/* * f75375s.c - driver for the Fintek F75375/SP and F75373 * hardware monitoring features * Copyright (C) 2006-2007 Riku Voipio <riku.voipio@movial.fi> * * Datasheets available at: * * f75375: * http://www.fintek.com.tw/files/productfiles/2005111152950.pdf * * f75373: * http://www.fintek.com.tw/files/productfiles/2005111153128.pdf * * 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. * */ #include <linux/module.h> #include <linux/jiffies.h> #include <linux/hwmon.h> #include <linux/hwmon-sysfs.h> #include <linux/i2c.h> #include <linux/err.h> #include <linux/mutex.h> #include <linux/f75375s.h> /* Addresses to scan */ static const unsigned short normal_i2c[] = { 0x2d, 0x2e, I2C_CLIENT_END }; /* Insmod parameters */ I2C_CLIENT_INSMOD_2(f75373, f75375); /* Fintek F75375 registers */ #define F75375_REG_CONFIG0 0x0 #define F75375_REG_CONFIG1 0x1 #define F75375_REG_CONFIG2 0x2 #define F75375_REG_CONFIG3 0x3 #define F75375_REG_ADDR 0x4 #define F75375_REG_INTR 0x31 #define F75375_CHIP_ID 0x5A #define F75375_REG_VERSION 0x5C #define F75375_REG_VENDOR 0x5D #define F75375_REG_FAN_TIMER 0x60 #define F75375_REG_VOLT(nr) (0x10 + (nr)) #define F75375_REG_VOLT_HIGH(nr) (0x20 + (nr) * 2) #define F75375_REG_VOLT_LOW(nr) (0x21 + (nr) * 2) #define F75375_REG_TEMP(nr) (0x14 + (nr)) #define F75375_REG_TEMP_HIGH(nr) (0x28 + (nr) * 2) #define F75375_REG_TEMP_HYST(nr) (0x29 + (nr) * 2) #define F75375_REG_FAN(nr) (0x16 + (nr) * 2) #define F75375_REG_FAN_MIN(nr) (0x2C + (nr) * 2) #define F75375_REG_FAN_FULL(nr) (0x70 + (nr) * 0x10) #define F75375_REG_FAN_PWM_DUTY(nr) (0x76 + (nr) * 0x10) #define F75375_REG_FAN_PWM_CLOCK(nr) (0x7D + (nr) * 0x10) #define F75375_REG_FAN_EXP(nr) (0x74 + (nr) * 0x10) #define F75375_REG_FAN_B_TEMP(nr, step) ((0xA0 + (nr) * 0x10) + (step)) #define F75375_REG_FAN_B_SPEED(nr, step) \ ((0xA5 + (nr) * 0x10) + (step) * 2) #define F75375_REG_PWM1_RAISE_DUTY 0x69 #define F75375_REG_PWM2_RAISE_DUTY 0x6A #define F75375_REG_PWM1_DROP_DUTY 0x6B #define F75375_REG_PWM2_DROP_DUTY 0x6C #define FAN_CTRL_LINEAR(nr) (4 + nr) #define FAN_CTRL_MODE(nr) (5 + ((nr) * 2)) /* * Data structures and manipulation thereof */ struct f75375_data { unsigned short addr; struct i2c_client *client; struct device *hwmon_dev; const char *name; int kind; struct mutex update_lock; /* protect register access */ char valid; unsigned long last_updated; /* In jiffies */ unsigned long last_limits; /* In jiffies */ /* Register values */ u8 in[4]; u8 in_max[4]; u8 in_min[4]; u16 fan[2]; u16 fan_min[2]; u16 fan_full[2]; u16 fan_exp[2]; u8 fan_timer; u8 pwm[2]; u8 pwm_mode[2]; u8 pwm_enable[2]; s8 temp[2]; s8 temp_high[2]; s8 temp_max_hyst[2]; }; static int f75375_attach_adapter(struct i2c_adapter *adapter); static int f75375_detect(struct i2c_adapter *adapter, int address, int kind); static int f75375_detach_client(struct i2c_client *client); static int f75375_probe(struct i2c_client *client); static int f75375_remove(struct i2c_client *client); static struct i2c_driver f75375_legacy_driver = { .driver = { .name = "f75375_legacy", }, .attach_adapter = f75375_attach_adapter, .detach_client = f75375_detach_client, }; static struct i2c_driver f75375_driver = { .driver = { .name = "f75375", }, .probe = f75375_probe, .remove = f75375_remove, }; static inline int f75375_read8(struct i2c_client *client, u8 reg) { return i2c_smbus_read_byte_data(client, reg); } /* in most cases, should be called while holding update_lock */ static inline u16 f75375_read16(struct i2c_client *client, u8 reg) { return ((i2c_smbus_read_byte_data(client, reg) << 8) | i2c_smbus_read_byte_data(client, reg + 1)); } static inline void f75375_write8(struct i2c_client *client, u8 reg, u8 value) { i2c_smbus_write_byte_data(client, reg, value); } static inline void f75375_write16(struct i2c_client *client, u8 reg, u16 value) { int err = i2c_smbus_write_byte_data(client, reg, (value << 8)); if (err) return; i2c_smbus_write_byte_data(client, reg + 1, (value & 0xFF)); } static struct f75375_data *f75375_update_device(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct f75375_data *data = i2c_get_clientdata(client); int nr; mutex_lock(&data->update_lock); /* Limit registers cache is refreshed after 60 seconds */ if (time_after(jiffies, data->last_limits + 60 * HZ) || !data->valid) { for (nr = 0; nr < 2; nr++) { data->temp_high[nr] = f75375_read8(client, F75375_REG_TEMP_HIGH(nr)); data->temp_max_hyst[nr] = f75375_read8(client, F75375_REG_TEMP_HYST(nr)); data->fan_full[nr] = f75375_read16(client, F75375_REG_FAN_FULL(nr)); data->fan_min[nr] = f75375_read16(client, F75375_REG_FAN_MIN(nr)); data->fan_exp[nr] = f75375_read16(client, F75375_REG_FAN_EXP(nr)); data->pwm[nr] = f75375_read8(client, F75375_REG_FAN_PWM_DUTY(nr)); } for (nr = 0; nr < 4; nr++) { data->in_max[nr] = f75375_read8(client, F75375_REG_VOLT_HIGH(nr)); data->in_min[nr] = f75375_read8(client, F75375_REG_VOLT_LOW(nr)); } data->fan_timer = f75375_read8(client, F75375_REG_FAN_TIMER); data->last_limits = jiffies; } /* Measurement registers cache is refreshed after 2 second */ if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) { for (nr = 0; nr < 2; nr++) { data->temp[nr] = f75375_read8(client, F75375_REG_TEMP(nr)); data->fan[nr] = f75375_read16(client, F75375_REG_FAN(nr)); } for (nr = 0; nr < 4; nr++) data->in[nr] = f75375_read8(client, F75375_REG_VOLT(nr)); data->last_updated = jiffies; data->valid = 1; } mutex_unlock(&data->update_lock); return data; } static inline u16 rpm_from_reg(u16 reg) { if (reg == 0 || reg == 0xffff) return 0; return (1500000 / reg); } static inline u16 rpm_to_reg(int rpm) { if (rpm < 367 || rpm > 0xffff) return 0xffff; return (1500000 / rpm); } 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 f75375_data *data = i2c_get_clientdata(client); int val = simple_strtoul(buf, NULL, 10); mutex_lock(&data->update_lock); data->fan_min[nr] = rpm_to_reg(val); f75375_write16(client, F75375_REG_FAN_MIN(nr), data->fan_min[nr]); mutex_unlock(&data->update_lock); return count; } static ssize_t set_fan_exp(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 f75375_data *data = i2c_get_clientdata(client); int val = simple_strtoul(buf, NULL, 10); mutex_lock(&data->update_lock); data->fan_exp[nr] = rpm_to_reg(val); f75375_write16(client, F75375_REG_FAN_EXP(nr), data->fan_exp[nr]); mutex_unlock(&data->update_lock); return count; } static ssize_t set_pwm(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 f75375_data *data = i2c_get_clientdata(client); int val = simple_strtoul(buf, NULL, 10); mutex_lock(&data->update_lock); data->pwm[nr] = SENSORS_LIMIT(val, 0, 255); f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr), data->pwm[nr]); mutex_unlock(&data->update_lock); return count; } static ssize_t show_pwm_enable(struct device *dev, struct device_attribute *attr, char *buf) { int nr = to_sensor_dev_attr(attr)->index; struct f75375_data *data = f75375_update_device(dev); return sprintf(buf, "%d\n", data->pwm_enable[nr]); } static int set_pwm_enable_direct(struct i2c_client *client, int nr, int val) { struct f75375_data *data = i2c_get_clientdata(client); u8 fanmode; if (val < 0 || val > 4) return -EINVAL; fanmode = f75375_read8(client, F75375_REG_FAN_TIMER); fanmode = ~(3 << FAN_CTRL_MODE(nr)); switch (val) { case 0: /* Full speed */ fanmode |= (3 << FAN_CTRL_MODE(nr)); data->pwm[nr] = 255; f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr), data->pwm[nr]); break; case 1: /* PWM */ fanmode |= (3 << FAN_CTRL_MODE(nr)); break; case 2: /* AUTOMATIC*/ fanmode |= (2 << FAN_CTRL_MODE(nr)); break; case 3: /* fan speed */ break; } f75375_write8(client, F75375_REG_FAN_TIMER, fanmode); data->pwm_enable[nr] = val; return 0; } static ssize_t set_pwm_enable(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 f75375_data *data = i2c_get_clientdata(client); int val = simple_strtoul(buf, NULL, 10); int err = 0; mutex_lock(&data->update_lock); err = set_pwm_enable_direct(client, nr, val); mutex_unlock(&data->update_lock); return err ? err : count; } static ssize_t set_pwm_mode(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 f75375_data *data = i2c_get_clientdata(client); int val = simple_strtoul(buf, NULL, 10); u8 conf = 0; if (!(val == 0 || val == 1)) return -EINVAL; mutex_lock(&data->update_lock); conf = f75375_read8(client, F75375_REG_CONFIG1); conf = ~(1 << FAN_CTRL_LINEAR(nr)); if (val == 0) conf |= (1 << FAN_CTRL_LINEAR(nr)) ; f75375_write8(client, F75375_REG_CONFIG1, conf); data->pwm_mode[nr] = val; mutex_unlock(&data->update_lock); return count; } static ssize_t show_pwm(struct device *dev, struct device_attribute *attr, char *buf) { int nr = to_sensor_dev_attr(attr)->index; struct f75375_data *data = f75375_update_device(dev); return sprintf(buf, "%d\n", data->pwm[nr]); } static ssize_t show_pwm_mode(struct device *dev, struct device_attribute *attr, char *buf) { int nr = to_sensor_dev_attr(attr)->index; struct f75375_data *data = f75375_update_device(dev); return sprintf(buf, "%d\n", data->pwm_mode[nr]); } #define VOLT_FROM_REG(val) ((val) * 8) #define VOLT_TO_REG(val) ((val) / 8) static ssize_t show_in(struct device *dev, struct device_attribute *attr, char *buf) { int nr = to_sensor_dev_attr(attr)->index; struct f75375_data *data = f75375_update_device(dev); return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in[nr])); } static ssize_t show_in_max(struct device *dev, struct device_attribute *attr, char *buf) { int nr = to_sensor_dev_attr(attr)->index; struct f75375_data *data = f75375_update_device(dev); return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in_max[nr])); } static ssize_t show_in_min(struct device *dev, struct device_attribute *attr, char *buf) { int nr = to_sensor_dev_attr(attr)->index; struct f75375_data *data = f75375_update_device(dev); return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in_min[nr])); } static ssize_t set_in_max(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 f75375_data *data = i2c_get_clientdata(client); int val = simple_strtoul(buf, NULL, 10); val = SENSORS_LIMIT(VOLT_TO_REG(val), 0, 0xff); mutex_lock(&data->update_lock); data->in_max[nr] = val; f75375_write8(client, F75375_REG_VOLT_HIGH(nr), data->in_max[nr]); mutex_unlock(&data->update_lock); return count; } static ssize_t set_in_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 f75375_data *data = i2c_get_clientdata(client); int val = simple_strtoul(buf, NULL, 10); val = SENSORS_LIMIT(VOLT_TO_REG(val), 0, 0xff); mutex_lock(&data->update_lock); data->in_min[nr] = val; f75375_write8(client, F75375_REG_VOLT_LOW(nr), data->in_min[nr]); mutex_unlock(&data->update_lock); return count; } #define TEMP_FROM_REG(val) ((val) * 1000) #define TEMP_TO_REG(val) ((val) / 1000) static ssize_t show_temp(struct device *dev, struct device_attribute *attr, char *buf) { int nr = to_sensor_dev_attr(attr)->index; struct f75375_data *data = f75375_update_device(dev); return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr])); } static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr, char *buf) { int nr = to_sensor_dev_attr(attr)->index; struct f75375_data *data = f75375_update_device(dev); return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr])); } static ssize_t show_temp_max_hyst(struct device *dev, struct device_attribute *attr, char *buf) { int nr = to_sensor_dev_attr(attr)->index; struct f75375_data *data = f75375_update_device(dev); return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[nr])); } static ssize_t set_temp_max(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 f75375_data *data = i2c_get_clientdata(client); int val = simple_strtol(buf, NULL, 10); val = SENSORS_LIMIT(TEMP_TO_REG(val), 0, 127); mutex_lock(&data->update_lock); data->temp_high[nr] = val; f75375_write8(client, F75375_REG_TEMP_HIGH(nr), data->temp_high[nr]); mutex_unlock(&data->update_lock); return count; } static ssize_t set_temp_max_hyst(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 f75375_data *data = i2c_get_clientdata(client); int val = simple_strtol(buf, NULL, 10); val = SENSORS_LIMIT(TEMP_TO_REG(val), 0, 127); mutex_lock(&data->update_lock); data->temp_max_hyst[nr] = val; f75375_write8(client, F75375_REG_TEMP_HYST(nr), data->temp_max_hyst[nr]); mutex_unlock(&data->update_lock); return count; } #define show_fan(thing) \ static ssize_t show_##thing(struct device *dev, struct device_attribute *attr, \ char *buf)\ {\ int nr = to_sensor_dev_attr(attr)->index;\ struct f75375_data *data = f75375_update_device(dev); \ return sprintf(buf, "%d\n", rpm_from_reg(data->thing[nr])); \ } show_fan(fan); show_fan(fan_min); show_fan(fan_full); show_fan(fan_exp); static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0); static SENSOR_DEVICE_ATTR(in0_max, S_IRUGO|S_IWUSR, show_in_max, set_in_max, 0); static SENSOR_DEVICE_ATTR(in0_min, S_IRUGO|S_IWUSR, show_in_min, set_in_min, 0); static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1); static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO|S_IWUSR, show_in_max, set_in_max, 1); static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO|S_IWUSR, show_in_min, set_in_min, 1); static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2); static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO|S_IWUSR, show_in_max, set_in_max, 2); static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO|S_IWUSR, show_in_min, set_in_min, 2); static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3); static SENSOR_DEVICE_ATTR(in3_max, S_IRUGO|S_IWUSR, show_in_max, set_in_max, 3); static SENSOR_DEVICE_ATTR(in3_min, S_IRUGO|S_IWUSR, show_in_min, set_in_min, 3); static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0); static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO|S_IWUSR, show_temp_max_hyst, set_temp_max_hyst, 0); static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO|S_IWUSR, show_temp_max, set_temp_max, 0); static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1); static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IRUGO|S_IWUSR, show_temp_max_hyst, set_temp_max_hyst, 1); static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO|S_IWUSR, show_temp_max, set_temp_max, 1); static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0); static SENSOR_DEVICE_ATTR(fan1_full, S_IRUGO, show_fan_full, NULL, 0); static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO|S_IWUSR, show_fan_min, set_fan_min, 0); static SENSOR_DEVICE_ATTR(fan1_exp, S_IRUGO|S_IWUSR, show_fan_exp, set_fan_exp, 0); static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1); static SENSOR_DEVICE_ATTR(fan2_full, S_IRUGO, show_fan_full, NULL, 1); static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO|S_IWUSR, show_fan_min, set_fan_min, 1); static SENSOR_DEVICE_ATTR(fan2_exp, S_IRUGO|S_IWUSR, show_fan_exp, set_fan_exp, 1); static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO|S_IWUSR, show_pwm, set_pwm, 0); static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO|S_IWUSR, show_pwm_enable, set_pwm_enable, 0); static SENSOR_DEVICE_ATTR(pwm1_mode, S_IRUGO, show_pwm_mode, set_pwm_mode, 0); static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 1); static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO|S_IWUSR, show_pwm_enable, set_pwm_enable, 1); static SENSOR_DEVICE_ATTR(pwm2_mode, S_IRUGO, show_pwm_mode, set_pwm_mode, 1); static struct attribute *f75375_attributes[] = { &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_fan1_input.dev_attr.attr, &sensor_dev_attr_fan1_full.dev_attr.attr, &sensor_dev_attr_fan1_min.dev_attr.attr, &sensor_dev_attr_fan1_exp.dev_attr.attr, &sensor_dev_attr_fan2_input.dev_attr.attr, &sensor_dev_attr_fan2_full.dev_attr.attr, &sensor_dev_attr_fan2_min.dev_attr.attr, &sensor_dev_attr_fan2_exp.dev_attr.attr, &sensor_dev_attr_pwm1.dev_attr.attr, &sensor_dev_attr_pwm1_enable.dev_attr.attr, &sensor_dev_attr_pwm1_mode.dev_attr.attr, &sensor_dev_attr_pwm2.dev_attr.attr, &sensor_dev_attr_pwm2_enable.dev_attr.attr, &sensor_dev_attr_pwm2_mode.dev_attr.attr, &sensor_dev_attr_in0_input.dev_attr.attr, &sensor_dev_attr_in0_max.dev_attr.attr, &sensor_dev_attr_in0_min.dev_attr.attr, &sensor_dev_attr_in1_input.dev_attr.attr, &sensor_dev_attr_in1_max.dev_attr.attr, &sensor_dev_attr_in1_min.dev_attr.attr, &sensor_dev_attr_in2_input.dev_attr.attr, &sensor_dev_attr_in2_max.dev_attr.attr, &sensor_dev_attr_in2_min.dev_attr.attr, &sensor_dev_attr_in3_input.dev_attr.attr, &sensor_dev_attr_in3_max.dev_attr.attr, &sensor_dev_attr_in3_min.dev_attr.attr, NULL }; static const struct attribute_group f75375_group = { .attrs = f75375_attributes, }; static int f75375_detach_client(struct i2c_client *client) { int err; f75375_remove(client); err = i2c_detach_client(client); if (err) { dev_err(&client->dev, "Client deregistration failed, " "client not detached.\n"); return err; } kfree(client); return 0; } static void f75375_init(struct i2c_client *client, struct f75375_data *data, struct f75375s_platform_data *f75375s_pdata) { int nr; set_pwm_enable_direct(client, 0, f75375s_pdata->pwm_enable[0]); set_pwm_enable_direct(client, 1, f75375s_pdata->pwm_enable[1]); for (nr = 0; nr < 2; nr++) { data->pwm[nr] = SENSORS_LIMIT(f75375s_pdata->pwm[nr], 0, 255); f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr), data->pwm[nr]); } } static int f75375_probe(struct i2c_client *client) { struct f75375_data *data = i2c_get_clientdata(client); struct f75375s_platform_data *f75375s_pdata = client->dev.platform_data; int err; if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) return -EIO; if (!(data = kzalloc(sizeof(struct f75375_data), GFP_KERNEL))) return -ENOMEM; i2c_set_clientdata(client, data); data->client = client; mutex_init(&data->update_lock); if (strcmp(client->name, "f75375") == 0) data->kind = f75375; else if (strcmp(client->name, "f75373") == 0) data->kind = f75373; else { dev_err(&client->dev, "Unsupported device: %s\n", client->name); return -ENODEV; } if ((err = sysfs_create_group(&client->dev.kobj, &f75375_group))) goto exit_free; if (data->kind == f75375) { err = sysfs_chmod_file(&client->dev.kobj, &sensor_dev_attr_pwm1_mode.dev_attr.attr, S_IRUGO | S_IWUSR); if (err) goto exit_remove; err = sysfs_chmod_file(&client->dev.kobj, &sensor_dev_attr_pwm2_mode.dev_attr.attr, S_IRUGO | S_IWUSR); if (err) goto exit_remove; } data->hwmon_dev = hwmon_device_register(&client->dev); if (IS_ERR(data->hwmon_dev)) { err = PTR_ERR(data->hwmon_dev); goto exit_remove; } if (f75375s_pdata != NULL) f75375_init(client, data, f75375s_pdata); return 0; exit_remove: sysfs_remove_group(&client->dev.kobj, &f75375_group); exit_free: kfree(data); i2c_set_clientdata(client, NULL); return err; } static int f75375_remove(struct i2c_client *client) { struct f75375_data *data = i2c_get_clientdata(client); hwmon_device_unregister(data->hwmon_dev); sysfs_remove_group(&client->dev.kobj, &f75375_group); kfree(data); i2c_set_clientdata(client, NULL); return 0; } static int f75375_attach_adapter(struct i2c_adapter *adapter) { if (!(adapter->class & I2C_CLASS_HWMON)) return 0; return i2c_probe(adapter, &addr_data, f75375_detect); } /* This function is called by i2c_probe */ static int f75375_detect(struct i2c_adapter *adapter, int address, int kind) { struct i2c_client *client; u8 version = 0; int err = 0; const char *name = ""; if (!(client = kzalloc(sizeof(*client), GFP_KERNEL))) { err = -ENOMEM; goto exit; } client->addr = address; client->adapter = adapter; client->driver = &f75375_legacy_driver; if (kind < 0) { u16 vendid = f75375_read16(client, F75375_REG_VENDOR); u16 chipid = f75375_read16(client, F75375_CHIP_ID); version = f75375_read8(client, F75375_REG_VERSION); if (chipid == 0x0306 && vendid == 0x1934) { kind = f75375; } else if (chipid == 0x0204 && vendid == 0x1934) { kind = f75373; } else { dev_err(&adapter->dev, "failed,%02X,%02X,%02X\n", chipid, version, vendid); goto exit_free; } } if (kind == f75375) { name = "f75375"; } else if (kind == f75373) { name = "f75373"; } dev_info(&adapter->dev, "found %s version: %02X\n", name, version); strlcpy(client->name, name, I2C_NAME_SIZE); if ((err = i2c_attach_client(client))) goto exit_free; if ((err = f75375_probe(client)) < 0) goto exit_detach; return 0; exit_detach: i2c_detach_client(client); exit_free: kfree(client); exit: return err; } static int __init sensors_f75375_init(void) { int status; status = i2c_add_driver(&f75375_driver); if (status) return status; status = i2c_add_driver(&f75375_legacy_driver); if (status) i2c_del_driver(&f75375_driver); return status; } static void __exit sensors_f75375_exit(void) { i2c_del_driver(&f75375_legacy_driver); i2c_del_driver(&f75375_driver); } MODULE_AUTHOR("Riku Voipio <riku.voipio@movial.fi>"); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("F75373/F75375 hardware monitoring driver"); module_init(sensors_f75375_init); module_exit(sensors_f75375_exit);