diff options
| author | Dave Airlie <airlied@redhat.com> | 2010-03-31 13:41:35 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2010-04-01 12:50:46 +1000 |
| commit | d668046c13024d74af7d04a124ba55f406380fe7 (patch) | |
| tree | 41ef48d72324f88211e279a56bd7f43563a3e366 /drivers/gpu/drm/radeon/r100.c | |
| parent | 08a370fa758fae7e387274ca3571ce625d7f829b (diff) | |
drm/radeon/kms: enable ACPI powermanagement mode on radeon gpus.
Some GPUs have an APM/ACPI PM mode selection switch and some BIOSes
set this to APM. We really want this in ACPI mode for Linux.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/r100.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/r100.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c index c8f4b0300b7..3ae51ada1ab 100644 --- a/drivers/gpu/drm/radeon/r100.c +++ b/drivers/gpu/drm/radeon/r100.c @@ -1809,6 +1809,7 @@ void r100_set_common_regs(struct radeon_device *rdev) { struct drm_device *dev = rdev->ddev; bool force_dac2 = false; + u32 tmp; /* set these so they don't interfere with anything */ WREG32(RADEON_OV0_SCALE_CNTL, 0); @@ -1880,6 +1881,12 @@ void r100_set_common_regs(struct radeon_device *rdev) WREG32(RADEON_DISP_HW_DEBUG, disp_hw_debug); WREG32(RADEON_DAC_CNTL2, dac2_cntl); } + + /* switch PM block to ACPI mode */ + tmp = RREG32_PLL(RADEON_PLL_PWRMGT_CNTL); + tmp &= ~RADEON_PM_MODE_SEL; + WREG32_PLL(RADEON_PLL_PWRMGT_CNTL, tmp); + } /* |