933 lines
20 KiB
C
Executable File
933 lines
20 KiB
C
Executable File
/*
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* ADE7758 Poly Phase Multifunction Energy Metering IC driver
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*
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* Copyright 2010-2011 Analog Devices Inc.
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*
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* Licensed under the GPL-2.
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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/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 <linux/module.h>
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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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#include "meter.h"
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#include "ade7758.h"
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int ade7758_spi_write_reg_8(struct device *dev, u8 reg_address, u8 val)
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{
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int ret;
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struct iio_dev *indio_dev = dev_to_iio_dev(dev);
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struct ade7758_state *st = iio_priv(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, u8 reg_address,
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u16 value)
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{
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int ret;
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struct iio_dev *indio_dev = dev_to_iio_dev(dev);
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struct ade7758_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 = 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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ret = spi_sync_transfer(st->us, xfers, ARRAY_SIZE(xfers));
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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, u8 reg_address,
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u32 value)
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{
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int ret;
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struct iio_dev *indio_dev = dev_to_iio_dev(dev);
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struct ade7758_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 = 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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ret = spi_sync_transfer(st->us, xfers, ARRAY_SIZE(xfers));
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mutex_unlock(&st->buf_lock);
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return ret;
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}
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int ade7758_spi_read_reg_8(struct device *dev, u8 reg_address, u8 *val)
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{
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struct iio_dev *indio_dev = dev_to_iio_dev(dev);
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struct ade7758_state *st = iio_priv(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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.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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.rx_buf = st->rx,
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.bits_per_word = 8,
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.len = 1,
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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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ret = spi_sync_transfer(st->us, xfers, ARRAY_SIZE(xfers));
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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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*val = st->rx[0];
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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, u8 reg_address,
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u16 *val)
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{
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struct iio_dev *indio_dev = dev_to_iio_dev(dev);
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struct ade7758_state *st = iio_priv(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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.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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.rx_buf = st->rx,
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.bits_per_word = 8,
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.len = 2,
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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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ret = spi_sync_transfer(st->us, xfers, ARRAY_SIZE(xfers));
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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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*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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static int ade7758_spi_read_reg_24(struct device *dev, u8 reg_address,
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u32 *val)
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{
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struct iio_dev *indio_dev = dev_to_iio_dev(dev);
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struct ade7758_state *st = iio_priv(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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.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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.rx_buf = st->rx,
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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_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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ret = spi_sync_transfer(st->us, xfers, ARRAY_SIZE(xfers));
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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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*val = (st->rx[0] << 16) | (st->rx[1] << 8) | st->rx[2];
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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, 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, 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, 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, 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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u8 val;
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ret = kstrtou8(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, 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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u16 val;
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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 = 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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static int ade7758_reset(struct device *dev)
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{
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int ret;
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u8 val;
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ret = ade7758_spi_read_reg_8(dev, ADE7758_OPMODE, &val);
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if (ret < 0) {
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dev_err(dev, "Failed to read opmode reg\n");
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return ret;
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}
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val |= BIT(6); /* Software Chip Reset */
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ret = ade7758_spi_write_reg_8(dev, ADE7758_OPMODE, val);
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if (ret < 0)
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dev_err(dev, "Failed to write opmode reg\n");
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return ret;
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}
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static IIO_DEV_ATTR_VPEAK(0644,
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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(0644,
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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_APHCAL(0644,
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ade7758_read_8bit,
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ade7758_write_8bit,
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ADE7758_APHCAL);
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static IIO_DEV_ATTR_BPHCAL(0644,
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ade7758_read_8bit,
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ade7758_write_8bit,
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ADE7758_BPHCAL);
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static IIO_DEV_ATTR_CPHCAL(0644,
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ade7758_read_8bit,
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ade7758_write_8bit,
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ADE7758_CPHCAL);
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static IIO_DEV_ATTR_WDIV(0644,
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ade7758_read_8bit,
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ade7758_write_8bit,
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ADE7758_WDIV);
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static IIO_DEV_ATTR_VADIV(0644,
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ade7758_read_8bit,
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ade7758_write_8bit,
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ADE7758_VADIV);
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static IIO_DEV_ATTR_AIRMS(0444,
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ade7758_read_24bit,
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NULL,
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ADE7758_AIRMS);
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static IIO_DEV_ATTR_BIRMS(0444,
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ade7758_read_24bit,
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NULL,
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ADE7758_BIRMS);
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static IIO_DEV_ATTR_CIRMS(0444,
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ade7758_read_24bit,
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NULL,
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ADE7758_CIRMS);
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static IIO_DEV_ATTR_AVRMS(0444,
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ade7758_read_24bit,
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NULL,
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ADE7758_AVRMS);
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static IIO_DEV_ATTR_BVRMS(0444,
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ade7758_read_24bit,
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NULL,
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ADE7758_BVRMS);
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static IIO_DEV_ATTR_CVRMS(0444,
|
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ade7758_read_24bit,
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NULL,
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ADE7758_CVRMS);
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static IIO_DEV_ATTR_AIRMSOS(0644,
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ade7758_read_16bit,
|
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ade7758_write_16bit,
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ADE7758_AIRMSOS);
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static IIO_DEV_ATTR_BIRMSOS(0644,
|
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ade7758_read_16bit,
|
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ade7758_write_16bit,
|
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ADE7758_BIRMSOS);
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static IIO_DEV_ATTR_CIRMSOS(0644,
|
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ade7758_read_16bit,
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ade7758_write_16bit,
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ADE7758_CIRMSOS);
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static IIO_DEV_ATTR_AVRMSOS(0644,
|
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ade7758_read_16bit,
|
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ade7758_write_16bit,
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ADE7758_AVRMSOS);
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static IIO_DEV_ATTR_BVRMSOS(0644,
|
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ade7758_read_16bit,
|
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ade7758_write_16bit,
|
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ADE7758_BVRMSOS);
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static IIO_DEV_ATTR_CVRMSOS(0644,
|
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ade7758_read_16bit,
|
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ade7758_write_16bit,
|
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ADE7758_CVRMSOS);
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static IIO_DEV_ATTR_AIGAIN(0644,
|
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ade7758_read_16bit,
|
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ade7758_write_16bit,
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ADE7758_AIGAIN);
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static IIO_DEV_ATTR_BIGAIN(0644,
|
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ade7758_read_16bit,
|
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ade7758_write_16bit,
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ADE7758_BIGAIN);
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static IIO_DEV_ATTR_CIGAIN(0644,
|
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ade7758_read_16bit,
|
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ade7758_write_16bit,
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ADE7758_CIGAIN);
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static IIO_DEV_ATTR_AVRMSGAIN(0644,
|
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ade7758_read_16bit,
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ade7758_write_16bit,
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ADE7758_AVRMSGAIN);
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static IIO_DEV_ATTR_BVRMSGAIN(0644,
|
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ade7758_read_16bit,
|
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ade7758_write_16bit,
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ADE7758_BVRMSGAIN);
|
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static IIO_DEV_ATTR_CVRMSGAIN(0644,
|
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ade7758_read_16bit,
|
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ade7758_write_16bit,
|
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ADE7758_CVRMSGAIN);
|
|
|
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int ade7758_set_irq(struct device *dev, bool enable)
|
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{
|
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int ret;
|
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u32 irqen;
|
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|
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ret = ade7758_spi_read_reg_24(dev, ADE7758_MASK, &irqen);
|
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if (ret)
|
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return ret;
|
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|
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if (enable)
|
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irqen |= BIT(16); /* Enables an interrupt when a data is
|
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* present in the waveform register
|
|
*/
|
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else
|
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irqen &= ~BIT(16);
|
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|
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ret = ade7758_spi_write_reg_24(dev, ADE7758_MASK, irqen);
|
|
|
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return ret;
|
|
}
|
|
|
|
/* Power down the device */
|
|
static int ade7758_stop_device(struct device *dev)
|
|
{
|
|
int ret;
|
|
u8 val;
|
|
|
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ret = ade7758_spi_read_reg_8(dev, ADE7758_OPMODE, &val);
|
|
if (ret < 0) {
|
|
dev_err(dev, "Failed to read opmode reg\n");
|
|
return ret;
|
|
}
|
|
val |= 7 << 3; /* ADE7758 powered down */
|
|
ret = ade7758_spi_write_reg_8(dev, ADE7758_OPMODE, val);
|
|
if (ret < 0)
|
|
dev_err(dev, "Failed to write opmode reg\n");
|
|
return ret;
|
|
}
|
|
|
|
static int ade7758_initial_setup(struct iio_dev *indio_dev)
|
|
{
|
|
struct ade7758_state *st = iio_priv(indio_dev);
|
|
struct device *dev = &indio_dev->dev;
|
|
int ret;
|
|
|
|
/* use low spi speed for init */
|
|
st->us->mode = SPI_MODE_1;
|
|
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);
|
|
usleep_range(ADE7758_STARTUP_DELAY, ADE7758_STARTUP_DELAY + 100);
|
|
|
|
err_ret:
|
|
return ret;
|
|
}
|
|
|
|
static int ade7758_read_samp_freq(struct device *dev, int *val)
|
|
{
|
|
int ret;
|
|
u8 t;
|
|
|
|
ret = ade7758_spi_read_reg_8(dev, ADE7758_WAVMODE, &t);
|
|
if (ret)
|
|
return ret;
|
|
|
|
t = (t >> 5) & 0x3;
|
|
*val = 26040 / (1 << t);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ade7758_write_samp_freq(struct device *dev, int val)
|
|
{
|
|
int ret;
|
|
u8 reg, t;
|
|
|
|
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;
|
|
}
|
|
|
|
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:
|
|
return ret;
|
|
}
|
|
|
|
static int ade7758_read_raw(struct iio_dev *indio_dev,
|
|
struct iio_chan_spec const *chan,
|
|
int *val,
|
|
int *val2,
|
|
long mask)
|
|
{
|
|
int ret;
|
|
|
|
switch (mask) {
|
|
case IIO_CHAN_INFO_SAMP_FREQ:
|
|
mutex_lock(&indio_dev->mlock);
|
|
ret = ade7758_read_samp_freq(&indio_dev->dev, val);
|
|
mutex_unlock(&indio_dev->mlock);
|
|
return ret;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int ade7758_write_raw(struct iio_dev *indio_dev,
|
|
struct iio_chan_spec const *chan,
|
|
int val, int val2, long mask)
|
|
{
|
|
int ret;
|
|
|
|
switch (mask) {
|
|
case IIO_CHAN_INFO_SAMP_FREQ:
|
|
if (val2)
|
|
return -EINVAL;
|
|
mutex_lock(&indio_dev->mlock);
|
|
ret = ade7758_write_samp_freq(&indio_dev->dev, val);
|
|
mutex_unlock(&indio_dev->mlock);
|
|
return ret;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static IIO_DEV_ATTR_TEMP_RAW(ade7758_read_8bit);
|
|
static IIO_CONST_ATTR(in_temp_offset, "129 C");
|
|
static IIO_CONST_ATTR(in_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_CONST_ATTR_SAMP_FREQ_AVAIL("26040 13020 6510 3255");
|
|
|
|
static struct attribute *ade7758_attributes[] = {
|
|
&iio_dev_attr_in_temp_raw.dev_attr.attr,
|
|
&iio_const_attr_in_temp_offset.dev_attr.attr,
|
|
&iio_const_attr_in_temp_scale.dev_attr.attr,
|
|
&iio_const_attr_sampling_frequency_available.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 const struct iio_chan_spec ade7758_channels[] = {
|
|
{
|
|
.type = IIO_VOLTAGE,
|
|
.indexed = 1,
|
|
.channel = 0,
|
|
.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
|
|
.address = AD7758_WT(AD7758_PHASE_A, AD7758_VOLTAGE),
|
|
.scan_index = 0,
|
|
.scan_type = {
|
|
.sign = 's',
|
|
.realbits = 24,
|
|
.storagebits = 32,
|
|
},
|
|
}, {
|
|
.type = IIO_CURRENT,
|
|
.indexed = 1,
|
|
.channel = 0,
|
|
.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
|
|
.address = AD7758_WT(AD7758_PHASE_A, AD7758_CURRENT),
|
|
.scan_index = 1,
|
|
.scan_type = {
|
|
.sign = 's',
|
|
.realbits = 24,
|
|
.storagebits = 32,
|
|
},
|
|
}, {
|
|
.type = IIO_POWER,
|
|
.indexed = 1,
|
|
.channel = 0,
|
|
.extend_name = "apparent",
|
|
.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
|
|
.address = AD7758_WT(AD7758_PHASE_A, AD7758_APP_PWR),
|
|
.scan_index = 2,
|
|
.scan_type = {
|
|
.sign = 's',
|
|
.realbits = 24,
|
|
.storagebits = 32,
|
|
},
|
|
}, {
|
|
.type = IIO_POWER,
|
|
.indexed = 1,
|
|
.channel = 0,
|
|
.extend_name = "active",
|
|
.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
|
|
.address = AD7758_WT(AD7758_PHASE_A, AD7758_ACT_PWR),
|
|
.scan_index = 3,
|
|
.scan_type = {
|
|
.sign = 's',
|
|
.realbits = 24,
|
|
.storagebits = 32,
|
|
},
|
|
}, {
|
|
.type = IIO_POWER,
|
|
.indexed = 1,
|
|
.channel = 0,
|
|
.extend_name = "reactive",
|
|
.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
|
|
.address = AD7758_WT(AD7758_PHASE_A, AD7758_REACT_PWR),
|
|
.scan_index = 4,
|
|
.scan_type = {
|
|
.sign = 's',
|
|
.realbits = 24,
|
|
.storagebits = 32,
|
|
},
|
|
}, {
|
|
.type = IIO_VOLTAGE,
|
|
.indexed = 1,
|
|
.channel = 1,
|
|
.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
|
|
.address = AD7758_WT(AD7758_PHASE_B, AD7758_VOLTAGE),
|
|
.scan_index = 5,
|
|
.scan_type = {
|
|
.sign = 's',
|
|
.realbits = 24,
|
|
.storagebits = 32,
|
|
},
|
|
}, {
|
|
.type = IIO_CURRENT,
|
|
.indexed = 1,
|
|
.channel = 1,
|
|
.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
|
|
.address = AD7758_WT(AD7758_PHASE_B, AD7758_CURRENT),
|
|
.scan_index = 6,
|
|
.scan_type = {
|
|
.sign = 's',
|
|
.realbits = 24,
|
|
.storagebits = 32,
|
|
},
|
|
}, {
|
|
.type = IIO_POWER,
|
|
.indexed = 1,
|
|
.channel = 1,
|
|
.extend_name = "apparent",
|
|
.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
|
|
.address = AD7758_WT(AD7758_PHASE_B, AD7758_APP_PWR),
|
|
.scan_index = 7,
|
|
.scan_type = {
|
|
.sign = 's',
|
|
.realbits = 24,
|
|
.storagebits = 32,
|
|
},
|
|
}, {
|
|
.type = IIO_POWER,
|
|
.indexed = 1,
|
|
.channel = 1,
|
|
.extend_name = "active",
|
|
.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
|
|
.address = AD7758_WT(AD7758_PHASE_B, AD7758_ACT_PWR),
|
|
.scan_index = 8,
|
|
.scan_type = {
|
|
.sign = 's',
|
|
.realbits = 24,
|
|
.storagebits = 32,
|
|
},
|
|
}, {
|
|
.type = IIO_POWER,
|
|
.indexed = 1,
|
|
.channel = 1,
|
|
.extend_name = "reactive",
|
|
.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
|
|
.address = AD7758_WT(AD7758_PHASE_B, AD7758_REACT_PWR),
|
|
.scan_index = 9,
|
|
.scan_type = {
|
|
.sign = 's',
|
|
.realbits = 24,
|
|
.storagebits = 32,
|
|
},
|
|
}, {
|
|
.type = IIO_VOLTAGE,
|
|
.indexed = 1,
|
|
.channel = 2,
|
|
.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
|
|
.address = AD7758_WT(AD7758_PHASE_C, AD7758_VOLTAGE),
|
|
.scan_index = 10,
|
|
.scan_type = {
|
|
.sign = 's',
|
|
.realbits = 24,
|
|
.storagebits = 32,
|
|
},
|
|
}, {
|
|
.type = IIO_CURRENT,
|
|
.indexed = 1,
|
|
.channel = 2,
|
|
.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
|
|
.address = AD7758_WT(AD7758_PHASE_C, AD7758_CURRENT),
|
|
.scan_index = 11,
|
|
.scan_type = {
|
|
.sign = 's',
|
|
.realbits = 24,
|
|
.storagebits = 32,
|
|
},
|
|
}, {
|
|
.type = IIO_POWER,
|
|
.indexed = 1,
|
|
.channel = 2,
|
|
.extend_name = "apparent",
|
|
.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
|
|
.address = AD7758_WT(AD7758_PHASE_C, AD7758_APP_PWR),
|
|
.scan_index = 12,
|
|
.scan_type = {
|
|
.sign = 's',
|
|
.realbits = 24,
|
|
.storagebits = 32,
|
|
},
|
|
}, {
|
|
.type = IIO_POWER,
|
|
.indexed = 1,
|
|
.channel = 2,
|
|
.extend_name = "active",
|
|
.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
|
|
.address = AD7758_WT(AD7758_PHASE_C, AD7758_ACT_PWR),
|
|
.scan_index = 13,
|
|
.scan_type = {
|
|
.sign = 's',
|
|
.realbits = 24,
|
|
.storagebits = 32,
|
|
},
|
|
}, {
|
|
.type = IIO_POWER,
|
|
.indexed = 1,
|
|
.channel = 2,
|
|
.extend_name = "reactive",
|
|
.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
|
|
.address = AD7758_WT(AD7758_PHASE_C, AD7758_REACT_PWR),
|
|
.scan_index = 14,
|
|
.scan_type = {
|
|
.sign = 's',
|
|
.realbits = 24,
|
|
.storagebits = 32,
|
|
},
|
|
},
|
|
IIO_CHAN_SOFT_TIMESTAMP(15),
|
|
};
|
|
|
|
static const struct iio_info ade7758_info = {
|
|
.attrs = &ade7758_attribute_group,
|
|
.read_raw = &ade7758_read_raw,
|
|
.write_raw = &ade7758_write_raw,
|
|
.driver_module = THIS_MODULE,
|
|
};
|
|
|
|
static int ade7758_probe(struct spi_device *spi)
|
|
{
|
|
int ret;
|
|
struct ade7758_state *st;
|
|
struct iio_dev *indio_dev;
|
|
|
|
indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
|
|
if (!indio_dev)
|
|
return -ENOMEM;
|
|
|
|
st = iio_priv(indio_dev);
|
|
/* this is only used for removal purposes */
|
|
spi_set_drvdata(spi, indio_dev);
|
|
|
|
/* Allocate the comms buffers */
|
|
st->rx = kcalloc(ADE7758_MAX_RX, sizeof(*st->rx), GFP_KERNEL);
|
|
if (!st->rx)
|
|
return -ENOMEM;
|
|
st->tx = kcalloc(ADE7758_MAX_TX, sizeof(*st->tx), GFP_KERNEL);
|
|
if (!st->tx) {
|
|
ret = -ENOMEM;
|
|
goto error_free_rx;
|
|
}
|
|
st->us = spi;
|
|
mutex_init(&st->buf_lock);
|
|
|
|
indio_dev->name = spi->dev.driver->name;
|
|
indio_dev->dev.parent = &spi->dev;
|
|
indio_dev->info = &ade7758_info;
|
|
indio_dev->modes = INDIO_DIRECT_MODE;
|
|
indio_dev->channels = ade7758_channels;
|
|
indio_dev->num_channels = ARRAY_SIZE(ade7758_channels);
|
|
|
|
ret = ade7758_configure_ring(indio_dev);
|
|
if (ret)
|
|
goto error_free_tx;
|
|
|
|
/* Get the device into a sane initial state */
|
|
ret = ade7758_initial_setup(indio_dev);
|
|
if (ret)
|
|
goto error_unreg_ring_funcs;
|
|
|
|
if (spi->irq) {
|
|
ret = ade7758_probe_trigger(indio_dev);
|
|
if (ret)
|
|
goto error_unreg_ring_funcs;
|
|
}
|
|
|
|
ret = iio_device_register(indio_dev);
|
|
if (ret)
|
|
goto error_remove_trigger;
|
|
|
|
return 0;
|
|
|
|
error_remove_trigger:
|
|
if (spi->irq)
|
|
ade7758_remove_trigger(indio_dev);
|
|
error_unreg_ring_funcs:
|
|
ade7758_unconfigure_ring(indio_dev);
|
|
error_free_tx:
|
|
kfree(st->tx);
|
|
error_free_rx:
|
|
kfree(st->rx);
|
|
return ret;
|
|
}
|
|
|
|
static int ade7758_remove(struct spi_device *spi)
|
|
{
|
|
struct iio_dev *indio_dev = spi_get_drvdata(spi);
|
|
struct ade7758_state *st = iio_priv(indio_dev);
|
|
|
|
iio_device_unregister(indio_dev);
|
|
ade7758_stop_device(&indio_dev->dev);
|
|
ade7758_remove_trigger(indio_dev);
|
|
ade7758_unconfigure_ring(indio_dev);
|
|
kfree(st->tx);
|
|
kfree(st->rx);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct spi_device_id ade7758_id[] = {
|
|
{"ade7758", 0},
|
|
{}
|
|
};
|
|
MODULE_DEVICE_TABLE(spi, ade7758_id);
|
|
|
|
static struct spi_driver ade7758_driver = {
|
|
.driver = {
|
|
.name = "ade7758",
|
|
},
|
|
.probe = ade7758_probe,
|
|
.remove = ade7758_remove,
|
|
.id_table = ade7758_id,
|
|
};
|
|
module_spi_driver(ade7758_driver);
|
|
|
|
MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
|
|
MODULE_DESCRIPTION("Analog Devices ADE7758 Polyphase Multifunction Energy Metering IC Driver");
|
|
MODULE_LICENSE("GPL v2");
|