2014-10-30 15:43 GMT-02:00 <ville.syrjala@xxxxxxxxxxxxxxx>:
> From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
>
> Throw away the hand rolled display irq setup code on chv, and instead
> just call vlv_display_irq_postinstall() and vlv_display_irq_uninstall().
>
> Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/i915/i915_irq.c | 37 ++-----------------------------------
> 1 file changed, 2 insertions(+), 35 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
> index 628a129..722f73c 100644
> --- a/drivers/gpu/drm/i915/i915_irq.c
> +++ b/drivers/gpu/drm/i915/i915_irq.c
> @@ -3540,34 +3540,8 @@ static int gen8_irq_postinstall(struct drm_device *dev)
> static int cherryview_irq_postinstall(struct drm_device *dev)
> {
> struct drm_i915_private *dev_priv = dev->dev_private;
> - u32 enable_mask = I915_DISPLAY_PORT_INTERRUPT |
> - I915_DISPLAY_PIPE_A_EVENT_INTERRUPT |
> - I915_DISPLAY_PIPE_B_EVENT_INTERRUPT |
> - I915_DISPLAY_PIPE_C_EVENT_INTERRUPT;
> - u32 pipestat_enable = PLANE_FLIP_DONE_INT_STATUS_VLV |
> - PIPE_CRC_DONE_INTERRUPT_STATUS;
> - int pipe;
> -
> - /*
> - * Leave vblank interrupts masked initially. enable/disable will
> - * toggle them based on usage.
> - */
> - dev_priv->irq_mask = ~enable_mask;
> -
> - for_each_pipe(dev_priv, pipe)
> - I915_WRITE(PIPESTAT(pipe), 0xffff);
> -
> - spin_lock_irq(&dev_priv->irq_lock);
> - i915_enable_pipestat(dev_priv, PIPE_A, PIPE_GMBUS_INTERRUPT_STATUS);
> - for_each_pipe(dev_priv, pipe)
> - i915_enable_pipestat(dev_priv, pipe, pipestat_enable);
> - spin_unlock_irq(&dev_priv->irq_lock);
>
> - I915_WRITE(VLV_IIR, 0xffffffff);
> - I915_WRITE(VLV_IIR, 0xffffffff);
> - I915_WRITE(VLV_IER, enable_mask);
> - I915_WRITE(VLV_IMR, dev_priv->irq_mask);
> - POSTING_READ(VLV_IMR);
> + vlv_display_irq_postinstall(dev_priv);
This chunk changes the order of stuff a little bit, but seems mostly
equivalent. I'll consider it's ok.
>
> gen8_gt_irq_postinstall(dev_priv);
>
> @@ -3620,7 +3594,6 @@ static void valleyview_irq_uninstall(struct drm_device *dev)
> static void cherryview_irq_uninstall(struct drm_device *dev)
> {
> struct drm_i915_private *dev_priv = dev->dev_private;
> - int pipe;
>
> if (!dev_priv)
> return;
> @@ -3632,13 +3605,7 @@ static void cherryview_irq_uninstall(struct drm_device *dev)
>
> GEN5_IRQ_RESET(GEN8_PCU_);
>
> - I915_WRITE(PORT_HOTPLUG_EN, 0);
> - I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT));
> -
> - for_each_pipe(dev_priv, pipe)
> - I915_WRITE(PIPESTAT(pipe), 0xffff);
> -
> - GEN5_IRQ_RESET(VLV_);
> + vlv_display_irq_uninstall(dev_priv);
The perfect match for the code you removed seems to be
vlv_display_irq_reset(). Why use vlv_display_irq_uninstall() instead?
> }
>
> static void ironlake_irq_uninstall(struct drm_device *dev)
> --
> 2.0.4
>
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--
Paulo Zanoni
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