On Mon, May 07, 2018 at 04:16:40PM +0300, StanLis wrote:
> From: Stanislav Lisovskiy <[email protected]>
>
> 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.
>
> Signed-off-by: Stanislav Lisovskiy <[email protected]>
> ---
> 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 | 74 ++++++++++++++++++++++++++++
> 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, 170 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..fe63395f159d 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 +1004,45 @@ 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
Links to the function that set up/use the property would be good here.
I.e.
"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()."
Aside: A simple helper that computes the correct infoframes from the
drm_connector_state and drm_display_info, without forcing drivers to call
a gazillion individual helper functions would be real nice. But that's for
someone else I think - all the verbosity here simply annoys me a bit.
With the above kerneldoc polish:
Acked-by: Daniel Vetter <[email protected]>
-Daniel
> + */
> +
> +/**
> + * 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 +1307,33 @@ 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);
Do we really need to export this? Drivers should only call
drm_connector_attach_content_type_property() I think ...
> +
> /**
> * 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;
> +}
> +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;
> +}
> +EXPORT_SYMBOL(drm_hdmi_get_content_type_from_property);
> +
> +
> /**
> * 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
>
> _______________________________________________
> Intel-gfx mailing list
> [email protected]
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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