From b06195d9943d561273939e866b4bfc87beba18bc Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Mon, 8 Jul 2013 11:49:48 -0400 Subject: [PATCH] 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 --- drivers/gpu/drm/radeon/radeon_asic.c | 1 + drivers/gpu/drm/radeon/radeon_asic.h | 1 + drivers/gpu/drm/radeon/rv770_dpm.c | 11 +++++++++++ 3 files changed, 13 insertions(+) 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; + +} -- GitLab