microsoft
/
WSL2-Linux-Kernel
зеркало из https://github.com/microsoft/WSL2-Linux-Kernel.git
1
0
Форкнуть 0
Код Задачи Пакеты Проекты Релизы Вики Активность

staging: iio: meter: new driver for ADE7759 devices 

Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Barry Song 2010-10-27 21:44:17 -04:00 коммит произвёл Greg Kroah-Hartman
Родитель 8210cfe9bd
Коммит 2919fa54ef
4 изменённых файлов: 801 добавлений и 0 удалений
Показать статистику Скачать Patch файл Скачать Diff файл Показать все файлы Свернуть все файлы

7
drivers/staging/iio/meter/Kconfig
Просмотреть файл

@ -25,3 +25,10 @@ config ADE7758
help
Say yes here to build support for Analog Devices ADE7758 Polyphase
Multifunction Energy Metering IC with Per Phase Information Driver.
config ADE7759
tristate "Analog Devices ADE7759 Active Energy Metering IC Driver"
depends on SPI
help
Say yes here to build support for Analog Devices ADE7758 Active Energy
Metering IC with di/dt Sensor Interface.

2
drivers/staging/iio/meter/Makefile
Просмотреть файл

@ -8,3 +8,5 @@ obj-$(CONFIG_ADE7754) += ade7754.o
ade7758-y := ade7758_core.o
ade7758-$(CONFIG_IIO_RING_BUFFER) += ade7758_ring.o ade7758_trigger.o
obj-$(CONFIG_ADE7758) += ade7758.o
obj-$(CONFIG_ADE7759) += ade7759.o

670
drivers/staging/iio/meter/ade7759.c Normal file
Просмотреть файл

@ -0,0 +1,670 @@
/*
* ADE7759 Active Energy Metering IC with di/dt Sensor Interface Driver
*
* Copyright 2010 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/gpio.h>
#include <linux/delay.h>
#include <linux/mutex.h>
#include <linux/device.h>
#include <linux/kernel.h>
#include <linux/spi/spi.h>
#include <linux/slab.h>
#include <linux/sysfs.h>
#include <linux/list.h>
#include "../iio.h"
#include "../sysfs.h"
#include "meter.h"
#include "ade7759.h"
int ade7759_spi_write_reg_8(struct device *dev,
u8 reg_address,
u8 val)
{
int ret;
struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct ade7759_state *st = iio_dev_get_devdata(indio_dev);
mutex_lock(&st->buf_lock);
st->tx[0] = ADE7759_WRITE_REG(reg_address);
st->tx[1] = val;
ret = spi_write(st->us, st->tx, 2);
mutex_unlock(&st->buf_lock);
return ret;
}
static int ade7759_spi_write_reg_16(struct device *dev,
u8 reg_address,
u16 value)
{
int ret;
struct spi_message msg;
struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct ade7759_state *st = iio_dev_get_devdata(indio_dev);
struct spi_transfer xfers[] = {
{
.tx_buf = st->tx,
.bits_per_word = 8,
.len = 3,
}
};
mutex_lock(&st->buf_lock);
st->tx[0] = ADE7759_WRITE_REG(reg_address);
st->tx[1] = (value >> 8) & 0xFF;
st->tx[2] = value & 0xFF;
spi_message_init(&msg);
spi_message_add_tail(xfers, &msg);
ret = spi_sync(st->us, &msg);
mutex_unlock(&st->buf_lock);
return ret;
}
static int ade7759_spi_read_reg_8(struct device *dev,
u8 reg_address,
u8 *val)
{
struct spi_message msg;
struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct ade7759_state *st = iio_dev_get_devdata(indio_dev);
int ret;
struct spi_transfer xfers[] = {
{
.tx_buf = st->tx,
.rx_buf = st->rx,
.bits_per_word = 8,
.len = 2,
},
};
mutex_lock(&st->buf_lock);
st->tx[0] = ADE7759_READ_REG(reg_address);
st->tx[1] = 0;
spi_message_init(&msg);
spi_message_add_tail(xfers, &msg);
ret = spi_sync(st->us, &msg);
if (ret) {
dev_err(&st->us->dev, "problem when reading 8 bit register 0x%02X",
reg_address);
goto error_ret;
}
*val = st->rx[1];
error_ret:
mutex_unlock(&st->buf_lock);
return ret;
}
static int ade7759_spi_read_reg_16(struct device *dev,
u8 reg_address,
u16 *val)
{
struct spi_message msg;
struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct ade7759_state *st = iio_dev_get_devdata(indio_dev);
int ret;
struct spi_transfer xfers[] = {
{
.tx_buf = st->tx,
.rx_buf = st->rx,
.bits_per_word = 8,
.len = 3,
},
};
mutex_lock(&st->buf_lock);
st->tx[0] = ADE7759_READ_REG(reg_address);
st->tx[1] = 0;
st->tx[2] = 0;
spi_message_init(&msg);
spi_message_add_tail(xfers, &msg);
ret = spi_sync(st->us, &msg);
if (ret) {
dev_err(&st->us->dev, "problem when reading 16 bit register 0x%02X",
reg_address);
goto error_ret;
}
*val = (st->rx[1] << 8) | st->rx[2];
error_ret:
mutex_unlock(&st->buf_lock);
return ret;
}
static int ade7759_spi_read_reg_40(struct device *dev,
u8 reg_address,
u64 *val)
{
struct spi_message msg;
struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct ade7759_state *st = iio_dev_get_devdata(indio_dev);
int ret;
struct spi_transfer xfers[] = {
{
.tx_buf = st->tx,
.rx_buf = st->rx,
.bits_per_word = 8,
.len = 6,
},
};
mutex_lock(&st->buf_lock);
st->tx[0] = ADE7759_READ_REG(reg_address);
memset(&st->tx[1], 0 , 5);
spi_message_init(&msg);
spi_message_add_tail(xfers, &msg);
ret = spi_sync(st->us, &msg);
if (ret) {
dev_err(&st->us->dev, "problem when reading 40 bit register 0x%02X",
reg_address);
goto error_ret;
}
*val = ((u64)st->rx[1] << 32) | (st->rx[2] << 24) |
(st->rx[3] << 16) | (st->rx[4] << 8) | st->rx[5];
error_ret:
mutex_unlock(&st->buf_lock);
return ret;
}
static ssize_t ade7759_read_8bit(struct device *dev,
struct device_attribute *attr,
char *buf)
{
int ret;
u8 val = 0;
struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
ret = ade7759_spi_read_reg_8(dev, this_attr->address, &val);
if (ret)
return ret;
return sprintf(buf, "%u\n", val);
}
static ssize_t ade7759_read_16bit(struct device *dev,
struct device_attribute *attr,
char *buf)
{
int ret;
u16 val = 0;
struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
ret = ade7759_spi_read_reg_16(dev, this_attr->address, &val);
if (ret)
return ret;
return sprintf(buf, "%u\n", val);
}
static ssize_t ade7759_read_40bit(struct device *dev,
struct device_attribute *attr,
char *buf)
{
int ret;
u64 val = 0;
struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
ret = ade7759_spi_read_reg_40(dev, this_attr->address, &val);
if (ret)
return ret;
return sprintf(buf, "%llu\n", val);
}
static ssize_t ade7759_write_8bit(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t len)
{
struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
int ret;
long val;
ret = strict_strtol(buf, 10, &val);
if (ret)
goto error_ret;
ret = ade7759_spi_write_reg_8(dev, this_attr->address, val);
error_ret:
return ret ? ret : len;
}
static ssize_t ade7759_write_16bit(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t len)
{
struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
int ret;
long val;
ret = strict_strtol(buf, 10, &val);
if (ret)
goto error_ret;
ret = ade7759_spi_write_reg_16(dev, this_attr->address, val);
error_ret:
return ret ? ret : len;
}
static int ade7759_reset(struct device *dev)
{
int ret;
u16 val;
ade7759_spi_read_reg_16(dev,
ADE7759_MODE,
&val);
val |= 1 << 6; /* Software Chip Reset */
ret = ade7759_spi_write_reg_16(dev,
ADE7759_MODE,
val);
return ret;
}
static ssize_t ade7759_write_reset(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t len)
{
if (len < 1)
return -1;
switch (buf[0]) {
case '1':
case 'y':
case 'Y':
return ade7759_reset(dev);
}
return -1;
}
static IIO_DEV_ATTR_AENERGY(ade7759_read_40bit, ADE7759_AENERGY);
static IIO_DEV_ATTR_CFDEN(S_IWUSR | S_IRUGO,
ade7759_read_16bit,
ade7759_write_16bit,
ADE7759_CFDEN);
static IIO_DEV_ATTR_CFNUM(S_IWUSR | S_IRUGO,
ade7759_read_8bit,
ade7759_write_8bit,
ADE7759_CFNUM);
static IIO_DEV_ATTR_CHKSUM(ade7759_read_8bit, ADE7759_CHKSUM);
static IIO_DEV_ATTR_PHCAL(S_IWUSR | S_IRUGO,
ade7759_read_16bit,
ade7759_write_16bit,
ADE7759_PHCAL);
static IIO_DEV_ATTR_APOS(S_IWUSR | S_IRUGO,
ade7759_read_16bit,
ade7759_write_16bit,
ADE7759_APOS);
static IIO_DEV_ATTR_SAGCYC(S_IWUSR | S_IRUGO,
ade7759_read_8bit,
ade7759_write_8bit,
ADE7759_SAGCYC);
static IIO_DEV_ATTR_SAGLVL(S_IWUSR | S_IRUGO,
ade7759_read_8bit,
ade7759_write_8bit,
ADE7759_SAGLVL);
static IIO_DEV_ATTR_LINECYC(S_IWUSR | S_IRUGO,
ade7759_read_8bit,
ade7759_write_8bit,
ADE7759_LINECYC);
static IIO_DEV_ATTR_LENERGY(ade7759_read_40bit, ADE7759_LENERGY);
static IIO_DEV_ATTR_PGA_GAIN(S_IWUSR | S_IRUGO,
ade7759_read_8bit,
ade7759_write_8bit,
ADE7759_GAIN);
static IIO_DEV_ATTR_ACTIVE_POWER_GAIN(S_IWUSR | S_IRUGO,
ade7759_read_16bit,
ade7759_write_16bit,
ADE7759_APGAIN);
static IIO_DEV_ATTR_CH_OFF(1, S_IWUSR | S_IRUGO,
ade7759_read_8bit,
ade7759_write_8bit,
ADE7759_CH1OS);
static IIO_DEV_ATTR_CH_OFF(2, S_IWUSR | S_IRUGO,
ade7759_read_8bit,
ade7759_write_8bit,
ADE7759_CH2OS);
static int ade7759_set_irq(struct device *dev, bool enable)
{
int ret;
u8 irqen;
ret = ade7759_spi_read_reg_8(dev, ADE7759_IRQEN, &irqen);
if (ret)
goto error_ret;
if (enable)
irqen |= 1 << 3; /* Enables an interrupt when a data is
present in the waveform register */
else
irqen &= ~(1 << 3);
ret = ade7759_spi_write_reg_8(dev, ADE7759_IRQEN, irqen);
if (ret)
goto error_ret;
error_ret:
return ret;
}
/* Power down the device */
int ade7759_stop_device(struct device *dev)
{
int ret;
u16 val;
ade7759_spi_read_reg_16(dev,
ADE7759_MODE,
&val);
val |= 1 << 4; /* AD converters can be turned off */
ret = ade7759_spi_write_reg_16(dev,
ADE7759_MODE,
val);
return ret;
}
static int ade7759_initial_setup(struct ade7759_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 = ade7759_set_irq(dev, false);
if (ret) {
dev_err(dev, "disable irq failed");
goto err_ret;
}
ade7759_reset(dev);
msleep(ADE7759_STARTUP_DELAY);
err_ret:
return ret;
}
static ssize_t ade7759_read_frequency(struct device *dev,
struct device_attribute *attr,
char *buf)
{
int ret, len = 0;
u16 t;
int sps;
ret = ade7759_spi_read_reg_16(dev,
ADE7759_MODE,
&t);
if (ret)
return ret;
t = (t >> 3) & 0x3;
sps = 27900 / (1 + t);
len = sprintf(buf, "%d SPS\n", sps);
return len;
}
static ssize_t ade7759_write_frequency(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t len)
{
struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct ade7759_state *st = iio_dev_get_devdata(indio_dev);
unsigned long val;
int ret;
u16 reg, t;
ret = strict_strtol(buf, 10, &val);
if (ret)
return ret;
mutex_lock(&indio_dev->mlock);
t = (27900 / val);
if (t > 0)
t--;
if (t > 1)
st->us->max_speed_hz = ADE7759_SPI_SLOW;
else
st->us->max_speed_hz = ADE7759_SPI_FAST;
ret = ade7759_spi_read_reg_16(dev,
ADE7759_MODE,
&reg);
if (ret)
goto out;
reg &= ~(3 << 13);
reg |= t << 13;
ret = ade7759_spi_write_reg_16(dev,
ADE7759_MODE,
reg);
out:
mutex_unlock(&indio_dev->mlock);
return ret ? ret : len;
}
static IIO_DEV_ATTR_TEMP_RAW(ade7759_read_8bit);
static IIO_CONST_ATTR(temp_offset, "70 C");
static IIO_CONST_ATTR(temp_scale, "1 C");
static IIO_DEV_ATTR_SAMP_FREQ(S_IWUSR | S_IRUGO,
ade7759_read_frequency,
ade7759_write_frequency);
static IIO_DEV_ATTR_RESET(ade7759_write_reset);
static IIO_CONST_ATTR_SAMP_FREQ_AVAIL("27900 14000 7000 3500");
static IIO_CONST_ATTR(name, "ade7759");
static struct attribute *ade7759_event_attributes[] = {
NULL
};
static struct attribute_group ade7759_event_attribute_group = {
.attrs = ade7759_event_attributes,
};
static struct attribute *ade7759_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_const_attr_sampling_frequency_available.dev_attr.attr,
&iio_dev_attr_reset.dev_attr.attr,
&iio_const_attr_name.dev_attr.attr,
&iio_dev_attr_phcal.dev_attr.attr,
&iio_dev_attr_cfden.dev_attr.attr,
&iio_dev_attr_aenergy.dev_attr.attr,
&iio_dev_attr_cfnum.dev_attr.attr,
&iio_dev_attr_apos.dev_attr.attr,
&iio_dev_attr_sagcyc.dev_attr.attr,
&iio_dev_attr_saglvl.dev_attr.attr,
&iio_dev_attr_linecyc.dev_attr.attr,
&iio_dev_attr_lenergy.dev_attr.attr,
&iio_dev_attr_chksum.dev_attr.attr,
&iio_dev_attr_pga_gain.dev_attr.attr,
&iio_dev_attr_active_power_gain.dev_attr.attr,
&iio_dev_attr_choff_1.dev_attr.attr,
&iio_dev_attr_choff_2.dev_attr.attr,
NULL,
};
static const struct attribute_group ade7759_attribute_group = {
.attrs = ade7759_attributes,
};
static int __devinit ade7759_probe(struct spi_device *spi)
{
int ret, regdone = 0;
struct ade7759_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)*ADE7759_MAX_RX, GFP_KERNEL);
if (st->rx == NULL) {
ret = -ENOMEM;
goto error_free_st;
}
st->tx = kzalloc(sizeof(*st->tx)*ADE7759_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 */
st->indio_dev = iio_allocate_device();
if (st->indio_dev == NULL) {
ret = -ENOMEM;
goto error_free_tx;
}
st->indio_dev->dev.parent = &spi->dev;
st->indio_dev->num_interrupt_lines = 1;
st->indio_dev->event_attrs = &ade7759_event_attribute_group;
st->indio_dev->attrs = &ade7759_attribute_group;
st->indio_dev->dev_data = (void *)(st);
st->indio_dev->driver_module = THIS_MODULE;
st->indio_dev->modes = INDIO_DIRECT_MODE;
ret = ade7759_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 = ade7759_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 = iio_register_interrupt_line(spi->irq,
st->indio_dev,
0,
IRQF_TRIGGER_FALLING,
"ade7759");
if (ret)
goto error_uninitialize_ring;
ret = ade7759_probe_trigger(st->indio_dev);
if (ret)
goto error_unregister_line;
}
/* Get the device into a sane initial state */
ret = ade7759_initial_setup(st);
if (ret)
goto error_remove_trigger;
return 0;
error_remove_trigger:
if (st->indio_dev->modes & INDIO_RING_TRIGGERED)
ade7759_remove_trigger(st->indio_dev);
error_unregister_line:
if (st->indio_dev->modes & INDIO_RING_TRIGGERED)
iio_unregister_interrupt_line(st->indio_dev, 0);
error_uninitialize_ring:
ade7759_uninitialize_ring(st->indio_dev->ring);
error_unreg_ring_funcs:
ade7759_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;
}
/* fixme, confirm ordering in this function */
static int ade7759_remove(struct spi_device *spi)
{
int ret;
struct ade7759_state *st = spi_get_drvdata(spi);
struct iio_dev *indio_dev = st->indio_dev;
ret = ade7759_stop_device(&(indio_dev->dev));
if (ret)
goto err_ret;
flush_scheduled_work();
ade7759_remove_trigger(indio_dev);
if (spi->irq && gpio_is_valid(irq_to_gpio(spi->irq)) > 0)
iio_unregister_interrupt_line(indio_dev, 0);
ade7759_uninitialize_ring(indio_dev->ring);
ade7759_unconfigure_ring(indio_dev);
iio_device_unregister(indio_dev);
kfree(st->tx);
kfree(st->rx);
kfree(st);
return 0;
err_ret:
return ret;
}
static struct spi_driver ade7759_driver = {
.driver = {
.name = "ade7759",
.owner = THIS_MODULE,
},
.probe = ade7759_probe,
.remove = __devexit_p(ade7759_remove),
};
static __init int ade7759_init(void)
{
return spi_register_driver(&ade7759_driver);
}
module_init(ade7759_init);
static __exit void ade7759_exit(void)
{
spi_unregister_driver(&ade7759_driver);
}
module_exit(ade7759_exit);
MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
MODULE_DESCRIPTION("Analog Devices ADE7759 Active Energy Metering IC Driver");
MODULE_LICENSE("GPL v2");

122
drivers/staging/iio/meter/ade7759.h Normal file
Просмотреть файл

@ -0,0 +1,122 @@
#ifndef _ADE7759_H
#define _ADE7759_H
#define ADE7759_WAVEFORM 0x01
#define ADE7759_AENERGY 0x02
#define ADE7759_RSTENERGY 0x03
#define ADE7759_STATUS 0x04
#define ADE7759_RSTSTATUS 0x05
#define ADE7759_MODE 0x06
#define ADE7759_CFDEN 0x07
#define ADE7759_CH1OS 0x08
#define ADE7759_CH2OS 0x09
#define ADE7759_GAIN 0x0A
#define ADE7759_APGAIN 0x0B
#define ADE7759_PHCAL 0x0C
#define ADE7759_APOS 0x0D
#define ADE7759_ZXTOUT 0x0E
#define ADE7759_SAGCYC 0x0F
#define ADE7759_IRQEN 0x10
#define ADE7759_SAGLVL 0x11
#define ADE7759_TEMP 0x12
#define ADE7759_LINECYC 0x13
#define ADE7759_LENERGY 0x14
#define ADE7759_CFNUM 0x15
#define ADE7759_CHKSUM 0x1E
#define ADE7759_DIEREV 0x1F
#define ADE7759_READ_REG(a) a
#define ADE7759_WRITE_REG(a) ((a) | 0x80)
#define ADE7759_MAX_TX 6
#define ADE7759_MAX_RX 6
#define ADE7759_STARTUP_DELAY 1
#define ADE7759_SPI_SLOW (u32)(300 * 1000)
#define ADE7759_SPI_BURST (u32)(1000 * 1000)
#define ADE7759_SPI_FAST (u32)(2000 * 1000)
#define DRIVER_NAME "ade7759"
/**
* struct ade7759_state - device instance specific data
* @us: actual spi_device
* @work_trigger_to_ring: bh for triggered event handling
* @inter: used to check if new interrupt has been triggered
* @last_timestamp: passing timestamp from th to bh of interrupt handler
* @indio_dev: industrial I/O device structure
* @trig: data ready trigger registered with iio
* @tx: transmit buffer
* @rx: recieve buffer
* @buf_lock: mutex to protect tx and rx
**/
struct ade7759_state {
struct spi_device *us;
struct work_struct work_trigger_to_ring;
s64 last_timestamp;
struct iio_dev *indio_dev;
struct iio_trigger *trig;
u8 *tx;
u8 *rx;
struct mutex buf_lock;
};
#if defined(CONFIG_IIO_RING_BUFFER) && defined(THIS_HAS_RING_BUFFER_SUPPORT)
/* At the moment triggers are only used for ring buffer
* filling. This may change!
*/
enum ade7759_scan {
ADE7759_SCAN_ACTIVE_POWER,
ADE7759_SCAN_CH1_CH2,
ADE7759_SCAN_CH1,
ADE7759_SCAN_CH2,
};
void ade7759_remove_trigger(struct iio_dev *indio_dev);
int ade7759_probe_trigger(struct iio_dev *indio_dev);
ssize_t ade7759_read_data_from_ring(struct device *dev,
struct device_attribute *attr,
char *buf);
int ade7759_configure_ring(struct iio_dev *indio_dev);
void ade7759_unconfigure_ring(struct iio_dev *indio_dev);
int ade7759_initialize_ring(struct iio_ring_buffer *ring);
void ade7759_uninitialize_ring(struct iio_ring_buffer *ring);
#else /* CONFIG_IIO_RING_BUFFER */
static inline void ade7759_remove_trigger(struct iio_dev *indio_dev)
{
}
static inline int ade7759_probe_trigger(struct iio_dev *indio_dev)
{
return 0;
}
static inline ssize_t
ade7759_read_data_from_ring(struct device *dev,
struct device_attribute *attr,
char *buf)
{
return 0;
}
static int ade7759_configure_ring(struct iio_dev *indio_dev)
{
return 0;
}
static inline void ade7759_unconfigure_ring(struct iio_dev *indio_dev)
{
}
static inline int ade7759_initialize_ring(struct iio_ring_buffer *ring)
{
return 0;
}
static inline void ade7759_uninitialize_ring(struct iio_ring_buffer *ring)
{
}
#endif /* CONFIG_IIO_RING_BUFFER */
#endif