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staging:iio:adc:ad7291: fix channel mapping for event enables 

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Michael Hennerich 2011-09-02 17:25:43 +01:00 committed by Greg Kroah-Hartman
parent b576590dcd
commit 06420c2d61
1 changed files with 12 additions and 12 deletions
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24
drivers/staging/iio/adc/ad7291.c
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@ -101,7 +101,7 @@ struct ad7291_chip_info {
struct regulator *reg;
u16 int_vref_mv;
u16 command;
u8 c_mask; /* Active voltage channels for events */
u16 c_mask; /* Active voltage channels for events */
struct mutex state_lock;
};
@ -381,7 +381,7 @@ static int ad7291_read_event_config(struct iio_dev *indio_dev,
switch (IIO_EVENT_CODE_EXTRACT_CHAN_TYPE(event_code)) {
case IIO_VOLTAGE:
if (chip->c_mask &
(1 << IIO_EVENT_CODE_EXTRACT_NUM(event_code)))
(1 << (15 - IIO_EVENT_CODE_EXTRACT_NUM(event_code))))
return 1;
else
return 0;
@ -412,19 +412,19 @@ static int ad7291_write_event_config(struct iio_dev *indio_dev,
switch (IIO_EVENT_CODE_EXTRACT_TYPE(event_code)) {
case IIO_VOLTAGE:
if ((!state) && (chip->c_mask &
(1 << IIO_EVENT_CODE_EXTRACT_NUM(event_code))))
chip->c_mask &=
~(1 << IIO_EVENT_CODE_EXTRACT_NUM(event_code));
else if (state && (!(chip->c_mask &
(1 << IIO_EVENT_CODE_EXTRACT_NUM(event_code)))))
chip->c_mask |=
(1 << IIO_EVENT_CODE_EXTRACT_NUM(event_code));
if ((!state) && (chip->c_mask & (1 << (15 -
IIO_EVENT_CODE_EXTRACT_NUM(event_code)))))
chip->c_mask &= ~(1 << (15 - IIO_EVENT_CODE_EXTRACT_NUM
(event_code)));
else if (state && (!(chip->c_mask & (1 << (15 -
IIO_EVENT_CODE_EXTRACT_NUM(event_code))))))
chip->c_mask |= (1 << (15 - IIO_EVENT_CODE_EXTRACT_NUM
(event_code)));
else
break;
regval &= ~AD7291_AUTOCYCLE;
regval |= ((u16)chip->c_mask << 8);
regval |= chip->c_mask;
if (chip->c_mask) /* Enable autocycle? */
regval |= AD7291_AUTOCYCLE;
@ -461,7 +461,7 @@ static int ad7291_read_raw(struct iio_dev *indio_dev,
case IIO_VOLTAGE:
mutex_lock(&chip->state_lock);
/* If in autocycle mode drop through */
if (chip->command & 0x1) {
if (chip->command & AD7291_AUTOCYCLE) {
mutex_unlock(&chip->state_lock);
return -EBUSY;
}