aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/gpu/drm/mga/mga_drv.c
diff options
context:
space:
mode:
authorJesse Barnes <jbarnes@virtuousgeek.org>2008-09-30 15:14:26 -0400
committerDave Airlie <airlied@linux.ie>2008-10-17 17:10:11 -0400
commit0a3e67a4caac273a3bfc4ced3da364830b1ab241 (patch)
tree02a2e5e76d9dffcb556d09b0eee4d34ebe5d81cb /drivers/gpu/drm/mga/mga_drv.c
parent2df68b439fcb97a4c55f81516206ef4ee325e28d (diff)
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/mga/mga_drv.c')
-rw-r--r--drivers/gpu/drm/mga/mga_drv.c29
1 files changed, 15 insertions, 14 deletions
diff --git a/drivers/gpu/drm/mga/mga_drv.c b/drivers/gpu/drm/mga/mga_drv.c
index 5572939fc7d1..97ee566ef749 100644
--- a/drivers/gpu/drm/mga/mga_drv.c
+++ b/drivers/gpu/drm/mga/mga_drv.c
@@ -45,15 +45,16 @@ static struct pci_device_id pciidlist[] = {
45static struct drm_driver driver = { 45static struct drm_driver driver = {
46 .driver_features = 46 .driver_features =
47 DRIVER_USE_AGP | DRIVER_USE_MTRR | DRIVER_PCI_DMA | 47 DRIVER_USE_AGP | DRIVER_USE_MTRR | DRIVER_PCI_DMA |
48 DRIVER_HAVE_DMA | DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | 48 DRIVER_HAVE_DMA | DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED,
49 DRIVER_IRQ_VBL,
50 .dev_priv_size = sizeof(drm_mga_buf_priv_t), 49 .dev_priv_size = sizeof(drm_mga_buf_priv_t),
51 .load = mga_driver_load, 50 .load = mga_driver_load,
52 .unload = mga_driver_unload, 51 .unload = mga_driver_unload,
53 .lastclose = mga_driver_lastclose, 52 .lastclose = mga_driver_lastclose,
54 .dma_quiescent = mga_driver_dma_quiescent, 53 .dma_quiescent = mga_driver_dma_quiescent,
55 .device_is_agp = mga_driver_device_is_agp, 54 .device_is_agp = mga_driver_device_is_agp,
56 .vblank_wait = mga_driver_vblank_wait, 55 .get_vblank_counter = mga_get_vblank_counter,
56 .enable_vblank = mga_enable_vblank,
57 .disable_vblank = mga_disable_vblank,
57 .irq_preinstall = mga_driver_irq_preinstall, 58 .irq_preinstall = mga_driver_irq_preinstall,
58 .irq_postinstall = mga_driver_irq_postinstall, 59 .irq_postinstall = mga_driver_irq_postinstall,
59 .irq_uninstall = mga_driver_irq_uninstall, 60 .irq_uninstall = mga_driver_irq_uninstall,
@@ -64,20 +65,20 @@ static struct drm_driver driver = {
64 .ioctls = mga_ioctls, 65 .ioctls = mga_ioctls,
65 .dma_ioctl = mga_dma_buffers, 66 .dma_ioctl = mga_dma_buffers,
66 .fops = { 67 .fops = {
67 .owner = THIS_MODULE, 68 .owner = THIS_MODULE,
68 .open = drm_open, 69 .open = drm_open,
69 .release = drm_release, 70 .release = drm_release,
70 .ioctl = drm_ioctl, 71 .ioctl = drm_ioctl,
71 .mmap = drm_mmap, 72 .mmap = drm_mmap,
72 .poll = drm_poll, 73 .poll = drm_poll,
73 .fasync = drm_fasync, 74 .fasync = drm_fasync,
74#ifdef CONFIG_COMPAT 75#ifdef CONFIG_COMPAT
75 .compat_ioctl = mga_compat_ioctl, 76 .compat_ioctl = mga_compat_ioctl,
76#endif 77#endif
77 }, 78 },
78 .pci_driver = { 79 .pci_driver = {
79 .name = DRIVER_NAME, 80 .name = DRIVER_NAME,
80 .id_table = pciidlist, 81 .id_table = pciidlist,
81 }, 82 },
82 83
83 .name = DRIVER_NAME, 84 .name = DRIVER_NAME,