[PATCH v6 13/36] drm/connector: hdmi: Add output BPC to the connector state
From: Maxime Ripard
Date: Mon Feb 12 2024 - 08:17:52 EST
We'll add automatic selection of the output BPC in a following patch,
but let's add it to the HDMI connector state already.
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 | 7 ++++++-
drivers/gpu/drm/drm_connector.c | 20 +++++++++++++++++-
.../gpu/drm/tests/drm_atomic_state_helper_test.c | 24 ++++++++++++----------
drivers/gpu/drm/tests/drm_connector_test.c | 15 +++++++++-----
include/drm/drm_connector.h | 13 +++++++++++-
6 files changed, 61 insertions(+), 19 deletions(-)
diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index 0c283964cee0..5fcdab90c793 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -1148,6 +1148,7 @@ static void drm_atomic_connector_print_state(struct drm_printer *p,
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);
}
if (connector->connector_type == DRM_MODE_CONNECTOR_WRITEBACK)
diff --git a/drivers/gpu/drm/drm_atomic_state_helper.c b/drivers/gpu/drm/drm_atomic_state_helper.c
index 08db9956840b..2025d053e54f 100644
--- a/drivers/gpu/drm/drm_atomic_state_helper.c
+++ b/drivers/gpu/drm/drm_atomic_state_helper.c
@@ -585,6 +585,10 @@ EXPORT_SYMBOL(drm_atomic_helper_connector_tv_reset);
void __drm_atomic_helper_connector_hdmi_reset(struct drm_connector *connector,
struct drm_connector_state *new_state)
{
+ unsigned int max_bpc = connector->max_bpc;
+
+ new_state->max_bpc = max_bpc;
+ new_state->max_requested_bpc = max_bpc;
new_state->hdmi.broadcast_rgb = DRM_HDMI_BROADCAST_RGB_AUTO;
}
EXPORT_SYMBOL(__drm_atomic_helper_connector_hdmi_reset);
@@ -701,7 +705,8 @@ int drm_atomic_helper_connector_hdmi_check(struct drm_connector *connector,
new_state->hdmi.is_full_range = hdmi_is_full_range(connector, new_state);
- if (old_state->hdmi.broadcast_rgb != new_state->hdmi.broadcast_rgb) {
+ if (old_state->hdmi.broadcast_rgb != new_state->hdmi.broadcast_rgb ||
+ old_state->hdmi.output_bpc != new_state->hdmi.output_bpc) {
struct drm_crtc *crtc = new_state->crtc;
struct drm_crtc_state *crtc_state;
diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
index 53abf213a045..ca39fd027e20 100644
--- a/drivers/gpu/drm/drm_connector.c
+++ b/drivers/gpu/drm/drm_connector.c
@@ -459,6 +459,7 @@ EXPORT_SYMBOL(drmm_connector_init);
* @funcs: callbacks for this connector
* @connector_type: user visible type of the connector
* @ddc: optional pointer to the associated ddc adapter
+ * @max_bpc: Maximum bits per char the HDMI connector supports
*
* Initialises a preallocated HDMI connector. Connectors can be
* subclassed as part of driver connector objects.
@@ -475,7 +476,8 @@ int drmm_connector_hdmi_init(struct drm_device *dev,
struct drm_connector *connector,
const struct drm_connector_funcs *funcs,
int connector_type,
- struct i2c_adapter *ddc)
+ struct i2c_adapter *ddc,
+ unsigned int max_bpc)
{
int ret;
@@ -483,10 +485,26 @@ int drmm_connector_hdmi_init(struct drm_device *dev,
connector_type == DRM_MODE_CONNECTOR_HDMIB))
return -EINVAL;
+ if (!(max_bpc == 8 || max_bpc == 10 || max_bpc == 12))
+ return -EINVAL;
+
ret = drmm_connector_init(dev, connector, funcs, connector_type, ddc);
if (ret)
return ret;
+ /*
+ * drm_connector_attach_max_bpc_property() requires the
+ * connector to have a state.
+ */
+ if (connector->funcs->reset)
+ connector->funcs->reset(connector);
+
+ drm_connector_attach_max_bpc_property(connector, 8, max_bpc);
+ connector->max_bpc = max_bpc;
+
+ if (max_bpc > 8)
+ drm_connector_attach_hdr_output_metadata_property(connector);
+
return 0;
}
EXPORT_SYMBOL(drmm_connector_hdmi_init);
diff --git a/drivers/gpu/drm/tests/drm_atomic_state_helper_test.c b/drivers/gpu/drm/tests/drm_atomic_state_helper_test.c
index 7750c3d214a4..64ba1f6256ba 100644
--- a/drivers/gpu/drm/tests/drm_atomic_state_helper_test.c
+++ b/drivers/gpu/drm/tests/drm_atomic_state_helper_test.c
@@ -146,7 +146,8 @@ static const struct drm_connector_funcs dummy_connector_funcs = {
static
struct drm_atomic_helper_connector_hdmi_priv *
-drm_atomic_helper_connector_hdmi_init(struct kunit *test)
+drm_atomic_helper_connector_hdmi_init(struct kunit *test,
+ unsigned int max_bpc)
{
struct drm_atomic_helper_connector_hdmi_priv *priv;
struct drm_connector *conn;
@@ -188,7 +189,8 @@ drm_atomic_helper_connector_hdmi_init(struct kunit *test)
ret = drmm_connector_hdmi_init(drm, conn,
&dummy_connector_funcs,
DRM_MODE_CONNECTOR_HDMIA,
- NULL);
+ NULL,
+ max_bpc);
KUNIT_ASSERT_EQ(test, ret, 0);
drm_connector_helper_add(conn, &dummy_connector_helper_funcs);
@@ -223,7 +225,7 @@ static void drm_test_check_broadcast_rgb_crtc_mode_changed(struct kunit *test)
struct drm_crtc *crtc;
int ret;
- priv = drm_atomic_helper_connector_hdmi_init(test);
+ priv = drm_atomic_helper_connector_hdmi_init(test, 8);
KUNIT_ASSERT_NOT_NULL(test, priv);
ctx = drm_kunit_helper_acquire_ctx_alloc(test);
@@ -284,7 +286,7 @@ static void drm_test_check_broadcast_rgb_crtc_mode_not_changed(struct kunit *tes
struct drm_crtc *crtc;
int ret;
- priv = drm_atomic_helper_connector_hdmi_init(test);
+ priv = drm_atomic_helper_connector_hdmi_init(test, 8);
KUNIT_ASSERT_NOT_NULL(test, priv);
ctx = drm_kunit_helper_acquire_ctx_alloc(test);
@@ -345,7 +347,7 @@ static void drm_test_check_broadcast_rgb_auto_cea_mode(struct kunit *test)
struct drm_crtc *crtc;
int ret;
- priv = drm_atomic_helper_connector_hdmi_init(test);
+ priv = drm_atomic_helper_connector_hdmi_init(test, 8);
KUNIT_ASSERT_NOT_NULL(test, priv);
conn = &priv->connector;
@@ -399,7 +401,7 @@ static void drm_test_check_broadcast_rgb_auto_cea_mode_vic_1(struct kunit *test)
struct drm_crtc *crtc;
int ret;
- priv = drm_atomic_helper_connector_hdmi_init(test);
+ priv = drm_atomic_helper_connector_hdmi_init(test, 8);
KUNIT_ASSERT_NOT_NULL(test, priv);
conn = &priv->connector;
@@ -452,7 +454,7 @@ static void drm_test_check_broadcast_rgb_full_cea_mode(struct kunit *test)
struct drm_crtc *crtc;
int ret;
- priv = drm_atomic_helper_connector_hdmi_init(test);
+ priv = drm_atomic_helper_connector_hdmi_init(test, 8);
KUNIT_ASSERT_NOT_NULL(test, priv);
conn = &priv->connector;
@@ -508,7 +510,7 @@ static void drm_test_check_broadcast_rgb_full_cea_mode_vic_1(struct kunit *test)
struct drm_crtc *crtc;
int ret;
- priv = drm_atomic_helper_connector_hdmi_init(test);
+ priv = drm_atomic_helper_connector_hdmi_init(test, 8);
KUNIT_ASSERT_NOT_NULL(test, priv);
conn = &priv->connector;
@@ -563,7 +565,7 @@ static void drm_test_check_broadcast_rgb_limited_cea_mode(struct kunit *test)
struct drm_crtc *crtc;
int ret;
- priv = drm_atomic_helper_connector_hdmi_init(test);
+ priv = drm_atomic_helper_connector_hdmi_init(test, 8);
KUNIT_ASSERT_NOT_NULL(test, priv);
conn = &priv->connector;
@@ -619,7 +621,7 @@ static void drm_test_check_broadcast_rgb_limited_cea_mode_vic_1(struct kunit *te
struct drm_crtc *crtc;
int ret;
- priv = drm_atomic_helper_connector_hdmi_init(test);
+ priv = drm_atomic_helper_connector_hdmi_init(test, 8);
KUNIT_ASSERT_NOT_NULL(test, priv);
conn = &priv->connector;
@@ -684,7 +686,7 @@ static void drm_test_check_broadcast_rgb_value(struct kunit *test)
struct drm_connector_state *conn_state;
struct drm_connector *conn;
- priv = drm_atomic_helper_connector_hdmi_init(test);
+ priv = drm_atomic_helper_connector_hdmi_init(test, 8);
KUNIT_ASSERT_NOT_NULL(test, priv);
conn = &priv->connector;
diff --git a/drivers/gpu/drm/tests/drm_connector_test.c b/drivers/gpu/drm/tests/drm_connector_test.c
index 41d33dea30af..96b19a5954b4 100644
--- a/drivers/gpu/drm/tests/drm_connector_test.c
+++ b/drivers/gpu/drm/tests/drm_connector_test.c
@@ -186,7 +186,8 @@ static void drm_test_connector_hdmi_init_valid(struct kunit *test)
ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
&dummy_funcs,
DRM_MODE_CONNECTOR_HDMIA,
- &priv->ddc);
+ &priv->ddc,
+ 8);
KUNIT_EXPECT_EQ(test, ret, 0);
}
@@ -202,7 +203,8 @@ static void drm_test_connector_hdmi_init_null_ddc(struct kunit *test)
ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
&dummy_funcs,
DRM_MODE_CONNECTOR_HDMIA,
- NULL);
+ NULL,
+ 8);
KUNIT_EXPECT_EQ(test, ret, 0);
}
@@ -219,7 +221,8 @@ static void drm_test_connector_hdmi_init_type_valid(struct kunit *test)
ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
&dummy_funcs,
connector_type,
- &priv->ddc);
+ &priv->ddc,
+ 8);
KUNIT_EXPECT_EQ(test, ret, 0);
}
@@ -250,7 +253,8 @@ static void drm_test_connector_hdmi_init_type_invalid(struct kunit *test)
ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
&dummy_funcs,
connector_type,
- &priv->ddc);
+ &priv->ddc,
+ 8);
KUNIT_EXPECT_LT(test, ret, 0);
}
@@ -447,7 +451,8 @@ static void drm_test_drm_connector_attach_broadcast_rgb_property_hdmi_connector(
ret = drmm_connector_hdmi_init(&priv->drm, connector,
&dummy_funcs,
DRM_MODE_CONNECTOR_HDMIA,
- &priv->ddc);
+ &priv->ddc,
+ 8);
KUNIT_EXPECT_EQ(test, ret, 0);
ret = drm_connector_attach_broadcast_rgb_property(connector);
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index 76eecd449fb8..1b1b6aed04ee 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -1072,6 +1072,11 @@ struct drm_connector_state {
* RGB Quantization Range or not?
*/
bool is_full_range;
+
+ /**
+ * @output_bpc: Bits per color channel to output.
+ */
+ unsigned int output_bpc;
} hdmi;
};
@@ -1717,6 +1722,11 @@ struct drm_connector {
*/
struct drm_property_blob *path_blob_ptr;
+ /**
+ * @max_bpc: Maximum bits per color channel the connector supports.
+ */
+ unsigned int max_bpc;
+
/**
* @max_bpc_property: Default connector property for the max bpc to be
* driven out of the connector.
@@ -1956,7 +1966,8 @@ int drmm_connector_hdmi_init(struct drm_device *dev,
struct drm_connector *connector,
const struct drm_connector_funcs *funcs,
int connector_type,
- struct i2c_adapter *ddc);
+ struct i2c_adapter *ddc,
+ unsigned int max_bpc);
void drm_connector_attach_edid_property(struct drm_connector *connector);
int drm_connector_register(struct drm_connector *connector);
void drm_connector_unregister(struct drm_connector *connector);
--
2.43.0