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_85xx.h"
27
28 #if defined(CONFIG_QE)
29 #define NUM_OF_PINS 32
qe_config_iopin(u8 port,u8 pin,int dir,int open_drain,int assign)30 void 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;
37 volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
38 volatile par_io_t *par_io = (volatile par_io_t *)
39 &(gur->qe_par_io);
40
41 /* Caculate pin location and 2bit mask and dir */
42 pin_2bit_mask = (u32)(0x3 << (NUM_OF_PINS-(pin%(NUM_OF_PINS/2)+1)*2));
43 pin_2bit_dir = (u32)(dir << (NUM_OF_PINS-(pin%(NUM_OF_PINS/2)+1)*2));
44
45 /* Setup the direction */
46 tmp_val = (pin > (NUM_OF_PINS/2) - 1) ? \
47 in_be32(&par_io[port].cpdir2) :
48 in_be32(&par_io[port].cpdir1);
49
50 if (pin > (NUM_OF_PINS/2) -1) {
51 out_be32(&par_io[port].cpdir2, ~pin_2bit_mask & tmp_val);
52 out_be32(&par_io[port].cpdir2, pin_2bit_dir | tmp_val);
53 } else {
54 out_be32(&par_io[port].cpdir1, ~pin_2bit_mask & tmp_val);
55 out_be32(&par_io[port].cpdir1, pin_2bit_dir | tmp_val);
56 }
57
58 /* Calculate pin location for 1bit mask */
59 pin_1bit_mask = (u32)(1 << (NUM_OF_PINS - (pin+1)));
60
61 /* Setup the open drain */
62 tmp_val = in_be32(&par_io[port].cpodr);
63 if (open_drain)
64 out_be32(&par_io[port].cpodr, pin_1bit_mask | tmp_val);
65 else
66 out_be32(&par_io[port].cpodr, ~pin_1bit_mask & tmp_val);
67
68 /* Setup the assignment */
69 tmp_val = (pin > (NUM_OF_PINS/2) - 1) ?
70 in_be32(&par_io[port].cppar2):
71 in_be32(&par_io[port].cppar1);
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[port].cppar2, ~pin_2bit_mask & tmp_val);
78 out_be32(&par_io[port].cppar2, pin_2bit_assign | tmp_val);
79 } else {
80 out_be32(&par_io[port].cppar1, ~pin_2bit_mask & tmp_val);
81 out_be32(&par_io[port].cppar1, pin_2bit_assign | tmp_val);
82 }
83 }
84
85 #endif /* CONFIG_QE */
86