2010-05-07 14:38:59 +00:00
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/*
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* ADIS16209 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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#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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2010-05-23 07:10:35 +00:00
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#include <linux/slab.h>
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2010-05-07 14:38:59 +00:00
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#include <linux/sysfs.h>
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#include <linux/list.h>
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2011-07-03 19:49:50 +00:00
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#include <linux/module.h>
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2010-05-07 14:38:59 +00:00
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2012-04-25 14:54:58 +00:00
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#include <linux/iio/iio.h>
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#include <linux/iio/sysfs.h>
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#include <linux/iio/buffer.h>
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2010-05-07 14:38:59 +00:00
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#include "adis16209.h"
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#define DRIVER_NAME "adis16209"
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/**
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* adis16209_spi_write_reg_8() - write single byte to a register
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2011-05-18 13:41:49 +00:00
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* @indio_dev: iio device associated with actual device
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2010-05-07 14:38:59 +00:00
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* @reg_address: the address of the register to be written
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* @val: the value to write
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**/
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2011-05-18 13:41:49 +00:00
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static int adis16209_spi_write_reg_8(struct iio_dev *indio_dev,
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u8 reg_address,
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u8 val)
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2010-05-07 14:38:59 +00:00
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{
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int ret;
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2011-06-27 12:07:13 +00:00
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struct adis16209_state *st = iio_priv(indio_dev);
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2010-05-07 14:38:59 +00:00
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mutex_lock(&st->buf_lock);
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st->tx[0] = ADIS16209_WRITE_REG(reg_address);
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st->tx[1] = val;
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ret = spi_write(st->us, st->tx, 2);
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mutex_unlock(&st->buf_lock);
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return ret;
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}
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/**
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* adis16209_spi_write_reg_16() - write 2 bytes to a pair of registers
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2011-05-18 13:41:49 +00:00
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* @indio_dev: iio device associated actual device
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2010-05-07 14:38:59 +00:00
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* @reg_address: the address of the lower of the two registers. Second register
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* is assumed to have address one greater.
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* @val: value to be written
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**/
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2011-05-18 13:41:49 +00:00
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static int adis16209_spi_write_reg_16(struct iio_dev *indio_dev,
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u8 lower_reg_address,
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u16 value)
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2010-05-07 14:38:59 +00:00
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{
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int ret;
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struct spi_message msg;
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2011-06-27 12:07:13 +00:00
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struct adis16209_state *st = iio_priv(indio_dev);
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2010-05-07 14:38:59 +00:00
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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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2010-06-04 09:19:54 +00:00
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.delay_usecs = 30,
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2010-05-07 14:38:59 +00:00
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}, {
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.tx_buf = st->tx + 2,
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.bits_per_word = 8,
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.len = 2,
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2010-06-04 09:19:54 +00:00
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.delay_usecs = 30,
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2010-05-07 14:38:59 +00:00
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},
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};
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mutex_lock(&st->buf_lock);
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st->tx[0] = ADIS16209_WRITE_REG(lower_reg_address);
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st->tx[1] = value & 0xFF;
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st->tx[2] = ADIS16209_WRITE_REG(lower_reg_address + 1);
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st->tx[3] = (value >> 8) & 0xFF;
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spi_message_init(&msg);
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spi_message_add_tail(&xfers[0], &msg);
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spi_message_add_tail(&xfers[1], &msg);
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ret = spi_sync(st->us, &msg);
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mutex_unlock(&st->buf_lock);
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return ret;
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}
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/**
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* adis16209_spi_read_reg_16() - read 2 bytes from a 16-bit register
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2011-05-18 13:41:49 +00:00
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* @indio_dev: iio device associated with device
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2010-05-07 14:38:59 +00:00
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* @reg_address: the address of the lower of the two registers. Second register
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* is assumed to have address one greater.
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* @val: somewhere to pass back the value read
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**/
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2011-05-18 13:41:49 +00:00
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static int adis16209_spi_read_reg_16(struct iio_dev *indio_dev,
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u8 lower_reg_address,
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u16 *val)
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2010-05-07 14:38:59 +00:00
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{
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struct spi_message msg;
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2011-06-27 12:07:13 +00:00
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struct adis16209_state *st = iio_priv(indio_dev);
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2010-05-07 14:38:59 +00:00
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int ret;
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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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2010-06-04 09:19:54 +00:00
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.delay_usecs = 30,
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2010-05-07 14:38:59 +00:00
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}, {
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.rx_buf = st->rx,
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.bits_per_word = 8,
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.len = 2,
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2010-06-04 09:19:54 +00:00
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.delay_usecs = 30,
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2010-05-07 14:38:59 +00:00
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},
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};
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mutex_lock(&st->buf_lock);
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st->tx[0] = ADIS16209_READ_REG(lower_reg_address);
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st->tx[1] = 0;
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spi_message_init(&msg);
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spi_message_add_tail(&xfers[0], &msg);
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spi_message_add_tail(&xfers[1], &msg);
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ret = spi_sync(st->us, &msg);
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if (ret) {
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dev_err(&st->us->dev,
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"problem when reading 16 bit register 0x%02X",
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lower_reg_address);
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goto error_ret;
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}
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*val = (st->rx[0] << 8) | st->rx[1];
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error_ret:
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mutex_unlock(&st->buf_lock);
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return ret;
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}
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2011-05-18 13:41:49 +00:00
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static int adis16209_reset(struct iio_dev *indio_dev)
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2010-05-07 14:38:59 +00:00
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{
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int ret;
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2011-05-18 13:41:49 +00:00
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ret = adis16209_spi_write_reg_8(indio_dev,
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2010-05-07 14:38:59 +00:00
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ADIS16209_GLOB_CMD,
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ADIS16209_GLOB_CMD_SW_RESET);
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if (ret)
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2011-05-18 13:41:49 +00:00
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dev_err(&indio_dev->dev, "problem resetting device");
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2010-05-07 14:38:59 +00:00
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return ret;
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}
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2011-05-18 13:41:49 +00:00
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int adis16209_set_irq(struct iio_dev *indio_dev, bool enable)
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2010-05-07 14:38:59 +00:00
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{
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int ret = 0;
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u16 msc;
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2011-05-18 13:41:49 +00:00
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ret = adis16209_spi_read_reg_16(indio_dev, ADIS16209_MSC_CTRL, &msc);
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2010-05-07 14:38:59 +00:00
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if (ret)
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goto error_ret;
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msc |= ADIS16209_MSC_CTRL_ACTIVE_HIGH;
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msc &= ~ADIS16209_MSC_CTRL_DATA_RDY_DIO2;
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if (enable)
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msc |= ADIS16209_MSC_CTRL_DATA_RDY_EN;
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else
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msc &= ~ADIS16209_MSC_CTRL_DATA_RDY_EN;
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2011-05-18 13:41:49 +00:00
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ret = adis16209_spi_write_reg_16(indio_dev, ADIS16209_MSC_CTRL, msc);
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2010-05-07 14:38:59 +00:00
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error_ret:
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return ret;
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}
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2011-05-18 13:41:49 +00:00
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static int adis16209_check_status(struct iio_dev *indio_dev)
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2010-05-07 14:38:59 +00:00
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{
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u16 status;
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int ret;
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2011-05-18 13:41:49 +00:00
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ret = adis16209_spi_read_reg_16(indio_dev,
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ADIS16209_DIAG_STAT, &status);
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2010-05-07 14:38:59 +00:00
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if (ret < 0) {
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2011-05-18 13:41:49 +00:00
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dev_err(&indio_dev->dev, "Reading status failed\n");
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2010-05-07 14:38:59 +00:00
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goto error_ret;
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}
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ret = status & 0x1F;
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if (status & ADIS16209_DIAG_STAT_SELFTEST_FAIL)
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2011-05-18 13:41:49 +00:00
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dev_err(&indio_dev->dev, "Self test failure\n");
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2010-05-07 14:38:59 +00:00
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if (status & ADIS16209_DIAG_STAT_SPI_FAIL)
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2011-05-18 13:41:49 +00:00
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dev_err(&indio_dev->dev, "SPI failure\n");
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2010-05-07 14:38:59 +00:00
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if (status & ADIS16209_DIAG_STAT_FLASH_UPT)
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2011-05-18 13:41:49 +00:00
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dev_err(&indio_dev->dev, "Flash update failed\n");
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2010-05-07 14:38:59 +00:00
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if (status & ADIS16209_DIAG_STAT_POWER_HIGH)
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2011-05-18 13:41:49 +00:00
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dev_err(&indio_dev->dev, "Power supply above 3.625V\n");
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2010-05-07 14:38:59 +00:00
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if (status & ADIS16209_DIAG_STAT_POWER_LOW)
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2011-05-18 13:41:49 +00:00
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dev_err(&indio_dev->dev, "Power supply below 3.15V\n");
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2010-05-07 14:38:59 +00:00
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error_ret:
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return ret;
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}
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2011-05-18 13:41:49 +00:00
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static int adis16209_self_test(struct iio_dev *indio_dev)
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2010-05-07 14:38:59 +00:00
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{
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int ret;
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2011-05-18 13:41:49 +00:00
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ret = adis16209_spi_write_reg_16(indio_dev,
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2010-05-07 14:38:59 +00:00
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ADIS16209_MSC_CTRL,
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ADIS16209_MSC_CTRL_SELF_TEST_EN);
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if (ret) {
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2011-05-18 13:41:49 +00:00
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dev_err(&indio_dev->dev, "problem starting self test");
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2010-05-07 14:38:59 +00:00
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goto err_ret;
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}
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2011-05-18 13:41:49 +00:00
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adis16209_check_status(indio_dev);
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2010-05-07 14:38:59 +00:00
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err_ret:
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return ret;
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}
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2011-05-18 13:41:49 +00:00
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static int adis16209_initial_setup(struct iio_dev *indio_dev)
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2010-05-07 14:38:59 +00:00
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{
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int ret;
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/* Disable IRQ */
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2011-05-18 13:41:49 +00:00
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ret = adis16209_set_irq(indio_dev, false);
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2010-05-07 14:38:59 +00:00
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if (ret) {
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2011-05-18 13:41:49 +00:00
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dev_err(&indio_dev->dev, "disable irq failed");
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2010-05-07 14:38:59 +00:00
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goto err_ret;
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}
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/* Do self test */
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2011-05-18 13:41:49 +00:00
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ret = adis16209_self_test(indio_dev);
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2010-05-07 14:38:59 +00:00
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if (ret) {
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2011-05-18 13:41:49 +00:00
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dev_err(&indio_dev->dev, "self test failure");
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2010-05-07 14:38:59 +00:00
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goto err_ret;
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}
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/* Read status register to check the result */
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2011-05-18 13:41:49 +00:00
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ret = adis16209_check_status(indio_dev);
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2010-05-07 14:38:59 +00:00
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if (ret) {
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2011-05-18 13:41:49 +00:00
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adis16209_reset(indio_dev);
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dev_err(&indio_dev->dev, "device not playing ball -> reset");
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2010-05-07 14:38:59 +00:00
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msleep(ADIS16209_STARTUP_DELAY);
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2011-05-18 13:41:49 +00:00
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ret = adis16209_check_status(indio_dev);
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2010-05-07 14:38:59 +00:00
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if (ret) {
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2011-05-18 13:41:49 +00:00
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dev_err(&indio_dev->dev, "giving up");
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2010-05-07 14:38:59 +00:00
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goto err_ret;
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}
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}
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err_ret:
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return ret;
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}
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2011-05-18 13:41:49 +00:00
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enum adis16209_chan {
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in_supply,
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temp,
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accel_x,
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accel_y,
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incli_x,
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incli_y,
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in_aux,
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rot,
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};
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static const u8 adis16209_addresses[8][2] = {
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[in_supply] = { ADIS16209_SUPPLY_OUT },
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[in_aux] = { ADIS16209_AUX_ADC },
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[accel_x] = { ADIS16209_XACCL_OUT, ADIS16209_XACCL_NULL },
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[accel_y] = { ADIS16209_YACCL_OUT, ADIS16209_YACCL_NULL },
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[incli_x] = { ADIS16209_XINCL_OUT, ADIS16209_XINCL_NULL },
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[incli_y] = { ADIS16209_YINCL_OUT, ADIS16209_YINCL_NULL },
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[rot] = { ADIS16209_ROT_OUT },
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[temp] = { ADIS16209_TEMP_OUT },
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};
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static int adis16209_write_raw(struct iio_dev *indio_dev,
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struct iio_chan_spec const *chan,
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int val,
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int val2,
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long mask)
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{
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int bits;
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s16 val16;
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u8 addr;
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switch (mask) {
|
2011-10-26 16:41:36 +00:00
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case IIO_CHAN_INFO_CALIBBIAS:
|
2011-05-18 13:41:49 +00:00
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switch (chan->type) {
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case IIO_ACCEL:
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case IIO_INCLI:
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bits = 14;
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break;
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default:
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return -EINVAL;
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};
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val16 = val & ((1 << bits) - 1);
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addr = adis16209_addresses[chan->address][1];
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return adis16209_spi_write_reg_16(indio_dev, addr, val16);
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}
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return -EINVAL;
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}
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|
|
static int adis16209_read_raw(struct iio_dev *indio_dev,
|
|
|
|
struct iio_chan_spec const *chan,
|
|
|
|
int *val, int *val2,
|
|
|
|
long mask)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
int bits;
|
|
|
|
u8 addr;
|
|
|
|
s16 val16;
|
|
|
|
|
|
|
|
switch (mask) {
|
2012-04-15 16:41:17 +00:00
|
|
|
case IIO_CHAN_INFO_RAW:
|
2011-05-18 13:41:49 +00:00
|
|
|
mutex_lock(&indio_dev->mlock);
|
|
|
|
addr = adis16209_addresses[chan->address][0];
|
|
|
|
ret = adis16209_spi_read_reg_16(indio_dev, addr, &val16);
|
2011-07-30 08:45:09 +00:00
|
|
|
if (ret) {
|
|
|
|
mutex_unlock(&indio_dev->mlock);
|
2011-05-18 13:41:49 +00:00
|
|
|
return ret;
|
2011-07-30 08:45:09 +00:00
|
|
|
}
|
2011-05-18 13:41:49 +00:00
|
|
|
|
|
|
|
if (val16 & ADIS16209_ERROR_ACTIVE) {
|
|
|
|
ret = adis16209_check_status(indio_dev);
|
2011-07-30 08:45:09 +00:00
|
|
|
if (ret) {
|
|
|
|
mutex_unlock(&indio_dev->mlock);
|
2011-05-18 13:41:49 +00:00
|
|
|
return ret;
|
2011-07-30 08:45:09 +00:00
|
|
|
}
|
2011-05-18 13:41:49 +00:00
|
|
|
}
|
|
|
|
val16 = val16 & ((1 << chan->scan_type.realbits) - 1);
|
|
|
|
if (chan->scan_type.sign == 's')
|
|
|
|
val16 = (s16)(val16 <<
|
|
|
|
(16 - chan->scan_type.realbits)) >>
|
|
|
|
(16 - chan->scan_type.realbits);
|
|
|
|
*val = val16;
|
|
|
|
mutex_unlock(&indio_dev->mlock);
|
|
|
|
return IIO_VAL_INT;
|
2011-10-26 16:41:36 +00:00
|
|
|
case IIO_CHAN_INFO_SCALE:
|
2011-05-18 13:41:49 +00:00
|
|
|
switch (chan->type) {
|
2011-09-27 08:56:41 +00:00
|
|
|
case IIO_VOLTAGE:
|
2011-05-18 13:41:49 +00:00
|
|
|
*val = 0;
|
|
|
|
if (chan->channel == 0)
|
|
|
|
*val2 = 305180;
|
|
|
|
else
|
|
|
|
*val2 = 610500;
|
|
|
|
return IIO_VAL_INT_PLUS_MICRO;
|
|
|
|
case IIO_TEMP:
|
|
|
|
*val = 0;
|
|
|
|
*val2 = -470000;
|
|
|
|
return IIO_VAL_INT_PLUS_MICRO;
|
|
|
|
case IIO_ACCEL:
|
|
|
|
*val = 0;
|
|
|
|
*val2 = 2394;
|
|
|
|
return IIO_VAL_INT_PLUS_MICRO;
|
|
|
|
case IIO_INCLI:
|
|
|
|
*val = 0;
|
|
|
|
*val2 = 436;
|
|
|
|
return IIO_VAL_INT_PLUS_MICRO;
|
|
|
|
default:
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
break;
|
2011-10-26 16:41:36 +00:00
|
|
|
case IIO_CHAN_INFO_OFFSET:
|
2011-05-18 13:41:49 +00:00
|
|
|
*val = 25;
|
|
|
|
return IIO_VAL_INT;
|
2011-10-26 16:41:36 +00:00
|
|
|
case IIO_CHAN_INFO_CALIBBIAS:
|
2011-05-18 13:41:49 +00:00
|
|
|
switch (chan->type) {
|
|
|
|
case IIO_ACCEL:
|
|
|
|
bits = 14;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
return -EINVAL;
|
|
|
|
};
|
|
|
|
mutex_lock(&indio_dev->mlock);
|
|
|
|
addr = adis16209_addresses[chan->address][1];
|
|
|
|
ret = adis16209_spi_read_reg_16(indio_dev, addr, &val16);
|
|
|
|
if (ret) {
|
|
|
|
mutex_unlock(&indio_dev->mlock);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
val16 &= (1 << bits) - 1;
|
|
|
|
val16 = (s16)(val16 << (16 - bits)) >> (16 - bits);
|
|
|
|
*val = val16;
|
|
|
|
mutex_unlock(&indio_dev->mlock);
|
|
|
|
return IIO_VAL_INT;
|
|
|
|
}
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
2012-08-09 07:51:00 +00:00
|
|
|
static const struct iio_chan_spec adis16209_channels[] = {
|
2012-04-13 09:42:50 +00:00
|
|
|
{
|
|
|
|
.type = IIO_VOLTAGE,
|
|
|
|
.indexed = 1,
|
|
|
|
.channel = 0,
|
|
|
|
.extend_name = "supply",
|
2012-04-15 16:41:17 +00:00
|
|
|
.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
|
|
|
|
IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
|
2012-04-13 09:42:50 +00:00
|
|
|
.address = in_supply,
|
|
|
|
.scan_index = ADIS16209_SCAN_SUPPLY,
|
|
|
|
.scan_type = {
|
|
|
|
.sign = 'u',
|
|
|
|
.realbits = 14,
|
|
|
|
.storagebits = 16,
|
|
|
|
},
|
|
|
|
}, {
|
|
|
|
.type = IIO_TEMP,
|
|
|
|
.indexed = 0,
|
|
|
|
.channel = 0,
|
2012-04-15 16:41:17 +00:00
|
|
|
.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
|
|
|
|
IIO_CHAN_INFO_SCALE_SEPARATE_BIT |
|
2012-04-13 09:42:50 +00:00
|
|
|
IIO_CHAN_INFO_OFFSET_SEPARATE_BIT,
|
|
|
|
.address = temp,
|
|
|
|
.scan_index = ADIS16209_SCAN_TEMP,
|
|
|
|
.scan_type = {
|
|
|
|
.sign = 'u',
|
|
|
|
.realbits = 12,
|
|
|
|
.storagebits = 16,
|
|
|
|
},
|
|
|
|
}, {
|
|
|
|
.type = IIO_ACCEL,
|
|
|
|
.modified = 1,
|
|
|
|
.channel2 = IIO_MOD_X,
|
2012-04-15 16:41:17 +00:00
|
|
|
.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
|
|
|
|
IIO_CHAN_INFO_SCALE_SHARED_BIT |
|
2012-04-13 09:42:50 +00:00
|
|
|
IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT,
|
|
|
|
.address = accel_x,
|
|
|
|
.scan_index = ADIS16209_SCAN_ACC_X,
|
|
|
|
.scan_type = {
|
|
|
|
.sign = 's',
|
|
|
|
.realbits = 14,
|
|
|
|
.storagebits = 16,
|
|
|
|
},
|
|
|
|
}, {
|
|
|
|
.type = IIO_ACCEL,
|
|
|
|
.modified = 1,
|
|
|
|
.channel2 = IIO_MOD_Y,
|
2012-04-15 16:41:17 +00:00
|
|
|
.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
|
|
|
|
IIO_CHAN_INFO_SCALE_SHARED_BIT |
|
2012-04-13 09:42:50 +00:00
|
|
|
IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT,
|
|
|
|
.address = accel_y,
|
|
|
|
.scan_index = ADIS16209_SCAN_ACC_Y,
|
|
|
|
.scan_type = {
|
|
|
|
.sign = 's',
|
|
|
|
.realbits = 14,
|
|
|
|
.storagebits = 16,
|
|
|
|
},
|
|
|
|
}, {
|
|
|
|
.type = IIO_VOLTAGE,
|
|
|
|
.indexed = 1,
|
|
|
|
.channel = 1,
|
2012-04-15 16:41:17 +00:00
|
|
|
.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
|
|
|
|
IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
|
2012-04-13 09:42:50 +00:00
|
|
|
.address = in_aux,
|
|
|
|
.scan_index = ADIS16209_SCAN_AUX_ADC,
|
|
|
|
.scan_type = {
|
|
|
|
.sign = 'u',
|
|
|
|
.realbits = 12,
|
|
|
|
.storagebits = 16,
|
|
|
|
},
|
|
|
|
}, {
|
|
|
|
.type = IIO_INCLI,
|
|
|
|
.modified = 1,
|
|
|
|
.channel2 = IIO_MOD_X,
|
2012-04-15 16:41:17 +00:00
|
|
|
.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
|
|
|
|
IIO_CHAN_INFO_SCALE_SHARED_BIT,
|
2012-04-13 09:42:50 +00:00
|
|
|
.address = incli_x,
|
|
|
|
.scan_index = ADIS16209_SCAN_INCLI_X,
|
|
|
|
.scan_type = {
|
|
|
|
.sign = 's',
|
|
|
|
.realbits = 14,
|
|
|
|
.storagebits = 16,
|
|
|
|
},
|
|
|
|
}, {
|
|
|
|
.type = IIO_INCLI,
|
|
|
|
.modified = 1,
|
|
|
|
.channel2 = IIO_MOD_Y,
|
2012-04-15 16:41:17 +00:00
|
|
|
.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
|
|
|
|
IIO_CHAN_INFO_SCALE_SHARED_BIT,
|
2012-04-13 09:42:50 +00:00
|
|
|
.address = incli_y,
|
|
|
|
.scan_index = ADIS16209_SCAN_INCLI_Y,
|
|
|
|
.scan_type = {
|
|
|
|
.sign = 's',
|
|
|
|
.realbits = 14,
|
|
|
|
.storagebits = 16,
|
|
|
|
},
|
|
|
|
}, {
|
|
|
|
.type = IIO_ROT,
|
|
|
|
.modified = 1,
|
|
|
|
.channel2 = IIO_MOD_X,
|
2012-04-15 16:41:17 +00:00
|
|
|
.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
|
2012-04-13 09:42:50 +00:00
|
|
|
.address = rot,
|
|
|
|
.scan_index = ADIS16209_SCAN_ROT,
|
|
|
|
.scan_type = {
|
|
|
|
.sign = 's',
|
|
|
|
.realbits = 14,
|
|
|
|
.storagebits = 16,
|
|
|
|
},
|
|
|
|
},
|
2011-05-18 13:41:49 +00:00
|
|
|
IIO_CHAN_SOFT_TIMESTAMP(8)
|
|
|
|
};
|
2010-05-07 14:38:59 +00:00
|
|
|
|
2011-05-18 13:42:37 +00:00
|
|
|
static const struct iio_info adis16209_info = {
|
|
|
|
.read_raw = &adis16209_read_raw,
|
|
|
|
.write_raw = &adis16209_write_raw,
|
|
|
|
.driver_module = THIS_MODULE,
|
|
|
|
};
|
|
|
|
|
2010-05-07 14:38:59 +00:00
|
|
|
static int __devinit adis16209_probe(struct spi_device *spi)
|
|
|
|
{
|
2011-09-02 16:14:40 +00:00
|
|
|
int ret;
|
2011-06-27 12:07:13 +00:00
|
|
|
struct adis16209_state *st;
|
|
|
|
struct iio_dev *indio_dev;
|
2010-05-07 14:38:59 +00:00
|
|
|
|
2011-06-27 12:07:13 +00:00
|
|
|
/* setup the industrialio driver allocated elements */
|
2012-04-26 11:35:01 +00:00
|
|
|
indio_dev = iio_device_alloc(sizeof(*st));
|
2011-06-27 12:07:13 +00:00
|
|
|
if (indio_dev == NULL) {
|
2010-05-07 14:38:59 +00:00
|
|
|
ret = -ENOMEM;
|
2011-06-27 12:07:13 +00:00
|
|
|
goto error_ret;
|
2010-05-07 14:38:59 +00:00
|
|
|
}
|
2011-06-27 12:07:13 +00:00
|
|
|
st = iio_priv(indio_dev);
|
|
|
|
/* this is only used for removal purposes */
|
|
|
|
spi_set_drvdata(spi, indio_dev);
|
2010-05-07 14:38:59 +00:00
|
|
|
st->us = spi;
|
|
|
|
mutex_init(&st->buf_lock);
|
|
|
|
|
2011-06-27 12:07:13 +00:00
|
|
|
indio_dev->name = spi->dev.driver->name;
|
|
|
|
indio_dev->dev.parent = &spi->dev;
|
|
|
|
indio_dev->info = &adis16209_info;
|
|
|
|
indio_dev->channels = adis16209_channels;
|
|
|
|
indio_dev->num_channels = ARRAY_SIZE(adis16209_channels);
|
|
|
|
indio_dev->modes = INDIO_DIRECT_MODE;
|
2010-05-07 14:38:59 +00:00
|
|
|
|
2011-06-27 12:07:13 +00:00
|
|
|
ret = adis16209_configure_ring(indio_dev);
|
2010-05-07 14:38:59 +00:00
|
|
|
if (ret)
|
|
|
|
goto error_free_dev;
|
|
|
|
|
2011-09-21 10:15:57 +00:00
|
|
|
ret = iio_buffer_register(indio_dev,
|
|
|
|
adis16209_channels,
|
|
|
|
ARRAY_SIZE(adis16209_channels));
|
2010-05-07 14:38:59 +00:00
|
|
|
if (ret) {
|
|
|
|
printk(KERN_ERR "failed to initialize the ring\n");
|
|
|
|
goto error_unreg_ring_funcs;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (spi->irq) {
|
2011-06-27 12:07:13 +00:00
|
|
|
ret = adis16209_probe_trigger(indio_dev);
|
2010-05-07 14:38:59 +00:00
|
|
|
if (ret)
|
2011-04-18 11:59:05 +00:00
|
|
|
goto error_uninitialize_ring;
|
2010-05-07 14:38:59 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Get the device into a sane initial state */
|
2011-06-27 12:07:13 +00:00
|
|
|
ret = adis16209_initial_setup(indio_dev);
|
2010-05-07 14:38:59 +00:00
|
|
|
if (ret)
|
|
|
|
goto error_remove_trigger;
|
2011-09-02 16:14:40 +00:00
|
|
|
ret = iio_device_register(indio_dev);
|
|
|
|
if (ret)
|
|
|
|
goto error_remove_trigger;
|
|
|
|
|
2010-05-07 14:38:59 +00:00
|
|
|
return 0;
|
|
|
|
|
|
|
|
error_remove_trigger:
|
2011-06-27 12:07:13 +00:00
|
|
|
adis16209_remove_trigger(indio_dev);
|
2010-05-07 14:38:59 +00:00
|
|
|
error_uninitialize_ring:
|
2011-09-21 10:15:57 +00:00
|
|
|
iio_buffer_unregister(indio_dev);
|
2010-05-07 14:38:59 +00:00
|
|
|
error_unreg_ring_funcs:
|
2011-06-27 12:07:13 +00:00
|
|
|
adis16209_unconfigure_ring(indio_dev);
|
2010-05-07 14:38:59 +00:00
|
|
|
error_free_dev:
|
2012-04-26 11:35:01 +00:00
|
|
|
iio_device_free(indio_dev);
|
2010-05-07 14:38:59 +00:00
|
|
|
error_ret:
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2012-08-17 17:29:00 +00:00
|
|
|
static int __devexit adis16209_remove(struct spi_device *spi)
|
2010-05-07 14:38:59 +00:00
|
|
|
{
|
2011-06-27 12:07:13 +00:00
|
|
|
struct iio_dev *indio_dev = spi_get_drvdata(spi);
|
2010-05-07 14:38:59 +00:00
|
|
|
|
2011-10-14 13:46:58 +00:00
|
|
|
iio_device_unregister(indio_dev);
|
2010-05-07 14:38:59 +00:00
|
|
|
adis16209_remove_trigger(indio_dev);
|
2011-09-21 10:15:57 +00:00
|
|
|
iio_buffer_unregister(indio_dev);
|
2010-05-07 14:38:59 +00:00
|
|
|
adis16209_unconfigure_ring(indio_dev);
|
2012-04-26 11:35:01 +00:00
|
|
|
iio_device_free(indio_dev);
|
2010-05-07 14:38:59 +00:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct spi_driver adis16209_driver = {
|
|
|
|
.driver = {
|
|
|
|
.name = "adis16209",
|
|
|
|
.owner = THIS_MODULE,
|
|
|
|
},
|
|
|
|
.probe = adis16209_probe,
|
|
|
|
.remove = __devexit_p(adis16209_remove),
|
|
|
|
};
|
2011-11-16 09:13:39 +00:00
|
|
|
module_spi_driver(adis16209_driver);
|
2010-05-07 14:38:59 +00:00
|
|
|
|
|
|
|
MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
|
|
|
|
MODULE_DESCRIPTION("Analog Devices ADIS16209 Digital Vibration Sensor driver");
|
|
|
|
MODULE_LICENSE("GPL v2");
|
2011-11-16 07:53:31 +00:00
|
|
|
MODULE_ALIAS("spi:adis16209");
|