drm/amdgpu: add set_gfx_cgpg implement (v2)

add set_gfx_cgpg implement

v2: check if using sw_smu (Alex)
Signed-off-by: Aaron Liu <aaron.liu@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c

@@ -4563,6 +4563,9 @@ static void gfx_v9_0_update_gfx_cg_power_gating(struct amdgpu_device *adev,
 {
 	amdgpu_gfx_rlc_enter_safe_mode(adev);
 
+	if (is_support_sw_smu(adev) && !enable)
+		smu_set_gfx_cgpg(&adev->smu, enable);
+
 	if ((adev->pg_flags & AMD_PG_SUPPORT_GFX_PG) && enable) {
 		gfx_v9_0_enable_gfx_cg_power_gating(adev, true);
 		if (adev->pg_flags & AMD_PG_SUPPORT_GFX_PIPELINE)
@@ -4838,6 +4841,8 @@ static int gfx_v9_0_set_powergating_state(void *handle,
 			gfx_v9_0_enable_cp_power_gating(adev, false);
 
 		/* update gfx cgpg state */
+		if (is_support_sw_smu(adev) && enable)
+			smu_set_gfx_cgpg(&adev->smu, enable);
 		gfx_v9_0_update_gfx_cg_power_gating(adev, enable);
 
 		/* update mgcg state */

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

@@ -475,6 +475,7 @@ struct smu_funcs
 	int (*check_fw_version)(struct smu_context *smu);
 	int (*powergate_sdma)(struct smu_context *smu, bool gate);
 	int (*powergate_vcn)(struct smu_context *smu, bool gate);
+	int (*set_gfx_cgpg)(struct smu_context *smu, bool enable);
 	int (*write_pptable)(struct smu_context *smu);
 	int (*set_min_dcef_deep_sleep)(struct smu_context *smu);
 	int (*set_tool_table_location)(struct smu_context *smu);
@@ -555,6 +556,8 @@ struct smu_funcs
 	((smu)->funcs->powergate_sdma ? (smu)->funcs->powergate_sdma((smu), (gate)) : 0)
 #define smu_powergate_vcn(smu, gate) \
 	((smu)->funcs->powergate_vcn ? (smu)->funcs->powergate_vcn((smu), (gate)) : 0)
+#define smu_set_gfx_cgpg(smu, enabled) \
+	((smu)->funcs->set_gfx_cgpg ? (smu)->funcs->set_gfx_cgpg((smu), (enabled)) : 0)
 #define smu_get_vbios_bootup_values(smu) \
 	((smu)->funcs->get_vbios_bootup_values ? (smu)->funcs->get_vbios_bootup_values((smu)) : 0)
 #define smu_get_clk_info_from_vbios(smu) \

drivers/gpu/drm/amd/powerplay/smu_v12_0.c

@@ -198,6 +198,15 @@ static int smu_v12_0_powergate_vcn(struct smu_context *smu, bool gate)
 		return smu_send_smc_msg(smu, SMU_MSG_PowerUpVcn);
 }
 
+static int smu_v12_0_set_gfx_cgpg(struct smu_context *smu, bool enable)
+{
+	if (!(smu->adev->pg_flags & AMD_PG_SUPPORT_GFX_PG))
+		return 0;
+
+	return smu_v12_0_send_msg_with_param(smu,
+		SMU_MSG_SetGfxCGPG, enable ? 1 : 0);
+}
+
 static const struct smu_funcs smu_v12_0_funcs = {
 	.check_fw_status = smu_v12_0_check_fw_status,
 	.check_fw_version = smu_v12_0_check_fw_version,
@@ -206,6 +215,7 @@ static const struct smu_funcs smu_v12_0_funcs = {
 	.send_smc_msg = smu_v12_0_send_msg,
 	.send_smc_msg_with_param = smu_v12_0_send_msg_with_param,
 	.read_smc_arg = smu_v12_0_read_arg,
+	.set_gfx_cgpg = smu_v12_0_set_gfx_cgpg,
 };
 
 void smu_v12_0_set_smu_funcs(struct smu_context *smu)