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iio: cleanup buffer setup code in max1363 driver 

use iio_triggered_buffer_setup(), iio_triggered_buffer_cleanup()

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Peter Meerwald 2012-12-30 23:26:00 +00:00 committed by Jonathan Cameron
parent 99e02018df
commit 4389fbec5b
1 changed files with 5 additions and 54 deletions
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59
drivers/iio/adc/max1363.c
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@ -39,6 +39,7 @@
#include <linux/iio/driver.h>
#include <linux/iio/kfifo_buf.h>
#include <linux/iio/trigger_consumer.h>
#include <linux/iio/triggered_buffer.h>
#define MAX1363_SETUP_BYTE(a) ((a) | 0x80)
@ -1483,48 +1484,6 @@ static const struct iio_buffer_setup_ops max1363_buffered_setup_ops = {
.predisable = &iio_triggered_buffer_predisable,
};
static int max1363_register_buffered_funcs_and_init(struct iio_dev *indio_dev)
{
struct max1363_state *st = iio_priv(indio_dev);
int ret = 0;
indio_dev->buffer = iio_kfifo_allocate(indio_dev);
if (!indio_dev->buffer) {
ret = -ENOMEM;
goto error_ret;
}
indio_dev->pollfunc = iio_alloc_pollfunc(NULL,
&max1363_trigger_handler,
IRQF_ONESHOT,
indio_dev,
"%s_consumer%d",
st->client->name,
indio_dev->id);
if (indio_dev->pollfunc == NULL) {
ret = -ENOMEM;
goto error_deallocate_sw_rb;
}
/* Buffer functions - here trigger setup related */
indio_dev->setup_ops = &max1363_buffered_setup_ops;
/* Flag that polled buffering is possible */
indio_dev->modes |= INDIO_BUFFER_TRIGGERED;
return 0;
error_deallocate_sw_rb:
iio_kfifo_free(indio_dev->buffer);
error_ret:
return ret;
}
static void max1363_buffer_cleanup(struct iio_dev *indio_dev)
{
/* ensure that the trigger has been detached */
iio_dealloc_pollfunc(indio_dev->pollfunc);
iio_kfifo_free(indio_dev->buffer);
}
static int __devinit max1363_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
@ -1577,16 +1536,11 @@ static int __devinit max1363_probe(struct i2c_client *client,
if (ret < 0)
goto error_free_available_scan_masks;
ret = max1363_register_buffered_funcs_and_init(indio_dev);
ret = iio_triggered_buffer_setup(indio_dev, NULL,
&max1363_trigger_handler, &max1363_buffered_setup_ops);
if (ret)
goto error_free_available_scan_masks;
ret = iio_buffer_register(indio_dev,
st->chip_info->channels,
st->chip_info->num_channels);
if (ret)
goto error_cleanup_buffer;
if (client->irq) {
ret = request_threaded_irq(st->client->irq,
NULL,
@ -1607,9 +1561,7 @@ static int __devinit max1363_probe(struct i2c_client *client,
error_free_irq:
free_irq(st->client->irq, indio_dev);
error_uninit_buffer:
iio_buffer_unregister(indio_dev);
error_cleanup_buffer:
max1363_buffer_cleanup(indio_dev);
iio_triggered_buffer_cleanup(indio_dev);
error_free_available_scan_masks:
kfree(indio_dev->available_scan_masks);
error_unregister_map:
@ -1632,8 +1584,7 @@ static int __devexit max1363_remove(struct i2c_client *client)
iio_device_unregister(indio_dev);
if (client->irq)
free_irq(st->client->irq, indio_dev);
iio_buffer_unregister(indio_dev);
max1363_buffer_cleanup(indio_dev);
iio_triggered_buffer_cleanup(indio_dev);
kfree(indio_dev->available_scan_masks);
if (!IS_ERR(st->reg)) {
regulator_disable(st->reg);