drm/radeon/dpm: implement force performance levels for rv6xx (f4f85a8c) · Commits · 戴 / test

drivers/gpu/drm/radeon/radeon_asic.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -1161,6 +1161,7 @@ static struct radeon_asic rv6xx_asic = {
		.get_mclk = &rv6xx_dpm_get_mclk,
		.print_power_state = &rv6xx_dpm_print_power_state,
		.debugfs_print_current_performance_level = &rv6xx_dpm_debugfs_print_current_performance_level,
		.force_performance_level = &rv6xx_dpm_force_performance_level,
		},
		.pflip = {
		.pre_page_flip = &rs600_pre_page_flip,

+2 −0

Original line number	Diff line number	Diff line
		@@ -421,6 +421,8 @@ void rv6xx_dpm_print_power_state(struct radeon_device *rdev,
		struct radeon_ps *ps);
		void rv6xx_dpm_debugfs_print_current_performance_level(struct radeon_device *rdev,
		struct seq_file *m);
		int rv6xx_dpm_force_performance_level(struct radeon_device *rdev,
		enum radeon_dpm_forced_level level);
		/* rs780 dpm */
		int rs780_dpm_init(struct radeon_device *rdev);
		int rs780_dpm_enable(struct radeon_device *rdev);

+35 −0

Original line number	Diff line number	Diff line
		@@ -1670,6 +1670,8 @@ int rv6xx_dpm_set_power_state(struct radeon_device *rdev)
		struct radeon_ps *old_ps = rdev->pm.dpm.current_ps;
		int ret;

		pi->restricted_levels = 0;

		rv6xx_set_uvd_clock_before_set_eng_clock(rdev, new_ps, old_ps);

		rv6xx_clear_vc(rdev);
		@@ -1756,6 +1758,8 @@ int rv6xx_dpm_set_power_state(struct radeon_device *rdev)

		rv6xx_set_uvd_clock_after_set_eng_clock(rdev, new_ps, old_ps);

		rdev->pm.dpm.forced_level = RADEON_DPM_FORCED_LEVEL_AUTO;

		return 0;
		}

		@@ -2085,3 +2089,34 @@ u32 rv6xx_dpm_get_mclk(struct radeon_device *rdev, bool low)
		else
		return requested_state->high.mclk;
		}

		int rv6xx_dpm_force_performance_level(struct radeon_device *rdev,
		enum radeon_dpm_forced_level level)
		{
		struct rv6xx_power_info *pi = rv6xx_get_pi(rdev);

		if (level == RADEON_DPM_FORCED_LEVEL_HIGH) {
		pi->restricted_levels = 3;
		} else if (level == RADEON_DPM_FORCED_LEVEL_LOW) {
		pi->restricted_levels = 2;
		} else {
		pi->restricted_levels = 0;
		}

		rv6xx_clear_vc(rdev);
		r600_power_level_enable(rdev, R600_POWER_LEVEL_LOW, true);
		r600_set_at(rdev, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF);
		r600_wait_for_power_level(rdev, R600_POWER_LEVEL_LOW);
		r600_power_level_enable(rdev, R600_POWER_LEVEL_HIGH, false);
		r600_power_level_enable(rdev, R600_POWER_LEVEL_MEDIUM, false);
		rv6xx_enable_medium(rdev);
		rv6xx_enable_high(rdev);
		if (pi->restricted_levels == 3)
		r600_power_level_enable(rdev, R600_POWER_LEVEL_LOW, false);
		rv6xx_program_vc(rdev);
		rv6xx_program_at(rdev);

		rdev->pm.dpm.forced_level = level;

		return 0;
		}