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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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d3be83244c
This patch applies the semantic patch: @@ expression I, P, SP; @@ I = devm_iio_device_alloc(P, SP); ... - I->dev.parent = P; It updates 302 files and does 307 deletions. This semantic patch also removes some comments like '/* Establish that the iio_dev is a child of the i2c device */' But this is is only done in case where the block is left empty. The patch does not seem to cover all cases. It looks like in some cases a different variable is used in some cases to assign the parent, but it points to the same reference. In other cases, the block covered by ... may be just too big to be covered by the semantic patch. However, this looks pretty good as well, as it does cover a big bulk of the drivers that should remove the parent assignment. Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
135 lines
3.2 KiB
C
135 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2016 Golden Delicious Comp. GmbH&Co. KG
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* Nikolaus Schaller <hns@goldelico.com>
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*/
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#include <linux/i2c.h>
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#include <linux/iio/iio.h>
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#include "tsc2007.h"
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struct tsc2007_iio {
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struct tsc2007 *ts;
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};
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#define TSC2007_CHAN_IIO(_chan, _name, _type, _chan_info) \
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{ \
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.datasheet_name = _name, \
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.type = _type, \
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.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
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BIT(_chan_info), \
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.indexed = 1, \
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.channel = _chan, \
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}
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static const struct iio_chan_spec tsc2007_iio_channel[] = {
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TSC2007_CHAN_IIO(0, "x", IIO_VOLTAGE, IIO_CHAN_INFO_RAW),
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TSC2007_CHAN_IIO(1, "y", IIO_VOLTAGE, IIO_CHAN_INFO_RAW),
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TSC2007_CHAN_IIO(2, "z1", IIO_VOLTAGE, IIO_CHAN_INFO_RAW),
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TSC2007_CHAN_IIO(3, "z2", IIO_VOLTAGE, IIO_CHAN_INFO_RAW),
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TSC2007_CHAN_IIO(4, "adc", IIO_VOLTAGE, IIO_CHAN_INFO_RAW),
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TSC2007_CHAN_IIO(5, "rt", IIO_VOLTAGE, IIO_CHAN_INFO_RAW), /* Ohms? */
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TSC2007_CHAN_IIO(6, "pen", IIO_PRESSURE, IIO_CHAN_INFO_RAW),
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TSC2007_CHAN_IIO(7, "temp0", IIO_TEMP, IIO_CHAN_INFO_RAW),
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TSC2007_CHAN_IIO(8, "temp1", IIO_TEMP, IIO_CHAN_INFO_RAW),
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};
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static int tsc2007_read_raw(struct iio_dev *indio_dev,
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struct iio_chan_spec const *chan,
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int *val, int *val2, long mask)
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{
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struct tsc2007_iio *iio = iio_priv(indio_dev);
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struct tsc2007 *tsc = iio->ts;
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int adc_chan = chan->channel;
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int ret = 0;
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if (adc_chan >= ARRAY_SIZE(tsc2007_iio_channel))
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return -EINVAL;
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if (mask != IIO_CHAN_INFO_RAW)
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return -EINVAL;
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mutex_lock(&tsc->mlock);
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switch (chan->channel) {
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case 0:
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*val = tsc2007_xfer(tsc, READ_X);
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break;
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case 1:
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*val = tsc2007_xfer(tsc, READ_Y);
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break;
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case 2:
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*val = tsc2007_xfer(tsc, READ_Z1);
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break;
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case 3:
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*val = tsc2007_xfer(tsc, READ_Z2);
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break;
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case 4:
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*val = tsc2007_xfer(tsc, (ADC_ON_12BIT | TSC2007_MEASURE_AUX));
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break;
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case 5: {
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struct ts_event tc;
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tc.x = tsc2007_xfer(tsc, READ_X);
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tc.z1 = tsc2007_xfer(tsc, READ_Z1);
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tc.z2 = tsc2007_xfer(tsc, READ_Z2);
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*val = tsc2007_calculate_resistance(tsc, &tc);
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break;
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}
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case 6:
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*val = tsc2007_is_pen_down(tsc);
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break;
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case 7:
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*val = tsc2007_xfer(tsc,
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(ADC_ON_12BIT | TSC2007_MEASURE_TEMP0));
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break;
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case 8:
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*val = tsc2007_xfer(tsc,
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(ADC_ON_12BIT | TSC2007_MEASURE_TEMP1));
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break;
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}
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/* Prepare for next touch reading - power down ADC, enable PENIRQ */
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tsc2007_xfer(tsc, PWRDOWN);
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mutex_unlock(&tsc->mlock);
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ret = IIO_VAL_INT;
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return ret;
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}
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static const struct iio_info tsc2007_iio_info = {
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.read_raw = tsc2007_read_raw,
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};
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int tsc2007_iio_configure(struct tsc2007 *ts)
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{
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struct iio_dev *indio_dev;
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struct tsc2007_iio *iio;
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int error;
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indio_dev = devm_iio_device_alloc(&ts->client->dev, sizeof(*iio));
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if (!indio_dev) {
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dev_err(&ts->client->dev, "iio_device_alloc failed\n");
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return -ENOMEM;
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}
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iio = iio_priv(indio_dev);
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iio->ts = ts;
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indio_dev->name = "tsc2007";
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indio_dev->info = &tsc2007_iio_info;
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indio_dev->modes = INDIO_DIRECT_MODE;
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indio_dev->channels = tsc2007_iio_channel;
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indio_dev->num_channels = ARRAY_SIZE(tsc2007_iio_channel);
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error = devm_iio_device_register(&ts->client->dev, indio_dev);
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if (error) {
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dev_err(&ts->client->dev,
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"iio_device_register() failed: %d\n", error);
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return error;
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}
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return 0;
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}
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