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@@ -1,494 +0,0 @@
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-/*
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- * ADIS16220 Programmable Digital Vibration Sensor driver
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- *
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- * Copyright 2010 Analog Devices Inc.
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- *
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- * Licensed under the GPL-2 or later.
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- */
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-
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-#include <linux/delay.h>
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-#include <linux/mutex.h>
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-#include <linux/device.h>
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-#include <linux/kernel.h>
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-#include <linux/spi/spi.h>
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-#include <linux/slab.h>
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-#include <linux/sysfs.h>
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-#include <linux/module.h>
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-
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-#include <linux/iio/iio.h>
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-#include <linux/iio/sysfs.h>
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-
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-#include "adis16220.h"
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-
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-static ssize_t adis16220_read_16bit(struct device *dev,
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- struct device_attribute *attr,
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- char *buf)
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-{
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- struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
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- struct iio_dev *indio_dev = dev_to_iio_dev(dev);
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- struct adis16220_state *st = iio_priv(indio_dev);
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- ssize_t ret;
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- u16 val;
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-
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- /* Take the iio_dev status lock */
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- mutex_lock(&indio_dev->mlock);
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- ret = adis_read_reg_16(&st->adis, this_attr->address, &val);
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- mutex_unlock(&indio_dev->mlock);
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- if (ret)
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- return ret;
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- return sprintf(buf, "%u\n", val);
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-}
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-
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-static ssize_t adis16220_write_16bit(struct device *dev,
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- struct device_attribute *attr,
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- const char *buf,
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- size_t len)
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-{
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- struct iio_dev *indio_dev = dev_to_iio_dev(dev);
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- struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
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- struct adis16220_state *st = iio_priv(indio_dev);
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- int ret;
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- u16 val;
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-
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- ret = kstrtou16(buf, 10, &val);
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- if (ret)
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- goto error_ret;
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- ret = adis_write_reg_16(&st->adis, this_attr->address, val);
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-
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-error_ret:
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- return ret ? ret : len;
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-}
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-
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-static int adis16220_capture(struct iio_dev *indio_dev)
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-{
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- struct adis16220_state *st = iio_priv(indio_dev);
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- int ret;
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-
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- /* initiates a manual data capture */
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- ret = adis_write_reg_16(&st->adis, ADIS16220_GLOB_CMD, 0xBF08);
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- if (ret)
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- dev_err(&indio_dev->dev, "problem beginning capture");
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-
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- usleep_range(10000, 11000); /* delay for capture to finish */
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-
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- return ret;
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-}
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-
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-static ssize_t adis16220_write_capture(struct device *dev,
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- struct device_attribute *attr,
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- const char *buf, size_t len)
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-{
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- struct iio_dev *indio_dev = dev_to_iio_dev(dev);
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- bool val;
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- int ret;
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-
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- ret = strtobool(buf, &val);
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- if (ret)
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- return ret;
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- if (!val)
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- return -EINVAL;
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- ret = adis16220_capture(indio_dev);
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- if (ret)
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- return ret;
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-
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- return len;
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-}
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-
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-static ssize_t adis16220_capture_buffer_read(struct iio_dev *indio_dev,
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- char *buf,
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- loff_t off,
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- size_t count,
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- int addr)
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-{
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- struct adis16220_state *st = iio_priv(indio_dev);
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- struct spi_transfer xfers[] = {
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- {
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- .tx_buf = st->tx,
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- .bits_per_word = 8,
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- .len = 2,
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- .cs_change = 1,
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- .delay_usecs = 25,
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- }, {
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- .tx_buf = st->tx,
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- .rx_buf = st->rx,
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- .bits_per_word = 8,
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- .cs_change = 1,
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- .delay_usecs = 25,
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- },
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- };
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- int ret;
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- int i;
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-
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- if (unlikely(!count))
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- return count;
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-
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- if ((off >= ADIS16220_CAPTURE_SIZE) || (count & 1) || (off & 1))
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- return -EINVAL;
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-
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- if (off + count > ADIS16220_CAPTURE_SIZE)
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- count = ADIS16220_CAPTURE_SIZE - off;
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-
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- /* write the begin position of capture buffer */
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- ret = adis_write_reg_16(&st->adis,
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- ADIS16220_CAPT_PNTR,
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- off > 1);
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- if (ret)
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- return -EIO;
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-
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- /* read count/2 values from capture buffer */
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- mutex_lock(&st->buf_lock);
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-
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- for (i = 0; i < count; i += 2) {
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- st->tx[i] = ADIS_READ_REG(addr);
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- st->tx[i + 1] = 0;
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- }
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- xfers[1].len = count;
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-
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- ret = spi_sync_transfer(st->adis.spi, xfers, ARRAY_SIZE(xfers));
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- if (ret) {
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- mutex_unlock(&st->buf_lock);
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- return -EIO;
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- }
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-
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- memcpy(buf, st->rx, count);
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-
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- mutex_unlock(&st->buf_lock);
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- return count;
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-}
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-
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-static ssize_t adis16220_accel_bin_read(struct file *filp, struct kobject *kobj,
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- struct bin_attribute *attr,
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- char *buf,
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- loff_t off,
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- size_t count)
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-{
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- struct iio_dev *indio_dev = dev_to_iio_dev(kobj_to_dev(kobj));
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-
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- return adis16220_capture_buffer_read(indio_dev, buf,
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- off, count,
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- ADIS16220_CAPT_BUFA);
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-}
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-
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-static struct bin_attribute accel_bin = {
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- .attr = {
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- .name = "accel_bin",
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- .mode = S_IRUGO,
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- },
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- .read = adis16220_accel_bin_read,
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- .size = ADIS16220_CAPTURE_SIZE,
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-};
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-
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-static ssize_t adis16220_adc1_bin_read(struct file *filp, struct kobject *kobj,
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- struct bin_attribute *attr,
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- char *buf, loff_t off,
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- size_t count)
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-{
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- struct iio_dev *indio_dev = dev_to_iio_dev(kobj_to_dev(kobj));
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-
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- return adis16220_capture_buffer_read(indio_dev, buf,
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- off, count,
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- ADIS16220_CAPT_BUF1);
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-}
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-
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-static struct bin_attribute adc1_bin = {
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- .attr = {
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- .name = "in0_bin",
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- .mode = S_IRUGO,
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- },
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- .read = adis16220_adc1_bin_read,
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- .size = ADIS16220_CAPTURE_SIZE,
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-};
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-
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-static ssize_t adis16220_adc2_bin_read(struct file *filp, struct kobject *kobj,
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- struct bin_attribute *attr,
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- char *buf, loff_t off,
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- size_t count)
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-{
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- struct iio_dev *indio_dev = dev_to_iio_dev(kobj_to_dev(kobj));
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-
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- return adis16220_capture_buffer_read(indio_dev, buf,
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- off, count,
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- ADIS16220_CAPT_BUF2);
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-}
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-
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-static struct bin_attribute adc2_bin = {
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- .attr = {
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- .name = "in1_bin",
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- .mode = S_IRUGO,
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- },
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- .read = adis16220_adc2_bin_read,
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- .size = ADIS16220_CAPTURE_SIZE,
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-};
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-
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-#define IIO_DEV_ATTR_CAPTURE(_store) \
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- IIO_DEVICE_ATTR(capture, S_IWUSR, NULL, _store, 0)
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-
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-static IIO_DEV_ATTR_CAPTURE(adis16220_write_capture);
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-
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-#define IIO_DEV_ATTR_CAPTURE_COUNT(_mode, _show, _store, _addr) \
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- IIO_DEVICE_ATTR(capture_count, _mode, _show, _store, _addr)
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-
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-static IIO_DEV_ATTR_CAPTURE_COUNT(S_IWUSR | S_IRUGO,
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- adis16220_read_16bit,
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- adis16220_write_16bit,
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- ADIS16220_CAPT_PNTR);
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-
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-enum adis16220_channel {
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- in_supply, in_1, in_2, accel, temp
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-};
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-
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-struct adis16220_address_spec {
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- u8 addr;
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- u8 bits;
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- bool sign;
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-};
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-
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-/* Address / bits / signed */
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-static const struct adis16220_address_spec adis16220_addresses[][3] = {
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- [in_supply] = { { ADIS16220_CAPT_SUPPLY, 12, 0 }, },
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- [in_1] = { { ADIS16220_CAPT_BUF1, 16, 1 },
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- { ADIS16220_AIN1_NULL, 16, 1 },
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- { ADIS16220_CAPT_PEAK1, 16, 1 }, },
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- [in_2] = { { ADIS16220_CAPT_BUF2, 16, 1 },
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- { ADIS16220_AIN2_NULL, 16, 1 },
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- { ADIS16220_CAPT_PEAK2, 16, 1 }, },
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- [accel] = { { ADIS16220_CAPT_BUFA, 16, 1 },
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- { ADIS16220_ACCL_NULL, 16, 1 },
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- { ADIS16220_CAPT_PEAKA, 16, 1 }, },
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- [temp] = { { ADIS16220_CAPT_TEMP, 12, 0 }, }
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-};
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-
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-static int adis16220_read_raw(struct iio_dev *indio_dev,
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- struct iio_chan_spec const *chan,
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- int *val, int *val2,
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- long mask)
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-{
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- struct adis16220_state *st = iio_priv(indio_dev);
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- const struct adis16220_address_spec *addr;
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- int ret = -EINVAL;
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- int addrind = 0;
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- u16 uval;
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- s16 sval;
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- u8 bits;
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-
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- switch (mask) {
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- case IIO_CHAN_INFO_RAW:
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- addrind = 0;
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- break;
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- case IIO_CHAN_INFO_OFFSET:
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- if (chan->type == IIO_TEMP) {
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- *val = 25000 / -470 - 1278; /* 25 C = 1278 */
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- return IIO_VAL_INT;
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- }
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- addrind = 1;
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- break;
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- case IIO_CHAN_INFO_PEAK:
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- addrind = 2;
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- break;
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- case IIO_CHAN_INFO_SCALE:
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- switch (chan->type) {
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- case IIO_TEMP:
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- *val = -470; /* -0.47 C */
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- *val2 = 0;
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- return IIO_VAL_INT_PLUS_MICRO;
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- case IIO_ACCEL:
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- *val2 = IIO_G_TO_M_S_2(19073); /* 19.073 g */
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- return IIO_VAL_INT_PLUS_MICRO;
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- case IIO_VOLTAGE:
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- if (chan->channel == 0) {
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- *val = 1;
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- *val2 = 220700; /* 1.2207 mV */
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- } else {
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- /* Should really be dependent on VDD */
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- *val2 = 305180; /* 305.18 uV */
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- }
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- return IIO_VAL_INT_PLUS_MICRO;
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- default:
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- return -EINVAL;
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- }
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- default:
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- return -EINVAL;
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- }
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- addr = &adis16220_addresses[chan->address][addrind];
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- if (addr->sign) {
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- ret = adis_read_reg_16(&st->adis, addr->addr, &sval);
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- if (ret)
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- return ret;
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- bits = addr->bits;
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- sval &= (1 << bits) - 1;
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- sval = (s16)(sval << (16 - bits)) >> (16 - bits);
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- *val = sval;
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- return IIO_VAL_INT;
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- }
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- ret = adis_read_reg_16(&st->adis, addr->addr, &uval);
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- if (ret)
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- return ret;
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- bits = addr->bits;
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- uval &= (1 << bits) - 1;
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- *val = uval;
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- return IIO_VAL_INT;
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-}
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-
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-static const struct iio_chan_spec adis16220_channels[] = {
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- {
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- .type = IIO_VOLTAGE,
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- .indexed = 1,
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- .channel = 0,
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- .extend_name = "supply",
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- .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
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- BIT(IIO_CHAN_INFO_SCALE),
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- .address = in_supply,
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- }, {
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- .type = IIO_ACCEL,
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- .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
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- BIT(IIO_CHAN_INFO_OFFSET) |
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- BIT(IIO_CHAN_INFO_SCALE) |
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- BIT(IIO_CHAN_INFO_PEAK),
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- .address = accel,
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- }, {
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- .type = IIO_TEMP,
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- .indexed = 1,
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- .channel = 0,
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- .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
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- BIT(IIO_CHAN_INFO_OFFSET) |
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- BIT(IIO_CHAN_INFO_SCALE),
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- .address = temp,
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- }, {
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- .type = IIO_VOLTAGE,
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- .indexed = 1,
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- .channel = 1,
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- .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
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- BIT(IIO_CHAN_INFO_OFFSET) |
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- BIT(IIO_CHAN_INFO_SCALE),
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- .address = in_1,
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- }, {
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- .type = IIO_VOLTAGE,
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- .indexed = 1,
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- .channel = 2,
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- .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
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- .address = in_2,
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- }
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-};
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-
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-static struct attribute *adis16220_attributes[] = {
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- &iio_dev_attr_capture.dev_attr.attr,
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- &iio_dev_attr_capture_count.dev_attr.attr,
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- NULL
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-};
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-
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-static const struct attribute_group adis16220_attribute_group = {
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- .attrs = adis16220_attributes,
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-};
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-
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-static const struct iio_info adis16220_info = {
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- .attrs = &adis16220_attribute_group,
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- .driver_module = THIS_MODULE,
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- .read_raw = &adis16220_read_raw,
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-};
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-
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-static const char * const adis16220_status_error_msgs[] = {
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- [ADIS16220_DIAG_STAT_VIOLATION_BIT] = "Capture period violation/interruption",
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- [ADIS16220_DIAG_STAT_SPI_FAIL_BIT] = "SPI failure",
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- [ADIS16220_DIAG_STAT_FLASH_UPT_BIT] = "Flash update failed",
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- [ADIS16220_DIAG_STAT_POWER_HIGH_BIT] = "Power supply above 3.625V",
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- [ADIS16220_DIAG_STAT_POWER_LOW_BIT] = "Power supply below 3.15V",
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-};
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-
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|
-static const struct adis_data adis16220_data = {
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|
|
- .read_delay = 35,
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|
- .write_delay = 35,
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|
- .msc_ctrl_reg = ADIS16220_MSC_CTRL,
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- .glob_cmd_reg = ADIS16220_GLOB_CMD,
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- .diag_stat_reg = ADIS16220_DIAG_STAT,
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-
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- .self_test_mask = ADIS16220_MSC_CTRL_SELF_TEST_EN,
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- .startup_delay = ADIS16220_STARTUP_DELAY,
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-
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- .status_error_msgs = adis16220_status_error_msgs,
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- .status_error_mask = BIT(ADIS16220_DIAG_STAT_VIOLATION_BIT) |
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- BIT(ADIS16220_DIAG_STAT_SPI_FAIL_BIT) |
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- BIT(ADIS16220_DIAG_STAT_FLASH_UPT_BIT) |
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- BIT(ADIS16220_DIAG_STAT_POWER_HIGH_BIT) |
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- BIT(ADIS16220_DIAG_STAT_POWER_LOW_BIT),
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-};
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-
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|
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-static int adis16220_probe(struct spi_device *spi)
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|
-{
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- int ret;
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- struct adis16220_state *st;
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|
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- struct iio_dev *indio_dev;
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|
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-
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|
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- /* setup the industrialio driver allocated elements */
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- indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
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- if (!indio_dev)
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- return -ENOMEM;
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-
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- st = iio_priv(indio_dev);
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|
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- /* this is only used for removal purposes */
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|
|
- spi_set_drvdata(spi, indio_dev);
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|
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-
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- indio_dev->name = spi->dev.driver->name;
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- indio_dev->dev.parent = &spi->dev;
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|
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- indio_dev->info = &adis16220_info;
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|
|
- indio_dev->modes = INDIO_DIRECT_MODE;
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|
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- indio_dev->channels = adis16220_channels;
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|
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- indio_dev->num_channels = ARRAY_SIZE(adis16220_channels);
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|
|
-
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|
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- ret = devm_iio_device_register(&spi->dev, indio_dev);
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|
|
- if (ret)
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|
|
- return ret;
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|
|
-
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|
|
- ret = sysfs_create_bin_file(&indio_dev->dev.kobj, &accel_bin);
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|
|
- if (ret)
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|
|
- return ret;
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|
|
-
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|
|
- ret = sysfs_create_bin_file(&indio_dev->dev.kobj, &adc1_bin);
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|
|
- if (ret)
|
|
|
- goto error_rm_accel_bin;
|
|
|
-
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|
|
- ret = sysfs_create_bin_file(&indio_dev->dev.kobj, &adc2_bin);
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|
|
- if (ret)
|
|
|
- goto error_rm_adc1_bin;
|
|
|
-
|
|
|
- ret = adis_init(&st->adis, indio_dev, spi, &adis16220_data);
|
|
|
- if (ret)
|
|
|
- goto error_rm_adc2_bin;
|
|
|
- /* Get the device into a sane initial state */
|
|
|
- ret = adis_initial_startup(&st->adis);
|
|
|
- if (ret)
|
|
|
- goto error_rm_adc2_bin;
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|
|
- return 0;
|
|
|
-
|
|
|
-error_rm_adc2_bin:
|
|
|
- sysfs_remove_bin_file(&indio_dev->dev.kobj, &adc2_bin);
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|
|
-error_rm_adc1_bin:
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|
|
- sysfs_remove_bin_file(&indio_dev->dev.kobj, &adc1_bin);
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|
|
-error_rm_accel_bin:
|
|
|
- sysfs_remove_bin_file(&indio_dev->dev.kobj, &accel_bin);
|
|
|
- return ret;
|
|
|
-}
|
|
|
-
|
|
|
-static int adis16220_remove(struct spi_device *spi)
|
|
|
-{
|
|
|
- struct iio_dev *indio_dev = spi_get_drvdata(spi);
|
|
|
-
|
|
|
- sysfs_remove_bin_file(&indio_dev->dev.kobj, &adc2_bin);
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|
|
- sysfs_remove_bin_file(&indio_dev->dev.kobj, &adc1_bin);
|
|
|
- sysfs_remove_bin_file(&indio_dev->dev.kobj, &accel_bin);
|
|
|
-
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-static struct spi_driver adis16220_driver = {
|
|
|
- .driver = {
|
|
|
- .name = "adis16220",
|
|
|
- },
|
|
|
- .probe = adis16220_probe,
|
|
|
- .remove = adis16220_remove,
|
|
|
-};
|
|
|
-module_spi_driver(adis16220_driver);
|
|
|
-
|
|
|
-MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
|
|
|
-MODULE_DESCRIPTION("Analog Devices ADIS16220 Digital Vibration Sensor");
|
|
|
-MODULE_LICENSE("GPL v2");
|
|
|
-MODULE_ALIAS("spi:adis16220");
|
Lars-Peter Clausen