blob: ebe348711200e70be58b91b1d7a5a2fefc89037f [file] [log] [blame]
Dave Liu7737d5c2006-11-03 12:11:15 -06001/*
2 * Copyright (C) 2006 Freescale Semiconductor, Inc.
3 *
4 * Dave Liu <daveliu@freescale.com>
5 * based on source code of Shlomi Gridish
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of
10 * the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
20 * MA 02111-1307 USA
21 */
22
23#include "common.h"
24#include "asm/errno.h"
25#include "asm/io.h"
26#include "asm/immap_83xx.h"
27
28#if defined(CONFIG_QE)
29#define NUM_OF_PINS 32
30void qe_config_iopin(u8 port, u8 pin, int dir, int open_drain, int assign)
31{
32 u32 pin_2bit_mask;
33 u32 pin_2bit_dir;
34 u32 pin_2bit_assign;
35 u32 pin_1bit_mask;
36 u32 tmp_val;
Timur Tabid239d742006-11-03 12:00:28 -060037 volatile immap_t *im = (volatile immap_t *)CFG_IMMR;
Dave Liu7737d5c2006-11-03 12:11:15 -060038 volatile gpio83xx_t *par_io =(volatile gpio83xx_t *)&im->gpio;
39
40 /* Caculate pin location and 2bit mask and dir */
41 pin_2bit_mask = (u32)(0x3 << (NUM_OF_PINS-(pin%(NUM_OF_PINS/2)+1)*2));
42 pin_2bit_dir = (u32)(dir << (NUM_OF_PINS-(pin%(NUM_OF_PINS/2)+1)*2));
43
44 /* Setup the direction */
45 tmp_val = (pin > (NUM_OF_PINS/2) - 1) ? \
46 in_be32(&par_io->ioport[port].dir2) :
47 in_be32(&par_io->ioport[port].dir1);
48
49 if (pin > (NUM_OF_PINS/2) -1) {
50 out_be32(&par_io->ioport[port].dir2, ~pin_2bit_mask & tmp_val);
51 out_be32(&par_io->ioport[port].dir2, pin_2bit_dir | tmp_val);
52 } else {
53 out_be32(&par_io->ioport[port].dir1, ~pin_2bit_mask & tmp_val);
54 out_be32(&par_io->ioport[port].dir1, pin_2bit_dir | tmp_val);
55 }
56
57 /* Calculate pin location for 1bit mask */
58 pin_1bit_mask = (u32)(1 << (NUM_OF_PINS - (pin+1)));
59
60 /* Setup the open drain */
61 tmp_val = in_be32(&par_io->ioport[port].podr);
62 if (open_drain) {
63 out_be32(&par_io->ioport[port].podr, pin_1bit_mask | tmp_val);
64 } else {
65 out_be32(&par_io->ioport[port].podr, ~pin_1bit_mask & tmp_val);
66 }
67
68 /* Setup the assignment */
69 tmp_val = (pin > (NUM_OF_PINS/2) - 1) ?
70 in_be32(&par_io->ioport[port].ppar2):
71 in_be32(&par_io->ioport[port].ppar1);
72 pin_2bit_assign = (u32)(assign
73 << (NUM_OF_PINS - (pin%(NUM_OF_PINS/2)+1)*2));
74
75 /* Clear and set 2 bits mask */
76 if (pin > (NUM_OF_PINS/2) - 1) {
77 out_be32(&par_io->ioport[port].ppar2, ~pin_2bit_mask & tmp_val);
78 out_be32(&par_io->ioport[port].ppar2, pin_2bit_assign | tmp_val);
79 } else {
80 out_be32(&par_io->ioport[port].ppar1, ~pin_2bit_mask & tmp_val);
81 out_be32(&par_io->ioport[port].ppar1, pin_2bit_assign | tmp_val);
82 }
83}
84
85#endif /* CONFIG_QE */