// SPDX-License-Identifier: GPL-2.0+
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/*
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* ADT7316 digital temperature sensor driver supporting ADT7316/7/8 ADT7516/7/9
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*
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* Copyright 2010 Analog Devices Inc.
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*/
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#include <linux/interrupt.h>
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#include <linux/gpio/consumer.h>
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#include <linux/irq.h>
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#include <linux/workqueue.h>
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#include <linux/device.h>
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/sysfs.h>
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#include <linux/list.h>
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#include <linux/i2c.h>
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#include <linux/rtc.h>
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#include <linux/module.h>
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#include <linux/iio/iio.h>
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#include <linux/iio/events.h>
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#include <linux/iio/sysfs.h>
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#include "adt7316.h"
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/*
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* ADT7316 registers definition
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*/
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#define ADT7316_INT_STAT1 0x0
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#define ADT7316_INT_STAT2 0x1
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#define ADT7316_LSB_IN_TEMP_VDD 0x3
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#define ADT7316_LSB_IN_TEMP_MASK 0x3
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#define ADT7316_LSB_VDD_MASK 0xC
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#define ADT7316_LSB_VDD_OFFSET 2
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#define ADT7316_LSB_EX_TEMP_AIN 0x4
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#define ADT7316_LSB_EX_TEMP_MASK 0x3
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#define ADT7516_LSB_AIN_SHIFT 2
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#define ADT7316_AD_MSB_DATA_BASE 0x6
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#define ADT7316_AD_MSB_DATA_REGS 3
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#define ADT7516_AD_MSB_DATA_REGS 6
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#define ADT7316_MSB_VDD 0x6
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#define ADT7316_MSB_IN_TEMP 0x7
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#define ADT7316_MSB_EX_TEMP 0x8
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#define ADT7516_MSB_AIN1 0x8
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#define ADT7516_MSB_AIN2 0x9
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#define ADT7516_MSB_AIN3 0xA
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#define ADT7516_MSB_AIN4 0xB
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#define ADT7316_DA_DATA_BASE 0x10
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#define ADT7316_DA_10_BIT_LSB_SHIFT 6
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#define ADT7316_DA_12_BIT_LSB_SHIFT 4
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#define ADT7316_DA_MSB_DATA_REGS 4
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#define ADT7316_LSB_DAC_A 0x10
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#define ADT7316_MSB_DAC_A 0x11
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#define ADT7316_LSB_DAC_B 0x12
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#define ADT7316_MSB_DAC_B 0x13
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#define ADT7316_LSB_DAC_C 0x14
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#define ADT7316_MSB_DAC_C 0x15
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#define ADT7316_LSB_DAC_D 0x16
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#define ADT7316_MSB_DAC_D 0x17
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#define ADT7316_CONFIG1 0x18
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#define ADT7316_CONFIG2 0x19
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#define ADT7316_CONFIG3 0x1A
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#define ADT7316_DAC_CONFIG 0x1B
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#define ADT7316_LDAC_CONFIG 0x1C
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#define ADT7316_INT_MASK1 0x1D
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#define ADT7316_INT_MASK2 0x1E
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#define ADT7316_IN_TEMP_OFFSET 0x1F
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#define ADT7316_EX_TEMP_OFFSET 0x20
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#define ADT7316_IN_ANALOG_TEMP_OFFSET 0x21
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#define ADT7316_EX_ANALOG_TEMP_OFFSET 0x22
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#define ADT7316_VDD_HIGH 0x23
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#define ADT7316_VDD_LOW 0x24
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#define ADT7316_IN_TEMP_HIGH 0x25
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#define ADT7316_IN_TEMP_LOW 0x26
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#define ADT7316_EX_TEMP_HIGH 0x27
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#define ADT7316_EX_TEMP_LOW 0x28
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#define ADT7516_AIN2_HIGH 0x2B
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#define ADT7516_AIN2_LOW 0x2C
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#define ADT7516_AIN3_HIGH 0x2D
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#define ADT7516_AIN3_LOW 0x2E
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#define ADT7516_AIN4_HIGH 0x2F
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#define ADT7516_AIN4_LOW 0x30
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#define ADT7316_DEVICE_ID 0x4D
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#define ADT7316_MANUFACTURE_ID 0x4E
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#define ADT7316_DEVICE_REV 0x4F
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#define ADT7316_SPI_LOCK_STAT 0x7F
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/*
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* ADT7316 config1
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*/
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#define ADT7316_EN 0x1
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#define ADT7516_SEL_EX_TEMP 0x4
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#define ADT7516_SEL_AIN1_2_EX_TEMP_MASK 0x6
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#define ADT7516_SEL_AIN3 0x8
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#define ADT7316_INT_EN 0x20
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#define ADT7316_INT_POLARITY 0x40
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#define ADT7316_PD 0x80
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/*
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* ADT7316 config2
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*/
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#define ADT7316_AD_SINGLE_CH_MASK 0x3
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#define ADT7516_AD_SINGLE_CH_MASK 0x7
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#define ADT7316_AD_SINGLE_CH_VDD 0
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#define ADT7316_AD_SINGLE_CH_IN 1
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#define ADT7316_AD_SINGLE_CH_EX 2
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#define ADT7516_AD_SINGLE_CH_AIN1 2
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#define ADT7516_AD_SINGLE_CH_AIN2 3
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#define ADT7516_AD_SINGLE_CH_AIN3 4
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#define ADT7516_AD_SINGLE_CH_AIN4 5
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#define ADT7316_AD_SINGLE_CH_MODE 0x10
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#define ADT7316_DISABLE_AVERAGING 0x20
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#define ADT7316_EN_SMBUS_TIMEOUT 0x40
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#define ADT7316_RESET 0x80
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/*
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* ADT7316 config3
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*/
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#define ADT7316_ADCLK_22_5 0x1
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#define ADT7316_DA_HIGH_RESOLUTION 0x2
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#define ADT7316_DA_EN_VIA_DAC_LDAC 0x8
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#define ADT7516_AIN_IN_VREF 0x10
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#define ADT7316_EN_IN_TEMP_PROP_DACA 0x20
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#define ADT7316_EN_EX_TEMP_PROP_DACB 0x40
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/*
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* ADT7316 DAC config
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*/
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#define ADT7316_DA_2VREF_CH_MASK 0xF
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#define ADT7316_DA_EN_MODE_MASK 0x30
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#define ADT7316_DA_EN_MODE_SHIFT 4
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#define ADT7316_DA_EN_MODE_SINGLE 0x00
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#define ADT7316_DA_EN_MODE_AB_CD 0x10
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#define ADT7316_DA_EN_MODE_ABCD 0x20
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#define ADT7316_DA_EN_MODE_LDAC 0x30
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#define ADT7316_VREF_BYPASS_DAC_AB 0x40
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#define ADT7316_VREF_BYPASS_DAC_CD 0x80
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/*
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* ADT7316 LDAC config
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*/
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#define ADT7316_LDAC_EN_DA_MASK 0xF
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#define ADT7316_DAC_IN_VREF 0x10
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#define ADT7516_DAC_AB_IN_VREF 0x10
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#define ADT7516_DAC_CD_IN_VREF 0x20
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#define ADT7516_DAC_IN_VREF_OFFSET 4
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#define ADT7516_DAC_IN_VREF_MASK 0x30
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/*
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* ADT7316 INT_MASK2
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*/
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#define ADT7316_INT_MASK2_VDD 0x10
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/*
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* ADT7316 value masks
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*/
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#define ADT7316_VALUE_MASK 0xfff
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#define ADT7316_T_VALUE_SIGN 0x400
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#define ADT7316_T_VALUE_FLOAT_OFFSET 2
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#define ADT7316_T_VALUE_FLOAT_MASK 0x2
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/*
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* Chip ID
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*/
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#define ID_ADT7316 0x1
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#define ID_ADT7317 0x2
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#define ID_ADT7318 0x3
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#define ID_ADT7516 0x11
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#define ID_ADT7517 0x12
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#define ID_ADT7519 0x14
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#define ID_FAMILY_MASK 0xF0
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#define ID_ADT73XX 0x0
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#define ID_ADT75XX 0x10
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/*
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* struct adt7316_chip_info - chip specific information
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*/
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struct adt7316_chip_info {
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struct adt7316_bus bus;
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struct gpio_desc *ldac_pin;
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u16 int_mask; /* 0x2f */
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u8 config1;
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u8 config2;
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u8 config3;
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u8 dac_config; /* DAC config */
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u8 ldac_config; /* LDAC config */
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u8 dac_bits; /* 8, 10, 12 */
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u8 id; /* chip id */
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};
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/*
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* Logic interrupt mask for user application to enable
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* interrupts.
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*/
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#define ADT7316_IN_TEMP_HIGH_INT_MASK 0x1
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#define ADT7316_IN_TEMP_LOW_INT_MASK 0x2
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#define ADT7316_EX_TEMP_HIGH_INT_MASK 0x4
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#define ADT7316_EX_TEMP_LOW_INT_MASK 0x8
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#define ADT7316_EX_TEMP_FAULT_INT_MASK 0x10
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#define ADT7516_AIN1_INT_MASK 0x4
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#define ADT7516_AIN2_INT_MASK 0x20
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#define ADT7516_AIN3_INT_MASK 0x40
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#define ADT7516_AIN4_INT_MASK 0x80
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#define ADT7316_VDD_INT_MASK 0x100
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#define ADT7316_TEMP_INT_MASK 0x1F
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#define ADT7516_AIN_INT_MASK 0xE0
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#define ADT7316_TEMP_AIN_INT_MASK \
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(ADT7316_TEMP_INT_MASK)
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/*
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* struct adt7316_chip_info - chip specific information
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*/
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struct adt7316_limit_regs {
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u16 data_high;
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u16 data_low;
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};
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static ssize_t adt7316_show_enabled(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct iio_dev *dev_info = dev_to_iio_dev(dev);
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struct adt7316_chip_info *chip = iio_priv(dev_info);
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return sprintf(buf, "%d\n", !!(chip->config1 & ADT7316_EN));
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}
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static ssize_t _adt7316_store_enabled(struct adt7316_chip_info *chip,
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int enable)
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{
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u8 config1;
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int ret;
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if (enable)
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config1 = chip->config1 | ADT7316_EN;
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else
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config1 = chip->config1 & ~ADT7316_EN;
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ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG1, config1);
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if (ret)
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return -EIO;
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chip->config1 = config1;
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return ret;
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}
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static ssize_t adt7316_store_enabled(struct device *dev,
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struct device_attribute *attr,
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const char *buf,
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size_t len)
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{
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struct iio_dev *dev_info = dev_to_iio_dev(dev);
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struct adt7316_chip_info *chip = iio_priv(dev_info);
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int enable;
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if (buf[0] == '1')
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enable = 1;
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else
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enable = 0;
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if (_adt7316_store_enabled(chip, enable) < 0)
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return -EIO;
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return len;
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}
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static IIO_DEVICE_ATTR(enabled, 0644,
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adt7316_show_enabled,
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adt7316_store_enabled,
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0);
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static ssize_t adt7316_show_select_ex_temp(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct iio_dev *dev_info = dev_to_iio_dev(dev);
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struct adt7316_chip_info *chip = iio_priv(dev_info);
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if ((chip->id & ID_FAMILY_MASK) != ID_ADT75XX)
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return -EPERM;
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return sprintf(buf, "%d\n", !!(chip->config1 & ADT7516_SEL_EX_TEMP));
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}
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static ssize_t adt7316_store_select_ex_temp(struct device *dev,
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struct device_attribute *attr,
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const char *buf,
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size_t len)
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{
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struct iio_dev *dev_info = dev_to_iio_dev(dev);
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struct adt7316_chip_info *chip = iio_priv(dev_info);
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u8 config1;
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int ret;
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if ((chip->id & ID_FAMILY_MASK) != ID_ADT75XX)
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return -EPERM;
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config1 = chip->config1 & (~ADT7516_SEL_EX_TEMP);
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if (buf[0] == '1')
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config1 |= ADT7516_SEL_EX_TEMP;
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ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG1, config1);
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if (ret)
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return -EIO;
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chip->config1 = config1;
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return len;
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}
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static IIO_DEVICE_ATTR(select_ex_temp, 0644,
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adt7316_show_select_ex_temp,
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adt7316_store_select_ex_temp,
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0);
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static ssize_t adt7316_show_mode(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct iio_dev *dev_info = dev_to_iio_dev(dev);
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struct adt7316_chip_info *chip = iio_priv(dev_info);
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if (chip->config2 & ADT7316_AD_SINGLE_CH_MODE)
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return sprintf(buf, "single_channel\n");
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return sprintf(buf, "round_robin\n");
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}
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static ssize_t adt7316_store_mode(struct device *dev,
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struct device_attribute *attr,
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const char *buf,
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size_t len)
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{
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struct iio_dev *dev_info = dev_to_iio_dev(dev);
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struct adt7316_chip_info *chip = iio_priv(dev_info);
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u8 config2;
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int ret;
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config2 = chip->config2 & (~ADT7316_AD_SINGLE_CH_MODE);
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if (!memcmp(buf, "single_channel", 14))
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config2 |= ADT7316_AD_SINGLE_CH_MODE;
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ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG2, config2);
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if (ret)
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return -EIO;
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chip->config2 = config2;
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return len;
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}
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static IIO_DEVICE_ATTR(mode, 0644,
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adt7316_show_mode,
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adt7316_store_mode,
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0);
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static ssize_t adt7316_show_all_modes(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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return sprintf(buf, "single_channel\nround_robin\n");
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}
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static IIO_DEVICE_ATTR(all_modes, 0444, adt7316_show_all_modes, NULL, 0);
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static ssize_t adt7316_show_ad_channel(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct iio_dev *dev_info = dev_to_iio_dev(dev);
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struct adt7316_chip_info *chip = iio_priv(dev_info);
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if (!(chip->config2 & ADT7316_AD_SINGLE_CH_MODE))
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return -EPERM;
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switch (chip->config2 & ADT7516_AD_SINGLE_CH_MASK) {
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case ADT7316_AD_SINGLE_CH_VDD:
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return sprintf(buf, "0 - VDD\n");
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case ADT7316_AD_SINGLE_CH_IN:
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return sprintf(buf, "1 - Internal Temperature\n");
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case ADT7316_AD_SINGLE_CH_EX:
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if (((chip->id & ID_FAMILY_MASK) == ID_ADT75XX) &&
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(chip->config1 & ADT7516_SEL_AIN1_2_EX_TEMP_MASK) == 0)
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return sprintf(buf, "2 - AIN1\n");
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return sprintf(buf, "2 - External Temperature\n");
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case ADT7516_AD_SINGLE_CH_AIN2:
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if ((chip->config1 & ADT7516_SEL_AIN1_2_EX_TEMP_MASK) == 0)
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return sprintf(buf, "3 - AIN2\n");
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return sprintf(buf, "N/A\n");
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case ADT7516_AD_SINGLE_CH_AIN3:
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if (chip->config1 & ADT7516_SEL_AIN3)
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return sprintf(buf, "4 - AIN3\n");
|
|
return sprintf(buf, "N/A\n");
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case ADT7516_AD_SINGLE_CH_AIN4:
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return sprintf(buf, "5 - AIN4\n");
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default:
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return sprintf(buf, "N/A\n");
|
}
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}
|
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static ssize_t adt7316_store_ad_channel(struct device *dev,
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struct device_attribute *attr,
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const char *buf,
|
size_t len)
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{
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struct iio_dev *dev_info = dev_to_iio_dev(dev);
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struct adt7316_chip_info *chip = iio_priv(dev_info);
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u8 config2;
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u8 data;
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int ret;
|
|
if (!(chip->config2 & ADT7316_AD_SINGLE_CH_MODE))
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return -EPERM;
|
|
ret = kstrtou8(buf, 10, &data);
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if (ret)
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return -EINVAL;
|
|
if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX) {
|
if (data > 5)
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return -EINVAL;
|
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config2 = chip->config2 & (~ADT7516_AD_SINGLE_CH_MASK);
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} else {
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if (data > 2)
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return -EINVAL;
|
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config2 = chip->config2 & (~ADT7316_AD_SINGLE_CH_MASK);
|
}
|
|
config2 |= data;
|
|
ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG2, config2);
|
if (ret)
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return -EIO;
|
|
chip->config2 = config2;
|
|
return len;
|
}
|
|
static IIO_DEVICE_ATTR(ad_channel, 0644,
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
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 AIN1\n"
|
"3 - AIN2\n4 - AIN3\n5 - AIN4\n");
|
return sprintf(buf, "0 - VDD\n1 - Internal Temperature\n"
|
"2 - External Temperature\n");
|
}
|
|
static IIO_DEVICE_ATTR(all_ad_channels, 0444,
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
u8 config2;
|
int ret;
|
|
config2 = chip->config2 & (~ADT7316_DISABLE_AVERAGING);
|
if (buf[0] == '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, 0644,
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
u8 config2;
|
int ret;
|
|
config2 = chip->config2 & (~ADT7316_EN_SMBUS_TIMEOUT);
|
if (buf[0] == '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, 0644,
|
adt7316_show_enable_smbus_timeout,
|
adt7316_store_enable_smbus_timeout,
|
0);
|
|
static ssize_t adt7316_show_powerdown(struct device *dev,
|
struct device_attribute *attr,
|
char *buf)
|
{
|
struct iio_dev *dev_info = dev_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
u8 config1;
|
int ret;
|
|
config1 = chip->config1 & (~ADT7316_PD);
|
if (buf[0] == '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, 0644,
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
u8 config3;
|
int ret;
|
|
config3 = chip->config3 & (~ADT7316_ADCLK_22_5);
|
if (buf[0] == '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, 0644,
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
if (chip->config3 & ADT7316_DA_HIGH_RESOLUTION) {
|
if (chip->id != ID_ADT7318 && chip->id != ID_ADT7519)
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
u8 config3;
|
int ret;
|
|
if (chip->id == ID_ADT7318 || chip->id == ID_ADT7519)
|
return -EPERM;
|
|
config3 = chip->config3 & (~ADT7316_DA_HIGH_RESOLUTION);
|
if (buf[0] == '1')
|
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, 0644,
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
u8 config3;
|
int ret;
|
|
if ((chip->id & ID_FAMILY_MASK) != ID_ADT75XX)
|
return -EPERM;
|
|
if (buf[0] != '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, 0644,
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
u8 config3;
|
int ret;
|
|
config3 = chip->config3 & (~ADT7316_EN_IN_TEMP_PROP_DACA);
|
if (buf[0] == '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, 0644,
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
u8 config3;
|
int ret;
|
|
config3 = chip->config3 & (~ADT7316_EN_EX_TEMP_PROP_DACB);
|
if (buf[0] == '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, 0644,
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
u8 dac_config;
|
u8 data;
|
int ret;
|
|
ret = kstrtou8(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, 0644,
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
if (!(chip->config3 & ADT7316_DA_EN_VIA_DAC_LDAC))
|
return sprintf(buf, "manual\n");
|
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
u8 dac_config;
|
u8 data;
|
int ret;
|
|
if (!(chip->config3 & ADT7316_DA_EN_VIA_DAC_LDAC))
|
return -EPERM;
|
|
ret = kstrtou8(buf, 10, &data);
|
if (ret || data > (ADT7316_DA_EN_MODE_MASK >> ADT7316_DA_EN_MODE_SHIFT))
|
return -EINVAL;
|
|
dac_config = chip->dac_config & (~ADT7316_DA_EN_MODE_MASK);
|
dac_config |= data << ADT7316_DA_EN_MODE_SHIFT;
|
|
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, 0644,
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
if (chip->config3 & ADT7316_DA_EN_VIA_DAC_LDAC)
|
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");
|
return sprintf(buf, "manual\n");
|
}
|
|
static IIO_DEVICE_ATTR(all_DAC_update_modes, 0444,
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
u8 ldac_config;
|
u8 data;
|
int ret;
|
|
if (chip->config3 & ADT7316_DA_EN_VIA_DAC_LDAC) {
|
if ((chip->dac_config & ADT7316_DA_EN_MODE_MASK) !=
|
ADT7316_DA_EN_MODE_LDAC)
|
return -EPERM;
|
|
ret = kstrtou8(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 {
|
gpiod_set_value(chip->ldac_pin, 0);
|
gpiod_set_value(chip->ldac_pin, 1);
|
}
|
|
return len;
|
}
|
|
static IIO_DEVICE_ATTR(update_DAC, 0644,
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
u8 dac_config;
|
int ret;
|
|
dac_config = chip->dac_config & (~ADT7316_VREF_BYPASS_DAC_AB);
|
if (buf[0] == '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, 0644,
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
u8 dac_config;
|
int ret;
|
|
dac_config = chip->dac_config & (~ADT7316_VREF_BYPASS_DAC_CD);
|
if (buf[0] == '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, 0644,
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX)
|
return sprintf(buf, "0x%x\n",
|
(chip->ldac_config & ADT7516_DAC_IN_VREF_MASK) >>
|
ADT7516_DAC_IN_VREF_OFFSET);
|
return sprintf(buf, "%d\n",
|
!!(chip->ldac_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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
u8 ldac_config;
|
u8 data;
|
int ret;
|
|
if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX) {
|
ret = kstrtou8(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;
|
if (data & 0x2)
|
ldac_config |= ADT7516_DAC_CD_IN_VREF;
|
} else {
|
ret = kstrtou8(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, 0644,
|
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);
|
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
return adt7316_show_ad(chip, ADT7316_AD_SINGLE_CH_VDD, buf);
|
}
|
static IIO_DEVICE_ATTR(VDD, 0444, 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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
return adt7316_show_ad(chip, ADT7316_AD_SINGLE_CH_IN, buf);
|
}
|
|
static IIO_DEVICE_ATTR(in_temp, 0444, 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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
return adt7316_show_ad(chip, ADT7316_AD_SINGLE_CH_EX, buf);
|
}
|
|
static IIO_DEVICE_ATTR(ex_temp_AIN1, 0444, adt7316_show_ex_temp_AIN1,
|
NULL, 0);
|
static IIO_DEVICE_ATTR(ex_temp, 0444, 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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
return adt7316_show_ad(chip, ADT7516_AD_SINGLE_CH_AIN2, buf);
|
}
|
static IIO_DEVICE_ATTR(AIN2, 0444, 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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
return adt7316_show_ad(chip, ADT7516_AD_SINGLE_CH_AIN3, buf);
|
}
|
static IIO_DEVICE_ATTR(AIN3, 0444, 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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
return adt7316_show_ad(chip, ADT7516_AD_SINGLE_CH_AIN4, buf);
|
}
|
static IIO_DEVICE_ATTR(AIN4, 0444, 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)
|
{
|
int data;
|
u8 val;
|
int ret;
|
|
ret = kstrtoint(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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
return adt7316_store_temp_offset(chip, ADT7316_IN_TEMP_OFFSET, buf,
|
len);
|
}
|
|
static IIO_DEVICE_ATTR(in_temp_offset, 0644,
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
return adt7316_store_temp_offset(chip, ADT7316_EX_TEMP_OFFSET, buf,
|
len);
|
}
|
|
static IIO_DEVICE_ATTR(ex_temp_offset, 0644,
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
return adt7316_store_temp_offset(chip,
|
ADT7316_IN_ANALOG_TEMP_OFFSET, buf, len);
|
}
|
|
static IIO_DEVICE_ATTR(in_analog_temp_offset, 0644,
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
return adt7316_store_temp_offset(chip,
|
ADT7316_EX_ANALOG_TEMP_OFFSET, buf, len);
|
}
|
|
static IIO_DEVICE_ATTR(ex_analog_temp_offset, 0644,
|
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 = 0;
|
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;
|
|
if (chip->dac_bits == 12)
|
data = lsb >> ADT7316_DA_12_BIT_LSB_SHIFT;
|
else if (chip->dac_bits == 10)
|
data = lsb >> ADT7316_DA_10_BIT_LSB_SHIFT;
|
data |= msb << offset;
|
|
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, lsb_reg, offset;
|
u16 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 = kstrtou16(buf, 10, &data);
|
if (ret || data >= (1 << chip->dac_bits))
|
return -EINVAL;
|
|
if (chip->dac_bits > 8) {
|
lsb = data & ((1 << offset) - 1);
|
if (chip->dac_bits == 12)
|
lsb_reg = lsb << ADT7316_DA_12_BIT_LSB_SHIFT;
|
else
|
lsb_reg = lsb << ADT7316_DA_10_BIT_LSB_SHIFT;
|
ret = chip->bus.write(chip->bus.client,
|
ADT7316_DA_DATA_BASE + channel * 2, lsb_reg);
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
return adt7316_store_DAC(chip, 0, buf, len);
|
}
|
|
static IIO_DEVICE_ATTR(DAC_A, 0644, 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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
return adt7316_store_DAC(chip, 1, buf, len);
|
}
|
|
static IIO_DEVICE_ATTR(DAC_B, 0644, 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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
return adt7316_store_DAC(chip, 2, buf, len);
|
}
|
|
static IIO_DEVICE_ATTR(DAC_C, 0644, 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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
return adt7316_store_DAC(chip, 3, buf, len);
|
}
|
|
static IIO_DEVICE_ATTR(DAC_D, 0644, 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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
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, 0444, 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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
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, 0444,
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
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, 0444, 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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
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");
|
|
return sprintf(buf, "i2c\n");
|
}
|
|
static IIO_DEVICE_ATTR(bus_type, 0444, adt7316_show_bus_type, 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_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,
|
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_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_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,
|
NULL,
|
};
|
|
static const struct attribute_group adt7516_attribute_group = {
|
.attrs = adt7516_attributes,
|
};
|
|
static irqreturn_t adt7316_event_handler(int irq, void *private)
|
{
|
struct iio_dev *indio_dev = private;
|
struct adt7316_chip_info *chip = iio_priv(indio_dev);
|
u8 stat1, stat2;
|
int ret;
|
s64 time;
|
|
ret = chip->bus.read(chip->bus.client, ADT7316_INT_STAT1, &stat1);
|
if (!ret) {
|
if ((chip->id & ID_FAMILY_MASK) != ID_ADT75XX)
|
stat1 &= 0x1F;
|
|
time = iio_get_time_ns(indio_dev);
|
if (stat1 & BIT(0))
|
iio_push_event(indio_dev,
|
IIO_UNMOD_EVENT_CODE(IIO_TEMP, 0,
|
IIO_EV_TYPE_THRESH,
|
IIO_EV_DIR_RISING),
|
time);
|
if (stat1 & BIT(1))
|
iio_push_event(indio_dev,
|
IIO_UNMOD_EVENT_CODE(IIO_TEMP, 0,
|
IIO_EV_TYPE_THRESH,
|
IIO_EV_DIR_FALLING),
|
time);
|
if (stat1 & BIT(2))
|
iio_push_event(indio_dev,
|
IIO_UNMOD_EVENT_CODE(IIO_TEMP, 1,
|
IIO_EV_TYPE_THRESH,
|
IIO_EV_DIR_RISING),
|
time);
|
if (stat1 & BIT(3))
|
iio_push_event(indio_dev,
|
IIO_UNMOD_EVENT_CODE(IIO_TEMP, 1,
|
IIO_EV_TYPE_THRESH,
|
IIO_EV_DIR_FALLING),
|
time);
|
if (stat1 & BIT(5))
|
iio_push_event(indio_dev,
|
IIO_UNMOD_EVENT_CODE(IIO_VOLTAGE, 1,
|
IIO_EV_TYPE_THRESH,
|
IIO_EV_DIR_EITHER),
|
time);
|
if (stat1 & BIT(6))
|
iio_push_event(indio_dev,
|
IIO_UNMOD_EVENT_CODE(IIO_VOLTAGE, 2,
|
IIO_EV_TYPE_THRESH,
|
IIO_EV_DIR_EITHER),
|
time);
|
if (stat1 & BIT(7))
|
iio_push_event(indio_dev,
|
IIO_UNMOD_EVENT_CODE(IIO_VOLTAGE, 3,
|
IIO_EV_TYPE_THRESH,
|
IIO_EV_DIR_EITHER),
|
time);
|
}
|
ret = chip->bus.read(chip->bus.client, ADT7316_INT_STAT2, &stat2);
|
if (!ret) {
|
if (stat2 & ADT7316_INT_MASK2_VDD)
|
iio_push_event(indio_dev,
|
IIO_UNMOD_EVENT_CODE(IIO_VOLTAGE,
|
0,
|
IIO_EV_TYPE_THRESH,
|
IIO_EV_DIR_RISING),
|
iio_get_time_ns(indio_dev));
|
}
|
|
return IRQ_HANDLED;
|
}
|
|
static int adt7316_setup_irq(struct iio_dev *indio_dev)
|
{
|
struct adt7316_chip_info *chip = iio_priv(indio_dev);
|
int irq_type, ret;
|
|
irq_type = irqd_get_trigger_type(irq_get_irq_data(chip->bus.irq));
|
|
switch (irq_type) {
|
case IRQF_TRIGGER_HIGH:
|
case IRQF_TRIGGER_RISING:
|
break;
|
case IRQF_TRIGGER_LOW:
|
case IRQF_TRIGGER_FALLING:
|
break;
|
default:
|
dev_info(&indio_dev->dev, "mode %d unsupported, using IRQF_TRIGGER_LOW\n",
|
irq_type);
|
irq_type = IRQF_TRIGGER_LOW;
|
break;
|
}
|
|
ret = devm_request_threaded_irq(&indio_dev->dev, chip->bus.irq,
|
NULL, adt7316_event_handler,
|
irq_type | IRQF_ONESHOT,
|
indio_dev->name, indio_dev);
|
if (ret) {
|
dev_err(&indio_dev->dev, "failed to request irq %d\n",
|
chip->bus.irq);
|
return ret;
|
}
|
|
if (irq_type & IRQF_TRIGGER_HIGH)
|
chip->config1 |= ADT7316_INT_POLARITY;
|
|
return 0;
|
}
|
|
/*
|
* 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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
u16 data;
|
int ret;
|
u8 mask;
|
|
ret = kstrtou16(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,
|
char *buf)
|
{
|
struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
|
struct iio_dev *dev_info = dev_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
u8 val;
|
int data;
|
int ret;
|
|
if ((chip->id & ID_FAMILY_MASK) == ID_ADT73XX &&
|
this_attr->address > ADT7316_EX_TEMP_LOW)
|
return -EPERM;
|
|
ret = chip->bus.read(chip->bus.client, this_attr->address, &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,
|
const char *buf,
|
size_t len)
|
{
|
struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
|
struct iio_dev *dev_info = dev_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
int data;
|
u8 val;
|
int ret;
|
|
if ((chip->id & ID_FAMILY_MASK) == ID_ADT73XX &&
|
this_attr->address > ADT7316_EX_TEMP_LOW)
|
return -EPERM;
|
|
ret = kstrtoint(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, this_attr->address, val);
|
if (ret)
|
return -EIO;
|
|
return len;
|
}
|
|
static ssize_t adt7316_show_int_enabled(struct device *dev,
|
struct device_attribute *attr,
|
char *buf)
|
{
|
struct iio_dev *dev_info = dev_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
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_to_iio_dev(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
u8 config1;
|
int ret;
|
|
config1 = chip->config1 & (~ADT7316_INT_EN);
|
if (buf[0] == '1')
|
config1 |= ADT7316_INT_EN;
|
|
ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG1, config1);
|
if (ret)
|
return -EIO;
|
|
chip->config1 = config1;
|
|
return len;
|
}
|
|
static IIO_DEVICE_ATTR(int_mask,
|
0644,
|
adt7316_show_int_mask, adt7316_set_int_mask,
|
0);
|
static IIO_DEVICE_ATTR(in_temp_high_value,
|
0644,
|
adt7316_show_ad_bound, adt7316_set_ad_bound,
|
ADT7316_IN_TEMP_HIGH);
|
static IIO_DEVICE_ATTR(in_temp_low_value,
|
0644,
|
adt7316_show_ad_bound, adt7316_set_ad_bound,
|
ADT7316_IN_TEMP_LOW);
|
static IIO_DEVICE_ATTR(ex_temp_high_value,
|
0644,
|
adt7316_show_ad_bound, adt7316_set_ad_bound,
|
ADT7316_EX_TEMP_HIGH);
|
static IIO_DEVICE_ATTR(ex_temp_low_value,
|
0644,
|
adt7316_show_ad_bound, adt7316_set_ad_bound,
|
ADT7316_EX_TEMP_LOW);
|
|
/* NASTY duplication to be fixed */
|
static IIO_DEVICE_ATTR(ex_temp_ain1_high_value,
|
0644,
|
adt7316_show_ad_bound, adt7316_set_ad_bound,
|
ADT7316_EX_TEMP_HIGH);
|
static IIO_DEVICE_ATTR(ex_temp_ain1_low_value,
|
0644,
|
adt7316_show_ad_bound, adt7316_set_ad_bound,
|
ADT7316_EX_TEMP_LOW);
|
static IIO_DEVICE_ATTR(ain2_high_value,
|
0644,
|
adt7316_show_ad_bound, adt7316_set_ad_bound,
|
ADT7516_AIN2_HIGH);
|
static IIO_DEVICE_ATTR(ain2_low_value,
|
0644,
|
adt7316_show_ad_bound, adt7316_set_ad_bound,
|
ADT7516_AIN2_LOW);
|
static IIO_DEVICE_ATTR(ain3_high_value,
|
0644,
|
adt7316_show_ad_bound, adt7316_set_ad_bound,
|
ADT7516_AIN3_HIGH);
|
static IIO_DEVICE_ATTR(ain3_low_value,
|
0644,
|
adt7316_show_ad_bound, adt7316_set_ad_bound,
|
ADT7516_AIN3_LOW);
|
static IIO_DEVICE_ATTR(ain4_high_value,
|
0644,
|
adt7316_show_ad_bound, adt7316_set_ad_bound,
|
ADT7516_AIN4_HIGH);
|
static IIO_DEVICE_ATTR(ain4_low_value,
|
0644,
|
adt7316_show_ad_bound, adt7316_set_ad_bound,
|
ADT7516_AIN4_LOW);
|
static IIO_DEVICE_ATTR(int_enabled,
|
0644,
|
adt7316_show_int_enabled,
|
adt7316_set_int_enabled, 0);
|
|
static struct attribute *adt7316_event_attributes[] = {
|
&iio_dev_attr_int_mask.dev_attr.attr,
|
&iio_dev_attr_in_temp_high_value.dev_attr.attr,
|
&iio_dev_attr_in_temp_low_value.dev_attr.attr,
|
&iio_dev_attr_ex_temp_high_value.dev_attr.attr,
|
&iio_dev_attr_ex_temp_low_value.dev_attr.attr,
|
&iio_dev_attr_int_enabled.dev_attr.attr,
|
NULL,
|
};
|
|
static const struct attribute_group adt7316_event_attribute_group = {
|
.attrs = adt7316_event_attributes,
|
.name = "events",
|
};
|
|
static struct attribute *adt7516_event_attributes[] = {
|
&iio_dev_attr_int_mask.dev_attr.attr,
|
&iio_dev_attr_in_temp_high_value.dev_attr.attr,
|
&iio_dev_attr_in_temp_low_value.dev_attr.attr,
|
&iio_dev_attr_ex_temp_ain1_high_value.dev_attr.attr,
|
&iio_dev_attr_ex_temp_ain1_low_value.dev_attr.attr,
|
&iio_dev_attr_ain2_high_value.dev_attr.attr,
|
&iio_dev_attr_ain2_low_value.dev_attr.attr,
|
&iio_dev_attr_ain3_high_value.dev_attr.attr,
|
&iio_dev_attr_ain3_low_value.dev_attr.attr,
|
&iio_dev_attr_ain4_high_value.dev_attr.attr,
|
&iio_dev_attr_ain4_low_value.dev_attr.attr,
|
&iio_dev_attr_int_enabled.dev_attr.attr,
|
NULL,
|
};
|
|
static const struct attribute_group adt7516_event_attribute_group = {
|
.attrs = adt7516_event_attributes,
|
.name = "events",
|
};
|
|
#ifdef CONFIG_PM_SLEEP
|
static int adt7316_disable(struct device *dev)
|
{
|
struct iio_dev *dev_info = dev_get_drvdata(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
return _adt7316_store_enabled(chip, 0);
|
}
|
|
static int adt7316_enable(struct device *dev)
|
{
|
struct iio_dev *dev_info = dev_get_drvdata(dev);
|
struct adt7316_chip_info *chip = iio_priv(dev_info);
|
|
return _adt7316_store_enabled(chip, 1);
|
}
|
EXPORT_SYMBOL_GPL(adt7316_pm_ops);
|
SIMPLE_DEV_PM_OPS(adt7316_pm_ops, adt7316_disable, adt7316_enable);
|
#endif
|
|
static const struct iio_info adt7316_info = {
|
.attrs = &adt7316_attribute_group,
|
.event_attrs = &adt7316_event_attribute_group,
|
};
|
|
static const struct iio_info adt7516_info = {
|
.attrs = &adt7516_attribute_group,
|
.event_attrs = &adt7516_event_attribute_group,
|
};
|
|
/*
|
* device probe and remove
|
*/
|
int adt7316_probe(struct device *dev, struct adt7316_bus *bus,
|
const char *name)
|
{
|
struct adt7316_chip_info *chip;
|
struct iio_dev *indio_dev;
|
int ret;
|
|
indio_dev = devm_iio_device_alloc(dev, sizeof(*chip));
|
if (!indio_dev)
|
return -ENOMEM;
|
chip = iio_priv(indio_dev);
|
/* this is only used for device removal purposes */
|
dev_set_drvdata(dev, indio_dev);
|
|
chip->bus = *bus;
|
|
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;
|
|
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
|
chip->dac_bits = 8;
|
|
chip->ldac_pin = devm_gpiod_get_optional(dev, "adi,ldac",
|
GPIOD_OUT_LOW);
|
if (IS_ERR(chip->ldac_pin)) {
|
ret = PTR_ERR(chip->ldac_pin);
|
dev_err(dev, "Failed to request ldac GPIO: %d\n", ret);
|
return ret;
|
}
|
|
if (!chip->ldac_pin) {
|
chip->config3 |= ADT7316_DA_EN_VIA_DAC_LDAC;
|
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;
|
|
if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX)
|
indio_dev->info = &adt7516_info;
|
else
|
indio_dev->info = &adt7316_info;
|
indio_dev->name = name;
|
indio_dev->modes = INDIO_DIRECT_MODE;
|
|
if (chip->bus.irq > 0) {
|
ret = adt7316_setup_irq(indio_dev);
|
if (ret)
|
return ret;
|
}
|
|
ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG1, chip->config1);
|
if (ret)
|
return -EIO;
|
|
ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG3, chip->config3);
|
if (ret)
|
return -EIO;
|
|
ret = devm_iio_device_register(dev, indio_dev);
|
if (ret)
|
return ret;
|
|
dev_info(dev, "%s temperature sensor, ADC and DAC registered.\n",
|
indio_dev->name);
|
|
return 0;
|
}
|
EXPORT_SYMBOL(adt7316_probe);
|
|
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");
|
