Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * linux/drivers/pcmcia/sa1100_badge4.c | |
3 | * | |
4 | * BadgePAD 4 PCMCIA specific routines | |
5 | * | |
6 | * Christopher Hoover <ch@hpl.hp.com> | |
7 | * | |
8 | * Copyright (C) 2002 Hewlett-Packard Company | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License version 2 as | |
12 | * published by the Free Software Foundation. | |
13 | * | |
14 | */ | |
15 | #include <linux/module.h> | |
16 | #include <linux/kernel.h> | |
17 | #include <linux/sched.h> | |
18 | #include <linux/device.h> | |
19 | #include <linux/errno.h> | |
20 | #include <linux/init.h> | |
21 | ||
22 | #include <asm/hardware.h> | |
23 | #include <asm/mach-types.h> | |
24 | #include <asm/arch/badge4.h> | |
25 | #include <asm/hardware/sa1111.h> | |
26 | ||
27 | #include "sa1111_generic.h" | |
28 | ||
29 | /* | |
30 | * BadgePAD 4 Details | |
31 | * | |
32 | * PCM Vcc: | |
33 | * | |
34 | * PCM Vcc on BadgePAD 4 can be jumpered for 3v3 (short pins 1 and 3 | |
35 | * on JP6) or 5v0 (short pins 3 and 5 on JP6). | |
36 | * | |
37 | * PCM Vpp: | |
38 | * | |
39 | * PCM Vpp on BadgePAD 4 can be jumpered for 12v0 (short pins 4 and 6 | |
40 | * on JP6) or tied to PCM Vcc (short pins 2 and 4 on JP6). N.B., | |
41 | * 12v0 operation requires that the power supply actually supply 12v0 | |
42 | * via pin 7 of JP7. | |
43 | * | |
44 | * CF Vcc: | |
45 | * | |
46 | * CF Vcc on BadgePAD 4 can be jumpered either for 3v3 (short pins 1 | |
47 | * and 2 on JP10) or 5v0 (short pins 2 and 3 on JP10). | |
48 | * | |
49 | * Unfortunately there's no way programmatically to determine how a | |
50 | * given board is jumpered. This code assumes a default jumpering | |
51 | * as described below. | |
52 | * | |
53 | * If the defaults aren't correct, you may override them with a pcmv | |
54 | * setup argument: pcmv=<pcm vcc>,<pcm vpp>,<cf vcc>. The units are | |
55 | * tenths of volts; e.g. pcmv=33,120,50 indicates 3v3 PCM Vcc, 12v0 | |
56 | * PCM Vpp, and 5v0 CF Vcc. | |
57 | * | |
58 | */ | |
59 | ||
60 | static int badge4_pcmvcc = 50; /* pins 3 and 5 jumpered on JP6 */ | |
61 | static int badge4_pcmvpp = 50; /* pins 2 and 4 jumpered on JP6 */ | |
62 | static int badge4_cfvcc = 33; /* pins 1 and 2 jumpered on JP10 */ | |
63 | ||
64 | static void complain_about_jumpering(const char *whom, | |
65 | const char *supply, | |
66 | int given, int wanted) | |
67 | { | |
68 | printk(KERN_ERR | |
69 | "%s: %s %d.%dV wanted but board is jumpered for %s %d.%dV operation" | |
70 | "; re-jumper the board and/or use pcmv=xx,xx,xx\n", | |
71 | whom, supply, | |
72 | wanted / 10, wanted % 10, | |
73 | supply, | |
74 | given / 10, given % 10); | |
75 | } | |
76 | ||
77 | static int | |
78 | badge4_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state) | |
79 | { | |
80 | int ret; | |
81 | ||
82 | switch (skt->nr) { | |
83 | case 0: | |
84 | if ((state->Vcc != 0) && | |
85 | (state->Vcc != badge4_pcmvcc)) { | |
86 | complain_about_jumpering(__FUNCTION__, "pcmvcc", | |
87 | badge4_pcmvcc, state->Vcc); | |
88 | // Apply power regardless of the jumpering. | |
89 | // return -1; | |
90 | } | |
91 | if ((state->Vpp != 0) && | |
92 | (state->Vpp != badge4_pcmvpp)) { | |
93 | complain_about_jumpering(__FUNCTION__, "pcmvpp", | |
94 | badge4_pcmvpp, state->Vpp); | |
95 | return -1; | |
96 | } | |
97 | break; | |
98 | ||
99 | case 1: | |
100 | if ((state->Vcc != 0) && | |
101 | (state->Vcc != badge4_cfvcc)) { | |
102 | complain_about_jumpering(__FUNCTION__, "cfvcc", | |
103 | badge4_cfvcc, state->Vcc); | |
104 | return -1; | |
105 | } | |
106 | break; | |
107 | ||
108 | default: | |
109 | return -1; | |
110 | } | |
111 | ||
112 | ret = sa1111_pcmcia_configure_socket(skt, state); | |
113 | if (ret == 0) { | |
114 | unsigned long flags; | |
115 | int need5V; | |
116 | ||
117 | local_irq_save(flags); | |
118 | ||
119 | need5V = ((state->Vcc == 50) || (state->Vpp == 50)); | |
120 | ||
121 | badge4_set_5V(BADGE4_5V_PCMCIA_SOCK(skt->nr), need5V); | |
122 | ||
123 | local_irq_restore(flags); | |
124 | } | |
125 | ||
126 | return 0; | |
127 | } | |
128 | ||
129 | static struct pcmcia_low_level badge4_pcmcia_ops = { | |
130 | .owner = THIS_MODULE, | |
131 | .init = sa1111_pcmcia_hw_init, | |
132 | .shutdown = sa1111_pcmcia_hw_shutdown, | |
133 | .socket_state = sa1111_pcmcia_socket_state, | |
134 | .configure_socket = badge4_pcmcia_configure_socket, | |
135 | ||
136 | .socket_init = sa1111_pcmcia_socket_init, | |
137 | .socket_suspend = sa1111_pcmcia_socket_suspend, | |
138 | }; | |
139 | ||
140 | int pcmcia_badge4_init(struct device *dev) | |
141 | { | |
142 | int ret = -ENODEV; | |
143 | ||
144 | if (machine_is_badge4()) { | |
145 | printk(KERN_INFO | |
146 | "%s: badge4_pcmvcc=%d, badge4_pcmvpp=%d, badge4_cfvcc=%d\n", | |
147 | __FUNCTION__, | |
148 | badge4_pcmvcc, badge4_pcmvpp, badge4_cfvcc); | |
149 | ||
150 | ret = sa11xx_drv_pcmcia_probe(dev, &badge4_pcmcia_ops, 0, 2); | |
151 | } | |
152 | ||
153 | return ret; | |
154 | } | |
155 | ||
156 | static int __init pcmv_setup(char *s) | |
157 | { | |
158 | int v[4]; | |
159 | ||
160 | s = get_options(s, ARRAY_SIZE(v), v); | |
161 | ||
162 | if (v[0] >= 1) badge4_pcmvcc = v[1]; | |
163 | if (v[0] >= 2) badge4_pcmvpp = v[2]; | |
164 | if (v[0] >= 3) badge4_cfvcc = v[3]; | |
165 | ||
166 | return 1; | |
167 | } | |
168 | ||
169 | __setup("pcmv=", pcmv_setup); |