Re: [PATCH 2/6] drm/i915: Clean up intel_get_load_detect_pipe() a bit

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On Wed, Jun 09, 2021 at 11:56:28AM +0300, Ville Syrjala wrote:
> From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> 
> Sort out the mess with the local variables in
> intel_get_load_detect_pipe(). Get rid of all aliasing pointers
> and use standard naming/types.
> 
> Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>

nice clean up

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>

> ---
>  drivers/gpu/drm/i915/display/intel_display.c | 41 +++++++++-----------
>  1 file changed, 19 insertions(+), 22 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
> index 62ad4cfae073..78815a1ac0ca 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -6473,13 +6473,11 @@ int intel_get_load_detect_pipe(struct drm_connector *connector,
>  			       struct intel_load_detect_pipe *old,
>  			       struct drm_modeset_acquire_ctx *ctx)
>  {
> -	struct intel_crtc *intel_crtc;
> -	struct intel_encoder *intel_encoder =
> +	struct intel_encoder *encoder =
>  		intel_attached_encoder(to_intel_connector(connector));
> -	struct drm_crtc *possible_crtc;
> -	struct drm_encoder *encoder = &intel_encoder->base;
> -	struct drm_crtc *crtc = NULL;
> -	struct drm_device *dev = encoder->dev;
> +	struct intel_crtc *possible_crtc;
> +	struct intel_crtc *crtc = NULL;
> +	struct drm_device *dev = encoder->base.dev;
>  	struct drm_i915_private *dev_priv = to_i915(dev);
>  	struct drm_mode_config *config = &dev->mode_config;
>  	struct drm_atomic_state *state = NULL, *restore_state = NULL;
> @@ -6489,7 +6487,7 @@ int intel_get_load_detect_pipe(struct drm_connector *connector,
>  
>  	drm_dbg_kms(&dev_priv->drm, "[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
>  		    connector->base.id, connector->name,
> -		    encoder->base.id, encoder->name);
> +		    encoder->base.base.id, encoder->base.name);
>  
>  	old->restore_state = NULL;
>  
> @@ -6507,9 +6505,9 @@ int intel_get_load_detect_pipe(struct drm_connector *connector,
>  
>  	/* See if we already have a CRTC for this connector */
>  	if (connector->state->crtc) {
> -		crtc = connector->state->crtc;
> +		crtc = to_intel_crtc(connector->state->crtc);
>  
> -		ret = drm_modeset_lock(&crtc->mutex, ctx);
> +		ret = drm_modeset_lock(&crtc->base.mutex, ctx);
>  		if (ret)
>  			goto fail;
>  
> @@ -6518,16 +6516,17 @@ int intel_get_load_detect_pipe(struct drm_connector *connector,
>  	}
>  
>  	/* Find an unused one (if possible) */
> -	for_each_crtc(dev, possible_crtc) {
> -		if (!(encoder->possible_crtcs & drm_crtc_mask(possible_crtc)))
> +	for_each_intel_crtc(dev, possible_crtc) {
> +		if (!(encoder->base.possible_crtcs &
> +		      drm_crtc_mask(&possible_crtc->base)))
>  			continue;
>  
> -		ret = drm_modeset_lock(&possible_crtc->mutex, ctx);
> +		ret = drm_modeset_lock(&possible_crtc->base.mutex, ctx);
>  		if (ret)
>  			goto fail;
>  
> -		if (possible_crtc->state->enable) {
> -			drm_modeset_unlock(&possible_crtc->mutex);
> +		if (possible_crtc->base.state->enable) {
> +			drm_modeset_unlock(&possible_crtc->base.mutex);
>  			continue;
>  		}
>  
> @@ -6546,8 +6545,6 @@ int intel_get_load_detect_pipe(struct drm_connector *connector,
>  	}
>  
>  found:
> -	intel_crtc = to_intel_crtc(crtc);
> -
>  	state = drm_atomic_state_alloc(dev);
>  	restore_state = drm_atomic_state_alloc(dev);
>  	if (!state || !restore_state) {
> @@ -6564,11 +6561,11 @@ int intel_get_load_detect_pipe(struct drm_connector *connector,
>  		goto fail;
>  	}
>  
> -	ret = drm_atomic_set_crtc_for_connector(connector_state, crtc);
> +	ret = drm_atomic_set_crtc_for_connector(connector_state, &crtc->base);
>  	if (ret)
>  		goto fail;
>  
> -	crtc_state = intel_atomic_get_crtc_state(state, intel_crtc);
> +	crtc_state = intel_atomic_get_crtc_state(state, crtc);
>  	if (IS_ERR(crtc_state)) {
>  		ret = PTR_ERR(crtc_state);
>  		goto fail;
> @@ -6581,15 +6578,15 @@ int intel_get_load_detect_pipe(struct drm_connector *connector,
>  	if (ret)
>  		goto fail;
>  
> -	ret = intel_modeset_disable_planes(state, crtc);
> +	ret = intel_modeset_disable_planes(state, &crtc->base);
>  	if (ret)
>  		goto fail;
>  
>  	ret = PTR_ERR_OR_ZERO(drm_atomic_get_connector_state(restore_state, connector));
>  	if (!ret)
> -		ret = PTR_ERR_OR_ZERO(drm_atomic_get_crtc_state(restore_state, crtc));
> +		ret = PTR_ERR_OR_ZERO(drm_atomic_get_crtc_state(restore_state, &crtc->base));
>  	if (!ret)
> -		ret = drm_atomic_add_affected_planes(restore_state, crtc);
> +		ret = drm_atomic_add_affected_planes(restore_state, &crtc->base);
>  	if (ret) {
>  		drm_dbg_kms(&dev_priv->drm,
>  			    "Failed to create a copy of old state to restore: %i\n",
> @@ -6608,7 +6605,7 @@ int intel_get_load_detect_pipe(struct drm_connector *connector,
>  	drm_atomic_state_put(state);
>  
>  	/* let the connector get through one full cycle before testing */
> -	intel_wait_for_vblank(dev_priv, intel_crtc->pipe);
> +	intel_wait_for_vblank(dev_priv, crtc->pipe);
>  	return true;
>  
>  fail:
> -- 
> 2.31.1
> 
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