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author | Stefan Popa <stefan.popa@analog.com> | 2018-12-17 14:23:39 +0200 |
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committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2019-01-05 16:10:59 +0000 |
commit | 2985a5d88455a3edd51358fc77f61b684d0e9265 (patch) | |
tree | a8e331cf984ed17af7f5ca7150d6cda22f69b2b3 /drivers/iio/adc/ad7606_par.c | |
parent | 54160ae3b2d3b45824da90a64d81c9a148c6fdbf (diff) | |
download | linux-2985a5d88455a3edd51358fc77f61b684d0e9265.tar.bz2 |
staging: iio: adc: ad7606: Move out of staging
Move ad7606 ADC driver out of staging and into the mainline.
Signed-off-by: Stefan Popa <stefan.popa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio/adc/ad7606_par.c')
-rw-r--r-- | drivers/iio/adc/ad7606_par.c | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/drivers/iio/adc/ad7606_par.c b/drivers/iio/adc/ad7606_par.c new file mode 100644 index 000000000000..1b08028facde --- /dev/null +++ b/drivers/iio/adc/ad7606_par.c @@ -0,0 +1,105 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * AD7606 Parallel Interface ADC driver + * + * Copyright 2011 Analog Devices Inc. + */ + +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/types.h> +#include <linux/err.h> +#include <linux/io.h> + +#include <linux/iio/iio.h> +#include "ad7606.h" + +static int ad7606_par16_read_block(struct device *dev, + int count, void *buf) +{ + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct ad7606_state *st = iio_priv(indio_dev); + + insw((unsigned long)st->base_address, buf, count); + + return 0; +} + +static const struct ad7606_bus_ops ad7606_par16_bops = { + .read_block = ad7606_par16_read_block, +}; + +static int ad7606_par8_read_block(struct device *dev, + int count, void *buf) +{ + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct ad7606_state *st = iio_priv(indio_dev); + + insb((unsigned long)st->base_address, buf, count * 2); + + return 0; +} + +static const struct ad7606_bus_ops ad7606_par8_bops = { + .read_block = ad7606_par8_read_block, +}; + +static int ad7606_par_probe(struct platform_device *pdev) +{ + const struct platform_device_id *id = platform_get_device_id(pdev); + struct resource *res; + void __iomem *addr; + resource_size_t remap_size; + int irq; + + irq = platform_get_irq(pdev, 0); + if (irq < 0) { + dev_err(&pdev->dev, "no irq: %d\n", irq); + return irq; + } + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + addr = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(addr)) + return PTR_ERR(addr); + + remap_size = resource_size(res); + + return ad7606_probe(&pdev->dev, irq, addr, + id->name, id->driver_data, + remap_size > 1 ? &ad7606_par16_bops : + &ad7606_par8_bops); +} + +static const struct platform_device_id ad7606_driver_ids[] = { + { .name = "ad7605-4", .driver_data = ID_AD7605_4, }, + { .name = "ad7606-4", .driver_data = ID_AD7606_4, }, + { .name = "ad7606-6", .driver_data = ID_AD7606_6, }, + { .name = "ad7606-8", .driver_data = ID_AD7606_8, }, + { } +}; +MODULE_DEVICE_TABLE(platform, ad7606_driver_ids); + +static const struct of_device_id ad7606_of_match[] = { + { .compatible = "adi,ad7605-4" }, + { .compatible = "adi,ad7606-4" }, + { .compatible = "adi,ad7606-6" }, + { .compatible = "adi,ad7606-8" }, + { }, +}; +MODULE_DEVICE_TABLE(of, ad7606_of_match); + +static struct platform_driver ad7606_driver = { + .probe = ad7606_par_probe, + .id_table = ad7606_driver_ids, + .driver = { + .name = "ad7606", + .pm = AD7606_PM_OPS, + .of_match_table = ad7606_of_match, + }, +}; +module_platform_driver(ad7606_driver); + +MODULE_AUTHOR("Michael Hennerich <michael.hennerich@analog.com>"); +MODULE_DESCRIPTION("Analog Devices AD7606 ADC"); +MODULE_LICENSE("GPL v2"); |