The video output format can freely be chosen to be 24-bit SRGB or 16-bit
YUV 4:2:2 in either SMPTE170M or REC709 color space. In all three modes
the output can be full or limited range.
Signed-off-by: Philipp Zabel <p.za...@pengutronix.de>
---
drivers/media/i2c/tc358743.c | 118 +++++++++++++++++++++++++++++++++++++++++--
1 file changed, 114 insertions(+), 4 deletions(-)
diff --git a/drivers/media/i2c/tc358743.c b/drivers/media/i2c/tc358743.c
index 64a97bbbd00a8..817741e20cc16 100644
--- a/drivers/media/i2c/tc358743.c
+++ b/drivers/media/i2c/tc358743.c
@@ -96,6 +96,7 @@ struct tc358743_state {
struct v4l2_dv_timings timings;
u32 mbus_fmt_code;
+ u8 vout_color_sel;
u8 csi_lanes_in_use;
struct gpio_desc *reset_gpio;
@@ -620,6 +621,7 @@ static void tc358743_set_ref_clk(struct v4l2_subdev *sd)
static void tc358743_set_csi_color_space(struct v4l2_subdev *sd)
{
struct tc358743_state *state = to_state(sd);
+ u8 vout_color_sel = state->vout_color_sel;
switch (state->mbus_fmt_code) {
case MEDIA_BUS_FMT_UYVY8_1X16:
@@ -627,8 +629,17 @@ static void tc358743_set_csi_color_space(struct
v4l2_subdev *sd)
i2c_wr8_and_or(sd, VOUT_SET2,
~(MASK_SEL422 | MASK_VOUT_422FIL_100) & 0xff,
MASK_SEL422 | MASK_VOUT_422FIL_100);
+ switch (vout_color_sel) {
+ case MASK_VOUT_COLOR_601_YCBCR_FULL:
+ case MASK_VOUT_COLOR_709_YCBCR_FULL:
+ case MASK_VOUT_COLOR_709_YCBCR_LIMITED:
+ break;
+ default:
+ vout_color_sel = MASK_VOUT_COLOR_601_YCBCR_LIMITED;
+ break;
+ }
i2c_wr8_and_or(sd, VI_REP, ~MASK_VOUT_COLOR_SEL & 0xff,
- MASK_VOUT_COLOR_601_YCBCR_LIMITED);
+ vout_color_sel);
mutex_lock(&state->confctl_mutex);
i2c_wr16_and_or(sd, CONFCTL, ~MASK_YCBCRFMT,
MASK_YCBCRFMT_422_8_BIT);
@@ -639,8 +650,10 @@ static void tc358743_set_csi_color_space(struct
v4l2_subdev *sd)
i2c_wr8_and_or(sd, VOUT_SET2,
~(MASK_SEL422 | MASK_VOUT_422FIL_100) & 0xff,
0x00);
+ if (vout_color_sel != MASK_VOUT_COLOR_RGB_LIMITED)
+ vout_color_sel = MASK_VOUT_COLOR_RGB_FULL;
i2c_wr8_and_or(sd, VI_REP, ~MASK_VOUT_COLOR_SEL & 0xff,
- MASK_VOUT_COLOR_RGB_FULL);
+ vout_color_sel);
mutex_lock(&state->confctl_mutex);
i2c_wr16_and_or(sd, CONFCTL, ~MASK_YCBCRFMT, 0);
mutex_unlock(&state->confctl_mutex);
@@ -1096,11 +1109,17 @@ static int tc358743_log_status(struct v4l2_subdev *sd)
uint8_t hdmi_sys_status = i2c_rd8(sd, SYS_STATUS);
uint16_t sysctl = i2c_rd16(sd, SYSCTL);
u8 vi_status3 = i2c_rd8(sd, VI_STATUS3);
+ u8 vi_rep = i2c_rd8(sd, VI_REP);
const int deep_color_mode[4] = { 8, 10, 12, 16 };
static const char * const input_color_space[] = {
"RGB", "YCbCr 601", "Adobe RGB", "YCbCr 709", "NA (4)",
"xvYCC 601", "NA(6)", "xvYCC 709", "NA(8)", "sYCC601",
"NA(10)", "NA(11)", "NA(12)", "Adobe YCC 601"};
+ static const char * const output_color_space[8] = {
+ "full range (0-255)", "limited range (16-235)",
+ "Bt.601 (0-255)", "Bt.601 (16-235)",
+ "Bt.709 (0-255)", "Bt.709 (16-235)",
+ "full to limited range", "limited to full range"};
v4l2_info(sd, "-----Chip status-----\n");
v4l2_info(sd, "Chip ID: 0x%02x\n",
@@ -1159,11 +1178,12 @@ static int tc358743_log_status(struct v4l2_subdev *sd)
v4l2_info(sd, "Stopped: %s\n",
(i2c_rd16(sd, CSI_STATUS) & MASK_S_HLT) ?
"yes" : "no");
- v4l2_info(sd, "Color space: %s\n",
+ v4l2_info(sd, "Color space: %s %s\n",
state->mbus_fmt_code == MEDIA_BUS_FMT_UYVY8_1X16 ?
"YCbCr 422 16-bit" :
state->mbus_fmt_code == MEDIA_BUS_FMT_RGB888_1X24 ?
- "RGB 888 24-bit" : "Unsupported");
+ "RGB 888 24-bit" : "Unsupported",
+ output_color_space[(vi_rep & MASK_VOUT_COLOR_SEL) >>
5]);
v4l2_info(sd, "-----%s status-----\n", is_hdmi(sd) ? "HDMI" : "DVI-D");
v4l2_info(sd, "HDCP encrypted content: %s\n",
@@ -1486,16 +1506,40 @@ static int tc358743_get_fmt(struct v4l2_subdev *sd,
switch (vi_rep & MASK_VOUT_COLOR_SEL) {
case MASK_VOUT_COLOR_RGB_FULL:
+ format->format.colorspace = V4L2_COLORSPACE_SRGB;
+ format->format.xfer_func = V4L2_XFER_FUNC_SRGB;
+ format->format.ycbcr_enc = V4L2_YCBCR_ENC_601;
+ format->format.quantization = V4L2_QUANTIZATION_FULL_RANGE;
+ break;
case MASK_VOUT_COLOR_RGB_LIMITED:
format->format.colorspace = V4L2_COLORSPACE_SRGB;
+ format->format.xfer_func = V4L2_XFER_FUNC_SRGB;
+ format->format.ycbcr_enc = V4L2_YCBCR_ENC_601;
+ format->format.quantization = V4L2_QUANTIZATION_LIM_RANGE;
break;
case MASK_VOUT_COLOR_601_YCBCR_LIMITED:
+ format->format.colorspace = V4L2_COLORSPACE_SMPTE170M;
+ format->format.xfer_func = V4L2_XFER_FUNC_709;
+ format->format.ycbcr_enc = V4L2_YCBCR_ENC_601;
+ format->format.quantization = V4L2_QUANTIZATION_LIM_RANGE;
+ break;
case MASK_VOUT_COLOR_601_YCBCR_FULL:
format->format.colorspace = V4L2_COLORSPACE_SMPTE170M;
+ format->format.xfer_func = V4L2_XFER_FUNC_709;
+ format->format.ycbcr_enc = V4L2_YCBCR_ENC_XV601;
+ format->format.quantization = V4L2_QUANTIZATION_FULL_RANGE;
break;
case MASK_VOUT_COLOR_709_YCBCR_FULL:
+ format->format.colorspace = V4L2_COLORSPACE_REC709;
+ format->format.xfer_func = V4L2_XFER_FUNC_709;
+ format->format.ycbcr_enc = V4L2_YCBCR_ENC_XV709;
+ format->format.quantization = V4L2_QUANTIZATION_FULL_RANGE;
+ break;
case MASK_VOUT_COLOR_709_YCBCR_LIMITED:
format->format.colorspace = V4L2_COLORSPACE_REC709;
+ format->format.xfer_func = V4L2_XFER_FUNC_709;
+ format->format.ycbcr_enc = V4L2_YCBCR_ENC_709;
+ format->format.quantization = V4L2_QUANTIZATION_LIM_RANGE;
break;
default:
format->format.colorspace = 0;
@@ -1512,7 +1556,11 @@ static int tc358743_set_fmt(struct v4l2_subdev *sd,
struct tc358743_state *state = to_state(sd);
u32 code = format->format.code; /* is overwritten by get_fmt */
+ enum v4l2_colorspace colorspace = format->format.colorspace;
+ enum v4l2_ycbcr_encoding ycbcr_enc = format->format.ycbcr_enc;
+ enum v4l2_quantization quantization = format->format.quantization;
int ret = tc358743_get_fmt(sd, cfg, format);
+ u8 vout_color_sel;
format->format.code = code;
@@ -1521,16 +1569,78 @@ static int tc358743_set_fmt(struct v4l2_subdev *sd,
switch (code) {
case MEDIA_BUS_FMT_RGB888_1X24:
+ colorspace = V4L2_COLORSPACE_SRGB;
+ break;
case MEDIA_BUS_FMT_UYVY8_1X16:
+ switch (colorspace) {
+ case V4L2_COLORSPACE_SMPTE170M:
+ case V4L2_COLORSPACE_REC709:
+ break;
+ default:
+ if (format->format.colorspace != V4L2_COLORSPACE_SRGB)
+ colorspace = format->format.colorspace;
+ else
+ colorspace = V4L2_COLORSPACE_SMPTE170M;
+ break;
+ }
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ format->format.colorspace = colorspace;
+
+ if (ycbcr_enc == V4L2_YCBCR_ENC_DEFAULT)
+ ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(colorspace);
+ if (quantization == V4L2_QUANTIZATION_DEFAULT)
+ quantization = V4L2_MAP_QUANTIZATION_DEFAULT(false, colorspace,
+ ycbcr_enc);
+
+ switch (colorspace) {
+ case V4L2_COLORSPACE_SRGB:
+ format->format.xfer_func = V4L2_XFER_FUNC_SRGB;
+ ycbcr_enc = V4L2_YCBCR_ENC_601;
+ if (quantization == V4L2_QUANTIZATION_LIM_RANGE) {
+ vout_color_sel = MASK_VOUT_COLOR_RGB_LIMITED;
+ } else {
+ quantization = V4L2_QUANTIZATION_FULL_RANGE;
+ vout_color_sel = MASK_VOUT_COLOR_RGB_FULL;
+ }
+ break;
+ case V4L2_COLORSPACE_SMPTE170M:
+ format->format.xfer_func = V4L2_XFER_FUNC_709;
+ if (quantization == V4L2_QUANTIZATION_FULL_RANGE) {
+ ycbcr_enc = V4L2_YCBCR_ENC_XV601;
+ vout_color_sel = MASK_VOUT_COLOR_601_YCBCR_FULL;
+ } else {
+ ycbcr_enc = V4L2_YCBCR_ENC_601;
+ quantization = V4L2_QUANTIZATION_LIM_RANGE;
+ vout_color_sel = MASK_VOUT_COLOR_601_YCBCR_LIMITED;
+ }
+ break;
+ case V4L2_COLORSPACE_REC709:
+ format->format.xfer_func = V4L2_XFER_FUNC_709;
+ if (quantization == V4L2_QUANTIZATION_FULL_RANGE) {
+ ycbcr_enc = V4L2_YCBCR_ENC_XV709;
+ vout_color_sel = MASK_VOUT_COLOR_709_YCBCR_FULL;
+ } else {
+ ycbcr_enc = V4L2_YCBCR_ENC_709;
+ quantization = V4L2_QUANTIZATION_LIM_RANGE;
+ vout_color_sel = MASK_VOUT_COLOR_709_YCBCR_LIMITED;
+ }
break;
default:
return -EINVAL;
}
+ format->format.ycbcr_enc = ycbcr_enc;
+ format->format.quantization = quantization;
+
if (format->which == V4L2_SUBDEV_FORMAT_TRY)
return 0;
state->mbus_fmt_code = format->format.code;
+ state->vout_color_sel = vout_color_sel;
enable_stream(sd, false);
tc358743_set_pll(sd);
--
2.11.0
--
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