1 /*
2  * Copyright (C) 2007 Freescale Semiconductor, Inc.
3  *
4  * Tony Li <tony.li@freescale.com>
5  *
6  * This program is free software; you can redistribute it and/or modify it
7  * under the terms of the GNU General Public License version 2 as
8  * published by the Free Software Foundation;
9  */
10 
11 #include <common.h>
12 #include <i2c.h>
13 #include <asm/io.h>
14 
15 #include "pq-mds-pib.h"
16 
17 int pib_init(void)
18 {
19 	u8 val8;
20 	u8 orig_i2c_bus;
21 
22 	/* Switch temporarily to I2C bus #2 */
23 	orig_i2c_bus = i2c_get_bus_num();
24 	i2c_set_bus_num(1);
25 
26 	val8 = 0;
27 #if defined(CONFIG_PCI) && !defined(CONFIG_PCISLAVE)
28 	/* Assign PIB PMC slot to desired PCI bus */
29 	i2c_write(0x23, 0x6, 1, &val8, 1);
30 	i2c_write(0x23, 0x7, 1, &val8, 1);
31 	val8 = 0xff;
32 	i2c_write(0x23, 0x2, 1, &val8, 1);
33 	i2c_write(0x23, 0x3, 1, &val8, 1);
34 
35 	val8 = 0;
36 	i2c_write(0x26, 0x6, 1, &val8, 1);
37 	val8 = 0x34;
38 	i2c_write(0x26, 0x7, 1, &val8, 1);
39 #if defined(CONFIG_MPC832XEMDS)
40 	val8 = 0xf9;            /* PMC2, PMC3 slot to PCI bus */
41 #else
42 	val8 = 0xf3;		/* PMC1, PMC2, PMC3 slot to PCI bus */
43 #endif
44 	i2c_write(0x26, 0x2, 1, &val8, 1);
45 	val8 = 0xff;
46 	i2c_write(0x26, 0x3, 1, &val8, 1);
47 
48 	val8 = 0;
49 	i2c_write(0x27, 0x6, 1, &val8, 1);
50 	i2c_write(0x27, 0x7, 1, &val8, 1);
51 	val8 = 0xff;
52 	i2c_write(0x27, 0x2, 1, &val8, 1);
53 	val8 = 0xef;
54 	i2c_write(0x27, 0x3, 1, &val8, 1);
55 
56 	eieio();
57 
58 #if defined(CONFIG_MPC832XEMDS)
59 	printf("PCI 32bit bus on PMC2 &PMC3\n");
60 #else
61 	printf("PCI 32bit bus on PMC1 & PMC2 &PMC3\n");
62 #endif
63 #endif
64 
65 #if defined(CONFIG_PQ_MDS_PIB_ATM)
66 #if defined(CONFIG_MPC8569MDS)
67 	val8 = 0;
68 	i2c_write(0x20, 0x6, 1, &val8, 1);
69 	i2c_write(0x20, 0x7, 1, &val8, 1);
70 
71 	val8 = 0xdf;
72 	i2c_write(0x20, 0x2, 1, &val8, 1);
73 	val8 = 0xf7;
74 	i2c_write(0x20, 0x3, 1, &val8, 1);
75 
76 	eieio();
77 
78 	printf("QOC3 ATM card on PMC0\n");
79 #elif defined(CONFIG_MPC832XEMDS)
80 	val8 = 0;
81 	i2c_write(0x26, 0x7, 1, &val8, 1);
82 	val8 = 0xf7;
83 	i2c_write(0x26, 0x3, 1, &val8, 1);
84 
85 	val8 = 0;
86 	i2c_write(0x21, 0x6, 1, &val8, 1);
87 	i2c_write(0x21, 0x7, 1, &val8, 1);
88 
89 	val8 = 0xdf;
90 	i2c_write(0x21, 0x2, 1, &val8, 1);
91 	val8 = 0xef;
92 	i2c_write(0x21, 0x3, 1, &val8, 1);
93 
94 	eieio();
95 
96 	printf("QOC3 ATM card on PMC1\n");
97 #endif
98 #endif
99 	/* Reset to original I2C bus */
100 	i2c_set_bus_num(orig_i2c_bus);
101 	return 0;
102 }
103