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staging:iio:meter: Drop ADE7754 driver 

I announced the intent to drop some of these meter drivers
on the IIO list last cycle. This device is obsolete and not easily
obtained.  No one has come forward with suitable test hardware and
the driver would need a lot of work to move out of staging.

As such I am dropping it.  We can always bring it back again
if a user / tester emerges in the future.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Jonathan Cameron 2018-05-12 18:51:02 +01:00
parent cfbcdb6a98
commit d15d4be9da
3 changed files with 0 additions and 676 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/staging/iio/meter/Kconfig
View File

@ -3,16 +3,6 @@
#
menu "Active energy metering IC"
config ADE7754
tristate "Analog Devices ADE7754 Polyphase Multifunction Energy Metering IC Driver"
depends on SPI
help
Say yes here to build support for Analog Devices ADE7754 Polyphase
Multifunction Energy Metering IC Driver.
To compile this driver as a module, choose M here: the
module will be called ade7754.
config ADE7758
tristate "Analog Devices ADE7758 Poly Phase Multifunction Energy Metering IC Driver"
depends on SPI

2
drivers/staging/iio/meter/Makefile
View File

@ -3,8 +3,6 @@
# Makefile for metering ic drivers
#
obj-$(CONFIG_ADE7754) += ade7754.o
ade7758-y := ade7758_core.o
ade7758-$(CONFIG_IIO_BUFFER) += ade7758_ring.o ade7758_trigger.o
obj-$(CONFIG_ADE7758) += ade7758.o

664
drivers/staging/iio/meter/ade7754.c
View File

@ -1,664 +0,0 @@
/*
* ADE7754 Polyphase Multifunction Energy Metering IC Driver
*
* Copyright 2010 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/spi/spi.h>
#include <linux/slab.h>
#include <linux/sysfs.h>
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
#include "meter.h"
#define ADE7754_AENERGY 0x01
#define ADE7754_RAENERGY 0x02
#define ADE7754_LAENERGY 0x03
#define ADE7754_VAENERGY 0x04
#define ADE7754_RVAENERGY 0x05
#define ADE7754_LVAENERGY 0x06
#define ADE7754_PERIOD 0x07
#define ADE7754_TEMP 0x08
#define ADE7754_WFORM 0x09
#define ADE7754_OPMODE 0x0A
#define ADE7754_MMODE 0x0B
#define ADE7754_WAVMODE 0x0C
#define ADE7754_WATMODE 0x0D
#define ADE7754_VAMODE 0x0E
#define ADE7754_IRQEN 0x0F
#define ADE7754_STATUS 0x10
#define ADE7754_RSTATUS 0x11
#define ADE7754_ZXTOUT 0x12
#define ADE7754_LINCYC 0x13
#define ADE7754_SAGCYC 0x14
#define ADE7754_SAGLVL 0x15
#define ADE7754_VPEAK 0x16
#define ADE7754_IPEAK 0x17
#define ADE7754_GAIN 0x18
#define ADE7754_AWG 0x19
#define ADE7754_BWG 0x1A
#define ADE7754_CWG 0x1B
#define ADE7754_AVAG 0x1C
#define ADE7754_BVAG 0x1D
#define ADE7754_CVAG 0x1E
#define ADE7754_APHCAL 0x1F
#define ADE7754_BPHCAL 0x20
#define ADE7754_CPHCAL 0x21
#define ADE7754_AAPOS 0x22
#define ADE7754_BAPOS 0x23
#define ADE7754_CAPOS 0x24
#define ADE7754_CFNUM 0x25
#define ADE7754_CFDEN 0x26
#define ADE7754_WDIV 0x27
#define ADE7754_VADIV 0x28
#define ADE7754_AIRMS 0x29
#define ADE7754_BIRMS 0x2A
#define ADE7754_CIRMS 0x2B
#define ADE7754_AVRMS 0x2C
#define ADE7754_BVRMS 0x2D
#define ADE7754_CVRMS 0x2E
#define ADE7754_AIRMSOS 0x2F
#define ADE7754_BIRMSOS 0x30
#define ADE7754_CIRMSOS 0x31
#define ADE7754_AVRMSOS 0x32
#define ADE7754_BVRMSOS 0x33
#define ADE7754_CVRMSOS 0x34
#define ADE7754_AAPGAIN 0x35
#define ADE7754_BAPGAIN 0x36
#define ADE7754_CAPGAIN 0x37
#define ADE7754_AVGAIN 0x38
#define ADE7754_BVGAIN 0x39
#define ADE7754_CVGAIN 0x3A
#define ADE7754_CHKSUM 0x3E
#define ADE7754_VERSION 0x3F
#define ADE7754_READ_REG(a) a
#define ADE7754_WRITE_REG(a) ((a) | 0x80)
#define ADE7754_MAX_TX 4
#define ADE7754_MAX_RX 4
#define ADE7754_STARTUP_DELAY 1000
#define ADE7754_SPI_SLOW (u32)(300 * 1000)
#define ADE7754_SPI_BURST (u32)(1000 * 1000)
#define ADE7754_SPI_FAST (u32)(2000 * 1000)
/**
* struct ade7754_state - device instance specific data
* @us: actual spi_device
* @buf_lock: mutex to protect tx, rx and write frequency
* @tx: transmit buffer
* @rx: receive buffer
**/
struct ade7754_state {
struct spi_device *us;
struct mutex buf_lock;
u8 tx[ADE7754_MAX_TX] ____cacheline_aligned;
u8 rx[ADE7754_MAX_RX];
};
/* Unlocked version of ade7754_spi_write_reg_8 function */
static int __ade7754_spi_write_reg_8(struct device *dev, u8 reg_address, u8 val)
{
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
struct ade7754_state *st = iio_priv(indio_dev);
st->tx[0] = ADE7754_WRITE_REG(reg_address);
st->tx[1] = val;
return spi_write(st->us, st->tx, 2);
}
static int ade7754_spi_write_reg_8(struct device *dev, u8 reg_address, u8 val)
{
int ret;
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
struct ade7754_state *st = iio_priv(indio_dev);
mutex_lock(&st->buf_lock);
ret = __ade7754_spi_write_reg_8(dev, reg_address, val);
mutex_unlock(&st->buf_lock);
return ret;
}
static int ade7754_spi_write_reg_16(struct device *dev,
u8 reg_address, u16 val)
{
int ret;
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
struct ade7754_state *st = iio_priv(indio_dev);
mutex_lock(&st->buf_lock);
st->tx[0] = ADE7754_WRITE_REG(reg_address);
st->tx[1] = (val >> 8) & 0xFF;
st->tx[2] = val & 0xFF;
ret = spi_write(st->us, st->tx, 3);
mutex_unlock(&st->buf_lock);
return ret;
}
static int ade7754_spi_read_reg_8(struct device *dev, u8 reg_address, u8 *val)
{
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
struct ade7754_state *st = iio_priv(indio_dev);
int ret;
ret = spi_w8r8(st->us, ADE7754_READ_REG(reg_address));
if (ret < 0) {
dev_err(&st->us->dev, "problem when reading 8 bit register 0x%02X",
reg_address);
return ret;
}
*val = ret;
return 0;
}
static int ade7754_spi_read_reg_16(struct device *dev,
u8 reg_address, u16 *val)
{
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
struct ade7754_state *st = iio_priv(indio_dev);
int ret;
ret = spi_w8r16be(st->us, ADE7754_READ_REG(reg_address));
if (ret < 0) {
dev_err(&st->us->dev, "problem when reading 16 bit register 0x%02X",
reg_address);
return ret;
}
*val = ret;
return 0;
}
static int ade7754_spi_read_reg_24(struct device *dev,
u8 reg_address, u32 *val)
{
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
struct ade7754_state *st = iio_priv(indio_dev);
int ret;
struct spi_transfer xfers[] = {
{
.tx_buf = st->tx,
.rx_buf = st->rx,
.bits_per_word = 8,
.len = 4,
},
};
mutex_lock(&st->buf_lock);
st->tx[0] = ADE7754_READ_REG(reg_address);
st->tx[1] = 0;
st->tx[2] = 0;
st->tx[3] = 0;
ret = spi_sync_transfer(st->us, xfers, ARRAY_SIZE(xfers));
if (ret) {
dev_err(&st->us->dev, "problem when reading 24 bit register 0x%02X",
reg_address);
goto error_ret;
}
*val = (st->rx[1] << 16) | (st->rx[2] << 8) | st->rx[3];
error_ret:
mutex_unlock(&st->buf_lock);
return ret;
}
static ssize_t ade7754_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 = ade7754_spi_read_reg_8(dev, this_attr->address, &val);
if (ret)
return ret;
return sprintf(buf, "%u\n", val);
}
static ssize_t ade7754_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 = ade7754_spi_read_reg_16(dev, this_attr->address, &val);
if (ret)
return ret;
return sprintf(buf, "%u\n", val);
}
static ssize_t ade7754_read_24bit(struct device *dev,
struct device_attribute *attr,
char *buf)
{
int ret;
u32 val = 0;
struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
ret = ade7754_spi_read_reg_24(dev, this_attr->address, &val);
if (ret)
return ret;
return sprintf(buf, "%u\n", val & 0xFFFFFF);
}
static ssize_t ade7754_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;
u8 val;
ret = kstrtou8(buf, 10, &val);
if (ret)
goto error_ret;
ret = ade7754_spi_write_reg_8(dev, this_attr->address, val);
error_ret:
return ret ? ret : len;
}
static ssize_t ade7754_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;
u16 val;
ret = kstrtou16(buf, 10, &val);
if (ret)
goto error_ret;
ret = ade7754_spi_write_reg_16(dev, this_attr->address, val);
error_ret:
return ret ? ret : len;
}
static int ade7754_reset(struct device *dev)
{
int ret;
u8 val;
ret = ade7754_spi_read_reg_8(dev, ADE7754_OPMODE, &val);
if (ret < 0)
return ret;
val |= BIT(6); /* Software Chip Reset */
return ade7754_spi_write_reg_8(dev, ADE7754_OPMODE, val);
}
static IIO_DEV_ATTR_AENERGY(ade7754_read_24bit, ADE7754_AENERGY);
static IIO_DEV_ATTR_LAENERGY(ade7754_read_24bit, ADE7754_LAENERGY);
static IIO_DEV_ATTR_VAENERGY(ade7754_read_24bit, ADE7754_VAENERGY);
static IIO_DEV_ATTR_LVAENERGY(ade7754_read_24bit, ADE7754_LVAENERGY);
static IIO_DEV_ATTR_VPEAK(0644,
ade7754_read_8bit,
ade7754_write_8bit,
ADE7754_VPEAK);
static IIO_DEV_ATTR_IPEAK(0644,
ade7754_read_8bit,
ade7754_write_8bit,
ADE7754_VPEAK);
static IIO_DEV_ATTR_APHCAL(0644,
ade7754_read_8bit,
ade7754_write_8bit,
ADE7754_APHCAL);
static IIO_DEV_ATTR_BPHCAL(0644,
ade7754_read_8bit,
ade7754_write_8bit,
ADE7754_BPHCAL);
static IIO_DEV_ATTR_CPHCAL(0644,
ade7754_read_8bit,
ade7754_write_8bit,
ADE7754_CPHCAL);
static IIO_DEV_ATTR_AAPOS(0644,
ade7754_read_16bit,
ade7754_write_16bit,
ADE7754_AAPOS);
static IIO_DEV_ATTR_BAPOS(0644,
ade7754_read_16bit,
ade7754_write_16bit,
ADE7754_BAPOS);
static IIO_DEV_ATTR_CAPOS(0644,
ade7754_read_16bit,
ade7754_write_16bit,
ADE7754_CAPOS);
static IIO_DEV_ATTR_WDIV(0644,
ade7754_read_8bit,
ade7754_write_8bit,
ADE7754_WDIV);
static IIO_DEV_ATTR_VADIV(0644,
ade7754_read_8bit,
ade7754_write_8bit,
ADE7754_VADIV);
static IIO_DEV_ATTR_CFNUM(0644,
ade7754_read_16bit,
ade7754_write_16bit,
ADE7754_CFNUM);
static IIO_DEV_ATTR_CFDEN(0644,
ade7754_read_16bit,
ade7754_write_16bit,
ADE7754_CFDEN);
static IIO_DEV_ATTR_ACTIVE_POWER_A_GAIN(0644,
ade7754_read_16bit,
ade7754_write_16bit,
ADE7754_AAPGAIN);
static IIO_DEV_ATTR_ACTIVE_POWER_B_GAIN(0644,
ade7754_read_16bit,
ade7754_write_16bit,
ADE7754_BAPGAIN);
static IIO_DEV_ATTR_ACTIVE_POWER_C_GAIN(0644,
ade7754_read_16bit,
ade7754_write_16bit,
ADE7754_CAPGAIN);
static IIO_DEV_ATTR_AIRMS(0444,
ade7754_read_24bit,
NULL,
ADE7754_AIRMS);
static IIO_DEV_ATTR_BIRMS(0444,
ade7754_read_24bit,
NULL,
ADE7754_BIRMS);
static IIO_DEV_ATTR_CIRMS(0444,
ade7754_read_24bit,
NULL,
ADE7754_CIRMS);
static IIO_DEV_ATTR_AVRMS(0444,
ade7754_read_24bit,
NULL,
ADE7754_AVRMS);
static IIO_DEV_ATTR_BVRMS(0444,
ade7754_read_24bit,
NULL,
ADE7754_BVRMS);
static IIO_DEV_ATTR_CVRMS(0444,
ade7754_read_24bit,
NULL,
ADE7754_CVRMS);
static IIO_DEV_ATTR_AIRMSOS(0444,
ade7754_read_16bit,
ade7754_write_16bit,
ADE7754_AIRMSOS);
static IIO_DEV_ATTR_BIRMSOS(0444,
ade7754_read_16bit,
ade7754_write_16bit,
ADE7754_BIRMSOS);
static IIO_DEV_ATTR_CIRMSOS(0444,
ade7754_read_16bit,
ade7754_write_16bit,
ADE7754_CIRMSOS);
static IIO_DEV_ATTR_AVRMSOS(0444,
ade7754_read_16bit,
ade7754_write_16bit,
ADE7754_AVRMSOS);
static IIO_DEV_ATTR_BVRMSOS(0444,
ade7754_read_16bit,
ade7754_write_16bit,
ADE7754_BVRMSOS);
static IIO_DEV_ATTR_CVRMSOS(0444,
ade7754_read_16bit,
ade7754_write_16bit,
ADE7754_CVRMSOS);
static int ade7754_set_irq(struct device *dev, bool enable)
{
int ret;
u16 irqen;
ret = ade7754_spi_read_reg_16(dev, ADE7754_IRQEN, &irqen);
if (ret)
return ret;
if (enable)
irqen |= BIT(14); /* Enables an interrupt when a data is
* present in the waveform register
*/
else
irqen &= ~BIT(14);
return ade7754_spi_write_reg_16(dev, ADE7754_IRQEN, irqen);
}
/* Power down the device */
static int ade7754_stop_device(struct device *dev)
{
int ret;
u8 val;
ret = ade7754_spi_read_reg_8(dev, ADE7754_OPMODE, &val);
if (ret < 0) {
dev_err(dev, "unable to power down the device, error: %d",
ret);
return ret;
}
val |= 7 << 3; /* ADE7754 powered down */
return ade7754_spi_write_reg_8(dev, ADE7754_OPMODE, val);
}
static int ade7754_initial_setup(struct iio_dev *indio_dev)
{
int ret;
struct ade7754_state *st = iio_priv(indio_dev);
struct device *dev = &indio_dev->dev;
/* use low spi speed for init */
st->us->mode = SPI_MODE_3;
spi_setup(st->us);
/* Disable IRQ */
ret = ade7754_set_irq(dev, false);
if (ret) {
dev_err(dev, "disable irq failed");
goto err_ret;
}
ade7754_reset(dev);
usleep_range(ADE7754_STARTUP_DELAY, ADE7754_STARTUP_DELAY + 100);
err_ret:
return ret;
}
static ssize_t ade7754_read_frequency(struct device *dev,
struct device_attribute *attr,
char *buf)
{
int ret;
u8 t;
int sps;
ret = ade7754_spi_read_reg_8(dev, ADE7754_WAVMODE, &t);
if (ret)
return ret;
t = (t >> 3) & 0x3;
sps = 26000 / (1 + t);
return sprintf(buf, "%d\n", sps);
}
static ssize_t ade7754_write_frequency(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t len)
{
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
struct ade7754_state *st = iio_priv(indio_dev);
u16 val;
int ret;
u8 reg, t;
ret = kstrtou16(buf, 10, &val);
if (ret)
return ret;
if (!val)
return -EINVAL;
mutex_lock(&st->buf_lock);
t = 26000 / val;
if (t > 0)
t--;
if (t > 1)
st->us->max_speed_hz = ADE7754_SPI_SLOW;
else
st->us->max_speed_hz = ADE7754_SPI_FAST;
ret = ade7754_spi_read_reg_8(dev, ADE7754_WAVMODE, &reg);
if (ret)
goto out;
reg &= ~(3 << 3);
reg |= t << 3;
ret = __ade7754_spi_write_reg_8(dev, ADE7754_WAVMODE, reg);
out:
mutex_unlock(&st->buf_lock);
return ret ? ret : len;
}
static IIO_DEV_ATTR_TEMP_RAW(ade7754_read_8bit);
static IIO_CONST_ATTR(in_temp_offset, "129 C");
static IIO_CONST_ATTR(in_temp_scale, "4 C");
static IIO_DEV_ATTR_SAMP_FREQ(0644,
ade7754_read_frequency,
ade7754_write_frequency);
static IIO_CONST_ATTR_SAMP_FREQ_AVAIL("26000 13000 65000 33000");
static struct attribute *ade7754_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_dev_attr_sampling_frequency.dev_attr.attr,
&iio_const_attr_sampling_frequency_available.dev_attr.attr,
&iio_dev_attr_aenergy.dev_attr.attr,
&iio_dev_attr_laenergy.dev_attr.attr,
&iio_dev_attr_vaenergy.dev_attr.attr,
&iio_dev_attr_lvaenergy.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_aapos.dev_attr.attr,
&iio_dev_attr_bapos.dev_attr.attr,
&iio_dev_attr_capos.dev_attr.attr,
&iio_dev_attr_wdiv.dev_attr.attr,
&iio_dev_attr_vadiv.dev_attr.attr,
&iio_dev_attr_cfnum.dev_attr.attr,
&iio_dev_attr_cfden.dev_attr.attr,
&iio_dev_attr_active_power_a_gain.dev_attr.attr,
&iio_dev_attr_active_power_b_gain.dev_attr.attr,
&iio_dev_attr_active_power_c_gain.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_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 ade7754_attribute_group = {
.attrs = ade7754_attributes,
};
static const struct iio_info ade7754_info = {
.attrs = &ade7754_attribute_group,
};
static int ade7754_probe(struct spi_device *spi)
{
int ret;
struct ade7754_state *st;
struct iio_dev *indio_dev;
/* setup the industrialio driver allocated elements */
indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
if (!indio_dev)
return -ENOMEM;
/* this is only used for removal purposes */
spi_set_drvdata(spi, indio_dev);
st = iio_priv(indio_dev);
st->us = spi;
mutex_init(&st->buf_lock);
indio_dev->name = spi->dev.driver->name;
indio_dev->dev.parent = &spi->dev;
indio_dev->info = &ade7754_info;
indio_dev->modes = INDIO_DIRECT_MODE;
/* Get the device into a sane initial state */
ret = ade7754_initial_setup(indio_dev);
if (ret)
goto powerdown_on_error;
ret = iio_device_register(indio_dev);
if (ret)
goto powerdown_on_error;
return ret;
powerdown_on_error:
ade7754_stop_device(&indio_dev->dev);
return ret;
}
static int ade7754_remove(struct spi_device *spi)
{
struct iio_dev *indio_dev = spi_get_drvdata(spi);
iio_device_unregister(indio_dev);
ade7754_stop_device(&indio_dev->dev);
return 0;
}
static struct spi_driver ade7754_driver = {
.driver = {
.name = "ade7754",
},
.probe = ade7754_probe,
.remove = ade7754_remove,
};
module_spi_driver(ade7754_driver);
MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
MODULE_DESCRIPTION("Analog Devices ADE7754 Polyphase Multifunction Energy Metering IC Driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("spi:ad7754");