From c062df61966405b0be6743bfb0cf300dca2fa7c2 Mon Sep 17 00:00:00 2001 From: Li Peng Date: Sat, 23 Jan 2010 00:12:58 +0800 Subject: [PATCH] drm/i915: enable vblank interrupt on ironlake so far vblank interrupt on ironlake is disabled, this would cause bad gfx performance if userspace calls drm_wait_vblank. This patch enables vblank interrupt on ironlake and follows vblank get/put model. Signed-off-by: Li Peng Acked-by: Zhenyu Wang Signed-off-by: Eric Anholt --- drivers/gpu/drm/i915/i915_irq.c | 30 ++++++++++++++++++---------- drivers/gpu/drm/i915/intel_display.c | 1 + 2 files changed, 20 insertions(+), 11 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 89a071a3e6fb..e7472d82132a 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -309,6 +309,12 @@ irqreturn_t ironlake_irq_handler(struct drm_device *dev) if (de_iir & DE_GSE) ironlake_opregion_gse_intr(dev); + if (de_iir & DE_PIPEA_VBLANK) + drm_handle_vblank(dev, 0); + + if (de_iir & DE_PIPEB_VBLANK) + drm_handle_vblank(dev, 1); + /* check event from PCH */ if ((de_iir & DE_PCH_EVENT) && (pch_iir & SDE_HOTPLUG_MASK)) { @@ -844,11 +850,11 @@ int i915_enable_vblank(struct drm_device *dev, int pipe) if (!(pipeconf & PIPEACONF_ENABLE)) return -EINVAL; - if (IS_IRONLAKE(dev)) - return 0; - spin_lock_irqsave(&dev_priv->user_irq_lock, irqflags); - if (IS_I965G(dev)) + if (IS_IRONLAKE(dev)) + ironlake_enable_display_irq(dev_priv, (pipe == 0) ? + DE_PIPEA_VBLANK: DE_PIPEB_VBLANK); + else if (IS_I965G(dev)) i915_enable_pipestat(dev_priv, pipe, PIPE_START_VBLANK_INTERRUPT_ENABLE); else @@ -866,13 +872,14 @@ void i915_disable_vblank(struct drm_device *dev, int pipe) drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; unsigned long irqflags; - if (IS_IRONLAKE(dev)) - return; - spin_lock_irqsave(&dev_priv->user_irq_lock, irqflags); - i915_disable_pipestat(dev_priv, pipe, - PIPE_VBLANK_INTERRUPT_ENABLE | - PIPE_START_VBLANK_INTERRUPT_ENABLE); + if (IS_IRONLAKE(dev)) + ironlake_disable_display_irq(dev_priv, (pipe == 0) ? + DE_PIPEA_VBLANK: DE_PIPEB_VBLANK); + else + i915_disable_pipestat(dev_priv, pipe, + PIPE_VBLANK_INTERRUPT_ENABLE | + PIPE_START_VBLANK_INTERRUPT_ENABLE); spin_unlock_irqrestore(&dev_priv->user_irq_lock, irqflags); } @@ -1015,7 +1022,8 @@ static int ironlake_irq_postinstall(struct drm_device *dev) { drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; /* enable kind of interrupts always enabled */ - u32 display_mask = DE_MASTER_IRQ_CONTROL | DE_GSE | DE_PCH_EVENT; + u32 display_mask = DE_MASTER_IRQ_CONTROL | DE_GSE | DE_PCH_EVENT | + DE_PIPEA_VBLANK | DE_PIPEB_VBLANK; u32 render_mask = GT_USER_INTERRUPT; u32 hotplug_mask = SDE_CRT_HOTPLUG | SDE_PORTB_HOTPLUG | SDE_PORTC_HOTPLUG | SDE_PORTD_HOTPLUG; diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 45da78ef4a92..2cc489b6629e 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -1638,6 +1638,7 @@ static void ironlake_crtc_dpms(struct drm_crtc *crtc, int mode) case DRM_MODE_DPMS_OFF: DRM_DEBUG_KMS("crtc %d dpms off\n", pipe); + drm_vblank_off(dev, pipe); /* Disable display plane */ temp = I915_READ(dspcntr_reg); if ((temp & DISPLAY_PLANE_ENABLE) != 0) { -- 2.30.2