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Diffstat (limited to 'recipes/linux/linux-mtx-1-2.4.27/18-i2c-au1x00gpio.patch')
-rw-r--r--recipes/linux/linux-mtx-1-2.4.27/18-i2c-au1x00gpio.patch466
1 files changed, 466 insertions, 0 deletions
diff --git a/recipes/linux/linux-mtx-1-2.4.27/18-i2c-au1x00gpio.patch b/recipes/linux/linux-mtx-1-2.4.27/18-i2c-au1x00gpio.patch
new file mode 100644
index 0000000000..2dccf681eb
--- /dev/null
+++ b/recipes/linux/linux-mtx-1-2.4.27/18-i2c-au1x00gpio.patch
@@ -0,0 +1,466 @@
+diff -urN linux-2.4.27-mtx1-lm_sensors-2.8.8/drivers/i2c/Config.in linux-2.4.27-mtx1-lm_sensors-2.8.8-i2cau1x00gpio/drivers/i2c/Config.in
+--- linux-2.4.27-mtx1-lm_sensors-2.8.8/drivers/i2c/Config.in 2004-12-13 18:03:18.000000000 +0100
++++ linux-2.4.27-mtx1-lm_sensors-2.8.8-i2cau1x00gpio/drivers/i2c/Config.in 2004-12-13 18:11:02.000000000 +0100
+@@ -17,6 +17,11 @@
+ int ' GPIO pin used for SCL' CONFIG_SCx200_I2C_SCL 12
+ int ' GPIO pin used for SDA' CONFIG_SCx200_I2C_SDA 13
+ fi
++ dep_tristate ' I2C using Au1x00 GPIO pins' CONFIG_I2C_AU1X00GPIO $CONFIG_I2C_ALGOBIT
++ if [ "$CONFIG_I2C_AU1X00GPIO" != "n" ]; then
++ int ' GPIO pin used for SCL' CONFIG_I2C_AU1X00GPIO_SCL 206
++ int ' GPIO pin used for SDA' CONFIG_I2C_AU1X00GPIO_SDA 207
++ fi
+ fi
+
+ dep_tristate 'NatSemi SCx200 ACCESS.bus' CONFIG_SCx200_ACB $CONFIG_I2C
+diff -urN linux-2.4.27-mtx1-lm_sensors-2.8.8/drivers/i2c/i2c-au1x00gpio.c linux-2.4.27-mtx1-lm_sensors-2.8.8-i2cau1x00gpio/drivers/i2c/i2c-au1x00gpio.c
+--- linux-2.4.27-mtx1-lm_sensors-2.8.8/drivers/i2c/i2c-au1x00gpio.c 1970-01-01 01:00:00.000000000 +0100
++++ linux-2.4.27-mtx1-lm_sensors-2.8.8-i2cau1x00gpio/drivers/i2c/i2c-au1x00gpio.c 2004-12-13 18:12:50.000000000 +0100
+@@ -0,0 +1,426 @@
++/* ------------------------------------------------------------------------- */
++/* i2c-au1x00gpio.c i2c-hw access for Au1x00 GPIO pins. */
++/* ------------------------------------------------------------------------- */
++/* Copyright (C) 1995-2000 Michael Stickel
++
++ 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. */
++/* ------------------------------------------------------------------------- */
++
++/* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even
++ Frodo Looijaard <frodol@dds.nl>
++ Simon G. Vogl
++*/
++
++/* $Id: i2c-au1x00gpio.c,v 1.1.1.2 2004/01/22 15:35:47 br1 Exp $ */
++
++#include <linux/module.h>
++#include <linux/config.h>
++#include <linux/types.h>
++#include <linux/kernel.h>
++#include <linux/init.h>
++#include <linux/stddef.h>
++#include <linux/ioport.h>
++#include <asm/uaccess.h>
++#include <asm/io.h>
++#include <asm/au1000.h>
++#include <asm/au1000_gpio.h>
++
++#include <linux/slab.h>
++#include <linux/mm.h>
++
++#include <linux/i2c.h>
++#include <linux/i2c-algo-bit.h>
++
++#ifndef __exit
++#define __exit __init
++#endif
++
++
++struct i2c_au1x00gpio
++{
++ struct i2c_au1x00gpio *next;
++
++ short scl_gpio;
++ short sda_gpio;
++
++ unsigned long scl_mask;
++ unsigned long sda_mask;
++
++ struct i2c_adapter adapter;
++ struct i2c_algo_bit_data bit_au1x00gpio_data;
++};
++
++static struct i2c_au1x00gpio *adapter_list;
++
++
++
++/* ----- global defines ----------------------------------------------- */
++#define DEB(x) /* should be reasonable open, close &c. */
++#define DEB2(x) /* low level debugging - very slow */
++#define DEBE(x) x /* error messages */
++
++/* ----- printer port defines ------------------------------------------*/
++
++/* ----- local functions ---------------------------------------------- */
++
++
++//-- Primary GPIO
++static void bit_au1x00gpio_setscl(void *data, int state)
++{
++ struct i2c_au1x00gpio * adapter = (struct i2c_au1x00gpio *)data;
++ if (state)
++ au_writel(adapter->scl_mask, SYS_TRIOUTCLR); // Disable Driver: Switch off Transistor => 1
++ else
++ au_writel(adapter->scl_mask, SYS_OUTPUTCLR); // Clear Output and switch on Transistor => 0
++}
++
++
++static void bit_au1x00gpio_setsda(void *data, int state)
++{
++ struct i2c_au1x00gpio * adapter = (struct i2c_au1x00gpio *)data;
++ if (state)
++ au_writel(adapter->sda_mask, SYS_TRIOUTCLR);
++ else
++ au_writel(adapter->sda_mask, SYS_OUTPUTCLR);
++}
++
++
++static int bit_au1x00gpio_getscl(void *data)
++{
++ struct i2c_au1x00gpio * adapter = (struct i2c_au1x00gpio *)data;
++ return (au_readl(SYS_PINSTATERD) & adapter->scl_mask) ? 1 : 0;
++}
++
++
++static int bit_au1x00gpio_getsda(void *data)
++{
++ struct i2c_au1x00gpio * adapter = (struct i2c_au1x00gpio *)data;
++ return (au_readl(SYS_PINSTATERD) & adapter->sda_mask) ? 1 : 0;
++}
++
++
++
++
++/*--
++ *-- Functions for accessing GPIO-2
++ *--
++ */
++static void bit_au1x00gpio2_setscl(void *data, int state)
++{
++ struct i2c_au1x00gpio * adapter = (struct i2c_au1x00gpio *)data;
++ if (state)
++ {
++ au_writel(au_readl(GPIO2_DIR) & ~adapter->scl_mask, GPIO2_DIR);
++ }
++ else
++ {
++ au_writel(au_readl(GPIO2_OUTPUT) & ~adapter->scl_mask, GPIO2_OUTPUT);
++ au_writel(au_readl(GPIO2_DIR) | adapter->scl_mask, GPIO2_DIR);
++ }
++}
++
++static void bit_au1x00gpio2_setsda(void *data, int state)
++{
++ struct i2c_au1x00gpio * adapter = (struct i2c_au1x00gpio *)data;
++ if (state)
++ {
++ au_writel(au_readl(GPIO2_DIR) & ~adapter->sda_mask, GPIO2_DIR);
++ }
++ else
++ {
++ au_writel(au_readl(GPIO2_OUTPUT) & ~adapter->sda_mask, GPIO2_OUTPUT);
++ au_writel(au_readl(GPIO2_DIR) | adapter->sda_mask, GPIO2_DIR);
++ }
++}
++
++static int bit_au1x00gpio2_getscl(void *data)
++{
++ struct i2c_au1x00gpio * adapter = (struct i2c_au1x00gpio *)data;
++ return (au_readl(GPIO2_PINSTATE) & adapter->scl_mask) ? 1 : 0;
++}
++
++static int bit_au1x00gpio2_getsda(void *data)
++{
++ struct i2c_au1x00gpio * adapter = (struct i2c_au1x00gpio *)data;
++ return (au_readl(GPIO2_PINSTATE) & adapter->sda_mask) ? 1 : 0;
++}
++
++
++
++static int check_i2c_au1x00gpio_adapter(struct i2c_au1x00gpio *adapter)
++{
++ int state = 0;
++
++ adapter->bit_au1x00gpio_data.setsda (adapter, 1);
++ adapter->bit_au1x00gpio_data.setscl (adapter, 1);
++
++ if (adapter->bit_au1x00gpio_data.getsda(adapter)==0)
++ {
++ printk ("i2c-au1x00gpio: sda line should read 1 but reads 0\n");
++ state = -1;
++ }
++ if (adapter->bit_au1x00gpio_data.getscl(adapter)==0)
++ {
++ printk ("i2c-au1x00gpio: scl line should read 1 but reads 0\n");
++ state = -1;
++ }
++
++
++ adapter->bit_au1x00gpio_data.setsda (adapter, 0);
++ adapter->bit_au1x00gpio_data.setscl (adapter, 0);
++
++ if (adapter->bit_au1x00gpio_data.getsda(adapter)==1)
++ {
++ printk ("i2c-au1x00gpio: sda line should read 0 but reads 1\n");
++ state = -1;
++ }
++ if (adapter->bit_au1x00gpio_data.getscl(adapter)==1)
++ {
++ printk ("i2c-au1x00gpio: scl line should read 0 but reads 1\n");
++ state = -1;
++ }
++
++ if (state==0)
++ printk ("i2c-au1x00gpio: adapter with scl=GPIO%d,sda=GPIO%d is working\n",
++ adapter->scl_gpio, adapter->sda_gpio
++ );
++ return state;
++}
++
++
++
++#if 0
++static int bit_au1x00gpio_reg(struct i2c_client *client)
++{
++ return 0;
++}
++
++static int bit_au1x00gpio_unreg(struct i2c_client *client)
++{
++ return 0;
++}
++
++static void bit_au1x00gpio_inc_use(struct i2c_adapter *adap)
++{
++ MOD_INC_USE_COUNT;
++}
++
++static void bit_au1x00gpio_dec_use(struct i2c_adapter *adap)
++{
++ MOD_DEC_USE_COUNT;
++}
++#endif
++
++
++
++static struct i2c_algo_bit_data bit_au1x00gpio_data = {
++ .setsda = bit_au1x00gpio_setsda,
++ .setscl = bit_au1x00gpio_setscl,
++ .getsda = bit_au1x00gpio_getsda,
++ .getscl = bit_au1x00gpio_getscl,
++ .udelay = 80,
++ .mdelay = 80,
++ .timeout = HZ
++};
++
++
++static struct i2c_adapter bit_au1x00gpio_ops = {
++ .owner = THIS_MODULE,
++ .name = "Au1x00 GPIO I2C adapter",
++ .id = I2C_HW_B_AU1x00GPIO,
++};
++
++
++
++/*
++ * scl_gpio:
++ * 0..31 for primary GPIO's
++ * 200..215 for secondary GPIO's
++ *
++ * sda_gpio:
++ * 0..31 for primary GPIO's
++ * 200..215 for secondary GPIO's
++ *
++ * You can even mix primary and secondary GPIO's.
++ * E.g.: i2c_au1x00gpio_create(4,206);
++ */
++
++static int i2c_au1x00gpio_create (int scl_gpio, int sda_gpio)
++{
++ if ((scl_gpio < 32 || (scl_gpio >= 200 && scl_gpio <= 215)) &&
++ (scl_gpio < 32 || (scl_gpio >= 200 && scl_gpio <= 215)))
++ {
++ struct i2c_au1x00gpio *adapter = kmalloc(sizeof(struct i2c_au1x00gpio),
++ GFP_KERNEL);
++ if (!adapter) {
++ printk(KERN_ERR "i2c-au1x00-gpio: Unable to malloc.\n");
++ return -1;
++ }
++
++ printk(KERN_DEBUG "i2c-au1x00-gpio.o: attaching to SCL=GPIO%d, SDA=GPIO%d\n",
++ scl_gpio, sda_gpio);
++
++ memset (adapter, 0, sizeof(struct i2c_au1x00gpio));
++
++ adapter->adapter = bit_au1x00gpio_ops;
++
++ adapter->adapter.algo_data = &adapter->bit_au1x00gpio_data;
++ adapter->bit_au1x00gpio_data = bit_au1x00gpio_data;
++ adapter->bit_au1x00gpio_data.data = adapter;
++
++ adapter->bit_au1x00gpio_data.data = adapter;
++
++ adapter->scl_gpio = scl_gpio;
++ adapter->sda_gpio = sda_gpio;
++
++ if (sda_gpio < 32)
++ {
++ adapter->bit_au1x00gpio_data.setsda = bit_au1x00gpio_setsda;
++ adapter->bit_au1x00gpio_data.getsda = bit_au1x00gpio_getsda;
++ adapter->sda_mask = 1<<sda_gpio;
++ }
++ else if (sda_gpio >= 200 && sda_gpio <= 215)
++ {
++ adapter->bit_au1x00gpio_data.setsda = bit_au1x00gpio2_setsda;
++ adapter->bit_au1x00gpio_data.getsda = bit_au1x00gpio2_getsda;
++ adapter->sda_mask = 1<<(sda_gpio-200);
++ }
++
++
++ if (scl_gpio < 32)
++ {
++ adapter->bit_au1x00gpio_data.setscl = bit_au1x00gpio_setscl;
++ adapter->bit_au1x00gpio_data.getscl = bit_au1x00gpio_getscl;
++ adapter->scl_mask = 1<<scl_gpio;
++ }
++ else if (scl_gpio >= 200 && scl_gpio <= 215)
++ {
++ adapter->bit_au1x00gpio_data.setscl = bit_au1x00gpio2_setscl;
++ adapter->bit_au1x00gpio_data.getscl = bit_au1x00gpio2_getscl;
++ adapter->scl_mask = 1<<(scl_gpio-200);
++ }
++
++ au_writel(0L, SYS_PININPUTEN);
++ if (check_i2c_au1x00gpio_adapter(adapter)==0)
++ {
++ adapter->bit_au1x00gpio_data.setsda (adapter, 1);
++ adapter->bit_au1x00gpio_data.setscl (adapter, 1);
++
++ if (i2c_bit_add_bus(&adapter->adapter) < 0)
++ {
++ printk(KERN_ERR "i2c-au1x00-gpio: Unable to register with I2C.\n");
++ kfree(adapter);
++ return -1; /* No good */
++ }
++
++ adapter->next = adapter_list;
++ adapter_list = adapter;
++ return 0;
++ }
++ }
++ else
++ printk(KERN_ERR "i2c-au1x00-gpio: Invalid argument scl_gpio=%d, sda_gpio=%d.\n", scl_gpio, sda_gpio);
++ return -1;
++}
++
++
++
++static void i2c_au1x00gpio_delete (int scl_gpio, int sda_gpio)
++{
++ struct i2c_au1x00gpio *adapter, *prev = NULL;
++
++ for (adapter = adapter_list; adapter; adapter = adapter->next)
++ {
++ if (adapter->scl_gpio == scl_gpio &&
++ adapter->sda_gpio == sda_gpio)
++ {
++ i2c_bit_del_bus(&adapter->adapter);
++ if (prev)
++ prev->next = adapter->next;
++ else
++ adapter_list = adapter->next;
++ kfree(adapter);
++ return;
++ }
++ prev = adapter;
++ }
++}
++
++
++
++
++
++#ifndef CONFIG_I2C_AU1X00GPIO_SCL
++#define CONFIG_I2C_AU1X00GPIO_SCL (216)
++#endif
++
++#ifndef CONFIG_I2C_AU1X00GPIO_SDA
++#define CONFIG_I2C_AU1X00GPIO_SDA (217)
++#endif
++
++static int au1x00gpiopin_scl = CONFIG_I2C_AU1X00GPIO_SCL;
++static int au1x00gpiopin_sda = CONFIG_I2C_AU1X00GPIO_SDA;
++
++
++
++int __init i2c_bit_au1x00gpio_init(void)
++{
++ printk(KERN_INFO "i2c-au1x00gpio.o: i2c Au1x00 GPIO adapter module version %s (%s)\n", I2C_VERSION, I2C_DATE);
++
++ if (i2c_au1x00gpio_create (au1x00gpiopin_scl, au1x00gpiopin_sda) == 0)
++ {
++ printk(KERN_INFO "i2c-au1x00gpio.o: registered I2C-Bus for GPIO%d,GPIO%d\n",
++ au1x00gpiopin_scl, au1x00gpiopin_sda
++ );
++ return 0;
++ }
++ printk(KERN_INFO "i2c-au1x00gpio.o: failed to register I2C-Bus for GPIO%d,GPIO%d\n",
++ au1x00gpiopin_scl, au1x00gpiopin_sda
++ );
++ return -1;
++}
++
++
++void __exit i2c_bit_au1x00gpio_exit(void)
++{
++ i2c_au1x00gpio_delete (au1x00gpiopin_scl, au1x00gpiopin_sda);
++}
++
++
++
++EXPORT_NO_SYMBOLS;
++
++MODULE_PARM(au1x00gpiopin_scl, "i");
++MODULE_PARM_DESC(au1x00gpiopin_scl, "GPIO pin number used for SCL pin.");
++
++MODULE_PARM(au1x00gpiopin_sda, "i");
++MODULE_PARM_DESC(au1x00gpiopin_sda, "GPIO pin number used for SDA pin.");
++
++MODULE_AUTHOR("Michael Stickel <michael@cubic.org>");
++MODULE_DESCRIPTION("I2C-Bus adapter routines for Au1x00 GPIO adapter.");
++MODULE_LICENSE("GPL");
++
++
++#ifdef MODULE
++int init_module(void)
++{
++ return i2c_bit_au1x00gpio_init();
++}
++
++void cleanup_module(void)
++{
++ i2c_bit_au1x00gpio_exit();
++}
++#endif
+diff -urN linux-2.4.27-mtx1-lm_sensors-2.8.8/drivers/i2c/Makefile linux-2.4.27-mtx1-lm_sensors-2.8.8-i2cau1x00gpio/drivers/i2c/Makefile
+--- linux-2.4.27-mtx1-lm_sensors-2.8.8/drivers/i2c/Makefile 2004-12-13 18:03:18.000000000 +0100
++++ linux-2.4.27-mtx1-lm_sensors-2.8.8-i2cau1x00gpio/drivers/i2c/Makefile 2004-12-13 18:11:59.000000000 +0100
+@@ -25,6 +25,7 @@
+ obj-$(CONFIG_I2C_ALGO_SIBYTE) += i2c-algo-sibyte.o i2c-sibyte.o
+ obj-$(CONFIG_I2C_MAX1617) += i2c-max1617.o
+ obj-$(CONFIG_I2C_ALGO_SGI) += i2c-algo-sgi.o
++obj-$(CONFIG_I2C_AU1X00GPIO) += i2c-au1x00gpio.o
+ obj-$(CONFIG_I2C_ALGO_AU1550) += i2c-algo-au1550.o i2c-au1550.o
+
+ # This is needed for automatic patch generation: sensors code starts here
+--- linux-2.4.27-mtx1-lm_sensors-2.8.8/include/linux/i2c-id.h 2004-12-13 21:09:52.000000000 +0100
++++ linux-2.4.27-mtx1-lm_sensors-2.8.8-i2cau1x00gpio/include/linux/i2c-id.h 2004-12-13 21:36:14.000000000 +0100
+@@ -242,6 +242,7 @@
+ #define I2C_HW_B_S3VIA 0x18 /* S3Via ProSavage adapter */
+ #define I2C_HW_B_ZR36067 0x19 /* Zoran-36057/36067 based boards */
+ #define I2C_HW_B_PCILYNX 0x1a /* TI PCILynx I2C adapter */
++#define I2C_HW_B_AU1x00GPIO 0x1b /* Au1x00 GPIO adapter */
+
+ /* --- PCF 8584 based algorithms */
+ #define I2C_HW_P_LP 0x00 /* Parallel port interface */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-21 20:15:11 +0000