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authorAlex Deucher <alexander.deucher@amd.com>2013-07-08 11:49:48 -0400
committerAlex Deucher <alexander.deucher@amd.com>2013-07-08 17:40:31 -0400
commitb06195d9943d561273939e866b4bfc87beba18bc (patch)
tree144eff6298a18a1de951b62ecf180c2d0d8fdb48 /drivers
parent48783069350a2963e97696a3c3ed0a40cbe35210 (diff)
drm/radeon/dpm: implement vblank_too_short callback for 7xx
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/radeon_asic.c1
-rw-r--r--drivers/gpu/drm/radeon/radeon_asic.h1
-rw-r--r--drivers/gpu/drm/radeon/rv770_dpm.c11
3 files changed, 13 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_asic.c b/drivers/gpu/drm/radeon/radeon_asic.c
index a6906d4ca734..c3b2f9605f6d 100644
--- a/drivers/gpu/drm/radeon/radeon_asic.c
+++ b/drivers/gpu/drm/radeon/radeon_asic.c
@@ -1394,6 +1394,7 @@ static struct radeon_asic rv770_asic = {
.print_power_state = &rv770_dpm_print_power_state,
.debugfs_print_current_performance_level = &rv770_dpm_debugfs_print_current_performance_level,
.force_performance_level = &rv770_dpm_force_performance_level,
+ .vblank_too_short = &rv770_dpm_vblank_too_short,
},
.pflip = {
.pre_page_flip = &rs600_pre_page_flip,
diff --git a/drivers/gpu/drm/radeon/radeon_asic.h b/drivers/gpu/drm/radeon/radeon_asic.h
index 4456f85a932e..ca219e9fc2b4 100644
--- a/drivers/gpu/drm/radeon/radeon_asic.h
+++ b/drivers/gpu/drm/radeon/radeon_asic.h
@@ -480,6 +480,7 @@ void rv770_dpm_debugfs_print_current_performance_level(struct radeon_device *rde
struct seq_file *m);
int rv770_dpm_force_performance_level(struct radeon_device *rdev,
enum radeon_dpm_forced_level level);
+bool rv770_dpm_vblank_too_short(struct radeon_device *rdev);
/*
* evergreen
diff --git a/drivers/gpu/drm/radeon/rv770_dpm.c b/drivers/gpu/drm/radeon/rv770_dpm.c
index 4de50c811879..d914e04ea39a 100644
--- a/drivers/gpu/drm/radeon/rv770_dpm.c
+++ b/drivers/gpu/drm/radeon/rv770_dpm.c
@@ -2508,3 +2508,14 @@ u32 rv770_dpm_get_mclk(struct radeon_device *rdev, bool low)
else
return requested_state->high.mclk;
}
+
+bool rv770_dpm_vblank_too_short(struct radeon_device *rdev)
+{
+ u32 vblank_time = r600_dpm_get_vblank_time(rdev);
+
+ if (vblank_time < 300)
+ return true;
+ else
+ return false;
+
+}