[PATCH] drm/amd/powerplay: correct the hwmon interface ppt limit output

[PATCH] drm/amd/powerplay: correct the hwmon interface ppt limit output

[Evan Quan]

The ppt limit read out by hwmon interface is always 0.
Correct this hwmon interface output.

Change-Id: I2c537cacda04034201120b9c1ea82d113d99ced8
Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Rex Zhu <Rex.Zhu@amd.com>
---
 drivers/gpu/drm/amd/powerplay/hwmgr/vega20_hwmgr.c  | 8 ++++++++
 drivers/gpu/drm/amd/powerplay/inc/smu11_driver_if.h | 6 ++++++
 2 files changed, 14 insertions(+)

diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/vega20_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/vega20_hwmgr.c
index d45cbfe8e184..ac64ca423b73 100644
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/vega20_hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/vega20_hwmgr.c
@@ -1544,6 +1544,14 @@ static int vega20_enable_dpm_tasks(struct pp_hwmgr *hwmgr)
 			"[EnableDPMTasks] Failed to populate umdpstate clocks!",
 			return result);
 
+	result = smum_send_msg_to_smc_with_parameter(hwmgr, PPSMC_MSG_GetPptLimit,
+			POWER_SOURCE_AC << 16);
+	PP_ASSERT_WITH_CODE(!result,
+			"[GetPptLimit] get default PPT limit failed!",
+			return result);
+	vega20_read_arg_from_smc(hwmgr, &hwmgr->default_power_limit);
+	hwmgr->power_limit = hwmgr->default_power_limit;
+
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/amd/powerplay/inc/smu11_driver_if.h b/drivers/gpu/drm/amd/powerplay/inc/smu11_driver_if.h
index 71191deb4e76..a002021414ff 100644
--- a/drivers/gpu/drm/amd/powerplay/inc/smu11_driver_if.h
+++ b/drivers/gpu/drm/amd/powerplay/inc/smu11_driver_if.h
@@ -268,6 +268,12 @@ typedef enum {
   PPCLK_COUNT,
 } PPCLK_e;
 
+typedef enum {
+  POWER_SOURCE_AC,
+  POWER_SOURCE_DC,
+  POWER_SOURCE_COUNT,
+} POWER_SOURCE_e;
+
 typedef enum {
   VOLTAGE_MODE_AVFS = 0,
   VOLTAGE_MODE_AVFS_SS,
-- 
2.19.0

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