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path: root/drivers/regulator/core.c
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Diffstat (limited to 'drivers/regulator/core.c')
-rw-r--r--drivers/regulator/core.c88
1 files changed, 28 insertions, 60 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index b9d7b45c7295..68473d0cc57e 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -23,7 +23,6 @@
#include <linux/mutex.h>
#include <linux/suspend.h>
#include <linux/delay.h>
-#include <linux/gpio.h>
#include <linux/gpio/consumer.h>
#include <linux/of.h>
#include <linux/regmap.h>
@@ -82,7 +81,6 @@ struct regulator_enable_gpio {
struct gpio_desc *gpiod;
u32 enable_count; /* a number of enabled shared GPIO */
u32 request_count; /* a number of requested shared GPIO */
- unsigned int ena_gpio_invert:1;
};
/*
@@ -145,14 +143,6 @@ static bool regulator_ops_is_valid(struct regulator_dev *rdev, int ops)
return false;
}
-static inline struct regulator_dev *rdev_get_supply(struct regulator_dev *rdev)
-{
- if (rdev && rdev->supply)
- return rdev->supply->rdev;
-
- return NULL;
-}
-
/**
* regulator_lock_nested - lock a single regulator
* @rdev: regulator source
@@ -326,7 +316,7 @@ err_unlock:
* @rdev: regulator source
* @ww_ctx: w/w mutex acquire context
*
- * Unlock all regulators related with rdev by coupling or suppling.
+ * Unlock all regulators related with rdev by coupling or supplying.
*/
static void regulator_unlock_dependent(struct regulator_dev *rdev,
struct ww_acquire_ctx *ww_ctx)
@@ -341,7 +331,7 @@ static void regulator_unlock_dependent(struct regulator_dev *rdev,
* @ww_ctx: w/w mutex acquire context
*
* This function as a wrapper on regulator_lock_recursive(), which locks
- * all regulators related with rdev by coupling or suppling.
+ * all regulators related with rdev by coupling or supplying.
*/
static void regulator_lock_dependent(struct regulator_dev *rdev,
struct ww_acquire_ctx *ww_ctx)
@@ -924,14 +914,14 @@ static int drms_uA_update(struct regulator_dev *rdev)
int current_uA = 0, output_uV, input_uV, err;
unsigned int mode;
- lockdep_assert_held_once(&rdev->mutex.base);
-
/*
* first check to see if we can set modes at all, otherwise just
* tell the consumer everything is OK.
*/
- if (!regulator_ops_is_valid(rdev, REGULATOR_CHANGE_DRMS))
+ if (!regulator_ops_is_valid(rdev, REGULATOR_CHANGE_DRMS)) {
+ rdev_dbg(rdev, "DRMS operation not allowed\n");
return 0;
+ }
if (!rdev->desc->ops->get_optimum_mode &&
!rdev->desc->ops->set_load)
@@ -1003,7 +993,7 @@ static int suspend_set_state(struct regulator_dev *rdev,
if (rstate == NULL)
return 0;
- /* If we have no suspend mode configration don't set anything;
+ /* If we have no suspend mode configuration don't set anything;
* only warn if the driver implements set_suspend_voltage or
* set_suspend_mode callback.
*/
@@ -1131,7 +1121,7 @@ static int machine_constraints_voltage(struct regulator_dev *rdev,
int current_uV = _regulator_get_voltage(rdev);
if (current_uV == -ENOTRECOVERABLE) {
- /* This regulator can't be read and must be initted */
+ /* This regulator can't be read and must be initialized */
rdev_info(rdev, "Setting %d-%duV\n",
rdev->constraints->min_uV,
rdev->constraints->max_uV);
@@ -1349,7 +1339,9 @@ static int set_machine_constraints(struct regulator_dev *rdev,
* We'll only apply the initial system load if an
* initial mode wasn't specified.
*/
+ regulator_lock(rdev);
drms_uA_update(rdev);
+ regulator_unlock(rdev);
}
if ((rdev->constraints->ramp_delay || rdev->constraints->ramp_disable)
@@ -1780,7 +1772,7 @@ static int regulator_resolve_supply(struct regulator_dev *rdev)
struct device *dev = rdev->dev.parent;
int ret;
- /* No supply to resovle? */
+ /* No supply to resolve? */
if (!rdev->supply_name)
return 0;
@@ -2058,15 +2050,7 @@ static void _regulator_put(struct regulator *regulator)
debugfs_remove_recursive(regulator->debugfs);
if (regulator->dev) {
- int count = 0;
- struct regulator *r;
-
- list_for_each_entry(r, &rdev->consumer_list, list)
- if (r->dev == regulator->dev)
- count++;
-
- if (count == 1)
- device_link_remove(regulator->dev, &rdev->dev);
+ device_link_remove(regulator->dev, &rdev->dev);
/* remove any sysfs entries */
sysfs_remove_link(&rdev->dev.kobj, regulator->supply_name);
@@ -2237,38 +2221,21 @@ static int regulator_ena_gpio_request(struct regulator_dev *rdev,
{
struct regulator_enable_gpio *pin;
struct gpio_desc *gpiod;
- int ret;
- if (config->ena_gpiod)
- gpiod = config->ena_gpiod;
- else
- gpiod = gpio_to_desc(config->ena_gpio);
+ gpiod = config->ena_gpiod;
list_for_each_entry(pin, &regulator_ena_gpio_list, list) {
if (pin->gpiod == gpiod) {
- rdev_dbg(rdev, "GPIO %d is already used\n",
- config->ena_gpio);
+ rdev_dbg(rdev, "GPIO is already used\n");
goto update_ena_gpio_to_rdev;
}
}
- if (!config->ena_gpiod) {
- ret = gpio_request_one(config->ena_gpio,
- GPIOF_DIR_OUT | config->ena_gpio_flags,
- rdev_get_name(rdev));
- if (ret)
- return ret;
- }
-
pin = kzalloc(sizeof(struct regulator_enable_gpio), GFP_KERNEL);
- if (pin == NULL) {
- if (!config->ena_gpiod)
- gpio_free(config->ena_gpio);
+ if (pin == NULL)
return -ENOMEM;
- }
pin->gpiod = gpiod;
- pin->ena_gpio_invert = config->ena_gpio_invert;
list_add(&pin->list, &regulator_ena_gpio_list);
update_ena_gpio_to_rdev:
@@ -2289,7 +2256,6 @@ static void regulator_ena_gpio_free(struct regulator_dev *rdev)
if (pin->gpiod == rdev->ena_pin->gpiod) {
if (pin->request_count <= 1) {
pin->request_count = 0;
- gpiod_put(pin->gpiod);
list_del(&pin->list);
kfree(pin);
rdev->ena_pin = NULL;
@@ -2319,8 +2285,7 @@ static int regulator_ena_gpio_ctrl(struct regulator_dev *rdev, bool enable)
if (enable) {
/* Enable GPIO at initial use */
if (pin->enable_count == 0)
- gpiod_set_value_cansleep(pin->gpiod,
- !pin->ena_gpio_invert);
+ gpiod_set_value_cansleep(pin->gpiod, 1);
pin->enable_count++;
} else {
@@ -2331,8 +2296,7 @@ static int regulator_ena_gpio_ctrl(struct regulator_dev *rdev, bool enable)
/* Disable GPIO if not used */
if (pin->enable_count <= 1) {
- gpiod_set_value_cansleep(pin->gpiod,
- pin->ena_gpio_invert);
+ gpiod_set_value_cansleep(pin->gpiod, 0);
pin->enable_count = 0;
}
}
@@ -2409,7 +2373,7 @@ static int _regulator_do_enable(struct regulator_dev *rdev)
* timer wrapping.
* in case of multiple timer wrapping, either it can be
* detected by out-of-range remaining, or it cannot be
- * detected and we gets a panelty of
+ * detected and we get a penalty of
* _regulator_enable_delay().
*/
remaining = intended - start_jiffy;
@@ -2809,7 +2773,7 @@ static void regulator_disable_work(struct work_struct *work)
/**
* regulator_disable_deferred - disable regulator output with delay
* @regulator: regulator source
- * @ms: miliseconds until the regulator is disabled
+ * @ms: milliseconds until the regulator is disabled
*
* Execute regulator_disable() on the regulator after a delay. This
* is intended for use with devices that require some time to quiesce.
@@ -4943,7 +4907,7 @@ regulator_register(const struct regulator_desc *regulator_desc,
* device tree until we have handled it over to the core. If the
* config that was passed in to this function DOES NOT contain
* a descriptor, and the config after this call DOES contain
- * a descriptor, we definately got one from parsing the device
+ * a descriptor, we definitely got one from parsing the device
* tree.
*/
if (!cfg->ena_gpiod && config->ena_gpiod)
@@ -4975,15 +4939,13 @@ regulator_register(const struct regulator_desc *regulator_desc,
goto clean;
}
- if (config->ena_gpiod ||
- ((config->ena_gpio || config->ena_gpio_initialized) &&
- gpio_is_valid(config->ena_gpio))) {
+ if (config->ena_gpiod) {
mutex_lock(&regulator_list_mutex);
ret = regulator_ena_gpio_request(rdev, config);
mutex_unlock(&regulator_list_mutex);
if (ret != 0) {
- rdev_err(rdev, "Failed to request enable GPIO%d: %d\n",
- config->ena_gpio, ret);
+ rdev_err(rdev, "Failed to request enable GPIO: %d\n",
+ ret);
goto clean;
}
/* The regulator core took over the GPIO descriptor */
@@ -5251,6 +5213,12 @@ struct device *rdev_get_dev(struct regulator_dev *rdev)
}
EXPORT_SYMBOL_GPL(rdev_get_dev);
+struct regmap *rdev_get_regmap(struct regulator_dev *rdev)
+{
+ return rdev->regmap;
+}
+EXPORT_SYMBOL_GPL(rdev_get_regmap);
+
void *regulator_get_init_drvdata(struct regulator_init_data *reg_init_data)
{
return reg_init_data->driver_data;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.