diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0161-media-tc358743-Return-an-appropriate-colorspace-from.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0161-media-tc358743-Return-an-appropriate-colorspace-from.patch | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0161-media-tc358743-Return-an-appropriate-colorspace-from.patch b/target/linux/bcm27xx/patches-5.4/950-0161-media-tc358743-Return-an-appropriate-colorspace-from.patch new file mode 100644 index 0000000000..b5b9105f4f --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0161-media-tc358743-Return-an-appropriate-colorspace-from.patch @@ -0,0 +1,98 @@ +From 929b5ddd10bc0ca10a7b815e40ac35092c5b812f Mon Sep 17 00:00:00 2001 +From: Dave Stevenson <dave.stevenson@raspberrypi.org> +Date: Thu, 22 Nov 2018 17:31:06 +0000 +Subject: [PATCH] media: tc358743: Return an appropriate colorspace + from tc358743_set_fmt + +When calling tc358743_set_fmt, the code was calling tc358743_get_fmt +to choose a valid format. However that sets the colorspace +based on what was read back from the chip. When you set the format, +then the driver would choose and program the colorspace based +on the format code. + +The result was that if you called try or set format for UYVY +when the current format was RGB3 then you would get told sRGB, +and try RGB3 when current was UYVY and you would get told +SMPTE170M. + +The value programmed into the chip is determined by this driver, +therefore there is no need to read back the value. Return the +colorspace based on the format set/tried instead. + +Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org> +--- + drivers/media/i2c/tc358743.c | 40 +++++++++++++----------------------- + 1 file changed, 14 insertions(+), 26 deletions(-) + +--- a/drivers/media/i2c/tc358743.c ++++ b/drivers/media/i2c/tc358743.c +@@ -1690,12 +1690,23 @@ static int tc358743_enum_mbus_code(struc + return 0; + } + ++static u32 tc358743_g_colorspace(u32 code) ++{ ++ switch (code) { ++ case MEDIA_BUS_FMT_RGB888_1X24: ++ return V4L2_COLORSPACE_SRGB; ++ case MEDIA_BUS_FMT_UYVY8_1X16: ++ return V4L2_COLORSPACE_SMPTE170M; ++ default: ++ return 0; ++ } ++} ++ + static int tc358743_get_fmt(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_format *format) + { + struct tc358743_state *state = to_state(sd); +- u8 vi_rep = i2c_rd8(sd, VI_REP); + + if (format->pad != 0) + return -EINVAL; +@@ -1705,23 +1716,7 @@ static int tc358743_get_fmt(struct v4l2_ + format->format.height = state->timings.bt.height; + format->format.field = V4L2_FIELD_NONE; + +- switch (vi_rep & MASK_VOUT_COLOR_SEL) { +- case MASK_VOUT_COLOR_RGB_FULL: +- case MASK_VOUT_COLOR_RGB_LIMITED: +- format->format.colorspace = V4L2_COLORSPACE_SRGB; +- break; +- case MASK_VOUT_COLOR_601_YCBCR_LIMITED: +- case MASK_VOUT_COLOR_601_YCBCR_FULL: +- format->format.colorspace = V4L2_COLORSPACE_SMPTE170M; +- break; +- case MASK_VOUT_COLOR_709_YCBCR_FULL: +- case MASK_VOUT_COLOR_709_YCBCR_LIMITED: +- format->format.colorspace = V4L2_COLORSPACE_REC709; +- break; +- default: +- format->format.colorspace = 0; +- break; +- } ++ format->format.colorspace = tc358743_g_colorspace(format->format.code); + + return 0; + } +@@ -1736,18 +1731,11 @@ static int tc358743_set_fmt(struct v4l2_ + int ret = tc358743_get_fmt(sd, cfg, format); + + format->format.code = code; ++ format->format.colorspace = tc358743_g_colorspace(code); + + if (ret) + return ret; + +- switch (code) { +- case MEDIA_BUS_FMT_RGB888_1X24: +- case MEDIA_BUS_FMT_UYVY8_1X16: +- break; +- default: +- return -EINVAL; +- } +- + if (format->which == V4L2_SUBDEV_FORMAT_TRY) + return 0; + |