FreeCalypso > hg > fc-tourmaline
view src/nucleus/iod.c @ 51:04aaa5622fa7
disable deep sleep when Iota LEDB is on
TI's Iota chip docs say that CLK13M must be running in order for
LEDB to work, and practical experience on Mot C139 which uses
Iota LEDB for its keypad backlight concurs: if Calypso enters
deep sleep while the keypad backlight is turned on, the light
flickers visibly as the chipset goes into and out of deep sleep.
TI's original L1 sleep manager code had logic to disable deep sleep
when LT_Status() returns nonzero, but that function only works
for B-Sample and C-Sample LT, always returns 0 on BOARD 41 - no
check of Iota LEDB status anywhere. Change this code for our
current hardware: disable deep sleep when Iota LEDB has been
turned on through LLS.
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Mon, 19 Oct 2020 05:11:29 +0000 |
| parents | 4e78acac3d88 |
| children |
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/*************************************************************************/ /* */ /* Copyright Mentor Graphics Corporation 2002 */ /* All Rights Reserved. */ /* */ /* THIS WORK CONTAINS TRADE SECRET AND PROPRIETARY INFORMATION WHICH IS */ /* THE PROPERTY OF MENTOR GRAPHICS CORPORATION OR ITS LICENSORS AND IS */ /* SUBJECT TO LICENSE TERMS. */ /* */ /*************************************************************************/ /*************************************************************************/ /* */ /* FILE NAME VERSION */ /* */ /* iod.c Nucleus PLUS 1.14 */ /* */ /* COMPONENT */ /* */ /* IO - Input/Output Driver Management */ /* */ /* DESCRIPTION */ /* */ /* This file contains global data structures for use within the */ /* Input/Output Driver Management component. */ /* */ /* DATA STRUCTURES */ /* */ /* IOD_Created_Drivers_List Pointer to the linked-list */ /* of created I/O drivers */ /* IOD_Total_Drivers Total number of created */ /* I/O drivers */ /* IOD_List_Protect I/O driver list protection */ /* */ /* FUNCTIONS */ /* */ /* None */ /* */ /* DEPENDENCIES */ /* */ /* io_defs.h I/O Driver Management consts */ /* tc_defs.h Thread Control constants */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 03-01-1994 Updated copyright notice, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* 04-17-1996 updated to version 1.2 */ /* 03-24-1998 Released version 1.3 */ /* 03-26-1999 Released 1.11m (new release */ /* numbering scheme) */ /* 04-17-2002 Released version 1.13m */ /* 11-07-2002 Released version 1.14 */ /*************************************************************************/ #define NU_SOURCE_FILE #include "io_defs.h" /* I/O Driver constants */ #include "tc_defs.h" /* Thread control constants */ /* IOD_Created_Drivers_List is the head pointer of the linked list of created I/O drivers. If the list is NU_NULL, there are no I/O drivers created. */ CS_NODE *IOD_Created_Drivers_List; /* IOD_Total_Drivers contains the number of currently created I/O drivers. */ UNSIGNED IOD_Total_Drivers; /* IOD_List_Protect is a list protection structure used to block any other thread from access to the created drivers list. */ TC_PROTECT IOD_List_Protect;