2 * Copyright (C) 2006 Freescale Semiconductor, Inc.
4 * Dave Liu <daveliu@freescale.com>
5 * based on source code of Shlomi Gridish
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.
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.
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,
24 #include "asm/errno.h"
26 #include "asm/immap_83xx.h"
28 #if defined(CONFIG_QE)
29 #define NUM_OF_PINS 32
30 void qe_config_iopin(u8 port, u8 pin, int dir, int open_drain, int assign)
37 volatile immap_t *im = (volatile immap_t *)CFG_IMMR;
38 volatile qepio83xx_t *par_io = (volatile qepio83xx_t *)&im->qepio;
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));
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);
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);
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);
57 /* Calculate pin location for 1bit mask */
58 pin_1bit_mask = (u32)(1 << (NUM_OF_PINS - (pin+1)));
60 /* Setup the open drain */
61 tmp_val = in_be32(&par_io->ioport[port].podr);
63 out_be32(&par_io->ioport[port].podr, pin_1bit_mask | tmp_val);
65 out_be32(&par_io->ioport[port].podr, ~pin_1bit_mask & tmp_val);
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));
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);
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);
85 #endif /* CONFIG_QE */