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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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7cbb753701
Currently we use two different naming schemes in the IIO API, iio_verb_object and iio_object_verb. E.g iio_device_register and iio_allocate_device. This patches renames instances of the later to the former. The patch also renames allocate to alloc as this seems to be the preferred form throughout the kernel. In particular the following renames are performed by the patch: iio_put_device -> iio_device_put iio_allocate_device -> iio_device_alloc iio_free_device -> iio_device_free iio_get_trigger -> iio_trigger_get iio_put_trigger -> iio_trigger_put iio_allocate_trigger -> iio_trigger_alloc iio_free_trigger -> iio_trigger_free The conversion was done with the following coccinelle patch with manual fixes to comments and documentation. <smpl> @@ @@ -iio_put_device +iio_device_put @@ @@ -iio_allocate_device +iio_device_alloc @@ @@ -iio_free_device +iio_device_free @@ @@ -iio_get_trigger +iio_trigger_get @@ @@ -iio_put_trigger +iio_trigger_put @@ @@ -iio_allocate_trigger +iio_trigger_alloc @@ @@ -iio_free_trigger +iio_trigger_free </smpl> Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Acked-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
128 lines
2.8 KiB
C
128 lines
2.8 KiB
C
/*
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* ad2s90.c simple support for the ADI Resolver to Digital Converters: AD2S90
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*
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* Copyright (c) 2010-2010 Analog Devices Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#include <linux/types.h>
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#include <linux/mutex.h>
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#include <linux/device.h>
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#include <linux/spi/spi.h>
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#include <linux/slab.h>
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#include <linux/sysfs.h>
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#include <linux/module.h>
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#include <linux/iio/iio.h>
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#include <linux/iio/sysfs.h>
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struct ad2s90_state {
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struct mutex lock;
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struct spi_device *sdev;
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u8 rx[2] ____cacheline_aligned;
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};
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static int ad2s90_read_raw(struct iio_dev *indio_dev,
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struct iio_chan_spec const *chan,
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int *val,
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int *val2,
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long m)
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{
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int ret;
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struct ad2s90_state *st = iio_priv(indio_dev);
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mutex_lock(&st->lock);
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ret = spi_read(st->sdev, st->rx, 2);
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if (ret)
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goto error_ret;
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*val = (((u16)(st->rx[0])) << 4) | ((st->rx[1] & 0xF0) >> 4);
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error_ret:
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mutex_unlock(&st->lock);
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return IIO_VAL_INT;
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}
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static const struct iio_info ad2s90_info = {
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.read_raw = &ad2s90_read_raw,
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.driver_module = THIS_MODULE,
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};
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static const struct iio_chan_spec ad2s90_chan = {
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.type = IIO_ANGL,
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.indexed = 1,
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.channel = 0,
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.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
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};
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static int __devinit ad2s90_probe(struct spi_device *spi)
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{
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struct iio_dev *indio_dev;
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struct ad2s90_state *st;
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int ret = 0;
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indio_dev = iio_device_alloc(sizeof(*st));
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if (indio_dev == NULL) {
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ret = -ENOMEM;
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goto error_ret;
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}
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st = iio_priv(indio_dev);
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spi_set_drvdata(spi, indio_dev);
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mutex_init(&st->lock);
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st->sdev = spi;
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indio_dev->dev.parent = &spi->dev;
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indio_dev->info = &ad2s90_info;
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indio_dev->modes = INDIO_DIRECT_MODE;
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indio_dev->channels = &ad2s90_chan;
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indio_dev->num_channels = 1;
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indio_dev->name = spi_get_device_id(spi)->name;
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ret = iio_device_register(indio_dev);
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if (ret)
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goto error_free_dev;
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/* need 600ns between CS and the first falling edge of SCLK */
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spi->max_speed_hz = 830000;
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spi->mode = SPI_MODE_3;
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spi_setup(spi);
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return 0;
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error_free_dev:
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iio_device_free(indio_dev);
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error_ret:
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return ret;
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}
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static int __devexit ad2s90_remove(struct spi_device *spi)
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{
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iio_device_unregister(spi_get_drvdata(spi));
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iio_device_free(spi_get_drvdata(spi));
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return 0;
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}
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static const struct spi_device_id ad2s90_id[] = {
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{ "ad2s90" },
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{}
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};
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MODULE_DEVICE_TABLE(spi, ad2s90_id);
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static struct spi_driver ad2s90_driver = {
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.driver = {
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.name = "ad2s90",
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.owner = THIS_MODULE,
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},
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.probe = ad2s90_probe,
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.remove = __devexit_p(ad2s90_remove),
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.id_table = ad2s90_id,
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};
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module_spi_driver(ad2s90_driver);
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MODULE_AUTHOR("Graff Yang <graff.yang@gmail.com>");
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MODULE_DESCRIPTION("Analog Devices AD2S90 Resolver to Digital SPI driver");
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MODULE_LICENSE("GPL v2");
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