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| author | Alex Deucher <alexander.deucher@amd.com> | 2013-04-22 20:23:31 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2013-08-30 16:30:12 -0400 |
| commit | a412fce0548105f14e48d25094d98fc87f7c0df4 (patch) | |
| tree | c5fbc81c66465ebe4eb8aefcb2c12dd362f1e579 /drivers/gpu/drm/radeon/cik.c | |
| parent | 84a9d9eeabdca05321a7c890eef485770dade012 (diff) | |
| download | lwn-a412fce0548105f14e48d25094d98fc87f7c0df4.tar.gz lwn-a412fce0548105f14e48d25094d98fc87f7c0df4.zip | |
drm/radeon/cik: add rlc helpers for DPM
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/cik.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/cik.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c index a36e98c9a875..727c296662f1 100644 --- a/drivers/gpu/drm/radeon/cik.c +++ b/drivers/gpu/drm/radeon/cik.c @@ -5587,6 +5587,35 @@ static u32 cik_halt_rlc(struct radeon_device *rdev) return orig; } +void cik_enter_rlc_safe_mode(struct radeon_device *rdev) +{ + u32 tmp, i, mask; + + tmp = REQ | MESSAGE(MSG_ENTER_RLC_SAFE_MODE); + WREG32(RLC_GPR_REG2, tmp); + + mask = GFX_POWER_STATUS | GFX_CLOCK_STATUS; + for (i = 0; i < rdev->usec_timeout; i++) { + if ((RREG32(RLC_GPM_STAT) & mask) == mask) + break; + udelay(1); + } + + for (i = 0; i < rdev->usec_timeout; i++) { + if ((RREG32(RLC_GPR_REG2) & REQ) == 0) + break; + udelay(1); + } +} + +void cik_exit_rlc_safe_mode(struct radeon_device *rdev) +{ + u32 tmp; + + tmp = REQ | MESSAGE(MSG_EXIT_RLC_SAFE_MODE); + WREG32(RLC_GPR_REG2, tmp); +} + /** * cik_rlc_stop - stop the RLC ME * |