drm/amd/powerplay: implement smu_init[fini]_power function for smu11

This patch implements smu_init[fini]_power function for smu v11.
Signed-off-by: Kevin Wang <Kevin1.Wang@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -167,6 +167,12 @@ static int smu_sw_fini(void *handle)
 		return ret;
 	}
 
+	ret = smu_fini_power(smu);
+	if (ret) {
+		pr_err("Failed to init smu_fini_power!\n");
+		return ret;
+	}
+
 	return 0;
 }
 

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

@@ -54,6 +54,11 @@ struct smu_dpm_context {
 	uint32_t dpm_context_size;
 };
 
+struct smu_power_context {
+	void *power_context;
+	uint32_t power_context_size;
+};
+
 struct smu_context
 {
 	struct amdgpu_device            *adev;
@@ -63,6 +68,7 @@ struct smu_context
 
 	struct smu_table_context	smu_table;
 	struct smu_dpm_context		smu_dpm;
+	struct smu_power_context	smu_power;
 };
 
 struct smu_funcs
@@ -71,6 +77,7 @@ struct smu_funcs
 	int (*init_smc_tables)(struct smu_context *smu);
 	int (*fini_smc_tables)(struct smu_context *smu);
 	int (*init_power)(struct smu_context *smu);
+	int (*fini_power)(struct smu_context *smu);
 	int (*load_microcode)(struct smu_context *smu);
 	int (*check_fw_status)(struct smu_context *smu);
 	int (*read_pptable_from_vbios)(struct smu_context *smu);
@@ -99,6 +106,8 @@ struct smu_funcs
 	((smu)->funcs->fini_smc_tables ? (smu)->funcs->fini_smc_tables((smu)) : 0)
 #define smu_init_power(smu) \
 	((smu)->funcs->init_power ? (smu)->funcs->init_power((smu)) : 0)
+#define smu_fini_power(smu) \
+	((smu)->funcs->fini_power ? (smu)->funcs->fini_power((smu)) : 0)
 #define smu_load_microcode(smu) \
 	((smu)->funcs->load_microcode ? (smu)->funcs->load_microcode((smu)) : 0)
 #define smu_check_fw_status(smu) \

drivers/gpu/drm/amd/powerplay/inc/smu_v11_0.h

@@ -62,6 +62,20 @@ struct smu_11_0_dpm_context {
 	uint32_t                    dcef_min_ds_clk;
 };
 
+enum smu_11_0_power_state {
+	SMU_11_0_POWER_STATE__D0 = 0,
+	SMU_11_0_POWER_STATE__D1,
+	SMU_11_0_POWER_STATE__D3, /* Sleep*/
+	SMU_11_0_POWER_STATE__D4, /* Hibernate*/
+	SMU_11_0_POWER_STATE__D5, /* Power off*/
+};
+
+struct smu_11_0_power_context {
+	uint32_t	power_source;
+	uint8_t		in_power_limit_boost_mode;
+	enum smu_11_0_power_state power_state;
+};
+
 void smu_v11_0_set_smu_funcs(struct smu_context *smu);
 
 #endif

drivers/gpu/drm/amd/powerplay/smu_v11_0.c

@@ -313,6 +313,37 @@ static int smu_v11_0_fini_smc_tables(struct smu_context *smu)
 	return 0;
 
 }
+
+static int smu_v11_0_init_power(struct smu_context *smu)
+{
+	struct smu_power_context *smu_power = &smu->smu_power;
+
+	if (smu_power->power_context || smu_power->power_context_size != 0)
+		return -EINVAL;
+
+	smu_power->power_context = kzalloc(sizeof(struct smu_11_0_dpm_context),
+					   GFP_KERNEL);
+	if (!smu_power->power_context)
+		return -ENOMEM;
+	smu_power->power_context_size = sizeof(struct smu_11_0_dpm_context);
+
+	return 0;
+}
+
+static int smu_v11_0_fini_power(struct smu_context *smu)
+{
+	struct smu_power_context *smu_power = &smu->smu_power;
+
+	if (!smu_power->power_context || smu_power->power_context_size == 0)
+		return -EINVAL;
+
+	kfree(smu_power->power_context);
+	smu_power->power_context = NULL;
+	smu_power->power_context_size = 0;
+
+	return 0;
+}
+
 static const struct smu_funcs smu_v11_0_funcs = {
 	.init_microcode = smu_v11_0_init_microcode,
 	.load_microcode = smu_v11_0_load_microcode,
@@ -323,6 +354,8 @@ static const struct smu_funcs smu_v11_0_funcs = {
 	.read_pptable_from_vbios = smu_v11_0_read_pptable_from_vbios,
 	.init_smc_tables = smu_v11_0_init_smc_tables,
 	.fini_smc_tables = smu_v11_0_fini_smc_tables,
+	.init_power = smu_v11_0_init_power,
+	.fini_power = smu_v11_0_fini_power,
 };
 
 void smu_v11_0_set_smu_funcs(struct smu_context *smu)