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iio: Update iio_channel_get_all and iio_channel_get_all_cb API

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Pass device pointer instead of device name as parameter to iio_channel_get_all
and iio_channel_get_all_cb. This will enable us to use OF information to
retrieve consumer channel information.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Guenter Roeck 2013-01-31 21:43:00 +00:00 committed by Jonathan Cameron
parent 482bb4e6c6
commit ca7d98dbd7
4 changed files with 17 additions and 11 deletions
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4
drivers/iio/buffer_cb.c
View File

@ -25,7 +25,7 @@ static struct iio_buffer_access_funcs iio_cb_access = {
.store_to = &iio_buffer_cb_store_to,
};
struct iio_cb_buffer *iio_channel_get_all_cb(const char *name,
struct iio_cb_buffer *iio_channel_get_all_cb(struct device *dev,
int (*cb)(u8 *data,
void *private),
void *private)
@ -46,7 +46,7 @@ struct iio_cb_buffer *iio_channel_get_all_cb(const char *name,
cb_buff->buffer.access = &iio_cb_access;
INIT_LIST_HEAD(&cb_buff->buffer.demux_list);
cb_buff->channels = iio_channel_get_all(name);
cb_buff->channels = iio_channel_get_all(dev);
if (IS_ERR(cb_buff->channels)) {
ret = PTR_ERR(cb_buff->channels);
goto error_free_cb_buff;

6
drivers/iio/inkern.c
View File

@ -167,16 +167,18 @@ void iio_channel_release(struct iio_channel *channel)
}
EXPORT_SYMBOL_GPL(iio_channel_release);
struct iio_channel *iio_channel_get_all(const char *name)
struct iio_channel *iio_channel_get_all(struct device *dev)
{
const char *name;
struct iio_channel *chans;
struct iio_map_internal *c = NULL;
int nummaps = 0;
int mapind = 0;
int i, ret;
if (name == NULL)
if (dev == NULL)
return ERR_PTR(-EINVAL);
name = dev_name(dev);
mutex_lock(&iio_map_list_lock);
/* first count the matching maps */

9
drivers/staging/iio/iio_hwmon.c
View File

@ -71,14 +71,17 @@ static int iio_hwmon_probe(struct platform_device *pdev)
int ret, i;
int in_i = 1, temp_i = 1, curr_i = 1;
enum iio_chan_type type;
struct iio_channel *channels;
channels = iio_channel_get_all(dev);
if (IS_ERR(channels))
return PTR_ERR(channels);
st = devm_kzalloc(dev, sizeof(*st), GFP_KERNEL);
if (st == NULL)
return -ENOMEM;
st->channels = iio_channel_get_all(dev_name(dev));
if (IS_ERR(st->channels))
return PTR_ERR(st->channels);
st->channels = channels;
/* count how many attributes we have */
while (st->channels[st->num_channels].indio_dev)

9
include/linux/iio/consumer.h
View File

@ -15,6 +15,7 @@
struct iio_dev;
struct iio_chan_spec;
struct device;
/**
* struct iio_channel - everything needed for a consumer to use a channel
@ -48,14 +49,14 @@ void iio_channel_release(struct iio_channel *chan);
/**
* iio_channel_get_all() - get all channels associated with a client
* @name: name of consumer device.
* @dev: Pointer to consumer device.
*
* Returns an array of iio_channel structures terminated with one with
* null iio_dev pointer.
* This function is used by fairly generic consumers to get all the
* channels registered as having this consumer.
*/
struct iio_channel *iio_channel_get_all(const char *name);
struct iio_channel *iio_channel_get_all(struct device *dev);
/**
* iio_channel_release_all() - reverse iio_channel_get_all
@ -66,7 +67,7 @@ void iio_channel_release_all(struct iio_channel *chan);
struct iio_cb_buffer;
/**
* iio_channel_get_all_cb() - register callback for triggered capture
* @name: Name of client device.
* @dev: Pointer to client device.
* @cb: Callback function.
* @private: Private data passed to callback.
*
@ -74,7 +75,7 @@ struct iio_cb_buffer;
* So if the channels requested come from different devices this will
* fail.
*/
struct iio_cb_buffer *iio_channel_get_all_cb(const char *name,
struct iio_cb_buffer *iio_channel_get_all_cb(struct device *dev,
int (*cb)(u8 *data,
void *private),
void *private);