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Commit 1316b792 authored by Alex Deucher's avatar Alex Deucher
Browse files

drm/radeon/dpm: add infrastructure to support debugfs info 



This lays the frameworks to report realtime power level
feedback.

Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 7ad8d068

drivers/gpu/drm/radeon/radeon.h

+2 −0
Original line number Diff line number Diff line
@@ -1667,6 +1667,7 @@ struct radeon_asic { 
		u32 (*get_sclk)(struct radeon_device *rdev, bool low);

		u32 (*get_mclk)(struct radeon_device *rdev, bool low);

		void (*print_power_state)(struct radeon_device *rdev, struct radeon_ps *ps);

		void (*debugfs_print_current_performance_level)(struct radeon_device *rdev, struct seq_file *m);

	} dpm;

	/* pageflipping */

	struct {
@@ -2433,6 +2434,7 @@ void radeon_ring_write(struct radeon_ring *ring, uint32_t v); 
#define radeon_dpm_get_sclk(rdev, l) rdev->asic->dpm.get_sclk((rdev), (l))

#define radeon_dpm_get_mclk(rdev, l) rdev->asic->dpm.get_mclk((rdev), (l))

#define radeon_dpm_print_power_state(rdev, ps) rdev->asic->dpm.print_power_state((rdev), (ps))

#define radeon_dpm_debugfs_print_current_performance_level(rdev, m) rdev->asic->dpm.debugfs_print_current_performance_level((rdev), (m))



/* Common functions */

/* AGP */

drivers/gpu/drm/radeon/radeon_pm.c

+27 −13
Original line number Diff line number Diff line
@@ -1062,6 +1062,11 @@ static int radeon_pm_init_dpm(struct radeon_device *rdev) 
		ret = device_create_file(rdev->dev, &dev_attr_power_method);

		if (ret)

			DRM_ERROR("failed to create device file for power method\n");



		if (radeon_debugfs_pm_init(rdev)) {

			DRM_ERROR("Failed to register debugfs file for dpm!\n");

		}



		DRM_INFO("radeon: dpm initialized\n");

	}
@@ -1389,6 +1394,14 @@ static int radeon_debugfs_pm_info(struct seq_file *m, void *data) 
	struct drm_device *dev = node->minor->dev;

	struct radeon_device *rdev = dev->dev_private;



	if (rdev->pm.dpm_enabled) {

		mutex_lock(&rdev->pm.mutex);

		if (rdev->asic->dpm.debugfs_print_current_performance_level)

			radeon_dpm_debugfs_print_current_performance_level(rdev, m);

		else

			seq_printf(m, "Unsupported\n");

		mutex_unlock(&rdev->pm.mutex);

	} else {

		seq_printf(m, "default engine clock: %u0 kHz\n", rdev->pm.default_sclk);

		/* radeon_get_engine_clock is not reliable on APUs so just print the current clock */

		if ((rdev->family >= CHIP_PALM) && (rdev->flags & RADEON_IS_IGP))
@@ -1402,6 +1415,7 @@ static int radeon_debugfs_pm_info(struct seq_file *m, void *data) 
			seq_printf(m, "voltage: %u mV\n", rdev->pm.current_vddc);

		if (rdev->asic->pm.get_pcie_lanes)

			seq_printf(m, "PCIE lanes: %d\n", radeon_get_pcie_lanes(rdev));

	}



	return 0;

}