Commit 9bbcb892 authored by Konrad Dybcio's avatar Konrad Dybcio Committed by Bjorn Andersson
Browse files

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: default avatarKonrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230619-topic-sc8280xp-clk-rpm-v1-1-1e5e1064cdb2@linaro.org


Signed-off-by: default avatarBjorn Andersson <andersson@kernel.org>
parent 4e13c7a5

drivers/clk/qcom/gpucc-sc8280xp.c

+17 −2
Original line number Diff line number Diff line
@@ -7,6 +7,7 @@ 
#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/platform_device.h>

#include <linux/pm_runtime.h>

#include <linux/regmap.h>



#include <dt-bindings/clock/qcom,gpucc-sc8280xp.h>
@@ -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[] = {