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authorDave Airlie <airlied@redhat.com>2009-09-21 14:33:58 +1000
committerDave Airlie <airlied@redhat.com>2009-09-21 15:00:27 +1000
commit28d520433b6375740990ab99d69b0d0067fd656b (patch)
treed3affea0fb69f84b9c924c03d78c5df23946306f /drivers/gpu/drm/radeon/r600.c
parentaadd4e17452d3d5c2269cd2b000b7de7cfb6c79e (diff)
drm/vgaarb: add VGA arbitration support to the drm and kms.
VGA arb requires DRM support for non-kms drivers, to turn on/off irqs when disabling the mem/io regions. VGA arb requires KMS support for GPUs where we can turn off VGA decoding. Currently we know how to do this for intel and radeon kms drivers, which allows them to be removed from the arbiter. This patch comes from Fedora rawhide kernel. Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/r600.c')
-rw-r--r--drivers/gpu/drm/radeon/r600.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index 5f42fad1919..eab31c1d6df 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -1499,6 +1499,20 @@ int r600_startup(struct radeon_device *rdev)
return 0;
}
+void r600_vga_set_state(struct radeon_device *rdev, bool state)
+{
+ uint32_t temp;
+
+ temp = RREG32(CONFIG_CNTL);
+ if (state == false) {
+ temp &= ~(1<<0);
+ temp |= (1<<1);
+ } else {
+ temp &= ~(1<<1);
+ }
+ WREG32(CONFIG_CNTL, temp);
+}
+
int r600_resume(struct radeon_device *rdev)
{
int r;