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| author | Dave Stevenson <dave.stevenson@raspberrypi.com> | 2023-03-06 13:46:50 +0300 |
|---|---|---|
| committer | Maxime Ripard <maxime@cerno.tech> | 2023-04-25 10:33:16 +0300 |
| commit | b2751a4c5b5a7dcdfcea437f403c94a018cda5c9 (patch) | |
| tree | f74295a87322d48b522b6e44152c28ac7f17a03d /drivers/gpu/drm/vc4 | |
| parent | 8297ee3f2d1277ddaa6de14c9520ddd9a1afa610 (diff) | |
| download | linux-b2751a4c5b5a7dcdfcea437f403c94a018cda5c9.tar.xz | |
drm/vc4: hdmi: Add BT.2020 Support
Even though we report that we support the BT.2020 Colorspace, we were
always using the BT.709 conversion matrices. Let's add the BT.2020 ones.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://lore.kernel.org/r/20221207-rpi-hdmi-improvements-v3-9-bdd54f66884e@cerno.tech
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Diffstat (limited to 'drivers/gpu/drm/vc4')
| -rw-r--r-- | drivers/gpu/drm/vc4/vc4_hdmi.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c index 53c3d4f09296..6da41ea1250a 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -1306,6 +1306,37 @@ static const u16 vc5_hdmi_csc_full_rgb_to_yuv_bt709[2][3][4] = { }, }; +/* + * Conversion between Full Range RGB and YUV using the BT.2020 Colorspace + * + * Matrices are signed 2p13 fixed point, with signed 9p6 offsets + */ +static const u16 vc5_hdmi_csc_full_rgb_to_yuv_bt2020[2][3][4] = { + { + /* + * Full Range + * + * [ 0.262700 0.678000 0.059300 0 ] + * [ -0.139630 -0.360370 0.500000 128 ] + * [ 0.500000 -0.459786 -0.040214 128 ] + */ + { 0x0868, 0x15b2, 0x01e6, 0x0000 }, + { 0xfb89, 0xf479, 0x1000, 0x2000 }, + { 0x1000, 0xf14a, 0xfeb8, 0x2000 }, + }, + { + /* Limited Range + * + * [ 0.224732 0.580008 0.050729 16 ] + * [ -0.122176 -0.315324 0.437500 128 ] + * [ 0.437500 -0.402312 -0.035188 128 ] + */ + { 0x082f, 0x1012, 0x031f, 0x0400 }, + { 0xfb48, 0xf6ba, 0x0e00, 0x2000 }, + { 0x0e00, 0xf448, 0xfdba, 0x2000 }, + }, +}; + static void vc5_hdmi_set_csc_coeffs(struct vc4_hdmi *vc4_hdmi, const u16 coeffs[3][4]) { @@ -1351,6 +1382,13 @@ static const u16 case DRM_MODE_COLORIMETRY_RGB_WIDE_FIXED: case DRM_MODE_COLORIMETRY_RGB_WIDE_FLOAT: return vc5_hdmi_csc_full_rgb_to_yuv_bt709[limited]; + + case DRM_MODE_COLORIMETRY_BT2020_CYCC: + case DRM_MODE_COLORIMETRY_BT2020_YCC: + case DRM_MODE_COLORIMETRY_BT2020_RGB: + case DRM_MODE_COLORIMETRY_DCI_P3_RGB_D65: + case DRM_MODE_COLORIMETRY_DCI_P3_RGB_THEATER: + return vc5_hdmi_csc_full_rgb_to_yuv_bt2020[limited]; } } |