diff options
Diffstat (limited to 'drivers/staging/iio/adc/adt7310.c')
| -rw-r--r-- | drivers/staging/iio/adc/adt7310.c | 881 |
1 files changed, 0 insertions, 881 deletions
diff --git a/drivers/staging/iio/adc/adt7310.c b/drivers/staging/iio/adc/adt7310.c deleted file mode 100644 index 72460b6dc2f4..000000000000 --- a/drivers/staging/iio/adc/adt7310.c +++ /dev/null @@ -1,881 +0,0 @@ -/* - * ADT7310 digital temperature sensor driver supporting ADT7310 - * - * Copyright 2010 Analog Devices Inc. - * - * Licensed under the GPL-2 or later. - */ - -#include <linux/interrupt.h> -#include <linux/device.h> -#include <linux/kernel.h> -#include <linux/slab.h> -#include <linux/sysfs.h> -#include <linux/list.h> -#include <linux/spi/spi.h> -#include <linux/module.h> - -#include <linux/iio/iio.h> -#include <linux/iio/sysfs.h> -#include <linux/iio/events.h> -/* - * ADT7310 registers definition - */ - -#define ADT7310_STATUS 0 -#define ADT7310_CONFIG 1 -#define ADT7310_TEMPERATURE 2 -#define ADT7310_ID 3 -#define ADT7310_T_CRIT 4 -#define ADT7310_T_HYST 5 -#define ADT7310_T_ALARM_HIGH 6 -#define ADT7310_T_ALARM_LOW 7 - -/* - * ADT7310 status - */ -#define ADT7310_STAT_T_LOW 0x10 -#define ADT7310_STAT_T_HIGH 0x20 -#define ADT7310_STAT_T_CRIT 0x40 -#define ADT7310_STAT_NOT_RDY 0x80 - -/* - * ADT7310 config - */ -#define ADT7310_FAULT_QUEUE_MASK 0x3 -#define ADT7310_CT_POLARITY 0x4 -#define ADT7310_INT_POLARITY 0x8 -#define ADT7310_EVENT_MODE 0x10 -#define ADT7310_MODE_MASK 0x60 -#define ADT7310_ONESHOT 0x20 -#define ADT7310_SPS 0x40 -#define ADT7310_PD 0x60 -#define ADT7310_RESOLUTION 0x80 - -/* - * ADT7310 masks - */ -#define ADT7310_T16_VALUE_SIGN 0x8000 -#define ADT7310_T16_VALUE_FLOAT_OFFSET 7 -#define ADT7310_T16_VALUE_FLOAT_MASK 0x7F -#define ADT7310_T13_VALUE_SIGN 0x1000 -#define ADT7310_T13_VALUE_OFFSET 3 -#define ADT7310_T13_VALUE_FLOAT_OFFSET 4 -#define ADT7310_T13_VALUE_FLOAT_MASK 0xF -#define ADT7310_T_HYST_MASK 0xF -#define ADT7310_DEVICE_ID_MASK 0x7 -#define ADT7310_MANUFACTORY_ID_MASK 0xF8 -#define ADT7310_MANUFACTORY_ID_OFFSET 3 - - -#define ADT7310_CMD_REG_MASK 0x28 -#define ADT7310_CMD_REG_OFFSET 3 -#define ADT7310_CMD_READ 0x40 -#define ADT7310_CMD_CON_READ 0x4 - -#define ADT7310_IRQS 2 - -/* - * struct adt7310_chip_info - chip specifc information - */ - -struct adt7310_chip_info { - struct spi_device *spi_dev; - u8 config; -}; - -/* - * adt7310 register access by SPI - */ - -static int adt7310_spi_read_word(struct adt7310_chip_info *chip, u8 reg, u16 *data) -{ - struct spi_device *spi_dev = chip->spi_dev; - u8 command = (reg << ADT7310_CMD_REG_OFFSET) & ADT7310_CMD_REG_MASK; - int ret = 0; - - command |= ADT7310_CMD_READ; - ret = spi_write(spi_dev, &command, sizeof(command)); - if (ret < 0) { - dev_err(&spi_dev->dev, "SPI write command error\n"); - return ret; - } - - ret = spi_read(spi_dev, (u8 *)data, sizeof(*data)); - if (ret < 0) { - dev_err(&spi_dev->dev, "SPI read word error\n"); - return ret; - } - - *data = be16_to_cpu(*data); - - return 0; -} - -static int adt7310_spi_write_word(struct adt7310_chip_info *chip, u8 reg, u16 data) -{ - struct spi_device *spi_dev = chip->spi_dev; - u8 buf[3]; - int ret = 0; - - buf[0] = (reg << ADT7310_CMD_REG_OFFSET) & ADT7310_CMD_REG_MASK; - buf[1] = (u8)(data >> 8); - buf[2] = (u8)(data & 0xFF); - - ret = spi_write(spi_dev, buf, 3); - if (ret < 0) { - dev_err(&spi_dev->dev, "SPI write word error\n"); - return ret; - } - - return ret; -} - -static int adt7310_spi_read_byte(struct adt7310_chip_info *chip, u8 reg, u8 *data) -{ - struct spi_device *spi_dev = chip->spi_dev; - u8 command = (reg << ADT7310_CMD_REG_OFFSET) & ADT7310_CMD_REG_MASK; - int ret = 0; - - command |= ADT7310_CMD_READ; - ret = spi_write(spi_dev, &command, sizeof(command)); - if (ret < 0) { - dev_err(&spi_dev->dev, "SPI write command error\n"); - return ret; - } - - ret = spi_read(spi_dev, data, sizeof(*data)); - if (ret < 0) { - dev_err(&spi_dev->dev, "SPI read byte error\n"); - return ret; - } - - return 0; -} - -static int adt7310_spi_write_byte(struct adt7310_chip_info *chip, u8 reg, u8 data) -{ - struct spi_device *spi_dev = chip->spi_dev; - u8 buf[2]; - int ret = 0; - - buf[0] = (reg << ADT7310_CMD_REG_OFFSET) & ADT7310_CMD_REG_MASK; - buf[1] = data; - - ret = spi_write(spi_dev, buf, 2); - if (ret < 0) { - dev_err(&spi_dev->dev, "SPI write byte error\n"); - return ret; - } - - return ret; -} - -static ssize_t adt7310_show_mode(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct iio_dev *dev_info = dev_to_iio_dev(dev); - struct adt7310_chip_info *chip = iio_priv(dev_info); - u8 config; - - config = chip->config & ADT7310_MODE_MASK; - - switch (config) { - case ADT7310_PD: - return sprintf(buf, "power-down\n"); - case ADT7310_ONESHOT: - return sprintf(buf, "one-shot\n"); - case ADT7310_SPS: - return sprintf(buf, "sps\n"); - default: - return sprintf(buf, "full\n"); - } -} - -static ssize_t adt7310_store_mode(struct device *dev, - struct device_attribute *attr, - const char *buf, - size_t len) -{ - struct iio_dev *dev_info = dev_to_iio_dev(dev); - struct adt7310_chip_info *chip = iio_priv(dev_info); - u16 config; - int ret; - - ret = adt7310_spi_read_byte(chip, ADT7310_CONFIG, &chip->config); - if (ret) - return -EIO; - - config = chip->config & (~ADT7310_MODE_MASK); - if (strcmp(buf, "power-down")) - config |= ADT7310_PD; - else if (strcmp(buf, "one-shot")) - config |= ADT7310_ONESHOT; - else if (strcmp(buf, "sps")) - config |= ADT7310_SPS; - - ret = adt7310_spi_write_byte(chip, ADT7310_CONFIG, config); - if (ret) - return -EIO; - - chip->config = config; - - return len; -} - -static IIO_DEVICE_ATTR(mode, S_IRUGO | S_IWUSR, - adt7310_show_mode, - adt7310_store_mode, - 0); - -static ssize_t adt7310_show_available_modes(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - return sprintf(buf, "full\none-shot\nsps\npower-down\n"); -} - -static IIO_DEVICE_ATTR(available_modes, S_IRUGO, adt7310_show_available_modes, NULL, 0); - -static ssize_t adt7310_show_resolution(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct iio_dev *dev_info = dev_to_iio_dev(dev); - struct adt7310_chip_info *chip = iio_priv(dev_info); - int ret; - int bits; - - ret = adt7310_spi_read_byte(chip, ADT7310_CONFIG, &chip->config); - if (ret) - return -EIO; - - if (chip->config & ADT7310_RESOLUTION) - bits = 16; - else - bits = 13; - - return sprintf(buf, "%d bits\n", bits); -} - -static ssize_t adt7310_store_resolution(struct device *dev, - struct device_attribute *attr, - const char *buf, - size_t len) -{ - struct iio_dev *dev_info = dev_to_iio_dev(dev); - struct adt7310_chip_info *chip = iio_priv(dev_info); - unsigned long data; - u16 config; - int ret; - - ret = strict_strtoul(buf, 10, &data); - if (ret) - return -EINVAL; - - ret = adt7310_spi_read_byte(chip, ADT7310_CONFIG, &chip->config); - if (ret) - return -EIO; - - config = chip->config & (~ADT7310_RESOLUTION); - if (data) - config |= ADT7310_RESOLUTION; - - ret = adt7310_spi_write_byte(chip, ADT7310_CONFIG, config); - if (ret) - return -EIO; - - chip->config = config; - - return len; -} - -static IIO_DEVICE_ATTR(resolution, S_IRUGO | S_IWUSR, - adt7310_show_resolution, - adt7310_store_resolution, - 0); - -static ssize_t adt7310_show_id(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct iio_dev *dev_info = dev_to_iio_dev(dev); - struct adt7310_chip_info *chip = iio_priv(dev_info); - u8 id; - int ret; - - ret = adt7310_spi_read_byte(chip, ADT7310_ID, &id); - if (ret) - return -EIO; - - return sprintf(buf, "device id: 0x%x\nmanufactory id: 0x%x\n", - id & ADT7310_DEVICE_ID_MASK, - (id & ADT7310_MANUFACTORY_ID_MASK) >> ADT7310_MANUFACTORY_ID_OFFSET); -} - -static IIO_DEVICE_ATTR(id, S_IRUGO | S_IWUSR, - adt7310_show_id, - NULL, - 0); - -static ssize_t adt7310_convert_temperature(struct adt7310_chip_info *chip, - u16 data, char *buf) -{ - char sign = ' '; - - if (chip->config & ADT7310_RESOLUTION) { - if (data & ADT7310_T16_VALUE_SIGN) { - /* convert supplement to positive value */ - data = (u16)((ADT7310_T16_VALUE_SIGN << 1) - (u32)data); - sign = '-'; - } - return sprintf(buf, "%c%d.%.7d\n", sign, - (data >> ADT7310_T16_VALUE_FLOAT_OFFSET), - (data & ADT7310_T16_VALUE_FLOAT_MASK) * 78125); - } else { - if (data & ADT7310_T13_VALUE_SIGN) { - /* convert supplement to positive value */ - data >>= ADT7310_T13_VALUE_OFFSET; - data = (ADT7310_T13_VALUE_SIGN << 1) - data; - sign = '-'; - } - return sprintf(buf, "%c%d.%.4d\n", sign, - (data >> ADT7310_T13_VALUE_FLOAT_OFFSET), - (data & ADT7310_T13_VALUE_FLOAT_MASK) * 625); - } -} - -static ssize_t adt7310_show_value(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct iio_dev *dev_info = dev_to_iio_dev(dev); - struct adt7310_chip_info *chip = iio_priv(dev_info); - u8 status; - u16 data; - int ret, i = 0; - - do { - ret = adt7310_spi_read_byte(chip, ADT7310_STATUS, &status); - if (ret) - return -EIO; - i++; - if (i == 10000) - return -EIO; - } while (status & ADT7310_STAT_NOT_RDY); - - ret = adt7310_spi_read_word(chip, ADT7310_TEMPERATURE, &data); - if (ret) - return -EIO; - - return adt7310_convert_temperature(chip, data, buf); -} - -static IIO_DEVICE_ATTR(value, S_IRUGO, adt7310_show_value, NULL, 0); - -static struct attribute *adt7310_attributes[] = { - &iio_dev_attr_available_modes.dev_attr.attr, - &iio_dev_attr_mode.dev_attr.attr, - &iio_dev_attr_resolution.dev_attr.attr, - &iio_dev_attr_id.dev_attr.attr, - &iio_dev_attr_value.dev_attr.attr, - NULL, -}; - -static const struct attribute_group adt7310_attribute_group = { - .attrs = adt7310_attributes, -}; - -static irqreturn_t adt7310_event_handler(int irq, void *private) -{ - struct iio_dev *indio_dev = private; - struct adt7310_chip_info *chip = iio_priv(indio_dev); - s64 timestamp = iio_get_time_ns(); - u8 status; - int ret; - - ret = adt7310_spi_read_byte(chip, ADT7310_STATUS, &status); - if (ret) - goto done; - - if (status & ADT7310_STAT_T_HIGH) - iio_push_event(indio_dev, - IIO_UNMOD_EVENT_CODE(IIO_TEMP, 0, - IIO_EV_TYPE_THRESH, - IIO_EV_DIR_RISING), - timestamp); - if (status & ADT7310_STAT_T_LOW) - iio_push_event(indio_dev, - IIO_UNMOD_EVENT_CODE(IIO_TEMP, 0, - IIO_EV_TYPE_THRESH, - IIO_EV_DIR_FALLING), - timestamp); - if (status & ADT7310_STAT_T_CRIT) - iio_push_event(indio_dev, - IIO_UNMOD_EVENT_CODE(IIO_TEMP, 0, - IIO_EV_TYPE_THRESH, - IIO_EV_DIR_RISING), - timestamp); - -done: - return IRQ_HANDLED; -} - -static ssize_t adt7310_show_event_mode(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct iio_dev *dev_info = dev_to_iio_dev(dev); - struct adt7310_chip_info *chip = iio_priv(dev_info); - int ret; - - ret = adt7310_spi_read_byte(chip, ADT7310_CONFIG, &chip->config); - if (ret) - return -EIO; - - if (chip->config & ADT7310_EVENT_MODE) - return sprintf(buf, "interrupt\n"); - else - return sprintf(buf, "comparator\n"); -} - -static ssize_t adt7310_set_event_mode(struct device *dev, - struct device_attribute *attr, - const char *buf, - size_t len) -{ - struct iio_dev *dev_info = dev_to_iio_dev(dev); - struct adt7310_chip_info *chip = iio_priv(dev_info); - u16 config; - int ret; - - ret = adt7310_spi_read_byte(chip, ADT7310_CONFIG, &chip->config); - if (ret) - return -EIO; - - config = chip->config &= ~ADT7310_EVENT_MODE; - if (strcmp(buf, "comparator") != 0) - config |= ADT7310_EVENT_MODE; - - ret = adt7310_spi_write_byte(chip, ADT7310_CONFIG, config); - if (ret) - return -EIO; - - chip->config = config; - - return len; -} - -static ssize_t adt7310_show_available_event_modes(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - return sprintf(buf, "comparator\ninterrupt\n"); -} - -static ssize_t adt7310_show_fault_queue(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct iio_dev *dev_info = dev_to_iio_dev(dev); - struct adt7310_chip_info *chip = iio_priv(dev_info); - int ret; - - ret = adt7310_spi_read_byte(chip, ADT7310_CONFIG, &chip->config); - if (ret) - return -EIO; - - return sprintf(buf, "%d\n", chip->config & ADT7310_FAULT_QUEUE_MASK); -} - -static ssize_t adt7310_set_fault_queue(struct device *dev, - struct device_attribute *attr, - const char *buf, - size_t len) -{ - struct iio_dev *dev_info = dev_to_iio_dev(dev); - struct adt7310_chip_info *chip = iio_priv(dev_info); - unsigned long data; - int ret; - u8 config; - - ret = strict_strtoul(buf, 10, &data); - if (ret || data > 3) - return -EINVAL; - - ret = adt7310_spi_read_byte(chip, ADT7310_CONFIG, &chip->config); - if (ret) - return -EIO; - - config = chip->config & ~ADT7310_FAULT_QUEUE_MASK; - config |= data; - ret = adt7310_spi_write_byte(chip, ADT7310_CONFIG, config); - if (ret) - return -EIO; - - chip->config = config; - - return len; -} - -static inline ssize_t adt7310_show_t_bound(struct device *dev, - struct device_attribute *attr, - u8 bound_reg, - char *buf) -{ - struct iio_dev *dev_info = dev_to_iio_dev(dev); - struct adt7310_chip_info *chip = iio_priv(dev_info); - u16 data; - int ret; - - ret = adt7310_spi_read_word(chip, bound_reg, &data); - if (ret) - return -EIO; - - return adt7310_convert_temperature(chip, data, buf); -} - -static inline ssize_t adt7310_set_t_bound(struct device *dev, - struct device_attribute *attr, - u8 bound_reg, - const char *buf, - size_t len) -{ - struct iio_dev *dev_info = dev_to_iio_dev(dev); - struct adt7310_chip_info *chip = iio_priv(dev_info); - long tmp1, tmp2; - u16 data; - char *pos; - int ret; - - pos = strchr(buf, '.'); - - ret = strict_strtol(buf, 10, &tmp1); - - if (ret || tmp1 > 127 || tmp1 < -128) - return -EINVAL; - - if (pos) { - len = strlen(pos); - - if (chip->config & ADT7310_RESOLUTION) { - if (len > ADT7310_T16_VALUE_FLOAT_OFFSET) - len = ADT7310_T16_VALUE_FLOAT_OFFSET; - pos[len] = 0; - ret = strict_strtol(pos, 10, &tmp2); - - if (!ret) - tmp2 = (tmp2 / 78125) * 78125; - } else { - if (len > ADT7310_T13_VALUE_FLOAT_OFFSET) - len = ADT7310_T13_VALUE_FLOAT_OFFSET; - pos[len] = 0; - ret = strict_strtol(pos, 10, &tmp2); - - if (!ret) - tmp2 = (tmp2 / 625) * 625; - } - } - - if (tmp1 < 0) - data = (u16)(-tmp1); - else - data = (u16)tmp1; - - if (chip->config & ADT7310_RESOLUTION) { - data = (data << ADT7310_T16_VALUE_FLOAT_OFFSET) | - (tmp2 & ADT7310_T16_VALUE_FLOAT_MASK); - - if (tmp1 < 0) - /* convert positive value to supplyment */ - data = (u16)((ADT7310_T16_VALUE_SIGN << 1) - (u32)data); - } else { - data = (data << ADT7310_T13_VALUE_FLOAT_OFFSET) | - (tmp2 & ADT7310_T13_VALUE_FLOAT_MASK); - - if (tmp1 < 0) - /* convert positive value to supplyment */ - data = (ADT7310_T13_VALUE_SIGN << 1) - data; - data <<= ADT7310_T13_VALUE_OFFSET; - } - - ret = adt7310_spi_write_word(chip, bound_reg, data); - if (ret) - return -EIO; - - return len; -} - -static ssize_t adt7310_show_t_alarm_high(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - return adt7310_show_t_bound(dev, attr, - ADT7310_T_ALARM_HIGH, buf); -} - -static inline ssize_t adt7310_set_t_alarm_high(struct device *dev, - struct device_attribute *attr, - const char *buf, - size_t len) -{ - return adt7310_set_t_bound(dev, attr, - ADT7310_T_ALARM_HIGH, buf, len); -} - -static ssize_t adt7310_show_t_alarm_low(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - return adt7310_show_t_bound(dev, attr, - ADT7310_T_ALARM_LOW, buf); -} - -static inline ssize_t adt7310_set_t_alarm_low(struct device *dev, - struct device_attribute *attr, - const char *buf, - size_t len) -{ - return adt7310_set_t_bound(dev, attr, - ADT7310_T_ALARM_LOW, buf, len); -} - -static ssize_t adt7310_show_t_crit(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - return adt7310_show_t_bound(dev, attr, - ADT7310_T_CRIT, buf); -} - -static inline ssize_t adt7310_set_t_crit(struct device *dev, - struct device_attribute *attr, - const char *buf, - size_t len) -{ - return adt7310_set_t_bound(dev, attr, - ADT7310_T_CRIT, buf, len); -} - -static ssize_t adt7310_show_t_hyst(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct iio_dev *dev_info = dev_to_iio_dev(dev); - struct adt7310_chip_info *chip = iio_priv(dev_info); - int ret; - u8 t_hyst; - - ret = adt7310_spi_read_byte(chip, ADT7310_T_HYST, &t_hyst); - if (ret) - return -EIO; - - return sprintf(buf, "%d\n", t_hyst & ADT7310_T_HYST_MASK); -} - -static inline ssize_t adt7310_set_t_hyst(struct device *dev, - struct device_attribute *attr, - const char *buf, - size_t len) -{ - struct iio_dev *dev_info = dev_to_iio_dev(dev); - struct adt7310_chip_info *chip = iio_priv(dev_info); - int ret; - unsigned long data; - u8 t_hyst; - - ret = strict_strtol(buf, 10, &data); - - if (ret || data > ADT7310_T_HYST_MASK) - return -EINVAL; - - t_hyst = (u8)data; - - ret = adt7310_spi_write_byte(chip, ADT7310_T_HYST, t_hyst); - if (ret) - return -EIO; - - return len; -} - -static IIO_DEVICE_ATTR(event_mode, - S_IRUGO | S_IWUSR, - adt7310_show_event_mode, adt7310_set_event_mode, 0); -static IIO_DEVICE_ATTR(available_event_modes, - S_IRUGO | S_IWUSR, - adt7310_show_available_event_modes, NULL, 0); -static IIO_DEVICE_ATTR(fault_queue, - S_IRUGO | S_IWUSR, - adt7310_show_fault_queue, adt7310_set_fault_queue, 0); -static IIO_DEVICE_ATTR(t_alarm_high, - S_IRUGO | S_IWUSR, - adt7310_show_t_alarm_high, adt7310_set_t_alarm_high, 0); -static IIO_DEVICE_ATTR(t_alarm_low, - S_IRUGO | S_IWUSR, - adt7310_show_t_alarm_low, adt7310_set_t_alarm_low, 0); -static IIO_DEVICE_ATTR(t_crit, - S_IRUGO | S_IWUSR, - adt7310_show_t_crit, adt7310_set_t_crit, 0); -static IIO_DEVICE_ATTR(t_hyst, - S_IRUGO | S_IWUSR, - adt7310_show_t_hyst, adt7310_set_t_hyst, 0); - -static struct attribute *adt7310_event_int_attributes[] = { - &iio_dev_attr_event_mode.dev_attr.attr, - &iio_dev_attr_available_event_modes.dev_attr.attr, - &iio_dev_attr_fault_queue.dev_attr.attr, - &iio_dev_attr_t_alarm_high.dev_attr.attr, - &iio_dev_attr_t_alarm_low.dev_attr.attr, - &iio_dev_attr_t_crit.dev_attr.attr, - &iio_dev_attr_t_hyst.dev_attr.attr, - NULL, -}; - -static struct attribute_group adt7310_event_attribute_group = { - .attrs = adt7310_event_int_attributes, - .name = "events", -}; - -static const struct iio_info adt7310_info = { - .attrs = &adt7310_attribute_group, - .event_attrs = &adt7310_event_attribute_group, - .driver_module = THIS_MODULE, -}; - -/* - * device probe and remove - */ - -static int __devinit adt7310_probe(struct spi_device *spi_dev) -{ - struct adt7310_chip_info *chip; - struct iio_dev *indio_dev; - int ret = 0; - unsigned long *adt7310_platform_data = spi_dev->dev.platform_data; - unsigned long irq_flags; - - indio_dev = iio_device_alloc(sizeof(*chip)); - if (indio_dev == NULL) { - ret = -ENOMEM; - goto error_ret; - } - chip = iio_priv(indio_dev); - /* this is only used for device removal purposes */ - dev_set_drvdata(&spi_dev->dev, indio_dev); - - chip->spi_dev = spi_dev; - - indio_dev->dev.parent = &spi_dev->dev; - indio_dev->name = spi_get_device_id(spi_dev)->name; - indio_dev->info = &adt7310_info; - indio_dev->modes = INDIO_DIRECT_MODE; - - /* CT critcal temperature event. line 0 */ - if (spi_dev->irq) { - if (adt7310_platform_data[2]) - irq_flags = adt7310_platform_data[2]; - else - irq_flags = IRQF_TRIGGER_LOW; - ret = request_threaded_irq(spi_dev->irq, - NULL, - &adt7310_event_handler, - irq_flags | IRQF_ONESHOT, - indio_dev->name, - indio_dev); - if (ret) - goto error_free_dev; - } - - /* INT bound temperature alarm event. line 1 */ - if (adt7310_platform_data[0]) { - ret = request_threaded_irq(adt7310_platform_data[0], - NULL, - &adt7310_event_handler, - adt7310_platform_data[1] | - IRQF_ONESHOT, - indio_dev->name, - indio_dev); - if (ret) - goto error_unreg_ct_irq; - } - - if (spi_dev->irq && adt7310_platform_data[0]) { - ret = adt7310_spi_read_byte(chip, ADT7310_CONFIG, &chip->config); - if (ret) { - ret = -EIO; - goto error_unreg_int_irq; - } - - /* set irq polarity low level */ - chip->config &= ~ADT7310_CT_POLARITY; - - if (adt7310_platform_data[1] & IRQF_TRIGGER_HIGH) - chip->config |= ADT7310_INT_POLARITY; - else - chip->config &= ~ADT7310_INT_POLARITY; - - ret = adt7310_spi_write_byte(chip, ADT7310_CONFIG, chip->config); - if (ret) { - ret = -EIO; - goto error_unreg_int_irq; - } - } - - ret = iio_device_register(indio_dev); - if (ret) - goto error_unreg_int_irq; - - dev_info(&spi_dev->dev, "%s temperature sensor registered.\n", - indio_dev->name); - - return 0; - -error_unreg_int_irq: - free_irq(adt7310_platform_data[0], indio_dev); -error_unreg_ct_irq: - free_irq(spi_dev->irq, indio_dev); -error_free_dev: - iio_device_free(indio_dev); -error_ret: - return ret; -} - -static int __devexit adt7310_remove(struct spi_device *spi_dev) -{ - struct iio_dev *indio_dev = dev_get_drvdata(&spi_dev->dev); - unsigned long *adt7310_platform_data = spi_dev->dev.platform_data; - - iio_device_unregister(indio_dev); - dev_set_drvdata(&spi_dev->dev, NULL); - if (adt7310_platform_data[0]) - free_irq(adt7310_platform_data[0], indio_dev); - if (spi_dev->irq) - free_irq(spi_dev->irq, indio_dev); - iio_device_free(indio_dev); - - return 0; -} - -static const struct spi_device_id adt7310_id[] = { - { "adt7310", 0 }, - {} -}; - -MODULE_DEVICE_TABLE(spi, adt7310_id); - -static struct spi_driver adt7310_driver = { - .driver = { - .name = "adt7310", - .owner = THIS_MODULE, - }, - .probe = adt7310_probe, - .remove = __devexit_p(adt7310_remove), - .id_table = adt7310_id, -}; -module_spi_driver(adt7310_driver); - -MODULE_AUTHOR("Sonic Zhang <sonic.zhang@analog.com>"); -MODULE_DESCRIPTION("Analog Devices ADT7310 digital" - " temperature sensor driver"); -MODULE_LICENSE("GPL v2"); |