[Intel-gfx] [PATCH 07/12] drm/i915: Document the sets of bits in the driver features block

[Jani Nikula]

On Fri, 15 Jul 2022, Ville Syrjala <ville.syrjala at linux.intel.com> wrote:
> From: Ville Syrjälä <ville.syrjala at linux.intel.com>
>
> Add a few comment documenting the sets of bits in the driver
> features block. Might make it a bit easier to check against
> the spec.
>
> Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>

Reviewed-by: Jani Nikula <jani.nikula at intel.com>

> ---
>  drivers/gpu/drm/i915/display/intel_vbt_defs.h | 7 +++++++
>  1 file changed, 7 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_vbt_defs.h b/drivers/gpu/drm/i915/display/intel_vbt_defs.h
> index 8bdb533b5304..c04937aa75b2 100644
> --- a/drivers/gpu/drm/i915/display/intel_vbt_defs.h
> +++ b/drivers/gpu/drm/i915/display/intel_vbt_defs.h
> @@ -542,6 +542,7 @@ struct bdb_psr {
>  #define BDB_DRIVER_FEATURE_INT_SDVO_LVDS	3
>  
>  struct bdb_driver_features {
> +	/* Driver bits */
>  	u8 boot_dev_algorithm:1;
>  	u8 block_display_switch:1;
>  	u8 allow_display_switch:1;
> @@ -556,6 +557,7 @@ struct bdb_driver_features {
>  	u8 boot_mode_bpp;
>  	u8 boot_mode_refresh;
>  
> +	/* Extended Driver Bits 1 */
>  	u16 enable_lfp_primary:1;
>  	u16 selective_mode_pruning:1;
>  	u16 dual_frequency:1;
> @@ -571,6 +573,7 @@ struct bdb_driver_features {
>  	u16 tv_hotplug:1;
>  	u16 hdmi_config:2;
>  
> +	/* Driver Flags 1 */
>  	u8 static_display:1;					/* 163+ */
>  	u8 reserved2:7;
>  
> @@ -578,8 +581,12 @@ struct bdb_driver_features {
>  	u16 legacy_crt_max_y;
>  	u8 legacy_crt_max_refresh;
>  
> +	/* Extended Driver Bits 2 */
>  	u8 hdmi_termination;
> +
>  	u8 custom_vbt_version;					/* 165+ */
> +
> +	/* Driver Feature Flags */
>  	u16 rmpm_enabled:1;					/* 165+ */
>  	u16 s2ddt_enabled:1;					/* 165+ */
>  	u16 dpst_enabled:1;					/* 165-227 */

-- 
Jani Nikula, Intel Open Source Graphics Center