From fc6d11398e22a3b2cfd7c3b8421653c6075b624b Mon Sep 17 00:00:00 2001 From: Michael Hennerich Date: Fri, 27 Apr 2012 10:58:36 +0200 Subject: iio: core: iio_chan_spec_ext_info: Add private handle 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 Acked-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman --- drivers/iio/industrialio-core.c | 5 +++-- drivers/staging/iio/dac/ad5064.c | 12 +++++++----- drivers/staging/iio/dac/ad5446.c | 6 +++++- include/linux/iio/iio.h | 11 +++++++---- 4 files changed, 22 insertions(+), 12 deletions(-) diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c index 47a72473d0b5..72e33b819f91 100644 --- a/drivers/iio/industrialio-core.c +++ b/drivers/iio/industrialio-core.c @@ -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, diff --git a/drivers/staging/iio/dac/ad5064.c b/drivers/staging/iio/dac/ad5064.c index bce641a1cf82..047148aa66b2 100644 --- a/drivers/staging/iio/dac/ad5064.c +++ b/drivers/staging/iio/dac/ad5064.c @@ -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; diff --git a/drivers/staging/iio/dac/ad5446.c b/drivers/staging/iio/dac/ad5446.c index 3b2551f67a0d..daa65b384c13 100644 --- a/drivers/staging/iio/dac/ad5446.c +++ b/drivers/staging/iio/dac/ad5446.c @@ -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) { diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h index 43002b2b1e38..6fdbdb858e35 100644 --- a/include/linux/iio/iio.h +++ b/include/linux/iio/iio.h @@ -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; }; /** -- cgit v1.2.3