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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>
hifive-unleashed-5.1
Alex Deucher 2013-07-02 18:50:09 -04:00
parent a160a6a336
commit 5d5e559193
3 changed files with 47 additions and 0 deletions
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1
drivers/gpu/drm/radeon/radeon_asic.c
View File

@ -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,

2
drivers/gpu/drm/radeon/radeon_asic.h
View File

@ -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

44
drivers/gpu/drm/radeon/sumo_dpm.c
View File

@ -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;
}