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authorAlex Deucher <alexander.deucher@amd.com>2013-07-08 20:15:11 +0400
committerAlex Deucher <alexander.deucher@amd.com>2013-07-09 01:41:11 +0400
commitf4dec31861e938267d41a962f145edc7d81c8e92 (patch)
tree897575f0e233182232512d0eecf9d7d36d88b55a /drivers
parent76ad73e549ff39cbb235dae3a14902bb6ca12d53 (diff)
downloadlinux-f4dec31861e938267d41a962f145edc7d81c8e92.tar.xz
drm/radeon/dpm: implement vblank_too_short callback for si
Check if we can switch the mclk during the vblank time otherwise we may get artifacts on the screen when the mclk changes. Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpu/drm/radeon/ni_dpm.h2
-rw-r--r--drivers/gpu/drm/radeon/radeon_asic.c1
-rw-r--r--drivers/gpu/drm/radeon/si_dpm.c3
3 files changed, 5 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/ni_dpm.h b/drivers/gpu/drm/radeon/ni_dpm.h
index ac1c7abf2c67..6bbee9180909 100644
--- a/drivers/gpu/drm/radeon/ni_dpm.h
+++ b/drivers/gpu/drm/radeon/ni_dpm.h
@@ -245,4 +245,6 @@ void ni_set_uvd_clock_after_set_eng_clock(struct radeon_device *rdev,
struct radeon_ps *new_ps,
struct radeon_ps *old_ps);
+bool ni_dpm_vblank_too_short(struct radeon_device *rdev);
+
#endif
diff --git a/drivers/gpu/drm/radeon/radeon_asic.c b/drivers/gpu/drm/radeon/radeon_asic.c
index c62428be9bed..097077499cc6 100644
--- a/drivers/gpu/drm/radeon/radeon_asic.c
+++ b/drivers/gpu/drm/radeon/radeon_asic.c
@@ -2294,6 +2294,7 @@ static struct radeon_asic si_asic = {
.print_power_state = &ni_dpm_print_power_state,
.debugfs_print_current_performance_level = &si_dpm_debugfs_print_current_performance_level,
.force_performance_level = &si_dpm_force_performance_level,
+ .vblank_too_short = &ni_dpm_vblank_too_short,
},
.pflip = {
.pre_page_flip = &evergreen_pre_page_flip,
diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c
index 700a167be369..73aaa2e4c312 100644
--- a/drivers/gpu/drm/radeon/si_dpm.c
+++ b/drivers/gpu/drm/radeon/si_dpm.c
@@ -2906,7 +2906,8 @@ static void si_apply_state_adjust_rules(struct radeon_device *rdev,
u16 vddc, vddci;
int i;
- if (rdev->pm.dpm.new_active_crtc_count > 1)
+ if ((rdev->pm.dpm.new_active_crtc_count > 1) ||
+ ni_dpm_vblank_too_short(rdev))
disable_mclk_switching = true;
else
disable_mclk_switching = false;