[PATCH v2 0/5] PM: add two devres helpers and use them in qcom cc

[PATCH v2 0/5] PM: add two devres helpers and use them in qcom cc

[Dmitry Baryshkov]

Qualcomm clock controller code (and most probably other drivers) would
benefit from having devres helpers for pm_runtime_enable() and
pm_clk_create(). Add those two helpers.

Modify Qualcomm clock controller code to use new helpers and separate
common pm code into common.c.

----------------------------------------------------------------
Dmitry Baryshkov (5):
      PM: runtime: add devm_pm_runtime_enable helper
      PM: clk: add devm_pm_clk_create helper
      clk: qcom: use devm_pm_runtime_enable and devm_pm_clk_create
      clk: qcom: use common code for qcom_cc_probe_by_index
      clk: qcom: move pm_clk functionality into common code

 drivers/base/power/clock_ops.c        | 17 +++++++++++
 drivers/base/power/runtime.c          | 17 +++++++++++
 drivers/clk/qcom/camcc-sc7180.c       | 39 +++++++++----------------
 drivers/clk/qcom/common.c             | 55 ++++++++++++++++++++++++++++-------
 drivers/clk/qcom/common.h             | 17 +++++++++++
 drivers/clk/qcom/lpass-gfm-sm8250.c   | 21 ++++++-------
 drivers/clk/qcom/lpasscorecc-sc7180.c | 55 +++++++++--------------------------
 drivers/clk/qcom/mss-sc7180.c         | 45 ++++++----------------------
 drivers/clk/qcom/q6sstop-qcs404.c     | 40 +++++++------------------
 drivers/clk/qcom/turingcc-qcs404.c    | 45 ++++++----------------------
 include/linux/pm_clock.h              |  5 ++++
 include/linux/pm_runtime.h            |  4 +++
 12 files changed, 169 insertions(+), 191 deletions(-)

[PATCH v2 1/5] PM: runtime: add devm_pm_runtime_enable helper

[Dmitry Baryshkov]

Add helper function handling typical driver action: call
pm_runtime_enable at the probe() time and disable it during remove().

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
 drivers/base/power/runtime.c | 17 +++++++++++++++++
 include/linux/pm_runtime.h   |  4 ++++
 2 files changed, 21 insertions(+)

diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c
index 8a66eaf731e4..ec94049442b9 100644
--- a/drivers/base/power/runtime.c
+++ b/drivers/base/power/runtime.c
@@ -1447,6 +1447,23 @@ void pm_runtime_enable(struct device *dev)
 }
 EXPORT_SYMBOL_GPL(pm_runtime_enable);
 
+static void pm_runtime_disable_action(void *data)
+{
+	pm_runtime_disable(data);
+}
+
+/**
+ * devm_pm_runtime_enable - devres-enabled version of pm_runtime_enable.
+ * @dev: Device to handle.
+ */
+int devm_pm_runtime_enable(struct device *dev)
+{
+	pm_runtime_enable(dev);
+
+	return devm_add_action_or_reset(dev, pm_runtime_disable_action, dev);
+}
+EXPORT_SYMBOL_GPL(devm_pm_runtime_enable);
+
 /**
  * pm_runtime_forbid - Block runtime PM of a device.
  * @dev: Device to handle.
diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h
index aab8b35e9f8a..222da43b7096 100644
--- a/include/linux/pm_runtime.h
+++ b/include/linux/pm_runtime.h
@@ -59,6 +59,8 @@ extern void pm_runtime_put_suppliers(struct device *dev);
 extern void pm_runtime_new_link(struct device *dev);
 extern void pm_runtime_drop_link(struct device_link *link);
 
+extern int devm_pm_runtime_enable(struct device *dev);
+
 /**
  * pm_runtime_get_if_in_use - Conditionally bump up runtime PM usage counter.
  * @dev: Target device.
@@ -253,6 +255,8 @@ static inline void __pm_runtime_disable(struct device *dev, bool c) {}
 static inline void pm_runtime_allow(struct device *dev) {}
 static inline void pm_runtime_forbid(struct device *dev) {}
 
+static inline int devm_pm_runtime_enable(struct device *dev) { return 0; }
+
 static inline void pm_suspend_ignore_children(struct device *dev, bool enable) {}
 static inline void pm_runtime_get_noresume(struct device *dev) {}
 static inline void pm_runtime_put_noidle(struct device *dev) {}
-- 
2.30.2

[PATCH v2 2/5] PM: clk: add devm_pm_clk_create helper

[Dmitry Baryshkov]

Add devm_pm_clk_create helper, devres-enabled version of the
pm_clk_create(), which will call pm_clk_destroy at the correct time.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
 drivers/base/power/clock_ops.c | 17 +++++++++++++++++
 include/linux/pm_clock.h       |  5 +++++
 2 files changed, 22 insertions(+)

diff --git a/drivers/base/power/clock_ops.c b/drivers/base/power/clock_ops.c
index 0251f3e6e61d..4110c19c08dc 100644
--- a/drivers/base/power/clock_ops.c
+++ b/drivers/base/power/clock_ops.c
@@ -519,6 +519,23 @@ void pm_clk_destroy(struct device *dev)
 }
 EXPORT_SYMBOL_GPL(pm_clk_destroy);
 
+static void pm_clk_destroy_action(void *data)
+{
+	pm_clk_destroy(data);
+}
+
+int devm_pm_clk_create(struct device *dev)
+{
+	int ret;
+
+	ret = pm_clk_create(dev);
+	if (ret)
+		return ret;
+
+	return devm_add_action_or_reset(dev, pm_clk_destroy_action, dev);
+}
+EXPORT_SYMBOL_GPL(devm_pm_clk_create);
+
 /**
  * pm_clk_suspend - Disable clocks in a device's PM clock list.
  * @dev: Device to disable the clocks for.
diff --git a/include/linux/pm_clock.h b/include/linux/pm_clock.h
index 8ddc7860e131..ada3a0ab10bf 100644
--- a/include/linux/pm_clock.h
+++ b/include/linux/pm_clock.h
@@ -47,6 +47,7 @@ extern void pm_clk_remove(struct device *dev, const char *con_id);
 extern void pm_clk_remove_clk(struct device *dev, struct clk *clk);
 extern int pm_clk_suspend(struct device *dev);
 extern int pm_clk_resume(struct device *dev);
+extern int devm_pm_clk_create(struct device *dev);
 #else
 static inline bool pm_clk_no_clocks(struct device *dev)
 {
@@ -83,6 +84,10 @@ static inline void pm_clk_remove(struct device *dev, const char *con_id)
 static inline void pm_clk_remove_clk(struct device *dev, struct clk *clk)
 {
 }
+static inline int devm_pm_clk_create(struct device *dev)
+{
+	return -EINVAL;
+}
 #endif
 
 #ifdef CONFIG_HAVE_CLK
-- 
2.30.2

[PATCH v2 3/5] clk: qcom: use devm_pm_runtime_enable and devm_pm_clk_create

[Dmitry Baryshkov]

Use two new helpers instead of pm_runtime_enable() and pm_clk_create(),
removing the need for calling pm_runtime_disable and pm_clk_destroy().

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
 drivers/clk/qcom/camcc-sc7180.c       | 25 +++++++++------------
 drivers/clk/qcom/lpass-gfm-sm8250.c   | 21 ++++++++----------
 drivers/clk/qcom/lpasscorecc-sc7180.c | 18 ++-------------
 drivers/clk/qcom/mss-sc7180.c         | 30 +++++++------------------
 drivers/clk/qcom/q6sstop-qcs404.c     | 32 ++++++++-------------------
 drivers/clk/qcom/turingcc-qcs404.c    | 30 +++++++------------------
 6 files changed, 46 insertions(+), 110 deletions(-)

diff --git a/drivers/clk/qcom/camcc-sc7180.c b/drivers/clk/qcom/camcc-sc7180.c
index 9bcf2f8ed4de..ce73ee9037cb 100644
--- a/drivers/clk/qcom/camcc-sc7180.c
+++ b/drivers/clk/qcom/camcc-sc7180.c
@@ -1652,32 +1652,35 @@ static int cam_cc_sc7180_probe(struct platform_device *pdev)
 	struct regmap *regmap;
 	int ret;
 
-	pm_runtime_enable(&pdev->dev);
-	ret = pm_clk_create(&pdev->dev);
+	ret = devm_pm_runtime_enable(&pdev->dev);
+	if (ret < 0)
+		return ret;
+
+	ret = devm_pm_clk_create(&pdev->dev);
 	if (ret < 0)
 		return ret;
 
 	ret = pm_clk_add(&pdev->dev, "xo");
 	if (ret < 0) {
 		dev_err(&pdev->dev, "Failed to acquire XO clock\n");
-		goto disable_pm_runtime;
+		return ret;
 	}
 
 	ret = pm_clk_add(&pdev->dev, "iface");
 	if (ret < 0) {
 		dev_err(&pdev->dev, "Failed to acquire iface clock\n");
-		goto disable_pm_runtime;
+		return ret;
 	}
 
 	ret = pm_runtime_get(&pdev->dev);
 	if (ret)
-		goto destroy_pm_clk;
+		return ret;
 
 	regmap = qcom_cc_map(pdev, &cam_cc_sc7180_desc);
 	if (IS_ERR(regmap)) {
 		ret = PTR_ERR(regmap);
 		pm_runtime_put(&pdev->dev);
-		goto destroy_pm_clk;
+		return ret;
 	}
 
 	clk_fabia_pll_configure(&cam_cc_pll0, regmap, &cam_cc_pll0_config);
@@ -1689,18 +1692,10 @@ static int cam_cc_sc7180_probe(struct platform_device *pdev)
 	pm_runtime_put(&pdev->dev);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "Failed to register CAM CC clocks\n");
-		goto destroy_pm_clk;
+		return ret;
 	}
 
 	return 0;
-
-destroy_pm_clk:
-	pm_clk_destroy(&pdev->dev);
-
-disable_pm_runtime:
-	pm_runtime_disable(&pdev->dev);
-
-	return ret;
 }
 
 static const struct dev_pm_ops cam_cc_pm_ops = {
diff --git a/drivers/clk/qcom/lpass-gfm-sm8250.c b/drivers/clk/qcom/lpass-gfm-sm8250.c
index f5e31e692b9b..96f476f24eb2 100644
--- a/drivers/clk/qcom/lpass-gfm-sm8250.c
+++ b/drivers/clk/qcom/lpass-gfm-sm8250.c
@@ -251,15 +251,18 @@ static int lpass_gfm_clk_driver_probe(struct platform_device *pdev)
 	if (IS_ERR(cc->base))
 		return PTR_ERR(cc->base);
 
-	pm_runtime_enable(dev);
-	err = pm_clk_create(dev);
+	err = devm_pm_runtime_enable(dev);
 	if (err)
-		goto pm_clk_err;
+		return err;
+
+	err = devm_pm_clk_create(dev);
+	if (err)
+		return err;
 
 	err = of_pm_clk_add_clks(dev);
 	if (err < 0) {
 		dev_dbg(dev, "Failed to get lpass core voting clocks\n");
-		goto clk_reg_err;
+		return err;
 	}
 
 	for (i = 0; i < data->onecell_data->num; i++) {
@@ -273,22 +276,16 @@ static int lpass_gfm_clk_driver_probe(struct platform_device *pdev)
 
 		err = devm_clk_hw_register(dev, &data->gfm_clks[i]->hw);
 		if (err)
-			goto clk_reg_err;
+			return err;
 
 	}
 
 	err = devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get,
 					  data->onecell_data);
 	if (err)
-		goto clk_reg_err;
+		return err;
 
 	return 0;
-
-clk_reg_err:
-	pm_clk_destroy(dev);
-pm_clk_err:
-	pm_runtime_disable(dev);
-	return err;
 }
 
 static const struct of_device_id lpass_gfm_clk_match_table[] = {
diff --git a/drivers/clk/qcom/lpasscorecc-sc7180.c b/drivers/clk/qcom/lpasscorecc-sc7180.c
index 2e0ecc38efdd..ac09b7b840ab 100644
--- a/drivers/clk/qcom/lpasscorecc-sc7180.c
+++ b/drivers/clk/qcom/lpasscorecc-sc7180.c
@@ -356,32 +356,18 @@ static const struct qcom_cc_desc lpass_audio_hm_sc7180_desc = {
 	.num_gdscs = ARRAY_SIZE(lpass_audio_hm_sc7180_gdscs),
 };
 
-static void lpass_pm_runtime_disable(void *data)
-{
-	pm_runtime_disable(data);
-}
-
-static void lpass_pm_clk_destroy(void *data)
-{
-	pm_clk_destroy(data);
-}
-
 static int lpass_create_pm_clks(struct platform_device *pdev)
 {
 	int ret;
 
 	pm_runtime_use_autosuspend(&pdev->dev);
 	pm_runtime_set_autosuspend_delay(&pdev->dev, 500);
-	pm_runtime_enable(&pdev->dev);
 
-	ret = devm_add_action_or_reset(&pdev->dev, lpass_pm_runtime_disable, &pdev->dev);
+	ret = devm_pm_runtime_enable(&pdev->dev);
 	if (ret)
 		return ret;
 
-	ret = pm_clk_create(&pdev->dev);
-	if (ret)
-		return ret;
-	ret = devm_add_action_or_reset(&pdev->dev, lpass_pm_clk_destroy, &pdev->dev);
+	ret = devm_pm_clk_create(&pdev->dev);
 	if (ret)
 		return ret;
 
diff --git a/drivers/clk/qcom/mss-sc7180.c b/drivers/clk/qcom/mss-sc7180.c
index 673fa1a4f734..5a1407440662 100644
--- a/drivers/clk/qcom/mss-sc7180.c
+++ b/drivers/clk/qcom/mss-sc7180.c
@@ -73,36 +73,23 @@ static int mss_sc7180_probe(struct platform_device *pdev)
 {
 	int ret;
 
-	pm_runtime_enable(&pdev->dev);
-	ret = pm_clk_create(&pdev->dev);
+	ret = devm_pm_runtime_enable(&pdev->dev);
 	if (ret)
-		goto disable_pm_runtime;
+		return ret;
+
+	ret = devm_pm_clk_create(&pdev->dev);
+	if (ret)
+		return ret;
 
 	ret = pm_clk_add(&pdev->dev, "cfg_ahb");
 	if (ret < 0) {
 		dev_err(&pdev->dev, "failed to acquire iface clock\n");
-		goto destroy_pm_clk;
+		return ret;
 	}
 
 	ret = qcom_cc_probe(pdev, &mss_sc7180_desc);
 	if (ret < 0)
-		goto destroy_pm_clk;
-
-	return 0;
-
-destroy_pm_clk:
-	pm_clk_destroy(&pdev->dev);
-
-disable_pm_runtime:
-	pm_runtime_disable(&pdev->dev);
-
-	return ret;
-}
-
-static int mss_sc7180_remove(struct platform_device *pdev)
-{
-	pm_clk_destroy(&pdev->dev);
-	pm_runtime_disable(&pdev->dev);
+		return ret;
 
 	return 0;
 }
@@ -119,7 +106,6 @@ MODULE_DEVICE_TABLE(of, mss_sc7180_match_table);
 
 static struct platform_driver mss_sc7180_driver = {
 	.probe		= mss_sc7180_probe,
-	.remove		= mss_sc7180_remove,
 	.driver		= {
 		.name		= "sc7180-mss",
 		.of_match_table = mss_sc7180_match_table,
diff --git a/drivers/clk/qcom/q6sstop-qcs404.c b/drivers/clk/qcom/q6sstop-qcs404.c
index 723f932fbf7d..507386bee07d 100644
--- a/drivers/clk/qcom/q6sstop-qcs404.c
+++ b/drivers/clk/qcom/q6sstop-qcs404.c
@@ -159,15 +159,18 @@ static int q6sstopcc_qcs404_probe(struct platform_device *pdev)
 	const struct qcom_cc_desc *desc;
 	int ret;
 
-	pm_runtime_enable(&pdev->dev);
-	ret = pm_clk_create(&pdev->dev);
+	ret = devm_pm_runtime_enable(&pdev->dev);
 	if (ret)
-		goto disable_pm_runtime;
+		return ret;
+
+	ret = devm_pm_clk_create(&pdev->dev);
+	if (ret)
+		return ret;
 
 	ret = pm_clk_add(&pdev->dev, NULL);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "failed to acquire iface clock\n");
-		goto destroy_pm_clk;
+		return ret;
 	}
 
 	q6sstop_regmap_config.name = "q6sstop_tcsr";
@@ -175,30 +178,14 @@ static int q6sstopcc_qcs404_probe(struct platform_device *pdev)
 
 	ret = qcom_cc_probe_by_index(pdev, 1, desc);
 	if (ret)
-		goto destroy_pm_clk;
+		return ret;
 
 	q6sstop_regmap_config.name = "q6sstop_cc";
 	desc = &q6sstop_qcs404_desc;
 
 	ret = qcom_cc_probe_by_index(pdev, 0, desc);
 	if (ret)
-		goto destroy_pm_clk;
-
-	return 0;
-
-destroy_pm_clk:
-	pm_clk_destroy(&pdev->dev);
-
-disable_pm_runtime:
-	pm_runtime_disable(&pdev->dev);
-
-	return ret;
-}
-
-static int q6sstopcc_qcs404_remove(struct platform_device *pdev)
-{
-	pm_clk_destroy(&pdev->dev);
-	pm_runtime_disable(&pdev->dev);
+		return ret;
 
 	return 0;
 }
@@ -209,7 +196,6 @@ static const struct dev_pm_ops q6sstopcc_pm_ops = {
 
 static struct platform_driver q6sstopcc_qcs404_driver = {
 	.probe		= q6sstopcc_qcs404_probe,
-	.remove		= q6sstopcc_qcs404_remove,
 	.driver		= {
 		.name	= "qcs404-q6sstopcc",
 		.of_match_table = q6sstopcc_qcs404_match_table,
diff --git a/drivers/clk/qcom/turingcc-qcs404.c b/drivers/clk/qcom/turingcc-qcs404.c
index 4cfbbf5bf4d9..4543bda793f4 100644
--- a/drivers/clk/qcom/turingcc-qcs404.c
+++ b/drivers/clk/qcom/turingcc-qcs404.c
@@ -110,36 +110,23 @@ static int turingcc_probe(struct platform_device *pdev)
 {
 	int ret;
 
-	pm_runtime_enable(&pdev->dev);
-	ret = pm_clk_create(&pdev->dev);
+	ret = devm_pm_runtime_enable(&pdev->dev);
 	if (ret)
-		goto disable_pm_runtime;
+		return ret;
+
+	ret = devm_pm_clk_create(&pdev->dev);
+	if (ret)
+		return ret;
 
 	ret = pm_clk_add(&pdev->dev, NULL);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "failed to acquire iface clock\n");
-		goto destroy_pm_clk;
+		return ret;
 	}
 
 	ret = qcom_cc_probe(pdev, &turingcc_desc);
 	if (ret < 0)
-		goto destroy_pm_clk;
-
-	return 0;
-
-destroy_pm_clk:
-	pm_clk_destroy(&pdev->dev);
-
-disable_pm_runtime:
-	pm_runtime_disable(&pdev->dev);
-
-	return ret;
-}
-
-static int turingcc_remove(struct platform_device *pdev)
-{
-	pm_clk_destroy(&pdev->dev);
-	pm_runtime_disable(&pdev->dev);
+		return ret;
 
 	return 0;
 }
@@ -156,7 +143,6 @@ MODULE_DEVICE_TABLE(of, turingcc_match_table);
 
 static struct platform_driver turingcc_driver = {
 	.probe		= turingcc_probe,
-	.remove		= turingcc_remove,
 	.driver		= {
 		.name	= "qcs404-turingcc",
 		.of_match_table = turingcc_match_table,
-- 
2.30.2

[PATCH v2 4/5] clk: qcom: use common code for qcom_cc_probe_by_index

[Dmitry Baryshkov]

Rewrite qcom_cc_map and qcom_cc_probe_by_index to use (new)
qcom_cc_map_by_index, removing code duplication and opening a way to
have more common code in qcom_cc_map*.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
 drivers/clk/qcom/common.c | 21 ++++++++++-----------
 1 file changed, 10 insertions(+), 11 deletions(-)

diff --git a/drivers/clk/qcom/common.c b/drivers/clk/qcom/common.c
index 60d2a78d1395..ed7c516a597a 100644
--- a/drivers/clk/qcom/common.c
+++ b/drivers/clk/qcom/common.c
@@ -69,20 +69,26 @@ int qcom_find_src_index(struct clk_hw *hw, const struct parent_map *map, u8 src)
 }
 EXPORT_SYMBOL_GPL(qcom_find_src_index);
 
-struct regmap *
-qcom_cc_map(struct platform_device *pdev, const struct qcom_cc_desc *desc)
+static struct regmap *
+qcom_cc_map_by_index(struct platform_device *pdev, const struct qcom_cc_desc *desc, int index)
 {
 	void __iomem *base;
 	struct resource *res;
 	struct device *dev = &pdev->dev;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	res = platform_get_resource(pdev, IORESOURCE_MEM, index);
 	base = devm_ioremap_resource(dev, res);
 	if (IS_ERR(base))
 		return ERR_CAST(base);
 
 	return devm_regmap_init_mmio(dev, base, desc->config);
 }
+
+struct regmap *
+qcom_cc_map(struct platform_device *pdev, const struct qcom_cc_desc *desc)
+{
+	return qcom_cc_map_by_index(pdev, desc, 0);
+}
 EXPORT_SYMBOL_GPL(qcom_cc_map);
 
 void
@@ -313,15 +319,8 @@ int qcom_cc_probe_by_index(struct platform_device *pdev, int index,
 			   const struct qcom_cc_desc *desc)
 {
 	struct regmap *regmap;
-	struct resource *res;
-	void __iomem *base;
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, index);
-	base = devm_ioremap_resource(&pdev->dev, res);
-	if (IS_ERR(base))
-		return -ENOMEM;
 
-	regmap = devm_regmap_init_mmio(&pdev->dev, base, desc->config);
+	regmap = qcom_cc_map_by_index(pdev, desc, index);
 	if (IS_ERR(regmap))
 		return PTR_ERR(regmap);
 
-- 
2.30.2

[PATCH v2 5/5] clk: qcom: move pm_clk functionality into common code

[Dmitry Baryshkov]

Several Qualcomm clock controller drivers use pm_clk functionality.
Instead of having common code in all the drivers, move the pm_clk
handling to the qcom_cc_map/qcom_cc_probe.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
 drivers/clk/qcom/camcc-sc7180.c       | 28 +++++++-----------
 drivers/clk/qcom/common.c             | 36 +++++++++++++++++++++++
 drivers/clk/qcom/common.h             | 17 +++++++++++
 drivers/clk/qcom/lpasscorecc-sc7180.c | 41 +++++++++------------------
 drivers/clk/qcom/mss-sc7180.c         | 31 ++++++--------------
 drivers/clk/qcom/q6sstop-qcs404.c     | 22 ++++++--------
 drivers/clk/qcom/turingcc-qcs404.c    | 31 ++++++--------------
 7 files changed, 103 insertions(+), 103 deletions(-)

diff --git a/drivers/clk/qcom/camcc-sc7180.c b/drivers/clk/qcom/camcc-sc7180.c
index ce73ee9037cb..cb213b8473a5 100644
--- a/drivers/clk/qcom/camcc-sc7180.c
+++ b/drivers/clk/qcom/camcc-sc7180.c
@@ -1631,8 +1631,16 @@ static const struct regmap_config cam_cc_sc7180_regmap_config = {
 	.fast_io = true,
 };
 
+static const char * const cam_cc_sc7180_pm_clks[] = { "xo", "iface" };
+
+static const struct qcom_cc_pm cam_cc_sc7180_pm = {
+	.pm_clks = cam_cc_sc7180_pm_clks,
+	.num_pm_clks = ARRAY_SIZE(cam_cc_sc7180_pm_clks),
+};
+
 static const struct qcom_cc_desc cam_cc_sc7180_desc = {
 	.config = &cam_cc_sc7180_regmap_config,
+	.pm = &cam_cc_sc7180_pm,
 	.clk_hws = cam_cc_sc7180_hws,
 	.num_clk_hws = ARRAY_SIZE(cam_cc_sc7180_hws),
 	.clks = cam_cc_sc7180_clocks,
@@ -1652,25 +1660,9 @@ static int cam_cc_sc7180_probe(struct platform_device *pdev)
 	struct regmap *regmap;
 	int ret;
 
-	ret = devm_pm_runtime_enable(&pdev->dev);
-	if (ret < 0)
-		return ret;
-
-	ret = devm_pm_clk_create(&pdev->dev);
-	if (ret < 0)
-		return ret;
-
-	ret = pm_clk_add(&pdev->dev, "xo");
-	if (ret < 0) {
-		dev_err(&pdev->dev, "Failed to acquire XO clock\n");
-		return ret;
-	}
-
-	ret = pm_clk_add(&pdev->dev, "iface");
-	if (ret < 0) {
-		dev_err(&pdev->dev, "Failed to acquire iface clock\n");
+	ret = qcom_cc_setup_pm(pdev, &cam_cc_sc7180_desc);
+	if (ret)
 		return ret;
-	}
 
 	ret = pm_runtime_get(&pdev->dev);
 	if (ret)
diff --git a/drivers/clk/qcom/common.c b/drivers/clk/qcom/common.c
index ed7c516a597a..def01be085ba 100644
--- a/drivers/clk/qcom/common.c
+++ b/drivers/clk/qcom/common.c
@@ -7,6 +7,8 @@
 #include <linux/module.h>
 #include <linux/regmap.h>
 #include <linux/platform_device.h>
+#include <linux/pm_clock.h>
+#include <linux/pm_runtime.h>
 #include <linux/clk-provider.h>
 #include <linux/reset-controller.h>
 #include <linux/of.h>
@@ -307,6 +309,8 @@ int qcom_cc_probe(struct platform_device *pdev, const struct qcom_cc_desc *desc)
 {
 	struct regmap *regmap;
 
+	qcom_cc_setup_pm(pdev, desc);
+
 	regmap = qcom_cc_map(pdev, desc);
 	if (IS_ERR(regmap))
 		return PTR_ERR(regmap);
@@ -320,6 +324,8 @@ int qcom_cc_probe_by_index(struct platform_device *pdev, int index,
 {
 	struct regmap *regmap;
 
+	qcom_cc_setup_pm(pdev, desc);
+
 	regmap = qcom_cc_map_by_index(pdev, desc, index);
 	if (IS_ERR(regmap))
 		return PTR_ERR(regmap);
@@ -328,4 +334,34 @@ int qcom_cc_probe_by_index(struct platform_device *pdev, int index,
 }
 EXPORT_SYMBOL_GPL(qcom_cc_probe_by_index);
 
+int qcom_cc_really_setup_pm(struct platform_device *pdev, const struct qcom_cc_pm *pm)
+{
+	int ret;
+	int i;
+
+	if (!pm)
+		return -EINVAL;
+
+	ret = devm_pm_runtime_enable(&pdev->dev);
+	if (ret)
+		return ret;
+
+	if (pm->num_pm_clks) {
+		ret = devm_pm_clk_create(&pdev->dev);
+		if (ret)
+			return ret;
+	}
+
+	for (i = 0; i < pm->num_pm_clks; i++) {
+		ret = pm_clk_add(&pdev->dev, pm->pm_clks[i]);
+		if (ret < 0) {
+			dev_err(&pdev->dev, "Failed to acquire %s pm clk\n", pm->pm_clks[i]);
+			return ret;
+		}
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(qcom_cc_really_setup_pm);
+
 MODULE_LICENSE("GPL v2");
diff --git a/drivers/clk/qcom/common.h b/drivers/clk/qcom/common.h
index bb39a7e106d8..ea4394439712 100644
--- a/drivers/clk/qcom/common.h
+++ b/drivers/clk/qcom/common.h
@@ -19,8 +19,15 @@ struct clk_hw;
 #define PLL_VOTE_FSM_ENA	BIT(20)
 #define PLL_VOTE_FSM_RESET	BIT(21)
 
+/* This can be used from within the qcom_cc_desc or separately */
+struct qcom_cc_pm {
+	const char *const *pm_clks;
+	size_t num_pm_clks;
+};
+
 struct qcom_cc_desc {
 	const struct regmap_config *config;
+	const struct qcom_cc_pm *pm;
 	struct clk_regmap **clks;
 	size_t num_clks;
 	const struct qcom_reset_map *resets;
@@ -54,6 +61,16 @@ extern int qcom_cc_register_board_clk(struct device *dev, const char *path,
 				      const char *name, unsigned long rate);
 extern int qcom_cc_register_sleep_clk(struct device *dev);
 
+extern int qcom_cc_really_setup_pm(struct platform_device *pdev, const struct qcom_cc_pm *pm);
+
+static inline int qcom_cc_setup_pm(struct platform_device *pdev, const struct qcom_cc_desc *desc)
+{
+	if (!desc->pm)
+		return 0;
+
+	return qcom_cc_really_setup_pm(pdev, desc->pm);
+}
+
 extern struct regmap *qcom_cc_map(struct platform_device *pdev,
 				  const struct qcom_cc_desc *desc);
 extern int qcom_cc_really_probe(struct platform_device *pdev,
diff --git a/drivers/clk/qcom/lpasscorecc-sc7180.c b/drivers/clk/qcom/lpasscorecc-sc7180.c
index ac09b7b840ab..af1b04615d1d 100644
--- a/drivers/clk/qcom/lpasscorecc-sc7180.c
+++ b/drivers/clk/qcom/lpasscorecc-sc7180.c
@@ -338,8 +338,16 @@ static struct regmap_config lpass_core_cc_sc7180_regmap_config = {
 	.fast_io = true,
 };
 
+static const char * const lpass_core_sc7180_pm_clks[] = { "iface" };
+
+static const struct qcom_cc_pm lpass_core_sc7180_pm = {
+	.pm_clks = lpass_core_sc7180_pm_clks,
+	.num_pm_clks = ARRAY_SIZE(lpass_core_sc7180_pm_clks),
+};
+
 static const struct qcom_cc_desc lpass_core_hm_sc7180_desc = {
 	.config = &lpass_core_cc_sc7180_regmap_config,
+	.pm = &lpass_core_sc7180_pm,
 	.gdscs = lpass_core_hm_sc7180_gdscs,
 	.num_gdscs = ARRAY_SIZE(lpass_core_hm_sc7180_gdscs),
 };
@@ -356,35 +364,16 @@ static const struct qcom_cc_desc lpass_audio_hm_sc7180_desc = {
 	.num_gdscs = ARRAY_SIZE(lpass_audio_hm_sc7180_gdscs),
 };
 
-static int lpass_create_pm_clks(struct platform_device *pdev)
-{
-	int ret;
-
-	pm_runtime_use_autosuspend(&pdev->dev);
-	pm_runtime_set_autosuspend_delay(&pdev->dev, 500);
-
-	ret = devm_pm_runtime_enable(&pdev->dev);
-	if (ret)
-		return ret;
-
-	ret = devm_pm_clk_create(&pdev->dev);
-	if (ret)
-		return ret;
-
-	ret = pm_clk_add(&pdev->dev, "iface");
-	if (ret < 0)
-		dev_err(&pdev->dev, "failed to acquire iface clock\n");
-
-	return ret;
-}
-
 static int lpass_core_cc_sc7180_probe(struct platform_device *pdev)
 {
 	const struct qcom_cc_desc *desc;
 	struct regmap *regmap;
 	int ret;
 
-	ret = lpass_create_pm_clks(pdev);
+	pm_runtime_use_autosuspend(&pdev->dev);
+	pm_runtime_set_autosuspend_delay(&pdev->dev, 500);
+
+	ret = qcom_cc_really_setup_pm(pdev, &lpass_core_sc7180_pm);
 	if (ret)
 		return ret;
 
@@ -423,11 +412,9 @@ static int lpass_core_cc_sc7180_probe(struct platform_device *pdev)
 static int lpass_hm_core_probe(struct platform_device *pdev)
 {
 	const struct qcom_cc_desc *desc;
-	int ret;
 
-	ret = lpass_create_pm_clks(pdev);
-	if (ret)
-		return ret;
+	pm_runtime_use_autosuspend(&pdev->dev);
+	pm_runtime_set_autosuspend_delay(&pdev->dev, 500);
 
 	lpass_core_cc_sc7180_regmap_config.name = "lpass_hm_core";
 	desc = &lpass_core_hm_sc7180_desc;
diff --git a/drivers/clk/qcom/mss-sc7180.c b/drivers/clk/qcom/mss-sc7180.c
index 5a1407440662..47feca261985 100644
--- a/drivers/clk/qcom/mss-sc7180.c
+++ b/drivers/clk/qcom/mss-sc7180.c
@@ -7,7 +7,6 @@
 #include <linux/platform_device.h>
 #include <linux/module.h>
 #include <linux/pm_clock.h>
-#include <linux/pm_runtime.h>
 #include <linux/regmap.h>
 
 #include <dt-bindings/clock/qcom,mss-sc7180.h>
@@ -63,35 +62,23 @@ static struct clk_regmap *mss_sc7180_clocks[] = {
 	[MSS_AXI_NAV_CLK] = &mss_axi_nav_clk.clkr,
 };
 
+static const char * const mss_sc7180_pm_clks[] = { "cfg_ahb" };
+
+static const struct qcom_cc_pm mss_sc7180_pm = {
+	.pm_clks = mss_sc7180_pm_clks,
+	.num_pm_clks = ARRAY_SIZE(mss_sc7180_pm_clks),
+};
+
 static const struct qcom_cc_desc mss_sc7180_desc = {
 	.config = &mss_regmap_config,
+	.pm = &mss_sc7180_pm,
 	.clks = mss_sc7180_clocks,
 	.num_clks = ARRAY_SIZE(mss_sc7180_clocks),
 };
 
 static int mss_sc7180_probe(struct platform_device *pdev)
 {
-	int ret;
-
-	ret = devm_pm_runtime_enable(&pdev->dev);
-	if (ret)
-		return ret;
-
-	ret = devm_pm_clk_create(&pdev->dev);
-	if (ret)
-		return ret;
-
-	ret = pm_clk_add(&pdev->dev, "cfg_ahb");
-	if (ret < 0) {
-		dev_err(&pdev->dev, "failed to acquire iface clock\n");
-		return ret;
-	}
-
-	ret = qcom_cc_probe(pdev, &mss_sc7180_desc);
-	if (ret < 0)
-		return ret;
-
-	return 0;
+	return qcom_cc_probe(pdev, &mss_sc7180_desc);
 }
 
 static const struct dev_pm_ops mss_sc7180_pm_ops = {
diff --git a/drivers/clk/qcom/q6sstop-qcs404.c b/drivers/clk/qcom/q6sstop-qcs404.c
index 507386bee07d..e19ee2b047ac 100644
--- a/drivers/clk/qcom/q6sstop-qcs404.c
+++ b/drivers/clk/qcom/q6sstop-qcs404.c
@@ -8,7 +8,6 @@
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/pm_clock.h>
-#include <linux/pm_runtime.h>
 #include <linux/regmap.h>
 
 #include <dt-bindings/clock/qcom,q6sstopcc-qcs404.h>
@@ -117,6 +116,13 @@ static struct regmap_config q6sstop_regmap_config = {
 	.fast_io	= true,
 };
 
+static const char * const q6sstop_qcs404_pm_clks[] = { NULL };
+
+static const struct qcom_cc_pm q6sstop_qcs404_pm = {
+	.pm_clks = q6sstop_qcs404_pm_clks,
+	.num_pm_clks = ARRAY_SIZE(q6sstop_qcs404_pm_clks),
+};
+
 static struct clk_regmap *q6sstop_qcs404_clocks[] = {
 	[LCC_AHBFABRIC_CBC_CLK] = &lcc_ahbfabric_cbc_clk.clkr,
 	[LCC_Q6SS_AHBS_CBC_CLK] = &lcc_q6ss_ahbs_cbc_clk.clkr,
@@ -159,19 +165,7 @@ static int q6sstopcc_qcs404_probe(struct platform_device *pdev)
 	const struct qcom_cc_desc *desc;
 	int ret;
 
-	ret = devm_pm_runtime_enable(&pdev->dev);
-	if (ret)
-		return ret;
-
-	ret = devm_pm_clk_create(&pdev->dev);
-	if (ret)
-		return ret;
-
-	ret = pm_clk_add(&pdev->dev, NULL);
-	if (ret < 0) {
-		dev_err(&pdev->dev, "failed to acquire iface clock\n");
-		return ret;
-	}
+	ret = qcom_cc_really_setup_pm(pdev, &q6sstop_qcs404_pm);
 
 	q6sstop_regmap_config.name = "q6sstop_tcsr";
 	desc = &tcsr_qcs404_desc;
diff --git a/drivers/clk/qcom/turingcc-qcs404.c b/drivers/clk/qcom/turingcc-qcs404.c
index 4543bda793f4..a2ac9e6da13c 100644
--- a/drivers/clk/qcom/turingcc-qcs404.c
+++ b/drivers/clk/qcom/turingcc-qcs404.c
@@ -9,7 +9,6 @@
 #include <linux/module.h>
 #include <linux/of_address.h>
 #include <linux/pm_clock.h>
-#include <linux/pm_runtime.h>
 #include <linux/regmap.h>
 
 #include <dt-bindings/clock/qcom,turingcc-qcs404.h>
@@ -100,35 +99,23 @@ static const struct regmap_config turingcc_regmap_config = {
 	.fast_io	= true,
 };
 
+static const char * const turingcc_pm_clks[] = { NULL };
+
+static const struct qcom_cc_pm turingcc_pm = {
+	.pm_clks = turingcc_pm_clks,
+	.num_pm_clks = ARRAY_SIZE(turingcc_pm_clks),
+};
+
 static const struct qcom_cc_desc turingcc_desc = {
 	.config = &turingcc_regmap_config,
+	.pm = &turingcc_pm,
 	.clks = turingcc_clocks,
 	.num_clks = ARRAY_SIZE(turingcc_clocks),
 };
 
 static int turingcc_probe(struct platform_device *pdev)
 {
-	int ret;
-
-	ret = devm_pm_runtime_enable(&pdev->dev);
-	if (ret)
-		return ret;
-
-	ret = devm_pm_clk_create(&pdev->dev);
-	if (ret)
-		return ret;
-
-	ret = pm_clk_add(&pdev->dev, NULL);
-	if (ret < 0) {
-		dev_err(&pdev->dev, "failed to acquire iface clock\n");
-		return ret;
-	}
-
-	ret = qcom_cc_probe(pdev, &turingcc_desc);
-	if (ret < 0)
-		return ret;
-
-	return 0;
+	return qcom_cc_probe(pdev, &turingcc_desc);
 }
 
 static const struct dev_pm_ops turingcc_pm_ops = {
-- 
2.30.2

Re: [PATCH v2 3/5] clk: qcom: use devm_pm_runtime_enable and devm_pm_clk_create

[Bjorn Andersson]

On Wed 28 Jul 09:24 CDT 2021, Dmitry Baryshkov wrote:

> Use two new helpers instead of pm_runtime_enable() and pm_clk_create(),
> removing the need for calling pm_runtime_disable and pm_clk_destroy().
> 
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

It's quite reasonable to expect that Rafael wants to take the two first
patches through his tree, but I expect that these clock patches will
conflict with your other changes resulting in a less smooth path into
mainline.

Grepping the tree for candidates I find many better examples, that
we don't foresee any conflicting changes..

So may I suggest that you fix drivers/hwspinlock/omap_hwspinlock.c and
drivers/hwspinlock/stm32_hwspinlock.c, then I (as maintainer) can Ack
those changes and Rafael can take the series in his tree for v5.15.


Then as v5.15-rc1 lands, we have the API and we can follow up changing
these more complex drivers - and those patches can go through the
individual maintainer trees.

Regards,
Bjorn

> ---
>  drivers/clk/qcom/camcc-sc7180.c       | 25 +++++++++------------
>  drivers/clk/qcom/lpass-gfm-sm8250.c   | 21 ++++++++----------
>  drivers/clk/qcom/lpasscorecc-sc7180.c | 18 ++-------------
>  drivers/clk/qcom/mss-sc7180.c         | 30 +++++++------------------
>  drivers/clk/qcom/q6sstop-qcs404.c     | 32 ++++++++-------------------
>  drivers/clk/qcom/turingcc-qcs404.c    | 30 +++++++------------------
>  6 files changed, 46 insertions(+), 110 deletions(-)
> 
> diff --git a/drivers/clk/qcom/camcc-sc7180.c b/drivers/clk/qcom/camcc-sc7180.c
> index 9bcf2f8ed4de..ce73ee9037cb 100644
> --- a/drivers/clk/qcom/camcc-sc7180.c
> +++ b/drivers/clk/qcom/camcc-sc7180.c
> @@ -1652,32 +1652,35 @@ static int cam_cc_sc7180_probe(struct platform_device *pdev)
>  	struct regmap *regmap;
>  	int ret;
>  
> -	pm_runtime_enable(&pdev->dev);
> -	ret = pm_clk_create(&pdev->dev);
> +	ret = devm_pm_runtime_enable(&pdev->dev);
> +	if (ret < 0)
> +		return ret;
> +
> +	ret = devm_pm_clk_create(&pdev->dev);
>  	if (ret < 0)
>  		return ret;
>  
>  	ret = pm_clk_add(&pdev->dev, "xo");
>  	if (ret < 0) {
>  		dev_err(&pdev->dev, "Failed to acquire XO clock\n");
> -		goto disable_pm_runtime;
> +		return ret;
>  	}
>  
>  	ret = pm_clk_add(&pdev->dev, "iface");
>  	if (ret < 0) {
>  		dev_err(&pdev->dev, "Failed to acquire iface clock\n");
> -		goto disable_pm_runtime;
> +		return ret;
>  	}
>  
>  	ret = pm_runtime_get(&pdev->dev);
>  	if (ret)
> -		goto destroy_pm_clk;
> +		return ret;
>  
>  	regmap = qcom_cc_map(pdev, &cam_cc_sc7180_desc);
>  	if (IS_ERR(regmap)) {
>  		ret = PTR_ERR(regmap);
>  		pm_runtime_put(&pdev->dev);
> -		goto destroy_pm_clk;
> +		return ret;
>  	}
>  
>  	clk_fabia_pll_configure(&cam_cc_pll0, regmap, &cam_cc_pll0_config);
> @@ -1689,18 +1692,10 @@ static int cam_cc_sc7180_probe(struct platform_device *pdev)
>  	pm_runtime_put(&pdev->dev);
>  	if (ret < 0) {
>  		dev_err(&pdev->dev, "Failed to register CAM CC clocks\n");
> -		goto destroy_pm_clk;
> +		return ret;
>  	}
>  
>  	return 0;
> -
> -destroy_pm_clk:
> -	pm_clk_destroy(&pdev->dev);
> -
> -disable_pm_runtime:
> -	pm_runtime_disable(&pdev->dev);
> -
> -	return ret;
>  }
>  
>  static const struct dev_pm_ops cam_cc_pm_ops = {
> diff --git a/drivers/clk/qcom/lpass-gfm-sm8250.c b/drivers/clk/qcom/lpass-gfm-sm8250.c
> index f5e31e692b9b..96f476f24eb2 100644
> --- a/drivers/clk/qcom/lpass-gfm-sm8250.c
> +++ b/drivers/clk/qcom/lpass-gfm-sm8250.c
> @@ -251,15 +251,18 @@ static int lpass_gfm_clk_driver_probe(struct platform_device *pdev)
>  	if (IS_ERR(cc->base))
>  		return PTR_ERR(cc->base);
>  
> -	pm_runtime_enable(dev);
> -	err = pm_clk_create(dev);
> +	err = devm_pm_runtime_enable(dev);
>  	if (err)
> -		goto pm_clk_err;
> +		return err;
> +
> +	err = devm_pm_clk_create(dev);
> +	if (err)
> +		return err;
>  
>  	err = of_pm_clk_add_clks(dev);
>  	if (err < 0) {
>  		dev_dbg(dev, "Failed to get lpass core voting clocks\n");
> -		goto clk_reg_err;
> +		return err;
>  	}
>  
>  	for (i = 0; i < data->onecell_data->num; i++) {
> @@ -273,22 +276,16 @@ static int lpass_gfm_clk_driver_probe(struct platform_device *pdev)
>  
>  		err = devm_clk_hw_register(dev, &data->gfm_clks[i]->hw);
>  		if (err)
> -			goto clk_reg_err;
> +			return err;
>  
>  	}
>  
>  	err = devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get,
>  					  data->onecell_data);
>  	if (err)
> -		goto clk_reg_err;
> +		return err;
>  
>  	return 0;
> -
> -clk_reg_err:
> -	pm_clk_destroy(dev);
> -pm_clk_err:
> -	pm_runtime_disable(dev);
> -	return err;
>  }
>  
>  static const struct of_device_id lpass_gfm_clk_match_table[] = {
> diff --git a/drivers/clk/qcom/lpasscorecc-sc7180.c b/drivers/clk/qcom/lpasscorecc-sc7180.c
> index 2e0ecc38efdd..ac09b7b840ab 100644
> --- a/drivers/clk/qcom/lpasscorecc-sc7180.c
> +++ b/drivers/clk/qcom/lpasscorecc-sc7180.c
> @@ -356,32 +356,18 @@ static const struct qcom_cc_desc lpass_audio_hm_sc7180_desc = {
>  	.num_gdscs = ARRAY_SIZE(lpass_audio_hm_sc7180_gdscs),
>  };
>  
> -static void lpass_pm_runtime_disable(void *data)
> -{
> -	pm_runtime_disable(data);
> -}
> -
> -static void lpass_pm_clk_destroy(void *data)
> -{
> -	pm_clk_destroy(data);
> -}
> -
>  static int lpass_create_pm_clks(struct platform_device *pdev)
>  {
>  	int ret;
>  
>  	pm_runtime_use_autosuspend(&pdev->dev);
>  	pm_runtime_set_autosuspend_delay(&pdev->dev, 500);
> -	pm_runtime_enable(&pdev->dev);
>  
> -	ret = devm_add_action_or_reset(&pdev->dev, lpass_pm_runtime_disable, &pdev->dev);
> +	ret = devm_pm_runtime_enable(&pdev->dev);
>  	if (ret)
>  		return ret;
>  
> -	ret = pm_clk_create(&pdev->dev);
> -	if (ret)
> -		return ret;
> -	ret = devm_add_action_or_reset(&pdev->dev, lpass_pm_clk_destroy, &pdev->dev);
> +	ret = devm_pm_clk_create(&pdev->dev);
>  	if (ret)
>  		return ret;
>  
> diff --git a/drivers/clk/qcom/mss-sc7180.c b/drivers/clk/qcom/mss-sc7180.c
> index 673fa1a4f734..5a1407440662 100644
> --- a/drivers/clk/qcom/mss-sc7180.c
> +++ b/drivers/clk/qcom/mss-sc7180.c
> @@ -73,36 +73,23 @@ static int mss_sc7180_probe(struct platform_device *pdev)
>  {
>  	int ret;
>  
> -	pm_runtime_enable(&pdev->dev);
> -	ret = pm_clk_create(&pdev->dev);
> +	ret = devm_pm_runtime_enable(&pdev->dev);
>  	if (ret)
> -		goto disable_pm_runtime;
> +		return ret;
> +
> +	ret = devm_pm_clk_create(&pdev->dev);
> +	if (ret)
> +		return ret;
>  
>  	ret = pm_clk_add(&pdev->dev, "cfg_ahb");
>  	if (ret < 0) {
>  		dev_err(&pdev->dev, "failed to acquire iface clock\n");
> -		goto destroy_pm_clk;
> +		return ret;
>  	}
>  
>  	ret = qcom_cc_probe(pdev, &mss_sc7180_desc);
>  	if (ret < 0)
> -		goto destroy_pm_clk;
> -
> -	return 0;
> -
> -destroy_pm_clk:
> -	pm_clk_destroy(&pdev->dev);
> -
> -disable_pm_runtime:
> -	pm_runtime_disable(&pdev->dev);
> -
> -	return ret;
> -}
> -
> -static int mss_sc7180_remove(struct platform_device *pdev)
> -{
> -	pm_clk_destroy(&pdev->dev);
> -	pm_runtime_disable(&pdev->dev);
> +		return ret;
>  
>  	return 0;
>  }
> @@ -119,7 +106,6 @@ MODULE_DEVICE_TABLE(of, mss_sc7180_match_table);
>  
>  static struct platform_driver mss_sc7180_driver = {
>  	.probe		= mss_sc7180_probe,
> -	.remove		= mss_sc7180_remove,
>  	.driver		= {
>  		.name		= "sc7180-mss",
>  		.of_match_table = mss_sc7180_match_table,
> diff --git a/drivers/clk/qcom/q6sstop-qcs404.c b/drivers/clk/qcom/q6sstop-qcs404.c
> index 723f932fbf7d..507386bee07d 100644
> --- a/drivers/clk/qcom/q6sstop-qcs404.c
> +++ b/drivers/clk/qcom/q6sstop-qcs404.c
> @@ -159,15 +159,18 @@ static int q6sstopcc_qcs404_probe(struct platform_device *pdev)
>  	const struct qcom_cc_desc *desc;
>  	int ret;
>  
> -	pm_runtime_enable(&pdev->dev);
> -	ret = pm_clk_create(&pdev->dev);
> +	ret = devm_pm_runtime_enable(&pdev->dev);
>  	if (ret)
> -		goto disable_pm_runtime;
> +		return ret;
> +
> +	ret = devm_pm_clk_create(&pdev->dev);
> +	if (ret)
> +		return ret;
>  
>  	ret = pm_clk_add(&pdev->dev, NULL);
>  	if (ret < 0) {
>  		dev_err(&pdev->dev, "failed to acquire iface clock\n");
> -		goto destroy_pm_clk;
> +		return ret;
>  	}
>  
>  	q6sstop_regmap_config.name = "q6sstop_tcsr";
> @@ -175,30 +178,14 @@ static int q6sstopcc_qcs404_probe(struct platform_device *pdev)
>  
>  	ret = qcom_cc_probe_by_index(pdev, 1, desc);
>  	if (ret)
> -		goto destroy_pm_clk;
> +		return ret;
>  
>  	q6sstop_regmap_config.name = "q6sstop_cc";
>  	desc = &q6sstop_qcs404_desc;
>  
>  	ret = qcom_cc_probe_by_index(pdev, 0, desc);
>  	if (ret)
> -		goto destroy_pm_clk;
> -
> -	return 0;
> -
> -destroy_pm_clk:
> -	pm_clk_destroy(&pdev->dev);
> -
> -disable_pm_runtime:
> -	pm_runtime_disable(&pdev->dev);
> -
> -	return ret;
> -}
> -
> -static int q6sstopcc_qcs404_remove(struct platform_device *pdev)
> -{
> -	pm_clk_destroy(&pdev->dev);
> -	pm_runtime_disable(&pdev->dev);
> +		return ret;
>  
>  	return 0;
>  }
> @@ -209,7 +196,6 @@ static const struct dev_pm_ops q6sstopcc_pm_ops = {
>  
>  static struct platform_driver q6sstopcc_qcs404_driver = {
>  	.probe		= q6sstopcc_qcs404_probe,
> -	.remove		= q6sstopcc_qcs404_remove,
>  	.driver		= {
>  		.name	= "qcs404-q6sstopcc",
>  		.of_match_table = q6sstopcc_qcs404_match_table,
> diff --git a/drivers/clk/qcom/turingcc-qcs404.c b/drivers/clk/qcom/turingcc-qcs404.c
> index 4cfbbf5bf4d9..4543bda793f4 100644
> --- a/drivers/clk/qcom/turingcc-qcs404.c
> +++ b/drivers/clk/qcom/turingcc-qcs404.c
> @@ -110,36 +110,23 @@ static int turingcc_probe(struct platform_device *pdev)
>  {
>  	int ret;
>  
> -	pm_runtime_enable(&pdev->dev);
> -	ret = pm_clk_create(&pdev->dev);
> +	ret = devm_pm_runtime_enable(&pdev->dev);
>  	if (ret)
> -		goto disable_pm_runtime;
> +		return ret;
> +
> +	ret = devm_pm_clk_create(&pdev->dev);
> +	if (ret)
> +		return ret;
>  
>  	ret = pm_clk_add(&pdev->dev, NULL);
>  	if (ret < 0) {
>  		dev_err(&pdev->dev, "failed to acquire iface clock\n");
> -		goto destroy_pm_clk;
> +		return ret;
>  	}
>  
>  	ret = qcom_cc_probe(pdev, &turingcc_desc);
>  	if (ret < 0)
> -		goto destroy_pm_clk;
> -
> -	return 0;
> -
> -destroy_pm_clk:
> -	pm_clk_destroy(&pdev->dev);
> -
> -disable_pm_runtime:
> -	pm_runtime_disable(&pdev->dev);
> -
> -	return ret;
> -}
> -
> -static int turingcc_remove(struct platform_device *pdev)
> -{
> -	pm_clk_destroy(&pdev->dev);
> -	pm_runtime_disable(&pdev->dev);
> +		return ret;
>  
>  	return 0;
>  }
> @@ -156,7 +143,6 @@ MODULE_DEVICE_TABLE(of, turingcc_match_table);
>  
>  static struct platform_driver turingcc_driver = {
>  	.probe		= turingcc_probe,
> -	.remove		= turingcc_remove,
>  	.driver		= {
>  		.name	= "qcs404-turingcc",
>  		.of_match_table = turingcc_match_table,
> -- 
> 2.30.2
> 

Re: [PATCH v2 1/5] PM: runtime: add devm_pm_runtime_enable helper

[Bjorn Andersson]

On Wed 28 Jul 07:24 PDT 2021, Dmitry Baryshkov wrote:

> Add helper function handling typical driver action: call
> pm_runtime_enable at the probe() time and disable it during remove().
> 

This says what the patch does, but it doesn't say why we would like
these helpers - i.e. the fact that it's quite common across the kernel
to have error handlers and remove functions that simply has to do
pm_runtime_disable().

> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
> ---
>  drivers/base/power/runtime.c | 17 +++++++++++++++++
>  include/linux/pm_runtime.h   |  4 ++++
>  2 files changed, 21 insertions(+)
> 
> diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c
> index 8a66eaf731e4..ec94049442b9 100644
> --- a/drivers/base/power/runtime.c
> +++ b/drivers/base/power/runtime.c
> @@ -1447,6 +1447,23 @@ void pm_runtime_enable(struct device *dev)
>  }
>  EXPORT_SYMBOL_GPL(pm_runtime_enable);
>  
> +static void pm_runtime_disable_action(void *data)
> +{
> +	pm_runtime_disable(data);
> +}
> +
> +/**
> + * devm_pm_runtime_enable - devres-enabled version of pm_runtime_enable.

() on the function name.

> + * @dev: Device to handle.

Returns: 0 on success, negative errno on failure

Regards,
Bjorn

> + */
> +int devm_pm_runtime_enable(struct device *dev)
> +{
> +	pm_runtime_enable(dev);
> +
> +	return devm_add_action_or_reset(dev, pm_runtime_disable_action, dev);
> +}
> +EXPORT_SYMBOL_GPL(devm_pm_runtime_enable);
> +
>  /**
>   * pm_runtime_forbid - Block runtime PM of a device.
>   * @dev: Device to handle.
> diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h
> index aab8b35e9f8a..222da43b7096 100644
> --- a/include/linux/pm_runtime.h
> +++ b/include/linux/pm_runtime.h
> @@ -59,6 +59,8 @@ extern void pm_runtime_put_suppliers(struct device *dev);
>  extern void pm_runtime_new_link(struct device *dev);
>  extern void pm_runtime_drop_link(struct device_link *link);
>  
> +extern int devm_pm_runtime_enable(struct device *dev);
> +
>  /**
>   * pm_runtime_get_if_in_use - Conditionally bump up runtime PM usage counter.
>   * @dev: Target device.
> @@ -253,6 +255,8 @@ static inline void __pm_runtime_disable(struct device *dev, bool c) {}
>  static inline void pm_runtime_allow(struct device *dev) {}
>  static inline void pm_runtime_forbid(struct device *dev) {}
>  
> +static inline int devm_pm_runtime_enable(struct device *dev) { return 0; }
> +
>  static inline void pm_suspend_ignore_children(struct device *dev, bool enable) {}
>  static inline void pm_runtime_get_noresume(struct device *dev) {}
>  static inline void pm_runtime_put_noidle(struct device *dev) {}
> -- 
> 2.30.2
> 

Re: [PATCH v2 2/5] PM: clk: add devm_pm_clk_create helper

[Bjorn Andersson]

On Wed 28 Jul 07:24 PDT 2021, Dmitry Baryshkov wrote:

> Add devm_pm_clk_create helper, devres-enabled version of the
> pm_clk_create(), which will call pm_clk_destroy at the correct time.
> 

As with path 1, please describe why this is a good thing. (I definitely
think it is, but I've been part of the discussion leading up to this
patch)

> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
> ---
>  drivers/base/power/clock_ops.c | 17 +++++++++++++++++
>  include/linux/pm_clock.h       |  5 +++++
>  2 files changed, 22 insertions(+)
> 
> diff --git a/drivers/base/power/clock_ops.c b/drivers/base/power/clock_ops.c
> index 0251f3e6e61d..4110c19c08dc 100644
> --- a/drivers/base/power/clock_ops.c
> +++ b/drivers/base/power/clock_ops.c
> @@ -519,6 +519,23 @@ void pm_clk_destroy(struct device *dev)
>  }
>  EXPORT_SYMBOL_GPL(pm_clk_destroy);
>  
> +static void pm_clk_destroy_action(void *data)
> +{
> +	pm_clk_destroy(data);
> +}
> +

As this is an addition to the API, it deserves some kerneldoc.

Regards,
Bjorn

> +int devm_pm_clk_create(struct device *dev)
> +{
> +	int ret;
> +
> +	ret = pm_clk_create(dev);
> +	if (ret)
> +		return ret;
> +
> +	return devm_add_action_or_reset(dev, pm_clk_destroy_action, dev);
> +}
> +EXPORT_SYMBOL_GPL(devm_pm_clk_create);
> +
>  /**
>   * pm_clk_suspend - Disable clocks in a device's PM clock list.
>   * @dev: Device to disable the clocks for.
> diff --git a/include/linux/pm_clock.h b/include/linux/pm_clock.h
> index 8ddc7860e131..ada3a0ab10bf 100644
> --- a/include/linux/pm_clock.h
> +++ b/include/linux/pm_clock.h
> @@ -47,6 +47,7 @@ extern void pm_clk_remove(struct device *dev, const char *con_id);
>  extern void pm_clk_remove_clk(struct device *dev, struct clk *clk);
>  extern int pm_clk_suspend(struct device *dev);
>  extern int pm_clk_resume(struct device *dev);
> +extern int devm_pm_clk_create(struct device *dev);
>  #else
>  static inline bool pm_clk_no_clocks(struct device *dev)
>  {
> @@ -83,6 +84,10 @@ static inline void pm_clk_remove(struct device *dev, const char *con_id)
>  static inline void pm_clk_remove_clk(struct device *dev, struct clk *clk)
>  {
>  }
> +static inline int devm_pm_clk_create(struct device *dev)
> +{
> +	return -EINVAL;
> +}
>  #endif
>  
>  #ifdef CONFIG_HAVE_CLK
> -- 
> 2.30.2
> 

Re: [PATCH v2 3/5] clk: qcom: use devm_pm_runtime_enable and devm_pm_clk_create

[Dmitry Baryshkov]

On Wed, 28 Jul 2021 at 18:00, Bjorn Andersson
<bjorn.andersson@linaro.org> wrote:
>
> On Wed 28 Jul 09:24 CDT 2021, Dmitry Baryshkov wrote:
>
> > Use two new helpers instead of pm_runtime_enable() and pm_clk_create(),
> > removing the need for calling pm_runtime_disable and pm_clk_destroy().
> >
> > Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
>
> It's quite reasonable to expect that Rafael wants to take the two first
> patches through his tree, but I expect that these clock patches will
> conflict with your other changes resulting in a less smooth path into
> mainline.

I do not expect any conflicts in the clock code. The gdsc fixes do not
touch these parts.

> Grepping the tree for candidates I find many better examples, that
> we don't foresee any conflicting changes..
>
> So may I suggest that you fix drivers/hwspinlock/omap_hwspinlock.c and
> drivers/hwspinlock/stm32_hwspinlock.c, then I (as maintainer) can Ack
> those changes and Rafael can take the series in his tree for v5.15.

These two would use devm_pm_runtime_enable, but not the
devm_pm_clk_create. Thus I'd still prefer to modify these few drivers
(note, the generification is a separate patch and I can safely drop it
for now).

> Then as v5.15-rc1 lands, we have the API and we can follow up changing
> these more complex drivers - and those patches can go through the
> individual maintainer trees.
>
> Regards,
> Bjorn
>
> > ---
> >  drivers/clk/qcom/camcc-sc7180.c       | 25 +++++++++------------
> >  drivers/clk/qcom/lpass-gfm-sm8250.c   | 21 ++++++++----------
> >  drivers/clk/qcom/lpasscorecc-sc7180.c | 18 ++-------------
> >  drivers/clk/qcom/mss-sc7180.c         | 30 +++++++------------------
> >  drivers/clk/qcom/q6sstop-qcs404.c     | 32 ++++++++-------------------
> >  drivers/clk/qcom/turingcc-qcs404.c    | 30 +++++++------------------
> >  6 files changed, 46 insertions(+), 110 deletions(-)
> >
> > diff --git a/drivers/clk/qcom/camcc-sc7180.c b/drivers/clk/qcom/camcc-sc7180.c
> > index 9bcf2f8ed4de..ce73ee9037cb 100644
> > --- a/drivers/clk/qcom/camcc-sc7180.c
> > +++ b/drivers/clk/qcom/camcc-sc7180.c
> > @@ -1652,32 +1652,35 @@ static int cam_cc_sc7180_probe(struct platform_device *pdev)
> >       struct regmap *regmap;
> >       int ret;
> >
> > -     pm_runtime_enable(&pdev->dev);
> > -     ret = pm_clk_create(&pdev->dev);
> > +     ret = devm_pm_runtime_enable(&pdev->dev);
> > +     if (ret < 0)
> > +             return ret;
> > +
> > +     ret = devm_pm_clk_create(&pdev->dev);
> >       if (ret < 0)
> >               return ret;
> >
> >       ret = pm_clk_add(&pdev->dev, "xo");
> >       if (ret < 0) {
> >               dev_err(&pdev->dev, "Failed to acquire XO clock\n");
> > -             goto disable_pm_runtime;
> > +             return ret;
> >       }
> >
> >       ret = pm_clk_add(&pdev->dev, "iface");
> >       if (ret < 0) {
> >               dev_err(&pdev->dev, "Failed to acquire iface clock\n");
> > -             goto disable_pm_runtime;
> > +             return ret;
> >       }
> >
> >       ret = pm_runtime_get(&pdev->dev);
> >       if (ret)
> > -             goto destroy_pm_clk;
> > +             return ret;
> >
> >       regmap = qcom_cc_map(pdev, &cam_cc_sc7180_desc);
> >       if (IS_ERR(regmap)) {
> >               ret = PTR_ERR(regmap);
> >               pm_runtime_put(&pdev->dev);
> > -             goto destroy_pm_clk;
> > +             return ret;
> >       }
> >
> >       clk_fabia_pll_configure(&cam_cc_pll0, regmap, &cam_cc_pll0_config);
> > @@ -1689,18 +1692,10 @@ static int cam_cc_sc7180_probe(struct platform_device *pdev)
> >       pm_runtime_put(&pdev->dev);
> >       if (ret < 0) {
> >               dev_err(&pdev->dev, "Failed to register CAM CC clocks\n");
> > -             goto destroy_pm_clk;
> > +             return ret;
> >       }
> >
> >       return 0;
> > -
> > -destroy_pm_clk:
> > -     pm_clk_destroy(&pdev->dev);
> > -
> > -disable_pm_runtime:
> > -     pm_runtime_disable(&pdev->dev);
> > -
> > -     return ret;
> >  }
> >
> >  static const struct dev_pm_ops cam_cc_pm_ops = {
> > diff --git a/drivers/clk/qcom/lpass-gfm-sm8250.c b/drivers/clk/qcom/lpass-gfm-sm8250.c
> > index f5e31e692b9b..96f476f24eb2 100644
> > --- a/drivers/clk/qcom/lpass-gfm-sm8250.c
> > +++ b/drivers/clk/qcom/lpass-gfm-sm8250.c
> > @@ -251,15 +251,18 @@ static int lpass_gfm_clk_driver_probe(struct platform_device *pdev)
> >       if (IS_ERR(cc->base))
> >               return PTR_ERR(cc->base);
> >
> > -     pm_runtime_enable(dev);
> > -     err = pm_clk_create(dev);
> > +     err = devm_pm_runtime_enable(dev);
> >       if (err)
> > -             goto pm_clk_err;
> > +             return err;
> > +
> > +     err = devm_pm_clk_create(dev);
> > +     if (err)
> > +             return err;
> >
> >       err = of_pm_clk_add_clks(dev);
> >       if (err < 0) {
> >               dev_dbg(dev, "Failed to get lpass core voting clocks\n");
> > -             goto clk_reg_err;
> > +             return err;
> >       }
> >
> >       for (i = 0; i < data->onecell_data->num; i++) {
> > @@ -273,22 +276,16 @@ static int lpass_gfm_clk_driver_probe(struct platform_device *pdev)
> >
> >               err = devm_clk_hw_register(dev, &data->gfm_clks[i]->hw);
> >               if (err)
> > -                     goto clk_reg_err;
> > +                     return err;
> >
> >       }
> >
> >       err = devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get,
> >                                         data->onecell_data);
> >       if (err)
> > -             goto clk_reg_err;
> > +             return err;
> >
> >       return 0;
> > -
> > -clk_reg_err:
> > -     pm_clk_destroy(dev);
> > -pm_clk_err:
> > -     pm_runtime_disable(dev);
> > -     return err;
> >  }
> >
> >  static const struct of_device_id lpass_gfm_clk_match_table[] = {
> > diff --git a/drivers/clk/qcom/lpasscorecc-sc7180.c b/drivers/clk/qcom/lpasscorecc-sc7180.c
> > index 2e0ecc38efdd..ac09b7b840ab 100644
> > --- a/drivers/clk/qcom/lpasscorecc-sc7180.c
> > +++ b/drivers/clk/qcom/lpasscorecc-sc7180.c
> > @@ -356,32 +356,18 @@ static const struct qcom_cc_desc lpass_audio_hm_sc7180_desc = {
> >       .num_gdscs = ARRAY_SIZE(lpass_audio_hm_sc7180_gdscs),
> >  };
> >
> > -static void lpass_pm_runtime_disable(void *data)
> > -{
> > -     pm_runtime_disable(data);
> > -}
> > -
> > -static void lpass_pm_clk_destroy(void *data)
> > -{
> > -     pm_clk_destroy(data);
> > -}
> > -
> >  static int lpass_create_pm_clks(struct platform_device *pdev)
> >  {
> >       int ret;
> >
> >       pm_runtime_use_autosuspend(&pdev->dev);
> >       pm_runtime_set_autosuspend_delay(&pdev->dev, 500);
> > -     pm_runtime_enable(&pdev->dev);
> >
> > -     ret = devm_add_action_or_reset(&pdev->dev, lpass_pm_runtime_disable, &pdev->dev);
> > +     ret = devm_pm_runtime_enable(&pdev->dev);
> >       if (ret)
> >               return ret;
> >
> > -     ret = pm_clk_create(&pdev->dev);
> > -     if (ret)
> > -             return ret;
> > -     ret = devm_add_action_or_reset(&pdev->dev, lpass_pm_clk_destroy, &pdev->dev);
> > +     ret = devm_pm_clk_create(&pdev->dev);
> >       if (ret)
> >               return ret;
> >
> > diff --git a/drivers/clk/qcom/mss-sc7180.c b/drivers/clk/qcom/mss-sc7180.c
> > index 673fa1a4f734..5a1407440662 100644
> > --- a/drivers/clk/qcom/mss-sc7180.c
> > +++ b/drivers/clk/qcom/mss-sc7180.c
> > @@ -73,36 +73,23 @@ static int mss_sc7180_probe(struct platform_device *pdev)
> >  {
> >       int ret;
> >
> > -     pm_runtime_enable(&pdev->dev);
> > -     ret = pm_clk_create(&pdev->dev);
> > +     ret = devm_pm_runtime_enable(&pdev->dev);
> >       if (ret)
> > -             goto disable_pm_runtime;
> > +             return ret;
> > +
> > +     ret = devm_pm_clk_create(&pdev->dev);
> > +     if (ret)
> > +             return ret;
> >
> >       ret = pm_clk_add(&pdev->dev, "cfg_ahb");
> >       if (ret < 0) {
> >               dev_err(&pdev->dev, "failed to acquire iface clock\n");
> > -             goto destroy_pm_clk;
> > +             return ret;
> >       }
> >
> >       ret = qcom_cc_probe(pdev, &mss_sc7180_desc);
> >       if (ret < 0)
> > -             goto destroy_pm_clk;
> > -
> > -     return 0;
> > -
> > -destroy_pm_clk:
> > -     pm_clk_destroy(&pdev->dev);
> > -
> > -disable_pm_runtime:
> > -     pm_runtime_disable(&pdev->dev);
> > -
> > -     return ret;
> > -}
> > -
> > -static int mss_sc7180_remove(struct platform_device *pdev)
> > -{
> > -     pm_clk_destroy(&pdev->dev);
> > -     pm_runtime_disable(&pdev->dev);
> > +             return ret;
> >
> >       return 0;
> >  }
> > @@ -119,7 +106,6 @@ MODULE_DEVICE_TABLE(of, mss_sc7180_match_table);
> >
> >  static struct platform_driver mss_sc7180_driver = {
> >       .probe          = mss_sc7180_probe,
> > -     .remove         = mss_sc7180_remove,
> >       .driver         = {
> >               .name           = "sc7180-mss",
> >               .of_match_table = mss_sc7180_match_table,
> > diff --git a/drivers/clk/qcom/q6sstop-qcs404.c b/drivers/clk/qcom/q6sstop-qcs404.c
> > index 723f932fbf7d..507386bee07d 100644
> > --- a/drivers/clk/qcom/q6sstop-qcs404.c
> > +++ b/drivers/clk/qcom/q6sstop-qcs404.c
> > @@ -159,15 +159,18 @@ static int q6sstopcc_qcs404_probe(struct platform_device *pdev)
> >       const struct qcom_cc_desc *desc;
> >       int ret;
> >
> > -     pm_runtime_enable(&pdev->dev);
> > -     ret = pm_clk_create(&pdev->dev);
> > +     ret = devm_pm_runtime_enable(&pdev->dev);
> >       if (ret)
> > -             goto disable_pm_runtime;
> > +             return ret;
> > +
> > +     ret = devm_pm_clk_create(&pdev->dev);
> > +     if (ret)
> > +             return ret;
> >
> >       ret = pm_clk_add(&pdev->dev, NULL);
> >       if (ret < 0) {
> >               dev_err(&pdev->dev, "failed to acquire iface clock\n");
> > -             goto destroy_pm_clk;
> > +             return ret;
> >       }
> >
> >       q6sstop_regmap_config.name = "q6sstop_tcsr";
> > @@ -175,30 +178,14 @@ static int q6sstopcc_qcs404_probe(struct platform_device *pdev)
> >
> >       ret = qcom_cc_probe_by_index(pdev, 1, desc);
> >       if (ret)
> > -             goto destroy_pm_clk;
> > +             return ret;
> >
> >       q6sstop_regmap_config.name = "q6sstop_cc";
> >       desc = &q6sstop_qcs404_desc;
> >
> >       ret = qcom_cc_probe_by_index(pdev, 0, desc);
> >       if (ret)
> > -             goto destroy_pm_clk;
> > -
> > -     return 0;
> > -
> > -destroy_pm_clk:
> > -     pm_clk_destroy(&pdev->dev);
> > -
> > -disable_pm_runtime:
> > -     pm_runtime_disable(&pdev->dev);
> > -
> > -     return ret;
> > -}
> > -
> > -static int q6sstopcc_qcs404_remove(struct platform_device *pdev)
> > -{
> > -     pm_clk_destroy(&pdev->dev);
> > -     pm_runtime_disable(&pdev->dev);
> > +             return ret;
> >
> >       return 0;
> >  }
> > @@ -209,7 +196,6 @@ static const struct dev_pm_ops q6sstopcc_pm_ops = {
> >
> >  static struct platform_driver q6sstopcc_qcs404_driver = {
> >       .probe          = q6sstopcc_qcs404_probe,
> > -     .remove         = q6sstopcc_qcs404_remove,
> >       .driver         = {
> >               .name   = "qcs404-q6sstopcc",
> >               .of_match_table = q6sstopcc_qcs404_match_table,
> > diff --git a/drivers/clk/qcom/turingcc-qcs404.c b/drivers/clk/qcom/turingcc-qcs404.c
> > index 4cfbbf5bf4d9..4543bda793f4 100644
> > --- a/drivers/clk/qcom/turingcc-qcs404.c
> > +++ b/drivers/clk/qcom/turingcc-qcs404.c
> > @@ -110,36 +110,23 @@ static int turingcc_probe(struct platform_device *pdev)
> >  {
> >       int ret;
> >
> > -     pm_runtime_enable(&pdev->dev);
> > -     ret = pm_clk_create(&pdev->dev);
> > +     ret = devm_pm_runtime_enable(&pdev->dev);
> >       if (ret)
> > -             goto disable_pm_runtime;
> > +             return ret;
> > +
> > +     ret = devm_pm_clk_create(&pdev->dev);
> > +     if (ret)
> > +             return ret;
> >
> >       ret = pm_clk_add(&pdev->dev, NULL);
> >       if (ret < 0) {
> >               dev_err(&pdev->dev, "failed to acquire iface clock\n");
> > -             goto destroy_pm_clk;
> > +             return ret;
> >       }
> >
> >       ret = qcom_cc_probe(pdev, &turingcc_desc);
> >       if (ret < 0)
> > -             goto destroy_pm_clk;
> > -
> > -     return 0;
> > -
> > -destroy_pm_clk:
> > -     pm_clk_destroy(&pdev->dev);
> > -
> > -disable_pm_runtime:
> > -     pm_runtime_disable(&pdev->dev);
> > -
> > -     return ret;
> > -}
> > -
> > -static int turingcc_remove(struct platform_device *pdev)
> > -{
> > -     pm_clk_destroy(&pdev->dev);
> > -     pm_runtime_disable(&pdev->dev);
> > +             return ret;
> >
> >       return 0;
> >  }
> > @@ -156,7 +143,6 @@ MODULE_DEVICE_TABLE(of, turingcc_match_table);
> >
> >  static struct platform_driver turingcc_driver = {
> >       .probe          = turingcc_probe,
> > -     .remove         = turingcc_remove,
> >       .driver         = {
> >               .name   = "qcs404-turingcc",
> >               .of_match_table = turingcc_match_table,
> > --
> > 2.30.2
> >



-- 
With best wishes
Dmitry