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Commit b206c3bb authored by Jonathan Cameron's avatar Jonathan Cameron Committed by Greg Kroah-Hartman
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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: default avatarJonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 0bb8be64

drivers/staging/iio/adc/ad7291.c

+42 −16
Original line number Diff line number Diff line
@@ -454,12 +454,6 @@ static const struct attribute_group ad7291_attribute_group = { 
 * 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)

{

	struct iio_dev *indio_dev = private;
@@ -484,17 +478,49 @@ static irqreturn_t ad7291_event_handler(int irq, void *private) 
	command = chip->command & ~AD7291_ALART_CLEAR;

	ad7291_i2c_write(chip, AD7291_COMMAND, command);



	for (i = 0; i < 4; i++) {

		if (t_status & (1 << i))

	if (t_status & (1 << 0))

		iio_push_event(indio_dev, 0,

				IIO_EVENT_CODE_AD7291_T_SENSE_HIGH + i,

			       IIO_UNMOD_EVENT_CODE(IIO_TEMP,

						    0,

						    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))

			iio_push_event(indio_dev, 0,

				IIO_EVENT_CODE_AD7291_VOLTAGE_BASE + i,

				       IIO_UNMOD_EVENT_CODE(IIO_IN,

							    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);

	}