diff options
Diffstat (limited to 'target/linux/ifxmips/files/arch/mips/include/asm/mach-ifxmips/gpio.h')
-rw-r--r-- | target/linux/ifxmips/files/arch/mips/include/asm/mach-ifxmips/gpio.h | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/target/linux/ifxmips/files/arch/mips/include/asm/mach-ifxmips/gpio.h b/target/linux/ifxmips/files/arch/mips/include/asm/mach-ifxmips/gpio.h new file mode 100644 index 0000000000..fa70ebcac7 --- /dev/null +++ b/target/linux/ifxmips/files/arch/mips/include/asm/mach-ifxmips/gpio.h @@ -0,0 +1,105 @@ +/* + * include/asm-mips/mach-ifxmips/gpio.h + * + * 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) 2007 John Crispin <blogic@openwrt.org> + * + */ + +#ifndef _IFXMIPS_GPIO_H_ +#define _IFXMIPS_GPIO_H_ + +#include <asm/ifxmips/ifxmips.h> +#include <asm/ifxmips/ifxmips_gpio.h> + +#define GPIO_TO_PORT(x) ((x > 15) ? (1) : (0)) +#define GPIO_TO_GPIO(x) ((x > 15) ? (x-16) : (x)) + +static inline int gpio_direction_input(unsigned gpio) +{ + ifxmips_port_set_open_drain(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio)); + ifxmips_port_clear_altsel0(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio)); + ifxmips_port_clear_altsel1(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio)); + ifxmips_port_set_dir_in(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio)); + return 0; +} + +static inline int gpio_direction_output(unsigned gpio, int value) +{ + ifxmips_port_clear_open_drain(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio)); + ifxmips_port_clear_altsel0(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio)); + ifxmips_port_clear_altsel1(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio)); + ifxmips_port_set_dir_out(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio)); + return 0; +} + +static inline int gpio_get_value(unsigned gpio) +{ + ifxmips_port_get_input(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio)); + return 0; +} + +static inline void gpio_set_value(unsigned gpio, int value) +{ + if (value) + ifxmips_port_set_output(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio)); + else + ifxmips_port_clear_output(GPIO_TO_PORT(gpio), + GPIO_TO_GPIO(gpio)); +} + +static inline int gpio_request(unsigned gpio, const char *label) +{ + return 0; +} + +static inline void gpio_free(unsigned gpio) +{ +} + +static inline int gpio_to_irq(unsigned gpio) +{ + return 0; +} + +static inline int irq_to_gpio(unsigned irq) +{ + return 0; +} + +static inline int gpio_cansleep(unsigned gpio) +{ + return 0; +} + +static inline int gpio_get_value_cansleep(unsigned gpio) +{ + might_sleep(); + return gpio_get_value(gpio); +} + +static inline void gpio_set_value_cansleep(unsigned gpio, int value) +{ + might_sleep(); + gpio_set_value(gpio, value); +} + +static inline int gpio_is_valid(int number) +{ + return ((unsigned)number) < 16; +} + +#endif |