84 lines
2.6 KiB
C
84 lines
2.6 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
|
* \/ \/ \/ \/ \/
|
|
* $Id$
|
|
*
|
|
* Copyright (C) 2021 Aidan MacDonald
|
|
*
|
|
* 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 "gpio-x1000.h"
|
|
#include "kernel.h"
|
|
|
|
#ifndef BOOTLOADER_SPL
|
|
struct mutex gpio_z_mutex;
|
|
#endif
|
|
|
|
void gpio_init(void)
|
|
{
|
|
#ifndef BOOTLOADER_SPL
|
|
mutex_init(&gpio_z_mutex);
|
|
#endif
|
|
|
|
/* Set all pins to input state */
|
|
for(int i = 0; i < 4; ++i) {
|
|
jz_clr(GPIO_INT(GPIO_Z), 0xffffffff);
|
|
jz_set(GPIO_MSK(GPIO_Z), 0xffffffff);
|
|
jz_set(GPIO_PAT1(GPIO_Z), 0xffffffff);
|
|
jz_clr(GPIO_PAT0(GPIO_Z), 0xffffffff);
|
|
REG_GPIO_Z_GID2LD = i;
|
|
}
|
|
|
|
/* Clear flag and disable pull resistor */
|
|
for(int i = 0; i < 4; ++i) {
|
|
jz_clr(GPIO_FLAG(i), 0xffffffff);
|
|
jz_set(GPIO_PULL(i), 0xffffffff);
|
|
}
|
|
}
|
|
|
|
void gpio_lock(void)
|
|
{
|
|
#ifndef BOOTLOADER_SPL
|
|
mutex_lock(&gpio_z_mutex);
|
|
#endif
|
|
}
|
|
|
|
void gpio_unlock(void)
|
|
{
|
|
#ifndef BOOTLOADER_SPL
|
|
mutex_unlock(&gpio_z_mutex);
|
|
#endif
|
|
}
|
|
|
|
void gpio_config(int port, unsigned pinmask, int func)
|
|
{
|
|
unsigned intr = REG_GPIO_INT(port);
|
|
unsigned mask = REG_GPIO_MSK(port);
|
|
unsigned pat1 = REG_GPIO_PAT1(port);
|
|
unsigned pat0 = REG_GPIO_PAT0(port);
|
|
|
|
gpio_lock();
|
|
if(func & 8) jz_set(GPIO_INT(GPIO_Z), (intr & pinmask) ^ pinmask);
|
|
else jz_clr(GPIO_INT(GPIO_Z), (~intr & pinmask) ^ pinmask);
|
|
if(func & 4) jz_set(GPIO_MSK(GPIO_Z), (mask & pinmask) ^ pinmask);
|
|
else jz_clr(GPIO_MSK(GPIO_Z), (~mask & pinmask) ^ pinmask);
|
|
if(func & 2) jz_set(GPIO_PAT1(GPIO_Z), (pat1 & pinmask) ^ pinmask);
|
|
else jz_clr(GPIO_PAT1(GPIO_Z), (~pat1 & pinmask) ^ pinmask);
|
|
if(func & 1) jz_set(GPIO_PAT0(GPIO_Z), (pat0 & pinmask) ^ pinmask);
|
|
else jz_clr(GPIO_PAT0(GPIO_Z), (~pat0 & pinmask) ^ pinmask);
|
|
REG_GPIO_Z_GID2LD = port;
|
|
gpio_unlock();
|
|
gpio_set_pull(port, pinmask, func & 16);
|
|
}
|