[PATCH] drm/amd/powerplay: Add the interface for geting dpm current power state

[Liang, Prike]

implement the sysfs power_dpm_state

Signed-off-by: Prike Liang <prike.li...@amd.com>
---
 drivers/gpu/drm/amd/powerplay/renoir_ppt.c | 34 ++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/drivers/gpu/drm/amd/powerplay/renoir_ppt.c 
b/drivers/gpu/drm/amd/powerplay/renoir_ppt.c
index a5cf846..2c22ba4 100644
--- a/drivers/gpu/drm/amd/powerplay/renoir_ppt.c
+++ b/drivers/gpu/drm/amd/powerplay/renoir_ppt.c
@@ -246,6 +246,38 @@ static int renoir_print_clk_levels(struct smu_context *smu,
        return size;
 }
 
+static enum amd_pm_state_type renoir_get_current_power_state(struct 
smu_context *smu)
+{
+       enum amd_pm_state_type pm_type;
+       struct smu_dpm_context *smu_dpm_ctx = &(smu->smu_dpm);
+
+       if (!smu_dpm_ctx->dpm_context ||
+           !smu_dpm_ctx->dpm_current_power_state)
+               return -EINVAL;
+
+       mutex_lock(&(smu->mutex));
+       switch (smu_dpm_ctx->dpm_current_power_state->classification.ui_label) {
+       case SMU_STATE_UI_LABEL_BATTERY:
+               pm_type = POWER_STATE_TYPE_BATTERY;
+               break;
+       case SMU_STATE_UI_LABEL_BALLANCED:
+               pm_type = POWER_STATE_TYPE_BALANCED;
+               break;
+       case SMU_STATE_UI_LABEL_PERFORMANCE:
+               pm_type = POWER_STATE_TYPE_PERFORMANCE;
+               break;
+       default:
+               if (smu_dpm_ctx->dpm_current_power_state->classification.flags 
& SMU_STATE_CLASSIFICATION_FLAG_BOOT)
+                       pm_type = POWER_STATE_TYPE_INTERNAL_BOOT;
+               else
+                       pm_type = POWER_STATE_TYPE_DEFAULT;
+               break;
+       }
+       mutex_unlock(&(smu->mutex));
+
+       return pm_type;
+}
+
 static const struct pptable_funcs renoir_ppt_funcs = {
        .get_smu_msg_index = renoir_get_smu_msg_index,
        .get_smu_table_index = renoir_get_smu_table_index,
@@ -253,6 +285,8 @@ static const struct pptable_funcs renoir_ppt_funcs = {
        .set_power_state = NULL,
        .get_dpm_uclk_limited = renoir_get_dpm_uclk_limited,
        .print_clk_levels = renoir_print_clk_levels,
+       .get_current_power_state = renoir_get_current_power_state,
+
 };
 
 void renoir_set_ppt_funcs(struct smu_context *smu)
-- 
2.7.4

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