[Intel-gfx] [PATCH 14/14] drm/i915: Modeset global_pipes() update

[Ville Syrjälä]

On Wed, Apr 15, 2015 at 04:07:24PM +0300, Mika Kahola wrote:
> Combined Valleyview, Haswell and Broadwell '*_modeset_global_pipes()'
> into one function 'intel_modeset_global_pipes()'
> 
> v2:
> - we don't modify 'disable_pipes', so passing this as a pointer
>   is removed (based on Ville's comment)
> - introduced a new function 'intel_calc_cdclk()' that combines
>   routines from 'valleyview_calc_cdclk()' and 'haswell_calc_cdclk()'
> 
> v3:
> - Let's take a step back and not remove the routines 'valleyview_calc_cdclk()'
>   and 'haswell_calc_cdclk()' from newly introduced routine
>   'intel_calc_cdclk()' (based on Ville's comment)
> 
> v4:
> - Rebased to the latest
> 
> Signed-off-by: Mika Kahola <mika.kahola at intel.com>

Reviewed-by: Ville Syrjälä <ville.syrjala at linux.intel.com>

> ---
>  drivers/gpu/drm/i915/intel_display.c | 70 +++++++++++++++++-------------------
>  1 file changed, 32 insertions(+), 38 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index d79421a..f199faa 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -5433,28 +5433,6 @@ static int intel_mode_max_pixclk(struct drm_atomic_state *state)
>  	return max_pixclk;
>  }
>  
> -static int valleyview_modeset_global_pipes(struct drm_atomic_state *state,
> -					    unsigned *prepare_pipes)
> -{
> -	struct drm_i915_private *dev_priv = to_i915(state->dev);
> -	struct intel_crtc *intel_crtc;
> -	int max_pixclk = intel_mode_max_pixclk(state);
> -
> -	if (max_pixclk < 0)
> -		return max_pixclk;
> -
> -	if (valleyview_calc_cdclk(dev_priv, max_pixclk) ==
> -	    dev_priv->cdclk_freq)
> -		return 0;
> -
> -	/* disable/enable all currently active pipes while we change cdclk */
> -	for_each_intel_crtc(state->dev, intel_crtc)
> -		if (intel_crtc->base.state->enable)
> -			*prepare_pipes |= (1 << intel_crtc->pipe);
> -
> -	return 0;
> -}
> -
>  static void vlv_program_pfi_credits(struct drm_i915_private *dev_priv)
>  {
>  	unsigned int credits, default_credits;
> @@ -9265,21 +9243,47 @@ static void broadwell_set_cdclk(struct drm_device *dev, int cdclk)
>  	     cdclk, dev_priv->cdclk_freq);
>  }
>  
> -static void haswell_modeset_global_pipes(struct drm_atomic_state *state,
> -					 unsigned *prepare_pipes)
> +static int intel_calc_cdclk(struct drm_device *dev, int max_pixclk)
> +{
> +	struct drm_i915_private *dev_priv = dev->dev_private;
> +	int cdclk = 200000;
> +
> +	if (IS_VALLEYVIEW(dev))
> +		cdclk = valleyview_calc_cdclk(dev_priv, max_pixclk);
> +	else if (IS_HASWELL(dev) || IS_BROADWELL(dev))
> +		cdclk = haswell_calc_cdclk(dev_priv, max_pixclk);
> +
> +	return cdclk;
> +}
> +
> +static void intel_modeset_global_pipes(struct drm_atomic_state *state,
> +					 unsigned *prepare_pipes,
> +					 unsigned disable_pipes)
>  {
>  	struct drm_device *dev = state->dev;
>  	struct drm_i915_private *dev_priv = dev->dev_private;
>  	struct intel_crtc *crtc;
> -	int max_pixel_rate = ilk_max_pixel_rate(dev_priv);
> +	int max_pixclk;
>  
> -	if (haswell_calc_cdclk(dev_priv, max_pixel_rate) == dev_priv->cdclk_freq)
> +       /* this modeset is valid only for VLV, HSW, and BDW */
> +	if (!IS_VALLEYVIEW(dev) && !IS_HASWELL(dev) && !IS_BROADWELL(dev))
> +		return;
> +
> +	if (IS_VALLEYVIEW(dev))
> +		max_pixclk = intel_mode_max_pixclk(state);
> +	else if (IS_HASWELL(dev) || IS_BROADWELL(dev))
> +		max_pixclk = ilk_max_pixel_rate(dev_priv);
> +
> +	if (intel_calc_cdclk(dev, max_pixclk) == dev_priv->cdclk_freq)
>  		return;
>  
>  	/* disable/enable all currently active pipes while we change cdclk */
>  	for_each_intel_crtc(dev, crtc)
> -		if (crtc->base.enabled)
> +		if (crtc->base.state->enable)
>  			*prepare_pipes |= 1 << crtc->pipe;
> +
> +	/* may have added more to prepare_pipes than we should */
> +	*prepare_pipes &= ~disable_pipes;
>  }
>  
>  static void haswell_modeset_global_resources(struct drm_atomic_state *state)
> @@ -12453,17 +12457,7 @@ static int __intel_set_mode(struct drm_crtc *crtc,
>  	 * mode set on this crtc.  For other crtcs we need to use the
>  	 * adjusted_mode bits in the crtc directly.
>  	 */
> -	if (IS_VALLEYVIEW(dev) || IS_HASWELL(dev) || IS_BROADWELL(dev)) {
> -		if (IS_VALLEYVIEW(dev))
> -			valleyview_modeset_global_pipes(state, &prepare_pipes);
> -		else
> -			haswell_modeset_global_pipes(state, &prepare_pipes);
> -		if (ret)
> -			goto done;
> -
> -		/* may have added more to prepare_pipes than we should */
> -		prepare_pipes &= ~disable_pipes;
> -	}
> +	intel_modeset_global_pipes(state, &prepare_pipes, disable_pipes);
>  
>  	ret = __intel_set_mode_setup_plls(state, modeset_pipes, disable_pipes);
>  	if (ret)
> -- 
> 1.9.1
> 
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-- 
Ville Syrjälä
Intel OTC