diff options
Diffstat (limited to 'drivers/hwmon/it87.c')
| -rw-r--r-- | drivers/hwmon/it87.c | 76 |
1 files changed, 56 insertions, 20 deletions
diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c index db20c9e47393..53cc2b6d6385 100644 --- a/drivers/hwmon/it87.c +++ b/drivers/hwmon/it87.c @@ -36,19 +36,21 @@ #include <linux/slab.h> #include <linux/jiffies.h> #include <linux/i2c.h> -#include <linux/i2c-sensor.h> -#include <linux/i2c-vid.h> +#include <linux/i2c-isa.h> +#include <linux/hwmon.h> #include <linux/hwmon-sysfs.h> +#include <linux/hwmon-vid.h> +#include <linux/err.h> #include <asm/io.h> /* Addresses to scan */ static unsigned short normal_i2c[] = { 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END }; -static unsigned int normal_isa[] = { 0x0290, I2C_CLIENT_ISA_END }; +static unsigned short isa_address = 0x290; /* Insmod parameters */ -SENSORS_INSMOD_2(it87, it8712); +I2C_CLIENT_INSMOD_2(it87, it8712); #define REG 0x2e /* The register to read/write */ #define DEV 0x07 /* Register: Logical device select */ @@ -192,6 +194,7 @@ static int DIV_TO_REG(int val) allocated. */ struct it87_data { struct i2c_client client; + struct class_device *class_dev; struct semaphore lock; enum chips type; @@ -218,7 +221,7 @@ struct it87_data { static int it87_attach_adapter(struct i2c_adapter *adapter); -static int it87_find(int *address); +static int it87_isa_attach_adapter(struct i2c_adapter *adapter); static int it87_detect(struct i2c_adapter *adapter, int address, int kind); static int it87_detach_client(struct i2c_client *client); @@ -239,6 +242,14 @@ static struct i2c_driver it87_driver = { .detach_client = it87_detach_client, }; +static struct i2c_driver it87_isa_driver = { + .owner = THIS_MODULE, + .name = "it87-isa", + .attach_adapter = it87_isa_attach_adapter, + .detach_client = it87_detach_client, +}; + + static ssize_t show_in(struct device *dev, struct device_attribute *attr, char *buf) { @@ -686,11 +697,16 @@ static int it87_attach_adapter(struct i2c_adapter *adapter) { if (!(adapter->class & I2C_CLASS_HWMON)) return 0; - return i2c_detect(adapter, &addr_data, it87_detect); + return i2c_probe(adapter, &addr_data, it87_detect); } -/* SuperIO detection - will change normal_isa[0] if a chip is found */ -static int it87_find(int *address) +static int it87_isa_attach_adapter(struct i2c_adapter *adapter) +{ + return it87_detect(adapter, isa_address, -1); +} + +/* SuperIO detection - will change isa_address if a chip is found */ +static int __init it87_find(int *address) { int err = -ENODEV; @@ -721,7 +737,7 @@ exit: return err; } -/* This function is called by i2c_detect */ +/* This function is called by i2c_probe */ int it87_detect(struct i2c_adapter *adapter, int address, int kind) { int i; @@ -738,7 +754,7 @@ int it87_detect(struct i2c_adapter *adapter, int address, int kind) /* Reserve the ISA region */ if (is_isa) - if (!request_region(address, IT87_EXTENT, it87_driver.name)) + if (!request_region(address, IT87_EXTENT, it87_isa_driver.name)) goto ERROR0; /* Probe whether there is anything available on this address. Already @@ -784,7 +800,7 @@ int it87_detect(struct i2c_adapter *adapter, int address, int kind) i2c_set_clientdata(new_client, data); new_client->addr = address; new_client->adapter = adapter; - new_client->driver = &it87_driver; + new_client->driver = is_isa ? &it87_isa_driver : &it87_driver; new_client->flags = 0; /* Now, we do the remaining detection. */ @@ -840,6 +856,12 @@ int it87_detect(struct i2c_adapter *adapter, int address, int kind) it87_init_client(new_client, data); /* Register sysfs hooks */ + data->class_dev = hwmon_device_register(&new_client->dev); + if (IS_ERR(data->class_dev)) { + err = PTR_ERR(data->class_dev); + goto ERROR3; + } + device_create_file(&new_client->dev, &sensor_dev_attr_in0_input.dev_attr); device_create_file(&new_client->dev, &sensor_dev_attr_in1_input.dev_attr); device_create_file(&new_client->dev, &sensor_dev_attr_in2_input.dev_attr); @@ -897,13 +919,15 @@ int it87_detect(struct i2c_adapter *adapter, int address, int kind) } if (data->type == it8712) { - data->vrm = i2c_which_vrm(); + data->vrm = vid_which_vrm(); device_create_file_vrm(new_client); device_create_file_vid(new_client); } return 0; +ERROR3: + i2c_detach_client(new_client); ERROR2: kfree(data); ERROR1: @@ -915,17 +939,17 @@ ERROR0: static int it87_detach_client(struct i2c_client *client) { + struct it87_data *data = i2c_get_clientdata(client); int err; - if ((err = i2c_detach_client(client))) { - dev_err(&client->dev, - "Client deregistration failed, client not detached.\n"); + hwmon_device_unregister(data->class_dev); + + if ((err = i2c_detach_client(client))) return err; - } if(i2c_is_isa_client(client)) release_region(client->addr, IT87_EXTENT); - kfree(i2c_get_clientdata(client)); + kfree(data); return 0; } @@ -1158,16 +1182,28 @@ static struct it87_data *it87_update_device(struct device *dev) static int __init sm_it87_init(void) { - int addr; + int addr, res; if (!it87_find(&addr)) { - normal_isa[0] = addr; + isa_address = addr; + } + + res = i2c_add_driver(&it87_driver); + if (res) + return res; + + res = i2c_isa_add_driver(&it87_isa_driver); + if (res) { + i2c_del_driver(&it87_driver); + return res; } - return i2c_add_driver(&it87_driver); + + return 0; } static void __exit sm_it87_exit(void) { + i2c_isa_del_driver(&it87_isa_driver); i2c_del_driver(&it87_driver); } |