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Date: Fri, 19 Mar 2021 13:49:22 +0100
From: Maxime Ripard <maxime@...no.tech>
To: dri-devel@...ts.freedesktop.org,
Daniel Vetter <daniel.vetter@...el.com>,
David Airlie <airlied@...ux.ie>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Thomas Zimmermann <tzimmermann@...e.de>,
Maxime Ripard <maxime@...no.tech>
Cc: Jernej Skrabec <jernej.skrabec@...l.net>,
Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
Dave Stevenson <dave.stevenson@...pberrypi.com>,
Phil Elwell <phil@...pberrypi.com>,
Tim Gover <tim.gover@...pberrypi.com>,
Dom Cobley <dom@...pberrypi.com>,
Christian König <christian.koenig@....com>,
Daniel Vetter <daniel@...ll.ch>, amd-gfx@...ts.freedesktop.org,
intel-gfx@...ts.freedesktop.org, Jonas Karlman <jonas@...boo.se>,
linux-kernel@...r.kernel.org,
Harry Wentland <harry.wentland@....com>,
Maxime Ripard <mripard@...nel.org>,
Jani Nikula <jani.nikula@...ux.intel.com>,
Alex Deucher <alexander.deucher@....com>,
Neil Armstrong <narmstrong@...libre.com>,
Eric Anholt <eric@...olt.net>,
Rodrigo Vivi <rodrigo.vivi@...el.com>,
Andrzej Hajda <a.hajda@...sung.com>,
Leo Li <sunpeng.li@....com>,
Laurent Pinchart <Laurent.pinchart@...asonboard.com>
Subject: [PATCH 3/3] drm/vc4: Add HDR metadata property to the VC5 HDMI connectors
From: Dave Stevenson <dave.stevenson@...pberrypi.com>
Now that we can export deeper colour depths, add in the signalling
for HDR metadata.
Signed-off-by: Dave Stevenson <dave.stevenson@...pberrypi.com>
Signed-off-by: Maxime Ripard <maxime@...no.tech>
---
drivers/gpu/drm/vc4/vc4_hdmi.c | 53 ++++++++++++++++++++++++++++++++++
drivers/gpu/drm/vc4/vc4_hdmi.h | 3 ++
2 files changed, 56 insertions(+)
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index eee9751009c2..c8846cf9dd24 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -214,6 +214,31 @@ static int vc4_hdmi_connector_get_modes(struct drm_connector *connector)
return ret;
}
+static int vc4_hdmi_connector_atomic_check(struct drm_connector *connector,
+ struct drm_atomic_state *state)
+{
+ struct drm_connector_state *old_state =
+ drm_atomic_get_old_connector_state(state, connector);
+ struct drm_connector_state *new_state =
+ drm_atomic_get_new_connector_state(state, connector);
+ struct drm_crtc *crtc = new_state->crtc;
+
+ if (!crtc)
+ return 0;
+
+ if (!drm_connector_atomic_hdr_metadata_equal(old_state, new_state)) {
+ struct drm_crtc_state *crtc_state;
+
+ crtc_state = drm_atomic_get_crtc_state(state, crtc);
+ if (IS_ERR(crtc_state))
+ return PTR_ERR(crtc_state);
+
+ crtc_state->mode_changed = true;
+ }
+
+ return 0;
+}
+
static void vc4_hdmi_connector_reset(struct drm_connector *connector)
{
struct vc4_hdmi_connector_state *old_state =
@@ -263,6 +288,7 @@ static const struct drm_connector_funcs vc4_hdmi_connector_funcs = {
static const struct drm_connector_helper_funcs vc4_hdmi_connector_helper_funcs = {
.get_modes = vc4_hdmi_connector_get_modes,
+ .atomic_check = vc4_hdmi_connector_atomic_check,
};
static int vc4_hdmi_connector_init(struct drm_device *dev,
@@ -299,6 +325,9 @@ static int vc4_hdmi_connector_init(struct drm_device *dev,
connector->interlace_allowed = 1;
connector->doublescan_allowed = 0;
+ if (vc4_hdmi->variant->supports_hdr)
+ drm_connector_attach_hdr_output_metadata_property(connector);
+
drm_connector_attach_encoder(connector, encoder);
return 0;
@@ -432,6 +461,25 @@ static void vc4_hdmi_set_audio_infoframe(struct drm_encoder *encoder)
vc4_hdmi_write_infoframe(encoder, &frame);
}
+static void vc4_hdmi_set_hdr_infoframe(struct drm_encoder *encoder)
+{
+ struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
+ struct drm_connector *connector = &vc4_hdmi->connector;
+ struct drm_connector_state *conn_state = connector->state;
+ union hdmi_infoframe frame;
+
+ if (!vc4_hdmi->variant->supports_hdr)
+ return;
+
+ if (!conn_state->hdr_output_metadata)
+ return;
+
+ if (drm_hdmi_infoframe_set_hdr_metadata(&frame.drm, conn_state))
+ return;
+
+ vc4_hdmi_write_infoframe(encoder, &frame);
+}
+
static void vc4_hdmi_set_infoframes(struct drm_encoder *encoder)
{
struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
@@ -444,6 +492,8 @@ static void vc4_hdmi_set_infoframes(struct drm_encoder *encoder)
*/
if (vc4_hdmi->audio.streaming)
vc4_hdmi_set_audio_infoframe(encoder);
+
+ vc4_hdmi_set_hdr_infoframe(encoder);
}
static void vc4_hdmi_encoder_post_crtc_disable(struct drm_encoder *encoder,
@@ -2101,6 +2151,7 @@ static const struct vc4_hdmi_variant bcm2835_variant = {
.phy_rng_enable = vc4_hdmi_phy_rng_enable,
.phy_rng_disable = vc4_hdmi_phy_rng_disable,
.channel_map = vc4_hdmi_channel_map,
+ .supports_hdr = false,
};
static const struct vc4_hdmi_variant bcm2711_hdmi0_variant = {
@@ -2128,6 +2179,7 @@ static const struct vc4_hdmi_variant bcm2711_hdmi0_variant = {
.phy_rng_enable = vc5_hdmi_phy_rng_enable,
.phy_rng_disable = vc5_hdmi_phy_rng_disable,
.channel_map = vc5_hdmi_channel_map,
+ .supports_hdr = true,
};
static const struct vc4_hdmi_variant bcm2711_hdmi1_variant = {
@@ -2155,6 +2207,7 @@ static const struct vc4_hdmi_variant bcm2711_hdmi1_variant = {
.phy_rng_enable = vc5_hdmi_phy_rng_enable,
.phy_rng_disable = vc5_hdmi_phy_rng_disable,
.channel_map = vc5_hdmi_channel_map,
+ .supports_hdr = true,
};
static const struct of_device_id vc4_hdmi_dt_match[] = {
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.h b/drivers/gpu/drm/vc4/vc4_hdmi.h
index 3cebd1fd00fc..060bcaefbeb5 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
@@ -99,6 +99,9 @@ struct vc4_hdmi_variant {
/* Callback to get channel map */
u32 (*channel_map)(struct vc4_hdmi *vc4_hdmi, u32 channel_mask);
+
+ /* Enables HDR metadata */
+ bool supports_hdr;
};
/* HDMI audio information */
--
2.30.2
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