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

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

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
hifive-unleashed-5.1
Alex Deucher 2013-07-18 16:39:53 -04:00
parent 5496131e45
commit ae3e40e871
4 changed files with 30 additions and 0 deletions
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4
drivers/gpu/drm/radeon/cikd.h
View File

@ -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

23
drivers/gpu/drm/radeon/kv_dpm.c
View File

@ -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)
{

1
drivers/gpu/drm/radeon/radeon_asic.c
View File

@ -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,

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

@ -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