[PATCH 5/6] drm/i915/bios: fill in DSC rc_model_size from VBT

[Navare, Manasi]

On Tue, Dec 08, 2020 at 02:33:54PM +0200, Jani Nikula wrote:
> The VBT fields match the DPCD data, so use the same helper.
> 
> Cc: Manasi Navare <manasi.d.navare at intel.com>
> Cc: Vandita Kulkarni <vandita.kulkarni at intel.com>
> Signed-off-by: Jani Nikula <jani.nikula at intel.com>

Only for DSI so far right?

In that case looks good

Reviewed-by: Manasi Navare <manasi.d.navare at intel.com>

Manasi

> ---
>  drivers/gpu/drm/i915/display/intel_bios.c | 11 +++--------
>  1 file changed, 3 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c
> index 4cc949b228f2..06c3310446a2 100644
> --- a/drivers/gpu/drm/i915/display/intel_bios.c
> +++ b/drivers/gpu/drm/i915/display/intel_bios.c
> @@ -2555,16 +2555,11 @@ static void fill_dsc(struct intel_crtc_state *crtc_state,
>  			      crtc_state->dsc.slice_count);
>  
>  	/*
> -	 * FIXME: Use VBT rc_buffer_block_size and rc_buffer_size for the
> -	 * implementation specific physical rate buffer size. Currently we use
> -	 * the required rate buffer model size calculated in
> -	 * drm_dsc_compute_rc_parameters() according to VESA DSC Annex E.
> -	 *
>  	 * The VBT rc_buffer_block_size and rc_buffer_size definitions
> -	 * correspond to DP 1.4 DPCD offsets 0x62 and 0x63. The DP DSC
> -	 * implementation should also use the DPCD (or perhaps VBT for eDP)
> -	 * provided value for the buffer size.
> +	 * correspond to DP 1.4 DPCD offsets 0x62 and 0x63.
>  	 */
> +	vdsc_cfg->rc_model_size = drm_dsc_dp_rc_buffer_size(dsc->rc_buffer_block_size,
> +							    dsc->rc_buffer_size);
>  
>  	/* FIXME: DSI spec says bpc + 1 for this one */
>  	vdsc_cfg->line_buf_depth = VBT_DSC_LINE_BUFFER_DEPTH(dsc->line_buffer_depth);
> -- 
> 2.20.1
>