From 9bbcb892a7cd06c8156e6de211a8d7d45ee48086 Mon Sep 17 00:00:00 2001 From: Konrad Dybcio Date: Mon, 19 Jun 2023 18:13:17 +0200 Subject: clk: qcom: gpucc-sc8280xp: Add runtime PM The GPU_CC block on SC8280XP is powered by the GFX 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 Link: https://lore.kernel.org/r/20230619-topic-sc8280xp-clk-rpm-v1-1-1e5e1064cdb2@linaro.org Signed-off-by: Bjorn Andersson --- drivers/clk/qcom/gpucc-sc8280xp.c | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-) (limited to 'drivers/clk') diff --git a/drivers/clk/qcom/gpucc-sc8280xp.c b/drivers/clk/qcom/gpucc-sc8280xp.c index ea1e9505c335..8e147ee294ee 100644 --- a/drivers/clk/qcom/gpucc-sc8280xp.c +++ b/drivers/clk/qcom/gpucc-sc8280xp.c @@ -7,6 +7,7 @@ #include #include #include +#include #include #include @@ -424,10 +425,21 @@ static struct qcom_cc_desc gpu_cc_sc8280xp_desc = { static int gpu_cc_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, &gpu_cc_sc8280xp_desc); - if (IS_ERR(regmap)) + if (IS_ERR(regmap)) { + pm_runtime_put(&pdev->dev); return PTR_ERR(regmap); + } clk_lucid_pll_configure(&gpu_cc_pll0, regmap, &gpu_cc_pll0_config); clk_lucid_pll_configure(&gpu_cc_pll1, regmap, &gpu_cc_pll1_config); @@ -439,7 +451,10 @@ static int gpu_cc_sc8280xp_probe(struct platform_device *pdev) regmap_update_bits(regmap, 0x1170, BIT(0), BIT(0)); regmap_update_bits(regmap, 0x109c, BIT(0), BIT(0)); - return qcom_cc_really_probe(pdev, &gpu_cc_sc8280xp_desc, regmap); + ret = qcom_cc_really_probe(pdev, &gpu_cc_sc8280xp_desc, regmap); + pm_runtime_put(&pdev->dev); + + return ret; } static const struct of_device_id gpu_cc_sc8280xp_match_table[] = { -- cgit v1.2.3