[Intel-gfx] [PATCH v6 12/28] drm/i915/dp: Add DSC params and DSC config to intel_crtc_state

[Manasi Navare]

On Wed, Oct 24, 2018 at 03:28:24PM -0700, Manasi Navare wrote:
> Basic DSC parameters and DSC configuration data needs to be computed
> for each of the requested mode during atomic check. This is
> required since for certain modes, valid DSC parameters and config
> data might not be computed in which case compression cannot be
> enabled for that mode.
> For that reason we need to add these params and config structure
> to the intel_crtc_state so that if valid this state information
> can directly be used while enabling DSC in atomic commit.
> 
> v2:
> * Rebase on drm-tip (Manasi)
> 
> Cc: Gaurav K Singh <gaurav.k.singh at intel.com>
> Cc: Jani Nikula <jani.nikula at linux.intel.com>
> Cc: Ville Syrjala <ville.syrjala at linux.intel.com>
> Cc: Anusha Srivatsa <anusha.srivatsa at intel.com>
> Signed-off-by: Manasi Navare <manasi.d.navare at intel.com>
> Reviewed-by: Anusha Srivatsa <anusha.srivatsa at intel.com>
> ---
>  drivers/gpu/drm/i915/i915_drv.h  | 1 +
>  drivers/gpu/drm/i915/intel_drv.h | 9 +++++++++
>  2 files changed, 10 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> index 2d7761b8ac07..45fd7894722b 100644
> --- a/drivers/gpu/drm/i915/i915_drv.h
> +++ b/drivers/gpu/drm/i915/i915_drv.h
> @@ -53,6 +53,7 @@
>  #include <drm/drm_auth.h>
>  #include <drm/drm_cache.h>
>  #include <drm/drm_util.h>
> +#include <drm/drm_dsc.h>
>  
>  #include "i915_params.h"
>  #include "i915_reg.h"
> diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
> index 62c051098859..27d47950f438 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -931,6 +931,15 @@ struct intel_crtc_state {
>  
>  	/* Output down scaling is done in LSPCON device */
>  	bool lspcon_downsampling;
> +
> +	/* Display Stream compression state */
> +	struct {
> +		bool compression_enable;
> +		bool dsc_split;
> +		u16 compressed_bpp;
> +		u8 slice_count;
> +	} dsc_params;
> +	struct drm_dsc_config dp_dsc_cfg;

Ville, Jani should this be defined as a pointer to struct drm_dsc_config?
struct drm_dsc_config *dp_dsc_cfg
since we populate this in intel_dp_compute_config and then on only read during
commit.

Manasi

>  };
>  
>  struct intel_crtc {
> -- 
> 2.18.0
>