diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/hwmon/asb100.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/hwmon/asb100.c | 1025 |
1 files changed, 0 insertions, 1025 deletions
diff --git a/ANDROID_3.4.5/drivers/hwmon/asb100.c b/ANDROID_3.4.5/drivers/hwmon/asb100.c deleted file mode 100644 index 4b8814de..00000000 --- a/ANDROID_3.4.5/drivers/hwmon/asb100.c +++ /dev/null @@ -1,1025 +0,0 @@ -/* - * asb100.c - Part of lm_sensors, Linux kernel modules for hardware - * monitoring - * - * Copyright (C) 2004 Mark M. Hoffman <mhoffman@lightlink.com> - * - * (derived from w83781d.c) - * - * Copyright (C) 1998 - 2003 Frodo Looijaard <frodol@dds.nl>, - * Philip Edelbrock <phil@netroedge.com>, and - * Mark Studebaker <mdsxyz123@yahoo.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -/* - * This driver supports the hardware sensor chips: Asus ASB100 and - * ASB100-A "BACH". - * - * ASB100-A supports pwm1, while plain ASB100 does not. There is no known - * way for the driver to tell which one is there. - * - * Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA - * asb100 7 3 1 4 0x31 0x0694 yes no - */ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/i2c.h> -#include <linux/hwmon.h> -#include <linux/hwmon-sysfs.h> -#include <linux/hwmon-vid.h> -#include <linux/err.h> -#include <linux/init.h> -#include <linux/jiffies.h> -#include <linux/mutex.h> -#include "lm75.h" - -/* I2C addresses to scan */ -static const unsigned short normal_i2c[] = { 0x2d, I2C_CLIENT_END }; - -static unsigned short force_subclients[4]; -module_param_array(force_subclients, short, NULL, 0); -MODULE_PARM_DESC(force_subclients, "List of subclient addresses: " - "{bus, clientaddr, subclientaddr1, subclientaddr2}"); - -/* Voltage IN registers 0-6 */ -#define ASB100_REG_IN(nr) (0x20 + (nr)) -#define ASB100_REG_IN_MAX(nr) (0x2b + (nr * 2)) -#define ASB100_REG_IN_MIN(nr) (0x2c + (nr * 2)) - -/* FAN IN registers 1-3 */ -#define ASB100_REG_FAN(nr) (0x28 + (nr)) -#define ASB100_REG_FAN_MIN(nr) (0x3b + (nr)) - -/* TEMPERATURE registers 1-4 */ -static const u16 asb100_reg_temp[] = {0, 0x27, 0x150, 0x250, 0x17}; -static const u16 asb100_reg_temp_max[] = {0, 0x39, 0x155, 0x255, 0x18}; -static const u16 asb100_reg_temp_hyst[] = {0, 0x3a, 0x153, 0x253, 0x19}; - -#define ASB100_REG_TEMP(nr) (asb100_reg_temp[nr]) -#define ASB100_REG_TEMP_MAX(nr) (asb100_reg_temp_max[nr]) -#define ASB100_REG_TEMP_HYST(nr) (asb100_reg_temp_hyst[nr]) - -#define ASB100_REG_TEMP2_CONFIG 0x0152 -#define ASB100_REG_TEMP3_CONFIG 0x0252 - - -#define ASB100_REG_CONFIG 0x40 -#define ASB100_REG_ALARM1 0x41 -#define ASB100_REG_ALARM2 0x42 -#define ASB100_REG_SMIM1 0x43 -#define ASB100_REG_SMIM2 0x44 -#define ASB100_REG_VID_FANDIV 0x47 -#define ASB100_REG_I2C_ADDR 0x48 -#define ASB100_REG_CHIPID 0x49 -#define ASB100_REG_I2C_SUBADDR 0x4a -#define ASB100_REG_PIN 0x4b -#define ASB100_REG_IRQ 0x4c -#define ASB100_REG_BANK 0x4e -#define ASB100_REG_CHIPMAN 0x4f - -#define ASB100_REG_WCHIPID 0x58 - -/* bit 7 -> enable, bits 0-3 -> duty cycle */ -#define ASB100_REG_PWM1 0x59 - -/* - * CONVERSIONS - * Rounding and limit checking is only done on the TO_REG variants. - */ - -/* These constants are a guess, consistent w/ w83781d */ -#define ASB100_IN_MIN 0 -#define ASB100_IN_MAX 4080 - -/* - * IN: 1/1000 V (0V to 4.08V) - * REG: 16mV/bit - */ -static u8 IN_TO_REG(unsigned val) -{ - unsigned nval = SENSORS_LIMIT(val, ASB100_IN_MIN, ASB100_IN_MAX); - return (nval + 8) / 16; -} - -static unsigned IN_FROM_REG(u8 reg) -{ - return reg * 16; -} - -static u8 FAN_TO_REG(long rpm, int div) -{ - if (rpm == -1) - return 0; - if (rpm == 0) - return 255; - rpm = SENSORS_LIMIT(rpm, 1, 1000000); - return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254); -} - -static int FAN_FROM_REG(u8 val, int div) -{ - return val == 0 ? -1 : val == 255 ? 0 : 1350000 / (val * div); -} - -/* These constants are a guess, consistent w/ w83781d */ -#define ASB100_TEMP_MIN -128000 -#define ASB100_TEMP_MAX 127000 - -/* - * TEMP: 0.001C/bit (-128C to +127C) - * REG: 1C/bit, two's complement - */ -static u8 TEMP_TO_REG(long temp) -{ - int ntemp = SENSORS_LIMIT(temp, ASB100_TEMP_MIN, ASB100_TEMP_MAX); - ntemp += (ntemp < 0 ? -500 : 500); - return (u8)(ntemp / 1000); -} - -static int TEMP_FROM_REG(u8 reg) -{ - return (s8)reg * 1000; -} - -/* - * PWM: 0 - 255 per sensors documentation - * REG: (6.25% duty cycle per bit) - */ -static u8 ASB100_PWM_TO_REG(int pwm) -{ - pwm = SENSORS_LIMIT(pwm, 0, 255); - return (u8)(pwm / 16); -} - -static int ASB100_PWM_FROM_REG(u8 reg) -{ - return reg * 16; -} - -#define DIV_FROM_REG(val) (1 << (val)) - -/* - * FAN DIV: 1, 2, 4, or 8 (defaults to 2) - * REG: 0, 1, 2, or 3 (respectively) (defaults to 1) - */ -static u8 DIV_TO_REG(long val) -{ - return val == 8 ? 3 : val == 4 ? 2 : val == 1 ? 0 : 1; -} - -/* - * For each registered client, we need to keep some data in memory. That - * data is pointed to by client->data. The structure itself is - * dynamically allocated, at the same time the client itself is allocated. - */ -struct asb100_data { - struct device *hwmon_dev; - struct mutex lock; - - struct mutex update_lock; - unsigned long last_updated; /* In jiffies */ - - /* array of 2 pointers to subclients */ - struct i2c_client *lm75[2]; - - char valid; /* !=0 if following fields are valid */ - u8 in[7]; /* Register value */ - u8 in_max[7]; /* Register value */ - u8 in_min[7]; /* Register value */ - u8 fan[3]; /* Register value */ - u8 fan_min[3]; /* Register value */ - u16 temp[4]; /* Register value (0 and 3 are u8 only) */ - u16 temp_max[4]; /* Register value (0 and 3 are u8 only) */ - u16 temp_hyst[4]; /* Register value (0 and 3 are u8 only) */ - u8 fan_div[3]; /* Register encoding, right justified */ - u8 pwm; /* Register encoding */ - u8 vid; /* Register encoding, combined */ - u32 alarms; /* Register encoding, combined */ - u8 vrm; -}; - -static int asb100_read_value(struct i2c_client *client, u16 reg); -static void asb100_write_value(struct i2c_client *client, u16 reg, u16 val); - -static int asb100_probe(struct i2c_client *client, - const struct i2c_device_id *id); -static int asb100_detect(struct i2c_client *client, - struct i2c_board_info *info); -static int asb100_remove(struct i2c_client *client); -static struct asb100_data *asb100_update_device(struct device *dev); -static void asb100_init_client(struct i2c_client *client); - -static const struct i2c_device_id asb100_id[] = { - { "asb100", 0 }, - { } -}; -MODULE_DEVICE_TABLE(i2c, asb100_id); - -static struct i2c_driver asb100_driver = { - .class = I2C_CLASS_HWMON, - .driver = { - .name = "asb100", - }, - .probe = asb100_probe, - .remove = asb100_remove, - .id_table = asb100_id, - .detect = asb100_detect, - .address_list = normal_i2c, -}; - -/* 7 Voltages */ -#define show_in_reg(reg) \ -static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \ - char *buf) \ -{ \ - int nr = to_sensor_dev_attr(attr)->index; \ - struct asb100_data *data = asb100_update_device(dev); \ - return sprintf(buf, "%d\n", IN_FROM_REG(data->reg[nr])); \ -} - -show_in_reg(in) -show_in_reg(in_min) -show_in_reg(in_max) - -#define set_in_reg(REG, reg) \ -static ssize_t set_in_##reg(struct device *dev, struct device_attribute *attr, \ - const char *buf, size_t count) \ -{ \ - int nr = to_sensor_dev_attr(attr)->index; \ - struct i2c_client *client = to_i2c_client(dev); \ - struct asb100_data *data = i2c_get_clientdata(client); \ - unsigned long val; \ - int err = kstrtoul(buf, 10, &val); \ - if (err) \ - return err; \ - mutex_lock(&data->update_lock); \ - data->in_##reg[nr] = IN_TO_REG(val); \ - asb100_write_value(client, ASB100_REG_IN_##REG(nr), \ - data->in_##reg[nr]); \ - mutex_unlock(&data->update_lock); \ - return count; \ -} - -set_in_reg(MIN, min) -set_in_reg(MAX, max) - -#define sysfs_in(offset) \ -static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ - show_in, NULL, offset); \ -static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ - show_in_min, set_in_min, offset); \ -static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ - show_in_max, set_in_max, offset) - -sysfs_in(0); -sysfs_in(1); -sysfs_in(2); -sysfs_in(3); -sysfs_in(4); -sysfs_in(5); -sysfs_in(6); - -/* 3 Fans */ -static ssize_t show_fan(struct device *dev, struct device_attribute *attr, - char *buf) -{ - int nr = to_sensor_dev_attr(attr)->index; - struct asb100_data *data = asb100_update_device(dev); - return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr], - DIV_FROM_REG(data->fan_div[nr]))); -} - -static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr, - char *buf) -{ - int nr = to_sensor_dev_attr(attr)->index; - struct asb100_data *data = asb100_update_device(dev); - return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr], - DIV_FROM_REG(data->fan_div[nr]))); -} - -static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr, - char *buf) -{ - int nr = to_sensor_dev_attr(attr)->index; - struct asb100_data *data = asb100_update_device(dev); - return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr])); -} - -static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) -{ - int nr = to_sensor_dev_attr(attr)->index; - struct i2c_client *client = to_i2c_client(dev); - struct asb100_data *data = i2c_get_clientdata(client); - unsigned long val; - int err; - - err = kstrtoul(buf, 10, &val); - if (err) - return err; - - mutex_lock(&data->update_lock); - data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); - asb100_write_value(client, ASB100_REG_FAN_MIN(nr), data->fan_min[nr]); - mutex_unlock(&data->update_lock); - return count; -} - -/* - * Note: we save and restore the fan minimum here, because its value is - * determined in part by the fan divisor. This follows the principle of - * least surprise; the user doesn't expect the fan minimum to change just - * because the divisor changed. - */ -static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) -{ - int nr = to_sensor_dev_attr(attr)->index; - struct i2c_client *client = to_i2c_client(dev); - struct asb100_data *data = i2c_get_clientdata(client); - unsigned long min; - int reg; - unsigned long val; - int err; - - err = kstrtoul(buf, 10, &val); - if (err) - return err; - - mutex_lock(&data->update_lock); - - min = FAN_FROM_REG(data->fan_min[nr], - DIV_FROM_REG(data->fan_div[nr])); - data->fan_div[nr] = DIV_TO_REG(val); - - switch (nr) { - case 0: /* fan 1 */ - reg = asb100_read_value(client, ASB100_REG_VID_FANDIV); - reg = (reg & 0xcf) | (data->fan_div[0] << 4); - asb100_write_value(client, ASB100_REG_VID_FANDIV, reg); - break; - - case 1: /* fan 2 */ - reg = asb100_read_value(client, ASB100_REG_VID_FANDIV); - reg = (reg & 0x3f) | (data->fan_div[1] << 6); - asb100_write_value(client, ASB100_REG_VID_FANDIV, reg); - break; - - case 2: /* fan 3 */ - reg = asb100_read_value(client, ASB100_REG_PIN); - reg = (reg & 0x3f) | (data->fan_div[2] << 6); - asb100_write_value(client, ASB100_REG_PIN, reg); - break; - } - - data->fan_min[nr] = - FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); - asb100_write_value(client, ASB100_REG_FAN_MIN(nr), data->fan_min[nr]); - - mutex_unlock(&data->update_lock); - - return count; -} - -#define sysfs_fan(offset) \ -static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ - show_fan, NULL, offset - 1); \ -static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ - show_fan_min, set_fan_min, offset - 1); \ -static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ - show_fan_div, set_fan_div, offset - 1) - -sysfs_fan(1); -sysfs_fan(2); -sysfs_fan(3); - -/* 4 Temp. Sensors */ -static int sprintf_temp_from_reg(u16 reg, char *buf, int nr) -{ - int ret = 0; - - switch (nr) { - case 1: case 2: - ret = sprintf(buf, "%d\n", LM75_TEMP_FROM_REG(reg)); - break; - case 0: case 3: default: - ret = sprintf(buf, "%d\n", TEMP_FROM_REG(reg)); - break; - } - return ret; -} - -#define show_temp_reg(reg) \ -static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \ - char *buf) \ -{ \ - int nr = to_sensor_dev_attr(attr)->index; \ - struct asb100_data *data = asb100_update_device(dev); \ - return sprintf_temp_from_reg(data->reg[nr], buf, nr); \ -} - -show_temp_reg(temp); -show_temp_reg(temp_max); -show_temp_reg(temp_hyst); - -#define set_temp_reg(REG, reg) \ -static ssize_t set_##reg(struct device *dev, struct device_attribute *attr, \ - const char *buf, size_t count) \ -{ \ - int nr = to_sensor_dev_attr(attr)->index; \ - struct i2c_client *client = to_i2c_client(dev); \ - struct asb100_data *data = i2c_get_clientdata(client); \ - long val; \ - int err = kstrtol(buf, 10, &val); \ - if (err) \ - return err; \ - mutex_lock(&data->update_lock); \ - switch (nr) { \ - case 1: case 2: \ - data->reg[nr] = LM75_TEMP_TO_REG(val); \ - break; \ - case 0: case 3: default: \ - data->reg[nr] = TEMP_TO_REG(val); \ - break; \ - } \ - asb100_write_value(client, ASB100_REG_TEMP_##REG(nr+1), \ - data->reg[nr]); \ - mutex_unlock(&data->update_lock); \ - return count; \ -} - -set_temp_reg(MAX, temp_max); -set_temp_reg(HYST, temp_hyst); - -#define sysfs_temp(num) \ -static SENSOR_DEVICE_ATTR(temp##num##_input, S_IRUGO, \ - show_temp, NULL, num - 1); \ -static SENSOR_DEVICE_ATTR(temp##num##_max, S_IRUGO | S_IWUSR, \ - show_temp_max, set_temp_max, num - 1); \ -static SENSOR_DEVICE_ATTR(temp##num##_max_hyst, S_IRUGO | S_IWUSR, \ - show_temp_hyst, set_temp_hyst, num - 1) - -sysfs_temp(1); -sysfs_temp(2); -sysfs_temp(3); -sysfs_temp(4); - -/* VID */ -static ssize_t show_vid(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct asb100_data *data = asb100_update_device(dev); - return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); -} - -static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL); - -/* VRM */ -static ssize_t show_vrm(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct asb100_data *data = dev_get_drvdata(dev); - return sprintf(buf, "%d\n", data->vrm); -} - -static ssize_t set_vrm(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) -{ - struct asb100_data *data = dev_get_drvdata(dev); - unsigned long val; - int err; - - err = kstrtoul(buf, 10, &val); - if (err) - return err; - data->vrm = val; - return count; -} - -/* Alarms */ -static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm); - -static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct asb100_data *data = asb100_update_device(dev); - return sprintf(buf, "%u\n", data->alarms); -} - -static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); - -static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, - char *buf) -{ - int bitnr = to_sensor_dev_attr(attr)->index; - struct asb100_data *data = asb100_update_device(dev); - return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); -} -static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); -static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); -static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); -static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); -static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8); -static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6); -static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7); -static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 11); -static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4); -static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5); -static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 13); - -/* 1 PWM */ -static ssize_t show_pwm1(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct asb100_data *data = asb100_update_device(dev); - return sprintf(buf, "%d\n", ASB100_PWM_FROM_REG(data->pwm & 0x0f)); -} - -static ssize_t set_pwm1(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) -{ - struct i2c_client *client = to_i2c_client(dev); - struct asb100_data *data = i2c_get_clientdata(client); - unsigned long val; - int err; - - err = kstrtoul(buf, 10, &val); - if (err) - return err; - - mutex_lock(&data->update_lock); - data->pwm &= 0x80; /* keep the enable bit */ - data->pwm |= (0x0f & ASB100_PWM_TO_REG(val)); - asb100_write_value(client, ASB100_REG_PWM1, data->pwm); - mutex_unlock(&data->update_lock); - return count; -} - -static ssize_t show_pwm_enable1(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct asb100_data *data = asb100_update_device(dev); - return sprintf(buf, "%d\n", (data->pwm & 0x80) ? 1 : 0); -} - -static ssize_t set_pwm_enable1(struct device *dev, - struct device_attribute *attr, const char *buf, size_t count) -{ - struct i2c_client *client = to_i2c_client(dev); - struct asb100_data *data = i2c_get_clientdata(client); - unsigned long val; - int err; - - err = kstrtoul(buf, 10, &val); - if (err) - return err; - - mutex_lock(&data->update_lock); - data->pwm &= 0x0f; /* keep the duty cycle bits */ - data->pwm |= (val ? 0x80 : 0x00); - asb100_write_value(client, ASB100_REG_PWM1, data->pwm); - mutex_unlock(&data->update_lock); - return count; -} - -static DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm1, set_pwm1); -static DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR, - show_pwm_enable1, set_pwm_enable1); - -static struct attribute *asb100_attributes[] = { - &sensor_dev_attr_in0_input.dev_attr.attr, - &sensor_dev_attr_in0_min.dev_attr.attr, - &sensor_dev_attr_in0_max.dev_attr.attr, - &sensor_dev_attr_in1_input.dev_attr.attr, - &sensor_dev_attr_in1_min.dev_attr.attr, - &sensor_dev_attr_in1_max.dev_attr.attr, - &sensor_dev_attr_in2_input.dev_attr.attr, - &sensor_dev_attr_in2_min.dev_attr.attr, - &sensor_dev_attr_in2_max.dev_attr.attr, - &sensor_dev_attr_in3_input.dev_attr.attr, - &sensor_dev_attr_in3_min.dev_attr.attr, - &sensor_dev_attr_in3_max.dev_attr.attr, - &sensor_dev_attr_in4_input.dev_attr.attr, - &sensor_dev_attr_in4_min.dev_attr.attr, - &sensor_dev_attr_in4_max.dev_attr.attr, - &sensor_dev_attr_in5_input.dev_attr.attr, - &sensor_dev_attr_in5_min.dev_attr.attr, - &sensor_dev_attr_in5_max.dev_attr.attr, - &sensor_dev_attr_in6_input.dev_attr.attr, - &sensor_dev_attr_in6_min.dev_attr.attr, - &sensor_dev_attr_in6_max.dev_attr.attr, - - &sensor_dev_attr_fan1_input.dev_attr.attr, - &sensor_dev_attr_fan1_min.dev_attr.attr, - &sensor_dev_attr_fan1_div.dev_attr.attr, - &sensor_dev_attr_fan2_input.dev_attr.attr, - &sensor_dev_attr_fan2_min.dev_attr.attr, - &sensor_dev_attr_fan2_div.dev_attr.attr, - &sensor_dev_attr_fan3_input.dev_attr.attr, - &sensor_dev_attr_fan3_min.dev_attr.attr, - &sensor_dev_attr_fan3_div.dev_attr.attr, - - &sensor_dev_attr_temp1_input.dev_attr.attr, - &sensor_dev_attr_temp1_max.dev_attr.attr, - &sensor_dev_attr_temp1_max_hyst.dev_attr.attr, - &sensor_dev_attr_temp2_input.dev_attr.attr, - &sensor_dev_attr_temp2_max.dev_attr.attr, - &sensor_dev_attr_temp2_max_hyst.dev_attr.attr, - &sensor_dev_attr_temp3_input.dev_attr.attr, - &sensor_dev_attr_temp3_max.dev_attr.attr, - &sensor_dev_attr_temp3_max_hyst.dev_attr.attr, - &sensor_dev_attr_temp4_input.dev_attr.attr, - &sensor_dev_attr_temp4_max.dev_attr.attr, - &sensor_dev_attr_temp4_max_hyst.dev_attr.attr, - - &sensor_dev_attr_in0_alarm.dev_attr.attr, - &sensor_dev_attr_in1_alarm.dev_attr.attr, - &sensor_dev_attr_in2_alarm.dev_attr.attr, - &sensor_dev_attr_in3_alarm.dev_attr.attr, - &sensor_dev_attr_in4_alarm.dev_attr.attr, - &sensor_dev_attr_fan1_alarm.dev_attr.attr, - &sensor_dev_attr_fan2_alarm.dev_attr.attr, - &sensor_dev_attr_fan3_alarm.dev_attr.attr, - &sensor_dev_attr_temp1_alarm.dev_attr.attr, - &sensor_dev_attr_temp2_alarm.dev_attr.attr, - &sensor_dev_attr_temp3_alarm.dev_attr.attr, - - &dev_attr_cpu0_vid.attr, - &dev_attr_vrm.attr, - &dev_attr_alarms.attr, - &dev_attr_pwm1.attr, - &dev_attr_pwm1_enable.attr, - - NULL -}; - -static const struct attribute_group asb100_group = { - .attrs = asb100_attributes, -}; - -static int asb100_detect_subclients(struct i2c_client *client) -{ - int i, id, err; - int address = client->addr; - unsigned short sc_addr[2]; - struct asb100_data *data = i2c_get_clientdata(client); - struct i2c_adapter *adapter = client->adapter; - - id = i2c_adapter_id(adapter); - - if (force_subclients[0] == id && force_subclients[1] == address) { - for (i = 2; i <= 3; i++) { - if (force_subclients[i] < 0x48 || - force_subclients[i] > 0x4f) { - dev_err(&client->dev, "invalid subclient " - "address %d; must be 0x48-0x4f\n", - force_subclients[i]); - err = -ENODEV; - goto ERROR_SC_2; - } - } - asb100_write_value(client, ASB100_REG_I2C_SUBADDR, - (force_subclients[2] & 0x07) | - ((force_subclients[3] & 0x07) << 4)); - sc_addr[0] = force_subclients[2]; - sc_addr[1] = force_subclients[3]; - } else { - int val = asb100_read_value(client, ASB100_REG_I2C_SUBADDR); - sc_addr[0] = 0x48 + (val & 0x07); - sc_addr[1] = 0x48 + ((val >> 4) & 0x07); - } - - if (sc_addr[0] == sc_addr[1]) { - dev_err(&client->dev, "duplicate addresses 0x%x " - "for subclients\n", sc_addr[0]); - err = -ENODEV; - goto ERROR_SC_2; - } - - data->lm75[0] = i2c_new_dummy(adapter, sc_addr[0]); - if (!data->lm75[0]) { - dev_err(&client->dev, "subclient %d registration " - "at address 0x%x failed.\n", 1, sc_addr[0]); - err = -ENOMEM; - goto ERROR_SC_2; - } - - data->lm75[1] = i2c_new_dummy(adapter, sc_addr[1]); - if (!data->lm75[1]) { - dev_err(&client->dev, "subclient %d registration " - "at address 0x%x failed.\n", 2, sc_addr[1]); - err = -ENOMEM; - goto ERROR_SC_3; - } - - return 0; - -/* Undo inits in case of errors */ -ERROR_SC_3: - i2c_unregister_device(data->lm75[0]); -ERROR_SC_2: - return err; -} - -/* Return 0 if detection is successful, -ENODEV otherwise */ -static int asb100_detect(struct i2c_client *client, - struct i2c_board_info *info) -{ - struct i2c_adapter *adapter = client->adapter; - int val1, val2; - - if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { - pr_debug("detect failed, smbus byte data not supported!\n"); - return -ENODEV; - } - - val1 = i2c_smbus_read_byte_data(client, ASB100_REG_BANK); - val2 = i2c_smbus_read_byte_data(client, ASB100_REG_CHIPMAN); - - /* If we're in bank 0 */ - if ((!(val1 & 0x07)) && - /* Check for ASB100 ID (low byte) */ - (((!(val1 & 0x80)) && (val2 != 0x94)) || - /* Check for ASB100 ID (high byte ) */ - ((val1 & 0x80) && (val2 != 0x06)))) { - pr_debug("detect failed, bad chip id 0x%02x!\n", val2); - return -ENODEV; - } - - /* Put it now into bank 0 and Vendor ID High Byte */ - i2c_smbus_write_byte_data(client, ASB100_REG_BANK, - (i2c_smbus_read_byte_data(client, ASB100_REG_BANK) & 0x78) - | 0x80); - - /* Determine the chip type. */ - val1 = i2c_smbus_read_byte_data(client, ASB100_REG_WCHIPID); - val2 = i2c_smbus_read_byte_data(client, ASB100_REG_CHIPMAN); - - if (val1 != 0x31 || val2 != 0x06) - return -ENODEV; - - strlcpy(info->type, "asb100", I2C_NAME_SIZE); - - return 0; -} - -static int asb100_probe(struct i2c_client *client, - const struct i2c_device_id *id) -{ - int err; - struct asb100_data *data; - - data = kzalloc(sizeof(struct asb100_data), GFP_KERNEL); - if (!data) { - pr_debug("probe failed, kzalloc failed!\n"); - err = -ENOMEM; - goto ERROR0; - } - - i2c_set_clientdata(client, data); - mutex_init(&data->lock); - mutex_init(&data->update_lock); - - /* Attach secondary lm75 clients */ - err = asb100_detect_subclients(client); - if (err) - goto ERROR1; - - /* Initialize the chip */ - asb100_init_client(client); - - /* A few vars need to be filled upon startup */ - data->fan_min[0] = asb100_read_value(client, ASB100_REG_FAN_MIN(0)); - data->fan_min[1] = asb100_read_value(client, ASB100_REG_FAN_MIN(1)); - data->fan_min[2] = asb100_read_value(client, ASB100_REG_FAN_MIN(2)); - - /* Register sysfs hooks */ - err = sysfs_create_group(&client->dev.kobj, &asb100_group); - if (err) - goto ERROR3; - - data->hwmon_dev = hwmon_device_register(&client->dev); - if (IS_ERR(data->hwmon_dev)) { - err = PTR_ERR(data->hwmon_dev); - goto ERROR4; - } - - return 0; - -ERROR4: - sysfs_remove_group(&client->dev.kobj, &asb100_group); -ERROR3: - i2c_unregister_device(data->lm75[1]); - i2c_unregister_device(data->lm75[0]); -ERROR1: - kfree(data); -ERROR0: - return err; -} - -static int asb100_remove(struct i2c_client *client) -{ - struct asb100_data *data = i2c_get_clientdata(client); - - hwmon_device_unregister(data->hwmon_dev); - sysfs_remove_group(&client->dev.kobj, &asb100_group); - - i2c_unregister_device(data->lm75[1]); - i2c_unregister_device(data->lm75[0]); - - kfree(data); - - return 0; -} - -/* - * The SMBus locks itself, usually, but nothing may access the chip between - * bank switches. - */ -static int asb100_read_value(struct i2c_client *client, u16 reg) -{ - struct asb100_data *data = i2c_get_clientdata(client); - struct i2c_client *cl; - int res, bank; - - mutex_lock(&data->lock); - - bank = (reg >> 8) & 0x0f; - if (bank > 2) - /* switch banks */ - i2c_smbus_write_byte_data(client, ASB100_REG_BANK, bank); - - if (bank == 0 || bank > 2) { - res = i2c_smbus_read_byte_data(client, reg & 0xff); - } else { - /* switch to subclient */ - cl = data->lm75[bank - 1]; - - /* convert from ISA to LM75 I2C addresses */ - switch (reg & 0xff) { - case 0x50: /* TEMP */ - res = i2c_smbus_read_word_swapped(cl, 0); - break; - case 0x52: /* CONFIG */ - res = i2c_smbus_read_byte_data(cl, 1); - break; - case 0x53: /* HYST */ - res = i2c_smbus_read_word_swapped(cl, 2); - break; - case 0x55: /* MAX */ - default: - res = i2c_smbus_read_word_swapped(cl, 3); - break; - } - } - - if (bank > 2) - i2c_smbus_write_byte_data(client, ASB100_REG_BANK, 0); - - mutex_unlock(&data->lock); - - return res; -} - -static void asb100_write_value(struct i2c_client *client, u16 reg, u16 value) -{ - struct asb100_data *data = i2c_get_clientdata(client); - struct i2c_client *cl; - int bank; - - mutex_lock(&data->lock); - - bank = (reg >> 8) & 0x0f; - if (bank > 2) - /* switch banks */ - i2c_smbus_write_byte_data(client, ASB100_REG_BANK, bank); - - if (bank == 0 || bank > 2) { - i2c_smbus_write_byte_data(client, reg & 0xff, value & 0xff); - } else { - /* switch to subclient */ - cl = data->lm75[bank - 1]; - - /* convert from ISA to LM75 I2C addresses */ - switch (reg & 0xff) { - case 0x52: /* CONFIG */ - i2c_smbus_write_byte_data(cl, 1, value & 0xff); - break; - case 0x53: /* HYST */ - i2c_smbus_write_word_swapped(cl, 2, value); - break; - case 0x55: /* MAX */ - i2c_smbus_write_word_swapped(cl, 3, value); - break; - } - } - - if (bank > 2) - i2c_smbus_write_byte_data(client, ASB100_REG_BANK, 0); - - mutex_unlock(&data->lock); -} - -static void asb100_init_client(struct i2c_client *client) -{ - struct asb100_data *data = i2c_get_clientdata(client); - - data->vrm = vid_which_vrm(); - - /* Start monitoring */ - asb100_write_value(client, ASB100_REG_CONFIG, - (asb100_read_value(client, ASB100_REG_CONFIG) & 0xf7) | 0x01); -} - -static struct asb100_data *asb100_update_device(struct device *dev) -{ - struct i2c_client *client = to_i2c_client(dev); - struct asb100_data *data = i2c_get_clientdata(client); - int i; - - mutex_lock(&data->update_lock); - - if (time_after(jiffies, data->last_updated + HZ + HZ / 2) - || !data->valid) { - - dev_dbg(&client->dev, "starting device update...\n"); - - /* 7 voltage inputs */ - for (i = 0; i < 7; i++) { - data->in[i] = asb100_read_value(client, - ASB100_REG_IN(i)); - data->in_min[i] = asb100_read_value(client, - ASB100_REG_IN_MIN(i)); - data->in_max[i] = asb100_read_value(client, - ASB100_REG_IN_MAX(i)); - } - - /* 3 fan inputs */ - for (i = 0; i < 3; i++) { - data->fan[i] = asb100_read_value(client, - ASB100_REG_FAN(i)); - data->fan_min[i] = asb100_read_value(client, - ASB100_REG_FAN_MIN(i)); - } - - /* 4 temperature inputs */ - for (i = 1; i <= 4; i++) { - data->temp[i-1] = asb100_read_value(client, - ASB100_REG_TEMP(i)); - data->temp_max[i-1] = asb100_read_value(client, - ASB100_REG_TEMP_MAX(i)); - data->temp_hyst[i-1] = asb100_read_value(client, - ASB100_REG_TEMP_HYST(i)); - } - - /* VID and fan divisors */ - i = asb100_read_value(client, ASB100_REG_VID_FANDIV); - data->vid = i & 0x0f; - data->vid |= (asb100_read_value(client, - ASB100_REG_CHIPID) & 0x01) << 4; - data->fan_div[0] = (i >> 4) & 0x03; - data->fan_div[1] = (i >> 6) & 0x03; - data->fan_div[2] = (asb100_read_value(client, - ASB100_REG_PIN) >> 6) & 0x03; - - /* PWM */ - data->pwm = asb100_read_value(client, ASB100_REG_PWM1); - - /* alarms */ - data->alarms = asb100_read_value(client, ASB100_REG_ALARM1) + - (asb100_read_value(client, ASB100_REG_ALARM2) << 8); - - data->last_updated = jiffies; - data->valid = 1; - - dev_dbg(&client->dev, "... device update complete\n"); - } - - mutex_unlock(&data->update_lock); - - return data; -} - -module_i2c_driver(asb100_driver); - -MODULE_AUTHOR("Mark M. Hoffman <mhoffman@lightlink.com>"); -MODULE_DESCRIPTION("ASB100 Bach driver"); -MODULE_LICENSE("GPL"); |