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103 lines
2.5 KiB
103 lines
2.5 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* AD7606 Parallel Interface ADC driver |
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* |
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* Copyright 2011 Analog Devices Inc. |
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*/ |
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#include <linux/module.h> |
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#include <linux/platform_device.h> |
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#include <linux/types.h> |
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#include <linux/err.h> |
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#include <linux/io.h> |
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#include <linux/iio/iio.h> |
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#include "ad7606.h" |
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static int ad7606_par16_read_block(struct device *dev, |
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int count, void *buf) |
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{ |
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struct iio_dev *indio_dev = dev_get_drvdata(dev); |
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struct ad7606_state *st = iio_priv(indio_dev); |
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insw((unsigned long)st->base_address, buf, count); |
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return 0; |
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} |
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static const struct ad7606_bus_ops ad7606_par16_bops = { |
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.read_block = ad7606_par16_read_block, |
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}; |
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static int ad7606_par8_read_block(struct device *dev, |
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int count, void *buf) |
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{ |
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struct iio_dev *indio_dev = dev_get_drvdata(dev); |
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struct ad7606_state *st = iio_priv(indio_dev); |
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insb((unsigned long)st->base_address, buf, count * 2); |
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return 0; |
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} |
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static const struct ad7606_bus_ops ad7606_par8_bops = { |
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.read_block = ad7606_par8_read_block, |
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}; |
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static int ad7606_par_probe(struct platform_device *pdev) |
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{ |
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const struct platform_device_id *id = platform_get_device_id(pdev); |
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struct resource *res; |
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void __iomem *addr; |
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resource_size_t remap_size; |
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int irq; |
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irq = platform_get_irq(pdev, 0); |
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if (irq < 0) |
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return irq; |
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
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addr = devm_ioremap_resource(&pdev->dev, res); |
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if (IS_ERR(addr)) |
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return PTR_ERR(addr); |
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remap_size = resource_size(res); |
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return ad7606_probe(&pdev->dev, irq, addr, |
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id->name, id->driver_data, |
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remap_size > 1 ? &ad7606_par16_bops : |
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&ad7606_par8_bops); |
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} |
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static const struct platform_device_id ad7606_driver_ids[] = { |
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{ .name = "ad7605-4", .driver_data = ID_AD7605_4, }, |
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{ .name = "ad7606-4", .driver_data = ID_AD7606_4, }, |
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{ .name = "ad7606-6", .driver_data = ID_AD7606_6, }, |
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{ .name = "ad7606-8", .driver_data = ID_AD7606_8, }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(platform, ad7606_driver_ids); |
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static const struct of_device_id ad7606_of_match[] = { |
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{ .compatible = "adi,ad7605-4" }, |
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{ .compatible = "adi,ad7606-4" }, |
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{ .compatible = "adi,ad7606-6" }, |
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{ .compatible = "adi,ad7606-8" }, |
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{ }, |
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}; |
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MODULE_DEVICE_TABLE(of, ad7606_of_match); |
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static struct platform_driver ad7606_driver = { |
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.probe = ad7606_par_probe, |
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.id_table = ad7606_driver_ids, |
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.driver = { |
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.name = "ad7606", |
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.pm = AD7606_PM_OPS, |
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.of_match_table = ad7606_of_match, |
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}, |
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}; |
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module_platform_driver(ad7606_driver); |
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MODULE_AUTHOR("Michael Hennerich <[email protected]>"); |
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MODULE_DESCRIPTION("Analog Devices AD7606 ADC"); |
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MODULE_LICENSE("GPL v2");
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