diff options
Diffstat (limited to 'drivers/regulator')
| -rw-r--r-- | drivers/regulator/Kconfig | 24 | ||||
| -rw-r--r-- | drivers/regulator/Makefile | 3 | ||||
| -rw-r--r-- | drivers/regulator/bq24022.c | 21 | ||||
| -rw-r--r-- | drivers/regulator/core.c | 508 | ||||
| -rw-r--r-- | drivers/regulator/da903x.c | 513 | ||||
| -rw-r--r-- | drivers/regulator/wm8350-regulator.c | 1431 | ||||
| -rw-r--r-- | drivers/regulator/wm8400-regulator.c | 368 |
7 files changed, 2625 insertions, 243 deletions
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index a656128f1fd..4dada6ee111 100644 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig @@ -56,4 +56,28 @@ config REGULATOR_BQ24022 charging select between 100 mA and 500 mA charging current limit. +config REGULATOR_WM8350 + tristate "Wolfson Microelectroncis WM8350 AudioPlus PMIC" + depends on MFD_WM8350 + select REGULATOR + help + This driver provides support for the voltage and current regulators + of the WM8350 AudioPlus PMIC. + +config REGULATOR_WM8400 + tristate "Wolfson Microelectroncis WM8400 AudioPlus PMIC" + depends on MFD_WM8400 + select REGULATOR + help + This driver provides support for the voltage regulators of the + WM8400 AudioPlus PMIC. + +config REGULATOR_DA903X + tristate "Support regulators on Dialog Semiconductor DA9030/DA9034 PMIC" + depends on PMIC_DA903X + select REGULATOR + help + Say y here to support the BUCKs and LDOs regulators found on + Dialog Semiconductor DA9030/DA9034 PMIC. + endmenu diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile index ac2c64efe65..254d40c02ee 100644 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile @@ -8,5 +8,8 @@ obj-$(CONFIG_REGULATOR_FIXED_VOLTAGE) += fixed.o obj-$(CONFIG_REGULATOR_VIRTUAL_CONSUMER) += virtual.o obj-$(CONFIG_REGULATOR_BQ24022) += bq24022.o +obj-$(CONFIG_REGULATOR_WM8350) += wm8350-regulator.o +obj-$(CONFIG_REGULATOR_WM8400) += wm8400-regulator.o +obj-$(CONFIG_REGULATOR_DA903X) += da903x.o ccflags-$(CONFIG_REGULATOR_DEBUG) += -DDEBUG diff --git a/drivers/regulator/bq24022.c b/drivers/regulator/bq24022.c index 263699d6152..366565aba86 100644 --- a/drivers/regulator/bq24022.c +++ b/drivers/regulator/bq24022.c @@ -18,13 +18,13 @@ #include <linux/regulator/bq24022.h> #include <linux/regulator/driver.h> + static int bq24022_set_current_limit(struct regulator_dev *rdev, int min_uA, int max_uA) { - struct platform_device *pdev = rdev_get_drvdata(rdev); - struct bq24022_mach_info *pdata = pdev->dev.platform_data; + struct bq24022_mach_info *pdata = rdev_get_drvdata(rdev); - dev_dbg(&pdev->dev, "setting current limit to %s mA\n", + dev_dbg(rdev_get_dev(rdev), "setting current limit to %s mA\n", max_uA >= 500000 ? "500" : "100"); /* REVISIT: maybe return error if min_uA != 0 ? */ @@ -34,18 +34,16 @@ static int bq24022_set_current_limit(struct regulator_dev *rdev, static int bq24022_get_current_limit(struct regulator_dev *rdev) { - struct platform_device *pdev = rdev_get_drvdata(rdev); - struct bq24022_mach_info *pdata = pdev->dev.platform_data; + struct bq24022_mach_info *pdata = rdev_get_drvdata(rdev); return gpio_get_value(pdata->gpio_iset2) ? 500000 : 100000; } static int bq24022_enable(struct regulator_dev *rdev) { - struct platform_device *pdev = rdev_get_drvdata(rdev); - struct bq24022_mach_info *pdata = pdev->dev.platform_data; + struct bq24022_mach_info *pdata = rdev_get_drvdata(rdev); - dev_dbg(&pdev->dev, "enabling charger\n"); + dev_dbg(rdev_get_dev(rdev), "enabling charger\n"); gpio_set_value(pdata->gpio_nce, 0); return 0; @@ -53,10 +51,9 @@ static int bq24022_enable(struct regulator_dev *rdev) static int bq24022_disable(struct regulator_dev *rdev) { - struct platform_device *pdev = rdev_get_drvdata(rdev); - struct bq24022_mach_info *pdata = pdev->dev.platform_data; + struct bq24022_mach_info *pdata = rdev_get_drvdata(rdev); - dev_dbg(&pdev->dev, "disabling charger\n"); + dev_dbg(rdev_get_dev(rdev), "disabling charger\n"); gpio_set_value(pdata->gpio_nce, 1); return 0; @@ -108,7 +105,7 @@ static int __init bq24022_probe(struct platform_device *pdev) ret = gpio_direction_output(pdata->gpio_iset2, 0); ret = gpio_direction_output(pdata->gpio_nce, 1); - bq24022 = regulator_register(&bq24022_desc, pdev); + bq24022 = regulator_register(&bq24022_desc, &pdev->dev, pdata); if (IS_ERR(bq24022)) { dev_dbg(&pdev->dev, "couldn't register regulator\n"); ret = PTR_ERR(bq24022); diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 9c798626156..02a774424e8 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -2,8 +2,9 @@ * core.c -- Voltage/Current Regulator framework. * * Copyright 2007, 2008 Wolfson Microelectronics PLC. + * Copyright 2008 SlimLogic Ltd. * - * Author: Liam Girdwood <liam.girdwood@wolfsonmicro.com> + * Author: Liam Girdwood <lrg@slimlogic.co.uk> * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the @@ -64,14 +65,9 @@ struct regulator_map { struct list_head list; struct device *dev; const char *supply; - const char *regulator; + struct regulator_dev *regulator; }; -static inline struct regulator_dev *to_rdev(struct device *d) -{ - return container_of(d, struct regulator_dev, dev); -} - /* * struct regulator * @@ -227,7 +223,7 @@ static ssize_t device_requested_uA_show(struct device *dev, static ssize_t regulator_uV_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct regulator_dev *rdev = to_rdev(dev); + struct regulator_dev *rdev = dev_get_drvdata(dev); ssize_t ret; mutex_lock(&rdev->mutex); @@ -240,15 +236,31 @@ static ssize_t regulator_uV_show(struct device *dev, static ssize_t regulator_uA_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct regulator_dev *rdev = to_rdev(dev); + struct regulator_dev *rdev = dev_get_drvdata(dev); return sprintf(buf, "%d\n", _regulator_get_current_limit(rdev)); } +static ssize_t regulator_name_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct regulator_dev *rdev = dev_get_drvdata(dev); + const char *name; + + if (rdev->constraints->name) + name = rdev->constraints->name; + else if (rdev->desc->name) + name = rdev->desc->name; + else + name = ""; + + return sprintf(buf, "%s\n", name); +} + static ssize_t regulator_opmode_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct regulator_dev *rdev = to_rdev(dev); + struct regulator_dev *rdev = dev_get_drvdata(dev); int mode = _regulator_get_mode(rdev); switch (mode) { @@ -267,7 +279,7 @@ static ssize_t regulator_opmode_show(struct device *dev, static ssize_t regulator_state_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct regulator_dev *rdev = to_rdev(dev); + struct regulator_dev *rdev = dev_get_drvdata(dev); int state = _regulator_is_enabled(rdev); if (state > 0) @@ -281,7 +293,7 @@ static ssize_t regulator_state_show(struct device *dev, static ssize_t regulator_min_uA_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct regulator_dev *rdev = to_rdev(dev); + struct regulator_dev *rdev = dev_get_drvdata(dev); if (!rdev->constraints) return sprintf(buf, "constraint not defined\n"); @@ -292,7 +304,7 @@ static ssize_t regulator_min_uA_show(struct device *dev, static ssize_t regulator_max_uA_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct regulator_dev *rdev = to_rdev(dev); + struct regulator_dev *rdev = dev_get_drvdata(dev); if (!rdev->constraints) return sprintf(buf, "constraint not defined\n"); @@ -303,7 +315,7 @@ static ssize_t regulator_max_uA_show(struct device *dev, static ssize_t regulator_min_uV_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct regulator_dev *rdev = to_rdev(dev); + struct regulator_dev *rdev = dev_get_drvdata(dev); if (!rdev->constraints) return sprintf(buf, "constraint not defined\n"); @@ -314,7 +326,7 @@ static ssize_t regulator_min_uV_show(struct device *dev, static ssize_t regulator_max_uV_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct regulator_dev *rdev = to_rdev(dev); + struct regulator_dev *rdev = dev_get_drvdata(dev); if (!rdev->constraints) return sprintf(buf, "constraint not defined\n"); @@ -325,7 +337,7 @@ static ssize_t regulator_max_uV_show(struct device *dev, static ssize_t regulator_total_uA_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct regulator_dev *rdev = to_rdev(dev); + struct regulator_dev *rdev = dev_get_drvdata(dev); struct regulator *regulator; int uA = 0; @@ -339,14 +351,14 @@ static ssize_t regulator_total_uA_show(struct device *dev, static ssize_t regulator_num_users_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct regulator_dev *rdev = to_rdev(dev); + struct regulator_dev *rdev = dev_get_drvdata(dev); return sprintf(buf, "%d\n", rdev->use_count); } static ssize_t regulator_type_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct regulator_dev *rdev = to_rdev(dev); + struct regulator_dev *rdev = dev_get_drvdata(dev); switch (rdev->desc->type) { case REGULATOR_VOLTAGE: @@ -360,7 +372,7 @@ static ssize_t regulator_type_show(struct device *dev, static ssize_t regulator_suspend_mem_uV_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct regulator_dev *rdev = to_rdev(dev); + struct regulator_dev *rdev = dev_get_drvdata(dev); if (!rdev->constraints) return sprintf(buf, "not defined\n"); @@ -370,7 +382,7 @@ static ssize_t regulator_suspend_mem_uV_show(struct device *dev, static ssize_t regulator_suspend_disk_uV_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct regulator_dev *rdev = to_rdev(dev); + struct regulator_dev *rdev = dev_get_drvdata(dev); if (!rdev->constraints) return sprintf(buf, "not defined\n"); @@ -380,7 +392,7 @@ static ssize_t regulator_suspend_disk_uV_show(struct device *dev, static ssize_t regulator_suspend_standby_uV_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct regulator_dev *rdev = to_rdev(dev); + struct regulator_dev *rdev = dev_get_drvdata(dev); if (!rdev->constraints) return sprintf(buf, "not defined\n"); @@ -406,7 +418,7 @@ static ssize_t suspend_opmode_show(struct regulator_dev *rdev, static ssize_t regulator_suspend_mem_mode_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct regulator_dev *rdev = to_rdev(dev); + struct regulator_dev *rdev = dev_get_drvdata(dev); if (!rdev->constraints) return sprintf(buf, "not defined\n"); @@ -417,7 +429,7 @@ static ssize_t regulator_suspend_mem_mode_show(struct device *dev, static ssize_t regulator_suspend_disk_mode_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct regulator_dev *rdev = to_rdev(dev); + struct regulator_dev *rdev = dev_get_drvdata(dev); if (!rdev->constraints) return sprintf(buf, "not defined\n"); @@ -428,7 +440,7 @@ static ssize_t regulator_suspend_disk_mode_show(struct device *dev, static ssize_t regulator_suspend_standby_mode_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct regulator_dev *rdev = to_rdev(dev); + struct regulator_dev *rdev = dev_get_drvdata(dev); if (!rdev->constraints) return sprintf(buf, "not defined\n"); @@ -439,7 +451,7 @@ static ssize_t regulator_suspend_standby_mode_show(struct device *dev, static ssize_t regulator_suspend_mem_state_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct regulator_dev *rdev = to_rdev(dev); + struct regulator_dev *rdev = dev_get_drvdata(dev); if (!rdev->constraints) return sprintf(buf, "not defined\n"); @@ -453,7 +465,7 @@ static ssize_t regulator_suspend_mem_state_show(struct device *dev, static ssize_t regulator_suspend_disk_state_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct regulator_dev *rdev = to_rdev(dev); + struct regulator_dev *rdev = dev_get_drvdata(dev); if (!rdev->constraints) return sprintf(buf, "not defined\n"); @@ -467,7 +479,7 @@ static ssize_t regulator_suspend_disk_state_show(struct device *dev, static ssize_t regulator_suspend_standby_state_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct regulator_dev *rdev = to_rdev(dev); + struct regulator_dev *rdev = dev_get_drvdata(dev); if (!rdev->constraints) return sprintf(buf, "not defined\n"); @@ -477,7 +489,9 @@ static ssize_t regulator_suspend_standby_state_show(struct device *dev, else return sprintf(buf, "disabled\n"); } + static struct device_attribute regulator_dev_attrs[] = { + __ATTR(name, 0444, regulator_name_show, NULL), __ATTR(microvolts, 0444, regulator_uV_show, NULL), __ATTR(microamps, 0444, regulator_uA_show, NULL), __ATTR(opmode, 0444, regulator_opmode_show, NULL), @@ -512,7 +526,7 @@ static struct device_attribute regulator_dev_attrs[] = { static void regulator_dev_release(struct device *dev) { - struct regulator_dev *rdev = to_rdev(dev); + struct regulator_dev *rdev = dev_get_drvdata(dev); kfree(rdev); } @@ -569,8 +583,11 @@ static int suspend_set_state(struct regulator_dev *rdev, /* enable & disable are mandatory for suspend control */ if (!rdev->desc->ops->set_suspend_enable || - !rdev->desc->ops->set_suspend_disable) + !rdev->desc->ops->set_suspend_disable) { + printk(KERN_ERR "%s: no way to set suspend state\n", + __func__); return -EINVAL; + } if (rstate->enabled) ret = rdev->desc->ops->set_suspend_enable(rdev); @@ -656,6 +673,155 @@ static void print_constraints(struct regulator_dev *rdev) printk(KERN_INFO "regulator: %s: %s\n", rdev->desc->name, buf); } +/** + * set_machine_constraints - sets regulator constraints + * @regulator: regulator source + * + * Allows platform initialisation code to define and constrain + * regulator circuits e.g. valid voltage/current ranges, etc. NOTE: + * Constraints *must* be set by platform code in order for some + * regulator operations to proceed i.e. set_voltage, set_current_limit, + * set_mode. + */ +static int set_machine_constraints(struct regulator_dev *rdev, + struct regulation_constraints *constraints) +{ + int ret = 0; + const char *name; + struct regulator_ops *ops = rdev->desc->ops; + + if (constraints->name) + name = constraints->name; + else if (rdev->desc->name) + name = rdev->desc->name; + else + name = "regulator"; + + rdev->constraints = constraints; + + /* do we need to apply the constraint voltage */ + if (rdev->constraints->apply_uV && + rdev->constraints->min_uV == rdev->constraints->max_uV && + ops->set_voltage) { + ret = ops->set_voltage(rdev, + rdev->constraints->min_uV, rdev->constraints->max_uV); + if (ret < 0) { + printk(KERN_ERR "%s: failed to apply %duV constraint to %s\n", + __func__, + rdev->constraints->min_uV, name); + rdev->constraints = NULL; + goto out; + } + } + + /* are we enabled at boot time by firmware / bootloader */ + if (rdev->constraints->boot_on) + rdev->use_count = 1; + + /* do we need to setup our suspend state */ + if (constraints->initial_state) { + ret = suspend_prepare(rdev, constraints->initial_state); + if (ret < 0) { + printk(KERN_ERR "%s: failed to set suspend state for %s\n", + __func__, name); + rdev->constraints = NULL; + goto out; + } + } + + /* if always_on is set then turn the regulator on if it's not + * already on. */ + if (constraints->always_on && ops->enable && + ((ops->is_enabled && !ops->is_enabled(rdev)) || + (!ops->is_enabled && !constraints->boot_on))) { + ret = ops->enable(rdev); + if (ret < 0) { + printk(KERN_ERR "%s: failed to enable %s\n", + __func__, name); + rdev->constraints = NULL; + goto out; + } + } + + print_constraints(rdev); +out: + return ret; +} + +/** + * set_supply - set regulator supply regulator + * @regulator: regulator name + * @supply: supply regulator name + * + * Called by platform initialisation code to set the supply regulator for this + * regulator. This ensures that a regulators supply will also be enabled by the + * core if it's child is enabled. + */ +static int set_supply(struct regulator_dev *rdev, + struct regulator_dev *supply_rdev) +{ + int err; + + err = sysfs_create_link(&rdev->dev.kobj, &supply_rdev->dev.kobj, + "supply"); + if (err) { + printk(KERN_ERR + "%s: could not add device link %s err %d\n", + __func__, supply_rdev->dev.kobj.name, err); + goto out; + } + rdev->supply = supply_rdev; + list_add(&rdev->slist, &supply_rdev->supply_list); +out: + return err; +} + +/** + * set_consumer_device_supply: Bind a regulator to a symbolic supply + * @regulator: regulator source + * @dev: device the supply applies to + * @supply: symbolic name for supply + * + * Allows platform initialisation code to map physical regulator + * sources to symbolic names for supplies for use by devices. Devices + * should use these symbolic names to request regulators, avoiding the + * need to provide board-specific regulator names as platform data. + */ +static int set_consumer_device_supply(struct regulator_dev *rdev, + struct device *consumer_dev, const char *supply) +{ + struct regulator_map *node; + + if (supply == NULL) + return -EINVAL; + + node = kmalloc(sizeof(struct regulator_map), GFP_KERNEL); + if (node == NULL) + return -ENOMEM; + + node->regulator = rdev; + node->dev = consumer_dev; + node->supply = supply; + + list_add(&node->list, ®ulator_map_list); + return 0; +} + +static void unset_consumer_device_supply(struct regulator_dev *rdev, + struct device *consumer_dev) +{ + struct regulator_map *node, *n; + + list_for_each_entry_safe(node, n, ®ulator_map_list, list) { + if (rdev == node->regulator && + consumer_dev == node->dev) { + list_del(&node->list); + kfree(node); + return; + } + } +} + #define REG_STR_SIZE 32 static struct regulator *create_regulator(struct regulator_dev *rdev, @@ -746,7 +912,6 @@ struct regulator *regulator_get(struct device *dev, const char *id) struct regulator_dev *rdev; struct regulator_map *map; struct regulator *regulator = ERR_PTR(-ENODEV); - const char *supply = id; if (id == NULL) { printk(KERN_ERR "regulator: get() with no identifier\n"); @@ -758,15 +923,9 @@ struct regulator *regulator_get(struct device *dev, const char *id) list_for_each_entry(map, ®ulator_map_list, list) { if (dev == map->dev && strcmp(map->supply, id) == 0) { - supply = map->regulator; - break; - } - } - - list_for_each_entry(rdev, ®ulator_list, list) { - if (strcmp(supply, rdev->desc->name) == 0 && - try_module_get(rdev->owner)) + rdev = map->regulator; goto found; + } } printk(KERN_ERR "regulator: Unable to get requested regulator: %s\n", id); @@ -774,12 +933,16 @@ struct regulator *regulator_get(struct device *dev, const char *id) return regulator; found: + if (!try_module_get(rdev->owner)) + goto out; + regulator = create_regulator(rdev, dev, id); if (regulator == NULL) { regulator = ERR_PTR(-ENOMEM); module_put(rdev->owner); } +out: mutex_unlock(®ulator_list_mutex); return regulator; } @@ -1559,11 +1722,12 @@ EXPORT_SYMBOL_GPL(regulator_notifier_call_chain); * Returns 0 on success. */ struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc, - void *reg_data) + struct device *dev, void *driver_data) { static atomic_t regulator_no = ATOMIC_INIT(0); struct regulator_dev *rdev; - int ret; + struct regulator_init_data *init_data = dev->platform_data; + int ret, i; if (regulator_desc == NULL) return ERR_PTR(-EINVAL); @@ -1575,6 +1739,9 @@ struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc, !regulator_desc->type == REGULATOR_CURRENT) return ERR_PTR(-EINVAL); + if (!init_data) + return ERR_PTR(-EINVAL); + rdev = kzalloc(sizeof(struct regulator_dev), GFP_KERNEL); if (rdev == NULL) return ERR_PTR(-ENOMEM); @@ -1582,7 +1749,7 @@ struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc, mutex_lock(®ulator_list_mutex); mutex_init(&rdev->mutex); - rdev->reg_data = reg_data; + rdev->reg_data = driver_data; rdev->owner = regulator_desc->owner; rdev->desc = regulator_desc; INIT_LIST_HEAD(&rdev->consumer_list); @@ -1591,20 +1758,68 @@ struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc, INIT_LIST_HEAD(&rdev->slist); BLOCKING_INIT_NOTIFIER_HEAD(&rdev->notifier); + /* preform any regulator specific init */ + if (init_data->regulator_init) { + ret = init_data->regulator_init(rdev->reg_data); + if (ret < 0) { + kfree(rdev); + rdev = ERR_PTR(ret); + goto out; + } + } + + /* set regulator constraints */ + ret = set_machine_constraints(rdev, &init_data->constraints); + if (ret < 0) { + kfree(rdev); + rdev = ERR_PTR(ret); + goto out; + } + + /* register with sysfs */ rdev->dev.class = ®ulator_class; - device_initialize(&rdev->dev); + rdev->dev.parent = dev; snprintf(rdev->dev.bus_id, sizeof(rdev->dev.bus_id), - "regulator_%ld_%s", - (unsigned long)atomic_inc_return(®ulator_no) - 1, - regulator_desc->name); - - ret = device_add(&rdev->dev); - if (ret == 0) - list_add(&rdev->list, ®ulator_list); - else { + "regulator.%d", atomic_inc_return(®ulator_no) - 1); + ret = device_register(&rdev->dev); + if (ret != 0) { kfree(rdev); rdev = ERR_PTR(ret); + goto out; + } + + dev_set_drvdata(&rdev->dev, rdev); + + /* set supply regulator if it exists */ + if (init_data->supply_regulator_dev) { + ret = set_supply(rdev, + dev_get_drvdata(init_data->supply_regulator_dev)); + if (ret < 0) { + device_unregister(&rdev->dev); + kfree(rdev); + rdev = ERR_PTR(ret); + goto out; + } } + + /* add consumers devices */ + for (i = 0; i < init_data->num_consumer_supplies; i++) { + ret = set_consumer_device_supply(rdev, + init_data->consumer_supplies[i].dev, + init_data->consumer_supplies[i].supply); + if (ret < 0) { + for (--i; i >= 0; i--) + unset_consumer_device_supply(rdev, + init_data->consumer_supplies[i].dev); + device_unregister(&rdev->dev); + kfree(rdev); + rdev = ERR_PTR(ret); + goto out; + } + } + + list_add(&rdev->list, ®ulator_list); +out: mutex_unlock(®ulator_list_mutex); return rdev; } @@ -1631,187 +1846,6 @@ void regulator_unregister(struct regulator_dev *rdev) EXPORT_SYMBOL_GPL(regulator_unregister); /** - * regulator_set_supply - set regulator supply regulator - * @regulator: regulator name - * @supply: supply regulator name - * - * Called by platform initialisation code to set the supply regulator for this - * regulator. This ensures that a regulators supply will also be enabled by the - * core if it's child is enabled. - */ -int regulator_set_supply(const char *regulator, const char *supply) -{ - struct regulator_dev *rdev, *supply_rdev; - int err; - - if (regulator == NULL || supply == NULL) - return -EINVAL; - - mutex_lock(®ulator_list_mutex); - - list_for_each_entry(rdev, ®ulator_list, list) { - if (!strcmp(rdev->desc->name, regulator)) - goto found_regulator; - } - mutex_unlock(®ulator_list_mutex); - return -ENODEV; - -found_regulator: - list_for_each_entry(supply_rdev, ®ulator_list, list) { - if (!strcmp(supply_rdev->desc->name, supply)) - goto found_supply; - } - mutex_unlock(®ulator_list_mutex); - return -ENODEV; - -found_supply: - err = sysfs_create_link(&rdev->dev.kobj, &supply_rdev->dev.kobj, - "supply"); - if (err) { - printk(KERN_ERR - "%s: could not add device link %s err %d\n", - __func__, supply_rdev->dev.kobj.name, err); - goto out; - } - rdev->supply = supply_rdev; - list_add(&rdev->slist, &supply_rdev->supply_list); -out: - mutex_unlock(®ulator_list_mutex); - return err; -} -EXPORT_SYMBOL_GPL(regulator_set_supply); - -/** - * regulator_get_supply - get regulator supply regulator - * @regulator: regulator name - * - * Returns the supply supply regulator name or NULL if no supply regulator - * exists (i.e the regulator is supplied directly from USB, Line, Battery, etc) - */ -const char *regulator_get_supply(const char *regulator) -{ - struct regulator_dev *rdev; - - if (regulator == NULL) - return NULL; - - mutex_lock(®ulator_list_mutex); - list_for_each_entry(rdev, ®ulator_list, list) { - if (!strcmp(rdev->desc->name, regulator)) - goto found; - } - mutex_unlock(®ulator_list_mutex); - return NULL; - -found: - mutex_unlock(®ulator_list_mutex); - if (rdev->supply) - return rdev->supply->desc->name; - else - return NULL; -} -EXPORT_SYMBOL_GPL(regulator_get_supply); - -/** - * regulator_set_machine_constraints - sets regulator constraints - * @regulator: regulator source - * - * Allows platform initialisation code to define and constrain - * regulator circuits e.g. valid voltage/current ranges, etc. NOTE: - * Constraints *must* be set by platform code in order for some - * regulator operations to proceed i.e. set_voltage, set_current_limit, - * set_mode. - */ -int regulator_set_machine_constraints(const char *regulator_name, - struct regulation_constraints *constraints) -{ - struct regulator_dev *rdev; - int ret = 0; - - if (regulator_name == NULL) - return -EINVAL; - - mutex_lock(®ulator_list_mutex); - - list_for_each_entry(rdev, ®ulator_list, list) { - if (!strcmp(regulator_name, rdev->desc->name)) - goto found; - } - ret = -ENODEV; - goto out; - -found: - mutex_lock(&rdev->mutex); - rdev->constraints = constraints; - - /* do we need to apply the constraint voltage */ - if (rdev->constraints->apply_uV && - rdev->constraints->min_uV == rdev->constraints->max_uV && - rdev->desc->ops->set_voltage) { - ret = rdev->desc->ops->set_voltage(rdev, - rdev->constraints->min_uV, rdev->constraints->max_uV); - if (ret < 0) { - printk(KERN_ERR "%s: failed to apply %duV" - " constraint\n", __func__, - rdev->constraints->min_uV); - rdev->constraints = NULL; - goto out; - } - } - - /* are we enabled at boot time by firmware / bootloader */ - if (rdev->constraints->boot_on) - rdev->use_count = 1; - - /* do we need to setup our suspend state */ - if (constraints->initial_state) - ret = suspend_prepare(rdev, constraints->initial_state); - - print_constraints(rdev); - mutex_unlock(&rdev->mutex); - -out: - mutex_unlock(®ulator_list_mutex); - return ret; -} -EXPORT_SYMBOL_GPL(regulator_set_machine_constraints); - - -/** - * regulator_set_device_supply: Bind a regulator to a symbolic supply - * @regulator: regulator source - * @dev: device the supply applies to - * @supply: symbolic name for supply - * - * Allows platform initialisation code to map physical regulator - * sources to symbolic names for supplies for use by devices. Devices - * should use these symbolic names to request regulators, avoiding the - * need to provide board-specific regulator names as platform data. - */ -int regulator_set_device_supply(const char *regulator, struct device *dev, - const char *supply) -{ - struct regulator_map *node; - - if (regulator == NULL || supply == NULL) - return -EINVAL; - - node = kmalloc(sizeof(struct regulator_map), GFP_KERNEL); - if (node == NULL) - return -ENOMEM; - - node->regulator = regulator; - node->dev = dev; - node->supply = supply; - - mutex_lock(®ulator_list_mutex); - list_add(&node->list, ®ulator_map_list); - mutex_unlock(®ulator_list_mutex); - return 0; -} -EXPORT_SYMBOL_GPL(regulator_set_device_supply); - -/** * regulator_suspend_prepare: prepare regulators for system wide suspend * @state: system suspend state * @@ -1893,6 +1927,18 @@ int rdev_get_id(struct regulator_dev *rdev) } EXPORT_SYMBOL_GPL(rdev_get_id); +struct device *rdev_get_dev(struct regulator_dev *rdev) +{ + return &rdev->dev; +} +EXPORT_SYMBOL_GPL(rdev_get_dev); + +void *regulator_get_init_drvdata(struct regulator_init_data *reg_init_data) +{ + return reg_init_data->driver_data; +} +EXPORT_SYMBOL_GPL(regulator_get_init_drvdata); + static int __init regulator_init(void) { printk(KERN_INFO "regulator: core version %s\n", REGULATOR_VERSION); diff --git a/drivers/regulator/da903x.c b/drivers/regulator/da903x.c new file mode 100644 index 00000000000..3688e339db8 --- /dev/null +++ b/drivers/regulator/da903x.c @@ -0,0 +1,513 @@ +/* + * Regulators driver for Dialog Semiconductor DA903x + * + * Copyright (C) 2006-2008 Marvell International Ltd. + * Copyright (C) 2008 Compulab Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/err.h> +#include <linux/platform_device.h> +#include <linux/regulator/driver.h> +#include <linux/regulator/machine.h> +#include <linux/mfd/da903x.h> + +/* DA9030 Registers */ +#define DA9030_INVAL (-1) +#define DA9030_LDO1011 (0x10) +#define DA9030_LDO15 (0x11) +#define DA9030_LDO1416 (0x12) +#define DA9030_LDO1819 (0x13) +#define DA9030_LDO17 (0x14) +#define DA9030_BUCK2DVM1 (0x15) +#define DA9030_BUCK2DVM2 (0x16) +#define DA9030_RCTL11 (0x17) +#define DA9030_RCTL21 (0x18) +#define DA9030_LDO1 (0x90) +#define DA9030_LDO23 (0x91) +#define DA9030_LDO45 (0x92) +#define DA9030_LDO6 (0x93) +#define DA9030_LDO78 (0x94) +#define DA9030_LDO912 (0x95) +#define DA9030_BUCK (0x96) +#define DA9030_RCTL12 (0x97) +#define DA9030_RCTL22 (0x98) +#define DA9030_LDO_UNLOCK (0xa0) +#define DA9030_LDO_UNLOCK_MASK (0xe0) +#define DA9034_OVER1 (0x10) + +/* DA9034 Registers */ +#define DA9034_INVAL (-1) +#define DA9034_OVER2 (0x11) +#define DA9034_OVER3 (0x12) +#define DA9034_LDO643 (0x13) +#define DA9034_LDO987 (0x14) +#define DA9034_LDO1110 (0x15) +#define DA9034_LDO1312 (0x16) +#define DA9034_LDO1514 (0x17) +#define DA9034_VCC1 (0x20) +#define DA9034_ADTV1 (0x23) +#define DA9034_ADTV2 (0x24) +#define DA9034_AVRC (0x25) +#define DA9034_CDTV1 (0x26) +#define DA9034_CDTV2 (0x27) +#define DA9034_CVRC (0x28) +#define DA9034_SDTV1 (0x29) +#define DA9034_SDTV2 (0x2a) +#define DA9034_SVRC (0x2b) +#define DA9034_MDTV1 (0x32) +#define DA9034_MDTV2 (0x33) +#define DA9034_MVRC (0x34) + +struct da903x_regulator_info { + struct regulator_desc desc; + + int min_uV; + int max_uV; + int step_uV; + int vol_reg; + int vol_shift; + int vol_nbits; + int update_reg; + int update_bit; + int enable_reg; + int enable_bit; +}; + +static inline int check_range(struct da903x_regulator_info *info, + int min_uV, int max_uV) +{ + if (min_uV < info->min_uV || min_uV > info->max_uV) + return -EINVAL; + + return 0; +} + +/* DA9030/DA9034 common operations */ +static int da903x_set_ldo_voltage(struct regulator_dev *rdev, + int min_uV, int max_uV) +{ + struct da903x_regulator_info *info = rdev_get_drvdata(rdev); + struct device *da9034_dev = rdev_get_dev(rdev)->parent; + uint8_t val, mask; + + if (check_range(info, min_uV, max_uV)) { + pr_err("invalid voltage range (%d, %d) uV", min_uV, max_uV); + return -EINVAL; + } + + val = (min_uV - info->min_uV + info->step_uV - 1) / info->step_uV; + val <<= info->vol_shift; + mask = ((1 << info->vol_nbits) - 1) << info->vol_shift; + + return da903x_update(da9034_dev, info->vol_reg, val, mask); +} + +static int da903x_get_voltage(struct regulator_dev *rdev) +{ + struct da903x_regulator_info *info = rdev_get_drvdata(rdev); + struct device *da9034_dev = rdev_get_dev(rdev)->parent; + uint8_t val, mask; + int ret; + + ret = da903x_read(da9034_dev, info->vol_reg, &val); + if (ret) + return ret; + + mask = ((1 << info->vol_nbits) - 1) << info->vol_shift; + val = (val & mask) >> info->vol_shift; + + return info->min_uV + info->step_uV * val; +} + +static int da903x_enable(struct regulator_dev *rdev) +{ + struct da903x_regulator_info *info = rdev_get_drvdata(rdev); + struct device *da9034_dev = rdev_get_dev(rdev)->parent; + + return da903x_set_bits(da9034_dev, info->enable_reg, + 1 << info->enable_bit); +} + +static int da903x_disable(struct regulator_dev *rdev) +{ + struct da903x_regulator_info *info = rdev_get_drvdata(rdev); + struct device *da9034_dev = rdev_get_dev(rdev)->parent; + + return da903x_clr_bits(da9034_dev, info->enable_reg, + 1 << info->enable_bit); +} + +static int da903x_is_enabled(struct regulator_dev *rdev) +{ + struct da903x_regulator_info *info = rdev_get_drvdata(rdev); + struct device *da9034_dev = rdev_get_dev(rdev)->parent; + uint8_t reg_val; + int ret; + + ret = da903x_read(da9034_dev, info->enable_reg, ®_val); + if (ret) + return ret; + + return reg_val & (1 << info->enable_bit); +} + +/* DA9030 specific operations */ +static int da |