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>

drivers/gpu/drm/amd/amdgpu/amdgpu.h

@@ -1503,6 +1503,7 @@ enum amdgpu_dpm_forced_level {
 	AMDGPU_DPM_FORCED_LEVEL_AUTO = 0,
 	AMDGPU_DPM_FORCED_LEVEL_LOW = 1,
 	AMDGPU_DPM_FORCED_LEVEL_HIGH = 2,
+	AMDGPU_DPM_FORCED_LEVEL_MANUAL = 3,
 };
 
 struct amdgpu_vce_state {
@@ -2014,6 +2015,7 @@ struct amdgpu_device {
 	/* powerplay */
 	struct amd_powerplay		powerplay;
 	bool				pp_enabled;
+	bool				pp_force_state_enabled;
 
 	/* dpm */
 	struct amdgpu_pm		pm;
@@ -2301,6 +2303,21 @@ amdgpu_get_sdma_instance(struct amdgpu_ring *ring)
 #define amdgpu_dpm_get_performance_level(adev) \
 	(adev)->powerplay.pp_funcs->get_performance_level((adev)->powerplay.pp_handle)
 
+#define amdgpu_dpm_get_pp_num_states(adev, data) \
+	(adev)->powerplay.pp_funcs->get_pp_num_states((adev)->powerplay.pp_handle, data)
+
+#define amdgpu_dpm_get_pp_table(adev, table) \
+	(adev)->powerplay.pp_funcs->get_pp_table((adev)->powerplay.pp_handle, table)
+
+#define amdgpu_dpm_set_pp_table(adev, buf, size) \
+	(adev)->powerplay.pp_funcs->set_pp_table((adev)->powerplay.pp_handle, buf, size)
+
+#define amdgpu_dpm_print_clock_levels(adev, type, buf) \
+	(adev)->powerplay.pp_funcs->print_clock_levels((adev)->powerplay.pp_handle, type, buf)
+
+#define amdgpu_dpm_force_clock_level(adev, type, level) \
+		(adev)->powerplay.pp_funcs->force_clock_level((adev)->powerplay.pp_handle, type, level)
+
 #define amdgpu_dpm_dispatch_task(adev, event_id, input, output)		\
 	(adev)->powerplay.pp_funcs->dispatch_tasks((adev)->powerplay.pp_handle, (event_id), (input), (output))
 

drivers/gpu/drm/amd/powerplay/amd_powerplay.c

@@ -433,7 +433,10 @@ enum amd_pm_state_type pp_dpm_get_current_power_state(void *handle)
 	case PP_StateUILabel_Performance:
 		return POWER_STATE_TYPE_PERFORMANCE;
 	default:
-		return POWER_STATE_TYPE_DEFAULT;
+		if (state->classification.flags & PP_StateClassificationFlag_Boot)
+			return  POWER_STATE_TYPE_INTERNAL_BOOT;
+		else
+			return POWER_STATE_TYPE_DEFAULT;
 	}
 }
 
@@ -535,6 +538,112 @@ static int pp_dpm_get_temperature(void *handle)
 	return hwmgr->hwmgr_func->get_temperature(hwmgr);
 }
 
+static int pp_dpm_get_pp_num_states(void *handle,
+		struct pp_states_info *data)
+{
+	struct pp_hwmgr *hwmgr;
+	int i;
+
+	if (!handle)
+		return -EINVAL;
+
+	hwmgr = ((struct pp_instance *)handle)->hwmgr;
+
+	if (hwmgr == NULL || hwmgr->ps == NULL)
+		return -EINVAL;
+
+	data->nums = hwmgr->num_ps;
+
+	for (i = 0; i < hwmgr->num_ps; i++) {
+		struct pp_power_state *state = (struct pp_power_state *)
+				((unsigned long)hwmgr->ps + i * hwmgr->ps_size);
+		switch (state->classification.ui_label) {
+		case PP_StateUILabel_Battery:
+			data->states[i] = POWER_STATE_TYPE_BATTERY;
+			break;
+		case PP_StateUILabel_Balanced:
+			data->states[i] = POWER_STATE_TYPE_BALANCED;
+			break;
+		case PP_StateUILabel_Performance:
+			data->states[i] = POWER_STATE_TYPE_PERFORMANCE;
+			break;
+		default:
+			if (state->classification.flags & PP_StateClassificationFlag_Boot)
+				data->states[i] = POWER_STATE_TYPE_INTERNAL_BOOT;
+			else
+				data->states[i] = POWER_STATE_TYPE_DEFAULT;
+		}
+	}
+
+	return 0;
+}
+
+static int pp_dpm_get_pp_table(void *handle, char **table)
+{
+	struct pp_hwmgr *hwmgr;
+
+	if (!handle)
+		return -EINVAL;
+
+	hwmgr = ((struct pp_instance *)handle)->hwmgr;
+
+	if (hwmgr == NULL || hwmgr->hwmgr_func == NULL ||
+		hwmgr->hwmgr_func->get_pp_table == NULL)
+		return -EINVAL;
+
+	return hwmgr->hwmgr_func->get_pp_table(hwmgr, table);
+}
+
+static int pp_dpm_set_pp_table(void *handle, const char *buf, size_t size)
+{
+	struct pp_hwmgr *hwmgr;
+
+	if (!handle)
+		return -EINVAL;
+
+	hwmgr = ((struct pp_instance *)handle)->hwmgr;
+
+	if (hwmgr == NULL || hwmgr->hwmgr_func == NULL ||
+		hwmgr->hwmgr_func->set_pp_table == NULL)
+			return -EINVAL;
+
+	return hwmgr->hwmgr_func->set_pp_table(hwmgr, buf, size);
+}
+
+static int pp_dpm_force_clock_level(void *handle,
+		enum pp_clock_type type, int level)
+{
+	struct pp_hwmgr *hwmgr;
+
+	if (!handle)
+		return -EINVAL;
+
+	hwmgr = ((struct pp_instance *)handle)->hwmgr;
+
+	if (hwmgr == NULL || hwmgr->hwmgr_func == NULL ||
+			hwmgr->hwmgr_func->force_clock_level == NULL)
+				return -EINVAL;
+
+	return hwmgr->hwmgr_func->force_clock_level(hwmgr, type, level);
+}
+
+static int pp_dpm_print_clock_levels(void *handle,
+		enum pp_clock_type type, char *buf)
+{
+	struct pp_hwmgr *hwmgr;
+
+	if (!handle)
+		return -EINVAL;
+
+	hwmgr = ((struct pp_instance *)handle)->hwmgr;
+
+	if (hwmgr == NULL || hwmgr->hwmgr_func == NULL ||
+			hwmgr->hwmgr_func->print_clock_levels == NULL)
+		return -EINVAL;
+
+	return hwmgr->hwmgr_func->print_clock_levels(hwmgr, type, buf);
+}
+
 const struct amd_powerplay_funcs pp_dpm_funcs = {
 	.get_temperature = pp_dpm_get_temperature,
 	.load_firmware = pp_dpm_load_fw,
@@ -552,6 +661,11 @@ const struct amd_powerplay_funcs pp_dpm_funcs = {
 	.get_fan_control_mode = pp_dpm_get_fan_control_mode,
 	.set_fan_speed_percent = pp_dpm_set_fan_speed_percent,
 	.get_fan_speed_percent = pp_dpm_get_fan_speed_percent,
+	.get_pp_num_states = pp_dpm_get_pp_num_states,
+	.get_pp_table = pp_dpm_get_pp_table,
+	.set_pp_table = pp_dpm_set_pp_table,
+	.force_clock_level = pp_dpm_force_clock_level,
+	.print_clock_levels = pp_dpm_print_clock_levels,
 };
 
 static int amd_pp_instance_init(struct amd_pp_init *pp_init,

drivers/gpu/drm/amd/powerplay/inc/amd_powerplay.h

@@ -123,6 +123,7 @@ enum amd_dpm_forced_level {
 	AMD_DPM_FORCED_LEVEL_AUTO = 0,
 	AMD_DPM_FORCED_LEVEL_LOW = 1,
 	AMD_DPM_FORCED_LEVEL_HIGH = 2,
+	AMD_DPM_FORCED_LEVEL_MANUAL = 3,
 };
 
 struct amd_pp_init {
@@ -225,6 +226,17 @@ enum {
 	PP_GROUP_MAX
 };
 
+enum pp_clock_type {
+	PP_SCLK,
+	PP_MCLK,
+	PP_PCIE,
+};
+
+struct pp_states_info {
+	uint32_t nums;
+	uint32_t states[16];
+};
+
 #define PP_GROUP_MASK        0xF0000000
 #define PP_GROUP_SHIFT       28
 
@@ -278,6 +290,11 @@ struct amd_powerplay_funcs {
 	int (*get_fan_control_mode)(void *handle);
 	int (*set_fan_speed_percent)(void *handle, uint32_t percent);
 	int (*get_fan_speed_percent)(void *handle, uint32_t *speed);
+	int (*get_pp_num_states)(void *handle, struct pp_states_info *data);
+	int (*get_pp_table)(void *handle, char **table);
+	int (*set_pp_table)(void *handle, const char *buf, size_t size);
+	int (*force_clock_level)(void *handle, enum pp_clock_type type, int level);
+	int (*print_clock_levels)(void *handle, enum pp_clock_type type, char *buf);
 };
 
 struct amd_powerplay {

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 {