diff options
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/regulator/Kconfig | 7 | ||||
-rw-r--r-- | drivers/regulator/Makefile | 1 | ||||
-rw-r--r-- | drivers/regulator/core.c | 383 | ||||
-rw-r--r-- | drivers/regulator/internal.h | 27 | ||||
-rw-r--r-- | drivers/regulator/of_regulator.c | 34 | ||||
-rw-r--r-- | drivers/regulator/qcom_spmi-regulator.c | 84 | ||||
-rw-r--r-- | drivers/regulator/sc2731-regulator.c | 256 | ||||
-rw-r--r-- | drivers/regulator/tps65218-regulator.c | 5 |
8 files changed, 598 insertions, 199 deletions
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index 96cd55f9e3c5..b27417ca188a 100644 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig @@ -744,6 +744,13 @@ config REGULATOR_S5M8767 via I2C bus. S5M8767A have 9 Bucks and 28 LDOs output and supports DVS mode with 8bits of output voltage control. +config REGULATOR_SC2731 + tristate "Spreadtrum SC2731 power regulator driver" + depends on MFD_SC27XX_PMIC || COMPILE_TEST + help + This driver provides support for the voltage regulators on the + SC2731 PMIC. + config REGULATOR_SKY81452 tristate "Skyworks Solutions SKY81452 voltage regulator" depends on MFD_SKY81452 diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile index 80ffc57a9ca3..19fea09ba10a 100644 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile @@ -95,6 +95,7 @@ obj-$(CONFIG_REGULATOR_RT5033) += rt5033-regulator.o obj-$(CONFIG_REGULATOR_S2MPA01) += s2mpa01.o obj-$(CONFIG_REGULATOR_S2MPS11) += s2mps11.o obj-$(CONFIG_REGULATOR_S5M8767) += s5m8767.o +obj-$(CONFIG_REGULATOR_SC2731) += sc2731-regulator.o obj-$(CONFIG_REGULATOR_SKY81452) += sky81452-regulator.o obj-$(CONFIG_REGULATOR_STM32_VREFBUF) += stm32-vrefbuf.o obj-$(CONFIG_REGULATOR_STW481X_VMMC) += stw481x-vmmc.o diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index b64b7916507f..42681c10cbe4 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -58,8 +58,6 @@ static bool has_full_constraints; static struct dentry *debugfs_root; -static struct class regulator_class; - /* * struct regulator_map * @@ -112,11 +110,6 @@ static struct regulator *create_regulator(struct regulator_dev *rdev, const char *supply_name); static void _regulator_put(struct regulator *regulator); -static struct regulator_dev *dev_to_rdev(struct device *dev) -{ - return container_of(dev, struct regulator_dev, dev); -} - static const char *rdev_get_name(struct regulator_dev *rdev) { if (rdev->constraints && rdev->constraints->name) @@ -236,26 +229,35 @@ static int regulator_check_voltage(struct regulator_dev *rdev, return 0; } +/* return 0 if the state is valid */ +static int regulator_check_states(suspend_state_t state) +{ + return (state > PM_SUSPEND_MAX || state == PM_SUSPEND_TO_IDLE); +} + /* Make sure we select a voltage that suits the needs of all * regulator consumers */ static int regulator_check_consumers(struct regulator_dev *rdev, - int *min_uV, int *max_uV) + int *min_uV, int *max_uV, + suspend_state_t state) { struct regulator *regulator; + struct regulator_voltage *voltage; list_for_each_entry(regulator, &rdev->consumer_list, list) { + voltage = ®ulator->voltage[state]; /* * Assume consumers that didn't say anything are OK * with anything in the constraint range. */ - if (!regulator->min_uV && !regulator->max_uV) + if (!voltage->min_uV && !voltage->max_uV) continue; - if (*max_uV > regulator->max_uV) - *max_uV = regulator->max_uV; - if (*min_uV < regulator->min_uV) - *min_uV = regulator->min_uV; + if (*max_uV > voltage->max_uV) + *max_uV = voltage->max_uV; + if (*min_uV < voltage->min_uV) + *min_uV = voltage->min_uV; } if (*min_uV > *max_uV) { @@ -324,6 +326,24 @@ static int regulator_mode_constrain(struct regulator_dev *rdev, return -EINVAL; } +static inline struct regulator_state * +regulator_get_suspend_state(struct regulator_dev *rdev, suspend_state_t state) +{ + if (rdev->constraints == NULL) + return NULL; + + switch (state) { + case PM_SUSPEND_STANDBY: + return &rdev->constraints->state_standby; + case PM_SUSPEND_MEM: + return &rdev->constraints->state_mem; + case PM_SUSPEND_MAX: + return &rdev->constraints->state_disk; + default: + return NULL; + } +} + static ssize_t regulator_uV_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -731,29 +751,32 @@ static int drms_uA_update(struct regulator_dev *rdev) } static int suspend_set_state(struct regulator_dev *rdev, - struct regulator_state *rstate) + suspend_state_t state) { int ret = 0; + struct regulator_state *rstate; + + rstate = regulator_get_suspend_state(rdev, state); + if (rstate == NULL) + return -EINVAL; /* If we have no suspend mode configration don't set anything; * only warn if the driver implements set_suspend_voltage or * set_suspend_mode callback. */ - if (!rstate->enabled && !rstate->disabled) { + if (rstate->enabled != ENABLE_IN_SUSPEND && + rstate->enabled != DISABLE_IN_SUSPEND) { if (rdev->desc->ops->set_suspend_voltage || rdev->desc->ops->set_suspend_mode) rdev_warn(rdev, "No configuration\n"); return 0; } - if (rstate->enabled && rstate->disabled) { - rdev_err(rdev, "invalid configuration\n"); - return -EINVAL; - } - - if (rstate->enabled && rdev->desc->ops->set_suspend_enable) + if (rstate->enabled == ENABLE_IN_SUSPEND && + rdev->desc->ops->set_suspend_enable) ret = rdev->desc->ops->set_suspend_enable(rdev); - else if (rstate->disabled && rdev->desc->ops->set_suspend_disable) + else if (rstate->enabled == DISABLE_IN_SUSPEND && + rdev->desc->ops->set_suspend_disable) ret = rdev->desc->ops->set_suspend_disable(rdev); else /* OK if set_suspend_enable or set_suspend_disable is NULL */ ret = 0; @@ -778,28 +801,8 @@ static int suspend_set_state(struct regulator_dev *rdev, return ret; } } - return ret; -} - -/* locks held by caller */ -static int suspend_prepare(struct regulator_dev *rdev, suspend_state_t state) -{ - if (!rdev->constraints) - return -EINVAL; - switch (state) { - case PM_SUSPEND_STANDBY: - return suspend_set_state(rdev, - &rdev->constraints->state_standby); - case PM_SUSPEND_MEM: - return suspend_set_state(rdev, - &rdev->constraints->state_mem); - case PM_SUSPEND_MAX: - return suspend_set_state(rdev, - &rdev->constraints->state_disk); - default: - return -EINVAL; - } + return ret; } static void print_constraints(struct regulator_dev *rdev) @@ -1068,7 +1071,7 @@ static int set_machine_constraints(struct regulator_dev *rdev, /* do we need to setup our suspend state */ if (rdev->constraints->initial_state) { - ret = suspend_prepare(rdev, rdev->constraints->initial_state); + ret = suspend_set_state(rdev, rdev->constraints->initial_state); if (ret < 0) { rdev_err(rdev, "failed to set suspend state\n"); return ret; @@ -1356,9 +1359,9 @@ static struct regulator *create_regulator(struct regulator_dev *rdev, debugfs_create_u32("uA_load", 0444, regulator->debugfs, ®ulator->uA_load); debugfs_create_u32("min_uV", 0444, regulator->debugfs, - ®ulator->min_uV); + ®ulator->voltage[PM_SUSPEND_ON].min_uV); debugfs_create_u32("max_uV", 0444, regulator->debugfs, - ®ulator->max_uV); + ®ulator->voltage[PM_SUSPEND_ON].max_uV); debugfs_create_file("constraint_flags", 0444, regulator->debugfs, regulator, &constraint_flags_fops); @@ -1417,20 +1420,6 @@ static void regulator_supply_alias(struct device **dev, const char **supply) } } -static int of_node_match(struct device *dev, const void *data) -{ - return dev->of_node == data; -} - -static struct regulator_dev *of_find_regulator_by_node(struct device_node *np) -{ - struct device *dev; - - dev = class_find_device(®ulator_class, NULL, np, of_node_match); - - return dev ? dev_to_rdev(dev) : NULL; -} - static int regulator_match(struct device *dev, const void *data) { struct regulator_dev *r = dev_to_rdev(dev); @@ -2468,10 +2457,9 @@ static int _regulator_is_enabled(struct regulator_dev *rdev) return rdev->desc->ops->is_enabled(rdev); } -static int _regulator_list_voltage(struct regulator *regulator, - unsigned selector, int lock) +static int _regulator_list_voltage(struct regulator_dev *rdev, + unsigned selector, int lock) { - struct regulator_dev *rdev = regulator->rdev; const struct regulator_ops *ops = rdev->desc->ops; int ret; @@ -2487,7 +2475,8 @@ static int _regulator_list_voltage(struct regulator *regulator, if (lock) mutex_unlock(&rdev->mutex); } else if (rdev->is_switch && rdev->supply) { - ret = _regulator_list_voltage(rdev->supply, selector, lock); + ret = _regulator_list_voltage(rdev->supply->rdev, + selector, lock); } else { return -EINVAL; } @@ -2563,7 +2552,7 @@ EXPORT_SYMBOL_GPL(regulator_count_voltages); */ int regulator_list_voltage(struct regulator *regulator, unsigned selector) { - return _regulator_list_voltage(regulator, selector, 1); + return _regulator_list_voltage(regulator->rdev, selector, 1); } EXPORT_SYMBOL_GPL(regulator_list_voltage); @@ -2605,8 +2594,8 @@ int regulator_get_hardware_vsel_register(struct regulator *regulator, if (ops->set_voltage_sel != regulator_set_voltage_sel_regmap) return -EOPNOTSUPP; - *vsel_reg = rdev->desc->vsel_reg; - *vsel_mask = rdev->desc->vsel_mask; + *vsel_reg = rdev->desc->vsel_reg; + *vsel_mask = rdev->desc->vsel_mask; return 0; } @@ -2897,10 +2886,38 @@ out: return ret; } +static int _regulator_do_set_suspend_voltage(struct regulator_dev *rdev, + int min_uV, int max_uV, suspend_state_t state) +{ + struct regulator_state *rstate; + int uV, sel; + + rstate = regulator_get_suspend_state(rdev, state); + if (rstate == NULL) + return -EINVAL; + + if (min_uV < rstate->min_uV) + min_uV = rstate->min_uV; + if (max_uV > rstate->max_uV) + max_uV = rstate->max_uV; + + sel = regulator_map_voltage(rdev, min_uV, max_uV); + if (sel < 0) + return sel; + + uV = rdev->desc->ops->list_voltage(rdev, sel); + if (uV >= min_uV && uV <= max_uV) + rstate->uV = uV; + + return 0; +} + static int regulator_set_voltage_unlocked(struct regulator *regulator, - int min_uV, int max_uV) + int min_uV, int max_uV, + suspend_state_t state) { struct regulator_dev *rdev = regulator->rdev; + struct regulator_voltage *voltage = ®ulator->voltage[state]; int ret = 0; int old_min_uV, old_max_uV; int current_uV; @@ -2911,7 +2928,7 @@ static int regulator_set_voltage_unlocked(struct regulator *regulator, * should be a noop (some cpufreq implementations use the same * voltage for multiple frequencies, for example). */ - if (regulator->min_uV == min_uV && regulator->max_uV == max_uV) + if (voltage->min_uV == min_uV && voltage->max_uV == max_uV) goto out; /* If we're trying to set a range that overlaps the current voltage, @@ -2921,8 +2938,8 @@ static int regulator_set_voltage_unlocked(struct regulator *regulator, if (!regulator_ops_is_valid(rdev, REGULATOR_CHANGE_VOLTAGE)) { current_uV = _regulator_get_voltage(rdev); if (min_uV <= current_uV && current_uV <= max_uV) { - regulator->min_uV = min_uV; - regulator->max_uV = max_uV; + voltage->min_uV = min_uV; + voltage->max_uV = max_uV; goto out; } } @@ -2940,12 +2957,12 @@ static int regulator_set_voltage_unlocked(struct regulator *regulator, goto out; /* restore original values in case of error */ - old_min_uV = regulator->min_uV; - old_max_uV = regulator->max_uV; - regulator->min_uV = min_uV; - regulator->max_uV = max_uV; + old_min_uV = voltage->min_uV; + old_max_uV = voltage->max_uV; + voltage->min_uV = min_uV; + voltage->max_uV = max_uV; - ret = regulator_check_consumers(rdev, &min_uV, &max_uV); + ret = regulator_check_consumers(rdev, &min_uV, &max_uV, state); if (ret < 0) goto out2; @@ -2963,7 +2980,7 @@ static int regulator_set_voltage_unlocked(struct regulator *regulator, goto out2; } - best_supply_uV = _regulator_list_voltage(regulator, selector, 0); + best_supply_uV = _regulator_list_voltage(rdev, selector, 0); if (best_supply_uV < 0) { ret = best_supply_uV; goto out2; @@ -2982,7 +2999,7 @@ static int regulator_set_voltage_unlocked(struct regulator *regulator, if (supply_change_uV > 0) { ret = regulator_set_voltage_unlocked(rdev->supply, - best_supply_uV, INT_MAX); + best_supply_uV, INT_MAX, state); if (ret) { dev_err(&rdev->dev, "Failed to increase supply voltage: %d\n", ret); @@ -2990,13 +3007,17 @@ static int regulator_set_voltage_unlocked(struct regulator *regulator, } } - ret = _regulator_do_set_voltage(rdev, min_uV, max_uV); + if (state == PM_SUSPEND_ON) + ret = _regulator_do_set_voltage(rdev, min_uV, max_uV); + else + ret = _regulator_do_set_suspend_voltage(rdev, min_uV, + max_uV, state); if (ret < 0) goto out2; if (supply_change_uV < 0) { ret = regulator_set_voltage_unlocked(rdev->supply, - best_supply_uV, INT_MAX); + best_supply_uV, INT_MAX, state); if (ret) dev_warn(&rdev->dev, "Failed to decrease supply voltage: %d\n", ret); @@ -3007,8 +3028,8 @@ static int regulator_set_voltage_unlocked(struct regulator *regulator, out: return ret; out2: - regulator->min_uV = old_min_uV; - regulator->max_uV = old_max_uV; + voltage->min_uV = old_min_uV; + voltage->max_uV = old_max_uV; return ret; } @@ -3037,7 +3058,8 @@ int regulator_set_voltage(struct regulator *regulator, int min_uV, int max_uV) regulator_lock_supply(regulator->rdev); - ret = regulator_set_voltage_unlocked(regulator, min_uV, max_uV); + ret = regulator_set_voltage_unlocked(regulator, min_uV, max_uV, + PM_SUSPEND_ON); regulator_unlock_supply(regulator->rdev); @@ -3045,6 +3067,89 @@ int regulator_set_voltage(struct regulator *regulator, int min_uV, int max_uV) } EXPORT_SYMBOL_GPL(regulator_set_voltage); +static inline int regulator_suspend_toggle(struct regulator_dev *rdev, + suspend_state_t state, bool en) +{ + struct regulator_state *rstate; + + rstate = regulator_get_suspend_state(rdev, state); + if (rstate == NULL) + return -EINVAL; + + if (!rstate->changeable) + return -EPERM; + + rstate->enabled = en; + + return 0; +} + +int regulator_suspend_enable(struct regulator_dev *rdev, + suspend_state_t state) +{ + return regulator_suspend_toggle(rdev, state, true); +} +EXPORT_SYMBOL_GPL(regulator_suspend_enable); + +int regulator_suspend_disable(struct regulator_dev *rdev, + suspend_state_t state) +{ + struct regulator *regulator; + struct regulator_voltage *voltage; + + /* + * if any consumer wants this regulator device keeping on in + * suspend states, don't set it as disabled. + */ + list_for_each_entry(regulator, &rdev->consumer_list, list) { + voltage = ®ulator->voltage[state]; + if (voltage->min_uV || voltage->max_uV) + return 0; + } + + return regulator_suspend_toggle(rdev, state, false); +} +EXPORT_SYMBOL_GPL(regulator_suspend_disable); + +static int _regulator_set_suspend_voltage(struct regulator *regulator, + int min_uV, int max_uV, + suspend_state_t state) +{ + struct regulator_dev *rdev = regulator->rdev; + struct regulator_state *rstate; + + rstate = regulator_get_suspend_state(rdev, state); + if (rstate == NULL) + return -EINVAL; + + if (rstate->min_uV == rstate->max_uV) { + rdev_err(rdev, "The suspend voltage can't be changed!\n"); + return -EPERM; + } + + return regulator_set_voltage_unlocked(regulator, min_uV, max_uV, state); +} + +int regulator_set_suspend_voltage(struct regulator *regulator, int min_uV, + int max_uV, suspend_state_t state) +{ + int ret = 0; + + /* PM_SUSPEND_ON is handled by regulator_set_voltage() */ + if (regulator_check_states(state) || state == PM_SUSPEND_ON) + return -EINVAL; + + regulator_lock_supply(regulator->rdev); + + ret = _regulator_set_suspend_voltage(regulator, min_uV, + max_uV, state); + + regulator_unlock_supply(regulator->rdev); + + return ret; +} +EXPORT_SYMBOL_GPL(regulator_set_suspend_voltage); + /** * regulator_set_voltage_time - get raise/fall time * @regulator: regulator source @@ -3138,6 +3243,7 @@ EXPORT_SYMBOL_GPL(regulator_set_voltage_time_sel); int regulator_sync_voltage(struct regulator *regulator) { struct regulator_dev *rdev = regulator->rdev; + struct regulator_voltage *voltage = ®ulator->voltage[PM_SUSPEND_ON]; int ret, min_uV, max_uV; mutex_lock(&rdev->mutex); @@ -3149,20 +3255,20 @@ int regulator_sync_voltage(struct regulator *regulator) } /* This is only going to work if we've had a voltage configured. */ - if (!regulator->min_uV && !regulator->max_uV) { + if (!voltage->min_uV && !voltage->max_uV) { ret = -EINVAL; goto out; } - min_uV = regulator->min_uV; - max_uV = regulator->max_uV; + min_uV = voltage->min_uV; + max_uV = voltage->max_uV; /* This should be a paranoia check... */ ret = regulator_check_voltage(rdev, &min_uV, &max_uV); if (ret < 0) goto out; - ret = regulator_check_consumers(rdev, &min_uV, &max_uV); + ret = regulator_check_consumers(rdev, &min_uV, &max_uV, 0); if (ret < 0) goto out; @@ -3918,12 +4024,6 @@ static void regulator_dev_release(struct device *dev) kfree(rdev); } -static struct class regulator_class = { - .name = "regulator", - .dev_release = regulator_dev_release, - .dev_groups = regulator_dev_groups, -}; - static void rdev_init_debugfs(struct regulator_dev *rdev) { struct device *parent = rdev->dev.parent; @@ -4174,81 +4274,86 @@ void regulator_unregister(struct regulator_dev *rdev) } EXPORT_SYMBOL_GPL(regulator_unregister); -static int _regulator_suspend_prepare(struct device *dev, void *data) +#ifdef CONFIG_SUSPEND +static int _regulator_suspend_late(struct device *dev, void *data) { struct regulator_dev *rdev = dev_to_rdev(dev); - const suspend_state_t *state = data; + suspend_state_t *state = data; int ret; mutex_lock(&rdev->mutex); - ret = suspend_prepare(rdev, *state); + ret = suspend_set_state(rdev, *state); mutex_unlock(&rdev->mutex); return ret; } /** - * regulator_suspend_prepare - prepare regulators for system wide suspend + * regulator_suspend_late - prepare regulators for system wide suspend * @state: system suspend state * * Configure each regulator with it's suspend operating parameters for state. - * This will usually be called by machine suspend code prior to supending. */ -int regulator_suspend_prepare(suspend_state_t state) +static int regulator_suspend_late(struct device *dev) { - /* ON is handled by regulator active state */ - if (state == PM_SUSPEND_ON) - return -EINVAL; + suspend_state_t state = pm_suspend_target_state; return class_for_each_device(®ulator_class, NULL, &state, - _regulator_suspend_prepare); + _regulator_suspend_late); } -EXPORT_SYMBOL_GPL(regulator_suspend_prepare); - -static int _regulator_suspend_finish(struct device *dev, void *data) +static int _regulator_resume_early(struct device *dev, void *data) { + int ret = 0; struct regulator_dev *rdev = dev_to_rdev(dev); - int ret; + suspend_state_t *state = data; + struct regulator_state *rstate; + + rstate = regulator_get_suspend_state(rdev, *state); + if (rstate == NULL) + return -EINVAL; mutex_lock(&rdev->mutex); - if (rdev->use_count > 0 || rdev->constraints->always_on) { - if (!_regulator_is_enabled(rdev)) { - ret = _regulator_do_enable(rdev); - if (ret) - dev_err(dev, - "Failed to resume regulator %d\n", - ret); - } - } else { - if (!have_full_constraints()) - goto unlock; - if (!_regulator_is_enabled(rdev)) - goto unlock; - ret = _regulator_do_disable(rdev); - if (ret) - dev_err(dev, "Failed to suspend regulator %d\n", ret); - } -unlock: + if (rdev->desc->ops->resume_early && + (rstate->enabled == ENABLE_IN_SUSPEND || + rstate->enabled == DISABLE_IN_SUSPEND)) + ret = rdev->desc->ops->resume_early(rdev); + mutex_unlock(&rdev->mutex); - /* Keep processing regulators in spite of any errors */ - return 0; + return ret; } -/** - * regulator_suspend_finish - resume regulators from system wide suspend - * - * Turn on regulators that might be turned off by regulator_suspend_prepare - * and that should be turned on according to the regulators properties. - */ -int regulator_suspend_finish(void) +static int regulator_resume_early(struct device *dev) { - return class_for_each_device(®ulator_class, NULL, NULL, - _regulator_suspend_finish); + suspend_state_t state = pm_suspend_target_state; + + return class_for_each_device(®ulator_class, NULL, &state, + _regulator_resume_early); } -EXPORT_SYMBOL_GPL(regulator_suspend_finish); +#else /* !CONFIG_SUSPEND */ + +#define regulator_suspend_late NULL +#define regulator_resume_early NULL + +#endif /* !CONFIG_SUSPEND */ + +#ifdef CONFIG_PM +static const struct dev_pm_ops __maybe_unused regulator_pm_ops = { + .suspend_late = regulator_suspend_late, + .resume_early = regulator_resume_early, +}; +#endif + +struct class regulator_class = { + .name = "regulator", + .dev_release = regulator_dev_release, + .dev_groups = regulator_dev_groups, +#ifdef CONFIG_PM + .pm = ®ulator_pm_ops, +#endif +}; /** * regulator_has_full_constraints - the system has fully specified constraints * @@ -4424,8 +4529,8 @@ static void regulator_summary_show_subtree(struct seq_file *s, switch (rdev->desc->type) { case REGULATOR_VOLTAGE: seq_printf(s, "%37dmV %5dmV", - consumer->min_uV / 1000, - consumer->max_uV / 1000); + consumer->voltage[PM_SUSPEND_ON].min_uV / 1000, + consumer->voltage[PM_SUSPEND_ON].max_uV / 1000); break; case REGULATOR_CURRENT: break; diff --git a/drivers/regulator/internal.h b/drivers/regulator/internal.h index 66a8ea0c8386..abfd56e8c78a 100644 --- a/drivers/regulator/internal.h +++ b/drivers/regulator/internal.h @@ -16,10 +16,25 @@ #ifndef __REGULATOR_INTERNAL_H #define __REGULATOR_INTERNAL_H +#include <linux/suspend.h> + +#define REGULATOR_STATES_NUM (PM_SUSPEND_MAX + 1) + +struct regulator_voltage { + int min_uV; + int max_uV; +}; + /* * struct regulator * * One for each consumer device. + * @voltage - a voltage array for each state of runtime, i.e.: + * PM_SUSPEND_ON + * PM_SUSPEND_TO_IDLE + * PM_SUSPEND_STANDBY + * PM_SUSPEND_MEM + * PM_SUSPEND_MAX */ struct regulator { struct device *dev; @@ -27,14 +42,22 @@ struct regulator { unsigned int always_on:1; unsigned int bypass:1; int uA_load; - int min_uV; - int max_uV; + struct regulator_voltage voltage[REGULATOR_STATES_NUM]; const char *supply_name; struct device_attribute dev_attr; struct regulator_dev *rdev; struct dentry *debugfs; }; +extern struct class regulator_class; + +static inline struct regulator_dev *dev_to_rdev(struct device *dev) +{ + return container_of(dev, struct regulator_dev, dev); +} + +struct regulator_dev *of_find_regulator_by_node(struct device_node *np); + #ifdef CONFIG_OF struct regulator_init_data *regulator_of_get_init_data(struct device *dev, const struct regulator_desc *desc, diff --git a/drivers/regulator/of_regulator.c b/drivers/regulator/of_regulator.c index 14637a01ba2d..092ed6efb3ec 100644 --- a/drivers/regulator/of_regulator.c +++ b/drivers/regulator/of_regulator.c @@ -177,14 +177,30 @@ static void of_get_regulation_constraints(struct device_node *np, if (of_property_read_bool(suspend_np, "regulator-on-in-suspend")) - suspend_state->enabled = true; + suspend_state->enabled = ENABLE_IN_SUSPEND; else if (of_property_read_bool(suspend_np, "regulator-off-in-suspend")) - suspend_state->disabled = true; + suspend_state->enabled = DISABLE_IN_SUSPEND; + else + suspend_state->enabled = DO_NOTHING_IN_SUSPEND; + + if (!of_property_read_u32(np, "regulator-suspend-min-microvolt", + &pval)) + suspend_state->min_uV = pval; + + if (!of_property_read_u32(np, "regulator-suspend-max-microvolt", + &pval)) + suspend_state->max_uV = pval; if (!of_property_read_u32(suspend_np, "regulator-suspend-microvolt", &pval)) suspend_state->uV = pval; + else /* otherwise use min_uV as default suspend voltage */ + suspend_state->uV = suspend_state->min_uV; + + if (of_property_read_bool(suspend_np, + "regulator-changeable-in-suspend")) + suspend_state->changeable = true; if (i == PM_SUSPEND_MEM) constraints->initial_state = PM_SUSPEND_MEM; @@ -376,3 +392,17 @@ struct regulator_init_data *regulator_of_get_init_data(struct device *dev, return init_data; } + +static int of_node_match(struct device *dev, const void *data) +{ + return dev->of_node == data; +} + +struct regulator_dev *of_find_regulator_by_node(struct device_node *np) +{ + struct device *dev; + + dev = class_find_device(®ulator_class, NULL, np, of_node_match); + + return dev ? dev_to_rdev(dev) : NULL; +} diff --git a/drivers/regulator/qcom_spmi-regulator.c b/drivers/regulator/qcom_spmi-regulator.c index 0241ada47d04..63c7a0c17777 100644 --- a/drivers/regulator/qcom_spmi-regulator.c +++ b/drivers/regulator/qcom_spmi-regulator.c @@ -486,24 +486,6 @@ static int spmi_vreg_update_bits(struct spmi_regulator *vreg, u16 addr, u8 val, return regmap_update_bits(vreg->regmap, vreg->base + addr, mask, val); } -static int spmi_regulator_common_is_enabled(struct regulator_dev *rdev) -{ - struct spmi_regulator *vreg = rdev_get_drvdata(rdev); - u8 reg; - - spmi_vreg_read(vreg, SPMI_COMMON_REG_ENABLE, ®, 1); - - return (reg & SPMI_COMMON_ENABLE_MASK) == SPMI_COMMON_ENABLE; -} - -static int spmi_regulator_common_enable(struct regulator_dev *rdev) -{ - struct spmi_regulator *vreg = rdev_get_drvdata(rdev); - - return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_ENABLE, - SPMI_COMMON_ENABLE, SPMI_COMMON_ENABLE_MASK); -} - static int spmi_regulator_vs_enable(struct regulator_dev *rdev) { struct spmi_regulator *vreg = rdev_get_drvdata(rdev); @@ -513,7 +495,7 @@ static int spmi_regulator_vs_enable(struct regulator_dev *rdev) vreg->vs_enable_time = ktime_get(); } - return spmi_regulator_common_enable(rdev); + return regulator_enable_regmap(rdev); } static int spmi_regulator_vs_ocp(struct regulator_dev *rdev) @@ -524,14 +506,6 @@ static int spmi_regulator_vs_ocp(struct regulator_dev *rdev) return spmi_vreg_write(vreg, SPMI_VS_REG_OCP, ®, 1); } -static int spmi_regulator_common_disable(struct regulator_dev *rdev) -{ - struct spmi_regulator *vreg = rdev_get_drvdata(rdev); - - return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_ENABLE, - SPMI_COMMON_DISABLE, SPMI_COMMON_ENABLE_MASK); -} - static int spmi_regulator_select_voltage(struct spmi_regulator *vreg, int min_uV, int max_uV) { @@ -1062,9 +1036,9 @@ static irqreturn_t spmi_regulator_vs_ocp_isr(int irq, void *data) } static struct regulator_ops spmi_smps_ops = { - .enable = spmi_regulator_common_enable, - .disable = spmi_regulator_common_disable, - .is_enabled = spmi_regulator_common_is_enabled, + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .is_enabled = regulator_is_enabled_regmap, .set_voltage_sel = spmi_regulator_common_set_voltage, .set_voltage_time_sel = spmi_regulator_set_voltage_time_sel, .get_voltage_sel = spmi_regulator_common_get_voltage, @@ -1077,9 +1051,9 @@ static struct regulator_ops spmi_smps_ops = { }; static struct regulator_ops spmi_ldo_ops = { - .enable = spmi_regulator_common_enable, - .disable = spmi_regulator_common_disable, - .is_enabled = spmi_regulator_common_is_enabled, + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .is_enabled = regulator_is_enabled_regmap, .set_voltage_sel = spmi_regulator_common_set_voltage, .get_voltage_sel = spmi_regulator_common_get_voltage, .map_voltage = spmi_regulator_common_map_voltage, @@ -1094,9 +1068,9 @@ static struct regulator_ops spmi_ldo_ops = { }; static struct regulator_ops spmi_ln_ldo_ops = { - .enable = spmi_regulator_common_enable, - .disable = spmi_regulator_common_disable, - .is_enabled = spmi_regulator_common_is_enabled, + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .is_enabled = regulator_is_enabled_regmap, .set_voltage_sel = spmi_regulator_common_set_voltage, .get_voltage_sel = spmi_regulator_common_get_voltage, .map_voltage = spmi_regulator_common_map_voltage, @@ -1107,8 +1081,8 @@ static struct regulator_ops spmi_ln_ldo_ops = { static struct regulator_ops spmi_vs_ops = { .enable = spmi_regulator_vs_enable, - .disable = spmi_regulator_common_disable, - .is_enabled = spmi_regulator_common_is_enabled, + .disable = regulator_disable_regmap, + .is_enabled = regulator_is_enabled_regmap, .set_pull_down = spmi_regulator_common_set_pull_down, .set_soft_start = spmi_regulator_common_set_soft_start, .set_over_current_protection = spmi_regulator_vs_ocp, @@ -1117,9 +1091,9 @@ static struct regulator_ops spmi_vs_ops = { }; static struct regulator_ops spmi_boost_ops = { - .enable = spmi_regulator_common_enable, - .disable = spmi_regulator_common_disable, - .is_enabled = spmi_regulator_common_is_enabled, + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .is_enabled = regulator_is_enabled_regmap, .set_voltage_sel = spmi_regulator_single_range_set_voltage, .get_voltage_sel = spmi_regulator_single_range_get_voltage, .map_voltage = spmi_regulator_single_map_voltage, @@ -1128,9 +1102,9 @@ static struct regulator_ops spmi_boost_ops = { }; static struct regulator_ops spmi_ftsmps_ops = { - .enable = spmi_regulator_common_enable, - .disable = spmi_regulator_common_disable, - .is_enabled = spmi_regulator_common_is_enabled, + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .is_enabled = regulator_is_enabled_regmap, .set_voltage_sel = spmi_regulator_common_set_voltage, .set_voltage_time_sel = spmi_regulator_set_voltage_time_sel, .get_voltage_sel = spmi_regulator_common_get_voltage, @@ -1143,9 +1117,9 @@ static struct regulator_ops spmi_ftsmps_ops = { }; static struct regulator_ops spmi_ult_lo_smps_ops = { - .enable = spmi_regulator_common_enable, - .disable = spmi_regulator_common_disable, - .is_enabled = spmi_regulator_common_is_enabled, + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .is_enabled = regulator_is_enabled_regmap, .set_voltage_sel = spmi_regulator_ult_lo_smps_set_voltage, .set_voltage_time_sel = spmi_regulator_set_voltage_time_sel, .get_voltage_sel = spmi_regulator_ult_lo_smps_get_voltage, @@ -1157,9 +1131,9 @@ static struct regulator_ops spmi_ult_lo_smps_ops = { }; static struct regulator_ops spmi_ult_ho_smps_ops = { - .enable = spmi_regulator_common_enable, - .disable = spmi_regulator_common_disable, - .is_enabled = spmi_regulator_common_is_enabled, + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .is_enabled = regulator_is_enabled_regmap, .set_voltage_sel = spmi_regulator_single_range_set_voltage, .set_voltage_time_sel = spmi_regulator_set_voltage_time_sel, .get_voltage_sel = spmi_regulator_single_range_get_voltage, @@ -1172,9 +1146,9 @@ static struct regulator_ops spmi_ult_ho_smps_ops = { }; static struct regulator_ops spmi_ult_ldo_ops = { - .enable = spmi_regulator_common_enable, - .disable = spmi_regulator_common_disable, - .is_enabled = spmi_regulator_common_is_enabled, + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .is_enabled = regulator_is_enabled_regmap, .set_voltage_sel = spmi_regulator_single_range_set_voltage, .get_voltage_sel = spmi_regulator_single_range_get_voltage, .map_voltage = spmi_regulator_single_map_voltage, @@ -1711,6 +1685,9 @@ static int qcom_spmi_regulator_probe(struct platform_device *pdev) vreg->desc.id = -1; vreg->desc.owner = THIS_MODULE; vreg->desc.type = REGULATOR_VOLTAGE; + vreg->desc.enable_reg = reg->base + SPMI_COMMON_REG_ENABLE; + vreg->desc.enable_mask = SPMI_COMMON_ENABLE_MASK; + vreg->desc.enable_val = SPMI_COMMON_ENABLE; vreg->desc.name = name = reg->name; vreg->desc.supply_name = reg->supply; vreg->desc.of_match = reg->name; @@ -1723,6 +1700,7 @@ static int qcom_spmi_regulator_probe(struct platform_device *pdev) config.dev = dev; config.driver_data = vreg; + config.regmap = regmap; rdev = devm_regulator_register(dev, &vreg->desc, &config); if (IS_ERR(rdev)) { dev_err(dev, "failed to register %s\n", name); diff --git a/drivers/regulator/sc2731-regulator.c b/drivers/regulator/sc2731-regulator.c new file mode 100644 index 000000000000..eb2bdf060b7b --- /dev/null +++ b/drivers/regulator/sc2731-regulator.c @@ -0,0 +1,256 @@ + //SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2017 Spreadtrum Communications Inc. + */ + +#include <linux/module.h> +#include <linux/of.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> +#include <linux/regulator/driver.h> +#include <linux/regulator/of_regulator.h> + +/* + * SC2731 regulator lock register + */ +#define SC2731_PWR_WR_PROT 0xf0c +#define SC2731_WR_UNLOCK_VALUE 0x6e7f + +/* + * SC2731 enable register + */ +#define SC2731_POWER_PD_SW 0xc28 +#define SC2731_LDO_CAMA0_PD 0xcfc +#define SC2731_LDO_CAMA1_PD 0xd04 +#define SC2731_LDO_CAMMOT_PD 0xd0c +#define SC2731_LDO_VLDO_PD 0xd6c +#define SC2731_LDO_EMMCCORE_PD 0xd2c +#define SC2731_LDO_SDCORE_PD 0xd74 +#define SC2731_LDO_SDIO_PD 0xd70 +#define SC2731_LDO_WIFIPA_PD 0xd4c +#define SC2731_LDO_USB33_PD 0xd5c +#define SC2731_LDO_CAMD0_PD 0xd7c +#define SC2731_LDO_CAMD1_PD 0xd84 +#define SC2731_LDO_CON_PD 0xd8c +#define SC2731_LDO_CAMIO_PD 0xd94 +#define SC2731_LDO_SRAM_PD 0xd78 + +/* + * SC2731 enable mask + */ +#define SC2731_DCDC_CPU0_PD_MASK BIT(4) +#define SC2731_DCDC_CPU1_PD_MASK BIT(3) +#define SC2731_DCDC_RF_PD_MASK BIT(11) +#define SC2731_LDO_CAMA0_PD_MASK BIT(0) +#define SC2731_LDO_CAMA1_PD_MASK BIT(0) +#define SC2731_LDO_CAMMOT_PD_MASK BIT(0) +#define SC2731_LDO_VLDO_PD_MASK BIT(0) +#define SC2731_LDO_EMMCCORE_PD_MASK BIT(0) +#define SC2731_LDO_SDCORE_PD_MASK BIT(0) +#define SC2731_LDO_SDIO_PD_MASK BIT(0) +#define SC2731_LDO_WIFIPA_PD_MASK BIT(0) +#define SC2731_LDO_USB33_PD_MASK BIT(0) +#define SC2731_LDO_CAMD0_PD_MASK BIT(0) +#define SC2731_LDO_CAMD1_PD_MASK BIT(0) +#define SC2731_LDO_CON_PD_MASK BIT(0) +#define SC2731_LDO_CAMIO_PD_MASK BIT(0) +#define SC2731_LDO_SRAM_PD_MASK BIT(0) + +/* + * SC2731 vsel register + */ +#define SC2731_DCDC_CPU0_VOL 0xc54 +#define SC2731_DCDC_CPU1_VOL 0xc64 +#define SC2731_DCDC_RF_VOL 0xcb8 +#define SC2731_LDO_CAMA0_VOL 0xd00 +#define SC2731_LDO_CAMA1_VOL 0xd08 +#define SC2731_LDO_CAMMOT_VOL 0xd10 +#define SC2731_LDO_VLDO_VOL 0xd28 +#define SC2731_LDO_EMMCCORE_VOL 0xd30 +#define SC2731_LDO_SDCORE_VOL 0xd38 +#define SC2731_LDO_SDIO_VOL 0xd40 +#define SC2731_LDO_WIFIPA_VOL 0xd50 +#define SC2731_LDO_USB33_VOL 0xd60 +#define SC2731_LDO_CAMD0_VOL 0xd80 +#define SC2731_LDO_CAMD1_VOL 0xd88 +#define SC2731_LDO_CON_VOL 0xd90 +#define SC2731_LDO_CAMIO_VOL 0xd98 +#define SC2731_LDO_SRAM_VOL 0xdB0 + +/* + * SC2731 vsel register mask + */ +#define SC2731_DCDC_CPU0_VOL_MASK GENMASK(8, 0) +#define SC2731_DCDC_CPU1_VOL_MASK GENMASK(8, 0) +#define SC2731_DCDC_RF_VOL_MASK GENMASK(8, 0) +#define SC2731_LDO_CAMA0_VOL_MASK GENMASK(7, 0) +#define SC2731_LDO_CAMA1_VOL_MASK GENMASK(7, 0) +#define SC2731_LDO_CAMMOT_VOL_MASK GENMASK(7, 0) +#define SC2731_LDO_VLDO_VOL_MASK GENMASK(7, 0) +#define SC2731_LDO_EMMCCORE_VOL_MASK GENMASK(7, 0) +#define SC2731_LDO_SDCORE_VOL_MASK GENMASK(7, 0) +#define SC2731_LDO_SDIO_VOL_MASK GENMASK(7, 0) +#define SC2731_LDO_WIFIPA_VOL_MASK GENMASK(7, 0) +#define SC2731_LDO_USB33_VOL_MASK GENMASK(7, 0) +#define SC2731_LDO_CAMD0_VOL_MASK GENMASK(6, 0) +#define SC2731_LDO_CAMD1_VOL_MASK GENMASK(6, 0) +#define SC2731_LDO_CON_VOL_MASK GENMASK(6, 0) +#define SC2731_LDO_CAMIO_VOL_MASK GENMASK(6, 0) +#define SC2731_LDO_SRAM_VOL_MASK GENMASK(6, 0) + +enum sc2731_regulator_id { + SC2731_BUCK_CPU0, + SC2731_BUCK_CPU1, + SC2731_BUCK_RF, + SC2731_LDO_CAMA0, + SC2731_LDO_CAMA1, + SC2731_LDO_CAMMOT, + SC2731_LDO_VLDO, + SC2731_LDO_EMMCCORE, + SC2731_LDO_SDCORE, + SC2731_LDO_SDIO, + SC2731_LDO_WIFIPA, + SC2731_LDO_USB33, + SC2731_LDO_CAMD0, + SC2731_LDO_CAMD1, + SC2731_LDO_CON, + SC2731_LDO_CAMIO, + SC2731_LDO_SRAM, +}; + +static const struct regulator_ops sc2731_regu_linear_ops = { + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .is_enabled = regulator_is_enabled_regmap, + .list_voltage = regulator_list_voltage_linear, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_voltage_sel = regulator_set_voltage_sel_regmap, +}; + +#define SC2731_REGU_LINEAR(_id, en_reg, en_mask, vreg, vmask, \ + vstep, vmin, vmax) { \ + .name = #_id, \ + .of_match = of_match_ptr(#_id), \ + .ops = &sc2731_regu_linear_ops, \ + .type = REGULATOR_VOLTAGE, \ + .id = SC2731_##_id, \ + .owner = THIS_MODULE, \ + .min_uV = vmin, \ + .n_voltages = ((vmax) - (vmin)) / (vstep) + 1, \ + .uV_step = vstep, \ + .enable_is_inverted = true, \ + .enable_val = 0, \ + .enable_reg = en_reg, \ + .enable_mask = en_mask, \ + .vsel_reg = vreg, \ + .vsel_mask = vmask, \ +} + +static struct regulator_desc regulators[] = { + SC2731_REGU_LINEAR(BUCK_CPU0, SC2731_POWER_PD_SW, + SC2731_DCDC_CPU0_PD_MASK, SC2731_DCDC_CPU0_VOL, + SC2731_DCDC_CPU0_VOL_MASK, 3125, 400000, 1996875), + SC2731_REGU_LINEAR(BUCK_CPU1, SC2731_POWER_PD_SW, + SC2731_DCDC_CPU1_PD_MASK, SC2731_DCDC_CPU1_VOL, + SC2731_DCDC_CPU1_VOL_MASK, 3125, 400000, 1996875), + SC2731_REGU_LINEAR(BUCK_RF, SC2731_POWER_PD_SW, SC2731_DCDC_RF_PD_MASK, + SC2731_DCDC_RF_VOL, SC2731_DCDC_RF_VOL_MASK, + 3125, 600000, 2196875), + SC2731_REGU_LINEAR(LDO_CAMA0, SC2731_LDO_CAMA0_PD, + SC2731_LDO_CAMA0_PD_MASK, SC2731_LDO_CAMA0_VOL, + SC2731_LDO_CAMA0_VOL_MASK, 10000, 1200000, 3750000), + SC2731_REGU_LINEAR(LDO_CAMA1, SC2731_LDO_CAMA1_PD, + SC2731_LDO_CAMA1_PD_MASK, SC2731_LDO_CAMA1_VOL, + SC2731_LDO_CAMA1_VOL_MASK, 10000, 1200000, 3750000), + SC2731_REGU_LINEAR(LDO_CAMMOT, SC2731_LDO_CAMMOT_PD, + SC2731_LDO_CAMMOT_PD_MASK, SC2731_LDO_CAMMOT_VOL, + SC2731_LDO_CAMMOT_VOL_MASK, 10000, 1200000, 3750000), + SC2731_REGU_LINEAR(LDO_VLDO, SC2731_LDO_VLDO_PD, + SC2731_LDO_VLDO_PD_MASK, SC2731_LDO_VLDO_VOL, + SC2731_LDO_VLDO_VOL_MASK, 10000, 1200000, 3750000), + SC2731_REGU_LINEAR(LDO_EMMCCORE, SC2731_LDO_EMMCCORE_PD, + SC2731_LDO_EMMCCORE_PD_MASK, SC2731_LDO_EMMCCORE_VOL, + SC2731_LDO_EMMCCORE_VOL_MASK, 10000, 1200000, + 3750000), + SC2731_REGU_LINEAR(LDO_SDCORE, SC2731_LDO_SDCORE_PD, + SC2731_LDO_SDCORE_PD_MASK, SC2731_LDO_SDCORE_VOL, + SC2731_LDO_SDCORE_VOL_MASK, 10000, 1200000, 3750000), + SC2731_REGU_LINEAR(LDO_SDIO, SC2731_LDO_SDIO_PD, + SC2731_LDO_SDIO_PD_MASK, SC2731_LDO_SDIO_VOL, + SC2731_LDO_SDIO_VOL_MASK, 10000, 1200000, 3750000), + SC2731_REGU_LINEAR(LDO_WIFIPA, SC2731_LDO_WIFIPA_PD, + SC2731_LDO_WIFIPA_PD_MASK, SC2731_LDO_WIFIPA_VOL, + SC2731_LDO_WIFIPA_VOL_MASK, 10000, 1200000, 3750000), + SC2731_REGU_LINEAR(LDO_USB33, SC2731_LDO_USB33_PD, + SC2731_LDO_USB33_PD_MASK, SC2731_LDO_USB33_VOL, + SC2731_LDO_USB33_VOL_MASK, 10000, 1200000, 3750000), + SC2731_REGU_LINEAR(LDO_CAMD0, SC2731_LDO_CAMD0_PD, + SC2731_LDO_CAMD0_PD_MASK, SC2731_LDO_CAMD0_VOL, + SC2731_LDO_CAMD0_VOL_MASK, 6250, 1000000, 1793750), + SC2731_REGU_LINEAR(LDO_CAMD1, SC2731_LDO_CAMD1_PD, + SC2731_LDO_CAMD1_PD_MASK, SC2731_LDO_CAMD1_VOL, + SC2731_LDO_CAMD1_VOL_MASK, 6250, 1000000, 1793750), + SC2731_REGU_LINEAR(LDO_CON, SC2731_LDO_CON_PD, + SC2731_LDO_CON_PD_MASK, SC2731_LDO_CON_VOL, + SC2731_LDO_CON_VOL_MASK, 6250, 1000000, 1793750), + SC2731_REGU_LINEAR(LDO_CAMIO, SC2731_LDO_CAMIO_PD, + SC2731_LDO_CAMIO_PD_MASK, SC2731_LDO_CAMIO_VOL, + SC2731_LDO_CAMIO_VOL_MASK, 6250, 1000000, 1793750), + SC2731_REGU_LINEAR(LDO_SRAM, SC2731_LDO_SRAM_PD, + SC2731_LDO_SRAM_PD_MASK, SC2731_LDO_SRAM_VOL, + SC2731_LDO_SRAM_VOL_MASK, 6250, 1000000, 1793750), +}; + +static int sc2731_regulator_unlock(struct regmap *regmap) +{ + return regmap_write(regmap, SC2731_PWR_WR_PROT, + SC2731_WR_UNLOCK_VALUE); +} + +static int sc2731_regulator_probe(struct platform_device *pdev) +{ + int i, ret; + struct regmap *regmap; + struct regulator_config config = { }; + struct regulator_dev *rdev; + + regmap = dev_get_regmap(pdev->dev.parent, NULL); + if (!regmap) { + dev_err(&pdev->dev, "failed to get regmap.\n"); + return -ENODEV; + } + + ret = sc2731_regulator_unlock(regmap); + if (ret) { + dev_err(&pdev->dev, "failed to release regulator lock\n"); + return ret; + } + + config.dev = &pdev->dev; + config.regmap = regmap; + + for (i = 0; i < ARRAY_SIZE(regulators); i++) { + rdev = devm_regulator_register(&pdev->dev, ®ulators[i], + &config); + if (IS_ERR(rdev)) { + dev_err(&pdev->dev, "failed to register regulator %s\n", + regulators[i].name); + return PTR_ERR(rdev); + } + } + + return 0; +} + +static struct platform_driver sc2731_regulator_driver = { + .driver = { + .name = "sc27xx-regulator", + }, + .probe = sc2731_regulator_probe, +}; + +module_platform_driver(sc2731_regulator_driver); + +MODULE_AUTHOR("Chen Junhui <erick.chen@spreadtrum.com>"); +MODULE_DESCRIPTION("Spreadtrum SC2731 regulator driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/regulator/tps65218-regulator.c b/drivers/regulator/tps65218-regulator.c index bc489958fed7..1827185beacc 100644 --- a/drivers/regulator/tps65218-regulator.c +++ b/drivers/regulator/tps65218-regulator.c @@ -28,9 +28,6 @@ #include <linux/regulator/machine.h> #include <linux/mfd/tps65218.h> -enum tps65218_regulators { DCDC1, DCDC2, DCDC3, DCDC4, - DCDC5, DCDC6, LDO1, LS3 }; - #define TPS65218_REGULATOR(_name, _of, _id, _type, _ops, _n, _vr, _vm, _er, \ _em, _cr, _cm, _lr, _nlr, _delay, _fuv, _sr, _sm) \ { \ @@ -329,6 +326,8 @@ static int tps65218_regulator_probe(struct platform_device *pdev) /* Allocate memory for strobes */ tps->strobes = devm_kzalloc(&pdev->dev, sizeof(u8) * TPS65218_NUM_REGULATOR, GFP_KERNEL); + if (!tps->strobes) + return -ENOMEM; for (i = 0; i < ARRAY_SIZE(regulators); i++) { rdev = devm_regulator_register(&pdev->dev, ®ulators[i], |