void ux500_suspend_dbg_test_set_wakeup(void) { if (suspend_test_count == 0) return; ux500_rtcrtt_off(); /* Make sure the rtc writes have been accepted */ udelay(120); /* Program RTC to generate an interrupt 1s later */ ux500_rtcrtt_next(1000000); }
static int suspend(bool do_deepsleep) { bool pins_force = pins_suspend_force_mux && pins_suspend_force; int ret = 0; if (sleep_is_blocked()) { pr_info("suspend/resume: interrupted by modem(%d) or event(%d)\n", atomic_read(&block_sleep_modem), atomic_read(&block_sleep_event)); return -EBUSY; } if (has_wake_lock(WAKE_LOCK_SUSPEND)) { pr_info("suspend/resume: wakelock has been locked!\n"); return -EBUSY; } nmk_gpio_clocks_enable(); ux500_suspend_dbg_add_wake_on_uart(); nmk_gpio_wakeups_suspend(); /* configure the prcm for a sleep wakeup */ prcmu_enable_wakeups(PRCMU_WAKEUP(ABB) | PRCMU_WAKEUP(RTC)); ux500_rtcrtt_next_seconds(alarm_sec); context_vape_save(); if (pins_force) { /* * Save GPIO settings before applying power save * settings */ context_gpio_save(); /* Apply GPIO power save mux settings */ context_gpio_mux_safe_switch(true); pins_suspend_force_mux(); context_gpio_mux_safe_switch(false); /* Apply GPIO power save settings */ pins_suspend_force(); } ux500_pm_gic_decouple(); if (ux500_pm_gic_pending_interrupt()) { pr_info("suspend/resume: pending interrupt\n"); /* Recouple GIC with the interrupt bus */ ux500_pm_gic_recouple(); ret = -EBUSY; goto exit; } ux500_pm_prcmu_set_ioforce(true); if (do_deepsleep) { context_varm_save_common(); context_varm_save_core(); context_gic_dist_disable_unneeded_irqs(); context_save_cpu_registers(); /* * Due to we have only 100us between requesting a powerstate * and wfi, we clean the cache before as well to assure the * final cache clean before wfi has as little as possible to * do. */ context_clean_l1_cache_all(); (void) prcmu_set_power_state(PRCMU_AP_DEEP_SLEEP, false, false); context_save_to_sram_and_wfi(true); context_restore_cpu_registers(); context_varm_restore_core(); context_varm_restore_common(); } else { context_clean_l1_cache_all(); (void) prcmu_set_power_state(APEXECUTE_TO_APSLEEP, false, false); dsb(); __asm__ __volatile__("wfi\n\t" : : : "memory"); } context_vape_restore(); /* If GPIO woke us up then save the pins that caused the wake up */ ux500_pm_gpio_save_wake_up_status(); ux500_suspend_dbg_sleep_status(do_deepsleep); /* APE was turned off, restore IO ring */ ux500_pm_prcmu_set_ioforce(false); exit: if (pins_force) { /* Restore gpio settings */ context_gpio_mux_safe_switch(true); context_gpio_restore_mux(); context_gpio_mux_safe_switch(false); context_gpio_restore(); } ux500_rtcrtt_off(); /* This is what cpuidle wants */ prcmu_enable_wakeups(PRCMU_WAKEUP(ARM) | PRCMU_WAKEUP(RTC) | PRCMU_WAKEUP(ABB)); nmk_gpio_wakeups_resume(); ux500_suspend_dbg_remove_wake_on_uart(); nmk_gpio_clocks_disable(); return ret; }