diff mbox series

[v4,06/12] clk: qcom: gpucc-sm6115: Add runtime PM

Message ID 20230717-topic-branch_aon_cleanup-v4-6-32c293ded915@linaro.org
State New
Headers
Series Unregister critical branch clocks + some RPM |

Commit Message

Konrad Dybcio Dec. 30, 2023, 1:04 p.m. UTC 
  The GPU_CC block on SM6115 is powered by the VDD_CX rail. We only need
to cast an enable vote for it if the GPU blocks are in use.

Enable runtime PM to keep the power flowing only when necessary.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
---
 drivers/clk/qcom/gpucc-sm6115.c | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/clk/qcom/gpucc-sm6115.c b/drivers/clk/qcom/gpucc-sm6115.c
index 93a50431aef8..b50979ce1cbe 100644
--- a/drivers/clk/qcom/gpucc-sm6115.c
+++ b/drivers/clk/qcom/gpucc-sm6115.c
@@ -8,6 +8,7 @@ 
 #include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
 #include <linux/regmap.h>
 
 #include <dt-bindings/clock/qcom,sm6115-gpucc.h>
@@ -443,10 +444,21 @@  MODULE_DEVICE_TABLE(of, gpu_cc_sm6115_match_table);
 static int gpu_cc_sm6115_probe(struct platform_device *pdev)
 {
 	struct regmap *regmap;
+	int ret;
+
+	ret = devm_pm_runtime_enable(&pdev->dev);
+	if (ret)
+		return ret;
+
+	ret = pm_runtime_resume_and_get(&pdev->dev);
+	if (ret)
+		return ret;
 
 	regmap = qcom_cc_map(pdev, &gpu_cc_sm6115_desc);
-	if (IS_ERR(regmap))
+	if (IS_ERR(regmap)) {
+		pm_runtime_put(&pdev->dev);
 		return PTR_ERR(regmap);
+	}
 
 	clk_alpha_pll_configure(&gpu_cc_pll0, regmap, &gpu_cc_pll0_config);
 	clk_alpha_pll_configure(&gpu_cc_pll1, regmap, &gpu_cc_pll1_config);
@@ -461,7 +473,10 @@  static int gpu_cc_sm6115_probe(struct platform_device *pdev)
 	qcom_branch_set_clk_en(regmap, 0x1078); /* GPU_CC_AHB_CLK */
 	qcom_branch_set_clk_en(regmap, 0x1060); /* GPU_CC_GX_CXO_CLK */
 
-	return qcom_cc_really_probe(pdev, &gpu_cc_sm6115_desc, regmap);
+	ret = qcom_cc_really_probe(pdev, &gpu_cc_sm6115_desc, regmap);
+	pm_runtime_put(&pdev->dev);
+
+	return ret;
 }
 
 static struct platform_driver gpu_cc_sm6115_driver = {