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staging:iio:trigger handle name attr in core, remove old alloc and register any control_attrs via struct device

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As the majority of triggers don't actually have any other control_attrs lets use the fact
that struct device has a groups element when we do need to have these attributes registered.
A vargs function is used to cut down on lots of building strings in every single driver
just in order to pass them into the allocate.

Also iio_allocate_trigger_named -> iio_allocate_trigger as there is no
unamed version any more, so that is now just confusing.

Blackfin tested and fixed by Michael Hennerich.

V2: Elements from Michael Hennerich's patches for the ade7758

Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Jonathan Cameron 2011-05-18 14:42:22 +01:00 committed by Greg Kroah-Hartman
parent 3b8ebfb47f
commit 59c85e82c2
15 changed files with 110 additions and 356 deletions
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27
drivers/staging/iio/accel/adis16201_trigger.c
View File

@ -11,17 +11,6 @@
#include "../trigger.h"
#include "adis16201.h"
static DEVICE_ATTR(name, S_IRUGO, iio_trigger_read_name, NULL);
static struct attribute *adis16201_trigger_attrs[] = {
&dev_attr_name.attr,
NULL,
};
static const struct attribute_group adis16201_trigger_attr_group = {
.attrs = adis16201_trigger_attrs,
};
/**
* adis16201_data_rdy_trigger_set_state() set datardy interrupt state
**/
@ -39,19 +28,11 @@ int adis16201_probe_trigger(struct iio_dev *indio_dev)
{
int ret;
struct adis16201_state *st = indio_dev->dev_data;
char *name;
name = kasprintf(GFP_KERNEL,
"adis16201-dev%d",
indio_dev->id);
if (name == NULL) {
ret = -ENOMEM;
goto error_ret;
}
st->trig = iio_allocate_trigger_named(name);
st->trig = iio_allocate_trigger("adis16201-dev%d", indio_dev->id);
if (st->trig == NULL) {
ret = -ENOMEM;
goto error_free_name;
goto error_ret;
}
ret = request_irq(st->us->irq,
&iio_trigger_generic_data_rdy_poll,
@ -64,7 +45,6 @@ int adis16201_probe_trigger(struct iio_dev *indio_dev)
st->trig->owner = THIS_MODULE;
st->trig->private_data = st;
st->trig->set_trigger_state = &adis16201_data_rdy_trigger_set_state;
st->trig->control_attrs = &adis16201_trigger_attr_group;
ret = iio_trigger_register(st->trig);
/* select default trigger */
@ -78,8 +58,6 @@ error_free_irq:
free_irq(st->us->irq, st->trig);
error_free_trig:
iio_free_trigger(st->trig);
error_free_name:
kfree(name);
error_ret:
return ret;
}
@ -89,7 +67,6 @@ void adis16201_remove_trigger(struct iio_dev *indio_dev)
struct adis16201_state *state = indio_dev->dev_data;
iio_trigger_unregister(state->trig);
kfree(state->trig->name);
free_irq(state->us->irq, state->trig);
iio_free_trigger(state->trig);
}

28
drivers/staging/iio/accel/adis16203_trigger.c
View File

@ -12,17 +12,6 @@
#include "../trigger.h"
#include "adis16203.h"
static DEVICE_ATTR(name, S_IRUGO, iio_trigger_read_name, NULL);
static struct attribute *adis16203_trigger_attrs[] = {
&dev_attr_name.attr,
NULL,
};
static const struct attribute_group adis16203_trigger_attr_group = {
.attrs = adis16203_trigger_attrs,
};
/**
* adis16203_data_rdy_trigger_set_state() set datardy interrupt state
**/
@ -40,20 +29,11 @@ int adis16203_probe_trigger(struct iio_dev *indio_dev)
{
int ret;
struct adis16203_state *st = indio_dev->dev_data;
char *name;
name = kasprintf(GFP_KERNEL,
"adis16203-dev%d",
indio_dev->id);
if (name == NULL) {
ret = -ENOMEM;
goto error_ret;
}
st->trig = iio_allocate_trigger_named(name);
st->trig = iio_allocate_trigger("adis16203-dev%d", indio_dev->id);
if (st->trig == NULL) {
ret = -ENOMEM;
goto error_free_name;
goto error_ret;
}
ret = request_irq(st->us->irq,
@ -68,7 +48,6 @@ int adis16203_probe_trigger(struct iio_dev *indio_dev)
st->trig->owner = THIS_MODULE;
st->trig->private_data = st;
st->trig->set_trigger_state = &adis16203_data_rdy_trigger_set_state;
st->trig->control_attrs = &adis16203_trigger_attr_group;
ret = iio_trigger_register(st->trig);
/* select default trigger */
@ -82,8 +61,6 @@ error_free_irq:
free_irq(st->us->irq, st->trig);
error_free_trig:
iio_free_trigger(st->trig);
error_free_name:
kfree(name);
error_ret:
return ret;
}
@ -93,7 +70,6 @@ void adis16203_remove_trigger(struct iio_dev *indio_dev)
struct adis16203_state *state = indio_dev->dev_data;
iio_trigger_unregister(state->trig);
kfree(state->trig->name);
free_irq(state->us->irq, state->trig);
iio_free_trigger(state->trig);
}

28
drivers/staging/iio/accel/adis16204_trigger.c
View File

@ -12,17 +12,6 @@
#include "../trigger.h"
#include "adis16204.h"
static DEVICE_ATTR(name, S_IRUGO, iio_trigger_read_name, NULL);
static struct attribute *adis16204_trigger_attrs[] = {
&dev_attr_name.attr,
NULL,
};
static const struct attribute_group adis16204_trigger_attr_group = {
.attrs = adis16204_trigger_attrs,
};
/**
* adis16204_data_rdy_trigger_set_state() set datardy interrupt state
**/
@ -40,20 +29,11 @@ int adis16204_probe_trigger(struct iio_dev *indio_dev)
{
int ret;
struct adis16204_state *st = indio_dev->dev_data;
char *name;
name = kasprintf(GFP_KERNEL,
"adis16204-dev%d",
indio_dev->id);
if (name == NULL) {
ret = -ENOMEM;
goto error_ret;
}
st->trig = iio_allocate_trigger_named(name);
st->trig = iio_allocate_trigger("adis16204-dev%d", indio_dev->id);
if (st->trig == NULL) {
ret = -ENOMEM;
goto error_free_name;
goto error_ret;
}
ret = request_irq(st->us->irq,
@ -68,7 +48,6 @@ int adis16204_probe_trigger(struct iio_dev *indio_dev)
st->trig->owner = THIS_MODULE;
st->trig->private_data = st;
st->trig->set_trigger_state = &adis16204_data_rdy_trigger_set_state;
st->trig->control_attrs = &adis16204_trigger_attr_group;
ret = iio_trigger_register(st->trig);
/* select default trigger */
@ -82,8 +61,6 @@ error_free_irq:
free_irq(st->us->irq, st->trig);
error_free_trig:
iio_free_trigger(st->trig);
error_free_name:
kfree(name);
error_ret:
return ret;
}
@ -93,7 +70,6 @@ void adis16204_remove_trigger(struct iio_dev *indio_dev)
struct adis16204_state *state = indio_dev->dev_data;
iio_trigger_unregister(state->trig);
kfree(state->trig->name);
free_irq(state->us->irq, state->trig);
iio_free_trigger(state->trig);
}

28
drivers/staging/iio/accel/adis16209_trigger.c
View File

@ -21,17 +21,6 @@ static irqreturn_t adis16209_data_rdy_trig_poll(int irq, void *trig)
return IRQ_HANDLED;
}
static IIO_TRIGGER_NAME_ATTR;
static struct attribute *adis16209_trigger_attrs[] = {
&dev_attr_name.attr,
NULL,
};
static const struct attribute_group adis16209_trigger_attr_group = {
.attrs = adis16209_trigger_attrs,
};
/**
* adis16209_data_rdy_trigger_set_state() set datardy interrupt state
**/
@ -49,20 +38,11 @@ int adis16209_probe_trigger(struct iio_dev *indio_dev)
{
int ret;
struct adis16209_state *st = indio_dev->dev_data;
char *name;
name = kasprintf(GFP_KERNEL,
"adis16209-dev%d",
indio_dev->id);
if (name == NULL) {
ret = -ENOMEM;
goto error_ret;
}
st->trig = iio_allocate_trigger_named(name);
st->trig = iio_allocate_trigger("adis16209-dev%d", indio_dev->id);
if (st->trig == NULL) {
ret = -ENOMEM;
goto error_free_name;
goto error_ret;
}
ret = request_irq(st->us->irq,
@ -76,7 +56,6 @@ int adis16209_probe_trigger(struct iio_dev *indio_dev)
st->trig->owner = THIS_MODULE;
st->trig->private_data = st;
st->trig->set_trigger_state = &adis16209_data_rdy_trigger_set_state;
st->trig->control_attrs = &adis16209_trigger_attr_group;
ret = iio_trigger_register(st->trig);
/* select default trigger */
@ -90,8 +69,6 @@ error_free_irq:
free_irq(st->us->irq, st->trig);
error_free_trig:
iio_free_trigger(st->trig);
error_free_name:
kfree(name);
error_ret:
return ret;
}
@ -101,7 +78,6 @@ void adis16209_remove_trigger(struct iio_dev *indio_dev)
struct adis16209_state *state = indio_dev->dev_data;
iio_trigger_unregister(state->trig);
kfree(state->trig->name);
free_irq(state->us->irq, state->trig);
iio_free_trigger(state->trig);
}

25
drivers/staging/iio/accel/adis16240_trigger.c
View File

@ -21,17 +21,6 @@ static irqreturn_t adis16240_data_rdy_trig_poll(int irq, void *trig)
return IRQ_HANDLED;
}
static IIO_TRIGGER_NAME_ATTR;
static struct attribute *adis16240_trigger_attrs[] = {
&dev_attr_name.attr,
NULL,
};
static const struct attribute_group adis16240_trigger_attr_group = {
.attrs = adis16240_trigger_attrs,
};
/**
* adis16240_data_rdy_trigger_set_state() set datardy interrupt state
**/
@ -49,17 +38,11 @@ int adis16240_probe_trigger(struct iio_dev *indio_dev)
{
int ret;
struct adis16240_state *st = indio_dev->dev_data;
char *name;
name = kasprintf(GFP_KERNEL, "adis16240-dev%d", indio_dev->id);
if (name == NULL) {
ret = -ENOMEM;
goto error_ret;
}
st->trig = iio_allocate_trigger_named(name);
st->trig = iio_allocate_trigger("adis16240-dev%d", indio_dev->id);
if (st->trig == NULL) {
ret = -ENOMEM;
goto error_free_name;
goto error_ret;
}
ret = request_irq(st->us->irq,
@ -74,7 +57,6 @@ int adis16240_probe_trigger(struct iio_dev *indio_dev)
st->trig->owner = THIS_MODULE;
st->trig->private_data = st;
st->trig->set_trigger_state = &adis16240_data_rdy_trigger_set_state;
st->trig->control_attrs = &adis16240_trigger_attr_group;
ret = iio_trigger_register(st->trig);
/* select default trigger */
@ -88,8 +70,6 @@ error_free_irq:
free_irq(st->us->irq, st->trig);
error_free_trig:
iio_free_trigger(st->trig);
error_free_name:
kfree(name);
error_ret:
return ret;
}
@ -99,7 +79,6 @@ void adis16240_remove_trigger(struct iio_dev *indio_dev)
struct adis16240_state *state = indio_dev->dev_data;
iio_trigger_unregister(state->trig);
kfree(state->trig->name);
free_irq(state->us->irq, state->trig);
iio_free_trigger(state->trig);
}

27
drivers/staging/iio/accel/lis3l02dq_ring.c
View File

@ -260,17 +260,6 @@ static int lis3l02dq_data_rdy_trigger_set_state(struct iio_trigger *trig,
return ret;
}
static IIO_TRIGGER_NAME_ATTR;
static struct attribute *lis3l02dq_trigger_attrs[] = {
&dev_attr_name.attr,
NULL,
};
static const struct attribute_group lis3l02dq_trigger_attr_group = {
.attrs = lis3l02dq_trigger_attrs,
};
/**
* lis3l02dq_trig_try_reen() try renabling irq for data rdy trigger
* @trig: the datardy trigger
@ -301,19 +290,11 @@ int lis3l02dq_probe_trigger(struct iio_dev *indio_dev)
struct iio_sw_ring_helper_state *h
= iio_dev_get_devdata(indio_dev);
struct lis3l02dq_state *st = lis3l02dq_h_to_s(h);
char *name;
name = kasprintf(GFP_KERNEL,
"lis3l02dq-dev%d",
indio_dev->id);
if (name == NULL) {
ret = -ENOMEM;
goto error_ret;
}
st->trig = iio_allocate_trigger_named(name);
st->trig = iio_allocate_trigger("lis3l02dq-dev%d", indio_dev->id);
if (!st->trig) {
ret = -ENOMEM;
goto error_free_name;
goto error_ret;
}
st->trig->dev.parent = &st->us->dev;
@ -321,7 +302,6 @@ int lis3l02dq_probe_trigger(struct iio_dev *indio_dev)
st->trig->private_data = st;
st->trig->set_trigger_state = &lis3l02dq_data_rdy_trigger_set_state;
st->trig->try_reenable = &lis3l02dq_trig_try_reen;
st->trig->control_attrs = &lis3l02dq_trigger_attr_group;
ret = iio_trigger_register(st->trig);
if (ret)
goto error_free_trig;
@ -330,8 +310,6 @@ int lis3l02dq_probe_trigger(struct iio_dev *indio_dev)
error_free_trig:
iio_free_trigger(st->trig);
error_free_name:
kfree(name);
error_ret:
return ret;
}
@ -343,7 +321,6 @@ void lis3l02dq_remove_trigger(struct iio_dev *indio_dev)
struct lis3l02dq_state *st = lis3l02dq_h_to_s(h);
iio_trigger_unregister(st->trig);
kfree(st->trig->name);
iio_free_trigger(st->trig);
}

28
drivers/staging/iio/gyro/adis16260_trigger.c
View File

@ -12,17 +12,6 @@
#include "../trigger.h"
#include "adis16260.h"
static IIO_TRIGGER_NAME_ATTR;
static struct attribute *adis16260_trigger_attrs[] = {
&dev_attr_name.attr,
NULL,
};
static const struct attribute_group adis16260_trigger_attr_group = {
.attrs = adis16260_trigger_attrs,
};
/**
* adis16260_data_rdy_trigger_set_state() set datardy interrupt state
**/
@ -40,20 +29,13 @@ int adis16260_probe_trigger(struct iio_dev *indio_dev)
{
int ret;
struct adis16260_state *st = indio_dev->dev_data;
char *name;
name = kasprintf(GFP_KERNEL,
"%s-dev%d",
st->trig = iio_allocate_trigger("%s-dev%d",
spi_get_device_id(st->us)->name,
indio_dev->id);
if (name == NULL) {
ret = -ENOMEM;
goto error_ret;
}
st->trig = iio_allocate_trigger_named(name);
if (st->trig == NULL) {
ret = -ENOMEM;
goto error_free_name;
goto error_ret;
}
ret = request_irq(st->us->irq,
@ -68,7 +50,6 @@ int adis16260_probe_trigger(struct iio_dev *indio_dev)
st->trig->owner = THIS_MODULE;
st->trig->private_data = st;
st->trig->set_trigger_state = &adis16260_data_rdy_trigger_set_state;
st->trig->control_attrs = &adis16260_trigger_attr_group;
ret = iio_trigger_register(st->trig);
/* select default trigger */
@ -82,8 +63,6 @@ error_free_irq:
free_irq(st->us->irq, st->trig);
error_free_trig:
iio_free_trigger(st->trig);
error_free_name:
kfree(name);
error_ret:
return ret;
}
@ -93,7 +72,6 @@ void adis16260_remove_trigger(struct iio_dev *indio_dev)
struct adis16260_state *state = indio_dev->dev_data;
iio_trigger_unregister(state->trig);
kfree(state->trig->name);
free_irq(state->us->irq, state->trig);
iio_free_trigger(state->trig);
}

27
drivers/staging/iio/imu/adis16400_trigger.c
View File

@ -12,17 +12,6 @@
#include "../trigger.h"
#include "adis16400.h"
static IIO_TRIGGER_NAME_ATTR;
static struct attribute *adis16400_trigger_attrs[] = {
&dev_attr_name.attr,
NULL,
};
static const struct attribute_group adis16400_trigger_attr_group = {
.attrs = adis16400_trigger_attrs,
};
/**
* adis16400_data_rdy_trigger_set_state() set datardy interrupt state
**/
@ -40,21 +29,13 @@ int adis16400_probe_trigger(struct iio_dev *indio_dev)
{
int ret;
struct adis16400_state *st = indio_dev->dev_data;
char *name;
name = kasprintf(GFP_KERNEL,
"%s-dev%d",
st->trig = iio_allocate_trigger("%s-dev%d",
spi_get_device_id(st->us)->name,
indio_dev->id);
if (name == NULL) {
ret = -ENOMEM;
goto error_ret;
}
st->trig = iio_allocate_trigger_named(name);
if (st->trig == NULL) {
ret = -ENOMEM;
goto error_free_name;
goto error_ret;
}
ret = request_irq(st->us->irq,
@ -68,7 +49,6 @@ int adis16400_probe_trigger(struct iio_dev *indio_dev)
st->trig->owner = THIS_MODULE;
st->trig->private_data = st;
st->trig->set_trigger_state = &adis16400_data_rdy_trigger_set_state;
st->trig->control_attrs = &adis16400_trigger_attr_group;
ret = iio_trigger_register(st->trig);
/* select default trigger */
@ -82,8 +62,6 @@ error_free_irq:
free_irq(st->us->irq, st->trig);
error_free_trig:
iio_free_trigger(st->trig);
error_free_name:
kfree(name);
error_ret:
return ret;
}
@ -93,7 +71,6 @@ void adis16400_remove_trigger(struct iio_dev *indio_dev)
struct adis16400_state *state = indio_dev->dev_data;
iio_trigger_unregister(state->trig);
kfree(state->trig->name);
free_irq(state->us->irq, state->trig);
iio_free_trigger(state->trig);
}

65
drivers/staging/iio/industrialio-trigger.c
View File

@ -38,6 +38,19 @@ static DEFINE_SPINLOCK(iio_trigger_idr_lock);
static LIST_HEAD(iio_trigger_list);
static DEFINE_MUTEX(iio_trigger_list_lock);
/**
* iio_trigger_read_name() - retrieve useful identifying name
**/
static ssize_t iio_trigger_read_name(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct iio_trigger *trig = dev_get_drvdata(dev);
return sprintf(buf, "%s\n", trig->name);
}
static DEVICE_ATTR(name, S_IRUGO, iio_trigger_read_name, NULL);
/**
* iio_trigger_register_sysfs() - create a device for this trigger
* @trig_info: the trigger
@ -46,20 +59,16 @@ static DEFINE_MUTEX(iio_trigger_list_lock);
**/
static int iio_trigger_register_sysfs(struct iio_trigger *trig_info)
{
int ret = 0;
if (trig_info->control_attrs)
ret = sysfs_create_group(&trig_info->dev.kobj,
trig_info->control_attrs);
return ret;
return sysfs_add_file_to_group(&trig_info->dev.kobj,
&dev_attr_name.attr,
NULL);
}
static void iio_trigger_unregister_sysfs(struct iio_trigger *trig_info)
{
if (trig_info->control_attrs)
sysfs_remove_group(&trig_info->dev.kobj,
trig_info->control_attrs);
sysfs_remove_file_from_group(&trig_info->dev.kobj,
&dev_attr_name.attr,
NULL);
}
@ -205,18 +214,6 @@ void iio_trigger_notify_done(struct iio_trigger *trig)
}
EXPORT_SYMBOL(iio_trigger_notify_done);
/**
* iio_trigger_read_name() - retrieve useful identifying name
**/
ssize_t iio_trigger_read_name(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct iio_trigger *trig = dev_get_drvdata(dev);
return sprintf(buf, "%s\n", trig->name);
}
EXPORT_SYMBOL(iio_trigger_read_name);
/* Trigger Consumer related functions */
/* Complexity in here. With certain triggers (datardy) an acknowledgement
@ -355,6 +352,7 @@ static void iio_trig_release(struct device *device)
irq_free_descs(trig->subirq_base,
CONFIG_IIO_CONSUMERS_PER_TRIGGER);
}
kfree(trig->name);
kfree(trig);
iio_put();
}
@ -381,8 +379,9 @@ static void iio_trig_subirqunmask(struct irq_data *d)
trig->subirqs[d->irq - trig->subirq_base].enabled = true;
}
struct iio_trigger *iio_allocate_trigger_named(const char *name)
struct iio_trigger *iio_allocate_trigger(const char *fmt, ...)
{
va_list vargs;
struct iio_trigger *trig;
trig = kzalloc(sizeof *trig, GFP_KERNEL);
if (trig) {
@ -392,7 +391,6 @@ struct iio_trigger *iio_allocate_trigger_named(const char *name)
device_initialize(&trig->dev);
dev_set_drvdata(&trig->dev, (void *)trig);
if (name) {
mutex_init(&trig->pool_lock);
trig->subirq_base
= irq_alloc_descs(-1, 0,
@ -402,8 +400,16 @@ struct iio_trigger *iio_allocate_trigger_named(const char *name)
kfree(trig);
return NULL;
}
trig->name = name;
trig->subirq_chip.name = name;
va_start(vargs, fmt);
trig->name = kvasprintf(GFP_KERNEL, fmt, vargs);
va_end(vargs);
if (trig->name == NULL) {
irq_free_descs(trig->subirq_base,
CONFIG_IIO_CONSUMERS_PER_TRIGGER);
kfree(trig);
return NULL;
}
trig->subirq_chip.name = trig->name;
trig->subirq_chip.irq_mask = &iio_trig_subirqmask;
trig->subirq_chip.irq_unmask = &iio_trig_subirqunmask;
for (i = 0; i < CONFIG_IIO_CONSUMERS_PER_TRIGGER; i++) {
@ -415,17 +421,10 @@ struct iio_trigger *iio_allocate_trigger_named(const char *name)
IRQ_NOREQUEST | IRQ_NOAUTOEN,
IRQ_NOPROBE);
}
}
iio_get();
}
return trig;
}
EXPORT_SYMBOL(iio_allocate_trigger_named);
struct iio_trigger *iio_allocate_trigger(void)
{
return iio_allocate_trigger_named(NULL);
}
EXPORT_SYMBOL(iio_allocate_trigger);
void iio_free_trigger(struct iio_trigger *trig)

15
drivers/staging/iio/meter/ade7758_trigger.c
View File

@ -61,21 +61,13 @@ int ade7758_probe_trigger(struct iio_dev *indio_dev)
{
int ret;
struct ade7758_state *st = indio_dev->dev_data;
char *name;
name = kasprintf(GFP_KERNEL,
"%s-dev%d",
st->trig = iio_allocate_trigger("%s-dev%d",
spi_get_device_id(st->us)->name,
indio_dev->id);
if (name == NULL) {
ret = -ENOMEM;
goto error_ret;
}
st->trig = iio_allocate_trigger_named(name);
if (st->trig == NULL) {
ret = -ENOMEM;
goto error_free_name;
goto error_ret;
}
ret = request_irq(st->us->irq,
@ -104,8 +96,6 @@ error_free_irq:
free_irq(st->us->irq, st->trig);
error_free_trig:
iio_free_trigger(st->trig);
error_free_name:
kfree(name);
error_ret:
return ret;
}
@ -115,7 +105,6 @@ void ade7758_remove_trigger(struct iio_dev *indio_dev)
struct ade7758_state *state = indio_dev->dev_data;
iio_trigger_unregister(state->trig);
kfree(state->trig->name);
free_irq(state->us->irq, state->trig);
iio_free_trigger(state->trig);
}

26
drivers/staging/iio/trigger.h
View File

@ -24,12 +24,16 @@ struct iio_subirq {
* @private_data: [DRIVER] device specific data
* @list: [INTERN] used in maintenance of global trigger list
* @alloc_list: [DRIVER] used for driver specific trigger list
* @control_attrs: [DRIVER] sysfs attributes relevant to trigger type
* @owner: [DRIVER] used to monitor usage count of the trigger.
* @use_count: use count for the trigger
* @set_trigger_state: [DRIVER] switch on/off the trigger on demand
* @try_reenable: function to reenable the trigger when the
* use count is zero (may be NULL)
* @subirq_chip: [INTERN] associate 'virtual' irq chip.
* @subirq_base: [INTERN] base number for irqs provided by trigger.
* @subirqs: [INTERN] information about the 'child' irqs.
* @pool: [INTERN] bitmap of irqs currently in use.
* @pool_lock: [INTERN] protection of the irq pool.
**/
struct iio_trigger {
int id;
@ -39,7 +43,6 @@ struct iio_trigger {
void *private_data;
struct list_head list;
struct list_head alloc_list;
const struct attribute_group *control_attrs;
struct module *owner;
int use_count;
@ -71,20 +74,6 @@ static inline void iio_get_trigger(struct iio_trigger *trig)
get_device(&trig->dev);
};
/**
* iio_trigger_read_name() - sysfs access function to get the trigger name
* @dev: the system device
* @attr: device attributes for the device
* @buf: output buffer to store the trigger name
**/
ssize_t iio_trigger_read_name(struct device *dev,
struct device_attribute *attr,
char *buf);
#define IIO_TRIGGER_NAME_ATTR DEVICE_ATTR(name, S_IRUGO, \
iio_trigger_read_name, \
NULL);
/**
* iio_trigger_register() - register a trigger with the IIO core
* @trig_info: trigger to be registered
@ -154,6 +143,7 @@ static inline void iio_trigger_put_irq(struct iio_trigger *trig, int irq)
* @h: the function that is actually run on trigger
* @thread: threaded interrupt part
* @type: the type of interrupt (basically if oneshot)
* @name: name used to identify the trigger consumer.
* @irq: the corresponding irq as allocated from the
* trigger pool
* @timestamp: some devices need a timestamp grabbed as soon
@ -179,8 +169,8 @@ irqreturn_t iio_pollfunc_store_time(int irq, void *p);
int iio_triggered_ring_postenable(struct iio_dev *indio_dev);
int iio_triggered_ring_predisable(struct iio_dev *indio_dev);
struct iio_trigger *iio_allocate_trigger(void);
struct iio_trigger *iio_allocate_trigger_named(const char *name);
struct iio_trigger *iio_allocate_trigger(const char *fmt, ...)
__attribute__((format(printf, 1, 2)));
void iio_free_trigger(struct iio_trigger *trig);
#endif /* _IIO_TRIGGER_H_ */

22
drivers/staging/iio/trigger/iio-trig-bfin-timer.c
View File

@ -106,11 +106,9 @@ static ssize_t iio_bfin_tmr_frequency_show(struct device *dev,
static DEVICE_ATTR(frequency, S_IRUGO | S_IWUSR, iio_bfin_tmr_frequency_show,
iio_bfin_tmr_frequency_store);
static IIO_TRIGGER_NAME_ATTR;
static struct attribute *iio_bfin_tmr_trigger_attrs[] = {
&dev_attr_frequency.attr,
&dev_attr_name.attr,
NULL,
};
@ -118,6 +116,11 @@ static const struct attribute_group iio_bfin_tmr_trigger_attr_group = {
.attrs = iio_bfin_tmr_trigger_attrs,
};
static const struct attribute_group *iio_bfin_tmr_trigger_attr_groups[] = {
&iio_bfin_tmr_trigger_attr_group,
NULL
};
static irqreturn_t iio_bfin_tmr_trigger_isr(int irq, void *devid)
{
@ -165,24 +168,18 @@ static int __devinit iio_bfin_tmr_trigger_probe(struct platform_device *pdev)
st->timer_num = ret;
st->t = &iio_bfin_timer_code[st->timer_num];
st->trig = iio_allocate_trigger();
st->trig = iio_allocate_trigger("bfintmr%d", st->timer_num);
if (!st->trig) {
ret = -ENOMEM;
goto out1;
}
st->trig->private_data = st;
st->trig->control_attrs = &iio_bfin_tmr_trigger_attr_group;
st->trig->owner = THIS_MODULE;
st->trig->name = kasprintf(GFP_KERNEL, "bfintmr%d", st->timer_num);
if (st->trig->name == NULL) {
ret = -ENOMEM;
goto out2;
}
st->trig->dev.groups = iio_bfin_tmr_trigger_attr_groups;
ret = iio_trigger_register(st->trig);
if (ret)
goto out3;
goto out2;
ret = request_irq(st->irq, iio_bfin_tmr_trigger_isr,
0, st->trig->name, st);
@ -201,8 +198,6 @@ static int __devinit iio_bfin_tmr_trigger_probe(struct platform_device *pdev)
return 0;
out4:
iio_trigger_unregister(st->trig);
out3:
kfree(st->trig->name);
out2:
iio_put_trigger(st->trig);
out1:
@ -218,7 +213,6 @@ static int __devexit iio_bfin_tmr_trigger_remove(struct platform_device *pdev)
disable_gptimers(st->t->bit);
free_irq(st->irq, st);
iio_trigger_unregister(st->trig);
kfree(st->trig->name);
iio_put_trigger(st->trig);
kfree(st);

25
drivers/staging/iio/trigger/iio-trig-gpio.c
View File

@ -47,17 +47,6 @@ static irqreturn_t iio_gpio_trigger_poll(int irq, void *private)
return IRQ_HANDLED;
}
static IIO_TRIGGER_NAME_ATTR;
static struct attribute *iio_gpio_trigger_attrs[] = {
&dev_attr_name.attr,
NULL,
};
static const struct attribute_group iio_gpio_trigger_attr_group = {
.attrs = iio_gpio_trigger_attrs,
};
static int iio_gpio_trigger_probe(struct platform_device *pdev)
{
struct iio_gpio_trigger_info *trig_info;
@ -79,7 +68,7 @@ static int iio_gpio_trigger_probe(struct platform_device *pdev)
for (irq = irq_res->start; irq <= irq_res->end; irq++) {
trig = iio_allocate_trigger();
trig = iio_allocate_trigger("irqtrig%d", irq);
if (!trig) {
ret = -ENOMEM;
goto error_free_completed_registrations;
@ -90,21 +79,15 @@ static int iio_gpio_trigger_probe(struct platform_device *pdev)
ret = -ENOMEM;
goto error_put_trigger;
}
trig->control_attrs = &iio_gpio_trigger_attr_group;
trig->private_data = trig_info;
trig_info->irq = irq;
trig->owner = THIS_MODULE;
trig->name = kasprintf(GFP_KERNEL, "irqtrig%d", irq);
if (trig->name == NULL) {
ret = -ENOMEM;
goto error_free_trig_info;
}
ret = request_irq(irq, iio_gpio_trigger_poll,
irqflags, trig->name, trig);
if (ret) {
dev_err(&pdev->dev,
"request IRQ-%d failed", irq);
goto error_free_name;
goto error_free_trig_info;
}
ret = iio_trigger_register(trig);
@ -124,8 +107,6 @@ static int iio_gpio_trigger_probe(struct platform_device *pdev)
/* First clean up the partly allocated trigger */
error_release_irq:
free_irq(irq, trig);
error_free_name:
kfree(trig->name);
error_free_trig_info:
kfree(trig_info);
error_put_trigger:
@ -138,7 +119,6 @@ error_free_completed_registrations:
alloc_list) {
trig_info = trig->private_data;
free_irq(gpio_to_irq(trig_info->irq), trig);
kfree(trig->name);
kfree(trig_info);
iio_trigger_unregister(trig);
}
@ -159,7 +139,6 @@ static int iio_gpio_trigger_remove(struct platform_device *pdev)
trig_info = trig->private_data;
iio_trigger_unregister(trig);
free_irq(trig_info->irq, trig);
kfree(trig->name);
kfree(trig_info);
iio_put_trigger(trig);
}

24
drivers/staging/iio/trigger/iio-trig-periodic-rtc.c
View File

@ -72,20 +72,24 @@ error_ret:
return ret;
}
static IIO_TRIGGER_NAME_ATTR;
static DEVICE_ATTR(frequency, S_IRUGO | S_IWUSR,
iio_trig_periodic_read_freq,
iio_trig_periodic_write_freq);
static struct attribute *iio_trig_prtc_attrs[] = {
&dev_attr_frequency.attr,
&dev_attr_name.attr,
NULL,
};
static const struct attribute_group iio_trig_prtc_attr_group = {
.attrs = iio_trig_prtc_attrs,
};
static const struct attribute_group *iio_trig_prtc_attr_groups[] = {
&iio_trig_prtc_attr_group,
NULL
};
static void iio_prtc_trigger_poll(void *private_data)
{
/* Timestamp is not provided currently */
@ -103,7 +107,7 @@ static int iio_trig_periodic_rtc_probe(struct platform_device *dev)
for (i = 0;; i++) {
if (pdata[i] == NULL)
break;
trig = iio_allocate_trigger();
trig = iio_allocate_trigger("periodic%s", pdata[i]);
if (!trig) {
ret = -ENOMEM;
goto error_free_completed_registrations;
@ -118,25 +122,19 @@ static int iio_trig_periodic_rtc_probe(struct platform_device *dev)
trig->private_data = trig_info;
trig->owner = THIS_MODULE;
trig->set_trigger_state = &iio_trig_periodic_rtc_set_state;
trig->name = kasprintf(GFP_KERNEL, "periodic%s", pdata[i]);
if (trig->name == NULL) {
ret = -ENOMEM;
goto error_free_trig_info;
}
/* RTC access */
trig_info->rtc
= rtc_class_open(pdata[i]);
if (trig_info->rtc == NULL) {
ret = -EINVAL;
goto error_free_name;
goto error_free_trig_info;
}
trig_info->task.func = iio_prtc_trigger_poll;
trig_info->task.private_data = trig;
ret = rtc_irq_register(trig_info->rtc, &trig_info->task);
if (ret)
goto error_close_rtc;
trig->control_attrs = &iio_trig_prtc_attr_group;
trig->dev.groups = iio_trig_prtc_attr_groups;
ret = iio_trigger_register(trig);
if (ret)
goto error_unregister_rtc_irq;
@ -146,8 +144,6 @@ error_unregister_rtc_irq:
rtc_irq_unregister(trig_info->rtc, &trig_info->task);
error_close_rtc:
rtc_class_close(trig_info->rtc);
error_free_name:
kfree(trig->name);
error_free_trig_info:
kfree(trig_info);
error_put_trigger_and_remove_from_list:
@ -161,7 +157,6 @@ error_free_completed_registrations:
trig_info = trig->private_data;
rtc_irq_unregister(trig_info->rtc, &trig_info->task);
rtc_class_close(trig_info->rtc);
kfree(trig->name);
kfree(trig_info);
iio_trigger_unregister(trig);
}
@ -180,7 +175,6 @@ static int iio_trig_periodic_rtc_remove(struct platform_device *dev)
trig_info = trig->private_data;
rtc_irq_unregister(trig_info->rtc, &trig_info->task);
rtc_class_close(trig_info->rtc);
kfree(trig->name);
kfree(trig_info);
iio_trigger_unregister(trig);
}

23
drivers/staging/iio/trigger/iio-trig-sysfs.c
View File

@ -92,11 +92,9 @@ static ssize_t iio_sysfs_trigger_poll(struct device *dev,
}
static DEVICE_ATTR(trigger_now, S_IWUSR, NULL, iio_sysfs_trigger_poll);
static IIO_TRIGGER_NAME_ATTR;
static struct attribute *iio_sysfs_trigger_attrs[] = {
&dev_attr_trigger_now.attr,
&dev_attr_name.attr,
NULL,
};
@ -104,11 +102,15 @@ static const struct attribute_group iio_sysfs_trigger_attr_group = {
.attrs = iio_sysfs_trigger_attrs,
};
static const struct attribute_group *iio_sysfs_trigger_attr_groups[] = {
&iio_sysfs_trigger_attr_group,
NULL
};
static int iio_sysfs_trigger_probe(int id)
{
struct iio_sysfs_trig *t;
int ret;
char *name;
bool foundit = false;
mutex_lock(&iio_syfs_trig_list_mut);
list_for_each_entry(t, &iio_sysfs_trig_list, l)
@ -120,25 +122,19 @@ static int iio_sysfs_trigger_probe(int id)
ret = -EINVAL;
goto out1;
}
name = kasprintf(GFP_KERNEL, "sysfstrig%d", id);
if (name == NULL) {
ret = -ENOMEM;
goto out1;
}
t = kmalloc(sizeof(*t), GFP_KERNEL);
if (t == NULL) {
ret = -ENOMEM;
goto free_name;
goto out1;
}
t->id = id;
t->trig = iio_allocate_trigger_named(name);
t->trig = iio_allocate_trigger("sysfstrig%d", id);
if (!t->trig) {
ret = -ENOMEM;
goto free_t;
}
t->trig->control_attrs = &iio_sysfs_trigger_attr_group;
t->trig->dev.groups = iio_sysfs_trigger_attr_groups;
t->trig->owner = THIS_MODULE;
t->trig->dev.parent = &iio_sysfs_trig_dev;
@ -154,8 +150,6 @@ out2:
iio_put_trigger(t->trig);
free_t:
kfree(t);
free_name:
kfree(name);
out1:
mutex_unlock(&iio_syfs_trig_list_mut);
return ret;
@ -177,7 +171,6 @@ static int iio_sysfs_trigger_remove(int id)
}
iio_trigger_unregister(t->trig);
kfree(t->trig->name);
iio_free_trigger(t->trig);
list_del(&t->l);