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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
1da177e4 LT |
2 | /* |
3 | * linux/drivers/pcmcia/sa1100_badge4.c | |
4 | * | |
5 | * BadgePAD 4 PCMCIA specific routines | |
6 | * | |
7 | * Christopher Hoover <ch@hpl.hp.com> | |
8 | * | |
9 | * Copyright (C) 2002 Hewlett-Packard Company | |
1da177e4 LT |
10 | */ |
11 | #include <linux/module.h> | |
12 | #include <linux/kernel.h> | |
1da177e4 LT |
13 | #include <linux/device.h> |
14 | #include <linux/errno.h> | |
15 | #include <linux/init.h> | |
16 | ||
a09e64fb | 17 | #include <mach/hardware.h> |
1da177e4 | 18 | #include <asm/mach-types.h> |
a09e64fb | 19 | #include <mach/badge4.h> |
1da177e4 LT |
20 | #include <asm/hardware/sa1111.h> |
21 | ||
22 | #include "sa1111_generic.h" | |
23 | ||
24 | /* | |
25 | * BadgePAD 4 Details | |
26 | * | |
27 | * PCM Vcc: | |
28 | * | |
29 | * PCM Vcc on BadgePAD 4 can be jumpered for 3v3 (short pins 1 and 3 | |
30 | * on JP6) or 5v0 (short pins 3 and 5 on JP6). | |
31 | * | |
32 | * PCM Vpp: | |
33 | * | |
34 | * PCM Vpp on BadgePAD 4 can be jumpered for 12v0 (short pins 4 and 6 | |
35 | * on JP6) or tied to PCM Vcc (short pins 2 and 4 on JP6). N.B., | |
36 | * 12v0 operation requires that the power supply actually supply 12v0 | |
37 | * via pin 7 of JP7. | |
38 | * | |
39 | * CF Vcc: | |
40 | * | |
41 | * CF Vcc on BadgePAD 4 can be jumpered either for 3v3 (short pins 1 | |
42 | * and 2 on JP10) or 5v0 (short pins 2 and 3 on JP10). | |
43 | * | |
44 | * Unfortunately there's no way programmatically to determine how a | |
45 | * given board is jumpered. This code assumes a default jumpering | |
46 | * as described below. | |
47 | * | |
48 | * If the defaults aren't correct, you may override them with a pcmv | |
49 | * setup argument: pcmv=<pcm vcc>,<pcm vpp>,<cf vcc>. The units are | |
50 | * tenths of volts; e.g. pcmv=33,120,50 indicates 3v3 PCM Vcc, 12v0 | |
51 | * PCM Vpp, and 5v0 CF Vcc. | |
52 | * | |
53 | */ | |
54 | ||
55 | static int badge4_pcmvcc = 50; /* pins 3 and 5 jumpered on JP6 */ | |
56 | static int badge4_pcmvpp = 50; /* pins 2 and 4 jumpered on JP6 */ | |
57 | static int badge4_cfvcc = 33; /* pins 1 and 2 jumpered on JP10 */ | |
58 | ||
59 | static void complain_about_jumpering(const char *whom, | |
60 | const char *supply, | |
61 | int given, int wanted) | |
62 | { | |
63 | printk(KERN_ERR | |
64 | "%s: %s %d.%dV wanted but board is jumpered for %s %d.%dV operation" | |
65 | "; re-jumper the board and/or use pcmv=xx,xx,xx\n", | |
66 | whom, supply, | |
67 | wanted / 10, wanted % 10, | |
68 | supply, | |
69 | given / 10, given % 10); | |
70 | } | |
71 | ||
72 | static int | |
73 | badge4_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state) | |
74 | { | |
75 | int ret; | |
76 | ||
77 | switch (skt->nr) { | |
78 | case 0: | |
79 | if ((state->Vcc != 0) && | |
80 | (state->Vcc != badge4_pcmvcc)) { | |
2e11cb4c | 81 | complain_about_jumpering(__func__, "pcmvcc", |
1da177e4 LT |
82 | badge4_pcmvcc, state->Vcc); |
83 | // Apply power regardless of the jumpering. | |
84 | // return -1; | |
85 | } | |
86 | if ((state->Vpp != 0) && | |
87 | (state->Vpp != badge4_pcmvpp)) { | |
2e11cb4c | 88 | complain_about_jumpering(__func__, "pcmvpp", |
1da177e4 LT |
89 | badge4_pcmvpp, state->Vpp); |
90 | return -1; | |
91 | } | |
92 | break; | |
93 | ||
94 | case 1: | |
95 | if ((state->Vcc != 0) && | |
96 | (state->Vcc != badge4_cfvcc)) { | |
2e11cb4c | 97 | complain_about_jumpering(__func__, "cfvcc", |
1da177e4 LT |
98 | badge4_cfvcc, state->Vcc); |
99 | return -1; | |
100 | } | |
101 | break; | |
102 | ||
103 | default: | |
104 | return -1; | |
105 | } | |
106 | ||
107 | ret = sa1111_pcmcia_configure_socket(skt, state); | |
108 | if (ret == 0) { | |
109 | unsigned long flags; | |
110 | int need5V; | |
111 | ||
112 | local_irq_save(flags); | |
113 | ||
114 | need5V = ((state->Vcc == 50) || (state->Vpp == 50)); | |
115 | ||
116 | badge4_set_5V(BADGE4_5V_PCMCIA_SOCK(skt->nr), need5V); | |
117 | ||
118 | local_irq_restore(flags); | |
119 | } | |
120 | ||
65c77dca | 121 | return ret; |
1da177e4 LT |
122 | } |
123 | ||
124 | static struct pcmcia_low_level badge4_pcmcia_ops = { | |
125 | .owner = THIS_MODULE, | |
1da177e4 | 126 | .configure_socket = badge4_pcmcia_configure_socket, |
701a5dc0 RKAL |
127 | .first = 0, |
128 | .nr = 2, | |
1da177e4 LT |
129 | }; |
130 | ||
cfd1f008 | 131 | int pcmcia_badge4_init(struct sa1111_dev *dev) |
1da177e4 | 132 | { |
3f8df892 RK |
133 | printk(KERN_INFO |
134 | "%s: badge4_pcmvcc=%d, badge4_pcmvpp=%d, badge4_cfvcc=%d\n", | |
135 | __func__, | |
136 | badge4_pcmvcc, badge4_pcmvpp, badge4_cfvcc); | |
137 | ||
138 | sa11xx_drv_pcmcia_ops(&badge4_pcmcia_ops); | |
139 | return sa1111_pcmcia_add(dev, &badge4_pcmcia_ops, | |
140 | sa11xx_drv_pcmcia_add_one); | |
1da177e4 LT |
141 | } |
142 | ||
d4258247 | 143 | #ifndef MODULE |
1da177e4 LT |
144 | static int __init pcmv_setup(char *s) |
145 | { | |
146 | int v[4]; | |
147 | ||
148 | s = get_options(s, ARRAY_SIZE(v), v); | |
149 | ||
150 | if (v[0] >= 1) badge4_pcmvcc = v[1]; | |
151 | if (v[0] >= 2) badge4_pcmvpp = v[2]; | |
152 | if (v[0] >= 3) badge4_cfvcc = v[3]; | |
153 | ||
154 | return 1; | |
155 | } | |
156 | ||
157 | __setup("pcmv=", pcmv_setup); | |
d4258247 | 158 | #endif |