drm/amd/powerplay: support enabled ppfeatures retrieving and setting V3

User can use "ppfeatures" sysfs interface to retrieve and set enabled
powerplay features.

V2: expose this feature for Vega10 and later dGPUs
V3: squash in removal of unused variable (Alex)

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 42 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/powerplay/amd_powerplay.c b/drivers/gpu/drm/amd/powerplay/amd_powerplay.c
index 5d8b5d3c2453..3f73f7cd18b9 100644
--- a/drivers/gpu/drm/amd/powerplay/amd_powerplay.c
+++ b/drivers/gpu/drm/amd/powerplay/amd_powerplay.c
@@ -1455,6 +1455,46 @@ static int pp_set_asic_baco_state(void *handle, int state)
 	return 0;
 }
 
+static int pp_get_ppfeature_status(void *handle, char *buf)
+{
+	struct pp_hwmgr *hwmgr = handle;
+	int ret = 0;
+
+	if (!hwmgr || !hwmgr->pm_en || !buf)
+		return -EINVAL;
+
+	if (hwmgr->hwmgr_func->get_ppfeature_status == NULL) {
+		pr_info_ratelimited("%s was not implemented.\n", __func__);
+		return -EINVAL;
+	}
+
+	mutex_lock(&hwmgr->smu_lock);
+	ret = hwmgr->hwmgr_func->get_ppfeature_status(hwmgr, buf);
+	mutex_unlock(&hwmgr->smu_lock);
+
+	return ret;
+}
+
+static int pp_set_ppfeature_status(void *handle, uint64_t ppfeature_masks)
+{
+	struct pp_hwmgr *hwmgr = handle;
+	int ret = 0;
+
+	if (!hwmgr || !hwmgr->pm_en)
+		return -EINVAL;
+
+	if (hwmgr->hwmgr_func->set_ppfeature_status == NULL) {
+		pr_info_ratelimited("%s was not implemented.\n", __func__);
+		return -EINVAL;
+	}
+
+	mutex_lock(&hwmgr->smu_lock);
+	ret = hwmgr->hwmgr_func->set_ppfeature_status(hwmgr, ppfeature_masks);
+	mutex_unlock(&hwmgr->smu_lock);
+
+	return ret;
+}
+
 static const struct amd_pm_funcs pp_dpm_funcs = {
 	.load_firmware = pp_dpm_load_fw,
 	.wait_for_fw_loading_complete = pp_dpm_fw_loading_complete,
@@ -1508,4 +1548,6 @@ static const struct amd_pm_funcs pp_dpm_funcs = {
 	.get_asic_baco_capability = pp_get_asic_baco_capability,
 	.get_asic_baco_state = pp_get_asic_baco_state,
 	.set_asic_baco_state = pp_set_asic_baco_state,
+	.get_ppfeature_status = pp_get_ppfeature_status,
+	.set_ppfeature_status = pp_set_ppfeature_status,
 };