| Message ID | 20240326-kms-hdmi-connector-state-v11-19-c5680ffcf261@kernel.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drm/connector: Create HDMI Connector infrastructure | expand |
On Tue, Mar 26, 2024 at 04:40:23PM +0100, Maxime Ripard wrote: > 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@raspberrypi.com> > Signed-off-by: Maxime Ripard <mripard@kernel.org> > --- > drivers/gpu/drm/display/drm_hdmi_state_helper.c | 29 +++++++++++++++++++++++++ > drivers/gpu/drm/drm_atomic.c | 1 + > include/drm/drm_connector.h | 6 +++++ > 3 files changed, 36 insertions(+) > > diff --git a/drivers/gpu/drm/display/drm_hdmi_state_helper.c b/drivers/gpu/drm/display/drm_hdmi_state_helper.c > index c844cbeb675b..e693fe51abf5 100644 > --- a/drivers/gpu/drm/display/drm_hdmi_state_helper.c > +++ b/drivers/gpu/drm/display/drm_hdmi_state_helper.c > @@ -49,10 +49,37 @@ connector_state_get_mode(const struct drm_connector_state *conn_state) > return NULL; > > return &crtc_state->mode; > } > > +static bool hdmi_is_full_range(const struct drm_connector *connector, > + const struct drm_connector_state *conn_state) > +{ > + const struct drm_display_info *display = &connector->display_info; We call this 'info' everywhere else. > + const struct drm_display_mode *mode = > + connector_state_get_mode(conn_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 (conn_state->hdmi.output_format != HDMI_COLORSPACE_RGB) > + return false; > + > + if (conn_state->hdmi.broadcast_rgb == DRM_HDMI_BROADCAST_RGB_FULL) > + return true; > + > + if (conn_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; Pointless ?: I'd probably use a switch statement to make the whole thing a bit more clear. I was pondering if we could also use this from i915. But we'd have to turn the 'is_hdmi' part into a function argument since we derive that from the current crtc state rather than from the display info. > +} > + > static bool > sink_supports_format_bpc(const struct drm_connector *connector, > const struct drm_display_info *info, > const struct drm_display_mode *mode, > unsigned int format, unsigned int bpc) > @@ -307,10 +334,12 @@ int drm_atomic_helper_connector_hdmi_check(struct drm_connector *connector, > drm_atomic_get_new_connector_state(state, connector); > const struct drm_display_mode *mode = > connector_state_get_mode(new_conn_state); > int ret; > > + new_conn_state->hdmi.is_full_range = hdmi_is_full_range(connector, new_conn_state); > + > ret = hdmi_compute_config(connector, new_conn_state, mode); > if (ret) > return ret; > > if (old_conn_state->hdmi.broadcast_rgb != new_conn_state->hdmi.broadcast_rgb || > 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 > @@ -1145,10 +1145,11 @@ static void drm_atomic_connector_print_state(struct drm_printer *p, > > if (connector->connector_type == DRM_MODE_CONNECTOR_HDMIA || > 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)); > drm_printf(p, "\ttmds_char_rate=%llu\n", state->hdmi.tmds_char_rate); > } > diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h > index a40eaf3a8ce4..f5e960e89de3 100644 > --- a/include/drm/drm_connector.h > +++ b/include/drm/drm_connector.h > @@ -1068,10 +1068,16 @@ struct drm_connector_state { > * @broadcast_rgb: Connector property to pass the > * Broadcast RGB selection value. > */ > 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; I would say limited range is the exception so I would suggest flagging that instead. Feels a bit weird to flag the normal case. Maybe the name should also include 'rgb' to make it clear it only applies to RGB. > + > /** > * @output_bpc: Bits per color channel to output. > */ > unsigned int output_bpc; > > > -- > 2.44.0
diff --git a/drivers/gpu/drm/display/drm_hdmi_state_helper.c b/drivers/gpu/drm/display/drm_hdmi_state_helper.c index c844cbeb675b..e693fe51abf5 100644 --- a/drivers/gpu/drm/display/drm_hdmi_state_helper.c +++ b/drivers/gpu/drm/display/drm_hdmi_state_helper.c @@ -49,10 +49,37 @@ connector_state_get_mode(const struct drm_connector_state *conn_state) return NULL; return &crtc_state->mode; } +static bool hdmi_is_full_range(const struct drm_connector *connector, + const struct drm_connector_state *conn_state) +{ + const struct drm_display_info *display = &connector->display_info; + const struct drm_display_mode *mode = + connector_state_get_mode(conn_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 (conn_state->hdmi.output_format != HDMI_COLORSPACE_RGB) + return false; + + if (conn_state->hdmi.broadcast_rgb == DRM_HDMI_BROADCAST_RGB_FULL) + return true; + + if (conn_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, const struct drm_display_mode *mode, unsigned int format, unsigned int bpc) @@ -307,10 +334,12 @@ int drm_atomic_helper_connector_hdmi_check(struct drm_connector *connector, drm_atomic_get_new_connector_state(state, connector); const struct drm_display_mode *mode = connector_state_get_mode(new_conn_state); int ret; + new_conn_state->hdmi.is_full_range = hdmi_is_full_range(connector, new_conn_state); + ret = hdmi_compute_config(connector, new_conn_state, mode); if (ret) return ret; if (old_conn_state->hdmi.broadcast_rgb != new_conn_state->hdmi.broadcast_rgb || 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 @@ -1145,10 +1145,11 @@ static void drm_atomic_connector_print_state(struct drm_printer *p, if (connector->connector_type == DRM_MODE_CONNECTOR_HDMIA || 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)); drm_printf(p, "\ttmds_char_rate=%llu\n", state->hdmi.tmds_char_rate); } diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index a40eaf3a8ce4..f5e960e89de3 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -1068,10 +1068,16 @@ struct drm_connector_state { * @broadcast_rgb: Connector property to pass the * Broadcast RGB selection value. */ 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. */ unsigned int output_bpc;