2010-10-27 19:44:16 -06:00
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/*
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2011-05-18 07:42:05 -06:00
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* ADE7758 Poly Phase Multifunction Energy Metering IC driver
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2010-10-27 19:44:16 -06:00
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*
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2011-05-18 07:42:05 -06:00
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* Copyright 2010-2011 Analog Devices Inc.
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2010-10-27 19:44:16 -06:00
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*
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2011-05-18 07:42:05 -06:00
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* Licensed under the GPL-2.
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2010-10-27 19:44:16 -06:00
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*/
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#include <linux/interrupt.h>
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#include <linux/irq.h>
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#include <linux/gpio.h>
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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/list.h>
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#include "../iio.h"
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#include "../sysfs.h"
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#include "meter.h"
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#include "ade7758.h"
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2011-04-18 05:59:06 -06:00
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static int ade7758_spi_write_reg_8(struct device *dev,
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2010-10-27 19:44:16 -06:00
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u8 reg_address,
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u8 val)
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{
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int ret;
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struct iio_dev *indio_dev = dev_get_drvdata(dev);
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struct ade7758_state *st = iio_dev_get_devdata(indio_dev);
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mutex_lock(&st->buf_lock);
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st->tx[0] = ADE7758_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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static int ade7758_spi_write_reg_16(struct device *dev,
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u8 reg_address,
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u16 value)
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{
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int ret;
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struct spi_message msg;
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struct iio_dev *indio_dev = dev_get_drvdata(dev);
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struct ade7758_state *st = iio_dev_get_devdata(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 = 3,
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}
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};
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mutex_lock(&st->buf_lock);
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st->tx[0] = ADE7758_WRITE_REG(reg_address);
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st->tx[1] = (value >> 8) & 0xFF;
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st->tx[2] = value & 0xFF;
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spi_message_init(&msg);
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spi_message_add_tail(xfers, &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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static int ade7758_spi_write_reg_24(struct device *dev,
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u8 reg_address,
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u32 value)
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{
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int ret;
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struct spi_message msg;
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struct iio_dev *indio_dev = dev_get_drvdata(dev);
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struct ade7758_state *st = iio_dev_get_devdata(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 = 4,
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}
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};
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mutex_lock(&st->buf_lock);
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st->tx[0] = ADE7758_WRITE_REG(reg_address);
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st->tx[1] = (value >> 16) & 0xFF;
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st->tx[2] = (value >> 8) & 0xFF;
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st->tx[3] = value & 0xFF;
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spi_message_init(&msg);
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spi_message_add_tail(xfers, &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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2011-05-18 07:42:04 -06:00
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int ade7758_spi_read_reg_8(struct device *dev,
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2010-10-27 19:44:16 -06:00
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u8 reg_address,
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u8 *val)
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{
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struct spi_message msg;
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struct iio_dev *indio_dev = dev_get_drvdata(dev);
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struct ade7758_state *st = iio_dev_get_devdata(indio_dev);
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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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2011-05-18 07:42:04 -06:00
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.bits_per_word = 8,
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.len = 1,
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.delay_usecs = 4,
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},
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{
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.tx_buf = &st->tx[1],
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2010-10-27 19:44:16 -06:00
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.rx_buf = st->rx,
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.bits_per_word = 8,
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2011-05-18 07:42:04 -06:00
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.len = 1,
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2010-10-27 19:44:16 -06:00
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},
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};
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mutex_lock(&st->buf_lock);
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st->tx[0] = ADE7758_READ_REG(reg_address);
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st->tx[1] = 0;
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spi_message_init(&msg);
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2011-05-18 07:42:04 -06:00
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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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2010-10-27 19:44:16 -06:00
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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, "problem when reading 8 bit register 0x%02X",
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reg_address);
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goto error_ret;
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}
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2011-05-18 07:42:04 -06:00
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*val = st->rx[0];
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2010-10-27 19:44:16 -06:00
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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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static int ade7758_spi_read_reg_16(struct device *dev,
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u8 reg_address,
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u16 *val)
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{
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struct spi_message msg;
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struct iio_dev *indio_dev = dev_get_drvdata(dev);
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struct ade7758_state *st = iio_dev_get_devdata(indio_dev);
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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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2011-05-18 07:42:04 -06:00
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.bits_per_word = 8,
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.len = 1,
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.delay_usecs = 4,
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},
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{
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.tx_buf = &st->tx[1],
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2010-10-27 19:44:16 -06:00
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.rx_buf = st->rx,
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.bits_per_word = 8,
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2011-05-18 07:42:04 -06:00
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.len = 2,
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2010-10-27 19:44:16 -06:00
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},
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};
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2011-05-18 07:42:04 -06:00
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2010-10-27 19:44:16 -06:00
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mutex_lock(&st->buf_lock);
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st->tx[0] = ADE7758_READ_REG(reg_address);
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st->tx[1] = 0;
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st->tx[2] = 0;
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spi_message_init(&msg);
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2011-05-18 07:42:04 -06:00
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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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2010-10-27 19:44:16 -06:00
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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, "problem when reading 16 bit register 0x%02X",
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reg_address);
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goto error_ret;
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}
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2011-05-18 07:42:04 -06:00
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*val = (st->rx[0] << 8) | st->rx[1];
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2010-10-27 19:44:16 -06:00
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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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static int ade7758_spi_read_reg_24(struct device *dev,
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u8 reg_address,
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u32 *val)
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{
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struct spi_message msg;
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struct iio_dev *indio_dev = dev_get_drvdata(dev);
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struct ade7758_state *st = iio_dev_get_devdata(indio_dev);
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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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2011-05-18 07:42:04 -06:00
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.bits_per_word = 8,
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.len = 1,
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.delay_usecs = 4,
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},
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{
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.tx_buf = &st->tx[1],
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2010-10-27 19:44:16 -06:00
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.rx_buf = st->rx,
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.bits_per_word = 8,
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2011-05-18 07:42:04 -06:00
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.len = 3,
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2010-10-27 19:44:16 -06:00
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},
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};
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mutex_lock(&st->buf_lock);
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st->tx[0] = ADE7758_READ_REG(reg_address);
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st->tx[1] = 0;
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st->tx[2] = 0;
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st->tx[3] = 0;
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spi_message_init(&msg);
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2011-05-18 07:42:04 -06:00
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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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2010-10-27 19:44:16 -06:00
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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, "problem when reading 24 bit register 0x%02X",
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reg_address);
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goto error_ret;
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}
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2011-05-18 07:42:04 -06:00
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*val = (st->rx[0] << 16) | (st->rx[1] << 8) | st->rx[2];
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2010-10-27 19:44:16 -06:00
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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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static ssize_t ade7758_read_8bit(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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int ret;
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u8 val = 0;
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struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
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ret = ade7758_spi_read_reg_8(dev, this_attr->address, &val);
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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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static ssize_t ade7758_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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int ret;
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u16 val = 0;
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struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
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ret = ade7758_spi_read_reg_16(dev, this_attr->address, &val);
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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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static ssize_t ade7758_read_24bit(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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int ret;
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u32 val = 0;
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struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
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ret = ade7758_spi_read_reg_24(dev, this_attr->address, &val);
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if (ret)
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return ret;
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return sprintf(buf, "%u\n", val & 0xFFFFFF);
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}
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static ssize_t ade7758_write_8bit(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_attr *this_attr = to_iio_dev_attr(attr);
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int ret;
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long val;
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ret = strict_strtol(buf, 10, &val);
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if (ret)
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goto error_ret;
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ret = ade7758_spi_write_reg_8(dev, this_attr->address, val);
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error_ret:
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return ret ? ret : len;
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}
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static ssize_t ade7758_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_attr *this_attr = to_iio_dev_attr(attr);
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int ret;
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long val;
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ret = strict_strtol(buf, 10, &val);
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if (ret)
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goto error_ret;
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ret = ade7758_spi_write_reg_16(dev, this_attr->address, val);
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error_ret:
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return ret ? ret : len;
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}
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|
2011-04-18 05:59:06 -06:00
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static int ade7758_reset(struct device *dev)
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2010-10-27 19:44:16 -06:00
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{
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int ret;
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u8 val;
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ade7758_spi_read_reg_8(dev,
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ADE7758_OPMODE,
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&val);
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val |= 1 << 6; /* Software Chip Reset */
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ret = ade7758_spi_write_reg_8(dev,
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ADE7758_OPMODE,
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val);
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return ret;
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}
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static ssize_t ade7758_write_reset(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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if (len < 1)
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return -1;
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switch (buf[0]) {
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case '1':
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case 'y':
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case 'Y':
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return ade7758_reset(dev);
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}
|
2011-05-18 07:42:05 -06:00
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return len;
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2010-10-27 19:44:16 -06:00
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}
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static IIO_DEV_ATTR_VPEAK(S_IWUSR | S_IRUGO,
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ade7758_read_8bit,
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ade7758_write_8bit,
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ADE7758_VPEAK);
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static IIO_DEV_ATTR_IPEAK(S_IWUSR | S_IRUGO,
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ade7758_read_8bit,
|
|
|
|
ade7758_write_8bit,
|
|
|
|
ADE7758_VPEAK);
|
|
|
|
static IIO_DEV_ATTR_APHCAL(S_IWUSR | S_IRUGO,
|
|
|
|
ade7758_read_8bit,
|
|
|
|
ade7758_write_8bit,
|
|
|
|
ADE7758_APHCAL);
|
|
|
|
static IIO_DEV_ATTR_BPHCAL(S_IWUSR | S_IRUGO,
|
|
|
|
ade7758_read_8bit,
|
|
|
|
ade7758_write_8bit,
|
|
|
|
ADE7758_BPHCAL);
|
|
|
|
static IIO_DEV_ATTR_CPHCAL(S_IWUSR | S_IRUGO,
|
|
|
|
ade7758_read_8bit,
|
|
|
|
ade7758_write_8bit,
|
|
|
|
ADE7758_CPHCAL);
|
|
|
|
static IIO_DEV_ATTR_WDIV(S_IWUSR | S_IRUGO,
|
|
|
|
ade7758_read_8bit,
|
|
|
|
ade7758_write_8bit,
|
|
|
|
ADE7758_WDIV);
|
|
|
|
static IIO_DEV_ATTR_VADIV(S_IWUSR | S_IRUGO,
|
|
|
|
ade7758_read_8bit,
|
|
|
|
ade7758_write_8bit,
|
|
|
|
ADE7758_VADIV);
|
|
|
|
static IIO_DEV_ATTR_AIRMS(S_IRUGO,
|
|
|
|
ade7758_read_24bit,
|
|
|
|
NULL,
|
|
|
|
ADE7758_AIRMS);
|
|
|
|
static IIO_DEV_ATTR_BIRMS(S_IRUGO,
|
|
|
|
ade7758_read_24bit,
|
|
|
|
NULL,
|
|
|
|
ADE7758_BIRMS);
|
|
|
|
static IIO_DEV_ATTR_CIRMS(S_IRUGO,
|
|
|
|
ade7758_read_24bit,
|
|
|
|
NULL,
|
|
|
|
ADE7758_CIRMS);
|
|
|
|
static IIO_DEV_ATTR_AVRMS(S_IRUGO,
|
|
|
|
ade7758_read_24bit,
|
|
|
|
NULL,
|
|
|
|
ADE7758_AVRMS);
|
|
|
|
static IIO_DEV_ATTR_BVRMS(S_IRUGO,
|
|
|
|
ade7758_read_24bit,
|
|
|
|
NULL,
|
|
|
|
ADE7758_BVRMS);
|
|
|
|
static IIO_DEV_ATTR_CVRMS(S_IRUGO,
|
|
|
|
ade7758_read_24bit,
|
|
|
|
NULL,
|
|
|
|
ADE7758_CVRMS);
|
|
|
|
static IIO_DEV_ATTR_AIRMSOS(S_IWUSR | S_IRUGO,
|
|
|
|
ade7758_read_16bit,
|
|
|
|
ade7758_write_16bit,
|
|
|
|
ADE7758_AIRMSOS);
|
|
|
|
static IIO_DEV_ATTR_BIRMSOS(S_IWUSR | S_IRUGO,
|
|
|
|
ade7758_read_16bit,
|
|
|
|
ade7758_write_16bit,
|
|
|
|
ADE7758_BIRMSOS);
|
|
|
|
static IIO_DEV_ATTR_CIRMSOS(S_IWUSR | S_IRUGO,
|
|
|
|
ade7758_read_16bit,
|
|
|
|
ade7758_write_16bit,
|
|
|
|
ADE7758_CIRMSOS);
|
|
|
|
static IIO_DEV_ATTR_AVRMSOS(S_IWUSR | S_IRUGO,
|
|
|
|
ade7758_read_16bit,
|
|
|
|
ade7758_write_16bit,
|
|
|
|
ADE7758_AVRMSOS);
|
|
|
|
static IIO_DEV_ATTR_BVRMSOS(S_IWUSR | S_IRUGO,
|
|
|
|
ade7758_read_16bit,
|
|
|
|
ade7758_write_16bit,
|
|
|
|
ADE7758_BVRMSOS);
|
|
|
|
static IIO_DEV_ATTR_CVRMSOS(S_IWUSR | S_IRUGO,
|
|
|
|
ade7758_read_16bit,
|
|
|
|
ade7758_write_16bit,
|
|
|
|
ADE7758_CVRMSOS);
|
|
|
|
static IIO_DEV_ATTR_AIGAIN(S_IWUSR | S_IRUGO,
|
|
|
|
ade7758_read_16bit,
|
|
|
|
ade7758_write_16bit,
|
|
|
|
ADE7758_AIGAIN);
|
|
|
|
static IIO_DEV_ATTR_BIGAIN(S_IWUSR | S_IRUGO,
|
|
|
|
ade7758_read_16bit,
|
|
|
|
ade7758_write_16bit,
|
|
|
|
ADE7758_BIGAIN);
|
|
|
|
static IIO_DEV_ATTR_CIGAIN(S_IWUSR | S_IRUGO,
|
|
|
|
ade7758_read_16bit,
|
|
|
|
ade7758_write_16bit,
|
|
|
|
ADE7758_CIGAIN);
|
|
|
|
static IIO_DEV_ATTR_AVRMSGAIN(S_IWUSR | S_IRUGO,
|
|
|
|
ade7758_read_16bit,
|
|
|
|
ade7758_write_16bit,
|
|
|
|
ADE7758_AVRMSGAIN);
|
|
|
|
static IIO_DEV_ATTR_BVRMSGAIN(S_IWUSR | S_IRUGO,
|
|
|
|
ade7758_read_16bit,
|
|
|
|
ade7758_write_16bit,
|
|
|
|
ADE7758_BVRMSGAIN);
|
|
|
|
static IIO_DEV_ATTR_CVRMSGAIN(S_IWUSR | S_IRUGO,
|
|
|
|
ade7758_read_16bit,
|
|
|
|
ade7758_write_16bit,
|
|
|
|
ADE7758_CVRMSGAIN);
|
|
|
|
|
|
|
|
int ade7758_set_irq(struct device *dev, bool enable)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
u32 irqen;
|
|
|
|
ret = ade7758_spi_read_reg_24(dev, ADE7758_MASK, &irqen);
|
|
|
|
if (ret)
|
|
|
|
goto error_ret;
|
|
|
|
|
|
|
|
if (enable)
|
|
|
|
irqen |= 1 << 16; /* Enables an interrupt when a data is
|
|
|
|
present in the waveform register */
|
|
|
|
else
|
|
|
|
irqen &= ~(1 << 16);
|
|
|
|
|
|
|
|
ret = ade7758_spi_write_reg_24(dev, ADE7758_MASK, irqen);
|
|
|
|
if (ret)
|
|
|
|
goto error_ret;
|
|
|
|
|
|
|
|
error_ret:
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Power down the device */
|
|
|
|
static int ade7758_stop_device(struct device *dev)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
u8 val;
|
|
|
|
ade7758_spi_read_reg_8(dev,
|
|
|
|
ADE7758_OPMODE,
|
|
|
|
&val);
|
|
|
|
val |= 7 << 3; /* ADE7758 powered down */
|
|
|
|
ret = ade7758_spi_write_reg_8(dev,
|
|
|
|
ADE7758_OPMODE,
|
|
|
|
val);
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int ade7758_initial_setup(struct ade7758_state *st)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
struct device *dev = &st->indio_dev->dev;
|
|
|
|
|
|
|
|
/* use low spi speed for init */
|
|
|
|
st->us->mode = SPI_MODE_3;
|
|
|
|
spi_setup(st->us);
|
|
|
|
|
|
|
|
/* Disable IRQ */
|
|
|
|
ret = ade7758_set_irq(dev, false);
|
|
|
|
if (ret) {
|
|
|
|
dev_err(dev, "disable irq failed");
|
|
|
|
goto err_ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
ade7758_reset(dev);
|
|
|
|
msleep(ADE7758_STARTUP_DELAY);
|
|
|
|
|
|
|
|
err_ret:
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t ade7758_read_frequency(struct device *dev,
|
|
|
|
struct device_attribute *attr,
|
|
|
|
char *buf)
|
|
|
|
{
|
|
|
|
int ret, len = 0;
|
|
|
|
u8 t;
|
|
|
|
int sps;
|
|
|
|
ret = ade7758_spi_read_reg_8(dev,
|
|
|
|
ADE7758_WAVMODE,
|
|
|
|
&t);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
t = (t >> 5) & 0x3;
|
|
|
|
sps = 26040 / (1 << t);
|
|
|
|
|
|
|
|
len = sprintf(buf, "%d SPS\n", sps);
|
|
|
|
return len;
|
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t ade7758_write_frequency(struct device *dev,
|
|
|
|
struct device_attribute *attr,
|
|
|
|
const char *buf,
|
|
|
|
size_t len)
|
|
|
|
{
|
|
|
|
struct iio_dev *indio_dev = dev_get_drvdata(dev);
|
|
|
|
unsigned long val;
|
|
|
|
int ret;
|
|
|
|
u8 reg, t;
|
|
|
|
|
|
|
|
ret = strict_strtol(buf, 10, &val);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
mutex_lock(&indio_dev->mlock);
|
|
|
|
|
2011-05-18 07:42:06 -06:00
|
|
|
switch (val) {
|
|
|
|
case 26040:
|
|
|
|
t = 0;
|
|
|
|
break;
|
|
|
|
case 13020:
|
|
|
|
t = 1;
|
|
|
|
break;
|
|
|
|
case 6510:
|
|
|
|
t = 2;
|
|
|
|
break;
|
|
|
|
case 3255:
|
|
|
|
t = 3;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
ret = -EINVAL;
|
|
|
|
goto out;
|
|
|
|
}
|
2010-10-27 19:44:16 -06:00
|
|
|
|
|
|
|
ret = ade7758_spi_read_reg_8(dev,
|
|
|
|
ADE7758_WAVMODE,
|
|
|
|
®);
|
|
|
|
if (ret)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
reg &= ~(5 << 3);
|
|
|
|
reg |= t << 5;
|
|
|
|
|
|
|
|
ret = ade7758_spi_write_reg_8(dev,
|
|
|
|
ADE7758_WAVMODE,
|
|
|
|
reg);
|
|
|
|
|
|
|
|
out:
|
|
|
|
mutex_unlock(&indio_dev->mlock);
|
|
|
|
|
|
|
|
return ret ? ret : len;
|
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t ade7758_read_waveform_type(struct device *dev,
|
|
|
|
struct device_attribute *attr,
|
|
|
|
char *buf)
|
|
|
|
{
|
|
|
|
int ret, len = 0;
|
|
|
|
u8 t;
|
|
|
|
ret = ade7758_spi_read_reg_8(dev,
|
|
|
|
ADE7758_WAVMODE,
|
|
|
|
&t);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
t = (t >> 2) & 0x7;
|
|
|
|
|
|
|
|
len = sprintf(buf, "%d\n", t);
|
|
|
|
|
|
|
|
return len;
|
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t ade7758_write_waveform_type(struct device *dev,
|
|
|
|
struct device_attribute *attr,
|
|
|
|
const char *buf,
|
|
|
|
size_t len)
|
|
|
|
{
|
|
|
|
struct iio_dev *indio_dev = dev_get_drvdata(dev);
|
|
|
|
unsigned long val;
|
|
|
|
int ret;
|
|
|
|
u8 reg;
|
|
|
|
|
|
|
|
ret = strict_strtol(buf, 10, &val);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
if (val > 4)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
mutex_lock(&indio_dev->mlock);
|
|
|
|
|
|
|
|
ret = ade7758_spi_read_reg_8(dev,
|
|
|
|
ADE7758_WAVMODE,
|
|
|
|
®);
|
|
|
|
if (ret)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
reg &= ~(7 << 2);
|
|
|
|
reg |= val << 2;
|
|
|
|
|
|
|
|
ret = ade7758_spi_write_reg_8(dev,
|
|
|
|
ADE7758_WAVMODE,
|
|
|
|
reg);
|
|
|
|
|
|
|
|
out:
|
|
|
|
mutex_unlock(&indio_dev->mlock);
|
|
|
|
|
|
|
|
return ret ? ret : len;
|
|
|
|
}
|
|
|
|
|
|
|
|
static IIO_DEV_ATTR_TEMP_RAW(ade7758_read_8bit);
|
|
|
|
static IIO_CONST_ATTR(temp_offset, "129 C");
|
|
|
|
static IIO_CONST_ATTR(temp_scale, "4 C");
|
|
|
|
|
|
|
|
static IIO_DEV_ATTR_AWATTHR(ade7758_read_16bit,
|
|
|
|
ADE7758_AWATTHR);
|
|
|
|
static IIO_DEV_ATTR_BWATTHR(ade7758_read_16bit,
|
|
|
|
ADE7758_BWATTHR);
|
|
|
|
static IIO_DEV_ATTR_CWATTHR(ade7758_read_16bit,
|
|
|
|
ADE7758_CWATTHR);
|
|
|
|
static IIO_DEV_ATTR_AVARHR(ade7758_read_16bit,
|
|
|
|
ADE7758_AVARHR);
|
|
|
|
static IIO_DEV_ATTR_BVARHR(ade7758_read_16bit,
|
|
|
|
ADE7758_BVARHR);
|
|
|
|
static IIO_DEV_ATTR_CVARHR(ade7758_read_16bit,
|
|
|
|
ADE7758_CVARHR);
|
|
|
|
static IIO_DEV_ATTR_AVAHR(ade7758_read_16bit,
|
|
|
|
ADE7758_AVAHR);
|
|
|
|
static IIO_DEV_ATTR_BVAHR(ade7758_read_16bit,
|
|
|
|
ADE7758_BVAHR);
|
|
|
|
static IIO_DEV_ATTR_CVAHR(ade7758_read_16bit,
|
|
|
|
ADE7758_CVAHR);
|
|
|
|
|
|
|
|
static IIO_DEV_ATTR_SAMP_FREQ(S_IWUSR | S_IRUGO,
|
|
|
|
ade7758_read_frequency,
|
|
|
|
ade7758_write_frequency);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* IIO_DEV_ATTR_WAVEFORM_TYPE - set the type of waveform.
|
|
|
|
* @_mode: sysfs file mode/permissions
|
|
|
|
* @_show: output method for the attribute
|
|
|
|
* @_store: input method for the attribute
|
|
|
|
**/
|
|
|
|
#define IIO_DEV_ATTR_WAVEFORM_TYPE(_mode, _show, _store) \
|
|
|
|
IIO_DEVICE_ATTR(waveform_type, _mode, _show, _store, 0)
|
|
|
|
|
|
|
|
static IIO_DEV_ATTR_WAVEFORM_TYPE(S_IWUSR | S_IRUGO,
|
|
|
|
ade7758_read_waveform_type,
|
|
|
|
ade7758_write_waveform_type);
|
|
|
|
|
|
|
|
static IIO_DEV_ATTR_RESET(ade7758_write_reset);
|
|
|
|
|
2011-05-18 07:42:06 -06:00
|
|
|
static IIO_CONST_ATTR_SAMP_FREQ_AVAIL("26040 13020 6510 3255");
|
2010-10-27 19:44:16 -06:00
|
|
|
|
|
|
|
static struct attribute *ade7758_attributes[] = {
|
|
|
|
&iio_dev_attr_temp_raw.dev_attr.attr,
|
|
|
|
&iio_const_attr_temp_offset.dev_attr.attr,
|
|
|
|
&iio_const_attr_temp_scale.dev_attr.attr,
|
|
|
|
&iio_dev_attr_sampling_frequency.dev_attr.attr,
|
|
|
|
&iio_dev_attr_waveform_type.dev_attr.attr,
|
|
|
|
&iio_const_attr_sampling_frequency_available.dev_attr.attr,
|
|
|
|
&iio_dev_attr_reset.dev_attr.attr,
|
|
|
|
&iio_dev_attr_awatthr.dev_attr.attr,
|
|
|
|
&iio_dev_attr_bwatthr.dev_attr.attr,
|
|
|
|
&iio_dev_attr_cwatthr.dev_attr.attr,
|
|
|
|
&iio_dev_attr_avarhr.dev_attr.attr,
|
|
|
|
&iio_dev_attr_bvarhr.dev_attr.attr,
|
|
|
|
&iio_dev_attr_cvarhr.dev_attr.attr,
|
|
|
|
&iio_dev_attr_avahr.dev_attr.attr,
|
|
|
|
&iio_dev_attr_bvahr.dev_attr.attr,
|
|
|
|
&iio_dev_attr_cvahr.dev_attr.attr,
|
|
|
|
&iio_dev_attr_vpeak.dev_attr.attr,
|
|
|
|
&iio_dev_attr_ipeak.dev_attr.attr,
|
|
|
|
&iio_dev_attr_aphcal.dev_attr.attr,
|
|
|
|
&iio_dev_attr_bphcal.dev_attr.attr,
|
|
|
|
&iio_dev_attr_cphcal.dev_attr.attr,
|
|
|
|
&iio_dev_attr_wdiv.dev_attr.attr,
|
|
|
|
&iio_dev_attr_vadiv.dev_attr.attr,
|
|
|
|
&iio_dev_attr_airms.dev_attr.attr,
|
|
|
|
&iio_dev_attr_birms.dev_attr.attr,
|
|
|
|
&iio_dev_attr_cirms.dev_attr.attr,
|
|
|
|
&iio_dev_attr_avrms.dev_attr.attr,
|
|
|
|
&iio_dev_attr_bvrms.dev_attr.attr,
|
|
|
|
&iio_dev_attr_cvrms.dev_attr.attr,
|
|
|
|
&iio_dev_attr_aigain.dev_attr.attr,
|
|
|
|
&iio_dev_attr_bigain.dev_attr.attr,
|
|
|
|
&iio_dev_attr_cigain.dev_attr.attr,
|
|
|
|
&iio_dev_attr_avrmsgain.dev_attr.attr,
|
|
|
|
&iio_dev_attr_bvrmsgain.dev_attr.attr,
|
|
|
|
&iio_dev_attr_cvrmsgain.dev_attr.attr,
|
|
|
|
&iio_dev_attr_airmsos.dev_attr.attr,
|
|
|
|
&iio_dev_attr_birmsos.dev_attr.attr,
|
|
|
|
&iio_dev_attr_cirmsos.dev_attr.attr,
|
|
|
|
&iio_dev_attr_avrmsos.dev_attr.attr,
|
|
|
|
&iio_dev_attr_bvrmsos.dev_attr.attr,
|
|
|
|
&iio_dev_attr_cvrmsos.dev_attr.attr,
|
|
|
|
NULL,
|
|
|
|
};
|
|
|
|
|
|
|
|
static const struct attribute_group ade7758_attribute_group = {
|
|
|
|
.attrs = ade7758_attributes,
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
static int __devinit ade7758_probe(struct spi_device *spi)
|
|
|
|
{
|
|
|
|
int ret, regdone = 0;
|
|
|
|
struct ade7758_state *st = kzalloc(sizeof *st, GFP_KERNEL);
|
|
|
|
if (!st) {
|
|
|
|
ret = -ENOMEM;
|
|
|
|
goto error_ret;
|
|
|
|
}
|
|
|
|
/* this is only used for removal purposes */
|
|
|
|
spi_set_drvdata(spi, st);
|
|
|
|
|
|
|
|
/* Allocate the comms buffers */
|
|
|
|
st->rx = kzalloc(sizeof(*st->rx)*ADE7758_MAX_RX, GFP_KERNEL);
|
|
|
|
if (st->rx == NULL) {
|
|
|
|
ret = -ENOMEM;
|
|
|
|
goto error_free_st;
|
|
|
|
}
|
|
|
|
st->tx = kzalloc(sizeof(*st->tx)*ADE7758_MAX_TX, GFP_KERNEL);
|
|
|
|
if (st->tx == NULL) {
|
|
|
|
ret = -ENOMEM;
|
|
|
|
goto error_free_rx;
|
|
|
|
}
|
|
|
|
st->us = spi;
|
|
|
|
mutex_init(&st->buf_lock);
|
|
|
|
/* setup the industrialio driver allocated elements */
|
2011-04-15 11:55:56 -06:00
|
|
|
st->indio_dev = iio_allocate_device(0);
|
2010-10-27 19:44:16 -06:00
|
|
|
if (st->indio_dev == NULL) {
|
|
|
|
ret = -ENOMEM;
|
|
|
|
goto error_free_tx;
|
|
|
|
}
|
|
|
|
|
2011-05-18 07:41:44 -06:00
|
|
|
st->indio_dev->name = spi->dev.driver->name;
|
2010-10-27 19:44:16 -06:00
|
|
|
st->indio_dev->dev.parent = &spi->dev;
|
|
|
|
st->indio_dev->attrs = &ade7758_attribute_group;
|
|
|
|
st->indio_dev->dev_data = (void *)(st);
|
|
|
|
st->indio_dev->driver_module = THIS_MODULE;
|
|
|
|
st->indio_dev->modes = INDIO_DIRECT_MODE;
|
|
|
|
|
|
|
|
ret = ade7758_configure_ring(st->indio_dev);
|
|
|
|
if (ret)
|
|
|
|
goto error_free_dev;
|
|
|
|
|
|
|
|
ret = iio_device_register(st->indio_dev);
|
|
|
|
if (ret)
|
|
|
|
goto error_unreg_ring_funcs;
|
|
|
|
regdone = 1;
|
|
|
|
|
|
|
|
ret = ade7758_initialize_ring(st->indio_dev->ring);
|
|
|
|
if (ret) {
|
|
|
|
printk(KERN_ERR "failed to initialize the ring\n");
|
|
|
|
goto error_unreg_ring_funcs;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (spi->irq) {
|
|
|
|
ret = ade7758_probe_trigger(st->indio_dev);
|
|
|
|
if (ret)
|
2011-04-18 05:59:06 -06:00
|
|
|
goto error_uninitialize_ring;
|
2010-10-27 19:44:16 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Get the device into a sane initial state */
|
|
|
|
ret = ade7758_initial_setup(st);
|
|
|
|
if (ret)
|
|
|
|
goto error_remove_trigger;
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
error_remove_trigger:
|
|
|
|
if (st->indio_dev->modes & INDIO_RING_TRIGGERED)
|
|
|
|
ade7758_remove_trigger(st->indio_dev);
|
|
|
|
error_uninitialize_ring:
|
|
|
|
ade7758_uninitialize_ring(st->indio_dev->ring);
|
|
|
|
error_unreg_ring_funcs:
|
|
|
|
ade7758_unconfigure_ring(st->indio_dev);
|
|
|
|
error_free_dev:
|
|
|
|
if (regdone)
|
|
|
|
iio_device_unregister(st->indio_dev);
|
|
|
|
else
|
|
|
|
iio_free_device(st->indio_dev);
|
|
|
|
error_free_tx:
|
|
|
|
kfree(st->tx);
|
|
|
|
error_free_rx:
|
|
|
|
kfree(st->rx);
|
|
|
|
error_free_st:
|
|
|
|
kfree(st);
|
|
|
|
error_ret:
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int ade7758_remove(struct spi_device *spi)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
struct ade7758_state *st = spi_get_drvdata(spi);
|
|
|
|
struct iio_dev *indio_dev = st->indio_dev;
|
|
|
|
|
|
|
|
ret = ade7758_stop_device(&(indio_dev->dev));
|
|
|
|
if (ret)
|
|
|
|
goto err_ret;
|
|
|
|
|
|
|
|
flush_scheduled_work();
|
|
|
|
|
|
|
|
ade7758_remove_trigger(indio_dev);
|
|
|
|
ade7758_uninitialize_ring(indio_dev->ring);
|
|
|
|
iio_device_unregister(indio_dev);
|
|
|
|
ade7758_unconfigure_ring(indio_dev);
|
|
|
|
kfree(st->tx);
|
|
|
|
kfree(st->rx);
|
|
|
|
kfree(st);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
err_ret:
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct spi_driver ade7758_driver = {
|
|
|
|
.driver = {
|
|
|
|
.name = "ade7758",
|
|
|
|
.owner = THIS_MODULE,
|
|
|
|
},
|
|
|
|
.probe = ade7758_probe,
|
|
|
|
.remove = __devexit_p(ade7758_remove),
|
|
|
|
};
|
|
|
|
|
|
|
|
static __init int ade7758_init(void)
|
|
|
|
{
|
|
|
|
return spi_register_driver(&ade7758_driver);
|
|
|
|
}
|
|
|
|
module_init(ade7758_init);
|
|
|
|
|
|
|
|
static __exit void ade7758_exit(void)
|
|
|
|
{
|
|
|
|
spi_unregister_driver(&ade7758_driver);
|
|
|
|
}
|
|
|
|
module_exit(ade7758_exit);
|
|
|
|
|
|
|
|
MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
|
|
|
|
MODULE_DESCRIPTION("Analog Devices ADE7758 Polyphase Multifunction Energy Metering IC Driver");
|
|
|
|
MODULE_LICENSE("GPL v2");
|