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Subject[PATCH v2] i.MX6: Support 16-bit BT.1120 video input
Date
Confirmed to work with ADV7610 HDMI receiver.

Signed-off-by: Krzysztof Hałasa <khalasa@piap.pl>

diff --git a/drivers/gpu/ipu-v3/ipu-csi.c b/drivers/gpu/ipu-v3/ipu-csi.c
index 658c173bebdf..2893b68f1f7a 100644
--- a/drivers/gpu/ipu-v3/ipu-csi.c
+++ b/drivers/gpu/ipu-v3/ipu-csi.c
@@ -261,10 +261,24 @@ static int mbus_code_to_bus_cfg(struct ipu_csi_bus_config *cfg, u32 mbus_code,
cfg->data_width = IPU_CSI_DATA_WIDTH_8;
break;
case MEDIA_BUS_FMT_UYVY8_1X16:
+ if (mbus_type == V4L2_MBUS_BT656) {
+ cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_YUV422_UYVY;
+ cfg->data_width = IPU_CSI_DATA_WIDTH_8;
+ } else {
+ cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_BAYER;
+ cfg->data_width = IPU_CSI_DATA_WIDTH_16;
+ }
+ cfg->mipi_dt = MIPI_DT_YUV422;
+ break;
case MEDIA_BUS_FMT_YUYV8_1X16:
- cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_BAYER;
+ if (mbus_type == V4L2_MBUS_BT656) {
+ cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_YUV422_YUYV;
+ cfg->data_width = IPU_CSI_DATA_WIDTH_8;
+ } else {
+ cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_BAYER;
+ cfg->data_width = IPU_CSI_DATA_WIDTH_16;
+ }
cfg->mipi_dt = MIPI_DT_YUV422;
- cfg->data_width = IPU_CSI_DATA_WIDTH_16;
break;
case MEDIA_BUS_FMT_SBGGR8_1X8:
case MEDIA_BUS_FMT_SGBRG8_1X8:
@@ -352,7 +366,7 @@ static int fill_csi_bus_cfg(struct ipu_csi_bus_config *csicfg,
const struct v4l2_mbus_config *mbus_cfg,
const struct v4l2_mbus_framefmt *mbus_fmt)
{
- int ret;
+ int ret, is_bt1120;

memset(csicfg, 0, sizeof(*csicfg));

@@ -373,11 +387,18 @@ static int fill_csi_bus_cfg(struct ipu_csi_bus_config *csicfg,
break;
case V4L2_MBUS_BT656:
csicfg->ext_vsync = 0;
+ /* UYVY10_1X20 etc. should be supported as well */
+ is_bt1120 = mbus_fmt->code == MEDIA_BUS_FMT_UYVY8_1X16 ||
+ mbus_fmt->code == MEDIA_BUS_FMT_YUYV8_1X16;
if (V4L2_FIELD_HAS_BOTH(mbus_fmt->field) ||
mbus_fmt->field == V4L2_FIELD_ALTERNATE)
- csicfg->clk_mode = IPU_CSI_CLK_MODE_CCIR656_INTERLACED;
+ csicfg->clk_mode = is_bt1120 ?
+ IPU_CSI_CLK_MODE_CCIR1120_INTERLACED_SDR :
+ IPU_CSI_CLK_MODE_CCIR656_INTERLACED;
else
- csicfg->clk_mode = IPU_CSI_CLK_MODE_CCIR656_PROGRESSIVE;
+ csicfg->clk_mode = is_bt1120 ?
+ IPU_CSI_CLK_MODE_CCIR1120_PROGRESSIVE_SDR :
+ IPU_CSI_CLK_MODE_CCIR656_PROGRESSIVE;
break;
case V4L2_MBUS_CSI2_DPHY:
/*
diff --git a/drivers/staging/media/imx/imx-media-csi.c b/drivers/staging/media/imx/imx-media-csi.c
index 45f9d797b9da..ba93512f8c71 100644
--- a/drivers/staging/media/imx/imx-media-csi.c
+++ b/drivers/staging/media/imx/imx-media-csi.c
@@ -139,6 +139,8 @@ static inline bool is_parallel_16bit_bus(struct v4l2_fwnode_endpoint *ep)
* Check for conditions that require the IPU to handle the
* data internally as generic data, aka passthrough mode:
* - raw bayer media bus formats, or
+ * - BT.656 and BT.1120 (8/10-bit YUV422) data can always be processed
+ * on-the-fly
* - the CSI is receiving from a 16-bit parallel bus, or
* - the CSI is receiving from an 8-bit parallel bus and the incoming
* media bus format is other than UYVY8_2X8/YUYV8_2X8.
@@ -147,6 +149,9 @@ static inline bool requires_passthrough(struct v4l2_fwnode_endpoint *ep,
struct v4l2_mbus_framefmt *infmt,
const struct imx_media_pixfmt *incc)
{
+ if (ep->bus_type == V4L2_MBUS_BT656) // including BT.1120
+ return 0;
+
return incc->bayer || is_parallel_16bit_bus(ep) ||
(is_parallel_bus(ep) &&
infmt->code != MEDIA_BUS_FMT_UYVY8_2X8 &&
--
Krzysztof "Chris" Hałasa

Sieć Badawcza Łukasiewicz
Przemysłowy Instytut Automatyki i Pomiarów PIAP
Al. Jerozolimskie 202, 02-486 Warszawa

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