diff mbox series

[2/2] clk: qcom: gcc-sc8280xp: Add runtime PM

Message ID 20230619-topic-sc8280xp-clk-rpm-v1-2-1e5e1064cdb2@linaro.org
State New
Headers
Series SC8280XP clock runtime pm |

Commit Message

Konrad Dybcio June 19, 2023, 4:13 p.m. UTC 
  The GCC block on SC8280XP is powered by the CX rail. We need to ensure
that it's enabled to prevent unwanted power collapse.

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

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
---
 drivers/clk/qcom/gcc-sc8280xp.c | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/clk/qcom/gcc-sc8280xp.c b/drivers/clk/qcom/gcc-sc8280xp.c
index 04a99dbaa57e..b90c71637814 100644
--- a/drivers/clk/qcom/gcc-sc8280xp.c
+++ b/drivers/clk/qcom/gcc-sc8280xp.c
@@ -9,6 +9,7 @@ 
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/of_device.h>
+#include <linux/pm_runtime.h>
 #include <linux/of.h>
 #include <linux/regmap.h>
 
@@ -7421,9 +7422,19 @@  static int gcc_sc8280xp_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, &gcc_sc8280xp_desc);
-	if (IS_ERR(regmap))
+	if (IS_ERR(regmap)) {
+		pm_runtime_put(&pdev->dev);
 		return PTR_ERR(regmap);
+	}
 
 	/*
 	 * Keep the clocks always-ON
@@ -7445,7 +7456,10 @@  static int gcc_sc8280xp_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	return qcom_cc_really_probe(pdev, &gcc_sc8280xp_desc, regmap);
+	ret = qcom_cc_really_probe(pdev, &gcc_sc8280xp_desc, regmap);
+	pm_runtime_put(&pdev->dev);
+
+	return ret;
 }
 
 static const struct of_device_id gcc_sc8280xp_match_table[] = {