Re: [PATCH 11/16] drm/i915: Enable CRC interrupts on pre-gen5/vlv

["Ville Syrjälä" <ville.syrjala@linux.intel.com>]

On Wed, Oct 16, 2013 at 10:55:56PM +0200, Daniel Vetter wrote:
> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
> ---
>  drivers/gpu/drm/i915/i915_irq.c | 21 ++++++++++++++++++++-
>  1 file changed, 20 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
> index b31e7ca..5c3baa0 100644
> --- a/drivers/gpu/drm/i915/i915_irq.c
> +++ b/drivers/gpu/drm/i915/i915_irq.c
> @@ -2574,7 +2574,8 @@ static int valleyview_irq_postinstall(struct drm_device *dev)
>  {
>  	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
>  	u32 enable_mask;
> -	u32 pipestat_enable = PLANE_FLIP_DONE_INT_EN_VLV;
> +	u32 pipestat_enable = PLANE_FLIP_DONE_INT_EN_VLV |
> +		PIPE_CRC_DONE_ENABLE;
>  	unsigned long irqflags;
>  
>  	enable_mask = I915_DISPLAY_PORT_INTERRUPT;
> @@ -2697,6 +2698,7 @@ static void i8xx_irq_preinstall(struct drm_device * dev)
>  static int i8xx_irq_postinstall(struct drm_device *dev)
>  {
>  	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
> +	unsigned long irqflags;
>  
>  	I915_WRITE16(EMR,
>  		     ~(I915_ERROR_PAGE_TABLE | I915_ERROR_MEMORY_REFRESH));
> @@ -2717,6 +2719,13 @@ static int i8xx_irq_postinstall(struct drm_device *dev)
>  		     I915_USER_INTERRUPT);
>  	POSTING_READ16(IER);
>  
> +	/* Interrupt setup is already guaranteed to be single-threaded, this is
> +	 * just to make the assert_spin_locked check happy. */
> +	spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
> +	i915_enable_pipestat(dev_priv, 0, PIPE_CRC_DONE_ENABLE);
> +	i915_enable_pipestat(dev_priv, 1, PIPE_CRC_DONE_ENABLE);

Could use PIPE_A/B instead of raw numbers. Maybe a separate patch
to fix it all up since we're already using raw numbers in some
other places in i915_irq.c.

> +	spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
> +
>  	return 0;
>  }
>  
> @@ -2857,6 +2866,7 @@ static int i915_irq_postinstall(struct drm_device *dev)
>  {
>  	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
>  	u32 enable_mask;
> +	unsigned long irqflags;
>  
>  	I915_WRITE(EMR, ~(I915_ERROR_PAGE_TABLE | I915_ERROR_MEMORY_REFRESH));
>  
> @@ -2892,6 +2902,13 @@ static int i915_irq_postinstall(struct drm_device *dev)
>  
>  	i915_enable_asle_pipestat(dev);
>  
> +	/* Interrupt setup is already guaranteed to be single-threaded, this is
> +	 * just to make the assert_spin_locked check happy. */
> +	spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
> +	i915_enable_pipestat(dev_priv, 0, PIPE_CRC_DONE_ENABLE);
> +	i915_enable_pipestat(dev_priv, 1, PIPE_CRC_DONE_ENABLE);
> +	spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
> +
>  	return 0;
>  }
>  
> @@ -3105,6 +3122,8 @@ static int i965_irq_postinstall(struct drm_device *dev)
>  	 * just to make the assert_spin_locked check happy. */
>  	spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
>  	i915_enable_pipestat(dev_priv, 0, PIPE_GMBUS_EVENT_ENABLE);
> +	i915_enable_pipestat(dev_priv, 0, PIPE_CRC_DONE_ENABLE);
> +	i915_enable_pipestat(dev_priv, 1, PIPE_CRC_DONE_ENABLE);
>  	spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
>  
>  	/*
> -- 
> 1.8.4.rc3
> 
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/intel-gfx

-- 
Ville Syrjälä
Intel OTC