Re: [PATCH 2/2] drm/i915: refactor ilk display interrupt handling

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Mon, Oct 21, 2013 at 06:04:36PM +0200, Daniel Vetter wrote:
> - Use a for_each_loop and add the corresponding #defines.
> - Drop the _ILK postfix on the existing DE_PIPE_VBLANK macro for
>   consistency with everything else.
> - Also use macros (and add the missing one for plane flips) for the
>   ivb display interrupt handler.
> 
> Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
> ---
>  drivers/gpu/drm/i915/i915_irq.c | 50 +++++++++++++++++------------------------
>  drivers/gpu/drm/i915/i915_reg.h |  7 ++++--
>  2 files changed, 26 insertions(+), 31 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
> index ce94afc..062a6d6 100644
> --- a/drivers/gpu/drm/i915/i915_irq.c
> +++ b/drivers/gpu/drm/i915/i915_irq.c
> @@ -1535,6 +1535,7 @@ static void cpt_irq_handler(struct drm_device *dev, u32 pch_iir)
>  static void ilk_display_irq_handler(struct drm_device *dev, u32 de_iir)
>  {
>  	struct drm_i915_private *dev_priv = dev->dev_private;
> +	enum pipe pipe;
>  
>  	if (de_iir & DE_AUX_CHANNEL_A)
>  		dp_aux_irq_handler(dev);
> @@ -1542,37 +1543,26 @@ static void ilk_display_irq_handler(struct drm_device *dev, u32 de_iir)
>  	if (de_iir & DE_GSE)
>  		intel_opregion_asle_intr(dev);
>  
> -	if (de_iir & DE_PIPEA_VBLANK)
> -		drm_handle_vblank(dev, 0);
> -
> -	if (de_iir & DE_PIPEB_VBLANK)
> -		drm_handle_vblank(dev, 1);
> -
>  	if (de_iir & DE_POISON)
>  		DRM_ERROR("Poison interrupt\n");
>  
> -	if (de_iir & DE_PIPEA_FIFO_UNDERRUN)
> -		if (intel_set_cpu_fifo_underrun_reporting(dev, PIPE_A, false))
> -			DRM_DEBUG_DRIVER("Pipe A FIFO underrun\n");
> -
> -	if (de_iir & DE_PIPEB_FIFO_UNDERRUN)
> -		if (intel_set_cpu_fifo_underrun_reporting(dev, PIPE_B, false))
> -			DRM_DEBUG_DRIVER("Pipe B FIFO underrun\n");
> -
> -	if (de_iir & DE_PIPEA_CRC_DONE)
> -		i9xx_pipe_crc_irq_handler(dev, PIPE_A);
> +	for_each_pipe(pipe) {
> +		if (de_iir & DE_PIPE_VBLANK(pipe))
> +			drm_handle_vblank(dev, pipe);
>  
> -	if (de_iir & DE_PIPEB_CRC_DONE)
> -		i9xx_pipe_crc_irq_handler(dev, PIPE_B);
> +		if (de_iir & DE_PIPE_FIFO_UNDERRUN(pipe))
> +			if (intel_set_cpu_fifo_underrun_reporting(dev, pipe, false))
> +				DRM_DEBUG_DRIVER("Pipe %c FIFO underrun\n",
> +						 pipe_name(pipe));
>  
> -	if (de_iir & DE_PLANEA_FLIP_DONE) {
> -		intel_prepare_page_flip(dev, 0);
> -		intel_finish_page_flip_plane(dev, 0);
> -	}
> +		if (de_iir & DE_PIPE_CRC_DONE(pipe))
> +			i9xx_pipe_crc_irq_handler(dev, pipe);
>  
> -	if (de_iir & DE_PLANEB_FLIP_DONE) {
> -		intel_prepare_page_flip(dev, 1);
> -		intel_finish_page_flip_plane(dev, 1);
> +		/* plane/pipes map 1:1 on ilk+ */
> +		if (de_iir & DE_PLANE_FLIP_DONE(pipe)) {
> +			intel_prepare_page_flip(dev, pipe);
> +			intel_finish_page_flip_plane(dev, pipe);
> +		}
>  	}
>  
>  	/* check event from PCH */
> @@ -1607,9 +1597,11 @@ static void ivb_display_irq_handler(struct drm_device *dev, u32 de_iir)
>  		intel_opregion_asle_intr(dev);
>  
>  	for_each_pipe(i) {
> -		if (de_iir & (DE_PIPEA_VBLANK_IVB << (5 * i)))
> +		if (de_iir & (DE_PIPE_VBLANK_IVB(i)))
                             ^                     ^

>  			drm_handle_vblank(dev, i);
> -		if (de_iir & (DE_PLANEA_FLIP_DONE_IVB << (5 * i))) {
> +
> +		/* plane/pipes map 1:1 on ilk+ */
> +		if (de_iir & (DE_PLANE_FLIP_DONE_IVB(i))) {
                             ^                         ^

Just a minor complaint about the useless parens.

But otherwise both patches look good, so:
Reviewed-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>

>  			intel_prepare_page_flip(dev, i);
>  			intel_finish_page_flip_plane(dev, i);
>  		}
> @@ -2012,7 +2004,7 @@ static int ironlake_enable_vblank(struct drm_device *dev, int pipe)
>  	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
>  	unsigned long irqflags;
>  	uint32_t bit = (INTEL_INFO(dev)->gen >= 7) ? DE_PIPE_VBLANK_IVB(pipe) :
> -						     DE_PIPE_VBLANK_ILK(pipe);
> +						     DE_PIPE_VBLANK(pipe);
>  
>  	if (!i915_pipe_enabled(dev, pipe))
>  		return -EINVAL;
> @@ -2070,7 +2062,7 @@ static void ironlake_disable_vblank(struct drm_device *dev, int pipe)
>  	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
>  	unsigned long irqflags;
>  	uint32_t bit = (INTEL_INFO(dev)->gen >= 7) ? DE_PIPE_VBLANK_IVB(pipe) :
> -						     DE_PIPE_VBLANK_ILK(pipe);
> +						     DE_PIPE_VBLANK(pipe);
>  
>  	spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
>  	ironlake_disable_display_irq(dev_priv, bit);
> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> index c97fc94..1af080a 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -3928,6 +3928,7 @@
>  #define DE_SPRITEA_FLIP_DONE    (1 << 28)
>  #define DE_PLANEB_FLIP_DONE     (1 << 27)
>  #define DE_PLANEA_FLIP_DONE     (1 << 26)
> +#define DE_PLANE_FLIP_DONE(plane) (1 << (26 + (plane)))
>  #define DE_PCU_EVENT            (1 << 25)
>  #define DE_GTT_FAULT            (1 << 24)
>  #define DE_POISON               (1 << 23)
> @@ -3944,12 +3945,15 @@
>  #define DE_PIPEB_CRC_DONE	(1 << 10)
>  #define DE_PIPEB_FIFO_UNDERRUN  (1 << 8)
>  #define DE_PIPEA_VBLANK         (1 << 7)
> +#define DE_PIPE_VBLANK(pipe)    (1 << (7 + 8*(pipe)))
>  #define DE_PIPEA_EVEN_FIELD     (1 << 6)
>  #define DE_PIPEA_ODD_FIELD      (1 << 5)
>  #define DE_PIPEA_LINE_COMPARE   (1 << 4)
>  #define DE_PIPEA_VSYNC          (1 << 3)
>  #define DE_PIPEA_CRC_DONE	(1 << 2)
> +#define DE_PIPE_CRC_DONE(pipe)	(1 << (2 + 8*(pipe)))
>  #define DE_PIPEA_FIFO_UNDERRUN  (1 << 0)
> +#define DE_PIPE_FIFO_UNDERRUN(pipe)  (1 << (8*(pipe)))
>  
>  /* More Ivybridge lolz */
>  #define DE_ERR_INT_IVB			(1<<30)
> @@ -3965,9 +3969,8 @@
>  #define DE_PIPEB_VBLANK_IVB		(1<<5)
>  #define DE_SPRITEA_FLIP_DONE_IVB	(1<<4)
>  #define DE_PLANEA_FLIP_DONE_IVB		(1<<3)
> +#define DE_PLANE_FLIP_DONE_IVB(plane)	(1<< (3 + 5*(plane)))
>  #define DE_PIPEA_VBLANK_IVB		(1<<0)
> -
> -#define DE_PIPE_VBLANK_ILK(pipe)	(1 << ((pipe * 8) + 7))
>  #define DE_PIPE_VBLANK_IVB(pipe)	(1 << (pipe * 5))
>  
>  #define VLV_MASTER_IER			0x4400c /* Gunit master IER */
> -- 
> 1.8.4.rc3

-- 
Ville Syrjälä
Intel OTC
_______________________________________________
Intel-gfx mailing list
Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
http://lists.freedesktop.org/mailman/listinfo/intel-gfx





[Index of Archives]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]
  Powered by Linux