diff options
Diffstat (limited to 'power/hibernate.c')
| -rw-r--r-- | power/hibernate.c | 181 |
1 files changed, 0 insertions, 181 deletions
diff --git a/power/hibernate.c b/power/hibernate.c deleted file mode 100644 index 46c842bce6..0000000000 --- a/power/hibernate.c +++ /dev/null @@ -1,181 +0,0 @@ -/* Copyright 2022 The ChromiumOS Authors - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -#include "console.h" -#include "extpower.h" -#include "hooks.h" -#include "host_command.h" -#include "system.h" -#include "util.h" - -#include <zephyr/init.h> -#include <zephyr/logging/log.h> - -#include <ap_power/ap_power.h> -#include <ap_power/ap_power_interface.h> - -LOG_MODULE_DECLARE(ap_pwrseq, CONFIG_AP_PWRSEQ_LOG_LEVEL); - -/* - * Hibernate processing. - * - * When enabled, the system will be put into an extreme low - * power state after the AP is in G3 for a configurable period of time, - * and there is no external power connected (i.e on battery). - * - * The delay has a configurable default, and may be set dynamically - * via a host command, or an EC console command. A typical delay - * may be 1 hour (3600 seconds). - * - * AP events such as AP_POWER_HARD_OFF are listened for, and - * a timer is used to detect when the AP has been off for the - * selected delay time. If the AP is started again, the timer is canceled. - * Once the timer expires, the system_hibernate() function is called, - * and this will suspend the EC until a wake signal is received. - */ -static uint32_t hibernate_delay = CONFIG_HIBERNATE_DELAY_SEC; - -/* - * Return true if conditions are right for hibernation. - */ -static inline bool ready_to_hibernate(void) -{ - return ap_power_in_or_transitioning_to_state(AP_POWER_STATE_HARD_OFF) && - !extpower_is_present(); -} - -/* - * The AP has been off for the delay period, so hibernate the system, - * if ready. Called from system work queue. - */ -static void hibernate_handler(struct k_work *unused) -{ - if (ready_to_hibernate()) { - LOG_INF("System hibernating due to %d seconds AP off", - hibernate_delay); - system_hibernate(0, 0); - } -} - -K_WORK_DEFINE(hibernate_work, hibernate_handler); - -/* - * Hibernate timer handler. - * Called when timer has expired. - * Schedule hibernate_handler to run via system work queue. - */ -static void timer_handler(struct k_timer *timer) -{ - k_work_submit(&hibernate_work); -} - -K_TIMER_DEFINE(hibernate_timer, timer_handler, NULL); - -/* - * A change has been detected in either the AP state or the - * external power supply. - */ -static void change_detected(void) -{ - if (ready_to_hibernate()) { - /* - * AP is off, and there is no external power. - * Start the timer if it is not already running. - */ - if (k_timer_remaining_get(&hibernate_timer) == 0) { - k_timer_start(&hibernate_timer, - K_SECONDS(hibernate_delay), K_NO_WAIT); - } - - } else { - /* - * AP is either on, or external power is on. - * Either way, no hibernation is done. - * Make sure the timer is not running. - */ - k_timer_stop(&hibernate_timer); - } -} - -static void ap_change(struct ap_power_ev_callback *callback, - struct ap_power_ev_data data) -{ - change_detected(); -} - -/* - * Hook to listen for external power supply changes. - */ -DECLARE_HOOK(HOOK_AC_CHANGE, change_detected, HOOK_PRIO_DEFAULT); - -/* - * EC Console command to get/set the hibernation delay - */ -static int command_hibernation_delay(int argc, const char **argv) -{ - char *e; - uint32_t remaining; - - if (argc >= 2) { - uint32_t s = strtoi(argv[1], &e, 0); - - if (*e) - return EC_ERROR_PARAM1; - - hibernate_delay = s; - } - - /* Print the current setting */ - ccprintf("Hibernation delay: %d s\n", hibernate_delay); - remaining = k_timer_remaining_get(&hibernate_timer); - if (remaining == 0) { - ccprintf("Timer not running\n"); - } else { - ccprintf("Time remaining: %d s\n", remaining / 1000); - } - return EC_SUCCESS; -} -DECLARE_CONSOLE_COMMAND(hibdelay, command_hibernation_delay, "[sec]", - "Set the delay before going into hibernation"); -/* - * Host command to set the hibernation delay - */ -static enum ec_status -host_command_hibernation_delay(struct host_cmd_handler_args *args) -{ - const struct ec_params_hibernation_delay *p = args->params; - struct ec_response_hibernation_delay *r = args->response; - - /* Only change the hibernation delay if seconds is non-zero. */ - if (p->seconds) - hibernate_delay = p->seconds; - - r->hibernate_delay = hibernate_delay; - /* - * It makes no sense to try and set these values since - * they are only valid when the AP is in G3 (so this - * host command will never be called at that point). - */ - r->time_g3 = 0; - r->time_remaining = 0; - - args->response_size = sizeof(struct ec_response_hibernation_delay); - return EC_RES_SUCCESS; -} -DECLARE_HOST_COMMAND(EC_CMD_HIBERNATION_DELAY, host_command_hibernation_delay, - EC_VER_MASK(0)); - -static int hibernate_init(const struct device *unused) -{ - static struct ap_power_ev_callback cb; - - ap_power_ev_init_callback(&cb, ap_change, - AP_POWER_INITIALIZED | AP_POWER_HARD_OFF | - AP_POWER_STARTUP); - ap_power_ev_add_callback(&cb); - return 0; -} - -SYS_INIT(hibernate_init, APPLICATION, CONFIG_APPLICATION_INIT_PRIORITY); |