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hwmon: (lm78) Avoid forward declarations

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Move code around to avoid several forward declarations. Also group
ISA-related functions together, to make future changes easier.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Dean Nelson <dnelson@redhat.com>
tirimbino
Jean Delvare 14 years ago committed by Jean Delvare
parent e9b6e9f3d4
commit ed4cebdf9c
1 changed files with 98 additions and 107 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 205
      drivers/hwmon/lm78.c

205
drivers/hwmon/lm78.c
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@ -143,50 +143,12 @@ struct lm78_data {
};
static int lm78_i2c_detect(struct i2c_client *client,
struct i2c_board_info *info);
static int lm78_i2c_probe(struct i2c_client *client,
const struct i2c_device_id *id);
static int lm78_i2c_remove(struct i2c_client *client);
static int __devinit lm78_isa_probe(struct platform_device *pdev);
static int __devexit lm78_isa_remove(struct platform_device *pdev);
static int lm78_read_value(struct lm78_data *data, u8 reg);
static int lm78_write_value(struct lm78_data *data, u8 reg, u8 value);
static struct lm78_data *lm78_update_device(struct device *dev);
static void lm78_init_device(struct lm78_data *data);
static const struct i2c_device_id lm78_i2c_id[] = {
{ "lm78", lm78 },
{ "lm79", lm79 },
{ }
};
MODULE_DEVICE_TABLE(i2c, lm78_i2c_id);
static struct i2c_driver lm78_driver = {
.class = I2C_CLASS_HWMON,
.driver = {
.name = "lm78",
},
.probe = lm78_i2c_probe,
.remove = lm78_i2c_remove,
.id_table = lm78_i2c_id,
.detect = lm78_i2c_detect,
.address_list = normal_i2c,
};
static struct platform_driver lm78_isa_driver = {
.driver = {
.owner = THIS_MODULE,
.name = "lm78",
},
.probe = lm78_isa_probe,
.remove = __devexit_p(lm78_isa_remove),
};
/* 7 Voltages */
static ssize_t show_in(struct device *dev, struct device_attribute *da,
char *buf)
@ -663,76 +625,24 @@ static int lm78_i2c_remove(struct i2c_client *client)
return 0;
}
static int __devinit lm78_isa_probe(struct platform_device *pdev)
{
int err;
struct lm78_data *data;
struct resource *res;
/* Reserve the ISA region */
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
if (!request_region(res->start + LM78_ADDR_REG_OFFSET, 2, "lm78")) {
err = -EBUSY;
goto exit;
}
if (!(data = kzalloc(sizeof(struct lm78_data), GFP_KERNEL))) {
err = -ENOMEM;
goto exit_release_region;
}
mutex_init(&data->lock);
data->isa_addr = res->start;
platform_set_drvdata(pdev, data);
if (lm78_read_value(data, LM78_REG_CHIPID) & 0x80) {
data->type = lm79;
data->name = "lm79";
} else {
data->type = lm78;
data->name = "lm78";
}
/* Initialize the LM78 chip */
lm78_init_device(data);
/* Register sysfs hooks */
if ((err = sysfs_create_group(&pdev->dev.kobj, &lm78_group))
|| (err = device_create_file(&pdev->dev, &dev_attr_name)))
goto exit_remove_files;
data->hwmon_dev = hwmon_device_register(&pdev->dev);
if (IS_ERR(data->hwmon_dev)) {
err = PTR_ERR(data->hwmon_dev);
goto exit_remove_files;
}
return 0;
exit_remove_files:
sysfs_remove_group(&pdev->dev.kobj, &lm78_group);
device_remove_file(&pdev->dev, &dev_attr_name);
kfree(data);
exit_release_region:
release_region(res->start + LM78_ADDR_REG_OFFSET, 2);
exit:
return err;
}
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);
kfree(data);
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
release_region(res->start + LM78_ADDR_REG_OFFSET, 2);
static const struct i2c_device_id lm78_i2c_id[] = {
{ "lm78", lm78 },
{ "lm79", lm79 },
{ }
};
MODULE_DEVICE_TABLE(i2c, lm78_i2c_id);
return 0;
}
static struct i2c_driver lm78_driver = {
.class = I2C_CLASS_HWMON,
.driver = {
.name = "lm78",
},
.probe = lm78_i2c_probe,
.remove = lm78_i2c_remove,
.id_table = lm78_i2c_id,
.detect = lm78_i2c_detect,
.address_list = normal_i2c,
};
/* The SMBus locks itself, but ISA access must be locked explicitly!
We don't want to lock the whole ISA bus, so we lock each client
@ -849,6 +759,87 @@ static struct lm78_data *lm78_update_device(struct device *dev)
return data;
}
static int __devinit lm78_isa_probe(struct platform_device *pdev)
{
int err;
struct lm78_data *data;
struct resource *res;
/* Reserve the ISA region */
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
if (!request_region(res->start + LM78_ADDR_REG_OFFSET, 2, "lm78")) {
err = -EBUSY;
goto exit;
}
data = kzalloc(sizeof(struct lm78_data), GFP_KERNEL);
if (!data) {
err = -ENOMEM;
goto exit_release_region;
}
mutex_init(&data->lock);
data->isa_addr = res->start;
platform_set_drvdata(pdev, data);
if (lm78_read_value(data, LM78_REG_CHIPID) & 0x80) {
data->type = lm79;
data->name = "lm79";
} else {
data->type = lm78;
data->name = "lm78";
}
/* Initialize the LM78 chip */
lm78_init_device(data);
/* Register sysfs hooks */
if ((err = sysfs_create_group(&pdev->dev.kobj, &lm78_group))
|| (err = device_create_file(&pdev->dev, &dev_attr_name)))
goto exit_remove_files;
data->hwmon_dev = hwmon_device_register(&pdev->dev);
if (IS_ERR(data->hwmon_dev)) {
err = PTR_ERR(data->hwmon_dev);
goto exit_remove_files;
}
return 0;
exit_remove_files:
sysfs_remove_group(&pdev->dev.kobj, &lm78_group);
device_remove_file(&pdev->dev, &dev_attr_name);
kfree(data);
exit_release_region:
release_region(res->start + LM78_ADDR_REG_OFFSET, 2);
exit:
return err;
}
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);
kfree(data);
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
release_region(res->start + LM78_ADDR_REG_OFFSET, 2);
return 0;
}
static struct platform_driver lm78_isa_driver = {
.driver = {
.owner = THIS_MODULE,
.name = "lm78",
},
.probe = lm78_isa_probe,
.remove = __devexit_p(lm78_isa_remove),
};
/* return 1 if a supported chip is found, 0 otherwise */
static int __init lm78_isa_found(unsigned short address)
{

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