Re: [PATCH] i2c driver changes for 2.5.65

Greg KH
2003-03-20T22:26:02Z

ChangeSet 1.1143.1.15, 2003/03/20 11:47:43-08:00, greg@kroah.com

i2c: added i2c-isa bus controller driver.

Based on the i2c cvs version of this driver.

drivers/i2c/busses/Kconfig | 18 ++++++++++++
drivers/i2c/busses/Makefile | 1
drivers/i2c/busses/i2c-isa.c | 62 +++++++++++++++++++++++++++++++++++++++++++
3 files changed, 81 insertions(+)

diff -Nru a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
--- a/drivers/i2c/busses/Kconfig Thu Mar 20 12:53:05 2003
+++ b/drivers/i2c/busses/Kconfig Thu Mar 20 12:53:05 2003
@@ -76,6 +76,24 @@
in the lm_sensors package, which you can download at
http://www.lm-sensors.nu

+config I2C_ISA
+ tristate " ISA Bus support"
+ depends on I2C && I2C_PROC && ISA && EXPERIMENTAL
+ help
+ If you say yes to this option, support will be included for i2c
+ interfaces that are on the ISA bus.
+
+ This can also be built as a module which can be inserted and removed
+ while the kernel is running. If you want to compile it as a module,
+ say M here and read <file:Documentation/modules.txt>.
+
+ The module will be called i2c-isa.
+
+ You will also need the latest user-space utilties: you can find them
+ in the lm_sensors package, which you can download at
+ http://www.lm-sensors.nu
+
+
config I2C_PIIX4
tristate " Intel PIIX4"
depends on I2C && I2C_PROC && PCI && EXPERIMENTAL
diff -Nru a/drivers/i2c/busses/Makefile b/drivers/i2c/busses/Makefile
--- a/drivers/i2c/busses/Makefile Thu Mar 20 12:53:05 2003
+++ b/drivers/i2c/busses/Makefile Thu Mar 20 12:53:05 2003
@@ -6,4 +6,5 @@
obj-$(CONFIG_I2C_AMD756) += i2c-amd756.o
obj-$(CONFIG_I2C_AMD8111) += i2c-amd8111.o
obj-$(CONFIG_I2C_I801) += i2c-i801.o
+obj-$(CONFIG_I2C_ISA) += i2c-isa.o
obj-$(CONFIG_I2C_PIIX4) += i2c-piix4.o
diff -Nru a/drivers/i2c/busses/i2c-isa.c b/drivers/i2c/busses/i2c-isa.c
--- /dev/null Wed Dec 31 16:00:00 1969
+++ b/drivers/i2c/busses/i2c-isa.c Thu Mar 20 12:53:05 2003
@@ -0,0 +1,62 @@
+/*
+ i2c-isa.c - Part of lm_sensors, Linux kernel modules for hardware
+ monitoring
+ 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 algorithm/adapter for ISA bus. Not that this is
+ on first sight very useful; almost no functionality is preserved.
+ Except that it makes writing drivers for chips which can be on both
+ the SMBus and the ISA bus very much easier. See lm78.c for an example
+ of this. */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/i2c.h>
+
+/* This is the actual algorithm we define */
+static struct i2c_algorithm isa_algorithm = {
+ .name = "ISA bus algorithm",
+ .id = I2C_ALGO_ISA,
+};
+
+/* There can only be one... */
+static struct i2c_adapter isa_adapter = {
+ .owner = THIS_MODULE,
+ .name = "ISA main adapter",
+ .id = I2C_ALGO_ISA | I2C_HW_ISA,
+ .algo = &isa_algorithm,
+};
+
+static int __init i2c_isa_init(void)
+{
+ return i2c_add_adapter(&isa_adapter);
+}
+
+static void __exit i2c_isa_exit(void)
+{
+ i2c_del_adapter(&isa_adapter);
+}
+
+MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>");
+MODULE_DESCRIPTION("ISA bus access through i2c");
+MODULE_LICENSE("GPL");
+
+module_init(i2c_isa_init);
+module_exit(i2c_isa_exit);