On Wed, Sep 18, 2024 at 08:13:35PM +0530, Ankit Nautiyal wrote:
> We need to add a new sanity checks and also do
> some preparations for adding ultrajoiner hw state readout.
> Lets first split reading of the uncompressed joiner and bigjoiner
> bit masks into separate functions.
> 
> v2: Fixed checkpatch warnings (Ankit)
> v3: Use struct intel_display in the new functions. (Ankit)
> v4: Use check for bigjoiner before reading the regs. (Ville)
> 
> Signed-off-by: Stanislav Lisovskiy <[email protected]>
> Signed-off-by: Ankit Nautiyal <[email protected]>
> Reviewed-by: Suraj Kandpal <[email protected]>

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

> ---
>  drivers/gpu/drm/i915/display/intel_display.c | 74 +++++++++++++++-----
>  1 file changed, 55 insertions(+), 19 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_display.c 
> b/drivers/gpu/drm/i915/display/intel_display.c
> index 7cdc12188df9..28447d4c8934 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -3591,26 +3591,57 @@ static bool transcoder_ddi_func_is_enabled(struct 
> drm_i915_private *dev_priv,
>       return tmp & TRANS_DDI_FUNC_ENABLE;
>  }
>  
> -static void enabled_joiner_pipes(struct drm_i915_private *dev_priv,
> -                              u8 *primary_pipes, u8 *secondary_pipes)
> +static void enabled_uncompressed_joiner_pipes(struct intel_display *display,
> +                                           u8 *primary_pipes, u8 
> *secondary_pipes)
>  {
> +     struct drm_i915_private *i915 = to_i915(display->drm);
>       struct intel_crtc *crtc;
>  
>       *primary_pipes = 0;
>       *secondary_pipes = 0;
>  
> -     if (!HAS_BIGJOINER(dev_priv))
> +     if (!HAS_UNCOMPRESSED_JOINER(display))
>               return;
>  
> -     for_each_intel_crtc_in_pipe_mask(&dev_priv->drm, crtc,
> -                                      joiner_pipes(dev_priv)) {
> +     for_each_intel_crtc_in_pipe_mask(&i915->drm, crtc,
> +                                      joiner_pipes(i915)) {
>               enum intel_display_power_domain power_domain;
>               enum pipe pipe = crtc->pipe;
>               intel_wakeref_t wakeref;
>  
> -             power_domain = intel_dsc_power_domain(crtc, (enum transcoder) 
> pipe);
> -             with_intel_display_power_if_enabled(dev_priv, power_domain, 
> wakeref) {
> -                     u32 tmp = intel_de_read(dev_priv, 
> ICL_PIPE_DSS_CTL1(pipe));
> +             power_domain = POWER_DOMAIN_PIPE(pipe);
> +             with_intel_display_power_if_enabled(i915, power_domain, 
> wakeref) {
> +                     u32 tmp = intel_de_read(display, 
> ICL_PIPE_DSS_CTL1(pipe));
> +
> +                     if (tmp & UNCOMPRESSED_JOINER_PRIMARY)
> +                             *primary_pipes |= BIT(pipe);
> +                     if (tmp & UNCOMPRESSED_JOINER_SECONDARY)
> +                             *secondary_pipes |= BIT(pipe);
> +             }
> +     }
> +}
> +
> +static void enabled_bigjoiner_pipes(struct intel_display *display,
> +                                 u8 *primary_pipes, u8 *secondary_pipes)
> +{
> +     struct drm_i915_private *i915 = to_i915(display->drm);
> +     struct intel_crtc *crtc;
> +
> +     *primary_pipes = 0;
> +     *secondary_pipes = 0;
> +
> +     if (!HAS_BIGJOINER(display))
> +             return;
> +
> +     for_each_intel_crtc_in_pipe_mask(&i915->drm, crtc,
> +                                      joiner_pipes(i915)) {
> +             enum intel_display_power_domain power_domain;
> +             enum pipe pipe = crtc->pipe;
> +             intel_wakeref_t wakeref;
> +
> +             power_domain = intel_dsc_power_domain(crtc, (enum 
> transcoder)pipe);
> +             with_intel_display_power_if_enabled(i915, power_domain, 
> wakeref) {
> +                     u32 tmp = intel_de_read(display, 
> ICL_PIPE_DSS_CTL1(pipe));
>  
>                       if (!(tmp & BIG_JOINER_ENABLE))
>                               continue;
> @@ -3620,20 +3651,25 @@ static void enabled_joiner_pipes(struct 
> drm_i915_private *dev_priv,
>                       else
>                               *secondary_pipes |= BIT(pipe);
>               }
> +     }
> +}
>  
> -             if (!HAS_UNCOMPRESSED_JOINER(dev_priv))
> -                     continue;
> +static void enabled_joiner_pipes(struct drm_i915_private *dev_priv,
> +                              u8 *primary_pipes, u8 *secondary_pipes)
> +{
> +     struct intel_display *display = to_intel_display(&dev_priv->drm);
> +     u8 primary_uncompressed_joiner_pipes, primary_bigjoiner_pipes;
> +     u8 secondary_uncompressed_joiner_pipes, secondary_bigjoiner_pipes;
>  
> -             power_domain = POWER_DOMAIN_PIPE(pipe);
> -             with_intel_display_power_if_enabled(dev_priv, power_domain, 
> wakeref) {
> -                     u32 tmp = intel_de_read(dev_priv, 
> ICL_PIPE_DSS_CTL1(pipe));
> +     enabled_uncompressed_joiner_pipes(display, 
> &primary_uncompressed_joiner_pipes,
> +                                       &secondary_uncompressed_joiner_pipes);
>  
> -                     if (tmp & UNCOMPRESSED_JOINER_PRIMARY)
> -                             *primary_pipes |= BIT(pipe);
> -                     if (tmp & UNCOMPRESSED_JOINER_SECONDARY)
> -                             *secondary_pipes |= BIT(pipe);
> -             }
> -     }
> +     enabled_bigjoiner_pipes(display, &primary_bigjoiner_pipes,
> +                             &secondary_bigjoiner_pipes);
> +
> +     *primary_pipes = primary_uncompressed_joiner_pipes | 
> primary_bigjoiner_pipes;
> +
> +     *secondary_pipes = secondary_uncompressed_joiner_pipes | 
> secondary_bigjoiner_pipes;
>  
>       /* Joiner pipes should always be consecutive primary and secondary */
>       drm_WARN(&dev_priv->drm, *secondary_pipes != *primary_pipes << 1,
> -- 
> 2.45.2

-- 
Ville Syrjälä
Intel

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