diff options
Diffstat (limited to 'target/linux/ifxmips/files-2.6.32/arch/mips/ifxmips/common/gpio.c')
| -rw-r--r-- | target/linux/ifxmips/files-2.6.32/arch/mips/ifxmips/common/gpio.c | 345 |
1 files changed, 0 insertions, 345 deletions
diff --git a/target/linux/ifxmips/files-2.6.32/arch/mips/ifxmips/common/gpio.c b/target/linux/ifxmips/files-2.6.32/arch/mips/ifxmips/common/gpio.c deleted file mode 100644 index 1ac00de..0000000 --- a/target/linux/ifxmips/files-2.6.32/arch/mips/ifxmips/common/gpio.c +++ /dev/null @@ -1,345 +0,0 @@ -/* - * 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); |