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1 | /* |
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 | ||
7737d5c6 DL |
28 | #define NUM_OF_PINS 32 |
29 | void qe_config_iopin(u8 port, u8 pin, int dir, int open_drain, int assign) | |
30 | { | |
31 | u32 pin_2bit_mask; | |
32 | u32 pin_2bit_dir; | |
33 | u32 pin_2bit_assign; | |
34 | u32 pin_1bit_mask; | |
35 | u32 tmp_val; | |
6d0f6bcf | 36 | volatile immap_t *im = (volatile immap_t *)CONFIG_SYS_IMMR; |
e080313c | 37 | volatile qepio83xx_t *par_io = (volatile qepio83xx_t *)&im->qepio; |
7737d5c6 DL |
38 | |
39 | /* Caculate pin location and 2bit mask and dir */ | |
40 | pin_2bit_mask = (u32)(0x3 << (NUM_OF_PINS-(pin%(NUM_OF_PINS/2)+1)*2)); | |
41 | pin_2bit_dir = (u32)(dir << (NUM_OF_PINS-(pin%(NUM_OF_PINS/2)+1)*2)); | |
42 | ||
43 | /* Setup the direction */ | |
44 | tmp_val = (pin > (NUM_OF_PINS/2) - 1) ? \ | |
45 | in_be32(&par_io->ioport[port].dir2) : | |
46 | in_be32(&par_io->ioport[port].dir1); | |
47 | ||
48 | if (pin > (NUM_OF_PINS/2) -1) { | |
49 | out_be32(&par_io->ioport[port].dir2, ~pin_2bit_mask & tmp_val); | |
50 | out_be32(&par_io->ioport[port].dir2, pin_2bit_dir | tmp_val); | |
51 | } else { | |
52 | out_be32(&par_io->ioport[port].dir1, ~pin_2bit_mask & tmp_val); | |
53 | out_be32(&par_io->ioport[port].dir1, pin_2bit_dir | tmp_val); | |
54 | } | |
55 | ||
56 | /* Calculate pin location for 1bit mask */ | |
57 | pin_1bit_mask = (u32)(1 << (NUM_OF_PINS - (pin+1))); | |
58 | ||
59 | /* Setup the open drain */ | |
60 | tmp_val = in_be32(&par_io->ioport[port].podr); | |
61 | if (open_drain) { | |
62 | out_be32(&par_io->ioport[port].podr, pin_1bit_mask | tmp_val); | |
63 | } else { | |
64 | out_be32(&par_io->ioport[port].podr, ~pin_1bit_mask & tmp_val); | |
65 | } | |
66 | ||
67 | /* Setup the assignment */ | |
68 | tmp_val = (pin > (NUM_OF_PINS/2) - 1) ? | |
69 | in_be32(&par_io->ioport[port].ppar2): | |
70 | in_be32(&par_io->ioport[port].ppar1); | |
71 | pin_2bit_assign = (u32)(assign | |
72 | << (NUM_OF_PINS - (pin%(NUM_OF_PINS/2)+1)*2)); | |
73 | ||
74 | /* Clear and set 2 bits mask */ | |
75 | if (pin > (NUM_OF_PINS/2) - 1) { | |
76 | out_be32(&par_io->ioport[port].ppar2, ~pin_2bit_mask & tmp_val); | |
77 | out_be32(&par_io->ioport[port].ppar2, pin_2bit_assign | tmp_val); | |
78 | } else { | |
79 | out_be32(&par_io->ioport[port].ppar1, ~pin_2bit_mask & tmp_val); | |
80 | out_be32(&par_io->ioport[port].ppar1, pin_2bit_assign | tmp_val); | |
81 | } | |
82 | } |