mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-27 13:25:12 +07:00
4749b0a28f
This is now handled via some macro magic during the register. The field in iio_info will be removed shortly. Cc: Linux Input <linux-input@vger.kernel.org> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
140 lines
3.4 KiB
C
140 lines
3.4 KiB
C
/*
|
|
* Copyright (c) 2016 Golden Delicious Comp. GmbH&Co. KG
|
|
* Nikolaus Schaller <hns@goldelico.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <linux/i2c.h>
|
|
#include <linux/iio/iio.h>
|
|
#include "tsc2007.h"
|
|
|
|
struct tsc2007_iio {
|
|
struct tsc2007 *ts;
|
|
};
|
|
|
|
#define TSC2007_CHAN_IIO(_chan, _name, _type, _chan_info) \
|
|
{ \
|
|
.datasheet_name = _name, \
|
|
.type = _type, \
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
|
|
BIT(_chan_info), \
|
|
.indexed = 1, \
|
|
.channel = _chan, \
|
|
}
|
|
|
|
static const struct iio_chan_spec tsc2007_iio_channel[] = {
|
|
TSC2007_CHAN_IIO(0, "x", IIO_VOLTAGE, IIO_CHAN_INFO_RAW),
|
|
TSC2007_CHAN_IIO(1, "y", IIO_VOLTAGE, IIO_CHAN_INFO_RAW),
|
|
TSC2007_CHAN_IIO(2, "z1", IIO_VOLTAGE, IIO_CHAN_INFO_RAW),
|
|
TSC2007_CHAN_IIO(3, "z2", IIO_VOLTAGE, IIO_CHAN_INFO_RAW),
|
|
TSC2007_CHAN_IIO(4, "adc", IIO_VOLTAGE, IIO_CHAN_INFO_RAW),
|
|
TSC2007_CHAN_IIO(5, "rt", IIO_VOLTAGE, IIO_CHAN_INFO_RAW), /* Ohms? */
|
|
TSC2007_CHAN_IIO(6, "pen", IIO_PRESSURE, IIO_CHAN_INFO_RAW),
|
|
TSC2007_CHAN_IIO(7, "temp0", IIO_TEMP, IIO_CHAN_INFO_RAW),
|
|
TSC2007_CHAN_IIO(8, "temp1", IIO_TEMP, IIO_CHAN_INFO_RAW),
|
|
};
|
|
|
|
static int tsc2007_read_raw(struct iio_dev *indio_dev,
|
|
struct iio_chan_spec const *chan,
|
|
int *val, int *val2, long mask)
|
|
{
|
|
struct tsc2007_iio *iio = iio_priv(indio_dev);
|
|
struct tsc2007 *tsc = iio->ts;
|
|
int adc_chan = chan->channel;
|
|
int ret = 0;
|
|
|
|
if (adc_chan >= ARRAY_SIZE(tsc2007_iio_channel))
|
|
return -EINVAL;
|
|
|
|
if (mask != IIO_CHAN_INFO_RAW)
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&tsc->mlock);
|
|
|
|
switch (chan->channel) {
|
|
case 0:
|
|
*val = tsc2007_xfer(tsc, READ_X);
|
|
break;
|
|
case 1:
|
|
*val = tsc2007_xfer(tsc, READ_Y);
|
|
break;
|
|
case 2:
|
|
*val = tsc2007_xfer(tsc, READ_Z1);
|
|
break;
|
|
case 3:
|
|
*val = tsc2007_xfer(tsc, READ_Z2);
|
|
break;
|
|
case 4:
|
|
*val = tsc2007_xfer(tsc, (ADC_ON_12BIT | TSC2007_MEASURE_AUX));
|
|
break;
|
|
case 5: {
|
|
struct ts_event tc;
|
|
|
|
tc.x = tsc2007_xfer(tsc, READ_X);
|
|
tc.z1 = tsc2007_xfer(tsc, READ_Z1);
|
|
tc.z2 = tsc2007_xfer(tsc, READ_Z2);
|
|
*val = tsc2007_calculate_resistance(tsc, &tc);
|
|
break;
|
|
}
|
|
case 6:
|
|
*val = tsc2007_is_pen_down(tsc);
|
|
break;
|
|
case 7:
|
|
*val = tsc2007_xfer(tsc,
|
|
(ADC_ON_12BIT | TSC2007_MEASURE_TEMP0));
|
|
break;
|
|
case 8:
|
|
*val = tsc2007_xfer(tsc,
|
|
(ADC_ON_12BIT | TSC2007_MEASURE_TEMP1));
|
|
break;
|
|
}
|
|
|
|
/* Prepare for next touch reading - power down ADC, enable PENIRQ */
|
|
tsc2007_xfer(tsc, PWRDOWN);
|
|
|
|
mutex_unlock(&tsc->mlock);
|
|
|
|
ret = IIO_VAL_INT;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const struct iio_info tsc2007_iio_info = {
|
|
.read_raw = tsc2007_read_raw,
|
|
};
|
|
|
|
int tsc2007_iio_configure(struct tsc2007 *ts)
|
|
{
|
|
struct iio_dev *indio_dev;
|
|
struct tsc2007_iio *iio;
|
|
int error;
|
|
|
|
indio_dev = devm_iio_device_alloc(&ts->client->dev, sizeof(*iio));
|
|
if (!indio_dev) {
|
|
dev_err(&ts->client->dev, "iio_device_alloc failed\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
iio = iio_priv(indio_dev);
|
|
iio->ts = ts;
|
|
|
|
indio_dev->name = "tsc2007";
|
|
indio_dev->dev.parent = &ts->client->dev;
|
|
indio_dev->info = &tsc2007_iio_info;
|
|
indio_dev->modes = INDIO_DIRECT_MODE;
|
|
indio_dev->channels = tsc2007_iio_channel;
|
|
indio_dev->num_channels = ARRAY_SIZE(tsc2007_iio_channel);
|
|
|
|
error = devm_iio_device_register(&ts->client->dev, indio_dev);
|
|
if (error) {
|
|
dev_err(&ts->client->dev,
|
|
"iio_device_register() failed: %d\n", error);
|
|
return error;
|
|
}
|
|
|
|
return 0;
|
|
}
|