X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;ds=sidebyside;f=drivers%2Fhwmon%2Flm78.c;h=886786c33916d8960757251d4bdf5fd662a5d6dd;hb=a22a0fab32e1216df56e4b9a577dc5c922cf7524;hp=bde0cda9477e1a52c62e3960dd1022185c5e838a;hpb=7079060f3e86ea4c1d4e9c1e356592ef9dcaaa1f;p=powerpc.git diff --git a/drivers/hwmon/lm78.c b/drivers/hwmon/lm78.c index bde0cda947..886786c339 100644 --- a/drivers/hwmon/lm78.c +++ b/drivers/hwmon/lm78.c @@ -27,6 +27,7 @@ #include #include #include +#include #include /* Addresses to scan */ @@ -124,17 +125,15 @@ static inline int TEMP_FROM_REG(s8 val) bad. Quite a lot of bookkeeping is done. A real driver can often cut some corners. */ -/* For each registered LM78, we need to keep some data in memory. That - data is pointed to by lm78_list[NR]->data. The structure itself is - dynamically allocated, at the same time when a new lm78 client is - allocated. */ +/* For each registered chip, we need to keep some data in memory. + The structure is dynamically allocated. */ struct lm78_data { struct i2c_client client; struct class_device *class_dev; - struct semaphore lock; + struct mutex lock; enum chips type; - struct semaphore update_lock; + struct mutex update_lock; char valid; /* !=0 if following fields are valid */ unsigned long last_updated; /* In jiffies */ @@ -157,24 +156,26 @@ static int lm78_isa_attach_adapter(struct i2c_adapter *adapter); static int lm78_detect(struct i2c_adapter *adapter, int address, int kind); static int lm78_detach_client(struct i2c_client *client); -static int lm78_read_value(struct i2c_client *client, u8 register); -static int lm78_write_value(struct i2c_client *client, u8 register, u8 value); +static int lm78_read_value(struct i2c_client *client, u8 reg); +static int lm78_write_value(struct i2c_client *client, u8 reg, u8 value); static struct lm78_data *lm78_update_device(struct device *dev); static void lm78_init_client(struct i2c_client *client); static struct i2c_driver lm78_driver = { - .owner = THIS_MODULE, - .name = "lm78", + .driver = { + .name = "lm78", + }, .id = I2C_DRIVERID_LM78, - .flags = I2C_DF_NOTIFY, .attach_adapter = lm78_attach_adapter, .detach_client = lm78_detach_client, }; static struct i2c_driver lm78_isa_driver = { - .owner = THIS_MODULE, - .name = "lm78-isa", + .driver = { + .owner = THIS_MODULE, + .name = "lm78-isa", + }, .attach_adapter = lm78_isa_attach_adapter, .detach_client = lm78_detach_client, }; @@ -206,10 +207,10 @@ static ssize_t set_in_min(struct device *dev, const char *buf, struct lm78_data *data = i2c_get_clientdata(client); unsigned long val = simple_strtoul(buf, NULL, 10); - down(&data->update_lock); + mutex_lock(&data->update_lock); data->in_min[nr] = IN_TO_REG(val); lm78_write_value(client, LM78_REG_IN_MIN(nr), data->in_min[nr]); - up(&data->update_lock); + mutex_unlock(&data->update_lock); return count; } @@ -220,10 +221,10 @@ static ssize_t set_in_max(struct device *dev, const char *buf, struct lm78_data *data = i2c_get_clientdata(client); unsigned long val = simple_strtoul(buf, NULL, 10); - down(&data->update_lock); + mutex_lock(&data->update_lock); data->in_max[nr] = IN_TO_REG(val); lm78_write_value(client, LM78_REG_IN_MAX(nr), data->in_max[nr]); - up(&data->update_lock); + mutex_unlock(&data->update_lock); return count; } @@ -287,10 +288,10 @@ static ssize_t set_temp_over(struct device *dev, struct device_attribute *attr, struct lm78_data *data = i2c_get_clientdata(client); long val = simple_strtol(buf, NULL, 10); - down(&data->update_lock); + mutex_lock(&data->update_lock); data->temp_over = TEMP_TO_REG(val); lm78_write_value(client, LM78_REG_TEMP_OVER, data->temp_over); - up(&data->update_lock); + mutex_unlock(&data->update_lock); return count; } @@ -306,10 +307,10 @@ static ssize_t set_temp_hyst(struct device *dev, struct device_attribute *attr, struct lm78_data *data = i2c_get_clientdata(client); long val = simple_strtol(buf, NULL, 10); - down(&data->update_lock); + mutex_lock(&data->update_lock); data->temp_hyst = TEMP_TO_REG(val); lm78_write_value(client, LM78_REG_TEMP_HYST, data->temp_hyst); - up(&data->update_lock); + mutex_unlock(&data->update_lock); return count; } @@ -341,10 +342,10 @@ static ssize_t set_fan_min(struct device *dev, const char *buf, struct lm78_data *data = i2c_get_clientdata(client); unsigned long val = simple_strtoul(buf, NULL, 10); - down(&data->update_lock); + mutex_lock(&data->update_lock); data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); lm78_write_value(client, LM78_REG_FAN_MIN(nr), data->fan_min[nr]); - up(&data->update_lock); + mutex_unlock(&data->update_lock); return count; } @@ -356,7 +357,7 @@ static ssize_t show_fan_div(struct device *dev, char *buf, int nr) /* 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 suprise; the user doesn't expect the fan minimum to change just + 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, const char *buf, size_t count, int nr) @@ -367,7 +368,7 @@ static ssize_t set_fan_div(struct device *dev, const char *buf, unsigned long min; u8 reg; - down(&data->update_lock); + mutex_lock(&data->update_lock); min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr])); @@ -379,7 +380,7 @@ static ssize_t set_fan_div(struct device *dev, const char *buf, default: dev_err(&client->dev, "fan_div value %ld not " "supported. Choose one of 1, 2, 4 or 8!\n", val); - up(&data->update_lock); + mutex_unlock(&data->update_lock); return -EINVAL; } @@ -397,7 +398,7 @@ static ssize_t set_fan_div(struct device *dev, const char *buf, data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); lm78_write_value(client, LM78_REG_FAN_MIN(nr), data->fan_min[nr]); - up(&data->update_lock); + mutex_unlock(&data->update_lock); return count; } @@ -451,7 +452,7 @@ static DEVICE_ATTR(fan3_div, S_IRUGO, show_fan_3_div, NULL); static ssize_t show_vid(struct device *dev, struct device_attribute *attr, char *buf) { struct lm78_data *data = lm78_update_device(dev); - return sprintf(buf, "%d\n", vid_from_reg(82, data->vid)); + return sprintf(buf, "%d\n", vid_from_reg(data->vid, 82)); } static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL); @@ -479,6 +480,50 @@ static int lm78_isa_attach_adapter(struct i2c_adapter *adapter) return lm78_detect(adapter, isa_address, -1); } +static struct attribute *lm78_attributes[] = { + &dev_attr_in0_input.attr, + &dev_attr_in0_min.attr, + &dev_attr_in0_max.attr, + &dev_attr_in1_input.attr, + &dev_attr_in1_min.attr, + &dev_attr_in1_max.attr, + &dev_attr_in2_input.attr, + &dev_attr_in2_min.attr, + &dev_attr_in2_max.attr, + &dev_attr_in3_input.attr, + &dev_attr_in3_min.attr, + &dev_attr_in3_max.attr, + &dev_attr_in4_input.attr, + &dev_attr_in4_min.attr, + &dev_attr_in4_max.attr, + &dev_attr_in5_input.attr, + &dev_attr_in5_min.attr, + &dev_attr_in5_max.attr, + &dev_attr_in6_input.attr, + &dev_attr_in6_min.attr, + &dev_attr_in6_max.attr, + &dev_attr_temp1_input.attr, + &dev_attr_temp1_max.attr, + &dev_attr_temp1_max_hyst.attr, + &dev_attr_fan1_input.attr, + &dev_attr_fan1_min.attr, + &dev_attr_fan1_div.attr, + &dev_attr_fan2_input.attr, + &dev_attr_fan2_min.attr, + &dev_attr_fan2_div.attr, + &dev_attr_fan3_input.attr, + &dev_attr_fan3_min.attr, + &dev_attr_fan3_div.attr, + &dev_attr_alarms.attr, + &dev_attr_cpu0_vid.attr, + + NULL +}; + +static const struct attribute_group lm78_group = { + .attrs = lm78_attributes, +}; + /* This function is called by i2c_probe */ static int lm78_detect(struct i2c_adapter *adapter, int address, int kind) { @@ -497,7 +542,7 @@ static int lm78_detect(struct i2c_adapter *adapter, int address, int kind) /* Reserve the ISA region */ if (is_isa) if (!request_region(address, LM78_EXTENT, - lm78_isa_driver.name)) { + lm78_isa_driver.driver.name)) { err = -EBUSY; goto ERROR0; } @@ -547,7 +592,7 @@ static int lm78_detect(struct i2c_adapter *adapter, int address, int kind) new_client = &data->client; if (is_isa) - init_MUTEX(&data->lock); + mutex_init(&data->lock); i2c_set_clientdata(new_client, data); new_client->addr = address; new_client->adapter = adapter; @@ -597,7 +642,7 @@ static int lm78_detect(struct i2c_adapter *adapter, int address, int kind) data->type = kind; data->valid = 0; - init_MUTEX(&data->update_lock); + mutex_init(&data->update_lock); /* Tell the I2C layer a new client has arrived */ if ((err = i2c_attach_client(new_client))) @@ -613,50 +658,19 @@ static int lm78_detect(struct i2c_adapter *adapter, int address, int kind) } /* Register sysfs hooks */ + if ((err = sysfs_create_group(&new_client->dev.kobj, &lm78_group))) + goto ERROR3; + data->class_dev = hwmon_device_register(&new_client->dev); if (IS_ERR(data->class_dev)) { err = PTR_ERR(data->class_dev); - goto ERROR3; + goto ERROR4; } - device_create_file(&new_client->dev, &dev_attr_in0_input); - device_create_file(&new_client->dev, &dev_attr_in0_min); - device_create_file(&new_client->dev, &dev_attr_in0_max); - device_create_file(&new_client->dev, &dev_attr_in1_input); - device_create_file(&new_client->dev, &dev_attr_in1_min); - device_create_file(&new_client->dev, &dev_attr_in1_max); - device_create_file(&new_client->dev, &dev_attr_in2_input); - device_create_file(&new_client->dev, &dev_attr_in2_min); - device_create_file(&new_client->dev, &dev_attr_in2_max); - device_create_file(&new_client->dev, &dev_attr_in3_input); - device_create_file(&new_client->dev, &dev_attr_in3_min); - device_create_file(&new_client->dev, &dev_attr_in3_max); - device_create_file(&new_client->dev, &dev_attr_in4_input); - device_create_file(&new_client->dev, &dev_attr_in4_min); - device_create_file(&new_client->dev, &dev_attr_in4_max); - device_create_file(&new_client->dev, &dev_attr_in5_input); - device_create_file(&new_client->dev, &dev_attr_in5_min); - device_create_file(&new_client->dev, &dev_attr_in5_max); - device_create_file(&new_client->dev, &dev_attr_in6_input); - device_create_file(&new_client->dev, &dev_attr_in6_min); - device_create_file(&new_client->dev, &dev_attr_in6_max); - device_create_file(&new_client->dev, &dev_attr_temp1_input); - device_create_file(&new_client->dev, &dev_attr_temp1_max); - device_create_file(&new_client->dev, &dev_attr_temp1_max_hyst); - device_create_file(&new_client->dev, &dev_attr_fan1_input); - device_create_file(&new_client->dev, &dev_attr_fan1_min); - device_create_file(&new_client->dev, &dev_attr_fan1_div); - device_create_file(&new_client->dev, &dev_attr_fan2_input); - device_create_file(&new_client->dev, &dev_attr_fan2_min); - device_create_file(&new_client->dev, &dev_attr_fan2_div); - device_create_file(&new_client->dev, &dev_attr_fan3_input); - device_create_file(&new_client->dev, &dev_attr_fan3_min); - device_create_file(&new_client->dev, &dev_attr_fan3_div); - device_create_file(&new_client->dev, &dev_attr_alarms); - device_create_file(&new_client->dev, &dev_attr_cpu0_vid); - return 0; +ERROR4: + sysfs_remove_group(&new_client->dev.kobj, &lm78_group); ERROR3: i2c_detach_client(new_client); ERROR2: @@ -674,6 +688,7 @@ static int lm78_detach_client(struct i2c_client *client) int err; hwmon_device_unregister(data->class_dev); + sysfs_remove_group(&client->dev.kobj, &lm78_group); if ((err = i2c_detach_client(client))) return err; @@ -696,10 +711,10 @@ static int lm78_read_value(struct i2c_client *client, u8 reg) int res; if (i2c_is_isa_client(client)) { struct lm78_data *data = i2c_get_clientdata(client); - down(&data->lock); + mutex_lock(&data->lock); outb_p(reg, client->addr + LM78_ADDR_REG_OFFSET); res = inb_p(client->addr + LM78_DATA_REG_OFFSET); - up(&data->lock); + mutex_unlock(&data->lock); return res; } else return i2c_smbus_read_byte_data(client, reg); @@ -716,10 +731,10 @@ static int lm78_write_value(struct i2c_client *client, u8 reg, u8 value) { if (i2c_is_isa_client(client)) { struct lm78_data *data = i2c_get_clientdata(client); - down(&data->lock); + mutex_lock(&data->lock); outb_p(reg, client->addr + LM78_ADDR_REG_OFFSET); outb_p(value, client->addr + LM78_DATA_REG_OFFSET); - up(&data->lock); + mutex_unlock(&data->lock); return 0; } else return i2c_smbus_write_byte_data(client, reg, value); @@ -741,7 +756,7 @@ static struct lm78_data *lm78_update_device(struct device *dev) struct lm78_data *data = i2c_get_clientdata(client); int i; - down(&data->update_lock); + mutex_lock(&data->update_lock); if (time_after(jiffies, data->last_updated + HZ + HZ / 2) || !data->valid) { @@ -785,7 +800,7 @@ static struct lm78_data *lm78_update_device(struct device *dev) data->fan_div[2] = 1; } - up(&data->update_lock); + mutex_unlock(&data->update_lock); return data; } @@ -798,18 +813,18 @@ static int __init sm_lm78_init(void) if (res) return res; - res = i2c_isa_add_driver(&lm78_isa_driver); - if (res) { - i2c_del_driver(&lm78_driver); - return res; - } + /* Don't exit if this one fails, we still want the I2C variants + to work! */ + if (i2c_isa_add_driver(&lm78_isa_driver)) + isa_address = 0; return 0; } static void __exit sm_lm78_exit(void) { - i2c_isa_del_driver(&lm78_isa_driver); + if (isa_address) + i2c_isa_del_driver(&lm78_isa_driver); i2c_del_driver(&lm78_driver); }