On Sat, 12 May 2018 18:51:04 +0100 Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> wrote: > 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 This device is obsolete and not easily 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@xxxxxxxxxx> Applied. > --- > drivers/staging/iio/meter/Kconfig | 10 - > drivers/staging/iio/meter/Makefile | 1 - > drivers/staging/iio/meter/ade7759.c | 558 ---------------------------- > 3 files changed, 569 deletions(-) > > diff --git a/drivers/staging/iio/meter/Kconfig b/drivers/staging/iio/meter/Kconfig > index 451ac47bb0cc..e01eb8abcdce 100644 > --- a/drivers/staging/iio/meter/Kconfig > +++ b/drivers/staging/iio/meter/Kconfig > @@ -3,16 +3,6 @@ > # > menu "Active energy metering IC" > > -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. > - > - To compile this driver as a module, choose M here: the > - module will be called ade7759. > - > config ADE7854 > tristate "Analog Devices ADE7854/58/68/78 Polyphase Multifunction Energy Metering IC Driver" > depends on SPI || I2C > diff --git a/drivers/staging/iio/meter/Makefile b/drivers/staging/iio/meter/Makefile > index a36ff1668275..ed4547e38f3a 100644 > --- a/drivers/staging/iio/meter/Makefile > +++ b/drivers/staging/iio/meter/Makefile > @@ -3,7 +3,6 @@ > # Makefile for metering ic drivers > # > > -obj-$(CONFIG_ADE7759) += ade7759.o > obj-$(CONFIG_ADE7854) += ade7854.o > obj-$(CONFIG_ADE7854_I2C) += ade7854-i2c.o > obj-$(CONFIG_ADE7854_SPI) += ade7854-spi.o > diff --git a/drivers/staging/iio/meter/ade7759.c b/drivers/staging/iio/meter/ade7759.c > deleted file mode 100644 > index c078b770fa53..000000000000 > --- a/drivers/staging/iio/meter/ade7759.c > +++ /dev/null > @@ -1,558 +0,0 @@ > -/* > - * 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/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 <linux/module.h> > - > -#include <linux/iio/iio.h> > -#include <linux/iio/sysfs.h> > -#include "meter.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 1000 > - > -#define ADE7759_SPI_SLOW (u32)(300 * 1000) > -#define ADE7759_SPI_BURST (u32)(1000 * 1000) > -#define ADE7759_SPI_FAST (u32)(2000 * 1000) > - > -/** > - * struct ade7759_state - device instance specific data > - * @us: actual spi_device > - * @buf_lock: mutex to protect tx and rx and write frequency > - * @tx: transmit buffer > - * @rx: receive buffer > - **/ > -struct ade7759_state { > - struct spi_device *us; > - struct mutex buf_lock; > - u8 tx[ADE7759_MAX_TX] ____cacheline_aligned; > - u8 rx[ADE7759_MAX_RX]; > -}; > - > -static int ade7759_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 ade7759_state *st = iio_priv(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; > -} > - > -/*Unlocked version of ade7759_spi_write_reg_16 function */ > -static int __ade7759_spi_write_reg_16(struct device *dev, > - u8 reg_address, > - u16 value) > -{ > - struct iio_dev *indio_dev = dev_to_iio_dev(dev); > - struct ade7759_state *st = iio_priv(indio_dev); > - > - st->tx[0] = ADE7759_WRITE_REG(reg_address); > - st->tx[1] = (value >> 8) & 0xFF; > - st->tx[2] = value & 0xFF; > - return spi_write(st->us, st->tx, 3); > -} > - > -static int ade7759_spi_write_reg_16(struct device *dev, > - u8 reg_address, > - u16 value) > -{ > - int ret; > - struct iio_dev *indio_dev = dev_to_iio_dev(dev); > - struct ade7759_state *st = iio_priv(indio_dev); > - > - mutex_lock(&st->buf_lock); > - ret = __ade7759_spi_write_reg_16(dev, reg_address, value); > - mutex_unlock(&st->buf_lock); > - > - return ret; > -} > - > -static int ade7759_spi_read_reg_8(struct device *dev, > - u8 reg_address, > - u8 *val) > -{ > - struct iio_dev *indio_dev = dev_to_iio_dev(dev); > - struct ade7759_state *st = iio_priv(indio_dev); > - int ret; > - > - ret = spi_w8r8(st->us, ADE7759_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 ade7759_spi_read_reg_16(struct device *dev, > - u8 reg_address, > - u16 *val) > -{ > - struct iio_dev *indio_dev = dev_to_iio_dev(dev); > - struct ade7759_state *st = iio_priv(indio_dev); > - int ret; > - > - ret = spi_w8r16be(st->us, ADE7759_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 ade7759_spi_read_reg_40(struct device *dev, > - u8 reg_address, > - u64 *val) > -{ > - struct iio_dev *indio_dev = dev_to_iio_dev(dev); > - struct ade7759_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 = 6, > - }, > - }; > - > - mutex_lock(&st->buf_lock); > - st->tx[0] = ADE7759_READ_REG(reg_address); > - memset(&st->tx[1], 0, 5); > - > - ret = spi_sync_transfer(st->us, xfers, ARRAY_SIZE(xfers)); > - 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) | ((u64)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; > - u8 val; > - > - ret = kstrtou8(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; > - u16 val; > - > - ret = kstrtou16(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; > - > - ret = ade7759_spi_read_reg_16(dev, ADE7759_MODE, &val); > - if (ret < 0) > - return ret; > - > - val |= BIT(6); /* Software Chip Reset */ > - return ade7759_spi_write_reg_16(dev, > - ADE7759_MODE, > - val); > -} > - > -static IIO_DEV_ATTR_AENERGY(ade7759_read_40bit, ADE7759_AENERGY); > -static IIO_DEV_ATTR_CFDEN(0644, > - ade7759_read_16bit, > - ade7759_write_16bit, > - ADE7759_CFDEN); > -static IIO_DEV_ATTR_CFNUM(0644, > - ade7759_read_8bit, > - ade7759_write_8bit, > - ADE7759_CFNUM); > -static IIO_DEV_ATTR_CHKSUM(ade7759_read_8bit, ADE7759_CHKSUM); > -static IIO_DEV_ATTR_PHCAL(0644, > - ade7759_read_16bit, > - ade7759_write_16bit, > - ADE7759_PHCAL); > -static IIO_DEV_ATTR_APOS(0644, > - ade7759_read_16bit, > - ade7759_write_16bit, > - ADE7759_APOS); > -static IIO_DEV_ATTR_SAGCYC(0644, > - ade7759_read_8bit, > - ade7759_write_8bit, > - ADE7759_SAGCYC); > -static IIO_DEV_ATTR_SAGLVL(0644, > - ade7759_read_8bit, > - ade7759_write_8bit, > - ADE7759_SAGLVL); > -static IIO_DEV_ATTR_LINECYC(0644, > - ade7759_read_8bit, > - ade7759_write_8bit, > - ADE7759_LINECYC); > -static IIO_DEV_ATTR_LENERGY(ade7759_read_40bit, ADE7759_LENERGY); > -static IIO_DEV_ATTR_PGA_GAIN(0644, > - ade7759_read_8bit, > - ade7759_write_8bit, > - ADE7759_GAIN); > -static IIO_DEV_ATTR_ACTIVE_POWER_GAIN(0644, > - ade7759_read_16bit, > - ade7759_write_16bit, > - ADE7759_APGAIN); > - > -static IIO_DEVICE_ATTR(choff_1, 0644, > - ade7759_read_8bit, > - ade7759_write_8bit, > - ADE7759_CH1OS); > - > -static IIO_DEVICE_ATTR(choff_2, 0644, > - 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 |= BIT(3); /* Enables an interrupt when a data is > - * present in the waveform register > - */ > - else > - irqen &= ~BIT(3); > - > - ret = ade7759_spi_write_reg_8(dev, ADE7759_IRQEN, irqen); > - > -error_ret: > - return ret; > -} > - > -/* Power down the device */ > -static int ade7759_stop_device(struct device *dev) > -{ > - int ret; > - u16 val; > - > - ret = ade7759_spi_read_reg_16(dev, ADE7759_MODE, &val); > - if (ret < 0) { > - dev_err(dev, "unable to power down the device, error: %d\n", > - ret); > - return ret; > - } > - > - val |= BIT(4); /* AD converters can be turned off */ > - > - return ade7759_spi_write_reg_16(dev, ADE7759_MODE, val); > -} > - > -static int ade7759_initial_setup(struct iio_dev *indio_dev) > -{ > - int ret; > - struct ade7759_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 = ade7759_set_irq(dev, false); > - if (ret) { > - dev_err(dev, "disable irq failed"); > - goto err_ret; > - } > - > - ade7759_reset(dev); > - usleep_range(ADE7759_STARTUP_DELAY, ADE7759_STARTUP_DELAY + 100); > - > -err_ret: > - return ret; > -} > - > -static ssize_t ade7759_read_frequency(struct device *dev, > - struct device_attribute *attr, > - char *buf) > -{ > - int ret; > - 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); > - > - return sprintf(buf, "%d\n", sps); > -} > - > -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_to_iio_dev(dev); > - struct ade7759_state *st = iio_priv(indio_dev); > - u16 val; > - int ret; > - u16 reg, t; > - > - ret = kstrtou16(buf, 10, &val); > - if (ret) > - return ret; > - if (!val) > - return -EINVAL; > - > - mutex_lock(&st->buf_lock); > - > - 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, ®); > - if (ret) > - goto out; > - > - reg &= ~(3 << 13); > - reg |= t << 13; > - > - ret = __ade7759_spi_write_reg_16(dev, ADE7759_MODE, reg); > - > -out: > - mutex_unlock(&st->buf_lock); > - > - return ret ? ret : len; > -} > -static IIO_DEV_ATTR_TEMP_RAW(ade7759_read_8bit); > -static IIO_CONST_ATTR(in_temp_offset, "70 C"); > -static IIO_CONST_ATTR(in_temp_scale, "1 C"); > - > -static IIO_DEV_ATTR_SAMP_FREQ(0644, > - ade7759_read_frequency, > - ade7759_write_frequency); > - > -static IIO_CONST_ATTR_SAMP_FREQ_AVAIL("27900 14000 7000 3500"); > - > -static struct attribute *ade7759_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_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 const struct iio_info ade7759_info = { > - .attrs = &ade7759_attribute_group, > -}; > - > -static int ade7759_probe(struct spi_device *spi) > -{ > - int ret; > - struct ade7759_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 = &ade7759_info; > - indio_dev->modes = INDIO_DIRECT_MODE; > - > - /* Get the device into a sane initial state */ > - ret = ade7759_initial_setup(indio_dev); > - if (ret) > - return ret; > - > - return iio_device_register(indio_dev); > -} > - > -static int ade7759_remove(struct spi_device *spi) > -{ > - struct iio_dev *indio_dev = spi_get_drvdata(spi); > - > - iio_device_unregister(indio_dev); > - ade7759_stop_device(&indio_dev->dev); > - > - return 0; > -} > - > -static struct spi_driver ade7759_driver = { > - .driver = { > - .name = "ade7759", > - }, > - .probe = ade7759_probe, > - .remove = ade7759_remove, > -}; > -module_spi_driver(ade7759_driver); > - > -MODULE_AUTHOR("Barry Song <21cnbao@xxxxxxxxx>"); > -MODULE_DESCRIPTION("Analog Devices ADE7759 Active Energy Metering IC Driver"); > -MODULE_LICENSE("GPL v2"); > -MODULE_ALIAS("spi:ad7759"); -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html