Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * adm1029.c - Part of lm_sensors, Linux kernel modules for hardware monitoring
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (C) 2006 Corentin LABBE <clabbe.montjoie@gmail.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  * Based on LM83 Driver by Jean Delvare <jdelvare@suse.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  * Give only processor, motherboard temperatures and fan tachs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)  * Very rare chip please let me know if you use it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12)  * http://www.analog.com/UploadedFiles/Data_Sheets/ADM1029.pdf
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <linux/jiffies.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <linux/hwmon-sysfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include <linux/hwmon.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #include <linux/mutex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26)  * Addresses to scan
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) static const unsigned short normal_i2c[] = { 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 						0x2e, 0x2f, I2C_CLIENT_END
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34)  * The ADM1029 registers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35)  * Manufacturer ID is 0x41 for Analog Devices
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) #define ADM1029_REG_MAN_ID			0x0D
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) #define ADM1029_REG_CHIP_ID			0x0E
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) #define ADM1029_REG_CONFIG			0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) #define ADM1029_REG_NB_FAN_SUPPORT		0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) #define ADM1029_REG_TEMP_DEVICES_INSTALLED	0x06
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) #define ADM1029_REG_LOCAL_TEMP			0xA0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) #define ADM1029_REG_REMOTE1_TEMP		0xA1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) #define ADM1029_REG_REMOTE2_TEMP		0xA2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) #define ADM1029_REG_LOCAL_TEMP_HIGH		0x90
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) #define ADM1029_REG_REMOTE1_TEMP_HIGH		0x91
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) #define ADM1029_REG_REMOTE2_TEMP_HIGH		0x92
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) #define ADM1029_REG_LOCAL_TEMP_LOW		0x98
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) #define ADM1029_REG_REMOTE1_TEMP_LOW		0x99
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) #define ADM1029_REG_REMOTE2_TEMP_LOW		0x9A
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) #define ADM1029_REG_FAN1			0x70
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) #define ADM1029_REG_FAN2			0x71
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) #define ADM1029_REG_FAN1_MIN			0x78
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) #define ADM1029_REG_FAN2_MIN			0x79
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) #define ADM1029_REG_FAN1_CONFIG			0x68
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) #define ADM1029_REG_FAN2_CONFIG			0x69
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) #define TEMP_FROM_REG(val)	((val) * 1000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) #define DIV_FROM_REG(val)	(1 << (((val) >> 6) - 1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) /* Registers to be checked by adm1029_update_device() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) static const u8 ADM1029_REG_TEMP[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	ADM1029_REG_LOCAL_TEMP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	ADM1029_REG_REMOTE1_TEMP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	ADM1029_REG_REMOTE2_TEMP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	ADM1029_REG_LOCAL_TEMP_HIGH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	ADM1029_REG_REMOTE1_TEMP_HIGH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	ADM1029_REG_REMOTE2_TEMP_HIGH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	ADM1029_REG_LOCAL_TEMP_LOW,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	ADM1029_REG_REMOTE1_TEMP_LOW,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	ADM1029_REG_REMOTE2_TEMP_LOW,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) static const u8 ADM1029_REG_FAN[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	ADM1029_REG_FAN1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	ADM1029_REG_FAN2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	ADM1029_REG_FAN1_MIN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	ADM1029_REG_FAN2_MIN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) static const u8 ADM1029_REG_FAN_DIV[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	ADM1029_REG_FAN1_CONFIG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	ADM1029_REG_FAN2_CONFIG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96)  * Client data (each client gets its own)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) struct adm1029_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	struct i2c_client *client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	struct mutex update_lock; /* protect register access */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	char valid;		/* zero until following fields are valid */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	unsigned long last_updated;	/* in jiffies */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	/* registers values, signed for temperature, unsigned for other stuff */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	s8 temp[ARRAY_SIZE(ADM1029_REG_TEMP)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	u8 fan[ARRAY_SIZE(ADM1029_REG_FAN)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	u8 fan_div[ARRAY_SIZE(ADM1029_REG_FAN_DIV)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)  * function that update the status of the chips (temperature for example)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) static struct adm1029_data *adm1029_update_device(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	struct adm1029_data *data = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	struct i2c_client *client = data->client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	mutex_lock(&data->update_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	 * Use the "cache" Luke, don't recheck values
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	 * if there are already checked not a long time later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	if (time_after(jiffies, data->last_updated + HZ * 2) || !data->valid) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 		int nr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 		dev_dbg(&client->dev, "Updating adm1029 data\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 		for (nr = 0; nr < ARRAY_SIZE(ADM1029_REG_TEMP); nr++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 			data->temp[nr] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 			    i2c_smbus_read_byte_data(client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 						     ADM1029_REG_TEMP[nr]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 		for (nr = 0; nr < ARRAY_SIZE(ADM1029_REG_FAN); nr++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 			data->fan[nr] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 			    i2c_smbus_read_byte_data(client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 						     ADM1029_REG_FAN[nr]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 		for (nr = 0; nr < ARRAY_SIZE(ADM1029_REG_FAN_DIV); nr++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 			data->fan_div[nr] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 			    i2c_smbus_read_byte_data(client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 						     ADM1029_REG_FAN_DIV[nr]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 		data->last_updated = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 		data->valid = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	mutex_unlock(&data->update_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	return data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)  * Sysfs stuff
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) temp_show(struct device *dev, struct device_attribute *devattr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	struct adm1029_data *data = adm1029_update_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[attr->index]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) fan_show(struct device *dev, struct device_attribute *devattr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	struct adm1029_data *data = adm1029_update_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	u16 val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 	if (data->fan[attr->index] == 0 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	    (data->fan_div[attr->index] & 0xC0) == 0 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	    data->fan[attr->index] == 255) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 		return sprintf(buf, "0\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	val = 1880 * 120 / DIV_FROM_REG(data->fan_div[attr->index])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	    / data->fan[attr->index];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	return sprintf(buf, "%d\n", val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) fan_div_show(struct device *dev, struct device_attribute *devattr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	struct adm1029_data *data = adm1029_update_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	if ((data->fan_div[attr->index] & 0xC0) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 		return sprintf(buf, "0\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[attr->index]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) static ssize_t fan_div_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 			     struct device_attribute *devattr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 			     const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	struct adm1029_data *data = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	struct i2c_client *client = data->client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	u8 reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	long val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	int ret = kstrtol(buf, 10, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	mutex_lock(&data->update_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	/*Read actual config */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	reg = i2c_smbus_read_byte_data(client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 				       ADM1029_REG_FAN_DIV[attr->index]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	switch (val) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	case 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 		val = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	case 2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 		val = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	case 4:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 		val = 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 		mutex_unlock(&data->update_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 		dev_err(&client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 			"fan_div value %ld not supported. Choose one of 1, 2 or 4!\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 			val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	/* Update the value */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	reg = (reg & 0x3F) | (val << 6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 	/* Update the cache */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	data->fan_div[attr->index] = reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	/* Write value */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	i2c_smbus_write_byte_data(client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 				  ADM1029_REG_FAN_DIV[attr->index], reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	mutex_unlock(&data->update_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 	return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) /* Access rights on sysfs. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) static SENSOR_DEVICE_ATTR_RO(temp1_input, temp, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) static SENSOR_DEVICE_ATTR_RO(temp2_input, temp, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) static SENSOR_DEVICE_ATTR_RO(temp3_input, temp, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) static SENSOR_DEVICE_ATTR_RO(temp1_max, temp, 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) static SENSOR_DEVICE_ATTR_RO(temp2_max, temp, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) static SENSOR_DEVICE_ATTR_RO(temp3_max, temp, 5);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) static SENSOR_DEVICE_ATTR_RO(temp1_min, temp, 6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) static SENSOR_DEVICE_ATTR_RO(temp2_min, temp, 7);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) static SENSOR_DEVICE_ATTR_RO(temp3_min, temp, 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) static SENSOR_DEVICE_ATTR_RO(fan1_input, fan, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) static SENSOR_DEVICE_ATTR_RO(fan2_input, fan, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) static SENSOR_DEVICE_ATTR_RO(fan1_min, fan, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) static SENSOR_DEVICE_ATTR_RO(fan2_min, fan, 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) static SENSOR_DEVICE_ATTR_RW(fan1_div, fan_div, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) static SENSOR_DEVICE_ATTR_RW(fan2_div, fan_div, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) static struct attribute *adm1029_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 	&sensor_dev_attr_temp1_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	&sensor_dev_attr_temp1_min.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 	&sensor_dev_attr_temp1_max.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	&sensor_dev_attr_temp2_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 	&sensor_dev_attr_temp2_min.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 	&sensor_dev_attr_temp2_max.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 	&sensor_dev_attr_temp3_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 	&sensor_dev_attr_temp3_min.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 	&sensor_dev_attr_temp3_max.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 	&sensor_dev_attr_fan1_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 	&sensor_dev_attr_fan2_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 	&sensor_dev_attr_fan1_min.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 	&sensor_dev_attr_fan2_min.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 	&sensor_dev_attr_fan1_div.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 	&sensor_dev_attr_fan2_div.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 	NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) ATTRIBUTE_GROUPS(adm1029);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)  * Real code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) /* Return 0 if detection is successful, -ENODEV otherwise */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) static int adm1029_detect(struct i2c_client *client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 			  struct i2c_board_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 	struct i2c_adapter *adapter = client->adapter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 	u8 man_id, chip_id, temp_devices_installed, nb_fan_support;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 	 * ADM1029 doesn't have CHIP ID, check just MAN ID
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 	 * For better detection we check also ADM1029_TEMP_DEVICES_INSTALLED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 	 * ADM1029_REG_NB_FAN_SUPPORT and compare it with possible values
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 	 * documented
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 	man_id = i2c_smbus_read_byte_data(client, ADM1029_REG_MAN_ID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 	chip_id = i2c_smbus_read_byte_data(client, ADM1029_REG_CHIP_ID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 	temp_devices_installed = i2c_smbus_read_byte_data(client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 					ADM1029_REG_TEMP_DEVICES_INSTALLED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 	nb_fan_support = i2c_smbus_read_byte_data(client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 						  ADM1029_REG_NB_FAN_SUPPORT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 	/* 0x41 is Analog Devices */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 	if (man_id != 0x41 || (temp_devices_installed & 0xf9) != 0x01 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 	    nb_fan_support != 0x03)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 	if ((chip_id & 0xF0) != 0x00) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 		/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 		 * There are no "official" CHIP ID, so actually
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 		 * we use Major/Minor revision for that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 		 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 		pr_info("Unknown major revision %x, please let us know\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 			chip_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 	strlcpy(info->type, "adm1029", I2C_NAME_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) static int adm1029_init_client(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 	u8 config;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 	config = i2c_smbus_read_byte_data(client, ADM1029_REG_CONFIG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 	if ((config & 0x10) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 		i2c_smbus_write_byte_data(client, ADM1029_REG_CONFIG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 					  config | 0x10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 	/* recheck config */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 	config = i2c_smbus_read_byte_data(client, ADM1029_REG_CONFIG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) 	if ((config & 0x10) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) 		dev_err(&client->dev, "Initialization failed!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) 	return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) static int adm1029_probe(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) 	struct device *dev = &client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) 	struct adm1029_data *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) 	struct device *hwmon_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) 	data = devm_kzalloc(dev, sizeof(struct adm1029_data), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) 	if (!data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) 	data->client = client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 	mutex_init(&data->update_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) 	 * Initialize the ADM1029 chip
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) 	 * Check config register
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) 	if (adm1029_init_client(client) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) 	hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) 							   data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) 							   adm1029_groups);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) 	return PTR_ERR_OR_ZERO(hwmon_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) static const struct i2c_device_id adm1029_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) 	{ "adm1029", 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) 	{ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) MODULE_DEVICE_TABLE(i2c, adm1029_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) static struct i2c_driver adm1029_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) 	.class		= I2C_CLASS_HWMON,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) 	.driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) 		.name = "adm1029",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) 	.probe_new	= adm1029_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) 	.id_table	= adm1029_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) 	.detect		= adm1029_detect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) 	.address_list	= normal_i2c,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) module_i2c_driver(adm1029_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) MODULE_AUTHOR("Corentin LABBE <clabbe.montjoie@gmail.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) MODULE_DESCRIPTION("adm1029 driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) MODULE_LICENSE("GPL v2");