diff options
Diffstat (limited to 'carl9170fw/carlfw/src/gpio.c')
| -rw-r--r-- | carl9170fw/carlfw/src/gpio.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/carl9170fw/carlfw/src/gpio.c b/carl9170fw/carlfw/src/gpio.c new file mode 100644 index 0000000..85cd81f --- /dev/null +++ b/carl9170fw/carlfw/src/gpio.c @@ -0,0 +1,52 @@ +/* + * carl9170 firmware - used by the ar9170 wireless device + * + * GPIO interrupt service + * + * Copyright (c) 2000-2005 ZyDAS Technology Corporation + * Copyright (c) 2007-2009 Atheros Communications, Inc. + * Copyright 2009 Johannes Berg <johannes@sipsolutions.net> + * Copyright 2009-2011 Christian Lamparter <chunkeey@googlemail.com> + * + * 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., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "carl9170.h" +#include "gpio.h" + +#ifdef CONFIG_CARL9170FW_GPIO_INTERRUPT +void gpio_timer(void) +{ + uint32_t cur; + + cur = get(AR9170_GPIO_REG_PORT_DATA) & CARL9170_GPIO_MASK; + + if (cur != fw.cached_gpio_state.gpio) { + fw.cached_gpio_state.gpio = cur; + + send_cmd_to_host(sizeof(struct carl9170_gpio), + CARL9170_RSP_GPIO, 0x00, + (uint8_t *)&fw.cached_gpio_state); + +# ifdef CONFIG_CARL9170FW_WATCHDOG_BUTTON + for (;;) { + /* + * Loop forever... Until the watchdog triggers. + */ + } +# endif /* CONFIG_CARL9170FW_WATCHDOG_BUTTON */ + } +} +#endif /* CONFIG_CARL9170FW_GPIO_INTERRUPT */ |