Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * linux/drivers/pcmcia/pxa2xx_lubbock.c | |
3 | * | |
4 | * Author: George Davis | |
5 | * Created: Jan 10, 2002 | |
6 | * Copyright: MontaVista Software Inc. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | * | |
12 | * Originally based upon linux/drivers/pcmcia/sa1100_neponset.c | |
13 | * | |
14 | * Lubbock PCMCIA specific routines. | |
15 | * | |
16 | */ | |
17 | #include <linux/module.h> | |
18 | #include <linux/kernel.h> | |
1da177e4 LT |
19 | #include <linux/device.h> |
20 | #include <linux/errno.h> | |
21 | #include <linux/init.h> | |
22 | #include <linux/delay.h> | |
23 | ||
a09e64fb | 24 | #include <mach/hardware.h> |
1da177e4 LT |
25 | #include <asm/hardware/sa1111.h> |
26 | #include <asm/mach-types.h> | |
1da177e4 LT |
27 | |
28 | #include "sa1111_generic.h" | |
f1f05ee1 RK |
29 | #include "max1600.h" |
30 | ||
31 | static int lubbock_pcmcia_hw_init(struct soc_pcmcia_socket *skt) | |
32 | { | |
33 | struct max1600 *m; | |
34 | int ret; | |
35 | ||
36 | ret = max1600_init(skt->socket.dev.parent, &m, | |
37 | skt->nr ? MAX1600_CHAN_B : MAX1600_CHAN_A, | |
38 | MAX1600_CODE_HIGH); | |
39 | if (ret == 0) | |
40 | skt->driver_data = m; | |
41 | ||
42 | return ret; | |
43 | } | |
1da177e4 | 44 | |
1da177e4 LT |
45 | static int |
46 | lubbock_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, | |
47 | const socket_state_t *state) | |
48 | { | |
f1f05ee1 | 49 | struct max1600 *m = skt->driver_data; |
1da177e4 LT |
50 | int ret = 0; |
51 | ||
1da177e4 LT |
52 | /* Lubbock uses the Maxim MAX1602, with the following connections: |
53 | * | |
54 | * Socket 0 (PCMCIA): | |
55 | * MAX1602 Lubbock Register | |
56 | * Pin Signal | |
57 | * ----- ------- ---------------------- | |
58 | * A0VPP S0_PWR0 SA-1111 GPIO A<0> | |
59 | * A1VPP S0_PWR1 SA-1111 GPIO A<1> | |
60 | * A0VCC S0_PWR2 SA-1111 GPIO A<2> | |
61 | * A1VCC S0_PWR3 SA-1111 GPIO A<3> | |
62 | * VX VCC | |
63 | * VY +3.3V | |
64 | * 12IN +12V | |
65 | * CODE +3.3V Cirrus Code, CODE = High (VY) | |
66 | * | |
67 | * Socket 1 (CF): | |
68 | * MAX1602 Lubbock Register | |
69 | * Pin Signal | |
70 | * ----- ------- ---------------------- | |
71 | * A0VPP GND VPP is not connected | |
72 | * A1VPP GND VPP is not connected | |
73 | * A0VCC S1_PWR0 MISC_WR<14> | |
74 | * A1VCC S1_PWR1 MISC_WR<15> | |
75 | * VX VCC | |
76 | * VY +3.3V | |
77 | * 12IN GND VPP is not connected | |
78 | * CODE +3.3V Cirrus Code, CODE = High (VY) | |
79 | * | |
80 | */ | |
81 | ||
82 | again: | |
83 | switch (skt->nr) { | |
84 | case 0: | |
1da177e4 | 85 | case 1: |
1da177e4 LT |
86 | break; |
87 | ||
88 | default: | |
89 | ret = -1; | |
90 | } | |
91 | ||
92 | if (ret == 0) | |
93 | ret = sa1111_pcmcia_configure_socket(skt, state); | |
f1f05ee1 RK |
94 | if (ret == 0) |
95 | ret = max1600_configure(m, state->Vcc, state->Vpp); | |
1da177e4 LT |
96 | |
97 | #if 1 | |
98 | if (ret == 0 && state->Vcc == 33) { | |
99 | struct pcmcia_state new_state; | |
100 | ||
101 | /* | |
102 | * HACK ALERT: | |
103 | * We can't sense the voltage properly on Lubbock before | |
104 | * actually applying some power to the socket (catch 22). | |
105 | * Resense the socket Voltage Sense pins after applying | |
106 | * socket power. | |
107 | * | |
108 | * Note: It takes about 2.5ms for the MAX1602 VCC output | |
109 | * to rise. | |
110 | */ | |
111 | mdelay(3); | |
112 | ||
113 | sa1111_pcmcia_socket_state(skt, &new_state); | |
114 | ||
115 | if (!new_state.vs_3v && !new_state.vs_Xv) { | |
116 | /* | |
117 | * Switch to 5V, Configure socket with 5V voltage | |
118 | */ | |
f1f05ee1 | 119 | max1600_configure(m, 0, 0); |
1da177e4 LT |
120 | |
121 | /* | |
122 | * It takes about 100ms to turn off Vcc. | |
123 | */ | |
124 | mdelay(100); | |
125 | ||
126 | /* | |
127 | * We need to hack around the const qualifier as | |
128 | * well to keep this ugly workaround localized and | |
129 | * not force it to the rest of the code. Barf bags | |
25985edc | 130 | * available in the seat pocket in front of you! |
1da177e4 LT |
131 | */ |
132 | ((socket_state_t *)state)->Vcc = 50; | |
133 | ((socket_state_t *)state)->Vpp = 50; | |
134 | goto again; | |
135 | } | |
136 | } | |
137 | #endif | |
138 | ||
139 | return ret; | |
140 | } | |
141 | ||
142 | static struct pcmcia_low_level lubbock_pcmcia_ops = { | |
143 | .owner = THIS_MODULE, | |
f1f05ee1 | 144 | .hw_init = lubbock_pcmcia_hw_init, |
1da177e4 | 145 | .configure_socket = lubbock_pcmcia_configure_socket, |
1da177e4 LT |
146 | .first = 0, |
147 | .nr = 2, | |
148 | }; | |
149 | ||
150 | #include "pxa2xx_base.h" | |
151 | ||
7bbaac12 | 152 | int pcmcia_lubbock_init(struct sa1111_dev *sadev) |
1da177e4 | 153 | { |
3f8df892 | 154 | pxa2xx_drv_pcmcia_ops(&lubbock_pcmcia_ops); |
817ed574 | 155 | pxa2xx_configure_sockets(&sadev->dev, &lubbock_pcmcia_ops); |
3f8df892 RK |
156 | return sa1111_pcmcia_add(sadev, &lubbock_pcmcia_ops, |
157 | pxa2xx_drv_pcmcia_add_one); | |
1da177e4 LT |
158 | } |
159 | ||
160 | MODULE_LICENSE("GPL"); |