2 * AD7606 Parallel Interface ADC driver
4 * Copyright 2011 Analog Devices Inc.
6 * Licensed under the GPL-2.
9 #include <linux/module.h>
10 #include <linux/platform_device.h>
11 #include <linux/types.h>
12 #include <linux/err.h>
15 #include <linux/iio/iio.h>
18 static int ad7606_par16_read_block(struct device *dev,
21 struct platform_device *pdev = to_platform_device(dev);
22 struct iio_dev *indio_dev = platform_get_drvdata(pdev);
23 struct ad7606_state *st = iio_priv(indio_dev);
25 insw((unsigned long)st->base_address, buf, count);
30 static const struct ad7606_bus_ops ad7606_par16_bops = {
31 .read_block = ad7606_par16_read_block,
34 static int ad7606_par8_read_block(struct device *dev,
37 struct platform_device *pdev = to_platform_device(dev);
38 struct iio_dev *indio_dev = platform_get_drvdata(pdev);
39 struct ad7606_state *st = iio_priv(indio_dev);
41 insb((unsigned long)st->base_address, buf, count * 2);
46 static const struct ad7606_bus_ops ad7606_par8_bops = {
47 .read_block = ad7606_par8_read_block,
50 static int ad7606_par_probe(struct platform_device *pdev)
52 const struct platform_device_id *id = platform_get_device_id(pdev);
55 resource_size_t remap_size;
58 irq = platform_get_irq(pdev, 0);
60 dev_err(&pdev->dev, "no irq: %d\n", irq);
64 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
65 addr = devm_ioremap_resource(&pdev->dev, res);
69 remap_size = resource_size(res);
71 return ad7606_probe(&pdev->dev, irq, addr,
72 id->name, id->driver_data,
73 remap_size > 1 ? &ad7606_par16_bops :
77 static int ad7606_par_remove(struct platform_device *pdev)
79 return ad7606_remove(&pdev->dev, platform_get_irq(pdev, 0));
82 static const struct platform_device_id ad7606_driver_ids[] = {
85 .driver_data = ID_AD7606_8,
88 .driver_data = ID_AD7606_6,
91 .driver_data = ID_AD7606_4,
96 MODULE_DEVICE_TABLE(platform, ad7606_driver_ids);
98 static struct platform_driver ad7606_driver = {
99 .probe = ad7606_par_probe,
100 .remove = ad7606_par_remove,
101 .id_table = ad7606_driver_ids,
108 module_platform_driver(ad7606_driver);
110 MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
111 MODULE_DESCRIPTION("Analog Devices AD7606 ADC");
112 MODULE_LICENSE("GPL v2");