+++ /dev/null
-/*
- * 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) 2004 btxu Generate from INCA-IP project
- * Copyright (C) 2005 Jin-Sze.Sow Comments edited
- * Copyright (C) 2006 Huang Xiaogang Modification & verification on Danube chip
- * Copyright (C) 2007 John Crispin <blogic@openwrt.org>
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/errno.h>
-#include <linux/proc_fs.h>
-#include <linux/init.h>
-#include <linux/ioctl.h>
-#include <linux/timer.h>
-#include <linux/module.h>
-#include <linux/timer.h>
-#include <linux/interrupt.h>
-#include <linux/kobject.h>
-#include <linux/workqueue.h>
-#include <linux/skbuff.h>
-#include <linux/netlink.h>
-#include <linux/platform_device.h>
-#include <linux/uaccess.h>
-#include <linux/semaphore.h>
-#include <linux/gpio.h>
-
-#include <net/sock.h>
-
-#include <ifxmips.h>
-
-#define MAX_PORTS 2
-#define PINS_PER_PORT 16
-
-#define IFXMIPS_GPIO_SANITY {if (port > MAX_PORTS || pin > PINS_PER_PORT) return -EINVAL; }
-
-#define GPIO_TO_PORT(x) ((x > 15) ? (1) : (0))
-#define GPIO_TO_GPIO(x) ((x > 15) ? (x - 16) : (x))
-
-int
-ifxmips_port_reserve_pin(unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- printk(KERN_INFO "%s : call to obseleted function\n", __func__);
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_reserve_pin);
-
-int
-ifxmips_port_free_pin(unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- printk(KERN_INFO "%s : call to obseleted function\n", __func__);
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_free_pin);
-
-int
-ifxmips_port_set_open_drain(unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_OD + (port * 0xC)) | (1 << pin),
- IFXMIPS_GPIO_P0_OD + (port * 0xC));
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_set_open_drain);
-
-int
-ifxmips_port_clear_open_drain(unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_OD + (port * 0xC)) & ~(1 << pin),
- IFXMIPS_GPIO_P0_OD + (port * 0xC));
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_clear_open_drain);
-
-int
-ifxmips_port_set_pudsel(unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_PUDSEL + (port * 0xC)) | (1 << pin),
- IFXMIPS_GPIO_P0_PUDSEL + (port * 0xC));
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_set_pudsel);
-
-int
-ifxmips_port_clear_pudsel(unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_PUDSEL + (port * 0xC)) & ~(1 << pin),
- IFXMIPS_GPIO_P0_PUDSEL + (port * 0xC));
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_clear_pudsel);
-
-int
-ifxmips_port_set_puden(unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_PUDEN + (port * 0xC)) | (1 << pin),
- IFXMIPS_GPIO_P0_PUDEN + (port * 0xC));
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_set_puden);
-
-int
-ifxmips_port_clear_puden(unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_PUDEN + (port * 0xC)) & ~(1 << pin),
- IFXMIPS_GPIO_P0_PUDEN + (port * 0xC));
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_clear_puden);
-
-int
-ifxmips_port_set_stoff(unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_STOFF + (port * 0xC)) | (1 << pin),
- IFXMIPS_GPIO_P0_STOFF + (port * 0xC));
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_set_stoff);
-
-int
-ifxmips_port_clear_stoff(unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_STOFF + (port * 0xC)) & ~(1 << pin),
- IFXMIPS_GPIO_P0_STOFF + (port * 0xC));
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_clear_stoff);
-
-int
-ifxmips_port_set_dir_out(unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_DIR + (port * 0xC)) | (1 << pin),
- IFXMIPS_GPIO_P0_DIR + (port * 0xC));
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_set_dir_out);
-
-int
-ifxmips_port_set_dir_in(unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_DIR + (port * 0xC)) & ~(1 << pin),
- IFXMIPS_GPIO_P0_DIR + (port * 0xC));
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_set_dir_in);
-
-int
-ifxmips_port_set_output(unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_OUT + (port * 0xC)) | (1 << pin),
- IFXMIPS_GPIO_P0_OUT + (port * 0xC));
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_set_output);
-
-int
-ifxmips_port_clear_output(unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_OUT + (port * 0xC)) & ~(1 << pin),
- IFXMIPS_GPIO_P0_OUT + (port * 0xC));
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_clear_output);
-
-int
-ifxmips_port_get_input(unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- if (ifxmips_r32(IFXMIPS_GPIO_P0_IN + (port * 0xC)) & (1 << pin))
- return 0;
- else
- return 1;
-}
-EXPORT_SYMBOL(ifxmips_port_get_input);
-
-int
-ifxmips_port_set_altsel0(unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_ALTSEL0 + (port * 0xC)) | (1 << pin),
- IFXMIPS_GPIO_P0_ALTSEL0 + (port * 0xC));
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_set_altsel0);
-
-int
-ifxmips_port_clear_altsel0(unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_ALTSEL0 + (port * 0xC)) & ~(1 << pin),
- IFXMIPS_GPIO_P0_ALTSEL0 + (port * 0xC));
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_clear_altsel0);
-
-int
-ifxmips_port_set_altsel1(unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_ALTSEL1 + (port * 0xC)) | (1 << pin),
- IFXMIPS_GPIO_P0_ALTSEL1 + (port * 0xC));
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_set_altsel1);
-
-int
-ifxmips_port_clear_altsel1(unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P0_ALTSEL1 + (port * 0xC)) & ~(1 << pin),
- IFXMIPS_GPIO_P0_ALTSEL1 + (port * 0xC));
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_clear_altsel1);
-
-static void
-ifxmips_gpio_set(struct gpio_chip *chip, unsigned int offset, int value)
-{
- int port = GPIO_TO_PORT(offset);
- int gpio = GPIO_TO_GPIO(offset);
- if(value)
- ifxmips_port_set_output(port, gpio);
- else
- ifxmips_port_clear_output(port, gpio);
-}
-
-static int
-ifxmips_gpio_get(struct gpio_chip *chip, unsigned int offset)
-{
- int port = GPIO_TO_PORT(offset);
- int gpio = GPIO_TO_GPIO(offset);
- return ifxmips_port_get_input(port, gpio);
-}
-
-static int
-ifxmips_gpio_direction_input(struct gpio_chip *chip, unsigned int offset)
-{
- int port = GPIO_TO_PORT(offset);
- int gpio = GPIO_TO_GPIO(offset);
- ifxmips_port_set_open_drain(port, gpio);
- ifxmips_port_clear_altsel0(port, gpio);
- ifxmips_port_clear_altsel1(port, gpio);
- ifxmips_port_set_dir_in(port, gpio);
- return 0;
-}
-
-static int
-ifxmips_gpio_direction_output(struct gpio_chip *chip, unsigned int offset, int value)
-{
- int port = GPIO_TO_PORT(offset);
- int gpio = GPIO_TO_GPIO(offset);
- ifxmips_port_clear_open_drain(port, gpio);
- ifxmips_port_clear_altsel0(port, gpio);
- ifxmips_port_clear_altsel1(port, gpio);
- ifxmips_port_set_dir_out(port, gpio);
- ifxmips_gpio_set(chip, offset, value);
- return 0;
-}
-
-int
-gpio_to_irq(unsigned int gpio)
-{
- return -EINVAL;
-}
-EXPORT_SYMBOL(gpio_to_irq);
-
-struct gpio_chip
-ifxmips_gpio_chip =
-{
- .label = "ifxmips-gpio",
- .direction_input = ifxmips_gpio_direction_input,
- .direction_output = ifxmips_gpio_direction_output,
- .get = ifxmips_gpio_get,
- .set = ifxmips_gpio_set,
- .base = 0,
- .ngpio = 32,
-};
-
-static int
-ifxmips_gpio_probe(struct platform_device *dev)
-{
- gpiochip_add(&ifxmips_gpio_chip);
- return 0;
-}
-
-static int
-ifxmips_gpio_remove(struct platform_device *pdev)
-{
- gpiochip_remove(&ifxmips_gpio_chip);
- return 0;
-}
-
-static struct platform_driver
-ifxmips_gpio_driver = {
- .probe = ifxmips_gpio_probe,
- .remove = ifxmips_gpio_remove,
- .driver = {
- .name = "ifxmips_gpio",
- .owner = THIS_MODULE,
- },
-};
-
-int __init
-ifxmips_gpio_init(void)
-{
- int ret = platform_driver_register(&ifxmips_gpio_driver);
- if (ret)
- printk(KERN_INFO "ifxmips_gpio : Error registering platfom driver!");
- return ret;
-}
-
-void __exit
-ifxmips_gpio_exit(void)
-{
- platform_driver_unregister(&ifxmips_gpio_driver);
-}
-
-module_init(ifxmips_gpio_init);
-module_exit(ifxmips_gpio_exit);
projects / openwrt / svn-archive / archive.git / blobdiff