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iio: core: iio_chan_spec_ext_info: Add private handle

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There is currently no user, but we might need it in future.
So better add it now, before we have to convert drivers afterwards.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Michael Hennerich 2012-04-27 10:58:36 +02:00 committed by Greg Kroah-Hartman
parent 73e016ef94
commit fc6d11398e
4 changed files with 22 additions and 12 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
drivers/iio/industrialio-core.c
View file

@ -281,7 +281,7 @@ static ssize_t iio_read_channel_ext_info(struct device *dev,
ext_info = &this_attr->c->ext_info[this_attr->address];
return ext_info->read(indio_dev, this_attr->c, buf);
return ext_info->read(indio_dev, ext_info->private, this_attr->c, buf);
}
static ssize_t iio_write_channel_ext_info(struct device *dev,
@ -295,7 +295,8 @@ static ssize_t iio_write_channel_ext_info(struct device *dev,
ext_info = &this_attr->c->ext_info[this_attr->address];
return ext_info->write(indio_dev, this_attr->c, buf, len);
return ext_info->write(indio_dev, ext_info->private,
this_attr->c, buf, len);
}
static ssize_t iio_read_channel_info(struct device *dev,

12
drivers/staging/iio/dac/ad5064.c
View file

@ -144,14 +144,14 @@ static const char ad5064_powerdown_modes[][15] = {
};
static ssize_t ad5064_read_powerdown_mode_available(struct iio_dev *indio_dev,
const struct iio_chan_spec *chan, char *buf)
uintptr_t private, const struct iio_chan_spec *chan, char *buf)
{
return sprintf(buf, "%s %s %s\n", ad5064_powerdown_modes[1],
ad5064_powerdown_modes[2], ad5064_powerdown_modes[3]);
}
static ssize_t ad5064_read_powerdown_mode(struct iio_dev *indio_dev,
const struct iio_chan_spec *chan, char *buf)
uintptr_t private, const struct iio_chan_spec *chan, char *buf)
{
struct ad5064_state *st = iio_priv(indio_dev);
@ -160,7 +160,8 @@ static ssize_t ad5064_read_powerdown_mode(struct iio_dev *indio_dev,
}
static ssize_t ad5064_write_powerdown_mode(struct iio_dev *indio_dev,
const struct iio_chan_spec *chan, const char *buf, size_t len)
uintptr_t private, const struct iio_chan_spec *chan, const char *buf,
size_t len)
{
struct ad5064_state *st = iio_priv(indio_dev);
unsigned int mode, i;
@ -187,7 +188,7 @@ static ssize_t ad5064_write_powerdown_mode(struct iio_dev *indio_dev,
}
static ssize_t ad5064_read_dac_powerdown(struct iio_dev *indio_dev,
const struct iio_chan_spec *chan, char *buf)
uintptr_t private, const struct iio_chan_spec *chan, char *buf)
{
struct ad5064_state *st = iio_priv(indio_dev);
@ -195,7 +196,8 @@ static ssize_t ad5064_read_dac_powerdown(struct iio_dev *indio_dev,
}
static ssize_t ad5064_write_dac_powerdown(struct iio_dev *indio_dev,
const struct iio_chan_spec *chan, const char *buf, size_t len)
uintptr_t private, const struct iio_chan_spec *chan, const char *buf,
size_t len)
{
struct ad5064_state *st = iio_priv(indio_dev);
bool pwr_down;

6
drivers/staging/iio/dac/ad5446.c
View file

@ -46,13 +46,14 @@ static const char * const ad5446_powerdown_modes[] = {
};
static ssize_t ad5446_read_powerdown_mode_available(struct iio_dev *indio_dev,
const struct iio_chan_spec *chan, char *buf)
uintptr_t private, const struct iio_chan_spec *chan, char *buf)
{
return sprintf(buf, "%s %s %s\n", ad5446_powerdown_modes[1],
ad5446_powerdown_modes[2], ad5446_powerdown_modes[3]);
}
static ssize_t ad5446_write_powerdown_mode(struct iio_dev *indio_dev,
uintptr_t private,
const struct iio_chan_spec *chan,
const char *buf, size_t len)
{
@ -73,6 +74,7 @@ static ssize_t ad5446_write_powerdown_mode(struct iio_dev *indio_dev,
}
static ssize_t ad5446_read_powerdown_mode(struct iio_dev *indio_dev,
uintptr_t private,
const struct iio_chan_spec *chan,
char *buf)
{
@ -82,6 +84,7 @@ static ssize_t ad5446_read_powerdown_mode(struct iio_dev *indio_dev,
}
static ssize_t ad5446_read_dac_powerdown(struct iio_dev *indio_dev,
uintptr_t private,
const struct iio_chan_spec *chan,
char *buf)
{
@ -91,6 +94,7 @@ static ssize_t ad5446_read_dac_powerdown(struct iio_dev *indio_dev,
}
static ssize_t ad5446_write_dac_powerdown(struct iio_dev *indio_dev,
uintptr_t private,
const struct iio_chan_spec *chan,
const char *buf, size_t len)
{

11
include/linux/iio/iio.h
View file

@ -111,14 +111,17 @@ struct iio_dev;
* @shared: Whether this attribute is shared between all channels.
* @read: Read callback for this info attribute, may be NULL.
* @write: Write callback for this info attribute, may be NULL.
* @private: Data private to the driver.
*/
struct iio_chan_spec_ext_info {
const char *name;
bool shared;
ssize_t (*read)(struct iio_dev *, struct iio_chan_spec const *,
char *buf);
ssize_t (*write)(struct iio_dev *, struct iio_chan_spec const *,
const char *buf, size_t len);
ssize_t (*read)(struct iio_dev *, uintptr_t private,
struct iio_chan_spec const *, char *buf);
ssize_t (*write)(struct iio_dev *, uintptr_t private,
struct iio_chan_spec const *, const char *buf,
size_t len);
uintptr_t private;
};
/**