On Tue, May 08, 2018 at 10:44:56AM +0300, StanLis wrote:
> From: Stanislav Lisovskiy <stanislav.lisovskiy@xxxxxxxxx>
>
> Added content_type property to drm_connector_state
> in order to properly handle external HDMI TV content-type setting.
>
> v2:
> * Moved helper function which attaches content type property
> to the drm core, as was suggested.
> Removed redundant connector state initialization.
>
> v3:
> * Removed caps in drm_content_type_enum_list.
> After some discussion it turned out that HDMI Spec 1.4
> was wrongly assuming that IT Content(itc) bit doesn't affect
> Content type states, however itc bit needs to be manupulated
> as well. In order to not expose additional property for itc,
> for sake of simplicity it was decided to bind those together
> in same "content type" property.
>
> v4:
> * Added it_content checking in intel_digital_connector_atomic_check.
> Fixed documentation for new content type enum.
>
> v5:
> * Moved patch revision's description to commit messages.
>
> v6:
> * Minor naming fix for the content type enumeration string.
>
> v7:
> * Fix parameter name for documentation and parameter alignment
> in order not to get warning. Added Content Type description to
> new HDMI connector properties section.
>
> v8:
> * Thrown away unneeded numbers from HDMI content-type property
> description. Switch to strings desription instead of plain
> definitions.
>
> v9:
> * Moved away hdmi specific content-type enum from
> drm_connector_state. Content type property should probably not
> be bound to any specific connector interface in
> drm_connector_state.
> Same probably should be done to hdmi_picture_aspect_ration enum
> which is also contained in drm_connector_state. Added special
> helper function to get derive hdmi specific relevant infoframe
> fields.
>
> v10:
> * Added usage description to HDMI properties kernel doc.
>
> Acked-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
> Acked-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
> Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy@xxxxxxxxx>
> ---
> Documentation/gpu/drm-kms.rst | 6 +++
> Documentation/gpu/kms-properties.csv | 1 +
> drivers/gpu/drm/drm_atomic.c | 4 ++
> drivers/gpu/drm/drm_connector.c | 80 ++++++++++++++++++++++++++++
> drivers/gpu/drm/drm_edid.c | 55 +++++++++++++++++++
> include/drm/drm_connector.h | 12 +++++
> include/drm/drm_edid.h | 6 +++
> include/drm/drm_mode_config.h | 5 ++
> include/uapi/drm/drm_mode.h | 7 +++
> 9 files changed, 176 insertions(+)
>
> diff --git a/Documentation/gpu/drm-kms.rst b/Documentation/gpu/drm-kms.rst
> index 1dffd1ac4cd4..e233c2626bd0 100644
> --- a/Documentation/gpu/drm-kms.rst
> +++ b/Documentation/gpu/drm-kms.rst
> @@ -517,6 +517,12 @@ Standard Connector Properties
> .. kernel-doc:: drivers/gpu/drm/drm_connector.c
> :doc: standard connector properties
>
> +HDMI Specific Connector Properties
> +-----------------------------
> +
> +.. kernel-doc:: drivers/gpu/drm/drm_connector.c
> + :doc: HDMI connector properties
> +
> Plane Composition Properties
> ----------------------------
>
> diff --git a/Documentation/gpu/kms-properties.csv b/Documentation/gpu/kms-properties.csv
> index 07ed22ea3bd6..bfde04eddd14 100644
> --- a/Documentation/gpu/kms-properties.csv
> +++ b/Documentation/gpu/kms-properties.csv
> @@ -17,6 +17,7 @@ Owner Module/Drivers,Group,Property Name,Type,Property Values,Object attached,De
> ,Virtual GPU,“suggested X”,RANGE,"Min=0, Max=0xffffffff",Connector,property to suggest an X offset for a connector
> ,,“suggested Y”,RANGE,"Min=0, Max=0xffffffff",Connector,property to suggest an Y offset for a connector
> ,Optional,"""aspect ratio""",ENUM,"{ ""None"", ""4:3"", ""16:9"" }",Connector,TDB
> +,Optional,"""content type""",ENUM,"{ ""No Data"", ""Graphics"", ""Photo"", ""Cinema"", ""Game"" }",Connector,TBD
> i915,Generic,"""Broadcast RGB""",ENUM,"{ ""Automatic"", ""Full"", ""Limited 16:235"" }",Connector,"When this property is set to Limited 16:235 and CTM is set, the hardware will be programmed with the result of the multiplication of CTM by the limited range matrix to ensure the pixels normaly in the range 0..1.0 are remapped to the range 16/255..235/255."
> ,,“audio”,ENUM,"{ ""force-dvi"", ""off"", ""auto"", ""on"" }",Connector,TBD
> ,SDVO-TV,“mode”,ENUM,"{ ""NTSC_M"", ""NTSC_J"", ""NTSC_443"", ""PAL_B"" } etc.",Connector,TBD
> diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
> index 3d9ae057a6cd..6c1e1e774517 100644
> --- a/drivers/gpu/drm/drm_atomic.c
> +++ b/drivers/gpu/drm/drm_atomic.c
> @@ -1270,6 +1270,8 @@ static int drm_atomic_connector_set_property(struct drm_connector *connector,
> state->link_status = val;
> } else if (property == config->aspect_ratio_property) {
> state->picture_aspect_ratio = val;
> + } else if (property == config->content_type_property) {
> + state->content_type = val;
> } else if (property == connector->scaling_mode_property) {
> state->scaling_mode = val;
> } else if (property == connector->content_protection_property) {
> @@ -1355,6 +1357,8 @@ drm_atomic_connector_get_property(struct drm_connector *connector,
> *val = state->link_status;
> } else if (property == config->aspect_ratio_property) {
> *val = state->picture_aspect_ratio;
> + } else if (property == config->content_type_property) {
> + *val = state->content_type;
> } else if (property == connector->scaling_mode_property) {
> *val = state->scaling_mode;
> } else if (property == connector->content_protection_property) {
> diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
> index b3cde897cd80..f83f54d45561 100644
> --- a/drivers/gpu/drm/drm_connector.c
> +++ b/drivers/gpu/drm/drm_connector.c
> @@ -720,6 +720,14 @@ static const struct drm_prop_enum_list drm_aspect_ratio_enum_list[] = {
> { DRM_MODE_PICTURE_ASPECT_16_9, "16:9" },
> };
>
> +static const struct drm_prop_enum_list drm_content_type_enum_list[] = {
> + { DRM_MODE_CONTENT_TYPE_NO_DATA, "No Data" },
> + { DRM_MODE_CONTENT_TYPE_GRAPHICS, "Graphics" },
> + { DRM_MODE_CONTENT_TYPE_PHOTO, "Photo" },
> + { DRM_MODE_CONTENT_TYPE_CINEMA, "Cinema" },
> + { DRM_MODE_CONTENT_TYPE_GAME, "Game" },
> +};
> +
> static const struct drm_prop_enum_list drm_panel_orientation_enum_list[] = {
> { DRM_MODE_PANEL_ORIENTATION_NORMAL, "Normal" },
> { DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP, "Upside Down" },
> @@ -996,6 +1004,51 @@ int drm_mode_create_dvi_i_properties(struct drm_device *dev)
> }
> EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
>
> +
> +/**
> + * DOC: HDMI connector properties
> + *
> + * content type (HDMI specific):
> + * Indicates content type setting to be used in HDMI infoframes to indicate
> + * content type for the external device, so that it adjusts it's display
> + * settings accordingly.
> + *
> + * The value of this property can be one of the following:
> + *
> + * No Data:
> + * Content type is unknown
> + * Graphics:
> + * Content type is graphics
> + * Photo:
> + * Content type is photo
> + * Cinema:
> + * Content type is cinema
> + * Game:
> + * Content type is game
> + *
> + * Drivers can set up this property by calling
> + * drm_connector_attach_content_type_property(). Decoding to
> + * infoframe values is done through
> + * drm_hdmi_get_content_type_from_property() and
> + * drm_hdmi_get_itc_bit_from_property().
> + */
> +
> +/**
> + * drm_connector_attach_content_type_property - attach content-type property
> + * @connector: connector to attach content type property on.
> + *
> + * Called by a driver the first time a HDMI connector is made.
> + */
> +int drm_connector_attach_content_type_property(struct drm_connector *connector)
> +{
> + if (!drm_mode_create_content_type_property(connector->dev))
> + drm_object_attach_property(&connector->base,
> + connector->dev->mode_config.content_type_property,
> + DRM_MODE_CONTENT_TYPE_NO_DATA);
> + return 0;
> +}
> +EXPORT_SYMBOL(drm_connector_attach_content_type_property);
> +
> /**
> * drm_create_tv_properties - create TV specific connector properties
> * @dev: DRM device
> @@ -1260,6 +1313,33 @@ int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
> }
> EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
>
> +/**
> + * drm_mode_create_content_type_property - create content type property
> + * @dev: DRM device
> + *
> + * Called by a driver the first time it's needed, must be attached to desired
> + * connectors.
> + *
> + * Returns:
> + * Zero on success, negative errno on failure.
> + */
> +int drm_mode_create_content_type_property(struct drm_device *dev)
> +{
> + if (dev->mode_config.content_type_property)
> + return 0;
> +
> + dev->mode_config.content_type_property =
> + drm_property_create_enum(dev, 0, "content type",
> + drm_content_type_enum_list,
> + ARRAY_SIZE(drm_content_type_enum_list));
> +
> + if (dev->mode_config.content_type_property == NULL)
> + return -ENOMEM;
> +
> + return 0;
> +}
> +EXPORT_SYMBOL(drm_mode_create_content_type_property);
> +
> /**
> * drm_mode_create_suggested_offset_properties - create suggests offset properties
> * @dev: DRM device
> diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
> index 134069f36482..9ecda0b2a4d8 100644
> --- a/drivers/gpu/drm/drm_edid.c
> +++ b/drivers/gpu/drm/drm_edid.c
> @@ -4868,6 +4868,14 @@ drm_hdmi_avi_infoframe_from_display_mode(struct hdmi_avi_infoframe *frame,
>
> frame->picture_aspect = HDMI_PICTURE_ASPECT_NONE;
>
> + /*
> + * As some drivers don't support atomic, we can't use connector state.
> + * So just initialize the frame with default values, just the same way
> + * as it's done with other properties here.
> + */
> + frame->content_type = HDMI_CONTENT_TYPE_GRAPHICS;
> + frame->itc = 0;
> +
> /*
> * Populate picture aspect ratio from either
> * user input (if specified) or from the CEA mode list.
> @@ -4886,6 +4894,53 @@ drm_hdmi_avi_infoframe_from_display_mode(struct hdmi_avi_infoframe *frame,
> }
> EXPORT_SYMBOL(drm_hdmi_avi_infoframe_from_display_mode);
>
> +/**
> + * drm_hdmi_get_itc_bit_from_property() - get the HDMI IT content bit
> + * from content type property.
> + * content_type: Content type DRM property value
> + *
> + */
> +bool
> +drm_hdmi_get_itc_bit_from_property(unsigned int content_type)
> +{
> + /* Whenever something else than "No Data", IT Content bit must be set */
> + return content_type != DRM_MODE_CONTENT_TYPE_NO_DATA ? true : false;
No need for the ?: operator here.
> +}
> +EXPORT_SYMBOL(drm_hdmi_get_itc_bit_from_property);
> +
> +/**
> + * drm_hdmi_get_content_type_from_property() - get the HDMI content type bits
> + * from content type property.
> + * content_type: Content type DRM property value
> + *
> + */
> +enum hdmi_content_type
> +drm_hdmi_get_content_type_from_property(unsigned int content_type)
> +{
> + enum hdmi_content_type ret;
> +
> + switch (content_type) {
> + case DRM_MODE_CONTENT_TYPE_GRAPHICS:
> + ret = HDMI_CONTENT_TYPE_GRAPHICS;
> + break;
> + case DRM_MODE_CONTENT_TYPE_CINEMA:
> + ret = HDMI_CONTENT_TYPE_CINEMA;
> + break;
> + case DRM_MODE_CONTENT_TYPE_GAME:
> + ret = HDMI_CONTENT_TYPE_GAME;
> + break;
> + case DRM_MODE_CONTENT_TYPE_PHOTO:
> + ret = HDMI_CONTENT_TYPE_PHOTO;
> + break;
> + default:
> + /* Graphics is the default(0) */
> + ret = HDMI_CONTENT_TYPE_GRAPHICS;
> + }
> + return ret;
'ret' is pointless. You can just return direcly from the switch
statement.
> +}
> +EXPORT_SYMBOL(drm_hdmi_get_content_type_from_property);
Hmm. Actually it would seem simpler for drivers if you just exported
a single function where you pass in the infoframe to be populated and
and conn_state->content_type. That's how
drm_hdmi_avi_infoframe_quant_range() already works, and following an
already established pattern would be good.
Later on we definitely should look into make it even simpler for atomic
drivers by just passing in the appropriate states.
> +
> +
> /**
> * drm_hdmi_avi_infoframe_quant_range() - fill the HDMI AVI infoframe
> * quantization range information
> diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
> index 675cc3f8cf85..178fa3f3f5f7 100644
> --- a/include/drm/drm_connector.h
> +++ b/include/drm/drm_connector.h
> @@ -418,6 +418,16 @@ struct drm_connector_state {
> */
> enum hdmi_picture_aspect picture_aspect_ratio;
>
> +
> + /**
> + * @content_type: Connector property to control the
> + * HDMI infoframe content type setting.
> + * The %DRM_MODE_CONTENT_TYPE_\* values much
> + * match the values.
> + */
> + unsigned int content_type;
> +
> +
> /**
> * @scaling_mode: Connector property to control the
> * upscaling, mostly used for built-in panels.
> @@ -1089,11 +1099,13 @@ int drm_mode_create_tv_properties(struct drm_device *dev,
> unsigned int num_modes,
> const char * const modes[]);
> int drm_mode_create_scaling_mode_property(struct drm_device *dev);
> +int drm_connector_attach_content_type_property(struct drm_connector *dev);
> int drm_connector_attach_scaling_mode_property(struct drm_connector *connector,
> u32 scaling_mode_mask);
> int drm_connector_attach_content_protection_property(
> struct drm_connector *connector);
> int drm_mode_create_aspect_ratio_property(struct drm_device *dev);
> +int drm_mode_create_content_type_property(struct drm_device *dev);
> int drm_mode_create_suggested_offset_properties(struct drm_device *dev);
>
> int drm_mode_connector_set_path_property(struct drm_connector *connector,
> diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h
> index 8d89a9c3748d..4e264c4d8a9b 100644
> --- a/include/drm/drm_edid.h
> +++ b/include/drm/drm_edid.h
> @@ -350,6 +350,12 @@ drm_load_edid_firmware(struct drm_connector *connector)
> }
> #endif
>
> +bool
> +drm_hdmi_get_itc_bit_from_property(unsigned int content_type);
> +
> +enum hdmi_content_type
> +drm_hdmi_get_content_type_from_property(unsigned int content_type);
> +
> int
> drm_hdmi_avi_infoframe_from_display_mode(struct hdmi_avi_infoframe *frame,
> const struct drm_display_mode *mode,
> diff --git a/include/drm/drm_mode_config.h b/include/drm/drm_mode_config.h
> index 33b3a96d66d0..fb45839179dd 100644
> --- a/include/drm/drm_mode_config.h
> +++ b/include/drm/drm_mode_config.h
> @@ -726,6 +726,11 @@ struct drm_mode_config {
> * HDMI infoframe aspect ratio setting.
> */
> struct drm_property *aspect_ratio_property;
> + /**
> + * @content_type_property: Optional connector property to control the
> + * HDMI infoframe content type setting.
> + */
> + struct drm_property *content_type_property;
> /**
> * @degamma_lut_property: Optional CRTC property to set the LUT used to
> * convert the framebuffer's colors to linear gamma.
> diff --git a/include/uapi/drm/drm_mode.h b/include/uapi/drm/drm_mode.h
> index 50bcf4214ff9..cad9e09ffaee 100644
> --- a/include/uapi/drm/drm_mode.h
> +++ b/include/uapi/drm/drm_mode.h
> @@ -94,6 +94,13 @@ extern "C" {
> #define DRM_MODE_PICTURE_ASPECT_4_3 1
> #define DRM_MODE_PICTURE_ASPECT_16_9 2
>
> +/* Content type options */
> +#define DRM_MODE_CONTENT_TYPE_NO_DATA 0
> +#define DRM_MODE_CONTENT_TYPE_GRAPHICS 1
> +#define DRM_MODE_CONTENT_TYPE_PHOTO 2
> +#define DRM_MODE_CONTENT_TYPE_CINEMA 3
> +#define DRM_MODE_CONTENT_TYPE_GAME 4
> +
> /* Aspect ratio flag bitmask (4 bits 22:19) */
> #define DRM_MODE_FLAG_PIC_AR_MASK (0x0F<<19)
> #define DRM_MODE_FLAG_PIC_AR_NONE \
> --
> 2.17.0
--
Ville Syrjälä
Intel
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