drm/amd/powerplay: add some sysfs interfaces for powerplay.

The new sysfs interfaces:
pp_num_states: Read-only, return the number of all pp states, 0 if powerplay is not available.
pp_cur_state: Read-only, return the index number of current pp state.
pp_force_state: Read-write, to write a power state index will switch to selected state forcedly and
		enable forced state mode, disable forced state mode. such as "echo >...".
pp_table: Read-write, binary output, to be used to read or write the dpm table, the maximum
		file size is 4KB of page size.
pp_dpm_sclk: Read-write, reading will return a dpm levels list, to write an index number will force
		powerplay to set the corresponding dpm level.
pp_dpm_mclk: same as sclk.
pp_dpm_pcie: same as sclk.

And add new setting "manual" to the existing interface power_dpm_force_performance_level.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Eric Huang <JinHuiEric.Huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h b/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h
index aeaa3dbba525..4094e8185004 100644
--- a/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h
+++ b/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h
@@ -327,6 +327,10 @@ struct pp_hwmgr_func {
 	int (*get_dal_power_level)(struct pp_hwmgr *hwmgr,
 				   struct amd_pp_dal_clock_info *info);
 	int (*power_off_asic)(struct pp_hwmgr *hwmgr);
+	int (*get_pp_table)(struct pp_hwmgr *hwmgr, char **table);
+	int (*set_pp_table)(struct pp_hwmgr *hwmgr, const char *buf, size_t size);
+	int (*force_clock_level)(struct pp_hwmgr *hwmgr, enum pp_clock_type type, int level);
+	int (*print_clock_levels)(struct pp_hwmgr *hwmgr, enum pp_clock_type type, char *buf);
 };
 
 struct pp_table_func {