[PATCH v3 10/10] OPP: Drop redundant _opp_attach|detach_genpd()

@@ -2360,86 +2360,6 @@ static void _opp_put_config_regulators_helper(struct opp_table *opp_table)
 		opp_table->config_regulators = NULL;
 }
 
-static void _opp_detach_genpd(struct opp_table *opp_table)
-{
-	int index;
-
-	for (index = 0; index < opp_table->required_opp_count; index++) {
-		if (!opp_table->required_devs[index])
-			continue;
-
-		dev_pm_domain_detach(opp_table->required_devs[index], false);
-	}
-}
-
-/*
- * Multiple generic power domains for a device are supported with the help of
- * virtual genpd devices, which are created for each consumer device - genpd
- * pair. These are the device structures which are attached to the power domain
- * and are required by the OPP core to set the performance state of the genpd.
- * The same API also works for the case where single genpd is available and so
- * we don't need to support that separately.
- *
- * This helper will normally be called by the consumer driver of the device
- * "dev", as only that has details of the genpd names.
- *
- * This helper needs to be called once with a list of all genpd to attach.
- * Otherwise the original device structure will be used instead by the OPP core.
- *
- * The order of entries in the names array must match the order in which
- * "required-opps" are added in DT.
- */
-static int _opp_attach_genpd(struct opp_table *opp_table, struct device *dev,
-			const char * const *names, struct device ***virt_devs)
-{
-	struct device *virt_dev;
-	int index = 0, ret = -EINVAL;
-	const char * const *name = names;
-
-	if (!opp_table->required_devs) {
-		dev_err(dev, "Required OPPs not available, can't attach genpd\n");
-		return -EINVAL;
-	}
-
-	/* Genpd core takes care of propagation to parent genpd */
-	if (opp_table->is_genpd) {
-		dev_err(dev, "%s: Operation not supported for genpds\n", __func__);
-		return -EOPNOTSUPP;
-	}
-
-	/* Checking only the first one is enough ? */
-	if (opp_table->required_devs[0])
-		return 0;
-
-	while (*name) {
-		if (index >= opp_table->required_opp_count) {
-			dev_err(dev, "Index can't be greater than required-opp-count - 1, %s (%d : %d)\n",
-				*name, opp_table->required_opp_count, index);
-			goto err;
-		}
-
-		virt_dev = dev_pm_domain_attach_by_name(dev, *name);
-		if (IS_ERR_OR_NULL(virt_dev)) {
-			ret = virt_dev ? PTR_ERR(virt_dev) : -ENODEV;
-			dev_err(dev, "Couldn't attach to pm_domain: %d\n", ret);
-			goto err;
-		}
-
-		index++;
-		name++;
-	}
-
-	if (virt_devs)
-		*virt_devs = opp_table->required_devs;
-
-	return 0;
-
-err:
-	_opp_detach_genpd(opp_table);
-	return ret;
-
-}
-
 static int _opp_set_required_dev(struct opp_table *opp_table,
 				 struct device *dev,
 				 struct device *required_dev,

@@ -2516,9 +2436,6 @@ static void _opp_clear_config(struct opp_config_data *data)
 {
 	if (data->flags & OPP_CONFIG_REQUIRED_DEV)
 		_opp_put_required_dev(data->opp_table, data->index);
-	else if (data->flags & OPP_CONFIG_GENPD)
-		_opp_detach_genpd(data->opp_table);
-
 	if (data->flags & OPP_CONFIG_REGULATOR)
 		_opp_put_regulators(data->opp_table);
 	if (data->flags & OPP_CONFIG_SUPPORTED_HW)

@@ -2630,18 +2547,7 @@ int dev_pm_opp_set_config(struct device *dev, struct dev_pm_opp_config *config)
 		data->flags |= OPP_CONFIG_REGULATOR;
 	}
 
-	/* Attach genpds */
-	if (config->genpd_names) {
-		if (config->required_dev)
-			goto err;
-
-		ret = _opp_attach_genpd(opp_table, dev, config->genpd_names,
-					config->virt_devs);
-		if (ret)
-			goto err;
-
-		data->flags |= OPP_CONFIG_GENPD;
-	} else if (config->required_dev && config->required_opp_table) {
+	if (config->required_dev && config->required_opp_table) {
 		ret = _opp_set_required_dev(opp_table, dev,
 					    config->required_dev,
 					    config->required_opp_table);

@@ -34,8 +34,7 @@ extern struct list_head opp_tables;
 #define OPP_CONFIG_REGULATOR_HELPER	BIT(2)
 #define OPP_CONFIG_PROP_NAME		BIT(3)
 #define OPP_CONFIG_SUPPORTED_HW		BIT(4)
-#define OPP_CONFIG_GENPD		BIT(5)
-#define OPP_CONFIG_REQUIRED_DEV		BIT(6)
+#define OPP_CONFIG_REQUIRED_DEV		BIT(5)
 
 /**
  * struct opp_config_data - data for set config operations

@@ -62,11 +62,7 @@ typedef int (*config_clks_t)(struct device *dev, struct opp_table *opp_table,
  * @supported_hw: Array of hierarchy of versions to match.
  * @supported_hw_count: Number of elements in the array.
  * @regulator_names: Array of pointers to the names of the regulator, NULL terminated.
- * @genpd_names: Null terminated array of pointers containing names of genpd to
- *		attach. Mutually exclusive with required_dev.
- * @virt_devs: Pointer to return the array of genpd virtual devices. Mutually
- *		exclusive with required_dev.
- * @required_dev: Required OPP device. Mutually exclusive with genpd_names/virt_devs.
+ * @required_dev: Required OPP device.
  * @required_opp_table: The corresponding required OPP table for @required_dev.
  *
  * This structure contains platform specific OPP configurations for the device.

@@ -80,8 +76,6 @@ struct dev_pm_opp_config {
 	const unsigned int *supported_hw;
 	unsigned int supported_hw_count;
 	const char * const *regulator_names;
-	const char * const *genpd_names;
-	struct device ***virt_devs;
 	struct device *required_dev;
 	struct opp_table *required_opp_table;
 };

@@ -677,36 +671,6 @@ static inline void dev_pm_opp_put_config_regulators(int token)
 	dev_pm_opp_clear_config(token);
 }
 
-/* genpd helpers */
-static inline int dev_pm_opp_attach_genpd(struct device *dev,
-					  const char * const *names,
-					  struct device ***virt_devs)
-{
-	struct dev_pm_opp_config config = {
-		.genpd_names = names,
-		.virt_devs = virt_devs,
-	};
-
-	return dev_pm_opp_set_config(dev, &config);
-}
-
-static inline void dev_pm_opp_detach_genpd(int token)
-{
-	dev_pm_opp_clear_config(token);
-}
-
-static inline int devm_pm_opp_attach_genpd(struct device *dev,
-					   const char * const *names,
-					   struct device ***virt_devs)
-{
-	struct dev_pm_opp_config config = {
-		.genpd_names = names,
-		.virt_devs = virt_devs,
-	};
-
-	return devm_pm_opp_set_config(dev, &config);
-}
-
 /* prop-name helpers */
 static inline int dev_pm_opp_set_prop_name(struct device *dev, const char *name)
 {