Initial file dump from open source releaseHEADmaster

1 files changed, 180 insertions, 0 deletions

diff --git a/drivers/staging/iio/adc/ad7606_par.c b/drivers/staging/iio/adc/ad7606_par.c
new file mode 100644
index 00000000..58cfddea
--- /dev/null
+++ b/drivers/staging/iio/adc/ad7606_par.c
@@ -0,0 +1,180 @@
+/*
+ * 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 ret, 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);
+	if (!res)
+		return -ENODEV;
+
+	remap_size = resource_size(res);
+
+	/* Request the regions */
+	if (!request_mem_region(res->start, remap_size, "iio-ad7606")) {
+		ret = -EBUSY;
+		goto out1;
+	}
+	addr = ioremap(res->start, remap_size);
+	if (!addr) {
+		ret = -ENOMEM;
+		goto out1;
+	}
+
+	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))  {
+		ret = PTR_ERR(indio_dev);
+		goto out2;
+	}
+
+	platform_set_drvdata(pdev, indio_dev);
+
+	return 0;
+
+out2:
+	iounmap(addr);
+out1:
+	release_mem_region(res->start, remap_size);
+
+	return ret;
+}
+
+static int ad7606_par_remove(struct platform_device *pdev)
+{
+	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
+	struct resource *res;
+	struct ad7606_state *st = iio_priv(indio_dev);
+
+	ad7606_remove(indio_dev, platform_get_irq(pdev, 0));
+
+	iounmap(st->base_address);
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	release_mem_region(res->start, resource_size(res));
+
+	platform_set_drvdata(pdev, NULL);
+
+	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 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",
+		.owner	= THIS_MODULE,
+		.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");