| /*************************************************************************** |
| * __________ __ ___. |
| * Open \______ \ ____ ____ | | _\_ |__ _______ ___ |
| * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / |
| * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < |
| * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ |
| * \/ \/ \/ \/ \/ |
| * $Id$ |
| * |
| * Copyright (C) 2010 Marcin Bukat |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version 2 |
| * of the License, or (at your option) any later version. |
| * |
| * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY |
| * KIND, either express or implied. |
| * |
| ****************************************************************************/ |
| |
| #include "config.h" |
| #include "cpu.h" |
| #include <stdbool.h> |
| #include "kernel.h" |
| #include "system.h" |
| #include "power.h" |
| #include "ata-target.h" |
| |
| void ata_reset(void) |
| { |
| /* GPIO19 */ |
| and_l(~(1<<19), &GPIO_OUT); |
| sleep(1); /* > 25us */ |
| |
| or_l((1<<19), &GPIO_OUT); |
| sleep(1); /* > 25us */ |
| } |
| |
| void ata_enable(bool on) |
| { |
| /* GPO36 /reset line of GL811E */ |
| if (on) |
| and_l(~(1<<4), &GPIO1_OUT); |
| else |
| or_l((1<<4), &GPIO1_OUT); |
| |
| or_l((1<<4), &GPIO1_ENABLE); |
| or_l((1<<4), &GPIO1_FUNCTION); |
| } |
| |
| bool ata_is_coldstart(void) |
| { |
| /* check if ATA reset line is configured |
| * as GPIO |
| */ |
| return (GPIO_FUNCTION & (1<<19)) == 0; |
| } |
| |
| void ata_device_init(void) |
| { |
| /* ATA reset line config */ |
| or_l((1<<19), &GPIO_OUT); |
| or_l((1<<19), &GPIO_ENABLE); |
| or_l((1<<19), &GPIO_FUNCTION); |
| } |