diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/btc_dpm.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/btc_dpm.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/btc_dpm.c b/drivers/gpu/drm/radeon/btc_dpm.c index 91567448c55d..0bfd55e08820 100644 --- a/drivers/gpu/drm/radeon/btc_dpm.c +++ b/drivers/gpu/drm/radeon/btc_dpm.c @@ -2059,6 +2059,19 @@ static void btc_init_stutter_mode(struct radeon_device *rdev) } } +bool btc_dpm_vblank_too_short(struct radeon_device *rdev) +{ + struct rv7xx_power_info *pi = rv770_get_pi(rdev); + u32 vblank_time = r600_dpm_get_vblank_time(rdev); + u32 switch_limit = pi->mem_gddr5 ? 450 : 100; + + if (vblank_time < switch_limit) + return true; + else + return false; + +} + static void btc_apply_state_adjust_rules(struct radeon_device *rdev, struct radeon_ps *rps) { @@ -2068,7 +2081,8 @@ static void btc_apply_state_adjust_rules(struct radeon_device *rdev, u32 mclk, sclk; u16 vddc, vddci; - if (rdev->pm.dpm.new_active_crtc_count > 1) + if ((rdev->pm.dpm.new_active_crtc_count > 1) || + btc_dpm_vblank_too_short(rdev)) disable_mclk_switching = true; else disable_mclk_switching = false; |