On Fri, Jun 05, 2020 at 07:57:37PM -0700, Matt Roper wrote:
> From: Aditya Swarup <[email protected]>
> 
> RKL doesn't have DSI outputs, so we shouldn't try to read out the DSI
> transcoder registers.
> 
> v2(MattR):
>  - Just set the 'extra panel mask' to edp | dsi0 | dsi1 and then mask
>    against the platform's cpu_transcoder_mask to filter out the ones
>    that don't exist on a given platform.  (Ville)
> 
> v3(MattR):
>  - Only include DSI transcoders on gen11+ again. (Ville)
>  - Use for_each_cpu_transcoder_masked() for loop. (Ville)
> 
> Cc: Ville Syrjälä <[email protected]>
> Signed-off-by: Aditya Swarup <[email protected]>
> Signed-off-by: Matt Roper <[email protected]>
> ---
>  drivers/gpu/drm/i915/display/intel_display.c | 10 +++-------
>  1 file changed, 3 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_display.c 
> b/drivers/gpu/drm/i915/display/intel_display.c
> index 9820874d3ea2..6c2bb3354b86 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -10904,7 +10904,7 @@ static bool hsw_get_transcoder_state(struct 
> intel_crtc *crtc,
>       struct drm_device *dev = crtc->base.dev;
>       struct drm_i915_private *dev_priv = to_i915(dev);
>       enum intel_display_power_domain power_domain;
> -     unsigned long panel_transcoder_mask = 0;
> +     unsigned long panel_transcoder_mask = BIT(TRANSCODER_EDP);
>       unsigned long enabled_panel_transcoders = 0;

Could get rid of the longs now that we're no longer using
for_each_set_bit()

Reviewed-by: Ville Syrjälä <[email protected]>

>       enum transcoder panel_transcoder;
>       intel_wakeref_t wf;
> @@ -10914,9 +10914,6 @@ static bool hsw_get_transcoder_state(struct 
> intel_crtc *crtc,
>               panel_transcoder_mask |=
>                       BIT(TRANSCODER_DSI_0) | BIT(TRANSCODER_DSI_1);
>  
> -     if (HAS_TRANSCODER(dev_priv, TRANSCODER_EDP))
> -             panel_transcoder_mask |= BIT(TRANSCODER_EDP);
> -
>       /*
>        * The pipe->transcoder mapping is fixed with the exception of the eDP
>        * and DSI transcoders handled below.
> @@ -10927,9 +10924,8 @@ static bool hsw_get_transcoder_state(struct 
> intel_crtc *crtc,
>        * XXX: Do intel_display_power_get_if_enabled before reading this (for
>        * consistency and less surprising code; it's in always on power).
>        */
> -     for_each_set_bit(panel_transcoder,
> -                      &panel_transcoder_mask,
> -                      ARRAY_SIZE(INTEL_INFO(dev_priv)->trans_offsets)) {
> +     for_each_cpu_transcoder_masked(dev_priv, panel_transcoder,
> +                                    panel_transcoder_mask) {
>               bool force_thru = false;
>               enum pipe trans_pipe;
>  
> -- 
> 2.24.1

-- 
Ville Syrjälä
Intel
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