diff options
| author | Nandor Han <nandor.han@vaisala.com> | 2021-06-10 16:56:44 +0300 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2021-07-23 10:16:39 -0400 |
| commit | f9db2f16cb6fc7b6d05b0e70de65881bc97ba5c2 (patch) | |
| tree | 9058e40bb65185f1367697ce8cf33479a23362dc /include/reboot-mode | |
| parent | 2541ce2c1af87f74a9feb35a1cbfc20ff8d04e4b (diff) | |
| download | u-boot-f9db2f16cb6fc7b6d05b0e70de65881bc97ba5c2.tar.gz | |
reboot-mode: read the boot mode from GPIOs status
A use case for controlling the boot mode is when the user wants
to control the device boot by pushing a button without needing to
go in user-space.
Add a new backed for reboot mode where GPIOs are used to control the
reboot-mode. The driver is able to scan a predefined list of GPIOs
and return the magic value. Having the modes associated with
the magic value generated based on the GPIO values, allows the
reboot mode uclass to select the proper mode.
Signed-off-by: Nandor Han <nandor.han@vaisala.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'include/reboot-mode')
| -rw-r--r-- | include/reboot-mode/reboot-mode-gpio.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/include/reboot-mode/reboot-mode-gpio.h b/include/reboot-mode/reboot-mode-gpio.h new file mode 100644 index 0000000000..16b1185c69 --- /dev/null +++ b/include/reboot-mode/reboot-mode-gpio.h @@ -0,0 +1,32 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (c) Vaisala Oyj. + */ + +#ifndef REBOOT_MODE_REBOOT_MODE_GPIO_H_ +#define REBOOT_MODE_REBOOT_MODE_GPIO_H_ + +#include <asm/gpio.h> + +/* + * In case of initializing the driver statically (using U_BOOT_DEVICE macro), + * we can use this struct to declare the pins used. + */ + +#if !CONFIG_IS_ENABLED(OF_CONTROL) +struct reboot_mode_gpio_config { + int gpio_dev_offset; + int gpio_offset; + int flags; +}; +#endif + +struct reboot_mode_gpio_platdata { + struct gpio_desc *gpio_desc; +#if !CONFIG_IS_ENABLED(OF_CONTROL) + struct reboot_mode_gpio_config *gpios_config; +#endif + int gpio_count; +}; + +#endif /* REBOOT_MODE_REBOOT_MODE_GPIO_H_ */ |