@@ -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 = {
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(-)