static int _regulator_is_enabled(struct regulator_dev *rdev);
static int _regulator_disable(struct regulator *regulator);
+static int _regulator_get_error_flags(struct regulator_dev *rdev, unsigned int *flags);
static int _regulator_get_current_limit(struct regulator_dev *rdev);
static unsigned int _regulator_get_mode(struct regulator_dev *rdev);
static int _notifier_call_chain(struct regulator_dev *rdev,
}
static DEVICE_ATTR_RO(bypass);
+#define REGULATOR_ERROR_ATTR(name, bit) \
+ static ssize_t name##_show(struct device *dev, struct device_attribute *attr, \
+ char *buf) \
+ { \
+ int ret; \
+ unsigned int flags; \
+ struct regulator_dev *rdev = dev_get_drvdata(dev); \
+ ret = _regulator_get_error_flags(rdev, &flags); \
+ if (ret) \
+ return ret; \
+ return sysfs_emit(buf, "%d\n", !!(flags & (bit))); \
+ } \
+ static DEVICE_ATTR_RO(name)
+
+REGULATOR_ERROR_ATTR(under_voltage, REGULATOR_ERROR_UNDER_VOLTAGE);
+REGULATOR_ERROR_ATTR(over_current, REGULATOR_ERROR_OVER_CURRENT);
+REGULATOR_ERROR_ATTR(regulation_out, REGULATOR_ERROR_REGULATION_OUT);
+REGULATOR_ERROR_ATTR(fail, REGULATOR_ERROR_FAIL);
+REGULATOR_ERROR_ATTR(over_temp, REGULATOR_ERROR_OVER_TEMP);
+REGULATOR_ERROR_ATTR(under_voltage_warn, REGULATOR_ERROR_UNDER_VOLTAGE_WARN);
+REGULATOR_ERROR_ATTR(over_current_warn, REGULATOR_ERROR_OVER_CURRENT_WARN);
+REGULATOR_ERROR_ATTR(over_voltage_warn, REGULATOR_ERROR_OVER_VOLTAGE_WARN);
+REGULATOR_ERROR_ATTR(over_temp_warn, REGULATOR_ERROR_OVER_TEMP_WARN);
+
/* Calculate the new optimum regulator operating mode based on the new total
* consumer load. All locks held by caller
*/
}
}
+ /*
+ * If there is no mechanism for controlling the regulator then
+ * flag it as always_on so we don't end up duplicating checks
+ * for this so much. Note that we could control the state of
+ * a supply to control the output on a regulator that has no
+ * direct control.
+ */
+ if (!rdev->ena_pin && !ops->enable) {
+ if (rdev->supply_name && !rdev->supply)
+ return -EPROBE_DEFER;
+
+ if (rdev->supply)
+ rdev->constraints->always_on =
+ rdev->supply->rdev->constraints->always_on;
+ else
+ rdev->constraints->always_on = true;
+ }
+
/* If the constraints say the regulator should be on at this point
* and we have control then make sure it is enabled.
*/
}
/**
- * _regulator_enable_delay - a delay helper function
+ * _regulator_delay_helper - a delay helper function
* @delay: time to delay in microseconds
*
* Delay for the requested amount of time as per the guidelines in:
*
* Documentation/timers/timers-howto.rst
*
- * The assumption here is that regulators will never be enabled in
+ * The assumption here is that these regulator operations will never used in
* atomic context and therefore sleeping functions can be used.
*/
-static void _regulator_enable_delay(unsigned int delay)
+static void _regulator_delay_helper(unsigned int delay)
{
unsigned int ms = delay / 1000;
unsigned int us = delay % 1000;
s64 remaining = ktime_us_delta(end, ktime_get());
if (remaining > 0)
- _regulator_enable_delay(remaining);
+ _regulator_delay_helper(remaining);
}
if (rdev->ena_pin) {
/* If poll_enabled_time is set, poll upto the delay calculated
* above, delaying poll_enabled_time uS to check if the regulator
* actually got enabled.
- * If the regulator isn't enabled after enable_delay has
- * expired, return -ETIMEDOUT.
+ * If the regulator isn't enabled after our delay helper has expired,
+ * return -ETIMEDOUT.
*/
if (rdev->desc->poll_enabled_time) {
unsigned int time_remaining = delay;
while (time_remaining > 0) {
- _regulator_enable_delay(rdev->desc->poll_enabled_time);
+ _regulator_delay_helper(rdev->desc->poll_enabled_time);
if (rdev->desc->ops->get_status) {
ret = _regulator_check_status_enabled(rdev);
return -ETIMEDOUT;
}
} else {
- _regulator_enable_delay(delay);
+ _regulator_delay_helper(delay);
}
trace_regulator_enable_complete(rdev_get_name(rdev));
}
/* Insert any necessary delays */
- if (delay >= 1000) {
- mdelay(delay / 1000);
- udelay(delay % 1000);
- } else if (delay) {
- udelay(delay);
- }
+ _regulator_delay_helper(delay);
if (best_val >= 0) {
unsigned long data = best_val;
&dev_attr_max_microvolts.attr,
&dev_attr_min_microamps.attr,
&dev_attr_max_microamps.attr,
+ &dev_attr_under_voltage.attr,
+ &dev_attr_over_current.attr,
+ &dev_attr_regulation_out.attr,
+ &dev_attr_fail.attr,
+ &dev_attr_over_temp.attr,
+ &dev_attr_under_voltage_warn.attr,
+ &dev_attr_over_current_warn.attr,
+ &dev_attr_over_voltage_warn.attr,
+ &dev_attr_over_temp_warn.attr,
&dev_attr_suspend_standby_state.attr,
&dev_attr_suspend_mem_state.attr,
&dev_attr_suspend_disk_state.attr,
if (attr == &dev_attr_bypass.attr)
return ops->get_bypass ? mode : 0;
+ if (attr == &dev_attr_under_voltage.attr ||
+ attr == &dev_attr_over_current.attr ||
+ attr == &dev_attr_regulation_out.attr ||
+ attr == &dev_attr_fail.attr ||
+ attr == &dev_attr_over_temp.attr ||
+ attr == &dev_attr_under_voltage_warn.attr ||
+ attr == &dev_attr_over_current_warn.attr ||
+ attr == &dev_attr_over_voltage_warn.attr ||
+ attr == &dev_attr_over_temp_warn.attr)
+ return ops->get_error_flags ? mode : 0;
+
/* constraints need specific supporting methods */
if (attr == &dev_attr_min_microvolts.attr ||
attr == &dev_attr_max_microvolts.attr)
projects / linux-2.6-microblaze.git / blobdiff