Commit 1f31ee35 authored by Jonathan Cameron's avatar Jonathan Cameron

staging:iio:meter: Drop ADE7758 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 This device is obsolete and not easily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: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
parent d15d4be9
......@@ -3,18 +3,6 @@
#
menu "Active energy metering IC"
config ADE7758
tristate "Analog Devices ADE7758 Poly Phase Multifunction Energy Metering IC Driver"
depends on SPI
select IIO_TRIGGER if IIO_BUFFER
select IIO_KFIFO_BUF if IIO_BUFFER
help
Say yes here to build support for Analog Devices ADE7758 Polyphase
Multifunction Energy Metering IC with Per Phase Information Driver.
To compile this driver as a module, choose M here: the
module will be called ade7758.
config ADE7759
tristate "Analog Devices ADE7759 Active Energy Metering IC Driver"
depends on SPI
......
......@@ -3,10 +3,6 @@
# Makefile for metering ic drivers
#
ade7758-y := ade7758_core.o
ade7758-$(CONFIG_IIO_BUFFER) += ade7758_ring.o ade7758_trigger.o
obj-$(CONFIG_ADE7758) += ade7758.o
obj-$(CONFIG_ADE7759) += ade7759.o
obj-$(CONFIG_ADE7854) += ade7854.o
obj-$(CONFIG_ADE7854_I2C) += ade7854-i2c.o
......
/*
* ADE7758 Poly Phase Multifunction Energy Metering IC driver
*
* Copyright 2010-2011 Analog Devices Inc.
*
* Licensed under the GPL-2.
*/
#ifndef _ADE7758_H
#define _ADE7758_H
#define ADE7758_AWATTHR 0x01
#define ADE7758_BWATTHR 0x02
#define ADE7758_CWATTHR 0x03
#define ADE7758_AVARHR 0x04
#define ADE7758_BVARHR 0x05
#define ADE7758_CVARHR 0x06
#define ADE7758_AVAHR 0x07
#define ADE7758_BVAHR 0x08
#define ADE7758_CVAHR 0x09
#define ADE7758_AIRMS 0x0A
#define ADE7758_BIRMS 0x0B
#define ADE7758_CIRMS 0x0C
#define ADE7758_AVRMS 0x0D
#define ADE7758_BVRMS 0x0E
#define ADE7758_CVRMS 0x0F
#define ADE7758_FREQ 0x10
#define ADE7758_TEMP 0x11
#define ADE7758_WFORM 0x12
#define ADE7758_OPMODE 0x13
#define ADE7758_MMODE 0x14
#define ADE7758_WAVMODE 0x15
#define ADE7758_COMPMODE 0x16
#define ADE7758_LCYCMODE 0x17
#define ADE7758_MASK 0x18
#define ADE7758_STATUS 0x19
#define ADE7758_RSTATUS 0x1A
#define ADE7758_ZXTOUT 0x1B
#define ADE7758_LINECYC 0x1C
#define ADE7758_SAGCYC 0x1D
#define ADE7758_SAGLVL 0x1E
#define ADE7758_VPINTLVL 0x1F
#define ADE7758_IPINTLVL 0x20
#define ADE7758_VPEAK 0x21
#define ADE7758_IPEAK 0x22
#define ADE7758_GAIN 0x23
#define ADE7758_AVRMSGAIN 0x24
#define ADE7758_BVRMSGAIN 0x25
#define ADE7758_CVRMSGAIN 0x26
#define ADE7758_AIGAIN 0x27
#define ADE7758_BIGAIN 0x28
#define ADE7758_CIGAIN 0x29
#define ADE7758_AWG 0x2A
#define ADE7758_BWG 0x2B
#define ADE7758_CWG 0x2C
#define ADE7758_AVARG 0x2D
#define ADE7758_BVARG 0x2E
#define ADE7758_CVARG 0x2F
#define ADE7758_AVAG 0x30
#define ADE7758_BVAG 0x31
#define ADE7758_CVAG 0x32
#define ADE7758_AVRMSOS 0x33
#define ADE7758_BVRMSOS 0x34
#define ADE7758_CVRMSOS 0x35
#define ADE7758_AIRMSOS 0x36
#define ADE7758_BIRMSOS 0x37
#define ADE7758_CIRMSOS 0x38
#define ADE7758_AWAITOS 0x39
#define ADE7758_BWAITOS 0x3A
#define ADE7758_CWAITOS 0x3B
#define ADE7758_AVAROS 0x3C
#define ADE7758_BVAROS 0x3D
#define ADE7758_CVAROS 0x3E
#define ADE7758_APHCAL 0x3F
#define ADE7758_BPHCAL 0x40
#define ADE7758_CPHCAL 0x41
#define ADE7758_WDIV 0x42
#define ADE7758_VADIV 0x44
#define ADE7758_VARDIV 0x43
#define ADE7758_APCFNUM 0x45
#define ADE7758_APCFDEN 0x46
#define ADE7758_VARCFNUM 0x47
#define ADE7758_VARCFDEN 0x48
#define ADE7758_CHKSUM 0x7E
#define ADE7758_VERSION 0x7F
#define ADE7758_READ_REG(a) a
#define ADE7758_WRITE_REG(a) ((a) | 0x80)
#define ADE7758_MAX_TX 8
#define ADE7758_MAX_RX 4
#define ADE7758_STARTUP_DELAY 1000
#define AD7758_NUM_WAVSEL 5
#define AD7758_NUM_PHSEL 3
#define AD7758_NUM_WAVESRC (AD7758_NUM_WAVSEL * AD7758_NUM_PHSEL)
#define AD7758_PHASE_A 0
#define AD7758_PHASE_B 1
#define AD7758_PHASE_C 2
#define AD7758_CURRENT 0
#define AD7758_VOLTAGE 1
#define AD7758_ACT_PWR 2
#define AD7758_REACT_PWR 3
#define AD7758_APP_PWR 4
#define AD7758_WT(p, w) (((w) << 2) | (p))
/**
* struct ade7758_state - device instance specific data
* @us: actual spi_device
* @trig: data ready trigger registered with iio
* @tx: transmit buffer
* @rx: receive buffer
* @buf_lock: mutex to protect tx, rx, read and write frequency
**/
struct ade7758_state {
struct spi_device *us;
struct iio_trigger *trig;
u8 *tx;
u8 *rx;
struct mutex buf_lock;
struct spi_transfer ring_xfer[4];
struct spi_message ring_msg;
/*
* DMA (thus cache coherency maintenance) requires the
* transfer buffers to live in their own cache lines.
*/
unsigned char rx_buf[8] ____cacheline_aligned;
unsigned char tx_buf[8];
};
#ifdef CONFIG_IIO_BUFFER
/* At the moment triggers are only used for ring buffer
* filling. This may change!
*/
void ade7758_remove_trigger(struct iio_dev *indio_dev);
int ade7758_probe_trigger(struct iio_dev *indio_dev);
ssize_t ade7758_read_data_from_ring(struct device *dev,
struct device_attribute *attr, char *buf);
int ade7758_configure_ring(struct iio_dev *indio_dev);
void ade7758_unconfigure_ring(struct iio_dev *indio_dev);
int ade7758_set_irq(struct device *dev, bool enable);
int ade7758_spi_write_reg_8(struct device *dev, u8 reg_address, u8 val);
int ade7758_spi_read_reg_8(struct device *dev, u8 reg_address, u8 *val);
#else /* CONFIG_IIO_BUFFER */
static inline void ade7758_remove_trigger(struct iio_dev *indio_dev)
{
}
static inline int ade7758_probe_trigger(struct iio_dev *indio_dev)
{
return 0;
}
static int ade7758_configure_ring(struct iio_dev *indio_dev)
{
return 0;
}
static inline void ade7758_unconfigure_ring(struct iio_dev *indio_dev)
{
}
static inline int ade7758_initialize_ring(struct iio_ring_buffer *ring)
{
return 0;
}
static inline void ade7758_uninitialize_ring(struct iio_dev *indio_dev)
{
}
#endif /* CONFIG_IIO_BUFFER */
#endif
This diff is collapsed.
/*
* ADE7758 Poly Phase Multifunction Energy Metering IC driver
*
* Copyright 2010-2011 Analog Devices Inc.
*
* Licensed under the GPL-2.
*/
#include <linux/export.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/spi/spi.h>
#include <linux/slab.h>
#include <asm/unaligned.h>
#include <linux/iio/iio.h>
#include <linux/iio/buffer.h>
#include <linux/iio/kfifo_buf.h>
#include <linux/iio/trigger_consumer.h>
#include "ade7758.h"
/**
* ade7758_spi_read_burst() - read data registers
* @indio_dev: the IIO device
**/
static int ade7758_spi_read_burst(struct iio_dev *indio_dev)
{
struct ade7758_state *st = iio_priv(indio_dev);
int ret;
ret = spi_sync(st->us, &st->ring_msg);
if (ret)
dev_err(&st->us->dev, "problem when reading WFORM value\n");
return ret;
}
static int ade7758_write_waveform_type(struct device *dev, unsigned int type)
{
int ret;
u8 reg;
ret = ade7758_spi_read_reg_8(dev, ADE7758_WAVMODE, &reg);
if (ret)
goto out;
reg &= ~0x1F;
reg |= type & 0x1F;
ret = ade7758_spi_write_reg_8(dev, ADE7758_WAVMODE, reg);
out:
return ret;
}
/* Whilst this makes a lot of calls to iio_sw_ring functions - it is too device
* specific to be rolled into the core.
*/
static irqreturn_t ade7758_trigger_handler(int irq, void *p)
{
struct iio_poll_func *pf = p;
struct iio_dev *indio_dev = pf->indio_dev;
struct ade7758_state *st = iio_priv(indio_dev);
s64 dat64[2];
u32 *dat32 = (u32 *)dat64;
if (!bitmap_empty(indio_dev->active_scan_mask, indio_dev->masklength))
if (ade7758_spi_read_burst(indio_dev) >= 0)
*dat32 = get_unaligned_be32(&st->rx_buf[5]) & 0xFFFFFF;
iio_push_to_buffers_with_timestamp(indio_dev, dat64, pf->timestamp);
iio_trigger_notify_done(indio_dev->trig);
return IRQ_HANDLED;
}
/**
* ade7758_ring_preenable() setup the parameters of the ring before enabling
*
* The complex nature of the setting of the number of bytes per datum is due
* to this driver currently ensuring that the timestamp is stored at an 8
* byte boundary.
**/
static int ade7758_ring_preenable(struct iio_dev *indio_dev)
{
unsigned int channel;
if (bitmap_empty(indio_dev->active_scan_mask, indio_dev->masklength))
return -EINVAL;
channel = find_first_bit(indio_dev->active_scan_mask,
indio_dev->masklength);
ade7758_write_waveform_type(&indio_dev->dev,
indio_dev->channels[channel].address);
return 0;
}
static const struct iio_buffer_setup_ops ade7758_ring_setup_ops = {
.preenable = &ade7758_ring_preenable,
.postenable = &iio_triggered_buffer_postenable,
.predisable = &iio_triggered_buffer_predisable,
.validate_scan_mask = &iio_validate_scan_mask_onehot,
};
void ade7758_unconfigure_ring(struct iio_dev *indio_dev)
{
iio_dealloc_pollfunc(indio_dev->pollfunc);
iio_kfifo_free(indio_dev->buffer);
}
int ade7758_configure_ring(struct iio_dev *indio_dev)
{
struct ade7758_state *st = iio_priv(indio_dev);
struct iio_buffer *buffer;
int ret = 0;
buffer = iio_kfifo_allocate();
if (!buffer)
return -ENOMEM;
iio_device_attach_buffer(indio_dev, buffer);
indio_dev->setup_ops = &ade7758_ring_setup_ops;
indio_dev->pollfunc = iio_alloc_pollfunc(&iio_pollfunc_store_time,
&ade7758_trigger_handler,
0,
indio_dev,
"ade7759_consumer%d",
indio_dev->id);
if (!indio_dev->pollfunc) {
ret = -ENOMEM;
goto error_iio_kfifo_free;
}
indio_dev->modes |= INDIO_BUFFER_TRIGGERED;
st->tx_buf[0] = ADE7758_READ_REG(ADE7758_RSTATUS);
st->tx_buf[1] = 0;
st->tx_buf[2] = 0;
st->tx_buf[3] = 0;
st->tx_buf[4] = ADE7758_READ_REG(ADE7758_WFORM);
st->tx_buf[5] = 0;
st->tx_buf[6] = 0;
st->tx_buf[7] = 0;
/* build spi ring message */
st->ring_xfer[0].tx_buf = &st->tx_buf[0];
st->ring_xfer[0].len = 1;
st->ring_xfer[0].bits_per_word = 8;
st->ring_xfer[0].delay_usecs = 4;
st->ring_xfer[1].rx_buf = &st->rx_buf[1];
st->ring_xfer[1].len = 3;
st->ring_xfer[1].bits_per_word = 8;
st->ring_xfer[1].cs_change = 1;
st->ring_xfer[2].tx_buf = &st->tx_buf[4];
st->ring_xfer[2].len = 1;
st->ring_xfer[2].bits_per_word = 8;
st->ring_xfer[2].delay_usecs = 1;
st->ring_xfer[3].rx_buf = &st->rx_buf[5];
st->ring_xfer[3].len = 3;
st->ring_xfer[3].bits_per_word = 8;
spi_message_init(&st->ring_msg);
spi_message_add_tail(&st->ring_xfer[0], &st->ring_msg);
spi_message_add_tail(&st->ring_xfer[1], &st->ring_msg);
spi_message_add_tail(&st->ring_xfer[2], &st->ring_msg);
spi_message_add_tail(&st->ring_xfer[3], &st->ring_msg);
return 0;
error_iio_kfifo_free:
iio_kfifo_free(indio_dev->buffer);
return ret;
}
/*
* ADE7758 Poly Phase Multifunction Energy Metering IC driver
*
* Copyright 2010-2011 Analog Devices Inc.
*
* Licensed under the GPL-2.
*/
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/spi/spi.h>
#include <linux/export.h>
#include <linux/iio/iio.h>
#include <linux/iio/trigger.h>
#include "ade7758.h"
/**
* ade7758_data_rdy_trig_poll() the event handler for the data rdy trig
**/
static irqreturn_t ade7758_data_rdy_trig_poll(int irq, void *private)
{
disable_irq_nosync(irq);
iio_trigger_poll(private);
return IRQ_HANDLED;
}
/**
* ade7758_data_rdy_trigger_set_state() set datardy interrupt state
**/
static int ade7758_data_rdy_trigger_set_state(struct iio_trigger *trig,
bool state)
{
struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
dev_dbg(&indio_dev->dev, "(%d)\n", state);
return ade7758_set_irq(&indio_dev->dev, state);
}
/**
* ade7758_trig_try_reen() try renabling irq for data rdy trigger
* @trig: the datardy trigger
**/
static int ade7758_trig_try_reen(struct iio_trigger *trig)
{
struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
struct ade7758_state *st = iio_priv(indio_dev);
enable_irq(st->us->irq);
/* irq reenabled so success! */
return 0;
}
static const struct iio_trigger_ops ade7758_trigger_ops = {
.set_trigger_state = &ade7758_data_rdy_trigger_set_state,
.try_reenable = &ade7758_trig_try_reen,
};
int ade7758_probe_trigger(struct iio_dev *indio_dev)
{
struct ade7758_state *st = iio_priv(indio_dev);
int ret;
st->trig = iio_trigger_alloc("%s-dev%d",
spi_get_device_id(st->us)->name,
indio_dev->id);
if (!st->trig) {
ret = -ENOMEM;
goto error_ret;
}
ret = request_irq(st->us->irq,
ade7758_data_rdy_trig_poll,
IRQF_TRIGGER_LOW,
spi_get_device_id(st->us)->name,
st->trig);
if (ret)
goto error_free_trig;
st->trig->dev.parent = &st->us->dev;
st->trig->ops = &ade7758_trigger_ops;
iio_trigger_set_drvdata(st->trig, indio_dev);
ret = iio_trigger_register(st->trig);
/* select default trigger */
indio_dev->trig = iio_trigger_get(st->trig);
if (ret)
goto error_free_irq;
return 0;
error_free_irq:
free_irq(st->us->irq, st->trig);
error_free_trig:
iio_trigger_free(st->trig);
error_ret:
return ret;
}
void ade7758_remove_trigger(struct iio_dev *indio_dev)
{
struct ade7758_state *st = iio_priv(indio_dev);
iio_trigger_unregister(st->trig);
free_irq(st->us->irq, st->trig);
iio_trigger_free(st->trig);
}
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