar-v4l2.c
@@ -66,6 +66,10 @@ static const struct rvin_video_format rvin_formats[] = {
.fourcc = V4L2_PIX_FMT_ABGR32,
.bpp = 4,
},
+ {
+ .fourcc = V4L2_PIX_FMT_SRGGB8,
+ .bpp = 1,
+ },
};

const struct rvin_video_format *rvin_format_from_pixel(struct rvin_dev *vin,
--
2.17.1
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