[PATCH 2/8] drm/amdgpu/smu11: add a helper to set the power source

[Alex Deucher]

Add a common smu11 helper to set the AC/DC power source.

Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/powerplay/inc/smu_v11_0.h |  3 +++
 drivers/gpu/drm/amd/powerplay/smu_v11_0.c     | 15 +++++++++++++++
 2 files changed, 18 insertions(+)

diff --git a/drivers/gpu/drm/amd/powerplay/inc/smu_v11_0.h b/drivers/gpu/drm/amd/powerplay/inc/smu_v11_0.h
index 1c88219fe403..674e426ed59b 100644
--- a/drivers/gpu/drm/amd/powerplay/inc/smu_v11_0.h
+++ b/drivers/gpu/drm/amd/powerplay/inc/smu_v11_0.h
@@ -267,4 +267,7 @@ uint32_t smu_v11_0_get_max_power_limit(struct smu_context *smu);
 int smu_v11_0_set_performance_level(struct smu_context *smu,
 				    enum amd_dpm_forced_level level);
 
+int smu_v11_0_set_power_source(struct smu_context *smu,
+			       enum smu_power_src_type power_src);
+
 #endif
diff --git a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
index 4fd77c7cfc80..20174bed11ce 100644
--- a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
+++ b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
@@ -1939,3 +1939,18 @@ int smu_v11_0_set_performance_level(struct smu_context *smu,
 	return ret;
 }
 
+int smu_v11_0_set_power_source(struct smu_context *smu,
+			       enum smu_power_src_type power_src)
+{
+	int pwr_source;
+
+	pwr_source = smu_power_get_index(smu, (uint32_t)power_src);
+	if (pwr_source < 0)
+		return -EINVAL;
+
+	return smu_send_smc_msg_with_param(smu,
+					SMU_MSG_NotifyPowerSource,
+					pwr_source,
+					NULL);
+}
+
-- 
2.25.1