drm/radeon/cik: add rlc helpers for DPM
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c
index a36e98c..727c296 100644
--- a/drivers/gpu/drm/radeon/cik.c
+++ b/drivers/gpu/drm/radeon/cik.c
@@ -5587,6 +5587,35 @@
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
*