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Message-Id: <20240527-kms-hdmi-connector-state-v15-7-c5af16c3aae2@kernel.org>
Date: Mon, 27 May 2024 15:57:56 +0200
From: Maxime Ripard <mripard@...nel.org>
To: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Thomas Zimmermann <tzimmermann@...e.de>, David Airlie <airlied@...il.com>,
Daniel Vetter <daniel@...ll.ch>, Jonathan Corbet <corbet@....net>,
Sandy Huang <hjc@...k-chips.com>,
Heiko Stübner <heiko@...ech.de>,
Chen-Yu Tsai <wens@...e.org>, Jernej Skrabec <jernej.skrabec@...il.com>,
Samuel Holland <samuel@...lland.org>, Andy Yan <andy.yan@...k-chips.com>
Cc: Hans Verkuil <hverkuil@...all.nl>,
Sebastian Wick <sebastian.wick@...hat.com>,
Ville Syrjälä <ville.syrjala@...ux.intel.com>,
dri-devel@...ts.freedesktop.org, linux-arm-kernel@...ts.infradead.org,
linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-media@...r.kernel.org, linux-rockchip@...ts.infradead.org,
linux-sunxi@...ts.linux.dev, Maxime Ripard <mripard@...nel.org>,
Dave Stevenson <dave.stevenson@...pberrypi.com>,
Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Subject: [PATCH v15 07/29] drm/connector: hdmi: Add support for output
format
Just like BPC, we'll add support for automatic selection of the output
format for HDMI connectors.
Let's add the needed defaults and fields for now.
Reviewed-by: Dave Stevenson <dave.stevenson@...pberrypi.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Signed-off-by: Maxime Ripard <mripard@...nel.org>
---
drivers/gpu/drm/display/drm_hdmi_state_helper.c | 3 ++-
drivers/gpu/drm/drm_atomic.c | 2 ++
drivers/gpu/drm/drm_connector.c | 31 ++++++++++++++++++++++
drivers/gpu/drm/tests/drm_connector_test.c | 9 +++++++
drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c | 22 +++++++++++----
include/drm/drm_connector.h | 20 ++++++++++++++
6 files changed, 81 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/display/drm_hdmi_state_helper.c b/drivers/gpu/drm/display/drm_hdmi_state_helper.c
index 82293d93b5f8..f6cd0612ea2c 100644
--- a/drivers/gpu/drm/display/drm_hdmi_state_helper.c
+++ b/drivers/gpu/drm/display/drm_hdmi_state_helper.c
@@ -43,11 +43,12 @@ int drm_atomic_helper_connector_hdmi_check(struct drm_connector *connector,
struct drm_connector_state *old_conn_state =
drm_atomic_get_old_connector_state(state, connector);
struct drm_connector_state *new_conn_state =
drm_atomic_get_new_connector_state(state, connector);
- if (old_conn_state->hdmi.output_bpc != new_conn_state->hdmi.output_bpc) {
+ if (old_conn_state->hdmi.output_bpc != new_conn_state->hdmi.output_bpc ||
+ old_conn_state->hdmi.output_format != new_conn_state->hdmi.output_format) {
struct drm_crtc *crtc = new_conn_state->crtc;
struct drm_crtc_state *crtc_state;
crtc_state = drm_atomic_get_crtc_state(state, crtc);
if (IS_ERR(crtc_state))
diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index 4e11cfb4518b..8730137baa86 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -1144,10 +1144,12 @@ static void drm_atomic_connector_print_state(struct drm_printer *p,
drm_printf(p, "\tcolorspace=%s\n", drm_get_colorspace_name(state->colorspace));
if (connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
connector->connector_type == DRM_MODE_CONNECTOR_HDMIB) {
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));
}
if (connector->connector_type == DRM_MODE_CONNECTOR_WRITEBACK)
if (state->writeback_job && state->writeback_job->fb)
drm_printf(p, "\tfb=%d\n", state->writeback_job->fb->base.id);
diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
index da51a2bcb978..b629c8e990f4 100644
--- a/drivers/gpu/drm/drm_connector.c
+++ b/drivers/gpu/drm/drm_connector.c
@@ -457,10 +457,11 @@ EXPORT_SYMBOL(drmm_connector_init);
* @dev: DRM device
* @connector: A pointer to the HDMI connector to init
* @funcs: callbacks for this connector
* @connector_type: user visible type of the connector
* @ddc: optional pointer to the associated ddc adapter
+ * @supported_formats: Bitmask of @hdmi_colorspace listing supported output formats
* @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.
*
@@ -475,25 +476,31 @@ EXPORT_SYMBOL(drmm_connector_init);
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,
+ unsigned long supported_formats,
unsigned int max_bpc)
{
int ret;
if (!(connector_type == DRM_MODE_CONNECTOR_HDMIA ||
connector_type == DRM_MODE_CONNECTOR_HDMIB))
return -EINVAL;
+ if (!supported_formats || !(supported_formats & BIT(HDMI_COLORSPACE_RGB)))
+ 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;
+ connector->hdmi.supported_formats = supported_formats;
+
/*
* drm_connector_attach_max_bpc_property() requires the
* connector to have a state.
*/
if (connector->funcs->reset)
@@ -1199,10 +1206,34 @@ static const u32 dp_colorspaces =
BIT(DRM_MODE_COLORIMETRY_SYCC_601) |
BIT(DRM_MODE_COLORIMETRY_OPYCC_601) |
BIT(DRM_MODE_COLORIMETRY_BT2020_CYCC) |
BIT(DRM_MODE_COLORIMETRY_BT2020_YCC);
+static const char * const output_format_str[] = {
+ [HDMI_COLORSPACE_RGB] = "RGB",
+ [HDMI_COLORSPACE_YUV420] = "YUV 4:2:0",
+ [HDMI_COLORSPACE_YUV422] = "YUV 4:2:2",
+ [HDMI_COLORSPACE_YUV444] = "YUV 4:4:4",
+};
+
+/*
+ * drm_hdmi_connector_get_output_format_name() - Return a string for HDMI connector output format
+ * @fmt: Output format to compute name of
+ *
+ * Returns: the name of the output format, or NULL if the type is not
+ * valid.
+ */
+const char *
+drm_hdmi_connector_get_output_format_name(enum hdmi_colorspace fmt)
+{
+ if (fmt >= ARRAY_SIZE(output_format_str))
+ return NULL;
+
+ return output_format_str[fmt];
+}
+EXPORT_SYMBOL(drm_hdmi_connector_get_output_format_name);
+
/**
* DOC: standard connector properties
*
* DRM connectors have a few standardized properties:
*
diff --git a/drivers/gpu/drm/tests/drm_connector_test.c b/drivers/gpu/drm/tests/drm_connector_test.c
index 9465fa33f3b6..37e6efd46d7e 100644
--- a/drivers/gpu/drm/tests/drm_connector_test.c
+++ b/drivers/gpu/drm/tests/drm_connector_test.c
@@ -185,10 +185,11 @@ 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,
+ BIT(HDMI_COLORSPACE_RGB),
8);
KUNIT_EXPECT_EQ(test, ret, 0);
}
/*
@@ -202,10 +203,11 @@ 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,
+ BIT(HDMI_COLORSPACE_RGB),
8);
KUNIT_EXPECT_EQ(test, ret, 0);
}
/*
@@ -219,10 +221,11 @@ static void drm_test_connector_hdmi_init_bpc_invalid(struct kunit *test)
ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
&dummy_funcs,
DRM_MODE_CONNECTOR_HDMIA,
&priv->ddc,
+ BIT(HDMI_COLORSPACE_RGB),
9);
KUNIT_EXPECT_LT(test, ret, 0);
}
/*
@@ -236,10 +239,11 @@ static void drm_test_connector_hdmi_init_bpc_null(struct kunit *test)
ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
&dummy_funcs,
DRM_MODE_CONNECTOR_HDMIA,
&priv->ddc,
+ BIT(HDMI_COLORSPACE_RGB),
0);
KUNIT_EXPECT_LT(test, ret, 0);
}
/*
@@ -258,10 +262,11 @@ static void drm_test_connector_hdmi_init_bpc_8(struct kunit *test)
ret = drmm_connector_hdmi_init(&priv->drm, connector,
&dummy_funcs,
DRM_MODE_CONNECTOR_HDMIA,
&priv->ddc,
+ BIT(HDMI_COLORSPACE_RGB),
8);
KUNIT_EXPECT_EQ(test, ret, 0);
prop = connector->max_bpc_property;
KUNIT_ASSERT_NOT_NULL(test, prop);
@@ -296,10 +301,11 @@ static void drm_test_connector_hdmi_init_bpc_10(struct kunit *test)
ret = drmm_connector_hdmi_init(&priv->drm, connector,
&dummy_funcs,
DRM_MODE_CONNECTOR_HDMIA,
&priv->ddc,
+ BIT(HDMI_COLORSPACE_RGB),
10);
KUNIT_EXPECT_EQ(test, ret, 0);
prop = connector->max_bpc_property;
KUNIT_ASSERT_NOT_NULL(test, prop);
@@ -334,10 +340,11 @@ static void drm_test_connector_hdmi_init_bpc_12(struct kunit *test)
ret = drmm_connector_hdmi_init(&priv->drm, connector,
&dummy_funcs,
DRM_MODE_CONNECTOR_HDMIA,
&priv->ddc,
+ BIT(HDMI_COLORSPACE_RGB),
12);
KUNIT_EXPECT_EQ(test, ret, 0);
prop = connector->max_bpc_property;
KUNIT_ASSERT_NOT_NULL(test, prop);
@@ -368,10 +375,11 @@ 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,
+ BIT(HDMI_COLORSPACE_RGB),
8);
KUNIT_EXPECT_EQ(test, ret, 0);
}
static const unsigned int drm_connector_hdmi_init_type_valid_tests[] = {
@@ -400,10 +408,11 @@ 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,
+ BIT(HDMI_COLORSPACE_RGB),
8);
KUNIT_EXPECT_LT(test, ret, 0);
}
static const unsigned int drm_connector_hdmi_init_type_invalid_tests[] = {
diff --git a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
index 3ecae50ef47f..333c81b8cf4f 100644
--- a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
+++ b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
@@ -147,10 +147,11 @@ 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,
+ unsigned int formats,
unsigned int max_bpc)
{
struct drm_atomic_helper_connector_hdmi_priv *priv;
struct drm_connector *conn;
struct drm_encoder *enc;
@@ -190,10 +191,11 @@ drm_atomic_helper_connector_hdmi_init(struct kunit *test,
conn = &priv->connector;
ret = drmm_connector_hdmi_init(drm, conn,
&dummy_connector_funcs,
DRM_MODE_CONNECTOR_HDMIA,
NULL,
+ formats,
max_bpc);
KUNIT_ASSERT_EQ(test, ret, 0);
drm_connector_helper_add(conn, &dummy_connector_helper_funcs);
drm_connector_attach_encoder(conn, enc);
@@ -225,11 +227,13 @@ static void drm_test_check_output_bpc_crtc_mode_changed(struct kunit *test)
struct drm_connector *conn;
struct drm_device *drm;
struct drm_crtc *crtc;
int ret;
- priv = drm_atomic_helper_connector_hdmi_init(test, 10);
+ priv = drm_atomic_helper_connector_hdmi_init(test,
+ BIT(HDMI_COLORSPACE_RGB),
+ 10);
KUNIT_ASSERT_NOT_NULL(test, priv);
ctx = drm_kunit_helper_acquire_ctx_alloc(test);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
@@ -292,11 +296,13 @@ static void drm_test_check_output_bpc_crtc_mode_not_changed(struct kunit *test)
struct drm_connector *conn;
struct drm_device *drm;
struct drm_crtc *crtc;
int ret;
- priv = drm_atomic_helper_connector_hdmi_init(test, 10);
+ priv = drm_atomic_helper_connector_hdmi_init(test,
+ BIT(HDMI_COLORSPACE_RGB),
+ 10);
KUNIT_ASSERT_NOT_NULL(test, priv);
ctx = drm_kunit_helper_acquire_ctx_alloc(test);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
@@ -361,11 +367,13 @@ static void drm_test_check_bpc_8_value(struct kunit *test)
{
struct drm_atomic_helper_connector_hdmi_priv *priv;
struct drm_connector_state *conn_state;
struct drm_connector *conn;
- priv = drm_atomic_helper_connector_hdmi_init(test, 8);
+ priv = drm_atomic_helper_connector_hdmi_init(test,
+ BIT(HDMI_COLORSPACE_RGB),
+ 8);
KUNIT_ASSERT_NOT_NULL(test, priv);
conn = &priv->connector;
conn_state = conn->state;
KUNIT_EXPECT_EQ(test, conn_state->max_bpc, 8);
@@ -383,11 +391,13 @@ static void drm_test_check_bpc_10_value(struct kunit *test)
{
struct drm_atomic_helper_connector_hdmi_priv *priv;
struct drm_connector_state *conn_state;
struct drm_connector *conn;
- priv = drm_atomic_helper_connector_hdmi_init(test, 10);
+ priv = drm_atomic_helper_connector_hdmi_init(test,
+ BIT(HDMI_COLORSPACE_RGB),
+ 10);
KUNIT_ASSERT_NOT_NULL(test, priv);
conn = &priv->connector;
conn_state = conn->state;
KUNIT_EXPECT_EQ(test, conn_state->max_bpc, 10);
@@ -405,11 +415,13 @@ static void drm_test_check_bpc_12_value(struct kunit *test)
{
struct drm_atomic_helper_connector_hdmi_priv *priv;
struct drm_connector_state *conn_state;
struct drm_connector *conn;
- priv = drm_atomic_helper_connector_hdmi_init(test, 12);
+ priv = drm_atomic_helper_connector_hdmi_init(test,
+ BIT(HDMI_COLORSPACE_RGB),
+ 12);
KUNIT_ASSERT_NOT_NULL(test, priv);
conn = &priv->connector;
conn_state = conn->state;
KUNIT_EXPECT_EQ(test, conn_state->max_bpc, 12);
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index d4d2ae15bc1e..29883e6f8e50 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -366,10 +366,13 @@ enum drm_panel_orientation {
DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP,
DRM_MODE_PANEL_ORIENTATION_LEFT_UP,
DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
};
+const char *
+drm_hdmi_connector_get_output_format_name(enum hdmi_colorspace fmt);
+
/**
* struct drm_monitor_range_info - Panel's Monitor range in EDID for
* &drm_display_info
*
* This struct is used to store a frequency range supported by panel
@@ -1039,10 +1042,15 @@ struct drm_connector_state {
struct {
/**
* @output_bpc: Bits per color channel to output.
*/
unsigned int output_bpc;
+
+ /**
+ * @output_format: Pixel format to output in.
+ */
+ enum hdmi_colorspace output_format;
} hdmi;
};
/**
* struct drm_connector_funcs - control connectors on a given device
@@ -1900,10 +1908,21 @@ struct drm_connector {
*/
struct llist_node free_node;
/** @hdr_sink_metadata: HDR Metadata Information read from sink */
struct hdr_sink_metadata hdr_sink_metadata;
+
+ /**
+ * @hdmi: HDMI-related variable and properties.
+ */
+ struct {
+ /**
+ * @supported_formats: Bitmask of @hdmi_colorspace
+ * supported by the controller.
+ */
+ unsigned long supported_formats;
+ } hdmi;
};
#define obj_to_connector(x) container_of(x, struct drm_connector, base)
int drm_connector_init(struct drm_device *dev,
@@ -1923,10 +1942,11 @@ int drmm_connector_init(struct drm_device *dev,
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,
+ unsigned long supported_formats,
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);
int drm_connector_attach_encoder(struct drm_connector *connector,
--
2.45.0
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