+Index: linux-2.6.30.10/drivers/gpio/Kconfig
+===================================================================
+--- linux-2.6.30.10.orig/drivers/gpio/Kconfig 2010-03-24 21:55:56.000000000 +0100
++++ linux-2.6.30.10/drivers/gpio/Kconfig 2010-03-24 21:56:36.000000000 +0100
+@@ -176,4 +176,12 @@
+ SPI driver for Microchip MCP23S08 I/O expander. This provides
+ a GPIO interface supporting inputs and outputs.
+
++comment "EBU GPIO expanders:"
++
++config GPIO_IFXMIPS_EBU
++ boolean "IFXMIPS EBU attached I/O expander"
++ depends on IFXMIPS
++ help
++ This driver allows you to drive latches attached to the SoCc External Bus Unit
++
+ endif
+Index: linux-2.6.30.10/drivers/gpio/Makefile
+===================================================================
+--- linux-2.6.30.10.orig/drivers/gpio/Makefile 2010-03-24 21:55:56.000000000 +0100
++++ linux-2.6.30.10/drivers/gpio/Makefile 2010-03-24 21:56:36.000000000 +0100
+@@ -12,3 +12,4 @@
+ obj-$(CONFIG_GPIO_TWL4030) += twl4030-gpio.o
+ obj-$(CONFIG_GPIO_XILINX) += xilinx_gpio.o
+ obj-$(CONFIG_GPIO_BT8XX) += bt8xxgpio.o
++obj-$(CONFIG_GPIO_IFXMIPS_EBU) += ifxmips_ebu_gpio.o
+Index: linux-2.6.30.10/arch/mips/ifxmips/board.c
+===================================================================
+--- linux-2.6.30.10.orig/arch/mips/ifxmips/board.c 2010-03-25 10:43:06.000000000 +0100
++++ linux-2.6.30.10/arch/mips/ifxmips/board.c 2010-03-25 12:40:54.000000000 +0100
+@@ -111,6 +111,11 @@
+ .name = "ifxmips_wdt",
+ };
+
++static struct platform_device ifxmips_ebu = {
++ .id = 0,
++ .name = "ifxmips_ebu",
++};
++
+ static struct resource ifxmips_mtd_resource = {
+ .start = IFXMIPS_FLASH_START,
+ .end = IFXMIPS_FLASH_START + IFXMIPS_FLASH_MAX - 1,
+@@ -145,10 +150,18 @@
+ static struct gpio_led arv452_gpio_leds[] = {
+ { .name = "ifx:blue:power", .gpio = 3, .active_low = 1, },
+ { .name = "ifx:blue:adsl", .gpio = 4, .active_low = 1, },
+- { .name = "ifx:pink:internet", .gpio = 5, .active_low = 1, },
++ { .name = "ifx:blue:internet", .gpio = 5, .active_low = 1, },
+ { .name = "ifx:red:power", .gpio = 6, .active_low = 1, },
+ { .name = "ifx:yello:wps", .gpio = 7, .active_low = 1, },
+ { .name = "ifx:red:wps", .gpio = 9, .active_low = 1, },
++ { .name = "ifx:blue:voip", .gpio = 32, .active_low = 1, },
++ { .name = "ifx:blue:fxs1", .gpio = 33, .active_low = 1, },
++ { .name = "ifx:blue:fxs2", .gpio = 34, .active_low = 1, },
++ { .name = "ifx:blue:fxo", .gpio = 35, .active_low = 1, },
++ { .name = "ifx:blue:voice", .gpio = 36, .active_low = 1, },
++ { .name = "ifx:blue:usb", .gpio = 37, .active_low = 1, },
++ { .name = "ifx:blue:wlan", .gpio = 38, .active_low = 1, },
++ { .name = "ifx:red:internet", .gpio = 41, .active_low = 1, },
+ };
+
+ static struct gpio_led_platform_data ifxmips_gpio_led_data;
+@@ -205,6 +218,7 @@
+ struct platform_device *arv452_devs[] = {
+ &ifxmips_gpio, &ifxmips_mii, &ifxmips_mtd,
+ &ifxmips_gpio_dev, &ifxmips_wdt, &dwc_usb,
++ &ifxmips_ebu,
+ #ifdef CONFIG_LEDS_GPIO
+ &ifxmips_gpio_leds,
+ #endif
+Index: linux-2.6.30.10/drivers/gpio/ifxmips_ebu_gpio.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.30.10/drivers/gpio/ifxmips_ebu_gpio.c 2010-03-25 12:47:07.000000000 +0100
+@@ -0,0 +1,121 @@
++/*
++ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
++ *
++ * Copyright (C) 2010 John Crispin <blogic@openwrt.org>
++ */
++
++#include <linux/init.h>
++#include <linux/platform_device.h>
++#include <linux/mutex.h>
++#include <linux/gpio.h>
++#include <ifxmips.h>
++
++#define IFXMIPS_EBU_START 0x14000000
++#define IFXMIPS_EBU_MAX 0x00001000
++#define IFXMIPS_EBU_BUSCON 0x1e7ff
++#define IFXMIPS_EBU_WP 0x80000000
++
++static int shadow = (1 << 10) | (1 << 8);
++static void __iomem *virt;
++
++static int
++ifxmips_ebu_direction_input(struct gpio_chip *chip, unsigned offset)
++{
++ return -EINVAL;
++}
++
++static int
++ifxmips_ebu_direction_output(struct gpio_chip *chip, unsigned offset, int value)
++{
++ return 0;
++}
++
++static int
++ifxmips_ebu_get(struct gpio_chip *chip, unsigned offset)
++{
++ return -EINVAL;
++}
++
++static void
++ifxmips_ebu_set(struct gpio_chip *chip, unsigned offset, int value)
++{
++ if(value)
++ shadow |= (1 << offset);
++ else
++ shadow &= ~(1 << offset);
++ ifxmips_w32(IFXMIPS_EBU_BUSCON, IFXMIPS_EBU_BUSCON1);
++ *((__u16*)virt) = shadow;
++ ifxmips_w32(IFXMIPS_EBU_BUSCON | IFXMIPS_EBU_WP, IFXMIPS_EBU_BUSCON1);
++}
++
++static struct gpio_chip
++ifxmips_ebu_chip =
++{
++ .label = "ifxmips_ebu",
++ .direction_input = ifxmips_ebu_direction_input,
++ .direction_output = ifxmips_ebu_direction_output,
++ .set = ifxmips_ebu_set,
++ .get = ifxmips_ebu_get,
++ .base = 32,
++ .ngpio = 16,
++ .can_sleep = 1,
++ .owner = THIS_MODULE,
++};
++
++static int __devinit
++ifxmips_ebu_probe(struct platform_device *dev)
++{
++ ifxmips_w32(IFXMIPS_EBU_START | 0x1, IFXMIPS_EBU_ADDRSEL1);
++ ifxmips_w32(IFXMIPS_EBU_BUSCON | IFXMIPS_EBU_WP, IFXMIPS_EBU_BUSCON1);
++ virt = ioremap_nocache(IFXMIPS_EBU_START, IFXMIPS_EBU_MAX);
++ if(gpiochip_add(&ifxmips_ebu_chip))
++ return -EINVAL;
++ return 0;
++}
++
++static int
++ifxmips_ebu_remove(struct platform_device *dev)
++{
++ return gpiochip_remove(&ifxmips_ebu_chip);
++}
++
++static struct platform_driver
++ifxmips_ebu_driver = {
++ .probe = ifxmips_ebu_probe,
++ .remove = ifxmips_ebu_remove,
++ .driver = {
++ .name = "ifxmips_ebu",
++ .owner = THIS_MODULE,
++ },
++};
++
++static int __init
++ifxmips_ebu_init(void)
++{
++ return platform_driver_register(&ifxmips_ebu_driver);
++}
++
++static void __exit
++ifxmips_ebu_exit(void)
++{
++ platform_driver_unregister(&ifxmips_ebu_driver);
++}
++
++module_init(ifxmips_ebu_init);
++module_exit(ifxmips_ebu_exit);
++
++MODULE_AUTHOR("John Crispin <blogic@openwrt.org>");
++MODULE_LICENSE("GPL v2");
++MODULE_DESCRIPTION("ifxmips - EBU Latch GPIO-Expander");
projects / openwrt.git / commitdiff