HDMI controller drivers will need to figure out the RGB range they need to configure based on a mode and property values. Let's expose that in the HDMI connector state so drivers can just use that value. Reviewed-by: Dave Stevenson <dave.stevenson@xxxxxxxxxxxxxxx> Signed-off-by: Maxime Ripard <mripard@xxxxxxxxxx> --- drivers/gpu/drm/drm_atomic.c | 1 + drivers/gpu/drm/drm_atomic_state_helper.c | 29 +++++++++++++++++++++++++++++ include/drm/drm_connector.h | 6 ++++++ 3 files changed, 36 insertions(+) diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c index 3e57d98d8418..ec6c6beda5c9 100644 --- a/drivers/gpu/drm/drm_atomic.c +++ b/drivers/gpu/drm/drm_atomic.c @@ -1147,6 +1147,7 @@ static void drm_atomic_connector_print_state(struct drm_printer *p, connector->connector_type == DRM_MODE_CONNECTOR_HDMIB) { drm_printf(p, "\tbroadcast_rgb=%s\n", drm_hdmi_connector_get_broadcast_rgb_name(state->hdmi.broadcast_rgb)); + drm_printf(p, "\tis_full_range=%c\n", state->hdmi.is_full_range ? 'y' : 'n'); drm_printf(p, "\toutput_bpc=%u\n", state->hdmi.output_bpc); drm_printf(p, "\toutput_format=%s\n", drm_hdmi_connector_get_output_format_name(state->hdmi.output_format)); diff --git a/drivers/gpu/drm/drm_atomic_state_helper.c b/drivers/gpu/drm/drm_atomic_state_helper.c index 0e8fb653965a..e66272c0d006 100644 --- a/drivers/gpu/drm/drm_atomic_state_helper.c +++ b/drivers/gpu/drm/drm_atomic_state_helper.c @@ -664,6 +664,33 @@ connector_state_get_mode(const struct drm_connector_state *conn_state) return &crtc_state->mode; } +static bool hdmi_is_full_range(const struct drm_connector *connector, + const struct drm_connector_state *state) +{ + const struct drm_display_info *display = &connector->display_info; + const struct drm_display_mode *mode = + connector_state_get_mode(state); + + /* + * The Broadcast RGB property only applies to RGB format, and + * i915 just assumes limited range for YCbCr output, so let's + * just do the same. + */ + if (state->hdmi.output_format != HDMI_COLORSPACE_RGB) + return false; + + if (state->hdmi.broadcast_rgb == DRM_HDMI_BROADCAST_RGB_FULL) + return true; + + if (state->hdmi.broadcast_rgb == DRM_HDMI_BROADCAST_RGB_LIMITED) + return false; + + if (!display->is_hdmi) + return true; + + return drm_default_rgb_quant_range(mode) == HDMI_QUANTIZATION_RANGE_FULL ? true : false; +} + static bool sink_supports_format_bpc(const struct drm_connector *connector, const struct drm_display_info *info, @@ -910,6 +937,8 @@ int drm_atomic_helper_connector_hdmi_check(struct drm_connector *connector, connector_state_get_mode(new_state); int ret; + new_state->hdmi.is_full_range = hdmi_is_full_range(connector, new_state); + ret = hdmi_compute_config(connector, new_state, mode); if (ret) return ret; diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index bb6b6a36ade3..3eaf4d54364d 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -1070,6 +1070,12 @@ struct drm_connector_state { */ enum drm_hdmi_broadcast_rgb broadcast_rgb; + /** + * @is_full_range: Is the output supposed to use a full + * RGB Quantization Range or not? + */ + bool is_full_range; + /** * @output_bpc: Bits per color channel to output. */ -- 2.43.2