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36ec3f4372
There are existing uses for a devres version of of_regulator_get_optional() in power domain drivers. On MediaTek platforms, power domains may have regulator supplies tied to them. The driver currently tries to use devm_regulator_get() to not have to manage the lifecycle, but ends up doing it in a very hacky way by replacing the device node of the power domain controller device to the device node of the power domain that is currently being registered, getting the supply, and reverting the device node. Provide a better API so that the hack can be replaced. Signed-off-by: Chen-Yu Tsai <wenst@chromium.org> Link: https://patch.msgid.link/20240925093807.1026949-3-wenst@chromium.org Signed-off-by: Mark Brown <broonie@kernel.org>
139 lines
3.7 KiB
C
139 lines
3.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* internal.h -- Voltage/Current Regulator framework internal code
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*
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* Copyright 2007, 2008 Wolfson Microelectronics PLC.
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* Copyright 2008 SlimLogic Ltd.
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*
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* Author: Liam Girdwood <lrg@slimlogic.co.uk>
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*/
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#ifndef __REGULATOR_INTERNAL_H
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#define __REGULATOR_INTERNAL_H
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#include <linux/suspend.h>
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#define REGULATOR_STATES_NUM (PM_SUSPEND_MAX + 1)
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#define rdev_crit(rdev, fmt, ...) \
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pr_crit("%s: " fmt, rdev_get_name(rdev), ##__VA_ARGS__)
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#define rdev_err(rdev, fmt, ...) \
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pr_err("%s: " fmt, rdev_get_name(rdev), ##__VA_ARGS__)
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#define rdev_warn(rdev, fmt, ...) \
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pr_warn("%s: " fmt, rdev_get_name(rdev), ##__VA_ARGS__)
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#define rdev_info(rdev, fmt, ...) \
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pr_info("%s: " fmt, rdev_get_name(rdev), ##__VA_ARGS__)
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#define rdev_dbg(rdev, fmt, ...) \
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pr_debug("%s: " fmt, rdev_get_name(rdev), ##__VA_ARGS__)
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struct regulator_voltage {
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int min_uV;
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int max_uV;
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};
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/*
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* struct regulator
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*
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* One for each consumer device.
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* @voltage - a voltage array for each state of runtime, i.e.:
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* PM_SUSPEND_ON
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* PM_SUSPEND_TO_IDLE
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* PM_SUSPEND_STANDBY
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* PM_SUSPEND_MEM
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* PM_SUSPEND_MAX
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*/
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struct regulator {
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struct device *dev;
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struct list_head list;
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unsigned int always_on:1;
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unsigned int bypass:1;
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unsigned int device_link:1;
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int uA_load;
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unsigned int enable_count;
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unsigned int deferred_disables;
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struct regulator_voltage voltage[REGULATOR_STATES_NUM];
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const char *supply_name;
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struct device_attribute dev_attr;
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struct regulator_dev *rdev;
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struct dentry *debugfs;
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};
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extern const struct class regulator_class;
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static inline struct regulator_dev *dev_to_rdev(struct device *dev)
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{
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return container_of(dev, struct regulator_dev, dev);
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}
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enum regulator_get_type {
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NORMAL_GET,
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EXCLUSIVE_GET,
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OPTIONAL_GET,
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MAX_GET_TYPE
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};
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#ifdef CONFIG_OF
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struct regulator_dev *of_regulator_dev_lookup(struct device *dev,
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struct device_node *np,
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const char *supply);
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struct regulator_init_data *regulator_of_get_init_data(struct device *dev,
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const struct regulator_desc *desc,
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struct regulator_config *config,
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struct device_node **node);
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struct regulator *_of_regulator_get(struct device *dev, struct device_node *node,
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const char *id, enum regulator_get_type get_type);
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struct regulator_dev *of_parse_coupled_regulator(struct regulator_dev *rdev,
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int index);
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int of_get_n_coupled(struct regulator_dev *rdev);
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bool of_check_coupling_data(struct regulator_dev *rdev);
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#else
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static inline struct regulator_dev *of_regulator_dev_lookup(struct device *dev,
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struct device_node *np,
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const char *supply)
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{
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return ERR_PTR(-ENODEV);
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}
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static inline struct regulator_init_data *
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regulator_of_get_init_data(struct device *dev,
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const struct regulator_desc *desc,
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struct regulator_config *config,
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struct device_node **node)
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{
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return NULL;
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}
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static inline struct regulator_dev *
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of_parse_coupled_regulator(struct regulator_dev *rdev,
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int index)
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{
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return NULL;
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}
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static inline int of_get_n_coupled(struct regulator_dev *rdev)
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{
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return 0;
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}
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static inline bool of_check_coupling_data(struct regulator_dev *rdev)
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{
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return false;
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}
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#endif
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int _regulator_get_common_check(struct device *dev, const char *id,
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enum regulator_get_type get_type);
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struct regulator *_regulator_get_common(struct regulator_dev *rdev, struct device *dev,
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const char *id, enum regulator_get_type get_type);
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struct regulator *_regulator_get(struct device *dev, const char *id,
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enum regulator_get_type get_type);
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int _regulator_bulk_get(struct device *dev, int num_consumers,
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struct regulator_bulk_data *consumers, enum regulator_get_type get_type);
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#endif
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