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authorAlex Deucher <alexander.deucher@amd.com>2013-07-02 18:50:09 -0400
committerAlex Deucher <alexander.deucher@amd.com>2013-07-05 18:09:56 -0400
commit5d5e559193afd516daae9816e892bf2d97be0988 (patch)
tree84bc1a5fc293068c29700a2e574fa8dde353e836 /drivers/gpu
parenta160a6a3367611351624fca06838000b02aae2c7 (diff)
drm/radeon/dpm: implement force performance level for ON/LN
Allows you to force the selected performance level via sysfs. Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/radeon/radeon_asic.c1
-rw-r--r--drivers/gpu/drm/radeon/radeon_asic.h2
-rw-r--r--drivers/gpu/drm/radeon/sumo_dpm.c44
3 files changed, 47 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_asic.c b/drivers/gpu/drm/radeon/radeon_asic.c
index 6ec4831fdb5..5d592aed1ee 100644
--- a/drivers/gpu/drm/radeon/radeon_asic.c
+++ b/drivers/gpu/drm/radeon/radeon_asic.c
@@ -1641,6 +1641,7 @@ static struct radeon_asic sumo_asic = {
.get_mclk = &sumo_dpm_get_mclk,
.print_power_state = &sumo_dpm_print_power_state,
.debugfs_print_current_performance_level = &sumo_dpm_debugfs_print_current_performance_level,
+ .force_performance_level = &sumo_dpm_force_performance_level,
},
.pflip = {
.pre_page_flip = &evergreen_pre_page_flip,
diff --git a/drivers/gpu/drm/radeon/radeon_asic.h b/drivers/gpu/drm/radeon/radeon_asic.h
index 7efa51a13b3..1a89b3af04f 100644
--- a/drivers/gpu/drm/radeon/radeon_asic.h
+++ b/drivers/gpu/drm/radeon/radeon_asic.h
@@ -569,6 +569,8 @@ void sumo_dpm_print_power_state(struct radeon_device *rdev,
struct radeon_ps *ps);
void sumo_dpm_debugfs_print_current_performance_level(struct radeon_device *rdev,
struct seq_file *m);
+int sumo_dpm_force_performance_level(struct radeon_device *rdev,
+ enum radeon_dpm_forced_level level);
/*
* cayman
diff --git a/drivers/gpu/drm/radeon/sumo_dpm.c b/drivers/gpu/drm/radeon/sumo_dpm.c
index dc599060a9a..11b6b9924f1 100644
--- a/drivers/gpu/drm/radeon/sumo_dpm.c
+++ b/drivers/gpu/drm/radeon/sumo_dpm.c
@@ -1319,6 +1319,8 @@ int sumo_dpm_set_power_state(struct radeon_device *rdev)
if (pi->enable_dpm)
sumo_set_uvd_clock_after_set_eng_clock(rdev, new_ps, old_ps);
+ rdev->pm.dpm.forced_level = RADEON_DPM_FORCED_LEVEL_AUTO;
+
return 0;
}
@@ -1830,3 +1832,45 @@ u32 sumo_dpm_get_mclk(struct radeon_device *rdev, bool low)
return pi->sys_info.bootup_uma_clk;
}
+
+int sumo_dpm_force_performance_level(struct radeon_device *rdev,
+ enum radeon_dpm_forced_level level)
+{
+ struct sumo_power_info *pi = sumo_get_pi(rdev);
+ struct radeon_ps *rps = &pi->current_rps;
+ struct sumo_ps *ps = sumo_get_ps(rps);
+ int i;
+
+ if (ps->num_levels <= 1)
+ return 0;
+
+ if (level == RADEON_DPM_FORCED_LEVEL_HIGH) {
+ sumo_power_level_enable(rdev, ps->num_levels - 1, true);
+ sumo_set_forced_level(rdev, ps->num_levels - 1);
+ sumo_set_forced_mode_enabled(rdev);
+ for (i = 0; i < ps->num_levels - 1; i++) {
+ sumo_power_level_enable(rdev, i, false);
+ }
+ sumo_set_forced_mode(rdev, false);
+ sumo_set_forced_mode_enabled(rdev);
+ sumo_set_forced_mode(rdev, false);
+ } else if (level == RADEON_DPM_FORCED_LEVEL_LOW) {
+ sumo_power_level_enable(rdev, 0, true);
+ sumo_set_forced_level(rdev, 0);
+ sumo_set_forced_mode_enabled(rdev);
+ for (i = 1; i < ps->num_levels; i++) {
+ sumo_power_level_enable(rdev, i, false);
+ }
+ sumo_set_forced_mode(rdev, false);
+ sumo_set_forced_mode_enabled(rdev);
+ sumo_set_forced_mode(rdev, false);
+ } else {
+ for (i = 0; i < ps->num_levels; i++) {
+ sumo_power_level_enable(rdev, i, true);
+ }
+ }
+
+ rdev->pm.dpm.forced_level = level;
+
+ return 0;
+}