From 83f256e60e44d83304df44cead6617212fe437b4 Mon Sep 17 00:00:00 2001 From: Keith Packard Date: Mon, 19 Jun 2006 20:15:53 +0000 Subject: Add i915 ioctls to configure pipes for vblank interrupt. i915 vblanks can be generated from either pipe a or b, however a disabled pipe generates no interrupts. This change allows the X server to select which pipe generates vblank interrupts. --- shared-core/i915_irq.c | 58 ++++++++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 56 insertions(+), 2 deletions(-) (limited to 'shared-core/i915_irq.c') diff --git a/shared-core/i915_irq.c b/shared-core/i915_irq.c index cd718337..9721f49a 100644 --- a/shared-core/i915_irq.c +++ b/shared-core/i915_irq.c @@ -45,7 +45,7 @@ irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS) temp = I915_READ16(I915REG_INT_IDENTITY_R); - temp &= (USER_INT_FLAG | VSYNC_PIPEA_FLAG); + temp &= (USER_INT_FLAG | VSYNC_PIPEA_FLAG | VSYNC_PIPEB_FLAG); DRM_DEBUG("%s flag=%08x\n", __FUNCTION__, temp); @@ -59,7 +59,7 @@ irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS) if (temp & USER_INT_FLAG) DRM_WAKEUP(&dev_priv->irq_queue); - if (temp & VSYNC_PIPEA_FLAG) { + if (temp & (VSYNC_PIPEA_FLAG | VSYNC_PIPEB_FLAG)) { atomic_inc(&dev->vbl_received); DRM_WAKEUP(&dev->vbl_queue); drm_vbl_send_signals(dev); @@ -182,6 +182,60 @@ int i915_irq_wait(DRM_IOCTL_ARGS) return i915_wait_irq(dev, irqwait.irq_seq); } +/* Set the vblank monitor pipe + */ +int i915_vblank_pipe_set(DRM_IOCTL_ARGS) +{ + DRM_DEVICE; + drm_i915_private_t *dev_priv = dev->dev_private; + drm_i915_vblank_pipe_t pipe; + u16 flag; + + if (!dev_priv) { + DRM_ERROR("%s called with no initialization\n", __FUNCTION__); + return DRM_ERR(EINVAL); + } + + DRM_COPY_FROM_USER_IOCTL(pipe, (drm_i915_vblank_pipe_t __user *) data, + sizeof(pipe)); + + flag = 0; + if (pipe.pipe & DRM_I915_VBLANK_PIPE_A) + flag |= VSYNC_PIPEA_FLAG; + if (pipe.pipe & DRM_I915_VBLANK_PIPE_B) + flag |= VSYNC_PIPEB_FLAG; + if (pipe.pipe & ~(DRM_I915_VBLANK_PIPE_A|DRM_I915_VBLANK_PIPE_B)) { + DRM_ERROR("%s called with invalid pipe 0x%lx\n", + __FUNCTION__, pipe.pipe); + return DRM_ERR(EINVAL); + } + I915_WRITE16(I915REG_INT_ENABLE_R, USER_INT_FLAG | flag); + return 0; +} + +int i915_vblank_pipe_get(DRM_IOCTL_ARGS) +{ + DRM_DEVICE; + drm_i915_private_t *dev_priv = dev->dev_private; + drm_i915_vblank_pipe_t pipe; + u16 flag; + + if (!dev_priv) { + DRM_ERROR("%s called with no initialization\n", __FUNCTION__); + return DRM_ERR(EINVAL); + } + + flag = I915_READ(I915REG_INT_ENABLE_R); + pipe.pipe = 0; + if (flag & VSYNC_PIPEA_FLAG) + pipe.pipe |= DRM_I915_VBLANK_PIPE_A; + if (flag & VSYNC_PIPEB_FLAG) + pipe.pipe |= DRM_I915_VBLANK_PIPE_B; + DRM_COPY_TO_USER_IOCTL((drm_i915_vblank_pipe_t __user *) data, pipe, + sizeof(pipe)); + return 0; +} + /* drm_dma.h hooks */ void i915_driver_irq_preinstall(drm_device_t * dev) -- cgit v1.2.3