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i2c: Delete the i2c-isa pseudo bus driver

Browse Source 
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>
This commit is contained in:
Jean Delvare 2007-07-08 14:26:37 +02:00 committed by Mark M. Hoffman
parent c182f5bbfb
commit e24b8cb4fa
23 changed files with 0 additions and 260 deletions
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9
Documentation/feature-removal-schedule.txt
View File

@ -181,15 +181,6 @@ Who: Kay Sievers <kay.sievers@suse.de>
---------------------------
What: i2c-isa
When: December 2006
Why: i2c-isa is a non-sense and doesn't fit in the device driver
model. Drivers relying on it are better implemented as platform
drivers.
Who: Jean Delvare <khali@linux-fr.org>
---------------------------
What: i2c_adapter.list
When: July 2007
Why: Superfluous, this list duplicates the one maintained by the driver

1
arch/arm/configs/badge4_defconfig
View File

@ -708,7 +708,6 @@ CONFIG_I2C_ALGOPCF=m
# I2C Hardware Bus support
#
CONFIG_I2C_ELEKTOR=m
# CONFIG_I2C_ISA is not set
# CONFIG_I2C_PARPORT is not set
# CONFIG_I2C_PARPORT_LIGHT is not set
# CONFIG_I2C_STUB is not set

1
arch/arm/configs/clps7500_defconfig
View File

@ -536,7 +536,6 @@ CONFIG_I2C_ALGOBIT=y
# I2C Hardware Bus support
#
# CONFIG_I2C_ELEKTOR is not set
# CONFIG_I2C_ISA is not set
# CONFIG_I2C_PARPORT is not set
# CONFIG_I2C_PARPORT_LIGHT is not set
# CONFIG_I2C_PCA_ISA is not set

1
arch/arm/configs/footbridge_defconfig
View File

@ -748,7 +748,6 @@ CONFIG_I2C=m
# CONFIG_I2C_ELEKTOR is not set
# CONFIG_I2C_I801 is not set
# CONFIG_I2C_I810 is not set
# CONFIG_I2C_ISA is not set
# CONFIG_I2C_NFORCE2 is not set
# CONFIG_I2C_PARPORT is not set
# CONFIG_I2C_PARPORT_LIGHT is not set

1
arch/arm/configs/neponset_defconfig
View File

@ -698,7 +698,6 @@ CONFIG_I2C_ALGOBIT=y
# I2C Hardware Bus support
#
# CONFIG_I2C_ELEKTOR is not set
# CONFIG_I2C_ISA is not set
# CONFIG_I2C_PARPORT_LIGHT is not set
# CONFIG_I2C_STUB is not set
# CONFIG_I2C_PCA_ISA is not set

1
arch/arm/configs/picotux200_defconfig
View File

@ -735,7 +735,6 @@ CONFIG_I2C_CHARDEV=m
# I2C Hardware Bus support
#
CONFIG_I2C_AT91=m
CONFIG_I2C_ISA=m
# CONFIG_I2C_OCORES is not set
# CONFIG_I2C_PARPORT_LIGHT is not set
# CONFIG_I2C_STUB is not set

1
arch/arm/configs/rpc_defconfig
View File

@ -558,7 +558,6 @@ CONFIG_I2C_ALGOBIT=y
#
# I2C Hardware Bus support
#
# CONFIG_I2C_ISA is not set
# CONFIG_I2C_PARPORT is not set
# CONFIG_I2C_PARPORT_LIGHT is not set
# CONFIG_I2C_STUB is not set

1
arch/arm/configs/s3c2410_defconfig
View File

@ -826,7 +826,6 @@ CONFIG_I2C_ALGOBIT=m
# I2C Hardware Bus support
#
# CONFIG_I2C_ELEKTOR is not set
CONFIG_I2C_ISA=m
# CONFIG_I2C_OCORES is not set
# CONFIG_I2C_PARPORT is not set
# CONFIG_I2C_PARPORT_LIGHT is not set

1
arch/m32r/m32104ut/defconfig.m32104ut
View File

@ -699,7 +699,6 @@ CONFIG_I2C_ALGOPCF=m
# I2C Hardware Bus support
#
CONFIG_I2C_ELEKTOR=m
CONFIG_I2C_ISA=m
# CONFIG_I2C_OCORES is not set
# CONFIG_I2C_PARPORT is not set
# CONFIG_I2C_PARPORT_LIGHT is not set

1
arch/ppc/configs/ev64260_defconfig
View File

@ -531,7 +531,6 @@ CONFIG_I2C_CHARDEV=m
# CONFIG_I2C_AMD8111 is not set
# CONFIG_I2C_I801 is not set
# CONFIG_I2C_I810 is not set
# CONFIG_I2C_ISA is not set
# CONFIG_I2C_NFORCE2 is not set
# CONFIG_I2C_PARPORT_LIGHT is not set
# CONFIG_I2C_PIIX4 is not set

1
arch/ppc/configs/mpc8540_ads_defconfig
View File

@ -452,7 +452,6 @@ CONFIG_I2C_CHARDEV=y
# CONFIG_I2C_AMD8111 is not set
# CONFIG_I2C_I801 is not set
# CONFIG_I2C_I810 is not set
# CONFIG_I2C_ISA is not set
CONFIG_I2C_MPC=y
# CONFIG_I2C_NFORCE2 is not set
# CONFIG_I2C_PARPORT_LIGHT is not set

1
arch/ppc/configs/mpc8548_cds_defconfig
View File

@ -413,7 +413,6 @@ CONFIG_I2C_CHARDEV=y
#
# I2C Hardware Bus support
#
# CONFIG_I2C_ISA is not set
CONFIG_I2C_MPC=y
# CONFIG_I2C_PARPORT_LIGHT is not set
# CONFIG_I2C_PCA_ISA is not set

1
arch/ppc/configs/mpc8555_cds_defconfig
View File

@ -518,7 +518,6 @@ CONFIG_I2C_CHARDEV=y
# CONFIG_I2C_I801 is not set
# CONFIG_I2C_I810 is not set
# CONFIG_I2C_PIIX4 is not set
# CONFIG_I2C_ISA is not set
CONFIG_I2C_MPC=y
# CONFIG_I2C_NFORCE2 is not set
# CONFIG_I2C_PARPORT_LIGHT is not set

1
arch/ppc/configs/mpc8560_ads_defconfig
View File

@ -489,7 +489,6 @@ CONFIG_I2C_CHARDEV=y
# CONFIG_I2C_I801 is not set
# CONFIG_I2C_I810 is not set
# CONFIG_I2C_PIIX4 is not set
# CONFIG_I2C_ISA is not set
CONFIG_I2C_MPC=y
# CONFIG_I2C_NFORCE2 is not set
# CONFIG_I2C_PARPORT_LIGHT is not set

1
arch/ppc/configs/radstone_ppc7d_defconfig
View File

@ -710,7 +710,6 @@ CONFIG_I2C_CHARDEV=y
# CONFIG_I2C_I801 is not set
# CONFIG_I2C_I810 is not set
# CONFIG_I2C_PIIX4 is not set
# CONFIG_I2C_ISA is not set
# CONFIG_I2C_MPC is not set
# CONFIG_I2C_NFORCE2 is not set
# CONFIG_I2C_PARPORT_LIGHT is not set

1
arch/ppc/configs/stx_gp3_defconfig
View File

@ -661,7 +661,6 @@ CONFIG_I2C_ALGOBIT=m
# CONFIG_I2C_I801 is not set
# CONFIG_I2C_I810 is not set
# CONFIG_I2C_PIIX4 is not set
# CONFIG_I2C_ISA is not set
# CONFIG_I2C_MPC is not set
# CONFIG_I2C_NFORCE2 is not set
# CONFIG_I2C_PARPORT is not set

1
arch/ppc/configs/sycamore_defconfig
View File

@ -461,7 +461,6 @@ CONFIG_I2C_CHARDEV=y
# CONFIG_I2C_I801 is not set
# CONFIG_I2C_I810 is not set
# CONFIG_I2C_IBM_IIC is not set
# CONFIG_I2C_ISA is not set
# CONFIG_I2C_NFORCE2 is not set
# CONFIG_I2C_PARPORT_LIGHT is not set
# CONFIG_I2C_PIIX4 is not set

3
drivers/i2c/busses/Kconfig
View File

@ -236,9 +236,6 @@ config I2C_IOP3XX
This driver can also be built as a module. If so, the module
will be called i2c-iop3xx.
config I2C_ISA
tristate
config I2C_IXP4XX
tristate "IXP4xx GPIO-Based I2C Interface (DEPRECATED)"
depends on ARCH_IXP4XX

1
drivers/i2c/busses/Makefile
View File

@ -18,7 +18,6 @@ obj-$(CONFIG_I2C_I801) += i2c-i801.o
obj-$(CONFIG_I2C_I810) += i2c-i810.o
obj-$(CONFIG_I2C_IBM_IIC) += i2c-ibm_iic.o
obj-$(CONFIG_I2C_IOP3XX) += i2c-iop3xx.o
obj-$(CONFIG_I2C_ISA) += i2c-isa.o
obj-$(CONFIG_I2C_IXP2000) += i2c-ixp2000.o
obj-$(CONFIG_I2C_IXP4XX) += i2c-ixp4xx.o
obj-$(CONFIG_I2C_POWERMAC) += i2c-powermac.o

192
drivers/i2c/busses/i2c-isa.c
View File

@ -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);

2
drivers/i2c/i2c-core.c
View File

@ -286,7 +286,6 @@ void i2c_adapter_dev_release(struct device *dev)
struct i2c_adapter *adap = to_i2c_adapter(dev);
complete(&adap->dev_released);
}
EXPORT_SYMBOL_GPL(i2c_adapter_dev_release); /* exported to i2c-isa */
static ssize_t
show_adapter_name(struct device *dev, struct device_attribute *attr, char *buf)
@ -305,7 +304,6 @@ struct class i2c_adapter_class = {
.name = "i2c-adapter",
.dev_attrs = i2c_adapter_attrs,
};
EXPORT_SYMBOL_GPL(i2c_adapter_class); /* exported to i2c-isa */
static void i2c_scan_static_board_info(struct i2c_adapter *adapter)
{

36
include/linux/i2c-isa.h
View File

@ -1,36 +0,0 @@
/*
* i2c-isa.h - definitions for the i2c-isa pseudo-i2c-adapter interface
*
* Copyright (C) 2005 Jean Delvare <khali@linux-fr.org>
*
* 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.
*/
#ifndef _LINUX_I2C_ISA_H
#define _LINUX_I2C_ISA_H
#include <linux/i2c.h>
extern int i2c_isa_add_driver(struct i2c_driver *driver);
extern int i2c_isa_del_driver(struct i2c_driver *driver);
/* Detect whether we are on the isa bus. This is only useful to hybrid
(i2c+isa) drivers. */
#define i2c_is_isa_adapter(adapptr) \
((adapptr)->id == I2C_HW_ISA)
#define i2c_is_isa_client(clientptr) \
i2c_is_isa_adapter((clientptr)->adapter)
#endif /* _LINUX_I2C_ISA_H */

1
include/linux/i2c.h
View File

@ -362,7 +362,6 @@ struct i2c_client_address_data {
/* The numbers to use to set I2C bus address */
#define ANY_I2C_BUS 0xffff
#define ANY_I2C_ISA_BUS 9191
/* ----- functions exported by i2c.o */