From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> Follow the same ordering rules for the IIR,IER,IMR writes on vlv/chv that we do on other gen5+ platforms. Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> --- drivers/gpu/drm/i915/i915_irq.c | 29 ++++++++++++++++++----------- 1 file changed, 18 insertions(+), 11 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 1e4062d..589ae51 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -3128,10 +3128,11 @@ static void valleyview_irq_preinstall(struct drm_device *dev) I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); for_each_pipe(dev_priv, pipe) I915_WRITE(PIPESTAT(pipe), 0xffff); - I915_WRITE(VLV_IIR, 0xffffffff); I915_WRITE(VLV_IMR, 0xffffffff); I915_WRITE(VLV_IER, 0x0); - POSTING_READ(VLV_IER); + I915_WRITE(VLV_IIR, 0xffffffff); + I915_WRITE(VLV_IIR, 0xffffffff); + POSTING_READ(VLV_IIR); } static void gen8_gt_irq_reset(struct drm_i915_private *dev_priv) @@ -3199,6 +3200,7 @@ static void cherryview_irq_preinstall(struct drm_device *dev) I915_WRITE(VLV_IMR, 0xffffffff); I915_WRITE(VLV_IER, 0x0); I915_WRITE(VLV_IIR, 0xffffffff); + I915_WRITE(VLV_IIR, 0xffffffff); POSTING_READ(VLV_IIR); } @@ -3362,9 +3364,9 @@ static void valleyview_display_irqs_install(struct drm_i915_private *dev_priv) I915_WRITE(VLV_IIR, iir_mask); I915_WRITE(VLV_IIR, iir_mask); - I915_WRITE(VLV_IMR, dev_priv->irq_mask); I915_WRITE(VLV_IER, ~dev_priv->irq_mask); - POSTING_READ(VLV_IER); + I915_WRITE(VLV_IMR, dev_priv->irq_mask); + POSTING_READ(VLV_IMR); } static void valleyview_display_irqs_uninstall(struct drm_i915_private *dev_priv) @@ -3377,8 +3379,8 @@ static void valleyview_display_irqs_uninstall(struct drm_i915_private *dev_priv) I915_DISPLAY_PIPE_B_EVENT_INTERRUPT; dev_priv->irq_mask |= iir_mask; - I915_WRITE(VLV_IER, ~dev_priv->irq_mask); I915_WRITE(VLV_IMR, dev_priv->irq_mask); + I915_WRITE(VLV_IER, ~dev_priv->irq_mask); I915_WRITE(VLV_IIR, iir_mask); I915_WRITE(VLV_IIR, iir_mask); POSTING_READ(VLV_IIR); @@ -3432,10 +3434,11 @@ static int valleyview_irq_postinstall(struct drm_device *dev) I915_WRITE(PORT_HOTPLUG_EN, 0); POSTING_READ(PORT_HOTPLUG_EN); - I915_WRITE(VLV_IMR, dev_priv->irq_mask); - I915_WRITE(VLV_IER, ~dev_priv->irq_mask); I915_WRITE(VLV_IIR, 0xffffffff); - POSTING_READ(VLV_IER); + I915_WRITE(VLV_IIR, 0xffffffff); + I915_WRITE(VLV_IER, ~dev_priv->irq_mask); + I915_WRITE(VLV_IMR, dev_priv->irq_mask); + POSTING_READ(VLV_IMR); /* Interrupt setup is already guaranteed to be single-threaded, this is * just to make the assert_spin_locked check happy. */ @@ -3559,8 +3562,10 @@ static int cherryview_irq_postinstall(struct drm_device *dev) spin_unlock_irq(&dev_priv->irq_lock); I915_WRITE(VLV_IIR, 0xffffffff); - I915_WRITE(VLV_IMR, dev_priv->irq_mask); + I915_WRITE(VLV_IIR, 0xffffffff); I915_WRITE(VLV_IER, enable_mask); + I915_WRITE(VLV_IMR, dev_priv->irq_mask); + POSTING_READ(VLV_IMR); gen8_gt_irq_postinstall(dev_priv); @@ -3606,10 +3611,11 @@ static void valleyview_irq_uninstall(struct drm_device *dev) dev_priv->irq_mask = 0; - I915_WRITE(VLV_IIR, 0xffffffff); I915_WRITE(VLV_IMR, 0xffffffff); I915_WRITE(VLV_IER, 0x0); - POSTING_READ(VLV_IER); + I915_WRITE(VLV_IIR, 0xffffffff); + I915_WRITE(VLV_IIR, 0xffffffff); + POSTING_READ(VLV_IIR); } static void cherryview_irq_uninstall(struct drm_device *dev) @@ -3636,6 +3642,7 @@ static void cherryview_irq_uninstall(struct drm_device *dev) I915_WRITE(VLV_IMR, 0xffffffff); I915_WRITE(VLV_IER, 0x0); I915_WRITE(VLV_IIR, 0xffffffff); + I915_WRITE(VLV_IIR, 0xffffffff); POSTING_READ(VLV_IIR); } -- 2.0.4 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
