FreeCalypso > hg > fc-tourmaline
view src/cs/drivers/drv_app/kpd/kpd_power_api.c @ 281:a75eefbf8be4
Phone boot with PWON: weed out short button presses
Every standard end user phone has a design provision, most naturally
implemented in firmware, whereby the PWON button effects a boot only
if it is held down long enough - short presses of this PWON button
are detected, assumed to be spurious and cause the fw to power back off
instead of proceeding with boot. The present change introduces this
standard function in FreeCalypso.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Fri, 24 Sep 2021 02:03:08 +0000 |
parents | 4e78acac3d88 |
children |
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/** * @file kpd_power_api.c * * Implementation of bridge function for PWR SWE interface. * * @author Laurent Sollier (l-sollier@ti.com) * @version 0.1 */ /* * History: * * Date Author Modification * ---------------------------------------- * 11/02/2001 L Sollier Create * * * (C) Copyright 2001 by Texas Instruments Incorporated, All Rights Reserved */ #include "kpd/kpd_power_api.h" #include "kpd/kpd_messages_i.h" #include "kpd/kpd_physical_key_def.h" #include "kpd/kpd_env.h" #include "rvm/rvm_use_id_list.h" /* External declaration */ extern T_KPD_ENV_CTRL_BLK* kpd_env_ctrl_blk; /* This variable ius defined here but is used by the PWR SWE */ T_KPD_KEYPAD Kp = {0}; /** * @name Functions implementation * */ /*@{*/ /** * function: kpd_power_key_pressed */ T_RV_RET kpd_power_key_pressed(void) { T_RV_RET ret = RV_OK; T_RVF_MB_STATUS mb_status; T_KPD_KEY_PRESSED_MSG* msg_key_pressed; /* Check if initialization has been correctly done */ if ( (kpd_env_ctrl_blk == 0) || (kpd_env_ctrl_blk->swe_is_initialized == FALSE) ) { KPD_SEND_TRACE("KPD: Initialization is not yet done or failed", RV_TRACE_LEVEL_ERROR); return RV_INTERNAL_ERR; } /* Reserve memory for message */ mb_status = rvf_get_buf (kpd_env_ctrl_blk->prim_id, sizeof(T_KPD_KEY_PRESSED_MSG), (void **) &msg_key_pressed); if (mb_status == RVF_GREEN) /* Memory allocation success */ { /* Fill the message */ msg_key_pressed->hdr.msg_id = KPD_KEY_PRESSED_MSG; msg_key_pressed->value = KPD_SHORT_PRESS_PWR_KEY; msg_key_pressed->key_to_process = TRUE; /* Send message to the keypad task */ rvf_send_msg(kpd_env_ctrl_blk->addr_id, msg_key_pressed); } else { KPD_SEND_TRACE("KPD: Memory allocation error", RV_TRACE_LEVEL_ERROR); if (mb_status == RVF_YELLOW) rvf_free_buf(msg_key_pressed); ret = RV_MEMORY_ERR; } return ret; } /*@}*/