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- /*
- * AD7606 Parallel Interface ADC driver
- *
- * Copyright 2011 Analog Devices Inc.
- *
- * Licensed under the GPL-2.
- */
- #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 platform_device *pdev = to_platform_device(dev);
- struct iio_dev *indio_dev = platform_get_drvdata(pdev);
- 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 platform_device *pdev = to_platform_device(dev);
- struct iio_dev *indio_dev = platform_get_drvdata(pdev);
- 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)
- {
- struct resource *res;
- struct iio_dev *indio_dev;
- 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\n");
- return -ENODEV;
- }
- 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);
- indio_dev = ad7606_probe(&pdev->dev, irq, addr,
- platform_get_device_id(pdev)->driver_data,
- remap_size > 1 ? &ad7606_par16_bops :
- &ad7606_par8_bops);
- if (IS_ERR(indio_dev))
- return PTR_ERR(indio_dev);
- platform_set_drvdata(pdev, indio_dev);
- return 0;
- }
- static int ad7606_par_remove(struct platform_device *pdev)
- {
- struct iio_dev *indio_dev = platform_get_drvdata(pdev);
- ad7606_remove(indio_dev, platform_get_irq(pdev, 0));
- return 0;
- }
- #ifdef CONFIG_PM
- static int ad7606_par_suspend(struct device *dev)
- {
- struct iio_dev *indio_dev = dev_get_drvdata(dev);
- ad7606_suspend(indio_dev);
- return 0;
- }
- static int ad7606_par_resume(struct device *dev)
- {
- struct iio_dev *indio_dev = dev_get_drvdata(dev);
- ad7606_resume(indio_dev);
- return 0;
- }
- static const struct dev_pm_ops ad7606_pm_ops = {
- .suspend = ad7606_par_suspend,
- .resume = ad7606_par_resume,
- };
- #define AD7606_PAR_PM_OPS (&ad7606_pm_ops)
- #else
- #define AD7606_PAR_PM_OPS NULL
- #endif /* CONFIG_PM */
- static const struct platform_device_id ad7606_driver_ids[] = {
- {
- .name = "ad7606-8",
- .driver_data = ID_AD7606_8,
- }, {
- .name = "ad7606-6",
- .driver_data = ID_AD7606_6,
- }, {
- .name = "ad7606-4",
- .driver_data = ID_AD7606_4,
- },
- { }
- };
- MODULE_DEVICE_TABLE(platform, ad7606_driver_ids);
- static struct platform_driver ad7606_driver = {
- .probe = ad7606_par_probe,
- .remove = ad7606_par_remove,
- .id_table = ad7606_driver_ids,
- .driver = {
- .name = "ad7606",
- .pm = AD7606_PAR_PM_OPS,
- },
- };
- module_platform_driver(ad7606_driver);
- MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
- MODULE_DESCRIPTION("Analog Devices AD7606 ADC");
- MODULE_LICENSE("GPL v2");
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