drm/radeon/kms: enable misc pm power state features on r5xx, rs6xx
voltage drop, dynamic voltage, dynamic sclk, pcie lane adjust, etc,
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/rs600.c b/drivers/gpu/drm/radeon/rs600.c
index c3890b7..8e0c460 100644
--- a/drivers/gpu/drm/radeon/rs600.c
+++ b/drivers/gpu/drm/radeon/rs600.c
@@ -48,12 +48,11 @@
void rs600_pm_misc(struct radeon_device *rdev)
{
-#if 0
int requested_index = rdev->pm.requested_power_state_index;
struct radeon_power_state *ps = &rdev->pm.power_state[requested_index];
struct radeon_voltage *voltage = &ps->clock_info[0].voltage;
u32 tmp, dyn_pwrmgt_sclk_length, dyn_sclk_vol_cntl;
- u32 hdp_dyn_cntl, mc_host_dyn_cntl;
+ u32 hdp_dyn_cntl, /*mc_host_dyn_cntl,*/ dyn_backbias_cntl;
if ((voltage->type == VOLTAGE_GPIO) && (voltage->gpio.valid)) {
if (ps->misc & ATOM_PM_MISCINFO_VOLTAGE_DROP_SUPPORT) {
@@ -112,13 +111,21 @@
else
hdp_dyn_cntl |= HDP_FORCEON;
WREG32_PLL(HDP_DYN_CNTL, hdp_dyn_cntl);
-
+#if 0
+ /* mc_host_dyn seems to cause hangs from time to time */
mc_host_dyn_cntl = RREG32_PLL(MC_HOST_DYN_CNTL);
if (ps->misc & ATOM_PM_MISCINFO_DYNAMIC_MC_HOST_BLOCK_EN)
mc_host_dyn_cntl &= ~MC_HOST_FORCEON;
else
mc_host_dyn_cntl |= MC_HOST_FORCEON;
WREG32_PLL(MC_HOST_DYN_CNTL, mc_host_dyn_cntl);
+#endif
+ dyn_backbias_cntl = RREG32_PLL(DYN_BACKBIAS_CNTL);
+ if (ps->misc & ATOM_PM_MISCINFO2_DYNAMIC_BACK_BIAS_EN)
+ dyn_backbias_cntl |= IO_CG_BACKBIAS_EN;
+ else
+ dyn_backbias_cntl &= ~IO_CG_BACKBIAS_EN;
+ WREG32_PLL(DYN_BACKBIAS_CNTL, dyn_backbias_cntl);
/* set pcie lanes */
if ((rdev->flags & RADEON_IS_PCIE) &&
@@ -130,7 +137,6 @@
ps->pcie_lanes);
DRM_INFO("Setting: p: %d\n", ps->pcie_lanes);
}
-#endif
}
void rs600_pm_prepare(struct radeon_device *rdev)