[Intel-gfx] [PATCH 12/28] drm/i915/tgl: Add TRANSCODER_A_VDSC power domain

[Ville Syrjälä]

On Tue, Jun 25, 2019 at 10:54:21AM -0700, Lucas De Marchi wrote:
> From: José Roberto de Souza <jose.souza at intel.com>
> 
> On TGL the special EDP transcoder is gone and it should be handled by
> transcoder A. Add POWER_DOMAIN_TRANSCODER_A_VDSC to make this
> distinction clear and update vdsc code path.
> 
> Cc: Imre Deak <imre.deak at intel.com>
> Signed-off-by: José Roberto de Souza <jose.souza at intel.com>
> Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_display_power.c |  2 ++
>  drivers/gpu/drm/i915/display/intel_display_power.h |  1 +
>  drivers/gpu/drm/i915/display/intel_vdsc.c          | 11 ++++++++---
>  3 files changed, 11 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_display_power.c b/drivers/gpu/drm/i915/display/intel_display_power.c
> index 0c7d4a363deb..15582841fefc 100644
> --- a/drivers/gpu/drm/i915/display/intel_display_power.c
> +++ b/drivers/gpu/drm/i915/display/intel_display_power.c
> @@ -58,6 +58,8 @@ intel_display_power_domain_str(struct drm_i915_private *i915,
>  		return "TRANSCODER_EDP";
>  	case POWER_DOMAIN_TRANSCODER_EDP_VDSC:
>  		return "TRANSCODER_EDP_VDSC";
> +	case POWER_DOMAIN_TRANSCODER_A_VDSC:
> +		return "TRANSCODER_A_VDSC";
>  	case POWER_DOMAIN_TRANSCODER_DSI_A:
>  		return "TRANSCODER_DSI_A";
>  	case POWER_DOMAIN_TRANSCODER_DSI_C:
> diff --git a/drivers/gpu/drm/i915/display/intel_display_power.h b/drivers/gpu/drm/i915/display/intel_display_power.h
> index 79262a5bceb4..7761b493608a 100644
> --- a/drivers/gpu/drm/i915/display/intel_display_power.h
> +++ b/drivers/gpu/drm/i915/display/intel_display_power.h
> @@ -29,6 +29,7 @@ enum intel_display_power_domain {
>  	POWER_DOMAIN_TRANSCODER_D,
>  	POWER_DOMAIN_TRANSCODER_EDP,
>  	POWER_DOMAIN_TRANSCODER_EDP_VDSC,
> +	POWER_DOMAIN_TRANSCODER_A_VDSC,

Two power domains for essentially the same thing seems a bit wasteful.

>  	POWER_DOMAIN_TRANSCODER_DSI_A,
>  	POWER_DOMAIN_TRANSCODER_DSI_C,
>  	POWER_DOMAIN_PORT_DDI_A_LANES,
> diff --git a/drivers/gpu/drm/i915/display/intel_vdsc.c b/drivers/gpu/drm/i915/display/intel_vdsc.c
> index ffec807b8960..0c75b408d6ba 100644
> --- a/drivers/gpu/drm/i915/display/intel_vdsc.c
> +++ b/drivers/gpu/drm/i915/display/intel_vdsc.c
> @@ -459,16 +459,21 @@ int intel_dp_compute_dsc_params(struct intel_dp *intel_dp,
>  enum intel_display_power_domain
>  intel_dsc_power_domain(const struct intel_crtc_state *crtc_state)
>  {
> +	struct drm_i915_private *dev_priv = to_i915(crtc_state->base.state->dev);
>  	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
>  
>  	/*
> -	 * On ICL VDSC/joining for eDP transcoder uses a separate power well PW2
> -	 * This requires POWER_DOMAIN_TRANSCODER_EDP_VDSC power domain.
> +	 * On ICL+ VDSC/joining for eDP/A transcoder uses a separate power well
> +	 * PW2. This requires
> +	 * POWER_DOMAIN_TRANSCODER_EDP_VDSC/POWER_DOMAIN_TRANSCODER_A_VDSC power
> +	 * domain.
>  	 * For any other transcoder, VDSC/joining uses the power well associated
>  	 * with the pipe/transcoder in use. Hence another reference on the
>  	 * transcoder power domain will suffice.
>  	 */
> -	if (cpu_transcoder == TRANSCODER_EDP)
> +	if (INTEL_GEN(dev_priv) >= 12 && cpu_transcoder == TRANSCODER_A)
> +		return POWER_DOMAIN_TRANSCODER_A_VDSC;
> +	else if (cpu_transcoder == TRANSCODER_EDP)
>  		return POWER_DOMAIN_TRANSCODER_EDP_VDSC;
>  	else
>  		return POWER_DOMAIN_TRANSCODER(cpu_transcoder);
> -- 
> 2.21.0
> 
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-- 
Ville Syrjälä
Intel