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Commit ae3e40e8 authored by Alex Deucher's avatar Alex Deucher
Browse files

drm/radeon/dpm: add debugfs support for KB/KV 



This allows you to look at the current DPM state via
debugfs.

Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 5496131e

drivers/gpu/drm/radeon/cikd.h

+4 −0
Original line number Diff line number Diff line
@@ -134,6 +134,10 @@ 
#       define DISP_GAP_MCHG(x)                           ((x) << 24)

#       define DISP_GAP_MCHG_MASK                         (3 << 24)



#define SMU_VOLTAGE_STATUS                                0xC0200094

#       define SMU_VOLTAGE_CURRENT_LEVEL_MASK             (0xff << 1)

#       define SMU_VOLTAGE_CURRENT_LEVEL_SHIFT            1



#define TARGET_AND_CURRENT_PROFILE_INDEX_1                0xC02000F0

#       define CURR_PCIE_INDEX_MASK                       (0xf << 24)

#       define CURR_PCIE_INDEX_SHIFT                      24

drivers/gpu/drm/radeon/kv_dpm.c

+23 −0
Original line number Diff line number Diff line
@@ -26,6 +26,7 @@ 
#include "cikd.h"

#include "r600_dpm.h"

#include "kv_dpm.h"

#include <linux/seq_file.h>



#define KV_MAX_DEEPSLEEP_DIVIDER_ID     5

#define KV_MINIMUM_ENGINE_CLOCK         800
@@ -2481,6 +2482,28 @@ int kv_dpm_init(struct radeon_device *rdev) 
	return 0;

}



void kv_dpm_debugfs_print_current_performance_level(struct radeon_device *rdev,

						    struct seq_file *m)

{

	struct kv_power_info *pi = kv_get_pi(rdev);

	u32 current_index =

		(RREG32_SMC(TARGET_AND_CURRENT_PROFILE_INDEX) & CURR_SCLK_INDEX_MASK) >>

		CURR_SCLK_INDEX_SHIFT;

	u32 sclk, tmp;

	u16 vddc;



	if (current_index >= SMU__NUM_SCLK_DPM_STATE) {

		seq_printf(m, "invalid dpm profile %d\n", current_index);

	} else {

		sclk = be32_to_cpu(pi->graphics_level[current_index].SclkFrequency);

		tmp = (RREG32_SMC(SMU_VOLTAGE_STATUS) & SMU_VOLTAGE_CURRENT_LEVEL_MASK) >>

			SMU_VOLTAGE_CURRENT_LEVEL_SHIFT;

		vddc = kv_convert_8bit_index_to_voltage(rdev, (u16)tmp);

		seq_printf(m, "power level %d    sclk: %u vddc: %u\n",

			   current_index, sclk, vddc);

	}

}



void kv_dpm_print_power_state(struct radeon_device *rdev,

			      struct radeon_ps *rps)

{

drivers/gpu/drm/radeon/radeon_asic.c

+1 −0
Original line number Diff line number Diff line
@@ -2640,6 +2640,7 @@ static struct radeon_asic kv_asic = { 
		.get_sclk = &kv_dpm_get_sclk,

		.get_mclk = &kv_dpm_get_mclk,

		.print_power_state = &kv_dpm_print_power_state,

		.debugfs_print_current_performance_level = &kv_dpm_debugfs_print_current_performance_level,

	},

	.pflip = {

		.pre_page_flip = &evergreen_pre_page_flip,

drivers/gpu/drm/radeon/radeon_asic.h

+2 −0
Original line number Diff line number Diff line
@@ -782,5 +782,7 @@ u32 kv_dpm_get_sclk(struct radeon_device *rdev, bool low); 
u32 kv_dpm_get_mclk(struct radeon_device *rdev, bool low);

void kv_dpm_print_power_state(struct radeon_device *rdev,

			      struct radeon_ps *ps);

void kv_dpm_debugfs_print_current_performance_level(struct radeon_device *rdev,

						    struct seq_file *m);



#endif