diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/stmf0/ao_gpio.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/src/stmf0/ao_gpio.c b/src/stmf0/ao_gpio.c new file mode 100644 index 00000000..c7bf0797 --- /dev/null +++ b/src/stmf0/ao_gpio.c @@ -0,0 +1,71 @@ +/* + * Copyright © 2016 Keith Packard <keithp@keithp.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; version 2 of the License. + * + * 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. + */ + +#include <ao.h> + +static void +ao_gpio_suspend(void *arg) +{ + struct stm_gpio *port = arg; + if (port == &stm_gpioa) + stm_rcc.ahbenr &= ~(1 << STM_RCC_AHBENR_IOPAEN); + else if ((port) == &stm_gpiob) + stm_rcc.ahbenr &= ~(1 << STM_RCC_AHBENR_IOPBEN); + else if ((port) == &stm_gpioc) + stm_rcc.ahbenr &= ~(1 << STM_RCC_AHBENR_IOPCEN); + else if ((port) == &stm_gpiof) + stm_rcc.ahbenr &= ~(1 << STM_RCC_AHBENR_IOPFEN); +} + +static void +ao_gpio_resume(void *arg) +{ + struct stm_gpio *port = arg; + if (port == &stm_gpioa) + stm_rcc.ahbenr |= (1 << STM_RCC_AHBENR_IOPAEN); + else if ((port) == &stm_gpiob) + stm_rcc.ahbenr |= (1 << STM_RCC_AHBENR_IOPBEN); + else if ((port) == &stm_gpioc) + stm_rcc.ahbenr |= (1 << STM_RCC_AHBENR_IOPCEN); + else if ((port) == &stm_gpiof) + stm_rcc.ahbenr |= (1 << STM_RCC_AHBENR_IOPFEN); +} + +struct ao_power ao_power_gpioa = { + .suspend = ao_gpio_suspend, + .resume = ao_gpio_resume, + .arg = &stm_gpioa +}; + +struct ao_power ao_power_gpiob = { + .suspend = ao_gpio_suspend, + .resume = ao_gpio_resume, + .arg = &stm_gpiob +}; + +struct ao_power ao_power_gpioc = { + .suspend = ao_gpio_suspend, + .resume = ao_gpio_resume, + .arg = &stm_gpioc +}; + +struct ao_power ao_power_gpiof = { + .suspend = ao_gpio_suspend, + .resume = ao_gpio_resume, + .arg = &stm_gpiof +}; + |