From: Kevin Wang <[email protected]>

add callback function get_fan_speed_percent for navi10 asic

Signed-off-by: Kevin Wang <[email protected]>
Reviewed-by: Huang Rui <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
---
 drivers/gpu/drm/amd/powerplay/navi10_ppt.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/drivers/gpu/drm/amd/powerplay/navi10_ppt.c 
b/drivers/gpu/drm/amd/powerplay/navi10_ppt.c
index fd796322fe35..1219a68e56f2 100644
--- a/drivers/gpu/drm/amd/powerplay/navi10_ppt.c
+++ b/drivers/gpu/drm/amd/powerplay/navi10_ppt.c
@@ -819,6 +819,24 @@ static int navi10_set_thermal_fan_table(struct smu_context 
*smu)
        return ret;
 }
 
+static int navi10_get_fan_speed_percent(struct smu_context *smu,
+                                       uint32_t *speed)
+{
+       int ret = 0;
+       uint32_t percent = 0;
+       uint32_t current_rpm;
+       PPTable_t *pptable = smu->smu_table.driver_pptable;
+
+       ret = smu_get_current_rpm(smu, &current_rpm);
+       if (ret)
+               return ret;
+
+       percent = current_rpm * 100 / pptable->FanMaximumRpm;
+       *speed = percent > 100 ? 100 : percent;
+
+       return ret;
+}
+
 static const struct pptable_funcs navi10_ppt_funcs = {
        .tables_init = navi10_tables_init,
        .alloc_dpm_context = navi10_allocate_dpm_context,
@@ -846,6 +864,7 @@ static const struct pptable_funcs navi10_ppt_funcs = {
        .get_current_activity_percent = navi10_get_current_activity_percent,
        .is_dpm_running = navi10_is_dpm_running,
        .set_thermal_fan_table = navi10_set_thermal_fan_table,
+       .get_fan_speed_percent = navi10_get_fan_speed_percent,
 };
 
 void navi10_set_ppt_funcs(struct smu_context *smu)
-- 
2.20.1

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