From: Barry Song <barry.song@xxxxxxxxxx> Signed-off-by: Barry Song <barry.song@xxxxxxxxxx> Signed-off-by: Mike Frysinger <vapier@xxxxxxxxxx> --- drivers/staging/iio/meter/Kconfig | 7 + drivers/staging/iio/meter/Makefile | 1 + drivers/staging/iio/meter/ade7754.c | 756 +++++++++++++++++++++++++++++++++++ drivers/staging/iio/meter/ade7754.h | 161 ++++++++ 4 files changed, 925 insertions(+), 0 deletions(-) create mode 100644 drivers/staging/iio/meter/ade7754.c create mode 100644 drivers/staging/iio/meter/ade7754.h diff --git a/drivers/staging/iio/meter/Kconfig b/drivers/staging/iio/meter/Kconfig index 0c09c39..19f20f4 100644 --- a/drivers/staging/iio/meter/Kconfig +++ b/drivers/staging/iio/meter/Kconfig @@ -9,3 +9,10 @@ config ADE7753 help Say yes here to build support for Analog Devices ADE7753 Single-Phase Multifunction Metering IC with di/dt Sensor Interface. + +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. diff --git a/drivers/staging/iio/meter/Makefile b/drivers/staging/iio/meter/Makefile index b4eac38..7f65b99 100644 --- a/drivers/staging/iio/meter/Makefile +++ b/drivers/staging/iio/meter/Makefile @@ -3,3 +3,4 @@ # obj-$(CONFIG_ADE7753) += ade7753.o +obj-$(CONFIG_ADE7754) += ade7754.o diff --git a/drivers/staging/iio/meter/ade7754.c b/drivers/staging/iio/meter/ade7754.c new file mode 100644 index 0000000..f50316f --- /dev/null +++ b/drivers/staging/iio/meter/ade7754.c @@ -0,0 +1,756 @@ +/* + * ADE7754 Polyphase Multifunction Energy Metering IC 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 "ade7754.h" + +static int ade7754_spi_write_reg_8(struct device *dev, + u8 reg_address, + u8 val) +{ + int ret; + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct ade7754_state *st = iio_dev_get_devdata(indio_dev); + + mutex_lock(&st->buf_lock); + st->tx[0] = ADE7754_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 ade7754_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 ade7754_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] = ADE7754_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 ade7754_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 ade7754_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] = ADE7754_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 ade7754_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 ade7754_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] = ADE7754_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 ade7754_spi_read_reg_24(struct device *dev, + u8 reg_address, + u32 *val) +{ + struct spi_message msg; + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct ade7754_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 = 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; + + 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 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; + long val; + + ret = strict_strtol(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; + long val; + + ret = strict_strtol(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; + ade7754_spi_read_reg_8(dev, + ADE7754_OPMODE, + &val); + val |= 1 << 6; /* Software Chip Reset */ + ret = ade7754_spi_write_reg_8(dev, + ADE7754_OPMODE, + val); + + return ret; +} + + +static ssize_t ade7754_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 ade7754_reset(dev); + } + return -1; +} + +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(S_IWUSR | S_IRUGO, + ade7754_read_8bit, + ade7754_write_8bit, + ADE7754_VPEAK); +static IIO_DEV_ATTR_IPEAK(S_IWUSR | S_IRUGO, + ade7754_read_8bit, + ade7754_write_8bit, + ADE7754_VPEAK); +static IIO_DEV_ATTR_APHCAL(S_IWUSR | S_IRUGO, + ade7754_read_8bit, + ade7754_write_8bit, + ADE7754_APHCAL); +static IIO_DEV_ATTR_BPHCAL(S_IWUSR | S_IRUGO, + ade7754_read_8bit, + ade7754_write_8bit, + ADE7754_BPHCAL); +static IIO_DEV_ATTR_CPHCAL(S_IWUSR | S_IRUGO, + ade7754_read_8bit, + ade7754_write_8bit, + ADE7754_CPHCAL); +static IIO_DEV_ATTR_AAPOS(S_IWUSR | S_IRUGO, + ade7754_read_16bit, + ade7754_write_16bit, + ADE7754_AAPOS); +static IIO_DEV_ATTR_BAPOS(S_IWUSR | S_IRUGO, + ade7754_read_16bit, + ade7754_write_16bit, + ADE7754_BAPOS); +static IIO_DEV_ATTR_CAPOS(S_IWUSR | S_IRUGO, + ade7754_read_16bit, + ade7754_write_16bit, + ADE7754_CAPOS); +static IIO_DEV_ATTR_WDIV(S_IWUSR | S_IRUGO, + ade7754_read_8bit, + ade7754_write_8bit, + ADE7754_WDIV); +static IIO_DEV_ATTR_VADIV(S_IWUSR | S_IRUGO, + ade7754_read_8bit, + ade7754_write_8bit, + ADE7754_VADIV); +static IIO_DEV_ATTR_CFNUM(S_IWUSR | S_IRUGO, + ade7754_read_16bit, + ade7754_write_16bit, + ADE7754_CFNUM); +static IIO_DEV_ATTR_CFDEN(S_IWUSR | S_IRUGO, + ade7754_read_16bit, + ade7754_write_16bit, + ADE7754_CFDEN); +static IIO_DEV_ATTR_ACTIVE_POWER_A_GAIN(S_IWUSR | S_IRUGO, + ade7754_read_16bit, + ade7754_write_16bit, + ADE7754_AAPGAIN); +static IIO_DEV_ATTR_ACTIVE_POWER_B_GAIN(S_IWUSR | S_IRUGO, + ade7754_read_16bit, + ade7754_write_16bit, + ADE7754_BAPGAIN); +static IIO_DEV_ATTR_ACTIVE_POWER_C_GAIN(S_IWUSR | S_IRUGO, + ade7754_read_16bit, + ade7754_write_16bit, + ADE7754_CAPGAIN); +static IIO_DEV_ATTR_AIRMS(S_IRUGO, + ade7754_read_24bit, + NULL, + ADE7754_AIRMS); +static IIO_DEV_ATTR_BIRMS(S_IRUGO, + ade7754_read_24bit, + NULL, + ADE7754_BIRMS); +static IIO_DEV_ATTR_CIRMS(S_IRUGO, + ade7754_read_24bit, + NULL, + ADE7754_CIRMS); +static IIO_DEV_ATTR_AVRMS(S_IRUGO, + ade7754_read_24bit, + NULL, + ADE7754_AVRMS); +static IIO_DEV_ATTR_BVRMS(S_IRUGO, + ade7754_read_24bit, + NULL, + ADE7754_BVRMS); +static IIO_DEV_ATTR_CVRMS(S_IRUGO, + ade7754_read_24bit, + NULL, + ADE7754_CVRMS); +static IIO_DEV_ATTR_AIRMSOS(S_IRUGO, + ade7754_read_16bit, + ade7754_write_16bit, + ADE7754_AIRMSOS); +static IIO_DEV_ATTR_BIRMSOS(S_IRUGO, + ade7754_read_16bit, + ade7754_write_16bit, + ADE7754_BIRMSOS); +static IIO_DEV_ATTR_CIRMSOS(S_IRUGO, + ade7754_read_16bit, + ade7754_write_16bit, + ADE7754_CIRMSOS); +static IIO_DEV_ATTR_AVRMSOS(S_IRUGO, + ade7754_read_16bit, + ade7754_write_16bit, + ADE7754_AVRMSOS); +static IIO_DEV_ATTR_BVRMSOS(S_IRUGO, + ade7754_read_16bit, + ade7754_write_16bit, + ADE7754_BVRMSOS); +static IIO_DEV_ATTR_CVRMSOS(S_IRUGO, + 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) + goto error_ret; + + if (enable) + irqen |= 1 << 14; /* Enables an interrupt when a data is + present in the waveform register */ + else + irqen &= ~(1 << 14); + + ret = ade7754_spi_write_reg_16(dev, ADE7754_IRQEN, irqen); + if (ret) + goto error_ret; + +error_ret: + return ret; +} + +/* Power down the device */ +static int ade7754_stop_device(struct device *dev) +{ + int ret; + u8 val; + ade7754_spi_read_reg_8(dev, + ADE7754_OPMODE, + &val); + val |= 7 << 3; /* ADE7754 powered down */ + ret = ade7754_spi_write_reg_8(dev, + ADE7754_OPMODE, + val); + + return ret; +} + +static int ade7754_initial_setup(struct ade7754_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 = ade7754_set_irq(dev, false); + if (ret) { + dev_err(dev, "disable irq failed"); + goto err_ret; + } + + ade7754_reset(dev); + msleep(ADE7754_STARTUP_DELAY); + +err_ret: + return ret; +} + +static ssize_t ade7754_read_frequency(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + int ret, len = 0; + 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); + + len = sprintf(buf, "%d SPS\n", sps); + return len; +} + +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_get_drvdata(dev); + struct ade7754_state *st = iio_dev_get_devdata(indio_dev); + unsigned long val; + int ret; + u8 reg, t; + + ret = strict_strtol(buf, 10, &val); + if (ret) + return ret; + + mutex_lock(&indio_dev->mlock); + + 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, + ®); + if (ret) + goto out; + + reg &= ~(3 << 3); + reg |= t << 3; + + ret = ade7754_spi_write_reg_8(dev, + ADE7754_WAVMODE, + reg); + +out: + mutex_unlock(&indio_dev->mlock); + + return ret ? ret : len; +} +static IIO_DEV_ATTR_TEMP(ade7754_read_8bit); +static IIO_CONST_ATTR(temp_offset, "129 C"); +static IIO_CONST_ATTR(temp_scale, "4 C"); + +static IIO_DEV_ATTR_SAMP_FREQ(S_IWUSR | S_IRUGO, + ade7754_read_frequency, + ade7754_write_frequency); + +static IIO_DEV_ATTR_RESET(ade7754_write_reset); + +static IIO_CONST_ATTR_AVAIL_SAMP_FREQ("26000 13000 65000 33000"); + +static IIO_CONST_ATTR(name, "ade7754"); + +static struct attribute *ade7754_event_attributes[] = { + NULL +}; + +static struct attribute_group ade7754_event_attribute_group = { + .attrs = ade7754_event_attributes, +}; + +static struct attribute *ade7754_attributes[] = { + &iio_dev_attr_temp.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_available_sampling_frequency.dev_attr.attr, + &iio_dev_attr_reset.dev_attr.attr, + &iio_const_attr_name.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 int __devinit ade7754_probe(struct spi_device *spi) +{ + int ret, regdone = 0; + struct ade7754_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)*ADE7754_MAX_RX, GFP_KERNEL); + if (st->rx == NULL) { + ret = -ENOMEM; + goto error_free_st; + } + st->tx = kzalloc(sizeof(*st->tx)*ADE7754_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 = &ade7754_event_attribute_group; + st->indio_dev->attrs = &ade7754_attribute_group; + st->indio_dev->dev_data = (void *)(st); + st->indio_dev->driver_module = THIS_MODULE; + st->indio_dev->modes = INDIO_DIRECT_MODE; + + ret = ade7754_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 = ade7754_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, + "ade7754"); + if (ret) + goto error_uninitialize_ring; + + ret = ade7754_probe_trigger(st->indio_dev); + if (ret) + goto error_unregister_line; + } + + /* Get the device into a sane initial state */ + ret = ade7754_initial_setup(st); + if (ret) + goto error_remove_trigger; + return 0; + +error_remove_trigger: + if (st->indio_dev->modes & INDIO_RING_TRIGGERED) + ade7754_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: + ade7754_uninitialize_ring(st->indio_dev->ring); +error_unreg_ring_funcs: + ade7754_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 ade7754_remove(struct spi_device *spi) +{ + int ret; + struct ade7754_state *st = spi_get_drvdata(spi); + struct iio_dev *indio_dev = st->indio_dev; + + ret = ade7754_stop_device(&(indio_dev->dev)); + if (ret) + goto err_ret; + + flush_scheduled_work(); + + ade7754_remove_trigger(indio_dev); + if (spi->irq) + iio_unregister_interrupt_line(indio_dev, 0); + + ade7754_uninitialize_ring(indio_dev->ring); + ade7754_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 ade7754_driver = { + .driver = { + .name = "ade7754", + .owner = THIS_MODULE, + }, + .probe = ade7754_probe, + .remove = __devexit_p(ade7754_remove), +}; + +static __init int ade7754_init(void) +{ + return spi_register_driver(&ade7754_driver); +} +module_init(ade7754_init); + +static __exit void ade7754_exit(void) +{ + spi_unregister_driver(&ade7754_driver); +} +module_exit(ade7754_exit); + +MODULE_AUTHOR("Barry Song <21cnbao@xxxxxxxxx>"); +MODULE_DESCRIPTION("Analog Devices ADE7754 Polyphase Multifunction Energy Metering IC Driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/staging/iio/meter/ade7754.h b/drivers/staging/iio/meter/ade7754.h new file mode 100644 index 0000000..182375b --- /dev/null +++ b/drivers/staging/iio/meter/ade7754.h @@ -0,0 +1,161 @@ +#ifndef _ADE7754_H +#define _ADE7754_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 1 + +#define ADE7754_SPI_SLOW (u32)(300 * 1000) +#define ADE7754_SPI_BURST (u32)(1000 * 1000) +#define ADE7754_SPI_FAST (u32)(2000 * 1000) + +#define DRIVER_NAME "ade7754" + +/** + * struct ade7754_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 ade7754_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; +}; +#ifdef CONFIG_IIO_RING_BUFFER +/* At the moment triggers are only used for ring buffer + * filling. This may change! + */ + +enum ade7754_scan { + ADE7754_SCAN_PHA_V, + ADE7754_SCAN_PHB_V, + ADE7754_SCAN_PHC_V, + ADE7754_SCAN_PHA_I, + ADE7754_SCAN_PHB_I, + ADE7754_SCAN_PHC_I, +}; + +void ade7754_remove_trigger(struct iio_dev *indio_dev); +int ade7754_probe_trigger(struct iio_dev *indio_dev); + +ssize_t ade7754_read_data_from_ring(struct device *dev, + struct device_attribute *attr, + char *buf); + + +int ade7754_configure_ring(struct iio_dev *indio_dev); +void ade7754_unconfigure_ring(struct iio_dev *indio_dev); + +int ade7754_initialize_ring(struct iio_ring_buffer *ring); +void ade7754_uninitialize_ring(struct iio_ring_buffer *ring); +#else /* CONFIG_IIO_RING_BUFFER */ + +static inline void ade7754_remove_trigger(struct iio_dev *indio_dev) +{ +} +static inline int ade7754_probe_trigger(struct iio_dev *indio_dev) +{ + return 0; +} + +static inline ssize_t +ade7754_read_data_from_ring(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + return 0; +} + +static int ade7754_configure_ring(struct iio_dev *indio_dev) +{ + return 0; +} +static inline void ade7754_unconfigure_ring(struct iio_dev *indio_dev) +{ +} +static inline int ade7754_initialize_ring(struct iio_ring_buffer *ring) +{ + return 0; +} +static inline void ade7754_uninitialize_ring(struct iio_ring_buffer *ring) +{ +} +#endif /* CONFIG_IIO_RING_BUFFER */ + +#endif -- 1.7.3.2 -- 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