iio: set default trig->dev.parent
When allocated with [devm_]iio_trigger_alloc(), set trig device parent to
the device the trigger is allocated for by default.
It can always be reassigned in the probe routine.
Change iio_trigger_alloc() API to add the device pointer to be coherent
with devm_iio_trigger_alloc, using similar interface to
iio_device_alloc().
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210309193620.2176163-2-gwendal@chromium.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
diff --git a/drivers/iio/accel/bma180.c b/drivers/iio/accel/bma180.c
index 71f85a3..b8a7469 100644
--- a/drivers/iio/accel/bma180.c
+++ b/drivers/iio/accel/bma180.c
@@ -1044,7 +1044,7 @@ static int bma180_probe(struct i2c_client *client,
indio_dev->info = &bma180_info;
if (client->irq > 0) {
- data->trig = iio_trigger_alloc("%s-dev%d", indio_dev->name,
+ data->trig = iio_trigger_alloc(dev, "%s-dev%d", indio_dev->name,
indio_dev->id);
if (!data->trig) {
ret = -ENOMEM;
@@ -1059,7 +1059,6 @@ static int bma180_probe(struct i2c_client *client,
goto err_trigger_free;
}
- data->trig->dev.parent = dev;
data->trig->ops = &bma180_trigger_ops;
iio_trigger_set_drvdata(data->trig, indio_dev);
indio_dev->trig = iio_trigger_get(data->trig);
diff --git a/drivers/iio/adc/ad_sigma_delta.c b/drivers/iio/adc/ad_sigma_delta.c
index 3a6f239..9289812 100644
--- a/drivers/iio/adc/ad_sigma_delta.c
+++ b/drivers/iio/adc/ad_sigma_delta.c
@@ -475,8 +475,9 @@ static int ad_sd_probe_trigger(struct iio_dev *indio_dev)
struct ad_sigma_delta *sigma_delta = iio_device_get_drvdata(indio_dev);
int ret;
- sigma_delta->trig = iio_trigger_alloc("%s-dev%d", indio_dev->name,
- indio_dev->id);
+ sigma_delta->trig = iio_trigger_alloc(&sigma_delta->spi->dev,
+ "%s-dev%d", indio_dev->name,
+ indio_dev->id);
if (sigma_delta->trig == NULL) {
ret = -ENOMEM;
goto error_ret;
@@ -496,7 +497,6 @@ static int ad_sd_probe_trigger(struct iio_dev *indio_dev)
sigma_delta->irq_dis = true;
disable_irq_nosync(sigma_delta->spi->irq);
}
- sigma_delta->trig->dev.parent = &sigma_delta->spi->dev;
iio_trigger_set_drvdata(sigma_delta->trig, sigma_delta);
ret = iio_trigger_register(sigma_delta->trig);
diff --git a/drivers/iio/adc/at91_adc.c b/drivers/iio/adc/at91_adc.c
index 70750ab..0b5f0c9 100644
--- a/drivers/iio/adc/at91_adc.c
+++ b/drivers/iio/adc/at91_adc.c
@@ -625,12 +625,11 @@ static struct iio_trigger *at91_adc_allocate_trigger(struct iio_dev *idev,
struct iio_trigger *trig;
int ret;
- trig = iio_trigger_alloc("%s-dev%d-%s", idev->name,
+ trig = iio_trigger_alloc(idev->dev.parent, "%s-dev%d-%s", idev->name,
idev->id, trigger->name);
if (trig == NULL)
return NULL;
- trig->dev.parent = idev->dev.parent;
iio_trigger_set_drvdata(trig, idev);
trig->ops = &at91_adc_trigger_ops;
diff --git a/drivers/iio/common/hid-sensors/hid-sensor-trigger.c b/drivers/iio/common/hid-sensors/hid-sensor-trigger.c
index 064c32be..95ddccb 100644
--- a/drivers/iio/common/hid-sensors/hid-sensor-trigger.c
+++ b/drivers/iio/common/hid-sensors/hid-sensor-trigger.c
@@ -255,14 +255,14 @@ int hid_sensor_setup_trigger(struct iio_dev *indio_dev, const char *name,
return ret;
}
- trig = iio_trigger_alloc("%s-dev%d", name, indio_dev->id);
+ trig = iio_trigger_alloc(indio_dev->dev.parent,
+ "%s-dev%d", name, indio_dev->id);
if (trig == NULL) {
dev_err(&indio_dev->dev, "Trigger Allocate Failed\n");
ret = -ENOMEM;
goto error_triggered_buffer_cleanup;
}
- trig->dev.parent = indio_dev->dev.parent;
iio_trigger_set_drvdata(trig, attrb);
trig->ops = &hid_sensor_trigger_ops;
ret = iio_trigger_register(trig);
diff --git a/drivers/iio/common/st_sensors/st_sensors_trigger.c b/drivers/iio/common/st_sensors/st_sensors_trigger.c
index 2dbd264..0b51166 100644
--- a/drivers/iio/common/st_sensors/st_sensors_trigger.c
+++ b/drivers/iio/common/st_sensors/st_sensors_trigger.c
@@ -123,7 +123,8 @@ int st_sensors_allocate_trigger(struct iio_dev *indio_dev,
unsigned long irq_trig;
int err;
- sdata->trig = iio_trigger_alloc("%s-trigger", indio_dev->name);
+ sdata->trig = iio_trigger_alloc(sdata->dev, "%s-trigger",
+ indio_dev->name);
if (sdata->trig == NULL) {
dev_err(&indio_dev->dev, "failed to allocate iio trigger.\n");
return -ENOMEM;
@@ -131,7 +132,6 @@ int st_sensors_allocate_trigger(struct iio_dev *indio_dev,
iio_trigger_set_drvdata(sdata->trig, indio_dev);
sdata->trig->ops = trigger_ops;
- sdata->trig->dev.parent = sdata->dev;
irq_trig = irqd_get_trigger_type(irq_get_irq_data(sdata->irq));
/*
diff --git a/drivers/iio/gyro/itg3200_buffer.c b/drivers/iio/gyro/itg3200_buffer.c
index 1c3c1bd..af0aaa1 100644
--- a/drivers/iio/gyro/itg3200_buffer.c
+++ b/drivers/iio/gyro/itg3200_buffer.c
@@ -113,7 +113,7 @@ int itg3200_probe_trigger(struct iio_dev *indio_dev)
int ret;
struct itg3200 *st = iio_priv(indio_dev);
- st->trig = iio_trigger_alloc("%s-dev%d", indio_dev->name,
+ st->trig = iio_trigger_alloc(&st->i2c->dev, "%s-dev%d", indio_dev->name,
indio_dev->id);
if (!st->trig)
return -ENOMEM;
@@ -127,7 +127,6 @@ int itg3200_probe_trigger(struct iio_dev *indio_dev)
goto error_free_trig;
- st->trig->dev.parent = &st->i2c->dev;
st->trig->ops = &itg3200_trigger_ops;
iio_trigger_set_drvdata(st->trig, indio_dev);
ret = iio_trigger_register(st->trig);
diff --git a/drivers/iio/industrialio-trigger.c b/drivers/iio/industrialio-trigger.c
index a035d5c2a..32ac1be 100644
--- a/drivers/iio/industrialio-trigger.c
+++ b/drivers/iio/industrialio-trigger.c
@@ -514,8 +514,10 @@ static void iio_trig_subirqunmask(struct irq_data *d)
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 +526,7 @@ 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 +562,23 @@ struct iio_trigger *viio_trigger_alloc(const char *fmt, va_list vargs)
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 +599,19 @@ 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 +623,11 @@ 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);
}
diff --git a/drivers/iio/trigger/iio-trig-hrtimer.c b/drivers/iio/trigger/iio-trig-hrtimer.c
index e68a2c5..51e362f 100644
--- a/drivers/iio/trigger/iio-trig-hrtimer.c
+++ b/drivers/iio/trigger/iio-trig-hrtimer.c
@@ -135,7 +135,7 @@ static struct iio_sw_trigger *iio_trig_hrtimer_probe(const char *name)
if (!trig_info)
return ERR_PTR(-ENOMEM);
- trig_info->swt.trigger = iio_trigger_alloc("%s", name);
+ trig_info->swt.trigger = iio_trigger_alloc(NULL, "%s", name);
if (!trig_info->swt.trigger) {
ret = -ENOMEM;
goto err_free_trig_info;
diff --git a/drivers/iio/trigger/iio-trig-interrupt.c b/drivers/iio/trigger/iio-trig-interrupt.c
index 94a487c..f746c46 100644
--- a/drivers/iio/trigger/iio-trig-interrupt.c
+++ b/drivers/iio/trigger/iio-trig-interrupt.c
@@ -45,7 +45,7 @@ static int iio_interrupt_trigger_probe(struct platform_device *pdev)
irq = irq_res->start;
- trig = iio_trigger_alloc("irqtrig%d", irq);
+ trig = iio_trigger_alloc(NULL, "irqtrig%d", irq);
if (!trig) {
ret = -ENOMEM;
goto error_ret;
diff --git a/drivers/iio/trigger/iio-trig-loop.c b/drivers/iio/trigger/iio-trig-loop.c
index 4a00668..96ec06b 100644
--- a/drivers/iio/trigger/iio-trig-loop.c
+++ b/drivers/iio/trigger/iio-trig-loop.c
@@ -84,7 +84,7 @@ static struct iio_sw_trigger *iio_trig_loop_probe(const char *name)
if (!trig_info)
return ERR_PTR(-ENOMEM);
- trig_info->swt.trigger = iio_trigger_alloc("%s", name);
+ trig_info->swt.trigger = iio_trigger_alloc(NULL, "%s", name);
if (!trig_info->swt.trigger) {
ret = -ENOMEM;
goto err_free_trig_info;
diff --git a/drivers/iio/trigger/iio-trig-sysfs.c b/drivers/iio/trigger/iio-trig-sysfs.c
index 0f6b512..e9adfff 100644
--- a/drivers/iio/trigger/iio-trig-sysfs.c
+++ b/drivers/iio/trigger/iio-trig-sysfs.c
@@ -149,7 +149,7 @@ static int iio_sysfs_trigger_probe(int id)
goto out1;
}
t->id = id;
- t->trig = iio_trigger_alloc("sysfstrig%d", id);
+ t->trig = iio_trigger_alloc(&iio_sysfs_trig_dev, "sysfstrig%d", id);
if (!t->trig) {
ret = -ENOMEM;
goto free_t;
@@ -157,7 +157,6 @@ static int iio_sysfs_trigger_probe(int id)
t->trig->dev.groups = iio_sysfs_trigger_attr_groups;
t->trig->ops = &iio_sysfs_trigger_ops;
- t->trig->dev.parent = &iio_sysfs_trig_dev;
iio_trigger_set_drvdata(t->trig, t);
t->work = IRQ_WORK_INIT_HARD(iio_sysfs_trigger_work);
