[PATCH v1 05/35] drm/connector: Add TV standard property

From: Maxime Ripard
Date: Fri Jul 29 2022 - 12:46:33 EST

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The TV mode property has been around for a while now to select and get the
current TV mode output on an analog TV connector.

Despite that property name being generic, its content isn't and has been
driver-specific which makes it hard to build any generic behaviour on top
of it, both in kernel and user-space.

Let's create a new bitmask tv norm property, that can contain any of the
analog TV standards currently supported by kernel drivers. Each driver can
then pass in a bitmask of the modes it supports.

We'll then be able to phase out the older tv mode property.

Signed-off-by: Maxime Ripard <maxime@xxxxxxxxxx>

diff --git a/drivers/gpu/drm/drm_atomic_uapi.c b/drivers/gpu/drm/drm_atomic_uapi.c
index c06d0639d552..d7ff6c644c2f 100644
--- a/drivers/gpu/drm/drm_atomic_uapi.c
+++ b/drivers/gpu/drm/drm_atomic_uapi.c
@@ -700,6 +700,8 @@ static int drm_atomic_connector_set_property(struct drm_connector *connector,
state->tv.margins.bottom = val;
} else if (property == config->tv_mode_property) {
state->tv.mode = val;
+ } else if (property == config->tv_norm_property) {
+ state->tv.norm = val;
} else if (property == config->tv_brightness_property) {
state->tv.brightness = val;
} else if (property == config->tv_contrast_property) {
@@ -810,6 +812,8 @@ drm_atomic_connector_get_property(struct drm_connector *connector,
*val = state->tv.margins.bottom;
} else if (property == config->tv_mode_property) {
*val = state->tv.mode;
+ } else if (property == config->tv_norm_property) {
+ *val = state->tv.norm;
} else if (property == config->tv_brightness_property) {
*val = state->tv.brightness;
} else if (property == config->tv_contrast_property) {
diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
index e3142c8142b3..68a4e47f85a9 100644
--- a/drivers/gpu/drm/drm_connector.c
+++ b/drivers/gpu/drm/drm_connector.c
@@ -1637,6 +1637,7 @@ EXPORT_SYMBOL(drm_mode_create_tv_margin_properties);
/**
* drm_mode_create_tv_properties - create TV specific connector properties
* @dev: DRM device
+ * @supported_tv_norms: Bitmask of TV norms supported (See DRM_MODE_TV_NORM_*)
* @num_modes: number of different TV formats (modes) supported
* @modes: array of pointers to strings containing name of each format
*
@@ -1649,11 +1650,40 @@ EXPORT_SYMBOL(drm_mode_create_tv_margin_properties);
* 0 on success or a negative error code on failure.
*/
int drm_mode_create_tv_properties(struct drm_device *dev,
+ unsigned int supported_tv_norms,
unsigned int num_modes,
const char * const modes[])
{
+ static const struct drm_prop_enum_list tv_norm_values[] = {
+ { __builtin_ffs(DRM_MODE_TV_NORM_NTSC_443) - 1, "NTSC-443" },
+ { __builtin_ffs(DRM_MODE_TV_NORM_NTSC_J) - 1, "NTSC-J" },
+ { __builtin_ffs(DRM_MODE_TV_NORM_NTSC_M) - 1, "NTSC-M" },
+ { __builtin_ffs(DRM_MODE_TV_NORM_PAL_60) - 1, "PAL-60" },
+ { __builtin_ffs(DRM_MODE_TV_NORM_PAL_B) - 1, "PAL-B" },
+ { __builtin_ffs(DRM_MODE_TV_NORM_PAL_D) - 1, "PAL-D" },
+ { __builtin_ffs(DRM_MODE_TV_NORM_PAL_G) - 1, "PAL-G" },
+ { __builtin_ffs(DRM_MODE_TV_NORM_PAL_H) - 1, "PAL-H" },
+ { __builtin_ffs(DRM_MODE_TV_NORM_PAL_I) - 1, "PAL-I" },
+ { __builtin_ffs(DRM_MODE_TV_NORM_PAL_M) - 1, "PAL-M" },
+ { __builtin_ffs(DRM_MODE_TV_NORM_PAL_N) - 1, "PAL-N" },
+ { __builtin_ffs(DRM_MODE_TV_NORM_PAL_NC) - 1, "PAL-Nc" },
+ { __builtin_ffs(DRM_MODE_TV_NORM_SECAM_60) - 1, "SECAM-60" },
+ { __builtin_ffs(DRM_MODE_TV_NORM_SECAM_B) - 1, "SECAM-B" },
+ { __builtin_ffs(DRM_MODE_TV_NORM_SECAM_D) - 1, "SECAM-D" },
+ { __builtin_ffs(DRM_MODE_TV_NORM_SECAM_G) - 1, "SECAM-G" },
+ { __builtin_ffs(DRM_MODE_TV_NORM_SECAM_K) - 1, "SECAM-K" },
+ { __builtin_ffs(DRM_MODE_TV_NORM_SECAM_K1) - 1, "SECAM-K1" },
+ { __builtin_ffs(DRM_MODE_TV_NORM_SECAM_L) - 1, "SECAM-L" },
+ { __builtin_ffs(DRM_MODE_TV_NORM_HD480I) - 1, "hd480i" },
+ { __builtin_ffs(DRM_MODE_TV_NORM_HD480P) - 1, "hd480p" },
+ { __builtin_ffs(DRM_MODE_TV_NORM_HD576I) - 1, "hd576i" },
+ { __builtin_ffs(DRM_MODE_TV_NORM_HD576P) - 1, "hd576p" },
+ { __builtin_ffs(DRM_MODE_TV_NORM_HD720P) - 1, "hd720p" },
+ { __builtin_ffs(DRM_MODE_TV_NORM_HD1080I) - 1, "hd1080i" },
+ };
struct drm_property *tv_selector;
struct drm_property *tv_subconnector;
+ struct drm_property *tv_norm;
unsigned int i;

if (dev->mode_config.tv_select_subconnector_property)
@@ -1686,6 +1716,13 @@ int drm_mode_create_tv_properties(struct drm_device *dev,
if (drm_mode_create_tv_margin_properties(dev))
goto nomem;

+ tv_norm = drm_property_create_bitmask(dev, 0, "tv norm",
+ tv_norm_values, ARRAY_SIZE(tv_norm_values),
+ supported_tv_norms);
+ if (!tv_norm)
+ goto nomem;
+ dev->mode_config.tv_norm_property = tv_norm;
+
dev->mode_config.tv_mode_property =
drm_property_create(dev, DRM_MODE_PROP_ENUM,
"mode", num_modes);
diff --git a/drivers/gpu/drm/vc4/vc4_vec.c b/drivers/gpu/drm/vc4/vc4_vec.c
index 4a788c1c9058..457529e5d857 100644
--- a/drivers/gpu/drm/vc4/vc4_vec.c
+++ b/drivers/gpu/drm/vc4/vc4_vec.c
@@ -573,7 +573,9 @@ static int vc4_vec_bind(struct device *dev, struct device *master, void *data)
struct vc4_vec *vec;
int ret;

- ret = drm_mode_create_tv_properties(drm, ARRAY_SIZE(tv_mode_names),
+ ret = drm_mode_create_tv_properties(drm,
+ 0,
+ ARRAY_SIZE(tv_mode_names),
tv_mode_names);
if (ret)
return ret;
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index 1e9996b33cc8..78275e68ff66 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -143,6 +143,32 @@ enum subpixel_order {

};

+#define DRM_MODE_TV_NORM_NTSC_443 (1 << 0)
+#define DRM_MODE_TV_NORM_NTSC_J (1 << 1)
+#define DRM_MODE_TV_NORM_NTSC_M (1 << 2)
+#define DRM_MODE_TV_NORM_PAL_60 (1 << 3)
+#define DRM_MODE_TV_NORM_PAL_B (1 << 4)
+#define DRM_MODE_TV_NORM_PAL_D (1 << 5)
+#define DRM_MODE_TV_NORM_PAL_G (1 << 6)
+#define DRM_MODE_TV_NORM_PAL_H (1 << 7)
+#define DRM_MODE_TV_NORM_PAL_I (1 << 8)
+#define DRM_MODE_TV_NORM_PAL_M (1 << 9)
+#define DRM_MODE_TV_NORM_PAL_N (1 << 10)
+#define DRM_MODE_TV_NORM_PAL_NC (1 << 11)
+#define DRM_MODE_TV_NORM_SECAM_60 (1 << 12)
+#define DRM_MODE_TV_NORM_SECAM_B (1 << 13)
+#define DRM_MODE_TV_NORM_SECAM_D (1 << 14)
+#define DRM_MODE_TV_NORM_SECAM_G (1 << 15)
+#define DRM_MODE_TV_NORM_SECAM_K (1 << 16)
+#define DRM_MODE_TV_NORM_SECAM_K1 (1 << 17)
+#define DRM_MODE_TV_NORM_SECAM_L (1 << 18)
+#define DRM_MODE_TV_NORM_HD480I (1 << 19)
+#define DRM_MODE_TV_NORM_HD480P (1 << 20)
+#define DRM_MODE_TV_NORM_HD576I (1 << 21)
+#define DRM_MODE_TV_NORM_HD576P (1 << 22)
+#define DRM_MODE_TV_NORM_HD720P (1 << 23)
+#define DRM_MODE_TV_NORM_HD1080I (1 << 24)
+
/**
* struct drm_scrambling: sink's scrambling support.
*/
@@ -687,6 +713,7 @@ struct drm_tv_connector_state {
enum drm_mode_subconnector subconnector;
struct drm_connector_tv_margins margins;
unsigned int mode;
+ unsigned int norm;
unsigned int brightness;
unsigned int contrast;
unsigned int flicker_reduction;
@@ -1779,6 +1806,7 @@ void drm_connector_attach_dp_subconnector_property(struct drm_connector *connect

int drm_mode_create_tv_margin_properties(struct drm_device *dev);
int drm_mode_create_tv_properties(struct drm_device *dev,
+ unsigned int supported_tv_norms,
unsigned int num_modes,
const char * const modes[]);
void drm_connector_attach_tv_margin_properties(struct drm_connector *conn);
diff --git a/include/drm/drm_mode_config.h b/include/drm/drm_mode_config.h
index 6b5e01295348..d9e79def8b92 100644
--- a/include/drm/drm_mode_config.h
+++ b/include/drm/drm_mode_config.h
@@ -704,6 +704,12 @@ struct drm_mode_config {
*/
struct drm_property *dp_subconnector_property;

+ /**
+ * @tv_norm_property: Optional TV property to select the TV
+ * standard output on the connector.
+ */
+ struct drm_property *tv_norm_property;
+
/**
* @tv_subconnector_property: Optional TV property to differentiate
* between different TV connector types.

--
b4 0.10.0-dev-49460

Next message: Maxime Ripard: "[PATCH v1 15/35] drm/vc4: vec: Remove empty mode_fixup"
Previous message: Maxime Ripard: "[PATCH v1 12/35] drmi/modes: Properly generate a drm_display_mode from a named mode"
In reply to: Maxime Ripard: "[PATCH v1 12/35] drmi/modes: Properly generate a drm_display_mode from a named mode"
Next in thread: Maxime Ripard: "[PATCH v1 15/35] drm/vc4: vec: Remove empty mode_fixup"
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