--- /dev/null
+/*
+ * ADT7316 digital temperature sensor driver supporting ADT7316/7/8 ADT7516/7/9
+ *
+ *
+ * Copyright 2010 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <linux/interrupt.h>
+#include <linux/gpio.h>
+#include <linux/workqueue.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/sysfs.h>
+#include <linux/list.h>
+#include <linux/i2c.h>
+#include <linux/rtc.h>
+
+#include "../iio.h"
+#include "../sysfs.h"
+#include "adt7316.h"
+
+/*
+ * ADT7316 registers definition
+ */
+#define ADT7316_INT_STAT1 0x0
+#define ADT7316_INT_STAT2 0x1
+#define ADT7316_LSB_IN_TEMP_VDD 0x3
+#define ADT7316_LSB_IN_TEMP_MASK 0x3
+#define ADT7316_LSB_VDD_MASK 0xC
+#define ADT7316_LSB_VDD_OFFSET 2
+#define ADT7316_LSB_EX_TEMP_AIN 0x4
+#define ADT7316_LSB_EX_TEMP_MASK 0x3
+#define ADT7516_LSB_AIN_SHIFT 2
+#define ADT7316_AD_MSB_DATA_BASE 0x6
+#define ADT7316_AD_MSB_DATA_REGS 3
+#define ADT7516_AD_MSB_DATA_REGS 6
+#define ADT7316_MSB_VDD 0x6
+#define ADT7316_MSB_IN_TEMP 0x7
+#define ADT7316_MSB_EX_TEMP 0x8
+#define ADT7516_MSB_AIN1 0x8
+#define ADT7516_MSB_AIN2 0x9
+#define ADT7516_MSB_AIN3 0xA
+#define ADT7516_MSB_AIN4 0xB
+#define ADT7316_DA_DATA_BASE 0x10
+#define ADT7316_DA_MSB_DATA_REGS 4
+#define ADT7316_LSB_DAC_A 0x10
+#define ADT7316_MSB_DAC_A 0x11
+#define ADT7316_LSB_DAC_B 0x12
+#define ADT7316_MSB_DAC_B 0x13
+#define ADT7316_LSB_DAC_C 0x14
+#define ADT7316_MSB_DAC_C 0x15
+#define ADT7316_LSB_DAC_D 0x16
+#define ADT7316_MSB_DAC_D 0x17
+#define ADT7316_CONFIG1 0x18
+#define ADT7316_CONFIG2 0x19
+#define ADT7316_CONFIG3 0x1A
+#define ADT7316_LDAC_CONFIG 0x1B
+#define ADT7316_DAC_CONFIG 0x1C
+#define ADT7316_INT_MASK1 0x1D
+#define ADT7316_INT_MASK2 0x1E
+#define ADT7316_IN_TEMP_OFFSET 0x1F
+#define ADT7316_EX_TEMP_OFFSET 0x20
+#define ADT7316_IN_ANALOG_TEMP_OFFSET 0x21
+#define ADT7316_EX_ANALOG_TEMP_OFFSET 0x22
+#define ADT7316_VDD_HIGH 0x23
+#define ADT7316_VDD_LOW 0x24
+#define ADT7316_IN_TEMP_HIGH 0x25
+#define ADT7316_IN_TEMP_LOW 0x26
+#define ADT7316_EX_TEMP_HIGH 0x27
+#define ADT7316_EX_TEMP_LOW 0x28
+#define ADT7516_AIN2_HIGH 0x2B
+#define ADT7516_AIN2_LOW 0x2C
+#define ADT7516_AIN3_HIGH 0x2D
+#define ADT7516_AIN3_LOW 0x2E
+#define ADT7516_AIN4_HIGH 0x2F
+#define ADT7516_AIN4_LOW 0x30
+#define ADT7316_DEVICE_ID 0x4D
+#define ADT7316_MANUFACTURE_ID 0x4E
+#define ADT7316_DEVICE_REV 0x4F
+#define ADT7316_SPI_LOCK_STAT 0x7F
+
+/*
+ * ADT7316 config1
+ */
+#define ADT7316_EN 0x1
+#define ADT7516_SEL_EX_TEMP 0x4
+#define ADT7516_SEL_AIN1_2_EX_TEMP_MASK 0x6
+#define ADT7516_SEL_AIN3 0x8
+#define ADT7316_INT_EN 0x20
+#define ADT7316_INT_POLARITY 0x40
+#define ADT7316_PD 0x80
+
+/*
+ * ADT7316 config2
+ */
+#define ADT7316_AD_SINGLE_CH_MASK 0x3
+#define ADT7516_AD_SINGLE_CH_MASK 0x7
+#define ADT7316_AD_SINGLE_CH_VDD 0
+#define ADT7316_AD_SINGLE_CH_IN 1
+#define ADT7316_AD_SINGLE_CH_EX 2
+#define ADT7516_AD_SINGLE_CH_AIN1 2
+#define ADT7516_AD_SINGLE_CH_AIN2 3
+#define ADT7516_AD_SINGLE_CH_AIN3 4
+#define ADT7516_AD_SINGLE_CH_AIN4 5
+#define ADT7316_AD_SINGLE_CH_MODE 0x10
+#define ADT7316_DISABLE_AVERAGING 0x20
+#define ADT7316_EN_SMBUS_TIMEOUT 0x40
+#define ADT7316_RESET 0x80
+
+/*
+ * ADT7316 config3
+ */
+#define ADT7316_ADCLK_22_5 0x1
+#define ADT7316_DA_HIGH_RESOLUTION 0x2
+#define ADT7316_DA_EN_VIA_DAC_LDCA 0x4
+#define ADT7516_AIN_IN_VREF 0x10
+#define ADT7316_EN_IN_TEMP_PROP_DACA 0x20
+#define ADT7316_EN_EX_TEMP_PROP_DACB 0x40
+
+/*
+ * ADT7316 DAC config
+ */
+#define ADT7316_DA_2VREF_CH_MASK 0xF
+#define ADT7316_DA_EN_MODE_MASK 0x30
+#define ADT7316_DA_EN_MODE_SINGLE 0x00
+#define ADT7316_DA_EN_MODE_AB_CD 0x10
+#define ADT7316_DA_EN_MODE_ABCD 0x20
+#define ADT7316_DA_EN_MODE_LDAC 0x30
+#define ADT7316_VREF_BYPASS_DAC_AB 0x40
+#define ADT7316_VREF_BYPASS_DAC_CD 0x80
+
+/*
+ * ADT7316 LDAC config
+ */
+#define ADT7316_LDAC_EN_DA_MASK 0xF
+#define ADT7316_DAC_IN_VREF 0x10
+#define ADT7516_DAC_AB_IN_VREF 0x10
+#define ADT7516_DAC_CD_IN_VREF 0x20
+#define ADT7516_DAC_IN_VREF_OFFSET 4
+#define ADT7516_DAC_IN_VREF_MASK 0x30
+
+/*
+ * ADT7316 INT_MASK2
+ */
+#define ADT7316_INT_MASK2_VDD 0x10
+
+/*
+ * ADT7316 value masks
+ */
+#define ADT7316_VALUE_MASK 0xfff
+#define ADT7316_T_VALUE_SIGN 0x400
+#define ADT7316_T_VALUE_FLOAT_OFFSET 2
+#define ADT7316_T_VALUE_FLOAT_MASK 0x2
+
+/*
+ * Chip ID
+ */
+#define ID_ADT7316 0x1
+#define ID_ADT7317 0x2
+#define ID_ADT7318 0x3
+#define ID_ADT7516 0x11
+#define ID_ADT7517 0x12
+#define ID_ADT7519 0x14
+
+#define ID_FAMILY_MASK 0xF0
+#define ID_ADT73XX 0x0
+#define ID_ADT75XX 0x10
+
+/*
+ * struct adt7316_chip_info - chip specifc information
+ */
+
+struct adt7316_chip_info {
+ const char *name;
+ struct iio_dev *indio_dev;
+ struct work_struct thresh_work;
+ s64 last_timestamp;
+ struct adt7316_bus bus;
+ u16 ldac_pin;
+ u16 int_mask; /* 0x2f */
+ u8 config1;
+ u8 config2;
+ u8 config3;
+ u8 dac_config; /* DAC config */
+ u8 ldac_config; /* LDAC config */
+ u8 dac_bits; /* 8, 10, 12 */
+ u8 id; /* chip id */
+};
+
+/*
+ * Logic interrupt mask for user application to enable
+ * interrupts.
+ */
+#define ADT7316_IN_TEMP_HIGH_INT_MASK 0x1
+#define ADT7316_IN_TEMP_LOW_INT_MASK 0x2
+#define ADT7316_EX_TEMP_HIGH_INT_MASK 0x4
+#define ADT7316_EX_TEMP_LOW_INT_MASK 0x8
+#define ADT7316_EX_TEMP_FAULT_INT_MASK 0x10
+#define ADT7516_AIN1_INT_MASK 0x4
+#define ADT7516_AIN2_INT_MASK 0x20
+#define ADT7516_AIN3_INT_MASK 0x40
+#define ADT7516_AIN4_INT_MASK 0x80
+#define ADT7316_VDD_INT_MASK 0x100
+#define ADT7316_TEMP_INT_MASK 0x1F
+#define ADT7516_AIN_INT_MASK 0xE0
+#define ADT7316_TEMP_AIN_INT_MASK \
+ (ADT7316_TEMP_INT_MASK | ADT7316_TEMP_INT_MASK)
+
+/*
+ * struct adt7316_chip_info - chip specifc information
+ */
+
+struct adt7316_limit_regs {
+ u16 data_high;
+ u16 data_low;
+};
+
+static ssize_t adt7316_show_enabled(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ return sprintf(buf, "%d\n", !!(chip->config1 & ADT7316_EN));
+}
+
+static ssize_t _adt7316_store_enabled(struct adt7316_chip_info *chip,
+ int enable)
+{
+ u8 config1;
+ int ret;
+
+ if (enable)
+ config1 = chip->config1 | ADT7316_EN;
+ else
+ config1 = chip->config1 & ~ADT7316_EN;
+
+ ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG1, config1);
+ if (ret)
+ return -EIO;
+
+ chip->config1 = config1;
+
+ return ret;
+
+}
+
+static ssize_t adt7316_store_enabled(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+ int enable;
+
+ if (!memcmp(buf, "1", 1))
+ enable = 1;
+ else
+ enable = 0;
+
+ if (_adt7316_store_enabled(chip, enable) < 0)
+ return -EIO;
+ else
+ return len;
+}
+
+static IIO_DEVICE_ATTR(enabled, S_IRUGO | S_IWUSR,
+ adt7316_show_enabled,
+ adt7316_store_enabled,
+ 0);
+
+static ssize_t adt7316_show_select_ex_temp(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ if ((chip->id & ID_FAMILY_MASK) != ID_ADT75XX)
+ return -EPERM;
+
+ return sprintf(buf, "%d\n", !!(chip->config1 & ADT7516_SEL_EX_TEMP));
+}
+
+static ssize_t adt7316_store_select_ex_temp(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+ u8 config1;
+ int ret;
+
+ if ((chip->id & ID_FAMILY_MASK) != ID_ADT75XX)
+ return -EPERM;
+
+ config1 = chip->config1 & (~ADT7516_SEL_EX_TEMP);
+ if (!memcmp(buf, "1", 1))
+ config1 |= ADT7516_SEL_EX_TEMP;
+
+ ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG1, config1);
+ if (ret)
+ return -EIO;
+
+ chip->config1 = config1;
+
+ return len;
+}
+
+static IIO_DEVICE_ATTR(select_ex_temp, S_IRUGO | S_IWUSR,
+ adt7316_show_select_ex_temp,
+ adt7316_store_select_ex_temp,
+ 0);
+
+static ssize_t adt7316_show_mode(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ if (chip->config2 & ADT7316_AD_SINGLE_CH_MODE)
+ return sprintf(buf, "single_channel\n");
+ else
+ return sprintf(buf, "round_robin\n");
+}
+
+static ssize_t adt7316_store_mode(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+ u8 config2;
+ int ret;
+
+ config2 = chip->config2 & (~ADT7316_AD_SINGLE_CH_MODE);
+ if (!memcmp(buf, "single_channel", 14))
+ config2 |= ADT7316_AD_SINGLE_CH_MODE;
+
+ ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG2, config2);
+ if (ret)
+ return -EIO;
+
+ chip->config2 = config2;
+
+ return len;
+}
+
+static IIO_DEVICE_ATTR(mode, S_IRUGO | S_IWUSR,
+ adt7316_show_mode,
+ adt7316_store_mode,
+ 0);
+
+static ssize_t adt7316_show_all_modes(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return sprintf(buf, "single_channel\nround_robin\n");
+}
+
+static IIO_DEVICE_ATTR(all_modes, S_IRUGO, adt7316_show_all_modes, NULL, 0);
+
+static ssize_t adt7316_show_ad_channel(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ if (!(chip->config2 & ADT7316_AD_SINGLE_CH_MODE))
+ return -EPERM;
+
+ switch (chip->config2 & ADT7516_AD_SINGLE_CH_MASK) {
+ case ADT7316_AD_SINGLE_CH_VDD:
+ return sprintf(buf, "0 - VDD\n");
+ case ADT7316_AD_SINGLE_CH_IN:
+ return sprintf(buf, "1 - Internal Temperature\n");
+ case ADT7316_AD_SINGLE_CH_EX:
+ if (((chip->id & ID_FAMILY_MASK) == ID_ADT75XX) &&
+ (chip->config1 & ADT7516_SEL_AIN1_2_EX_TEMP_MASK) == 0)
+ return sprintf(buf, "2 - AIN1\n");
+ else
+ return sprintf(buf, "2 - External Temperature\n");
+ case ADT7516_AD_SINGLE_CH_AIN2:
+ if ((chip->config1 & ADT7516_SEL_AIN1_2_EX_TEMP_MASK) == 0)
+ return sprintf(buf, "3 - AIN2\n");
+ else
+ return sprintf(buf, "N/A\n");
+ case ADT7516_AD_SINGLE_CH_AIN3:
+ if (chip->config1 & ADT7516_SEL_AIN3)
+ return sprintf(buf, "4 - AIN3\n");
+ else
+ return sprintf(buf, "N/A\n");
+ case ADT7516_AD_SINGLE_CH_AIN4:
+ return sprintf(buf, "5 - AIN4\n");
+ default:
+ return sprintf(buf, "N/A\n");
+ };
+}
+
+static ssize_t adt7316_store_ad_channel(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+ u8 config2;
+ unsigned long data = 0;
+ int ret;
+
+ if (!(chip->config2 & ADT7316_AD_SINGLE_CH_MODE))
+ return -EPERM;
+
+ ret = strict_strtoul(buf, 10, &data);
+ if (ret)
+ return -EINVAL;
+
+ if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX) {
+ if (data > 5)
+ return -EINVAL;
+
+ config2 = chip->config2 & (~ADT7516_AD_SINGLE_CH_MASK);
+ } else {
+ if (data > 2)
+ return -EINVAL;
+
+ config2 = chip->config2 & (~ADT7316_AD_SINGLE_CH_MASK);
+ }
+
+
+ config2 |= data;
+
+ ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG2, config2);
+ if (ret)
+ return -EIO;
+
+ chip->config2 = config2;
+
+ return len;
+}
+
+static IIO_DEVICE_ATTR(ad_channel, S_IRUGO | S_IWUSR,
+ adt7316_show_ad_channel,
+ adt7316_store_ad_channel,
+ 0);
+
+static ssize_t adt7316_show_all_ad_channels(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ if (!(chip->config2 & ADT7316_AD_SINGLE_CH_MODE))
+ return -EPERM;
+
+ if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX)
+ return sprintf(buf, "0 - VDD\n1 - Internal Temperature\n"
+ "2 - External Temperature or AIN2\n"
+ "3 - AIN2\n4 - AIN3\n5 - AIN4\n");
+ else
+ return sprintf(buf, "0 - VDD\n1 - Internal Temperature\n"
+ "2 - External Temperature\n");
+}
+
+static IIO_DEVICE_ATTR(all_ad_channels, S_IRUGO,
+ adt7316_show_all_ad_channels, NULL, 0);
+
+static ssize_t adt7316_show_disable_averaging(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ return sprintf(buf, "%d\n",
+ !!(chip->config2 & ADT7316_DISABLE_AVERAGING));
+}
+
+static ssize_t adt7316_store_disable_averaging(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+ u8 config2;
+ int ret;
+
+ config2 = chip->config2 & (~ADT7316_DISABLE_AVERAGING);
+ if (!memcmp(buf, "1", 1))
+ config2 |= ADT7316_DISABLE_AVERAGING;
+
+ ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG2, config2);
+ if (ret)
+ return -EIO;
+
+ chip->config2 = config2;
+
+ return len;
+}
+
+static IIO_DEVICE_ATTR(disable_averaging, S_IRUGO | S_IWUSR,
+ adt7316_show_disable_averaging,
+ adt7316_store_disable_averaging,
+ 0);
+
+static ssize_t adt7316_show_enable_smbus_timeout(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ return sprintf(buf, "%d\n",
+ !!(chip->config2 & ADT7316_EN_SMBUS_TIMEOUT));
+}
+
+static ssize_t adt7316_store_enable_smbus_timeout(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+ u8 config2;
+ int ret;
+
+ config2 = chip->config2 & (~ADT7316_EN_SMBUS_TIMEOUT);
+ if (!memcmp(buf, "1", 1))
+ config2 |= ADT7316_EN_SMBUS_TIMEOUT;
+
+ ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG2, config2);
+ if (ret)
+ return -EIO;
+
+ chip->config2 = config2;
+
+ return len;
+}
+
+static IIO_DEVICE_ATTR(enable_smbus_timeout, S_IRUGO | S_IWUSR,
+ adt7316_show_enable_smbus_timeout,
+ adt7316_store_enable_smbus_timeout,
+ 0);
+
+
+static ssize_t adt7316_store_reset(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+ u8 config2;
+ int ret;
+
+ config2 = chip->config2 | ADT7316_RESET;
+
+ ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG2, config2);
+ if (ret)
+ return -EIO;
+
+ return len;
+}
+
+static IIO_DEVICE_ATTR(reset, S_IWUSR,
+ NULL,
+ adt7316_store_reset,
+ 0);
+
+static ssize_t adt7316_show_powerdown(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ return sprintf(buf, "%d\n", !!(chip->config1 & ADT7316_PD));
+}
+
+static ssize_t adt7316_store_powerdown(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+ u8 config1;
+ int ret;
+
+ config1 = chip->config1 & (~ADT7316_PD);
+ if (!memcmp(buf, "1", 1))
+ config1 |= ADT7316_PD;
+
+ ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG1, config1);
+ if (ret)
+ return -EIO;
+
+ chip->config1 = config1;
+
+ return len;
+}
+
+static IIO_DEVICE_ATTR(powerdown, S_IRUGO | S_IWUSR,
+ adt7316_show_powerdown,
+ adt7316_store_powerdown,
+ 0);
+
+static ssize_t adt7316_show_fast_ad_clock(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ return sprintf(buf, "%d\n", !!(chip->config3 & ADT7316_ADCLK_22_5));
+}
+
+static ssize_t adt7316_store_fast_ad_clock(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+ u8 config3;
+ int ret;
+
+ config3 = chip->config3 & (~ADT7316_ADCLK_22_5);
+ if (!memcmp(buf, "1", 1))
+ config3 |= ADT7316_ADCLK_22_5;
+
+ ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG3, config3);
+ if (ret)
+ return -EIO;
+
+ chip->config3 = config3;
+
+ return len;
+}
+
+static IIO_DEVICE_ATTR(fast_ad_clock, S_IRUGO | S_IWUSR,
+ adt7316_show_fast_ad_clock,
+ adt7316_store_fast_ad_clock,
+ 0);
+
+static ssize_t adt7316_show_da_high_resolution(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ if (chip->config3 & ADT7316_DA_HIGH_RESOLUTION) {
+ if (chip->id == ID_ADT7316 || chip->id == ID_ADT7516)
+ return sprintf(buf, "1 (12 bits)\n");
+ else if (chip->id == ID_ADT7317 || chip->id == ID_ADT7517)
+ return sprintf(buf, "1 (10 bits)\n");
+ }
+
+ return sprintf(buf, "0 (8 bits)\n");
+}
+
+static ssize_t adt7316_store_da_high_resolution(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+ u8 config3;
+ int ret;
+
+ chip->dac_bits = 8;
+
+ if (!memcmp(buf, "1", 1)) {
+ config3 = chip->config3 | ADT7316_DA_HIGH_RESOLUTION;
+ if (chip->id == ID_ADT7316 || chip->id == ID_ADT7516)
+ chip->dac_bits = 12;
+ else if (chip->id == ID_ADT7317 || chip->id == ID_ADT7517)
+ chip->dac_bits = 10;
+ } else
+ config3 = chip->config3 & (~ADT7316_DA_HIGH_RESOLUTION);
+
+ ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG3, config3);
+ if (ret)
+ return -EIO;
+
+ chip->config3 = config3;
+
+ return len;
+}
+
+static IIO_DEVICE_ATTR(da_high_resolution, S_IRUGO | S_IWUSR,
+ adt7316_show_da_high_resolution,
+ adt7316_store_da_high_resolution,
+ 0);
+
+static ssize_t adt7316_show_AIN_internal_Vref(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ if ((chip->id & ID_FAMILY_MASK) != ID_ADT75XX)
+ return -EPERM;
+
+ return sprintf(buf, "%d\n",
+ !!(chip->config3 & ADT7516_AIN_IN_VREF));
+}
+
+static ssize_t adt7316_store_AIN_internal_Vref(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+ u8 config3;
+ int ret;
+
+ if ((chip->id & ID_FAMILY_MASK) != ID_ADT75XX)
+ return -EPERM;
+
+ if (memcmp(buf, "1", 1))
+ config3 = chip->config3 & (~ADT7516_AIN_IN_VREF);
+ else
+ config3 = chip->config3 | ADT7516_AIN_IN_VREF;
+
+ ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG3, config3);
+ if (ret)
+ return -EIO;
+
+ chip->config3 = config3;
+
+ return len;
+}
+
+static IIO_DEVICE_ATTR(AIN_internal_Vref, S_IRUGO | S_IWUSR,
+ adt7316_show_AIN_internal_Vref,
+ adt7316_store_AIN_internal_Vref,
+ 0);
+
+
+static ssize_t adt7316_show_enable_prop_DACA(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ return sprintf(buf, "%d\n",
+ !!(chip->config3 & ADT7316_EN_IN_TEMP_PROP_DACA));
+}
+
+static ssize_t adt7316_store_enable_prop_DACA(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+ u8 config3;
+ int ret;
+
+ config3 = chip->config3 & (~ADT7316_EN_IN_TEMP_PROP_DACA);
+ if (!memcmp(buf, "1", 1))
+ config3 |= ADT7316_EN_IN_TEMP_PROP_DACA;
+
+ ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG3, config3);
+ if (ret)
+ return -EIO;
+
+ chip->config3 = config3;
+
+ return len;
+}
+
+static IIO_DEVICE_ATTR(enable_proportion_DACA, S_IRUGO | S_IWUSR,
+ adt7316_show_enable_prop_DACA,
+ adt7316_store_enable_prop_DACA,
+ 0);
+
+static ssize_t adt7316_show_enable_prop_DACB(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ return sprintf(buf, "%d\n",
+ !!(chip->config3 & ADT7316_EN_EX_TEMP_PROP_DACB));
+}
+
+static ssize_t adt7316_store_enable_prop_DACB(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+ u8 config3;
+ int ret;
+
+ config3 = chip->config3 & (~ADT7316_EN_EX_TEMP_PROP_DACB);
+ if (!memcmp(buf, "1", 1))
+ config3 |= ADT7316_EN_EX_TEMP_PROP_DACB;
+
+ ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG3, config3);
+ if (ret)
+ return -EIO;
+
+ chip->config3 = config3;
+
+ return len;
+}
+
+static IIO_DEVICE_ATTR(enable_proportion_DACB, S_IRUGO | S_IWUSR,
+ adt7316_show_enable_prop_DACB,
+ adt7316_store_enable_prop_DACB,
+ 0);
+
+static ssize_t adt7316_show_DAC_2Vref_ch_mask(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ return sprintf(buf, "0x%x\n",
+ chip->dac_config & ADT7316_DA_2VREF_CH_MASK);
+}
+
+static ssize_t adt7316_store_DAC_2Vref_ch_mask(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+ u8 dac_config;
+ unsigned long data = 0;
+ int ret;
+
+ ret = strict_strtoul(buf, 16, &data);
+ if (ret || data > ADT7316_DA_2VREF_CH_MASK)
+ return -EINVAL;
+
+ dac_config = chip->dac_config & (~ADT7316_DA_2VREF_CH_MASK);
+ dac_config |= data;
+
+ ret = chip->bus.write(chip->bus.client, ADT7316_DAC_CONFIG, dac_config);
+ if (ret)
+ return -EIO;
+
+ chip->dac_config = dac_config;
+
+ return len;
+}
+
+static IIO_DEVICE_ATTR(DAC_2Vref_channels_mask, S_IRUGO | S_IWUSR,
+ adt7316_show_DAC_2Vref_ch_mask,
+ adt7316_store_DAC_2Vref_ch_mask,
+ 0);
+
+static ssize_t adt7316_show_DAC_update_mode(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ if (!(chip->config3 & ADT7316_DA_EN_VIA_DAC_LDCA))
+ return sprintf(buf, "manual\n");
+ else {
+ switch (chip->dac_config & ADT7316_DA_EN_MODE_MASK) {
+ case ADT7316_DA_EN_MODE_SINGLE:
+ return sprintf(buf, "0 - auto at any MSB DAC writing\n");
+ case ADT7316_DA_EN_MODE_AB_CD:
+ return sprintf(buf, "1 - auto at MSB DAC AB and CD writing\n");
+ case ADT7316_DA_EN_MODE_ABCD:
+ return sprintf(buf, "2 - auto at MSB DAC ABCD writing\n");
+ default: /* ADT7316_DA_EN_MODE_LDAC */
+ return sprintf(buf, "3 - manual\n");
+ };
+ }
+}
+
+static ssize_t adt7316_store_DAC_update_mode(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+ u8 dac_config;
+ unsigned long data;
+ int ret;
+
+ if (!(chip->config3 & ADT7316_DA_EN_VIA_DAC_LDCA))
+ return -EPERM;
+
+ ret = strict_strtoul(buf, 10, &data);
+ if (ret || data > ADT7316_DA_EN_MODE_MASK)
+ return -EINVAL;
+
+ dac_config = chip->dac_config & (~ADT7316_DA_EN_MODE_MASK);
+ dac_config |= data;
+
+ ret = chip->bus.write(chip->bus.client, ADT7316_DAC_CONFIG, dac_config);
+ if (ret)
+ return -EIO;
+
+ chip->dac_config = dac_config;
+
+ return len;
+}
+
+static IIO_DEVICE_ATTR(DAC_update_mode, S_IRUGO | S_IWUSR,
+ adt7316_show_DAC_update_mode,
+ adt7316_store_DAC_update_mode,
+ 0);
+
+static ssize_t adt7316_show_all_DAC_update_modes(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ if (chip->config3 & ADT7316_DA_EN_VIA_DAC_LDCA)
+ return sprintf(buf, "0 - auto at any MSB DAC writing\n"
+ "1 - auto at MSB DAC AB and CD writing\n"
+ "2 - auto at MSB DAC ABCD writing\n"
+ "3 - manual\n");
+ else
+ return sprintf(buf, "manual\n");
+}
+
+static IIO_DEVICE_ATTR(all_DAC_update_modes, S_IRUGO,
+ adt7316_show_all_DAC_update_modes, NULL, 0);
+
+
+static ssize_t adt7316_store_update_DAC(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+ u8 ldac_config;
+ unsigned long data;
+ int ret;
+
+ if (chip->config3 & ADT7316_DA_EN_VIA_DAC_LDCA) {
+ if ((chip->dac_config & ADT7316_DA_EN_MODE_MASK) !=
+ ADT7316_DA_EN_MODE_LDAC)
+ return -EPERM;
+
+ ret = strict_strtoul(buf, 16, &data);
+ if (ret || data > ADT7316_LDAC_EN_DA_MASK)
+ return -EINVAL;
+
+ ldac_config = chip->ldac_config & (~ADT7316_LDAC_EN_DA_MASK);
+ ldac_config |= data;
+
+ ret = chip->bus.write(chip->bus.client, ADT7316_LDAC_CONFIG,
+ ldac_config);
+ if (ret)
+ return -EIO;
+ } else {
+ gpio_set_value(chip->ldac_pin, 0);
+ gpio_set_value(chip->ldac_pin, 1);
+ }
+
+ return len;
+}
+
+static IIO_DEVICE_ATTR(update_DAC, S_IRUGO | S_IWUSR,
+ NULL,
+ adt7316_store_update_DAC,
+ 0);
+
+static ssize_t adt7316_show_DA_AB_Vref_bypass(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX)
+ return -EPERM;
+
+ return sprintf(buf, "%d\n",
+ !!(chip->dac_config & ADT7316_VREF_BYPASS_DAC_AB));
+}
+
+static ssize_t adt7316_store_DA_AB_Vref_bypass(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+ u8 dac_config;
+ int ret;
+
+ if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX)
+ return -EPERM;
+
+ dac_config = chip->dac_config & (~ADT7316_VREF_BYPASS_DAC_AB);
+ if (!memcmp(buf, "1", 1))
+ dac_config |= ADT7316_VREF_BYPASS_DAC_AB;
+
+ ret = chip->bus.write(chip->bus.client, ADT7316_DAC_CONFIG, dac_config);
+ if (ret)
+ return -EIO;
+
+ chip->dac_config = dac_config;
+
+ return len;
+}
+
+static IIO_DEVICE_ATTR(DA_AB_Vref_bypass, S_IRUGO | S_IWUSR,
+ adt7316_show_DA_AB_Vref_bypass,
+ adt7316_store_DA_AB_Vref_bypass,
+ 0);
+
+static ssize_t adt7316_show_DA_CD_Vref_bypass(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX)
+ return -EPERM;
+
+ return sprintf(buf, "%d\n",
+ !!(chip->dac_config & ADT7316_VREF_BYPASS_DAC_CD));
+}
+
+static ssize_t adt7316_store_DA_CD_Vref_bypass(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+ u8 dac_config;
+ int ret;
+
+ if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX)
+ return -EPERM;
+
+ dac_config = chip->dac_config & (~ADT7316_VREF_BYPASS_DAC_CD);
+ if (!memcmp(buf, "1", 1))
+ dac_config |= ADT7316_VREF_BYPASS_DAC_CD;
+
+ ret = chip->bus.write(chip->bus.client, ADT7316_DAC_CONFIG, dac_config);
+ if (ret)
+ return -EIO;
+
+ chip->dac_config = dac_config;
+
+ return len;
+}
+
+static IIO_DEVICE_ATTR(DA_CD_Vref_bypass, S_IRUGO | S_IWUSR,
+ adt7316_show_DA_CD_Vref_bypass,
+ adt7316_store_DA_CD_Vref_bypass,
+ 0);
+
+static ssize_t adt7316_show_DAC_internal_Vref(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX)
+ return sprintf(buf, "0x%x\n",
+ (chip->dac_config & ADT7516_DAC_IN_VREF_MASK) >>
+ ADT7516_DAC_IN_VREF_OFFSET);
+ else
+ return sprintf(buf, "%d\n",
+ !!(chip->dac_config & ADT7316_DAC_IN_VREF));
+}
+
+static ssize_t adt7316_store_DAC_internal_Vref(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+ u8 ldac_config;
+ unsigned long data;
+ int ret;
+
+ if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX) {
+ ret = strict_strtoul(buf, 16, &data);
+ if (ret || data > 3)
+ return -EINVAL;
+
+ ldac_config = chip->ldac_config & (~ADT7516_DAC_IN_VREF_MASK);
+ if (data & 0x1)
+ ldac_config |= ADT7516_DAC_AB_IN_VREF;
+ else if (data & 0x2)
+ ldac_config |= ADT7516_DAC_CD_IN_VREF;
+ } else {
+ ret = strict_strtoul(buf, 16, &data);
+ if (ret)
+ return -EINVAL;
+
+ ldac_config = chip->ldac_config & (~ADT7316_DAC_IN_VREF);
+ if (data)
+ ldac_config = chip->ldac_config | ADT7316_DAC_IN_VREF;
+ }
+
+ ret = chip->bus.write(chip->bus.client, ADT7316_LDAC_CONFIG, ldac_config);
+ if (ret)
+ return -EIO;
+
+ chip->ldac_config = ldac_config;
+
+ return len;
+}
+
+static IIO_DEVICE_ATTR(DAC_internal_Vref, S_IRUGO | S_IWUSR,
+ adt7316_show_DAC_internal_Vref,
+ adt7316_store_DAC_internal_Vref,
+ 0);
+
+static ssize_t adt7316_show_ad(struct adt7316_chip_info *chip,
+ int channel, char *buf)
+{
+ u16 data;
+ u8 msb, lsb;
+ char sign = ' ';
+ int ret;
+
+ if ((chip->config2 & ADT7316_AD_SINGLE_CH_MODE) &&
+ channel != (chip->config2 & ADT7516_AD_SINGLE_CH_MASK))
+ return -EPERM;
+
+ switch (channel) {
+ case ADT7316_AD_SINGLE_CH_IN:
+ ret = chip->bus.read(chip->bus.client,
+ ADT7316_LSB_IN_TEMP_VDD, &lsb);
+ if (ret)
+ return -EIO;
+
+ ret = chip->bus.read(chip->bus.client,
+ ADT7316_AD_MSB_DATA_BASE + channel, &msb);
+ if (ret)
+ return -EIO;
+
+ data = msb << ADT7316_T_VALUE_FLOAT_OFFSET;
+ data |= lsb & ADT7316_LSB_IN_TEMP_MASK;
+ break;
+ case ADT7316_AD_SINGLE_CH_VDD:
+ ret = chip->bus.read(chip->bus.client,
+ ADT7316_LSB_IN_TEMP_VDD, &lsb);
+ if (ret)
+ return -EIO;
+
+ ret = chip->bus.read(chip->bus.client,
+
+ ADT7316_AD_MSB_DATA_BASE + channel, &msb);
+ if (ret)
+ return -EIO;
+
+ data = msb << ADT7316_T_VALUE_FLOAT_OFFSET;
+ data |= (lsb & ADT7316_LSB_VDD_MASK) >> ADT7316_LSB_VDD_OFFSET;
+ return sprintf(buf, "%d\n", data);
+ default: /* ex_temp and ain */
+ ret = chip->bus.read(chip->bus.client,
+ ADT7316_LSB_EX_TEMP_AIN, &lsb);
+ if (ret)
+ return -EIO;
+
+ ret = chip->bus.read(chip->bus.client,
+ ADT7316_AD_MSB_DATA_BASE + channel, &msb);
+ if (ret)
+ return -EIO;
+
+ data = msb << ADT7316_T_VALUE_FLOAT_OFFSET;
+ data |= lsb & (ADT7316_LSB_EX_TEMP_MASK <<
+ (ADT7516_LSB_AIN_SHIFT * (channel -
+ (ADT7316_MSB_EX_TEMP - ADT7316_AD_MSB_DATA_BASE))));
+
+ if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX)
+ return sprintf(buf, "%d\n", data);
+ else
+ break;
+ };
+
+ if (data & ADT7316_T_VALUE_SIGN) {
+ /* convert supplement to positive value */
+ data = (ADT7316_T_VALUE_SIGN << 1) - data;
+ sign = '-';
+ }
+
+ return sprintf(buf, "%c%d.%.2d\n", sign,
+ (data >> ADT7316_T_VALUE_FLOAT_OFFSET),
+ (data & ADT7316_T_VALUE_FLOAT_MASK) * 25);
+}
+
+static ssize_t adt7316_show_VDD(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ return adt7316_show_ad(chip, ADT7316_AD_SINGLE_CH_VDD, buf);
+}
+static IIO_DEVICE_ATTR(VDD, S_IRUGO, adt7316_show_VDD, NULL, 0);
+
+static ssize_t adt7316_show_in_temp(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ return adt7316_show_ad(chip, ADT7316_AD_SINGLE_CH_IN, buf);
+}
+
+static IIO_DEVICE_ATTR(in_temp, S_IRUGO, adt7316_show_in_temp, NULL, 0);
+
+static ssize_t adt7316_show_ex_temp_AIN1(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ return adt7316_show_ad(chip, ADT7316_AD_SINGLE_CH_EX, buf);
+}
+
+static IIO_DEVICE_ATTR(ex_temp_AIN1, S_IRUGO, adt7316_show_ex_temp_AIN1, NULL, 0);
+static IIO_DEVICE_ATTR(ex_temp, S_IRUGO, adt7316_show_ex_temp_AIN1, NULL, 0);
+
+static ssize_t adt7316_show_AIN2(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ return adt7316_show_ad(chip, ADT7516_AD_SINGLE_CH_AIN2, buf);
+}
+static IIO_DEVICE_ATTR(AIN2, S_IRUGO, adt7316_show_AIN2, NULL, 0);
+
+static ssize_t adt7316_show_AIN3(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ return adt7316_show_ad(chip, ADT7516_AD_SINGLE_CH_AIN3, buf);
+}
+static IIO_DEVICE_ATTR(AIN3, S_IRUGO, adt7316_show_AIN3, NULL, 0);
+
+static ssize_t adt7316_show_AIN4(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ return adt7316_show_ad(chip, ADT7516_AD_SINGLE_CH_AIN4, buf);
+}
+static IIO_DEVICE_ATTR(AIN4, S_IRUGO, adt7316_show_AIN4, NULL, 0);
+
+static ssize_t adt7316_show_temp_offset(struct adt7316_chip_info *chip,
+ int offset_addr, char *buf)
+{
+ int data;
+ u8 val;
+ int ret;
+
+ ret = chip->bus.read(chip->bus.client, offset_addr, &val);
+ if (ret)
+ return -EIO;
+
+ data = (int)val;
+ if (val & 0x80)
+ data -= 256;
+
+ return sprintf(buf, "%d\n", data);
+}
+
+static ssize_t adt7316_store_temp_offset(struct adt7316_chip_info *chip,
+ int offset_addr, const char *buf, size_t len)
+{
+ long data;
+ u8 val;
+ int ret;
+
+ ret = strict_strtol(buf, 10, &data);
+ if (ret || data > 127 || data < -128)
+ return -EINVAL;
+
+ if (data < 0)
+ data += 256;
+
+ val = (u8)data;
+
+ ret = chip->bus.write(chip->bus.client, offset_addr, val);
+ if (ret)
+ return -EIO;
+
+ return len;
+}
+
+static ssize_t adt7316_show_in_temp_offset(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ return adt7316_show_temp_offset(chip, ADT7316_IN_TEMP_OFFSET, buf);
+}
+
+static ssize_t adt7316_store_in_temp_offset(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ return adt7316_store_temp_offset(chip, ADT7316_IN_TEMP_OFFSET, buf, len);
+}
+
+static IIO_DEVICE_ATTR(in_temp_offset, S_IRUGO | S_IWUSR,
+ adt7316_show_in_temp_offset,
+ adt7316_store_in_temp_offset, 0);
+
+static ssize_t adt7316_show_ex_temp_offset(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ return adt7316_show_temp_offset(chip, ADT7316_EX_TEMP_OFFSET, buf);
+}
+
+static ssize_t adt7316_store_ex_temp_offset(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ return adt7316_store_temp_offset(chip, ADT7316_EX_TEMP_OFFSET, buf, len);
+}
+
+static IIO_DEVICE_ATTR(ex_temp_offset, S_IRUGO | S_IWUSR,
+ adt7316_show_ex_temp_offset,
+ adt7316_store_ex_temp_offset, 0);
+
+static ssize_t adt7316_show_in_analog_temp_offset(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ return adt7316_show_temp_offset(chip,
+ ADT7316_IN_ANALOG_TEMP_OFFSET, buf);
+}
+
+static ssize_t adt7316_store_in_analog_temp_offset(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ return adt7316_store_temp_offset(chip,
+ ADT7316_IN_ANALOG_TEMP_OFFSET, buf, len);
+}
+
+static IIO_DEVICE_ATTR(in_analog_temp_offset, S_IRUGO | S_IWUSR,
+ adt7316_show_in_analog_temp_offset,
+ adt7316_store_in_analog_temp_offset, 0);
+
+static ssize_t adt7316_show_ex_analog_temp_offset(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ return adt7316_show_temp_offset(chip,
+ ADT7316_EX_ANALOG_TEMP_OFFSET, buf);
+}
+
+static ssize_t adt7316_store_ex_analog_temp_offset(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ return adt7316_store_temp_offset(chip,
+ ADT7316_EX_ANALOG_TEMP_OFFSET, buf, len);
+}
+
+static IIO_DEVICE_ATTR(ex_analog_temp_offset, S_IRUGO | S_IWUSR,
+ adt7316_show_ex_analog_temp_offset,
+ adt7316_store_ex_analog_temp_offset, 0);
+
+static ssize_t adt7316_show_DAC(struct adt7316_chip_info *chip,
+ int channel, char *buf)
+{
+ u16 data;
+ u8 msb, lsb, offset;
+ int ret;
+
+ if (channel >= ADT7316_DA_MSB_DATA_REGS ||
+ (channel == 0 &&
+ (chip->config3 & ADT7316_EN_IN_TEMP_PROP_DACA)) ||
+ (channel == 1 &&
+ (chip->config3 & ADT7316_EN_EX_TEMP_PROP_DACB)))
+ return -EPERM;
+
+ offset = chip->dac_bits - 8;
+
+ if (chip->dac_bits > 8) {
+ ret = chip->bus.read(chip->bus.client,
+ ADT7316_DA_DATA_BASE + channel * 2, &lsb);
+ if (ret)
+ return -EIO;
+ }
+
+ ret = chip->bus.read(chip->bus.client,
+ ADT7316_DA_DATA_BASE + 1 + channel * 2, &msb);
+ if (ret)
+ return -EIO;
+
+ data = (msb << offset) + (lsb & ((1 << offset) - 1));
+
+ return sprintf(buf, "%d\n", data);
+}
+
+static ssize_t adt7316_store_DAC(struct adt7316_chip_info *chip,
+ int channel, const char *buf, size_t len)
+{
+ u8 msb, lsb, offset;
+ unsigned long data;
+ int ret;
+
+ if (channel >= ADT7316_DA_MSB_DATA_REGS ||
+ (channel == 0 &&
+ (chip->config3 & ADT7316_EN_IN_TEMP_PROP_DACA)) ||
+ (channel == 1 &&
+ (chip->config3 & ADT7316_EN_EX_TEMP_PROP_DACB)))
+ return -EPERM;
+
+ offset = chip->dac_bits - 8;
+
+ ret = strict_strtoul(buf, 10, &data);
+ if (ret || data >= (1 << chip->dac_bits))
+ return -EINVAL;
+
+ if (chip->dac_bits > 8) {
+ lsb = data & (1 << offset);
+ ret = chip->bus.write(chip->bus.client,
+ ADT7316_DA_DATA_BASE + channel * 2, lsb);
+ if (ret)
+ return -EIO;
+ }
+
+ msb = data >> offset;
+ ret = chip->bus.write(chip->bus.client,
+ ADT7316_DA_DATA_BASE + 1 + channel * 2, msb);
+ if (ret)
+ return -EIO;
+
+ return len;
+}
+
+static ssize_t adt7316_show_DAC_A(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ return adt7316_show_DAC(chip, 0, buf);
+}
+
+static ssize_t adt7316_store_DAC_A(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ return adt7316_store_DAC(chip, 0, buf, len);
+}
+
+static IIO_DEVICE_ATTR(DAC_A, S_IRUGO | S_IWUSR, adt7316_show_DAC_A,
+ adt7316_store_DAC_A, 0);
+
+static ssize_t adt7316_show_DAC_B(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ return adt7316_show_DAC(chip, 1, buf);
+}
+
+static ssize_t adt7316_store_DAC_B(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ return adt7316_store_DAC(chip, 1, buf, len);
+}
+
+static IIO_DEVICE_ATTR(DAC_B, S_IRUGO | S_IWUSR, adt7316_show_DAC_B,
+ adt7316_store_DAC_B, 0);
+
+static ssize_t adt7316_show_DAC_C(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ return adt7316_show_DAC(chip, 2, buf);
+}
+
+static ssize_t adt7316_store_DAC_C(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ return adt7316_store_DAC(chip, 2, buf, len);
+}
+
+static IIO_DEVICE_ATTR(DAC_C, S_IRUGO | S_IWUSR, adt7316_show_DAC_C,
+ adt7316_store_DAC_C, 0);
+
+static ssize_t adt7316_show_DAC_D(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ return adt7316_show_DAC(chip, 3, buf);
+}
+
+static ssize_t adt7316_store_DAC_D(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ return adt7316_store_DAC(chip, 3, buf, len);
+}
+
+static IIO_DEVICE_ATTR(DAC_D, S_IRUGO | S_IWUSR, adt7316_show_DAC_D,
+ adt7316_store_DAC_D, 0);
+
+static ssize_t adt7316_show_device_id(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+ u8 id;
+ int ret;
+
+ ret = chip->bus.read(chip->bus.client, ADT7316_DEVICE_ID, &id);
+ if (ret)
+ return -EIO;
+
+ return sprintf(buf, "%d\n", id);
+}
+
+static IIO_DEVICE_ATTR(device_id, S_IRUGO, adt7316_show_device_id, NULL, 0);
+
+static ssize_t adt7316_show_manufactorer_id(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+ u8 id;
+ int ret;
+
+ ret = chip->bus.read(chip->bus.client, ADT7316_MANUFACTURE_ID, &id);
+ if (ret)
+ return -EIO;
+
+ return sprintf(buf, "%d\n", id);
+}
+
+static IIO_DEVICE_ATTR(manufactorer_id, S_IRUGO,
+ adt7316_show_manufactorer_id, NULL, 0);
+
+static ssize_t adt7316_show_device_rev(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+ u8 rev;
+ int ret;
+
+ ret = chip->bus.read(chip->bus.client, ADT7316_DEVICE_REV, &rev);
+ if (ret)
+ return -EIO;
+
+ return sprintf(buf, "%d\n", rev);
+}
+
+static IIO_DEVICE_ATTR(device_rev, S_IRUGO, adt7316_show_device_rev, NULL, 0);
+
+static ssize_t adt7316_show_bus_type(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+ u8 stat;
+ int ret;
+
+ ret = chip->bus.read(chip->bus.client, ADT7316_SPI_LOCK_STAT, &stat);
+ if (ret)
+ return -EIO;
+
+ if (stat)
+ return sprintf(buf, "spi\n");
+ else
+ return sprintf(buf, "i2c\n");
+}
+
+static IIO_DEVICE_ATTR(bus_type, S_IRUGO, adt7316_show_bus_type, NULL, 0);
+
+static ssize_t adt7316_show_name(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ return sprintf(buf, "%s\n", chip->name);
+}
+
+static IIO_DEVICE_ATTR(name, S_IRUGO, adt7316_show_name, NULL, 0);
+
+static struct attribute *adt7316_attributes[] = {
+ &iio_dev_attr_all_modes.dev_attr.attr,
+ &iio_dev_attr_mode.dev_attr.attr,
+ &iio_dev_attr_reset.dev_attr.attr,
+ &iio_dev_attr_enabled.dev_attr.attr,
+ &iio_dev_attr_ad_channel.dev_attr.attr,
+ &iio_dev_attr_all_ad_channels.dev_attr.attr,
+ &iio_dev_attr_disable_averaging.dev_attr.attr,
+ &iio_dev_attr_enable_smbus_timeout.dev_attr.attr,
+ &iio_dev_attr_powerdown.dev_attr.attr,
+ &iio_dev_attr_fast_ad_clock.dev_attr.attr,
+ &iio_dev_attr_da_high_resolution.dev_attr.attr,
+ &iio_dev_attr_enable_proportion_DACA.dev_attr.attr,
+ &iio_dev_attr_enable_proportion_DACB.dev_attr.attr,
+ &iio_dev_attr_DAC_2Vref_channels_mask.dev_attr.attr,
+ &iio_dev_attr_DAC_update_mode.dev_attr.attr,
+ &iio_dev_attr_all_DAC_update_modes.dev_attr.attr,
+ &iio_dev_attr_update_DAC.dev_attr.attr,
+ &iio_dev_attr_DA_AB_Vref_bypass.dev_attr.attr,
+ &iio_dev_attr_DA_CD_Vref_bypass.dev_attr.attr,
+ &iio_dev_attr_DAC_internal_Vref.dev_attr.attr,
+ &iio_dev_attr_VDD.dev_attr.attr,
+ &iio_dev_attr_in_temp.dev_attr.attr,
+ &iio_dev_attr_ex_temp.dev_attr.attr,
+ &iio_dev_attr_in_temp_offset.dev_attr.attr,
+ &iio_dev_attr_ex_temp_offset.dev_attr.attr,
+ &iio_dev_attr_in_analog_temp_offset.dev_attr.attr,
+ &iio_dev_attr_ex_analog_temp_offset.dev_attr.attr,
+ &iio_dev_attr_DAC_A.dev_attr.attr,
+ &iio_dev_attr_DAC_B.dev_attr.attr,
+ &iio_dev_attr_DAC_C.dev_attr.attr,
+ &iio_dev_attr_DAC_D.dev_attr.attr,
+ &iio_dev_attr_device_id.dev_attr.attr,
+ &iio_dev_attr_manufactorer_id.dev_attr.attr,
+ &iio_dev_attr_device_rev.dev_attr.attr,
+ &iio_dev_attr_bus_type.dev_attr.attr,
+ &iio_dev_attr_name.dev_attr.attr,
+ NULL,
+};
+
+static const struct attribute_group adt7316_attribute_group = {
+ .attrs = adt7316_attributes,
+};
+
+static struct attribute *adt7516_attributes[] = {
+ &iio_dev_attr_all_modes.dev_attr.attr,
+ &iio_dev_attr_mode.dev_attr.attr,
+ &iio_dev_attr_select_ex_temp.dev_attr.attr,
+ &iio_dev_attr_reset.dev_attr.attr,
+ &iio_dev_attr_enabled.dev_attr.attr,
+ &iio_dev_attr_ad_channel.dev_attr.attr,
+ &iio_dev_attr_all_ad_channels.dev_attr.attr,
+ &iio_dev_attr_disable_averaging.dev_attr.attr,
+ &iio_dev_attr_enable_smbus_timeout.dev_attr.attr,
+ &iio_dev_attr_powerdown.dev_attr.attr,
+ &iio_dev_attr_fast_ad_clock.dev_attr.attr,
+ &iio_dev_attr_AIN_internal_Vref.dev_attr.attr,
+ &iio_dev_attr_da_high_resolution.dev_attr.attr,
+ &iio_dev_attr_enable_proportion_DACA.dev_attr.attr,
+ &iio_dev_attr_enable_proportion_DACB.dev_attr.attr,
+ &iio_dev_attr_DAC_2Vref_channels_mask.dev_attr.attr,
+ &iio_dev_attr_DAC_update_mode.dev_attr.attr,
+ &iio_dev_attr_all_DAC_update_modes.dev_attr.attr,
+ &iio_dev_attr_update_DAC.dev_attr.attr,
+ &iio_dev_attr_DA_AB_Vref_bypass.dev_attr.attr,
+ &iio_dev_attr_DA_CD_Vref_bypass.dev_attr.attr,
+ &iio_dev_attr_DAC_internal_Vref.dev_attr.attr,
+ &iio_dev_attr_VDD.dev_attr.attr,
+ &iio_dev_attr_in_temp.dev_attr.attr,
+ &iio_dev_attr_ex_temp_AIN1.dev_attr.attr,
+ &iio_dev_attr_AIN2.dev_attr.attr,
+ &iio_dev_attr_AIN3.dev_attr.attr,
+ &iio_dev_attr_AIN4.dev_attr.attr,
+ &iio_dev_attr_in_temp_offset.dev_attr.attr,
+ &iio_dev_attr_ex_temp_offset.dev_attr.attr,
+ &iio_dev_attr_in_analog_temp_offset.dev_attr.attr,
+ &iio_dev_attr_ex_analog_temp_offset.dev_attr.attr,
+ &iio_dev_attr_DAC_A.dev_attr.attr,
+ &iio_dev_attr_DAC_B.dev_attr.attr,
+ &iio_dev_attr_DAC_C.dev_attr.attr,
+ &iio_dev_attr_DAC_D.dev_attr.attr,
+ &iio_dev_attr_device_id.dev_attr.attr,
+ &iio_dev_attr_manufactorer_id.dev_attr.attr,
+ &iio_dev_attr_device_rev.dev_attr.attr,
+ &iio_dev_attr_bus_type.dev_attr.attr,
+ &iio_dev_attr_name.dev_attr.attr,
+ NULL,
+};
+
+static const struct attribute_group adt7516_attribute_group = {
+ .attrs = adt7516_attributes,
+};
+
+
+/*
+ * temperature bound events
+ */
+
+#define IIO_EVENT_CODE_ADT7316_IN_TEMP_HIGH IIO_BUFFER_EVENT_CODE(0)
+#define IIO_EVENT_CODE_ADT7316_IN_TEMP_LOW IIO_BUFFER_EVENT_CODE(1)
+#define IIO_EVENT_CODE_ADT7316_EX_TEMP_HIGH IIO_BUFFER_EVENT_CODE(2)
+#define IIO_EVENT_CODE_ADT7316_EX_TEMP_LOW IIO_BUFFER_EVENT_CODE(3)
+#define IIO_EVENT_CODE_ADT7316_EX_TEMP_FAULT IIO_BUFFER_EVENT_CODE(4)
+#define IIO_EVENT_CODE_ADT7516_AIN1 IIO_BUFFER_EVENT_CODE(5)
+#define IIO_EVENT_CODE_ADT7516_AIN2 IIO_BUFFER_EVENT_CODE(6)
+#define IIO_EVENT_CODE_ADT7516_AIN3 IIO_BUFFER_EVENT_CODE(7)
+#define IIO_EVENT_CODE_ADT7516_AIN4 IIO_BUFFER_EVENT_CODE(8)
+#define IIO_EVENT_CODE_ADT7316_VDD IIO_BUFFER_EVENT_CODE(9)
+
+static void adt7316_interrupt_bh(struct work_struct *work_s)
+{
+ struct adt7316_chip_info *chip =
+ container_of(work_s, struct adt7316_chip_info, thresh_work);
+ u8 stat1, stat2;
+ int i, ret, count;
+
+ ret = chip->bus.read(chip->bus.client, ADT7316_INT_STAT1, &stat1);
+ if (!ret) {
+ if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX)
+ count = 8;
+ else
+ count = 5;
+
+ for (i = 0; i < count; i++) {
+ if (stat1 & (1 << i))
+ iio_push_event(chip->indio_dev, 0,
+ IIO_EVENT_CODE_ADT7316_IN_TEMP_HIGH + i,
+ chip->last_timestamp);
+ }
+ }
+
+ ret = chip->bus.read(chip->bus.client, ADT7316_INT_STAT2, &stat2);
+ if (!ret) {
+ if (stat2 & ADT7316_INT_MASK2_VDD)
+ iio_push_event(chip->indio_dev, 0,
+ IIO_EVENT_CODE_ADT7316_VDD,
+ chip->last_timestamp);
+ }
+
+ enable_irq(chip->bus.irq);
+}
+
+static int adt7316_interrupt(struct iio_dev *dev_info,
+ int index,
+ s64 timestamp,
+ int no_test)
+{
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ chip->last_timestamp = timestamp;
+ schedule_work(&chip->thresh_work);
+
+ return 0;
+}
+
+IIO_EVENT_SH(adt7316, &adt7316_interrupt);
+
+/*
+ * Show mask of enabled interrupts in Hex.
+ */
+static ssize_t adt7316_show_int_mask(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ return sprintf(buf, "0x%x\n", chip->int_mask);
+}
+
+/*
+ * Set 1 to the mask in Hex to enabled interrupts.
+ */
+static ssize_t adt7316_set_int_mask(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+ unsigned long data;
+ int ret;
+ u8 mask;
+
+ ret = strict_strtoul(buf, 16, &data);
+ if (ret || data >= ADT7316_VDD_INT_MASK + 1)
+ return -EINVAL;
+
+ if (data & ADT7316_VDD_INT_MASK)
+ mask = 0; /* enable vdd int */
+ else
+ mask = ADT7316_INT_MASK2_VDD; /* disable vdd int */
+
+ ret = chip->bus.write(chip->bus.client, ADT7316_INT_MASK2, mask);
+ if (!ret) {
+ chip->int_mask &= ~ADT7316_VDD_INT_MASK;
+ chip->int_mask |= data & ADT7316_VDD_INT_MASK;
+ }
+
+ if (data & ADT7316_TEMP_AIN_INT_MASK) {
+ if ((chip->id & ID_FAMILY_MASK) == ID_ADT73XX)
+ /* mask in reg is opposite, set 1 to disable */
+ mask = (~data) & ADT7316_TEMP_INT_MASK;
+ else
+ /* mask in reg is opposite, set 1 to disable */
+ mask = (~data) & ADT7316_TEMP_AIN_INT_MASK;
+ }
+ ret = chip->bus.write(chip->bus.client, ADT7316_INT_MASK1, mask);
+
+ chip->int_mask = mask;
+
+ return len;
+}
+static inline ssize_t adt7316_show_ad_bound(struct device *dev,
+ struct device_attribute *attr,
+ u8 bound_reg,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+ u8 val;
+ int data;
+ int ret;
+
+ if ((chip->id & ID_FAMILY_MASK) == ID_ADT73XX &&
+ bound_reg > ADT7316_EX_TEMP_LOW)
+ return -EPERM;
+
+ ret = chip->bus.read(chip->bus.client, bound_reg, &val);
+ if (ret)
+ return -EIO;
+
+ data = (int)val;
+
+ if (!((chip->id & ID_FAMILY_MASK) == ID_ADT75XX &&
+ (chip->config1 & ADT7516_SEL_AIN1_2_EX_TEMP_MASK) == 0)) {
+ if (data & 0x80)
+ data -= 256;
+ }
+
+ return sprintf(buf, "%d\n", data);
+}
+
+static inline ssize_t adt7316_set_ad_bound(struct device *dev,
+ struct device_attribute *attr,
+ u8 bound_reg,
+ const char *buf,
+ size_t len)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+ long data;
+ u8 val;
+ int ret;
+
+ if ((chip->id & ID_FAMILY_MASK) == ID_ADT73XX &&
+ bound_reg > ADT7316_EX_TEMP_LOW)
+ return -EPERM;
+
+ ret = strict_strtol(buf, 10, &data);
+ if (ret)
+ return -EINVAL;
+
+ if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX &&
+ (chip->config1 & ADT7516_SEL_AIN1_2_EX_TEMP_MASK) == 0) {
+ if (data > 255 || data < 0)
+ return -EINVAL;
+ } else {
+ if (data > 127 || data < -128)
+ return -EINVAL;
+
+ if (data < 0)
+ data += 256;
+ }
+
+ val = (u8)data;
+
+ ret = chip->bus.write(chip->bus.client, bound_reg, val);
+ if (ret)
+ return -EIO;
+
+ return len;
+}
+
+static ssize_t adt7316_show_in_temp_high(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return adt7316_show_ad_bound(dev, attr,
+ ADT7316_IN_TEMP_HIGH, buf);
+}
+
+static inline ssize_t adt7316_set_in_temp_high(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ return adt7316_set_ad_bound(dev, attr,
+ ADT7316_IN_TEMP_HIGH, buf, len);
+}
+
+static ssize_t adt7316_show_in_temp_low(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return adt7316_show_ad_bound(dev, attr,
+ ADT7316_IN_TEMP_LOW, buf);
+}
+
+static inline ssize_t adt7316_set_in_temp_low(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ return adt7316_set_ad_bound(dev, attr,
+ ADT7316_IN_TEMP_LOW, buf, len);
+}
+
+static ssize_t adt7316_show_ex_temp_ain1_high(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return adt7316_show_ad_bound(dev, attr,
+ ADT7316_EX_TEMP_HIGH, buf);
+}
+
+static inline ssize_t adt7316_set_ex_temp_ain1_high(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ return adt7316_set_ad_bound(dev, attr,
+ ADT7316_EX_TEMP_HIGH, buf, len);
+}
+
+static ssize_t adt7316_show_ex_temp_ain1_low(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return adt7316_show_ad_bound(dev, attr,
+ ADT7316_EX_TEMP_LOW, buf);
+}
+
+static inline ssize_t adt7316_set_ex_temp_ain1_low(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ return adt7316_set_ad_bound(dev, attr,
+ ADT7316_EX_TEMP_LOW, buf, len);
+}
+
+static ssize_t adt7316_show_ain2_high(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return adt7316_show_ad_bound(dev, attr,
+ ADT7516_AIN2_HIGH, buf);
+}
+
+static inline ssize_t adt7316_set_ain2_high(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ return adt7316_set_ad_bound(dev, attr,
+ ADT7516_AIN2_HIGH, buf, len);
+}
+
+static ssize_t adt7316_show_ain2_low(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return adt7316_show_ad_bound(dev, attr,
+ ADT7516_AIN2_LOW, buf);
+}
+
+static inline ssize_t adt7316_set_ain2_low(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ return adt7316_set_ad_bound(dev, attr,
+ ADT7516_AIN2_LOW, buf, len);
+}
+
+static ssize_t adt7316_show_ain3_high(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return adt7316_show_ad_bound(dev, attr,
+ ADT7516_AIN3_HIGH, buf);
+}
+
+static inline ssize_t adt7316_set_ain3_high(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ return adt7316_set_ad_bound(dev, attr,
+ ADT7516_AIN3_HIGH, buf, len);
+}
+
+static ssize_t adt7316_show_ain3_low(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return adt7316_show_ad_bound(dev, attr,
+ ADT7516_AIN3_LOW, buf);
+}
+
+static inline ssize_t adt7316_set_ain3_low(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ return adt7316_set_ad_bound(dev, attr,
+ ADT7516_AIN3_LOW, buf, len);
+}
+
+static ssize_t adt7316_show_ain4_high(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return adt7316_show_ad_bound(dev, attr,
+ ADT7516_AIN4_HIGH, buf);
+}
+
+static inline ssize_t adt7316_set_ain4_high(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ return adt7316_set_ad_bound(dev, attr,
+ ADT7516_AIN4_HIGH, buf, len);
+}
+
+static ssize_t adt7316_show_ain4_low(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return adt7316_show_ad_bound(dev, attr,
+ ADT7516_AIN4_LOW, buf);
+}
+
+static inline ssize_t adt7316_set_ain4_low(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ return adt7316_set_ad_bound(dev, attr,
+ ADT7516_AIN4_LOW, buf, len);
+}
+
+static ssize_t adt7316_show_int_enabled(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ return sprintf(buf, "%d\n", !!(chip->config1 & ADT7316_INT_EN));
+}
+
+static ssize_t adt7316_set_int_enabled(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+ u8 config1;
+ int ret;
+
+ config1 = chip->config1 & (~ADT7316_INT_EN);
+ if (!memcmp(buf, "1", 1))
+ config1 |= ADT7316_INT_EN;
+
+ ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG1, config1);
+ if (ret)
+ return -EIO;
+
+ chip->config1 = config1;
+
+ return len;
+}
+
+
+IIO_EVENT_ATTR_SH(int_mask, iio_event_adt7316,
+ adt7316_show_int_mask, adt7316_set_int_mask, 0);
+IIO_EVENT_ATTR_SH(in_temp_high, iio_event_adt7316,
+ adt7316_show_in_temp_high, adt7316_set_in_temp_high, 0);
+IIO_EVENT_ATTR_SH(in_temp_low, iio_event_adt7316,
+ adt7316_show_in_temp_low, adt7316_set_in_temp_low, 0);
+IIO_EVENT_ATTR_SH(ex_temp_high, iio_event_adt7316,
+ adt7316_show_ex_temp_ain1_high,
+ adt7316_set_ex_temp_ain1_high, 0);
+IIO_EVENT_ATTR_SH(ex_temp_low, iio_event_adt7316,
+ adt7316_show_ex_temp_ain1_low,
+ adt7316_set_ex_temp_ain1_low, 0);
+IIO_EVENT_ATTR_SH(ex_temp_ain1_high, iio_event_adt7316,
+ adt7316_show_ex_temp_ain1_high,
+ adt7316_set_ex_temp_ain1_high, 0);
+IIO_EVENT_ATTR_SH(ex_temp_ain1_low, iio_event_adt7316,
+ adt7316_show_ex_temp_ain1_low,
+ adt7316_set_ex_temp_ain1_low, 0);
+IIO_EVENT_ATTR_SH(ain2_high, iio_event_adt7316,
+ adt7316_show_ain2_high, adt7316_set_ain2_high, 0);
+IIO_EVENT_ATTR_SH(ain2_low, iio_event_adt7316,
+ adt7316_show_ain2_low, adt7316_set_ain2_low, 0);
+IIO_EVENT_ATTR_SH(ain3_high, iio_event_adt7316,
+ adt7316_show_ain3_high, adt7316_set_ain3_high, 0);
+IIO_EVENT_ATTR_SH(ain3_low, iio_event_adt7316,
+ adt7316_show_ain3_low, adt7316_set_ain3_low, 0);
+IIO_EVENT_ATTR_SH(ain4_high, iio_event_adt7316,
+ adt7316_show_ain4_high, adt7316_set_ain4_high, 0);
+IIO_EVENT_ATTR_SH(ain4_low, iio_event_adt7316,
+ adt7316_show_ain4_low, adt7316_set_ain4_low, 0);
+IIO_EVENT_ATTR_SH(int_enabled, iio_event_adt7316,
+ adt7316_show_int_enabled, adt7316_set_int_enabled, 0);
+
+static struct attribute *adt7316_event_attributes[] = {
+ &iio_event_attr_int_mask.dev_attr.attr,
+ &iio_event_attr_in_temp_high.dev_attr.attr,
+ &iio_event_attr_in_temp_low.dev_attr.attr,
+ &iio_event_attr_ex_temp_high.dev_attr.attr,
+ &iio_event_attr_ex_temp_low.dev_attr.attr,
+ &iio_event_attr_int_enabled.dev_attr.attr,
+ NULL,
+};
+
+static struct attribute_group adt7316_event_attribute_group = {
+ .attrs = adt7316_event_attributes,
+};
+
+static struct attribute *adt7516_event_attributes[] = {
+ &iio_event_attr_int_mask.dev_attr.attr,
+ &iio_event_attr_in_temp_high.dev_attr.attr,
+ &iio_event_attr_in_temp_low.dev_attr.attr,
+ &iio_event_attr_ex_temp_ain1_high.dev_attr.attr,
+ &iio_event_attr_ex_temp_ain1_low.dev_attr.attr,
+ &iio_event_attr_ain2_high.dev_attr.attr,
+ &iio_event_attr_ain2_low.dev_attr.attr,
+ &iio_event_attr_ain3_high.dev_attr.attr,
+ &iio_event_attr_ain3_low.dev_attr.attr,
+ &iio_event_attr_ain4_high.dev_attr.attr,
+ &iio_event_attr_ain4_low.dev_attr.attr,
+ &iio_event_attr_int_enabled.dev_attr.attr,
+ NULL,
+};
+
+static struct attribute_group adt7516_event_attribute_group = {
+ .attrs = adt7516_event_attributes,
+};
+
+#ifdef CONFIG_PM
+int adt7316_disable(struct device *dev)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ return _adt7316_store_enabled(chip, 0);
+}
+EXPORT_SYMBOL(adt7316_disable);
+
+int adt7316_enable(struct device *dev)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+
+ return _adt7316_store_enabled(chip, 1);
+}
+EXPORT_SYMBOL(adt7316_enable);
+#endif
+
+/*
+ * device probe and remove
+ */
+int __devinit adt7316_probe(struct device *dev, struct adt7316_bus *bus,
+ const char *name)
+{
+ struct adt7316_chip_info *chip;
+ unsigned short *adt7316_platform_data = dev->platform_data;
+ int ret = 0;
+
+ chip = kzalloc(sizeof(struct adt7316_chip_info), GFP_KERNEL);
+
+ if (chip == NULL)
+ return -ENOMEM;
+
+ /* this is only used for device removal purposes */
+ dev_set_drvdata(dev, chip);
+
+ chip->bus = *bus;
+ chip->name = name;
+
+ if (name[4] == '3')
+ chip->id = ID_ADT7316 + (name[6] - '6');
+ else if (name[4] == '5')
+ chip->id = ID_ADT7516 + (name[6] - '6');
+ else
+ return -ENODEV;
+
+ chip->ldac_pin = adt7316_platform_data[1];
+ if (chip->ldac_pin) {
+ chip->config3 |= ADT7316_DA_EN_VIA_DAC_LDCA;
+ if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX)
+ chip->config1 |= ADT7516_SEL_AIN3;
+ }
+ chip->int_mask = ADT7316_TEMP_INT_MASK | ADT7316_VDD_INT_MASK;
+ if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX)
+ chip->int_mask |= ADT7516_AIN_INT_MASK;
+
+ chip->indio_dev = iio_allocate_device();
+ if (chip->indio_dev == NULL) {
+ ret = -ENOMEM;
+ goto error_free_chip;
+ }
+
+ chip->indio_dev->dev.parent = dev;
+ if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX) {
+ chip->indio_dev->attrs = &adt7516_attribute_group;
+ chip->indio_dev->event_attrs = &adt7516_event_attribute_group;
+ } else {
+ chip->indio_dev->attrs = &adt7316_attribute_group;
+ chip->indio_dev->event_attrs = &adt7316_event_attribute_group;
+ }
+ chip->indio_dev->dev_data = (void *)chip;
+ chip->indio_dev->driver_module = THIS_MODULE;
+ chip->indio_dev->num_interrupt_lines = 1;
+ chip->indio_dev->modes = INDIO_DIRECT_MODE;
+
+ ret = iio_device_register(chip->indio_dev);
+ if (ret)
+ goto error_free_dev;
+
+ if (chip->bus.irq > 0) {
+ if (adt7316_platform_data[0])
+ chip->bus.irq_flags = adt7316_platform_data[0];
+
+ ret = iio_register_interrupt_line(chip->bus.irq,
+ chip->indio_dev,
+ 0,
+ chip->bus.irq_flags,
+ chip->name);
+ if (ret)
+ goto error_unreg_dev;
+
+ /*
+ * The event handler list element refer to iio_event_adt7316.
+ * All event attributes bind to the same event handler.
+ * So, only register event handler once.
+ */
+ iio_add_event_to_list(&iio_event_adt7316,
+ &chip->indio_dev->interrupts[0]->ev_list);
+
+ INIT_WORK(&chip->thresh_work, adt7316_interrupt_bh);
+
+ if (chip->bus.irq_flags & IRQF_TRIGGER_HIGH)
+ chip->config1 |= ADT7316_INT_POLARITY;
+ }
+
+ ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG1, chip->config1);
+ if (ret) {
+ ret = -EIO;
+ goto error_unreg_irq;
+ }
+
+ ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG3, chip->config3);
+ if (ret) {
+ ret = -EIO;
+ goto error_unreg_irq;
+ }
+
+ dev_info(dev, "%s temperature sensor, ADC and DAC registered.\n",
+ chip->name);
+
+ return 0;
+
+error_unreg_irq:
+ iio_unregister_interrupt_line(chip->indio_dev, 0);
+error_unreg_dev:
+ iio_device_unregister(chip->indio_dev);
+error_free_dev:
+ iio_free_device(chip->indio_dev);
+error_free_chip:
+ kfree(chip);
+
+ return ret;
+}
+EXPORT_SYMBOL(adt7316_probe);
+
+int __devexit adt7316_remove(struct device *dev)
+{
+
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct adt7316_chip_info *chip = dev_info->dev_data;
+ struct iio_dev *indio_dev = chip->indio_dev;
+
+ dev_set_drvdata(dev, NULL);
+ if (chip->bus.irq)
+ iio_unregister_interrupt_line(indio_dev, 0);
+ iio_device_unregister(indio_dev);
+ iio_free_device(chip->indio_dev);
+ kfree(chip);
+
+ return 0;
+}
+EXPORT_SYMBOL(adt7316_remove);
+
+MODULE_AUTHOR("Sonic Zhang <sonic.zhang@analog.com>");
+MODULE_DESCRIPTION("Analog Devices ADT7316/7/8 and ADT7516/7/9 digital"
+ " temperature sensor, ADC and DAC driver");
+MODULE_LICENSE("GPL v2");
projects / mv-sheeva.git / blobdiff