i2c: Delete the i2c-isa pseudo bus driver

There are no users of i2c-isa left, so we can finally get rid of it.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

1 files changed, 0 insertions, 192 deletions

diff --git a/drivers/i2c/busses/i2c-isa.c b/drivers/i2c/busses/i2c-isa.c
deleted file mode 100644
index b0e1370075d..00000000000
--- a/drivers/i2c/busses/i2c-isa.c
+++ /dev/null
@@ -1,192 +0,0 @@
-/*
-    i2c-isa.c - an i2c-core-like thing for ISA hardware monitoring chips
-    Copyright (C) 2005  Jean Delvare <khali@linux-fr.org>
-
-    Based on the i2c-isa pseudo-adapter from the lm_sensors project
-    Copyright (c) 1998, 1999  Frodo Looijaard <frodol@dds.nl> 
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
-/* This implements an i2c-core-like thing for ISA hardware monitoring
-   chips. Such chips are linked to the i2c subsystem for historical
-   reasons (because the early ISA hardware monitoring chips such as the
-   LM78 had both an I2C and an ISA interface). They used to be
-   registered with the main i2c-core, but as a first step in the
-   direction of a clean separation between I2C and ISA chip drivers,
-   we now have this separate core for ISA ones. It is significantly
-   more simple than the real one, of course, because we don't have to
-   handle multiple busses: there is only one (fake) ISA adapter.
-   It is worth noting that we still rely on i2c-core for some things
-   at the moment - but hopefully this won't last. */
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/i2c.h>
-#include <linux/i2c-isa.h>
-#include <linux/platform_device.h>
-#include <linux/completion.h>
-
-/* Exported by i2c-core for i2c-isa only */
-extern void i2c_adapter_dev_release(struct device *dev);
-extern struct class i2c_adapter_class;
-
-static u32 isa_func(struct i2c_adapter *adapter);
-
-/* This is the actual algorithm we define */
-static const struct i2c_algorithm isa_algorithm = {
-	.functionality	= isa_func,
-};
-
-/* There can only be one... */
-static struct i2c_adapter isa_adapter = {
-	.owner		= THIS_MODULE,
-	.id		= I2C_HW_ISA,
-	.class          = I2C_CLASS_HWMON,
-	.algo		= &isa_algorithm,
-	.name		= "ISA main adapter",
-};
-
-/* We can't do a thing... */
-static u32 isa_func(struct i2c_adapter *adapter)
-{
-	return 0;
-}
-
-
-/* We implement an interface which resembles i2c_{add,del}_driver,
-   but for i2c-isa drivers. We don't have to remember and handle lists
-   of drivers and adapters so this is much more simple, of course. */
-
-int i2c_isa_add_driver(struct i2c_driver *driver)
-{
-	int res;
-
-	/* Add the driver to the list of i2c drivers in the driver core */
-	driver->driver.bus = &i2c_bus_type;
-	res = driver_register(&driver->driver);
-	if (res)
-		return res;
-	dev_dbg(&isa_adapter.dev, "Driver %s registered\n", driver->driver.name);
-
-	/* Now look for clients */
-	res = driver->attach_adapter(&isa_adapter);
-	if (res) {
-		dev_dbg(&isa_adapter.dev,
-			"Driver %s failed to attach adapter, unregistering\n",
-			driver->driver.name);
-		driver_unregister(&driver->driver);
-	}
-	return res;
-}
-
-int i2c_isa_del_driver(struct i2c_driver *driver)
-{
-	struct list_head *item, *_n;
-	struct i2c_client *client;
-	int res;
-
-	/* Detach all clients belonging to this one driver */
-	list_for_each_safe(item, _n, &isa_adapter.clients) {
-		client = list_entry(item, struct i2c_client, list);
-		if (client->driver != driver)
-			continue;
-		dev_dbg(&isa_adapter.dev, "Detaching client %s at 0x%x\n",
-			client->name, client->addr);
-		if ((res = driver->detach_client(client))) {
-			dev_err(&isa_adapter.dev, "Failed, driver "
-				"%s not unregistered!\n",
-				driver->driver.name);
-			return res;
-		}
-	}
-
-	/* Get the driver off the core list */
-	driver_unregister(&driver->driver);
-	dev_dbg(&isa_adapter.dev, "Driver %s unregistered\n", driver->driver.name);
-
-	return 0;
-}
-
-
-static int __init i2c_isa_init(void)
-{
-	int err;
-
-	mutex_init(&isa_adapter.clist_lock);
-	INIT_LIST_HEAD(&isa_adapter.clients);
-
-	isa_adapter.nr = ANY_I2C_ISA_BUS;
-	isa_adapter.dev.parent = &platform_bus;
-	sprintf(isa_adapter.dev.bus_id, "i2c-%d", isa_adapter.nr);
-	isa_adapter.dev.release = &i2c_adapter_dev_release;
-	isa_adapter.dev.class = &i2c_adapter_class;
-	err = device_register(&isa_adapter.dev);
-	if (err) {
-		printk(KERN_ERR "i2c-isa: Failed to register device\n");
-		goto exit;
-	}
-
-	dev_dbg(&isa_adapter.dev, "%s registered\n", isa_adapter.name);
-
-	return 0;
-
-exit:
-	return err;
-}
-
-static void __exit i2c_isa_exit(void)
-{
-#ifdef DEBUG
-	struct list_head  *item, *_n;
-	struct i2c_client *client = NULL;
-#endif
-
-	/* There should be no more active client */
-#ifdef DEBUG
-	dev_dbg(&isa_adapter.dev, "Looking for clients\n");
-	list_for_each_safe(item, _n, &isa_adapter.clients) {
-		client = list_entry(item, struct i2c_client, list);
-		dev_err(&isa_adapter.dev, "Driver %s still has an active "
-			"ISA client at 0x%x\n", client->driver->driver.name,
-			client->addr);
-	}
-	if (client != NULL)
-		return;
-#endif
-
-	/* Clean up the sysfs representation */
-	dev_dbg(&isa_adapter.dev, "Unregistering from sysfs\n");
-	init_completion(&isa_adapter.dev_released);
-	device_unregister(&isa_adapter.dev);
-
-	/* Wait for sysfs to drop all references */
-	dev_dbg(&isa_adapter.dev, "Waiting for sysfs completion\n");
-	wait_for_completion(&isa_adapter.dev_released);
-
-	dev_dbg(&isa_adapter.dev, "%s unregistered\n", isa_adapter.name);
-}
-
-EXPORT_SYMBOL(i2c_isa_add_driver);
-EXPORT_SYMBOL(i2c_isa_del_driver);
-
-MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>");
-MODULE_DESCRIPTION("ISA bus access through i2c");
-MODULE_LICENSE("GPL");
-
-module_init(i2c_isa_init);
-module_exit(i2c_isa_exit);