diff options
| -rw-r--r-- | drivers/gpu/drm/radeon/rs600.c | 14 | ||||
| -rw-r--r-- | drivers/gpu/drm/radeon/rs600d.h | 2 |
2 files changed, 12 insertions, 4 deletions
diff --git a/drivers/gpu/drm/radeon/rs600.c b/drivers/gpu/drm/radeon/rs600.c index c3890b76a1c..8e0c46060b3 100644 --- a/drivers/gpu/drm/radeon/rs600.c +++ b/drivers/gpu/drm/radeon/rs600.c @@ -48,12 +48,11 @@ int rs600_mc_wait_for_idle(struct radeon_device *rdev); 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 @@ void rs600_pm_misc(struct radeon_device *rdev) 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 @@ void rs600_pm_misc(struct radeon_device *rdev) ps->pcie_lanes); DRM_INFO("Setting: p: %d\n", ps->pcie_lanes); } -#endif } void rs600_pm_prepare(struct radeon_device *rdev) diff --git a/drivers/gpu/drm/radeon/rs600d.h b/drivers/gpu/drm/radeon/rs600d.h index 8f624342927..a27c13ac47c 100644 --- a/drivers/gpu/drm/radeon/rs600d.h +++ b/drivers/gpu/drm/radeon/rs600d.h @@ -655,6 +655,8 @@ #define HDP_FORCEON (1 << 0) #define MC_HOST_DYN_CNTL 0x1e #define MC_HOST_FORCEON (1 << 0) +#define DYN_BACKBIAS_CNTL 0x29 +#define IO_CG_BACKBIAS_EN (1 << 0) /* mmreg */ #define DOUT_POWER_MANAGEMENT_CNTL 0x7ee0 |