[Intel-gfx] [PATCH] drm/i915: Stop using crtc->index as the pipe

[Souza, Jose]

On Mon, 2021-04-26 at 21:56 +0300, Ville Syrjala wrote:
> From: Ville Syrjälä <ville.syrjala at linux.intel.com>
> 
> The pipe crc code slipped theough the net when we tried to
> eliminate all crtc->index==pipe abuses. Remedy that.
> 
> And while at it get rid of those nasty intel_crtc+drm_crtc
> pointer aliases.

intel_crtc is broadly used, also we have the same for other structs like intel_connector, in my option that is better than _crtc x crtc.

The crtc->index change looks good to me.

> 
> Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_pipe_crc.c | 51 ++++++++++---------
>  1 file changed, 26 insertions(+), 25 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_pipe_crc.c b/drivers/gpu/drm/i915/display/intel_pipe_crc.c
> index 0f6de96e6d43..acc64b87d29f 100644
> --- a/drivers/gpu/drm/i915/display/intel_pipe_crc.c
> +++ b/drivers/gpu/drm/i915/display/intel_pipe_crc.c
> @@ -580,13 +580,14 @@ int intel_crtc_verify_crc_source(struct drm_crtc *crtc, const char *source_name,
>  	return -EINVAL;
>  }
>  
> 
> 
> 
> -int intel_crtc_set_crc_source(struct drm_crtc *crtc, const char *source_name)
> +int intel_crtc_set_crc_source(struct drm_crtc *_crtc, const char *source_name)
>  {
> -	struct drm_i915_private *dev_priv = to_i915(crtc->dev);
> -	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
> -	struct intel_pipe_crc *pipe_crc = &intel_crtc->pipe_crc;
> +	struct intel_crtc *crtc = to_intel_crtc(_crtc);
> +	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
> +	struct intel_pipe_crc *pipe_crc = &crtc->pipe_crc;
>  	enum intel_display_power_domain power_domain;
>  	enum intel_pipe_crc_source source;
> +	enum pipe pipe = crtc->pipe;
>  	intel_wakeref_t wakeref;
>  	u32 val = 0; /* shut up gcc */
>  	int ret = 0;
> @@ -597,7 +598,7 @@ int intel_crtc_set_crc_source(struct drm_crtc *crtc, const char *source_name)
>  		return -EINVAL;
>  	}
>  
> 
> 
> 
> -	power_domain = POWER_DOMAIN_PIPE(crtc->index);
> +	power_domain = POWER_DOMAIN_PIPE(pipe);
>  	wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain);
>  	if (!wakeref) {
>  		drm_dbg_kms(&dev_priv->drm,
> @@ -607,64 +608,64 @@ int intel_crtc_set_crc_source(struct drm_crtc *crtc, const char *source_name)
>  
> 
> 
> 
>  	enable = source != INTEL_PIPE_CRC_SOURCE_NONE;
>  	if (enable)
> -		intel_crtc_crc_setup_workarounds(to_intel_crtc(crtc), true);
> +		intel_crtc_crc_setup_workarounds(crtc, true);
>  
> 
> 
> 
> -	ret = get_new_crc_ctl_reg(dev_priv, crtc->index, &source, &val);
> +	ret = get_new_crc_ctl_reg(dev_priv, pipe, &source, &val);
>  	if (ret != 0)
>  		goto out;
>  
> 
> 
> 
>  	pipe_crc->source = source;
> -	intel_de_write(dev_priv, PIPE_CRC_CTL(crtc->index), val);
> -	intel_de_posting_read(dev_priv, PIPE_CRC_CTL(crtc->index));
> +	intel_de_write(dev_priv, PIPE_CRC_CTL(pipe), val);
> +	intel_de_posting_read(dev_priv, PIPE_CRC_CTL(pipe));
>  
> 
> 
> 
>  	if (!source) {
>  		if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
> -			vlv_undo_pipe_scramble_reset(dev_priv, crtc->index);
> +			vlv_undo_pipe_scramble_reset(dev_priv, pipe);
>  	}
>  
> 
> 
> 
>  	pipe_crc->skipped = 0;
>  
> 
> 
> 
>  out:
>  	if (!enable)
> -		intel_crtc_crc_setup_workarounds(to_intel_crtc(crtc), false);
> +		intel_crtc_crc_setup_workarounds(crtc, false);
>  
> 
> 
> 
>  	intel_display_power_put(dev_priv, power_domain, wakeref);
>  
> 
> 
> 
>  	return ret;
>  }
>  
> 
> 
> 
> -void intel_crtc_enable_pipe_crc(struct intel_crtc *intel_crtc)
> +void intel_crtc_enable_pipe_crc(struct intel_crtc *crtc)
>  {
> -	struct drm_crtc *crtc = &intel_crtc->base;
> -	struct drm_i915_private *dev_priv = to_i915(crtc->dev);
> -	struct intel_pipe_crc *pipe_crc = &intel_crtc->pipe_crc;
> +	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
> +	struct intel_pipe_crc *pipe_crc = &crtc->pipe_crc;
> +	enum pipe pipe = crtc->pipe;
>  	u32 val = 0;
>  
> 
> 
> 
> -	if (!crtc->crc.opened)
> +	if (!crtc->base.crc.opened)
>  		return;
>  
> 
> 
> 
> -	if (get_new_crc_ctl_reg(dev_priv, crtc->index, &pipe_crc->source, &val) < 0)
> +	if (get_new_crc_ctl_reg(dev_priv, pipe, &pipe_crc->source, &val) < 0)
>  		return;
>  
> 
> 
> 
>  	/* Don't need pipe_crc->lock here, IRQs are not generated. */
>  	pipe_crc->skipped = 0;
>  
> 
> 
> 
> -	intel_de_write(dev_priv, PIPE_CRC_CTL(crtc->index), val);
> -	intel_de_posting_read(dev_priv, PIPE_CRC_CTL(crtc->index));
> +	intel_de_write(dev_priv, PIPE_CRC_CTL(pipe), val);
> +	intel_de_posting_read(dev_priv, PIPE_CRC_CTL(pipe));
>  }
>  
> 
> 
> 
> -void intel_crtc_disable_pipe_crc(struct intel_crtc *intel_crtc)
> +void intel_crtc_disable_pipe_crc(struct intel_crtc *crtc)
>  {
> -	struct drm_crtc *crtc = &intel_crtc->base;
> -	struct drm_i915_private *dev_priv = to_i915(crtc->dev);
> -	struct intel_pipe_crc *pipe_crc = &intel_crtc->pipe_crc;
> +	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
> +	struct intel_pipe_crc *pipe_crc = &crtc->pipe_crc;
> +	enum pipe pipe = crtc->pipe;
>  
> 
> 
> 
>  	/* Swallow crc's until we stop generating them. */
>  	spin_lock_irq(&pipe_crc->lock);
>  	pipe_crc->skipped = INT_MIN;
>  	spin_unlock_irq(&pipe_crc->lock);
>  
> 
> 
> 
> -	intel_de_write(dev_priv, PIPE_CRC_CTL(crtc->index), 0);
> -	intel_de_posting_read(dev_priv, PIPE_CRC_CTL(crtc->index));
> +	intel_de_write(dev_priv, PIPE_CRC_CTL(pipe), 0);
> +	intel_de_posting_read(dev_priv, PIPE_CRC_CTL(pipe));
>  	intel_synchronize_irq(dev_priv);
>  }