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authorJesse Barnes <jbarnes@virtuousgeek.org>2008-09-30 12:14:26 -0700
committerDave Airlie <airlied@linux.ie>2008-10-18 07:10:11 +1000
commit0a3e67a4caac273a3bfc4ced3da364830b1ab241 (patch)
tree02a2e5e76d9dffcb556d09b0eee4d34ebe5d81cb /drivers/gpu/drm/radeon/radeon_drv.c
parent2df68b439fcb97a4c55f81516206ef4ee325e28d (diff)
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drm: Rework vblank-wait handling to allow interrupt reduction.
Previously, drivers supporting vblank interrupt waits would run the interrupt all the time, or all the time that any 3d client was running, preventing the CPU from sleeping for long when the system was otherwise idle. Now, interrupts are disabled any time that no client is waiting on a vblank event. The new method uses vblank counters on the chipsets when the interrupts are turned off, rather than counting interrupts, so that we can continue to present accurate vblank numbers. Co-author: Michel Dänzer <michel@tungstengraphics.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_drv.c')
-rw-r--r--drivers/gpu/drm/radeon/radeon_drv.c32
1 files changed, 28 insertions, 4 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c
index 637bd7faf13..71af746a4e4 100644
--- a/drivers/gpu/drm/radeon/radeon_drv.c
+++ b/drivers/gpu/drm/radeon/radeon_drv.c
@@ -52,6 +52,28 @@ static int dri_library_name(struct drm_device *dev, char *buf)
"r300"));
}
+static int radeon_suspend(struct drm_device *dev, pm_message_t state)
+{
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+
+ /* Disable *all* interrupts */
+ if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_RS690)
+ RADEON_WRITE(R500_DxMODE_INT_MASK, 0);
+ RADEON_WRITE(RADEON_GEN_INT_CNTL, 0);
+ return 0;
+}
+
+static int radeon_resume(struct drm_device *dev)
+{
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+
+ /* Restore interrupt registers */
+ if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_RS690)
+ RADEON_WRITE(R500_DxMODE_INT_MASK, dev_priv->r500_disp_irq_reg);
+ RADEON_WRITE(RADEON_GEN_INT_CNTL, dev_priv->irq_enable_reg);
+ return 0;
+}
+
static struct pci_device_id pciidlist[] = {
radeon_PCI_IDS
};
@@ -59,8 +81,7 @@ static struct pci_device_id pciidlist[] = {
static struct drm_driver driver = {
.driver_features =
DRIVER_USE_AGP | DRIVER_USE_MTRR | DRIVER_PCI_DMA | DRIVER_SG |
- DRIVER_HAVE_IRQ | DRIVER_HAVE_DMA | DRIVER_IRQ_SHARED |
- DRIVER_IRQ_VBL | DRIVER_IRQ_VBL2,
+ DRIVER_HAVE_IRQ | DRIVER_HAVE_DMA | DRIVER_IRQ_SHARED,
.dev_priv_size = sizeof(drm_radeon_buf_priv_t),
.load = radeon_driver_load,
.firstopen = radeon_driver_firstopen,
@@ -69,8 +90,11 @@ static struct drm_driver driver = {
.postclose = radeon_driver_postclose,
.lastclose = radeon_driver_lastclose,
.unload = radeon_driver_unload,
- .vblank_wait = radeon_driver_vblank_wait,
- .vblank_wait2 = radeon_driver_vblank_wait2,
+ .suspend = radeon_suspend,
+ .resume = radeon_resume,
+ .get_vblank_counter = radeon_get_vblank_counter,
+ .enable_vblank = radeon_enable_vblank,
+ .disable_vblank = radeon_disable_vblank,
.dri_library_name = dri_library_name,
.irq_preinstall = radeon_driver_irq_preinstall,
.irq_postinstall = radeon_driver_irq_postinstall,