diff options
| -rw-r--r-- | drivers/regulator/core.c | 142 | ||||
| -rw-r--r-- | include/linux/regulator/consumer.h | 4 | ||||
| -rw-r--r-- | include/linux/regulator/driver.h | 5 | ||||
| -rw-r--r-- | include/linux/regulator/machine.h | 1 |
4 files changed, 91 insertions, 61 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index af88762b2fc8..ec8184d53f13 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -132,6 +132,19 @@ static bool have_full_constraints(void) return has_full_constraints || of_have_populated_dt(); } +static bool regulator_ops_is_valid(struct regulator_dev *rdev, int ops) +{ + if (!rdev->constraints) { + rdev_err(rdev, "no constraints\n"); + return false; + } + + if (rdev->constraints->valid_ops_mask & ops) + return true; + + return false; +} + static inline struct regulator_dev *rdev_get_supply(struct regulator_dev *rdev) { if (rdev && rdev->supply) @@ -198,28 +211,13 @@ static struct device_node *of_get_regulator(struct device *dev, const char *supp return regnode; } -static int _regulator_can_change_status(struct regulator_dev *rdev) -{ - if (!rdev->constraints) - return 0; - - if (rdev->constraints->valid_ops_mask & REGULATOR_CHANGE_STATUS) - return 1; - else - return 0; -} - /* Platform voltage constraint check */ static int regulator_check_voltage(struct regulator_dev *rdev, int *min_uV, int *max_uV) { BUG_ON(*min_uV > *max_uV); - if (!rdev->constraints) { - rdev_err(rdev, "no constraints\n"); - return -ENODEV; - } - if (!(rdev->constraints->valid_ops_mask & REGULATOR_CHANGE_VOLTAGE)) { + if (!regulator_ops_is_valid(rdev, REGULATOR_CHANGE_VOLTAGE)) { rdev_err(rdev, "voltage operation not allowed\n"); return -EPERM; } @@ -275,11 +273,7 @@ static int regulator_check_current_limit(struct regulator_dev *rdev, { BUG_ON(*min_uA > *max_uA); - if (!rdev->constraints) { - rdev_err(rdev, "no constraints\n"); - return -ENODEV; - } - if (!(rdev->constraints->valid_ops_mask & REGULATOR_CHANGE_CURRENT)) { + if (!regulator_ops_is_valid(rdev, REGULATOR_CHANGE_CURRENT)) { rdev_err(rdev, "current operation not allowed\n"); return -EPERM; } @@ -312,11 +306,7 @@ static int regulator_mode_constrain(struct regulator_dev *rdev, int *mode) return -EINVAL; } - if (!rdev->constraints) { - rdev_err(rdev, "no constraints\n"); - return -ENODEV; - } - if (!(rdev->constraints->valid_ops_mask & REGULATOR_CHANGE_MODE)) { + if (!regulator_ops_is_valid(rdev, REGULATOR_CHANGE_MODE)) { rdev_err(rdev, "mode operation not allowed\n"); return -EPERM; } @@ -333,20 +323,6 @@ static int regulator_mode_constrain(struct regulator_dev *rdev, int *mode) return -EINVAL; } -/* dynamic regulator mode switching constraint check */ -static int regulator_check_drms(struct regulator_dev *rdev) -{ - if (!rdev->constraints) { - rdev_err(rdev, "no constraints\n"); - return -ENODEV; - } - if (!(rdev->constraints->valid_ops_mask & REGULATOR_CHANGE_DRMS)) { - rdev_dbg(rdev, "drms operation not allowed\n"); - return -EPERM; - } - return 0; -} - static ssize_t regulator_uV_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -692,8 +668,7 @@ static int drms_uA_update(struct regulator_dev *rdev) * first check to see if we can set modes at all, otherwise just * tell the consumer everything is OK. */ - err = regulator_check_drms(rdev); - if (err < 0) + if (!regulator_ops_is_valid(rdev, REGULATOR_CHANGE_DRMS)) return 0; if (!rdev->desc->ops->get_optimum_mode && @@ -891,7 +866,7 @@ static void print_constraints(struct regulator_dev *rdev) rdev_dbg(rdev, "%s\n", buf); if ((constraints->min_uV != constraints->max_uV) && - !(constraints->valid_ops_mask & REGULATOR_CHANGE_VOLTAGE)) + !regulator_ops_is_valid(rdev, REGULATOR_CHANGE_VOLTAGE)) rdev_warn(rdev, "Voltage range but no REGULATOR_CHANGE_VOLTAGE\n"); } @@ -933,6 +908,8 @@ static int machine_constraints_voltage(struct regulator_dev *rdev, } if (target_min != current_uV || target_max != current_uV) { + rdev_info(rdev, "Bringing %duV into %d-%duV\n", + current_uV, target_min, target_max); ret = _regulator_do_set_voltage( rdev, target_min, target_max); if (ret < 0) { @@ -1277,6 +1254,55 @@ static void unset_regulator_supplies(struct regulator_dev *rdev) } } +#ifdef CONFIG_DEBUG_FS +static ssize_t constraint_flags_read_file(struct file *file, + char __user *user_buf, + size_t count, loff_t *ppos) +{ + const struct regulator *regulator = file->private_data; + const struct regulation_constraints *c = regulator->rdev->constraints; + char *buf; + ssize_t ret; + + if (!c) + return 0; + + buf = kmalloc(PAGE_SIZE, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + ret = snprintf(buf, PAGE_SIZE, + "always_on: %u\n" + "boot_on: %u\n" + "apply_uV: %u\n" + "ramp_disable: %u\n" + "soft_start: %u\n" + "pull_down: %u\n" + "over_current_protection: %u\n", + c->always_on, + c->boot_on, + c->apply_uV, + c->ramp_disable, + c->soft_start, + c->pull_down, + c->over_current_protection); + + ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); + kfree(buf); + + return ret; +} + +#endif + +static const struct file_operations constraint_flags_fops = { +#ifdef CONFIG_DEBUG_FS + .open = simple_open, + .read = constraint_flags_read_file, + .llseek = default_llseek, +#endif +}; + #define REG_STR_SIZE 64 static struct regulator *create_regulator(struct regulator_dev *rdev, @@ -1332,6 +1358,9 @@ static struct regulator *create_regulator(struct regulator_dev *rdev, ®ulator->min_uV); debugfs_create_u32("max_uV", 0444, regulator->debugfs, ®ulator->max_uV); + debugfs_create_file("constraint_flags", 0444, + regulator->debugfs, regulator, + &constraint_flags_fops); } /* @@ -1339,7 +1368,7 @@ static struct regulator *create_regulator(struct regulator_dev *rdev, * it is then we don't need to do nearly so much work for * enable/disable calls. */ - if (!_regulator_can_change_status(rdev) && + if (!regulator_ops_is_valid(rdev, REGULATOR_CHANGE_STATUS) && _regulator_is_enabled(rdev)) regulator->always_on = true; @@ -2117,15 +2146,15 @@ static int _regulator_enable(struct regulator_dev *rdev) lockdep_assert_held_once(&rdev->mutex); /* check voltage and requested load before enabling */ - if (rdev->constraints && - (rdev->constraints->valid_ops_mask & REGULATOR_CHANGE_DRMS)) + if (regulator_ops_is_valid(rdev, REGULATOR_CHANGE_DRMS)) drms_uA_update(rdev); if (rdev->use_count == 0) { /* The regulator may on if it's not switchable or left on */ ret = _regulator_is_enabled(rdev); if (ret == -EINVAL || ret == 0) { - if (!_regulator_can_change_status(rdev)) + if (!regulator_ops_is_valid(rdev, + REGULATOR_CHANGE_STATUS)) return -EPERM; ret = _regulator_do_enable(rdev); @@ -2227,7 +2256,7 @@ static int _regulator_disable(struct regulator_dev *rdev) (rdev->constraints && !rdev->constraints->always_on)) { /* we are last user */ - if (_regulator_can_change_status(rdev)) { + if (regulator_ops_is_valid(rdev, REGULATOR_CHANGE_STATUS)) { ret = _notifier_call_chain(rdev, REGULATOR_EVENT_PRE_DISABLE, NULL); @@ -2248,10 +2277,7 @@ static int _regulator_disable(struct regulator_dev *rdev) rdev->use_count = 0; } else if (rdev->use_count > 1) { - - if (rdev->constraints && - (rdev->constraints->valid_ops_mask & - REGULATOR_CHANGE_DRMS)) + if (regulator_ops_is_valid(rdev, REGULATOR_CHANGE_DRMS)) drms_uA_update(rdev); rdev->use_count--; @@ -2495,8 +2521,7 @@ int regulator_can_change_voltage(struct regulator *regulator) { struct regulator_dev *rdev = regulator->rdev; - if (rdev->constraints && - (rdev->constraints->valid_ops_mask & REGULATOR_CHANGE_VOLTAGE)) { + if (regulator_ops_is_valid(rdev, REGULATOR_CHANGE_VOLTAGE)) { if (rdev->desc->n_voltages - rdev->desc->linear_min_sel > 1) return 1; @@ -2650,7 +2675,7 @@ int regulator_is_supported_voltage(struct regulator *regulator, int i, voltages, ret; /* If we can't change voltage check the current voltage */ - if (!(rdev->constraints->valid_ops_mask & REGULATOR_CHANGE_VOLTAGE)) { + if (!regulator_ops_is_valid(rdev, REGULATOR_CHANGE_VOLTAGE)) { ret = regulator_get_voltage(regulator); if (ret >= 0) return min_uV <= ret && ret <= max_uV; @@ -2856,7 +2881,7 @@ static int regulator_set_voltage_unlocked(struct regulator *regulator, * return successfully even though the regulator does not support * changing the voltage. */ - if (!(rdev->constraints->valid_ops_mask & REGULATOR_CHANGE_VOLTAGE)) { + 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; @@ -3388,8 +3413,7 @@ int regulator_allow_bypass(struct regulator *regulator, bool enable) if (!rdev->desc->ops->set_bypass) return 0; - if (rdev->constraints && - !(rdev->constraints->valid_ops_mask & REGULATOR_CHANGE_BYPASS)) + if (!regulator_ops_is_valid(rdev, REGULATOR_CHANGE_BYPASS)) return 0; mutex_lock(&rdev->mutex); @@ -4429,7 +4453,7 @@ static int __init regulator_late_cleanup(struct device *dev, void *data) if (c && c->always_on) return 0; - if (c && !(c->valid_ops_mask & REGULATOR_CHANGE_STATUS)) + if (!regulator_ops_is_valid(rdev, REGULATOR_CHANGE_STATUS)) return 0; mutex_lock(&rdev->mutex); diff --git a/include/linux/regulator/consumer.h b/include/linux/regulator/consumer.h index 48603506f8de..80dc4e51d14a 100644 --- a/include/linux/regulator/consumer.h +++ b/include/linux/regulator/consumer.h @@ -224,7 +224,7 @@ int regulator_bulk_force_disable(int num_consumers, void regulator_bulk_free(int num_consumers, struct regulator_bulk_data *consumers); -int regulator_can_change_voltage(struct regulator *regulator); +int __deprecated regulator_can_change_voltage(struct regulator *regulator); int regulator_count_voltages(struct regulator *regulator); int regulator_list_voltage(struct regulator *regulator, unsigned selector); int regulator_is_supported_voltage(struct regulator *regulator, @@ -436,7 +436,7 @@ static inline void regulator_bulk_free(int num_consumers, { } -static inline int regulator_can_change_voltage(struct regulator *regulator) +static inline int __deprecated regulator_can_change_voltage(struct regulator *regulator) { return 0; } diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h index 9ac3f9879576..fcfa40a6692c 100644 --- a/include/linux/regulator/driver.h +++ b/include/linux/regulator/driver.h @@ -93,6 +93,9 @@ struct regulator_linear_range { * @get_current_limit: Get the configured limit for a current-limited regulator. * @set_input_current_limit: Configure an input limit. * + * @set_over_current_protection: Support capability of automatically shutting + * down when detecting an over current event. + * * @set_active_discharge: Set active discharge enable/disable of regulators. * * @set_mode: Set the configured operating mode for the regulator. @@ -255,6 +258,8 @@ enum regulator_type { * * @vsel_reg: Register for selector when using regulator_regmap_X_voltage_ * @vsel_mask: Mask for register bitfield used for selector + * @csel_reg: Register for TPS65218 LS3 current regulator + * @csel_mask: Mask for TPS65218 LS3 current regulator * @apply_reg: Register for initiate voltage change on the output when * using regulator_set_voltage_sel_regmap * @apply_bit: Register bitfield used for initiate voltage change on the diff --git a/include/linux/regulator/machine.h b/include/linux/regulator/machine.h index 5d627c83a630..ad3e5158e586 100644 --- a/include/linux/regulator/machine.h +++ b/include/linux/regulator/machine.h @@ -97,6 +97,7 @@ struct regulator_state { * @ramp_disable: Disable ramp delay when initialising or when setting voltage. * @soft_start: Enable soft start so that voltage ramps slowly. * @pull_down: Enable pull down when regulator is disabled. + * @over_current_protection: Auto disable on over current event. * * @input_uV: Input voltage for regulator when supplied by another regulator. * |