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Commit ed4cebdf authored by Jean Delvare's avatar Jean Delvare Committed by Jean Delvare
Browse files

hwmon: (lm78) Avoid forward declarations 



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

Signed-off-by: default avatarJean Delvare <khali@linux-fr.org>
Cc: Dean Nelson <dnelson@redhat.com>
parent e9b6e9f3

drivers/hwmon/lm78.c

+98 −107
Original line number Diff line number Diff line
@@ -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)

{