mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-16 01:38:22 +00:00
82 lines
2.8 KiB
C
82 lines
2.8 KiB
C
/*
|
|
* Copyright (C) 2006 Freescale Semiconductor, Inc.
|
|
*
|
|
* Dave Liu <daveliu@freescale.com>
|
|
* based on source code of Shlomi Gridish
|
|
*
|
|
* 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 program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*/
|
|
|
|
#include "common.h"
|
|
#include "asm/errno.h"
|
|
#include "asm/io.h"
|
|
#include "asm/immap_83xx.h"
|
|
|
|
#define NUM_OF_PINS 32
|
|
void qe_config_iopin(u8 port, u8 pin, int dir, int open_drain, int assign)
|
|
{
|
|
u32 pin_2bit_mask;
|
|
u32 pin_2bit_dir;
|
|
u32 pin_2bit_assign;
|
|
u32 pin_1bit_mask;
|
|
u32 tmp_val;
|
|
volatile immap_t *im = (volatile immap_t *)CONFIG_SYS_IMMR;
|
|
volatile qepio83xx_t *par_io = (volatile qepio83xx_t *)&im->qepio;
|
|
|
|
/* Caculate pin location and 2bit mask and dir */
|
|
pin_2bit_mask = (u32)(0x3 << (NUM_OF_PINS-(pin%(NUM_OF_PINS/2)+1)*2));
|
|
pin_2bit_dir = (u32)(dir << (NUM_OF_PINS-(pin%(NUM_OF_PINS/2)+1)*2));
|
|
|
|
/* Setup the direction */
|
|
tmp_val = (pin > (NUM_OF_PINS/2) - 1) ? \
|
|
in_be32(&par_io->ioport[port].dir2) :
|
|
in_be32(&par_io->ioport[port].dir1);
|
|
|
|
if (pin > (NUM_OF_PINS/2) -1) {
|
|
out_be32(&par_io->ioport[port].dir2, ~pin_2bit_mask & tmp_val);
|
|
out_be32(&par_io->ioport[port].dir2, pin_2bit_dir | tmp_val);
|
|
} else {
|
|
out_be32(&par_io->ioport[port].dir1, ~pin_2bit_mask & tmp_val);
|
|
out_be32(&par_io->ioport[port].dir1, pin_2bit_dir | tmp_val);
|
|
}
|
|
|
|
/* Calculate pin location for 1bit mask */
|
|
pin_1bit_mask = (u32)(1 << (NUM_OF_PINS - (pin+1)));
|
|
|
|
/* Setup the open drain */
|
|
tmp_val = in_be32(&par_io->ioport[port].podr);
|
|
if (open_drain) {
|
|
out_be32(&par_io->ioport[port].podr, pin_1bit_mask | tmp_val);
|
|
} else {
|
|
out_be32(&par_io->ioport[port].podr, ~pin_1bit_mask & tmp_val);
|
|
}
|
|
|
|
/* Setup the assignment */
|
|
tmp_val = (pin > (NUM_OF_PINS/2) - 1) ?
|
|
in_be32(&par_io->ioport[port].ppar2):
|
|
in_be32(&par_io->ioport[port].ppar1);
|
|
pin_2bit_assign = (u32)(assign
|
|
<< (NUM_OF_PINS - (pin%(NUM_OF_PINS/2)+1)*2));
|
|
|
|
/* Clear and set 2 bits mask */
|
|
if (pin > (NUM_OF_PINS/2) - 1) {
|
|
out_be32(&par_io->ioport[port].ppar2, ~pin_2bit_mask & tmp_val);
|
|
out_be32(&par_io->ioport[port].ppar2, pin_2bit_assign | tmp_val);
|
|
} else {
|
|
out_be32(&par_io->ioport[port].ppar1, ~pin_2bit_mask & tmp_val);
|
|
out_be32(&par_io->ioport[port].ppar1, pin_2bit_assign | tmp_val);
|
|
}
|
|
}
|