On Fri, 3 Feb 2023 02:07:44 +0000
Joshua Ashton <joshua@xxxxxxxxx> wrote:
> Userspace has no way of controlling or knowing the pixel encoding
> currently, so there is no way for it to ever get the right values here.
>
> When we do add pixel_encoding control from userspace,we can pick the
> right value for the colorimetry packet based on the
> pixel_encoding + the colorspace.
>
> Let's deprecate these values, and have one BT.2020 colorspace entry
> that userspace can use.
>
> Note: _CYCC was effectively 'removed' by this change, but that was not
> possible to be taken advantage of anyway, as there is currently no
> pixel_encoding control so it would not be possible to output
> linear YCbCr.
>
> Signed-off-by: Joshua Ashton <joshua@xxxxxxxxx>
>
> Cc: Pekka Paalanen <ppaalanen@xxxxxxxxx>
> Cc: Sebastian Wick <sebastian.wick@xxxxxxxxxx>
> Cc: Vitaly.Prosyak@xxxxxxx
> Cc: Uma Shankar <uma.shankar@xxxxxxxxx>
> Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> Cc: Joshua Ashton <joshua@xxxxxxxxx>
> Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
> Cc: amd-gfx@xxxxxxxxxxxxxxxxxxxxx
> ---
> drivers/gpu/drm/display/drm_hdmi_helper.c | 9 ++++-----
> drivers/gpu/drm/drm_connector.c | 12 ++++++------
> drivers/gpu/drm/i915/display/intel_dp.c | 20 +++++++++-----------
> include/drm/drm_connector.h | 19 ++++++++++---------
> 4 files changed, 29 insertions(+), 31 deletions(-)
>
> diff --git a/drivers/gpu/drm/display/drm_hdmi_helper.c b/drivers/gpu/drm/display/drm_hdmi_helper.c
> index 0264abe55278..c85860600395 100644
> --- a/drivers/gpu/drm/display/drm_hdmi_helper.c
> +++ b/drivers/gpu/drm/display/drm_hdmi_helper.c
> @@ -99,8 +99,7 @@ EXPORT_SYMBOL(drm_hdmi_infoframe_set_hdr_metadata);
> #define HDMI_COLORIMETRY_OPYCC_601 (C(3) | EC(3) | ACE(0))
> #define HDMI_COLORIMETRY_OPRGB (C(3) | EC(4) | ACE(0))
> #define HDMI_COLORIMETRY_BT2020_CYCC (C(3) | EC(5) | ACE(0))
> -#define HDMI_COLORIMETRY_BT2020_RGB (C(3) | EC(6) | ACE(0))
> -#define HDMI_COLORIMETRY_BT2020_YCC (C(3) | EC(6) | ACE(0))
> +#define HDMI_COLORIMETRY_BT2020 (C(3) | EC(6) | ACE(0))
> #define HDMI_COLORIMETRY_DCI_P3_RGB_D65 (C(3) | EC(7) | ACE(0))
> #define HDMI_COLORIMETRY_DCI_P3_RGB_THEATER (C(3) | EC(7) | ACE(1))
>
> @@ -113,9 +112,9 @@ static const u32 hdmi_colorimetry_val[] = {
> [DRM_MODE_COLORIMETRY_SYCC_601] = HDMI_COLORIMETRY_SYCC_601,
> [DRM_MODE_COLORIMETRY_OPYCC_601] = HDMI_COLORIMETRY_OPYCC_601,
> [DRM_MODE_COLORIMETRY_OPRGB] = HDMI_COLORIMETRY_OPRGB,
> - [DRM_MODE_COLORIMETRY_BT2020_CYCC] = HDMI_COLORIMETRY_BT2020_CYCC,
> - [DRM_MODE_COLORIMETRY_BT2020_RGB] = HDMI_COLORIMETRY_BT2020_RGB,
> - [DRM_MODE_COLORIMETRY_BT2020_YCC] = HDMI_COLORIMETRY_BT2020_YCC,
> + [DRM_MODE_COLORIMETRY_BT2020_DEPRECATED_1] = HDMI_COLORIMETRY_BT2020,
> + [DRM_MODE_COLORIMETRY_BT2020_DEPRECATED_2] = HDMI_COLORIMETRY_BT2020,
> + [DRM_MODE_COLORIMETRY_BT2020] = HDMI_COLORIMETRY_BT2020,
> };
>
> #undef C
> diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
> index 61c29ce74b03..58699ab15a6a 100644
> --- a/drivers/gpu/drm/drm_connector.c
> +++ b/drivers/gpu/drm/drm_connector.c
> @@ -1029,11 +1029,11 @@ static const struct drm_prop_enum_list hdmi_colorspaces[] = {
> /* Colorimetry based on IEC 61966-2-5 */
> { DRM_MODE_COLORIMETRY_OPRGB, "opRGB" },
> /* Colorimetry based on ITU-R BT.2020 */
> - { DRM_MODE_COLORIMETRY_BT2020_CYCC, "BT2020_CYCC" },
> + { DRM_MODE_COLORIMETRY_BT2020_DEPRECATED_1, "BT2020_DEPRECATED_1" },
> /* Colorimetry based on ITU-R BT.2020 */
> - { DRM_MODE_COLORIMETRY_BT2020_RGB, "BT2020_RGB" },
> + { DRM_MODE_COLORIMETRY_BT2020_DEPRECATED_2, "BT2020_DEPRECATED_2" },
> /* Colorimetry based on ITU-R BT.2020 */
> - { DRM_MODE_COLORIMETRY_BT2020_YCC, "BT2020_YCC" },
> + { DRM_MODE_COLORIMETRY_BT2020, "BT2020" },
> /* Added as part of Additional Colorimetry Extension in 861.G */
> { DRM_MODE_COLORIMETRY_DCI_P3_RGB_D65, "DCI-P3_RGB_D65" },
> { DRM_MODE_COLORIMETRY_DCI_P3_RGB_THEATER, "DCI-P3_RGB_Theater" },
> @@ -1054,7 +1054,7 @@ static const struct drm_prop_enum_list dp_colorspaces[] = {
> /* Colorimetry based on SMPTE RP 431-2 */
> { DRM_MODE_COLORIMETRY_DCI_P3_RGB_D65, "DCI-P3_RGB_D65" },
> /* Colorimetry based on ITU-R BT.2020 */
> - { DRM_MODE_COLORIMETRY_BT2020_RGB, "BT2020_RGB" },
> + { DRM_MODE_COLORIMETRY_BT2020, "BT2020" },
> { DRM_MODE_COLORIMETRY_BT601_YCC, "BT601_YCC" },
> { DRM_MODE_COLORIMETRY_BT709_YCC, "BT709_YCC" },
> /* Standard Definition Colorimetry based on IEC 61966-2-4 */
> @@ -1066,9 +1066,9 @@ static const struct drm_prop_enum_list dp_colorspaces[] = {
> /* Colorimetry based on IEC 61966-2-5 [33] */
> { DRM_MODE_COLORIMETRY_OPYCC_601, "opYCC_601" },
> /* Colorimetry based on ITU-R BT.2020 */
> - { DRM_MODE_COLORIMETRY_BT2020_CYCC, "BT2020_CYCC" },
> + { DRM_MODE_COLORIMETRY_BT2020_DEPRECATED_1, "BT2020_DEPRECATED_1" },
> /* Colorimetry based on ITU-R BT.2020 */
> - { DRM_MODE_COLORIMETRY_BT2020_YCC, "BT2020_YCC" },
> + { DRM_MODE_COLORIMETRY_BT2020_DEPRECATED_2, "BT2020_DEPRECATED_2" },
> };
Hi,
do these not rename the old uAPI strings?
Shouldn't the old strings be kept? It's much easier to scream "kernel
regression" when the expected string is no longer found than a subtle
change in behaviour that might not even be a change. ;-)
If there is not going to be a difference in behaviour, the enum could
expose e.g. all of "BT2020_RGB", "BT2020_CYCC" and "BT2020_YCC" as the
same integer value. If old userspace exists, it would not notice any
difference.
I mean, the *strings* are the uAPI, not the integers, right?
Thanks,
pq
>
> /**
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
> index c9be61d2348e..1aa5dedeec7b 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -1763,14 +1763,12 @@ static void intel_dp_compute_vsc_colorimetry(const struct intel_crtc_state *crtc
> case DRM_MODE_COLORIMETRY_OPYCC_601:
> vsc->colorimetry = DP_COLORIMETRY_OPYCC_601;
> break;
> - case DRM_MODE_COLORIMETRY_BT2020_CYCC:
> - vsc->colorimetry = DP_COLORIMETRY_BT2020_CYCC;
> - break;
> - case DRM_MODE_COLORIMETRY_BT2020_RGB:
> - vsc->colorimetry = DP_COLORIMETRY_BT2020_RGB;
> - break;
> - case DRM_MODE_COLORIMETRY_BT2020_YCC:
> - vsc->colorimetry = DP_COLORIMETRY_BT2020_YCC;
> + case DRM_MODE_COLORIMETRY_BT2020_DEPRECATED_1:
> + case DRM_MODE_COLORIMETRY_BT2020_DEPRECATED_2:
> + case DRM_MODE_COLORIMETRY_BT2020:
> + vsc->colorimetry = vsc->pixelformat == DP_PIXELFORMAT_RGB
> + ? DP_COLORIMETRY_BT2020_RGB
> + : DP_COLORIMETRY_BT2020_YCC;
> break;
> case DRM_MODE_COLORIMETRY_DCI_P3_RGB_D65:
> case DRM_MODE_COLORIMETRY_DCI_P3_RGB_THEATER:
> @@ -3043,9 +3041,9 @@ intel_dp_needs_vsc_sdp(const struct intel_crtc_state *crtc_state,
> switch (conn_state->colorspace) {
> case DRM_MODE_COLORIMETRY_SYCC_601:
> case DRM_MODE_COLORIMETRY_OPYCC_601:
> - case DRM_MODE_COLORIMETRY_BT2020_YCC:
> - case DRM_MODE_COLORIMETRY_BT2020_RGB:
> - case DRM_MODE_COLORIMETRY_BT2020_CYCC:
> + case DRM_MODE_COLORIMETRY_BT2020_DEPRECATED_1:
> + case DRM_MODE_COLORIMETRY_BT2020_DEPRECATED_2:
> + case DRM_MODE_COLORIMETRY_BT2020:
> return true;
> default:
> break;
> diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
> index eb4cc9076e16..42a3cf43168c 100644
> --- a/include/drm/drm_connector.h
> +++ b/include/drm/drm_connector.h
> @@ -390,12 +390,13 @@ enum drm_privacy_screen_status {
> * opYCC601 colorimetry format
> * @DRM_MODE_COLORIMETRY_OPRGB:
> * opRGB colorimetry format
> - * @DRM_MODE_COLORIMETRY_BT2020_CYCC:
> - * ITU-R BT.2020 Y'c C'bc C'rc (linear) colorimetry format
> - * @DRM_MODE_COLORIMETRY_BT2020_RGB:
> - * ITU-R BT.2020 R' G' B' colorimetry format
> - * @DRM_MODE_COLORIMETRY_BT2020_YCC:
> - * ITU-R BT.2020 Y' C'b C'r colorimetry format
> + * @DRM_MODE_COLORIMETRY_BT2020_DEPRECATED_1:
> + * @DRM_MODE_COLORIMETRY_BT2020_DEPRECATED_2:
> + * @DRM_MODE_COLORIMETRY_BT2020:
> + * ITU-R BT.2020 [R' G' B'] or
> + * ITU-R BT.2020 [Y' C'b C'r] or
> + * ITU-R BT.2020 [Y'c C'bc C'rc] (linear)
> + * colorimetry format
> * @DRM_MODE_COLORIMETRY_DCI_P3_RGB_D65:
> * DCI-P3 (SMPTE RP 431-2) colorimetry format
> * @DRM_MODE_COLORIMETRY_DCI_P3_RGB_THEATER:
> @@ -420,9 +421,9 @@ enum drm_colorspace {
> DRM_MODE_COLORIMETRY_SYCC_601,
> DRM_MODE_COLORIMETRY_OPYCC_601,
> DRM_MODE_COLORIMETRY_OPRGB,
> - DRM_MODE_COLORIMETRY_BT2020_CYCC,
> - DRM_MODE_COLORIMETRY_BT2020_RGB,
> - DRM_MODE_COLORIMETRY_BT2020_YCC,
> + DRM_MODE_COLORIMETRY_BT2020_DEPRECATED_1,
> + DRM_MODE_COLORIMETRY_BT2020_DEPRECATED_2,
> + DRM_MODE_COLORIMETRY_BT2020,
> /* Additional Colorimetry extension added as part of CTA 861.G */
> DRM_MODE_COLORIMETRY_DCI_P3_RGB_D65,
> DRM_MODE_COLORIMETRY_DCI_P3_RGB_THEATER,
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