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path: root/drivers/iio/industrialio-trigger.c
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Diffstat (limited to 'drivers/iio/industrialio-trigger.c')
-rw-r--r--drivers/iio/industrialio-trigger.c72
1 files changed, 41 insertions, 31 deletions
diff --git a/drivers/iio/industrialio-trigger.c b/drivers/iio/industrialio-trigger.c
index ea3c9859b258..b2c94abbb487 100644
--- a/drivers/iio/industrialio-trigger.c
+++ b/drivers/iio/industrialio-trigger.c
@@ -50,7 +50,7 @@ static ssize_t iio_trigger_read_name(struct device *dev,
char *buf)
{
struct iio_trigger *trig = to_iio_trigger(dev);
- return sprintf(buf, "%s\n", trig->name);
+ return sysfs_emit(buf, "%s\n", trig->name);
}
static DEVICE_ATTR(name, S_IRUGO, iio_trigger_read_name, NULL);
@@ -75,8 +75,7 @@ int __iio_trigger_register(struct iio_trigger *trig_info,
return trig_info->id;
/* Set the name used for the sysfs directory etc */
- dev_set_name(&trig_info->dev, "trigger%ld",
- (unsigned long) trig_info->id);
+ dev_set_name(&trig_info->dev, "trigger%d", trig_info->id);
ret = device_add(&trig_info->dev);
if (ret)
@@ -212,6 +211,7 @@ EXPORT_SYMBOL(iio_trigger_notify_done);
static int iio_trigger_get_irq(struct iio_trigger *trig)
{
int ret;
+
mutex_lock(&trig->pool_lock);
ret = bitmap_find_free_region(trig->pool,
CONFIG_IIO_CONSUMERS_PER_TRIGGER,
@@ -240,9 +240,9 @@ static void iio_trigger_put_irq(struct iio_trigger *trig, int irq)
int iio_trigger_attach_poll_func(struct iio_trigger *trig,
struct iio_poll_func *pf)
{
+ bool notinuse =
+ bitmap_empty(trig->pool, CONFIG_IIO_CONSUMERS_PER_TRIGGER);
int ret = 0;
- bool notinuse
- = bitmap_empty(trig->pool, CONFIG_IIO_CONSUMERS_PER_TRIGGER);
/* Prevent the module from being removed whilst attached to a trigger */
__module_get(pf->indio_dev->driver_module);
@@ -291,11 +291,10 @@ out_put_module:
int iio_trigger_detach_poll_func(struct iio_trigger *trig,
struct iio_poll_func *pf)
{
+ bool no_other_users =
+ bitmap_weight(trig->pool, CONFIG_IIO_CONSUMERS_PER_TRIGGER) == 1;
int ret = 0;
- bool no_other_users
- = (bitmap_weight(trig->pool,
- CONFIG_IIO_CONSUMERS_PER_TRIGGER)
- == 1);
+
if (trig->ops && trig->ops->set_trigger_state && no_other_users) {
ret = trig->ops->set_trigger_state(trig, false);
if (ret)
@@ -313,6 +312,7 @@ int iio_trigger_detach_poll_func(struct iio_trigger *trig,
irqreturn_t iio_pollfunc_store_time(int irq, void *p)
{
struct iio_poll_func *pf = p;
+
pf->timestamp = iio_get_time_ns(pf->indio_dev);
return IRQ_WAKE_THREAD;
}
@@ -375,7 +375,7 @@ static ssize_t iio_trigger_read_current(struct device *dev,
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
if (indio_dev->trig)
- return sprintf(buf, "%s\n", indio_dev->trig->name);
+ return sysfs_emit(buf, "%s\n", indio_dev->trig->name);
return 0;
}
@@ -499,23 +499,23 @@ static const struct device_type iio_trig_type = {
static void iio_trig_subirqmask(struct irq_data *d)
{
struct irq_chip *chip = irq_data_get_irq_chip(d);
- struct iio_trigger *trig
- = container_of(chip,
- struct iio_trigger, subirq_chip);
+ struct iio_trigger *trig = container_of(chip, struct iio_trigger, subirq_chip);
+
trig->subirqs[d->irq - trig->subirq_base].enabled = false;
}
static void iio_trig_subirqunmask(struct irq_data *d)
{
struct irq_chip *chip = irq_data_get_irq_chip(d);
- struct iio_trigger *trig
- = container_of(chip,
- struct iio_trigger, subirq_chip);
+ struct iio_trigger *trig = container_of(chip, struct iio_trigger, subirq_chip);
+
trig->subirqs[d->irq - trig->subirq_base].enabled = true;
}
-static __printf(1, 0)
-struct iio_trigger *viio_trigger_alloc(const char *fmt, va_list vargs)
+static __printf(2, 0)
+struct iio_trigger *viio_trigger_alloc(struct device *parent,
+ const char *fmt,
+ va_list vargs)
{
struct iio_trigger *trig;
int i;
@@ -524,6 +524,7 @@ struct iio_trigger *viio_trigger_alloc(const char *fmt, va_list vargs)
if (!trig)
return NULL;
+ trig->dev.parent = parent;
trig->dev.type = &iio_trig_type;
trig->dev.bus = &iio_bus_type;
device_initialize(&trig->dev);
@@ -559,13 +560,23 @@ free_trig:
return NULL;
}
-struct iio_trigger *iio_trigger_alloc(const char *fmt, ...)
+/**
+ * iio_trigger_alloc - Allocate a trigger
+ * @parent: Device to allocate iio_trigger for
+ * @fmt: trigger name format. If it includes format
+ * specifiers, the additional arguments following
+ * format are formatted and inserted in the resulting
+ * string replacing their respective specifiers.
+ * RETURNS:
+ * Pointer to allocated iio_trigger on success, NULL on failure.
+ */
+struct iio_trigger *iio_trigger_alloc(struct device *parent, const char *fmt, ...)
{
struct iio_trigger *trig;
va_list vargs;
va_start(vargs, fmt);
- trig = viio_trigger_alloc(fmt, vargs);
+ trig = viio_trigger_alloc(parent, fmt, vargs);
va_end(vargs);
return trig;
@@ -586,20 +597,19 @@ static void devm_iio_trigger_release(struct device *dev, void *res)
/**
* devm_iio_trigger_alloc - Resource-managed iio_trigger_alloc()
- * @dev: Device to allocate iio_trigger for
+ * Managed iio_trigger_alloc. iio_trigger allocated with this function is
+ * automatically freed on driver detach.
+ * @parent: Device to allocate iio_trigger for
* @fmt: trigger name format. If it includes format
* specifiers, the additional arguments following
* format are formatted and inserted in the resulting
* string replacing their respective specifiers.
*
- * Managed iio_trigger_alloc. iio_trigger allocated with this function is
- * automatically freed on driver detach.
*
* RETURNS:
* Pointer to allocated iio_trigger on success, NULL on failure.
*/
-struct iio_trigger *devm_iio_trigger_alloc(struct device *dev,
- const char *fmt, ...)
+struct iio_trigger *devm_iio_trigger_alloc(struct device *parent, const char *fmt, ...)
{
struct iio_trigger **ptr, *trig;
va_list vargs;
@@ -611,11 +621,11 @@ struct iio_trigger *devm_iio_trigger_alloc(struct device *dev,
/* use raw alloc_dr for kmalloc caller tracing */
va_start(vargs, fmt);
- trig = viio_trigger_alloc(fmt, vargs);
+ trig = viio_trigger_alloc(parent, fmt, vargs);
va_end(vargs);
if (trig) {
*ptr = trig;
- devres_add(dev, ptr);
+ devres_add(parent, ptr);
} else {
devres_free(ptr);
}
@@ -684,7 +694,7 @@ EXPORT_SYMBOL(iio_trigger_using_own);
* device, -EINVAL otherwise.
*/
int iio_trigger_validate_own_device(struct iio_trigger *trig,
- struct iio_dev *indio_dev)
+ struct iio_dev *indio_dev)
{
if (indio_dev->dev.parent != trig->dev.parent)
return -EINVAL;
@@ -692,10 +702,10 @@ int iio_trigger_validate_own_device(struct iio_trigger *trig,
}
EXPORT_SYMBOL(iio_trigger_validate_own_device);
-void iio_device_register_trigger_consumer(struct iio_dev *indio_dev)
+int iio_device_register_trigger_consumer(struct iio_dev *indio_dev)
{
- indio_dev->groups[indio_dev->groupcounter++] =
- &iio_trigger_consumer_attr_group;
+ return iio_device_register_sysfs_group(indio_dev,
+ &iio_trigger_consumer_attr_group);
}
void iio_device_unregister_trigger_consumer(struct iio_dev *indio_dev)
generated by cgit v1.2.3 (git 2.39.0) at 2024-08-04 15:38:15 +0300