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>
This commit is contained in:
parent
08a370fa75
commit
d668046c13
|
@ -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);
|
||||
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
|
@ -346,6 +346,7 @@
|
|||
# define RADEON_TVPLL_PWRMGT_OFF (1 << 30)
|
||||
# define RADEON_TVCLK_TURNOFF (1 << 31)
|
||||
#define RADEON_PLL_PWRMGT_CNTL 0x0015 /* PLL */
|
||||
# define RADEON_PM_MODE_SEL (1 << 13)
|
||||
# define RADEON_TCL_BYPASS_DISABLE (1 << 20)
|
||||
#define RADEON_CLR_CMP_CLR_3D 0x1a24
|
||||
#define RADEON_CLR_CMP_CLR_DST 0x15c8
|
||||
|
|
Loading…
Reference in a new issue