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staging:iio:adc:ad7291 remove abuse of buffer events and replace with something almost sane 

This device has separate events for a sort of decaying average and for
the raw value.  We don't have a way of specifying this as yet.
For now I have both resulting in the same event code.

Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Jonathan Cameron 2011-05-18 14:42:15 +01:00 committed by Greg Kroah-Hartman
parent 0bb8be6431
commit b206c3bbb4
1 changed files with 41 additions and 15 deletions
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56
drivers/staging/iio/adc/ad7291.c
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@ -454,12 +454,6 @@ static const struct attribute_group ad7291_attribute_group = {
* temperature bound events * temperature bound events
*/ */
#define IIO_EVENT_CODE_AD7291_T_SENSE_HIGH IIO_BUFFER_EVENT_CODE(0)
#define IIO_EVENT_CODE_AD7291_T_SENSE_LOW IIO_BUFFER_EVENT_CODE(1)
#define IIO_EVENT_CODE_AD7291_T_AVG_HIGH IIO_BUFFER_EVENT_CODE(2)
#define IIO_EVENT_CODE_AD7291_T_AVG_LOW IIO_BUFFER_EVENT_CODE(3)
#define IIO_EVENT_CODE_AD7291_VOLTAGE_BASE IIO_BUFFER_EVENT_CODE(4)
static irqreturn_t ad7291_event_handler(int irq, void *private) static irqreturn_t ad7291_event_handler(int irq, void *private)
{ {
struct iio_dev *indio_dev = private; struct iio_dev *indio_dev = private;
@ -484,18 +478,50 @@ static irqreturn_t ad7291_event_handler(int irq, void *private)
command = chip->command & ~AD7291_ALART_CLEAR; command = chip->command & ~AD7291_ALART_CLEAR;
ad7291_i2c_write(chip, AD7291_COMMAND, command); ad7291_i2c_write(chip, AD7291_COMMAND, command);
for (i = 0; i < 4; i++) { if (t_status & (1 << 0))
if (t_status & (1 << i)) iio_push_event(indio_dev, 0,
iio_push_event(indio_dev, 0, IIO_UNMOD_EVENT_CODE(IIO_TEMP,
IIO_EVENT_CODE_AD7291_T_SENSE_HIGH + i, 0,
timestamp); IIO_EV_TYPE_THRESH,
} IIO_EV_DIR_FALLING),
timestamp);
if (t_status & (1 << 1))
iio_push_event(indio_dev, 0,
IIO_UNMOD_EVENT_CODE(IIO_TEMP,
0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_RISING),
timestamp);
if (t_status & (1 << 2))
iio_push_event(indio_dev, 0,
IIO_UNMOD_EVENT_CODE(IIO_TEMP,
0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_FALLING),
timestamp);
if (t_status & (1 << 3))
iio_push_event(indio_dev, 0,
IIO_UNMOD_EVENT_CODE(IIO_TEMP,
0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_RISING),
timestamp);
for (i = 0; i < AD7291_VOLTAGE_LIMIT_COUNT*2; i++) { for (i = 0; i < AD7291_VOLTAGE_LIMIT_COUNT*2; i += 2) {
if (v_status & (1 << i)) if (v_status & (1 << i))
iio_push_event(indio_dev, 0, iio_push_event(indio_dev, 0,
IIO_EVENT_CODE_AD7291_VOLTAGE_BASE + i, IIO_UNMOD_EVENT_CODE(IIO_IN,
timestamp); i/2,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_FALLING),
timestamp);
if (v_status & (1 << (i + 1)))
iio_push_event(indio_dev, 0,
IIO_UNMOD_EVENT_CODE(IIO_IN,
i/2,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_RISING),
timestamp);
} }
return IRQ_HANDLED; return IRQ_HANDLED;