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)
53 struct iio_dev *indio_dev;
55 resource_size_t remap_size;
58 irq = platform_get_irq(pdev, 0);
60 dev_err(&pdev->dev, "no irq\n");
64 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
65 addr = devm_ioremap_resource(&pdev->dev, res);
69 remap_size = resource_size(res);
71 indio_dev = ad7606_probe(&pdev->dev, irq, addr,
72 platform_get_device_id(pdev)->driver_data,
73 remap_size > 1 ? &ad7606_par16_bops :
76 if (IS_ERR(indio_dev))
77 return PTR_ERR(indio_dev);
79 platform_set_drvdata(pdev, indio_dev);
84 static int ad7606_par_remove(struct platform_device *pdev)
86 struct iio_dev *indio_dev = platform_get_drvdata(pdev);
88 ad7606_remove(indio_dev, platform_get_irq(pdev, 0));
94 static int ad7606_par_suspend(struct device *dev)
96 struct iio_dev *indio_dev = dev_get_drvdata(dev);
98 ad7606_suspend(indio_dev);
103 static int ad7606_par_resume(struct device *dev)
105 struct iio_dev *indio_dev = dev_get_drvdata(dev);
107 ad7606_resume(indio_dev);
112 static const struct dev_pm_ops ad7606_pm_ops = {
113 .suspend = ad7606_par_suspend,
114 .resume = ad7606_par_resume,
116 #define AD7606_PAR_PM_OPS (&ad7606_pm_ops)
119 #define AD7606_PAR_PM_OPS NULL
120 #endif /* CONFIG_PM */
122 static const struct platform_device_id ad7606_driver_ids[] = {
125 .driver_data = ID_AD7606_8,
128 .driver_data = ID_AD7606_6,
131 .driver_data = ID_AD7606_4,
136 MODULE_DEVICE_TABLE(platform, ad7606_driver_ids);
138 static struct platform_driver ad7606_driver = {
139 .probe = ad7606_par_probe,
140 .remove = ad7606_par_remove,
141 .id_table = ad7606_driver_ids,
144 .pm = AD7606_PAR_PM_OPS,
148 module_platform_driver(ad7606_driver);
150 MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
151 MODULE_DESCRIPTION("Analog Devices AD7606 ADC");
152 MODULE_LICENSE("GPL v2");