diff options
Diffstat (limited to 'drivers/hwmon/lm78.c')
| -rw-r--r-- | drivers/hwmon/lm78.c | 38 |
1 files changed, 16 insertions, 22 deletions
diff --git a/drivers/hwmon/lm78.c b/drivers/hwmon/lm78.c index f284ecbb9ca8..177eaddde321 100644 --- a/drivers/hwmon/lm78.c +++ b/drivers/hwmon/lm78.c @@ -114,22 +114,16 @@ static inline int TEMP_FROM_REG(s8 val) #define DIV_FROM_REG(val) (1 << (val)) -/* There are some complications in a module like this. First off, LM78 chips - may be both present on the SMBus and the ISA bus, and we have to handle - those cases separately at some places. Second, there might be several - LM78 chips available (well, actually, that is probably never done; but - it is a clean illustration of how to handle a case like that). Finally, - a specific chip may be attached to *both* ISA and SMBus, and we would - not like to detect it double. */ - -/* For ISA chips, we abuse the i2c_client addr and name fields. We also use - the driver field to differentiate between I2C and ISA chips. */ struct lm78_data { struct i2c_client client; struct device *hwmon_dev; struct mutex lock; enum chips type; + /* For ISA device only */ + const char *name; + int isa_addr; + struct mutex update_lock; char valid; /* !=0 if following fields are valid */ unsigned long last_updated; /* In jiffies */ @@ -536,7 +530,7 @@ static ssize_t show_name(struct device *dev, struct device_attribute { struct lm78_data *data = dev_get_drvdata(dev); - return sprintf(buf, "%s\n", data->client.name); + return sprintf(buf, "%s\n", data->name); } static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); @@ -707,7 +701,6 @@ static int __devinit lm78_isa_probe(struct platform_device *pdev) int err; struct lm78_data *data; struct resource *res; - const char *name; /* Reserve the ISA region */ res = platform_get_resource(pdev, IORESOURCE_IO, 0); @@ -721,18 +714,16 @@ static int __devinit lm78_isa_probe(struct platform_device *pdev) goto exit_release_region; } mutex_init(&data->lock); - data->client.addr = res->start; - i2c_set_clientdata(&data->client, data); + data->isa_addr = res->start; platform_set_drvdata(pdev, data); if (lm78_read_value(data, LM78_REG_CHIPID) & 0x80) { data->type = lm79; - name = "lm79"; + data->name = "lm79"; } else { data->type = lm78; - name = "lm78"; + data->name = "lm78"; } - strlcpy(data->client.name, name, I2C_NAME_SIZE); /* Initialize the LM78 chip */ lm78_init_device(data); @@ -763,13 +754,16 @@ static int __devinit lm78_isa_probe(struct platform_device *pdev) static int __devexit lm78_isa_remove(struct platform_device *pdev) { struct lm78_data *data = platform_get_drvdata(pdev); + struct resource *res; hwmon_device_unregister(data->hwmon_dev); sysfs_remove_group(&pdev->dev.kobj, &lm78_group); device_remove_file(&pdev->dev, &dev_attr_name); - release_region(data->client.addr + LM78_ADDR_REG_OFFSET, 2); kfree(data); + res = platform_get_resource(pdev, IORESOURCE_IO, 0); + release_region(res->start + LM78_ADDR_REG_OFFSET, 2); + return 0; } @@ -785,8 +779,8 @@ static int lm78_read_value(struct lm78_data *data, u8 reg) if (!client->driver) { /* ISA device */ int res; mutex_lock(&data->lock); - outb_p(reg, client->addr + LM78_ADDR_REG_OFFSET); - res = inb_p(client->addr + LM78_DATA_REG_OFFSET); + outb_p(reg, data->isa_addr + LM78_ADDR_REG_OFFSET); + res = inb_p(data->isa_addr + LM78_DATA_REG_OFFSET); mutex_unlock(&data->lock); return res; } else @@ -806,8 +800,8 @@ static int lm78_write_value(struct lm78_data *data, u8 reg, u8 value) if (!client->driver) { /* ISA device */ mutex_lock(&data->lock); - outb_p(reg, client->addr + LM78_ADDR_REG_OFFSET); - outb_p(value, client->addr + LM78_DATA_REG_OFFSET); + outb_p(reg, data->isa_addr + LM78_ADDR_REG_OFFSET); + outb_p(value, data->isa_addr + LM78_DATA_REG_OFFSET); mutex_unlock(&data->lock); return 0; } else |