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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
1da177e4 LT |
2 | /* |
3 | * linux/drivers/pcmcia/pxa2xx_lubbock.c | |
4 | * | |
5 | * Author: George Davis | |
6 | * Created: Jan 10, 2002 | |
7 | * Copyright: MontaVista Software Inc. | |
8 | * | |
1da177e4 LT |
9 | * Originally based upon linux/drivers/pcmcia/sa1100_neponset.c |
10 | * | |
11 | * Lubbock PCMCIA specific routines. | |
1da177e4 LT |
12 | */ |
13 | #include <linux/module.h> | |
14 | #include <linux/kernel.h> | |
1da177e4 LT |
15 | #include <linux/device.h> |
16 | #include <linux/errno.h> | |
17 | #include <linux/init.h> | |
18 | #include <linux/delay.h> | |
19 | ||
a09e64fb | 20 | #include <mach/hardware.h> |
1da177e4 LT |
21 | #include <asm/hardware/sa1111.h> |
22 | #include <asm/mach-types.h> | |
1da177e4 LT |
23 | |
24 | #include "sa1111_generic.h" | |
f1f05ee1 RK |
25 | #include "max1600.h" |
26 | ||
27 | static int lubbock_pcmcia_hw_init(struct soc_pcmcia_socket *skt) | |
28 | { | |
29 | struct max1600 *m; | |
30 | int ret; | |
31 | ||
32 | ret = max1600_init(skt->socket.dev.parent, &m, | |
33 | skt->nr ? MAX1600_CHAN_B : MAX1600_CHAN_A, | |
34 | MAX1600_CODE_HIGH); | |
35 | if (ret == 0) | |
36 | skt->driver_data = m; | |
37 | ||
38 | return ret; | |
39 | } | |
1da177e4 | 40 | |
1da177e4 LT |
41 | static int |
42 | lubbock_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, | |
43 | const socket_state_t *state) | |
44 | { | |
f1f05ee1 | 45 | struct max1600 *m = skt->driver_data; |
1da177e4 LT |
46 | int ret = 0; |
47 | ||
1da177e4 LT |
48 | /* Lubbock uses the Maxim MAX1602, with the following connections: |
49 | * | |
50 | * Socket 0 (PCMCIA): | |
51 | * MAX1602 Lubbock Register | |
52 | * Pin Signal | |
53 | * ----- ------- ---------------------- | |
54 | * A0VPP S0_PWR0 SA-1111 GPIO A<0> | |
55 | * A1VPP S0_PWR1 SA-1111 GPIO A<1> | |
56 | * A0VCC S0_PWR2 SA-1111 GPIO A<2> | |
57 | * A1VCC S0_PWR3 SA-1111 GPIO A<3> | |
58 | * VX VCC | |
59 | * VY +3.3V | |
60 | * 12IN +12V | |
61 | * CODE +3.3V Cirrus Code, CODE = High (VY) | |
62 | * | |
63 | * Socket 1 (CF): | |
64 | * MAX1602 Lubbock Register | |
65 | * Pin Signal | |
66 | * ----- ------- ---------------------- | |
67 | * A0VPP GND VPP is not connected | |
68 | * A1VPP GND VPP is not connected | |
69 | * A0VCC S1_PWR0 MISC_WR<14> | |
70 | * A1VCC S1_PWR1 MISC_WR<15> | |
71 | * VX VCC | |
72 | * VY +3.3V | |
73 | * 12IN GND VPP is not connected | |
74 | * CODE +3.3V Cirrus Code, CODE = High (VY) | |
75 | * | |
76 | */ | |
77 | ||
78 | again: | |
79 | switch (skt->nr) { | |
80 | case 0: | |
1da177e4 | 81 | case 1: |
1da177e4 LT |
82 | break; |
83 | ||
84 | default: | |
85 | ret = -1; | |
86 | } | |
87 | ||
88 | if (ret == 0) | |
89 | ret = sa1111_pcmcia_configure_socket(skt, state); | |
f1f05ee1 RK |
90 | if (ret == 0) |
91 | ret = max1600_configure(m, state->Vcc, state->Vpp); | |
1da177e4 LT |
92 | |
93 | #if 1 | |
94 | if (ret == 0 && state->Vcc == 33) { | |
95 | struct pcmcia_state new_state; | |
96 | ||
97 | /* | |
98 | * HACK ALERT: | |
99 | * We can't sense the voltage properly on Lubbock before | |
100 | * actually applying some power to the socket (catch 22). | |
101 | * Resense the socket Voltage Sense pins after applying | |
102 | * socket power. | |
103 | * | |
104 | * Note: It takes about 2.5ms for the MAX1602 VCC output | |
105 | * to rise. | |
106 | */ | |
107 | mdelay(3); | |
108 | ||
109 | sa1111_pcmcia_socket_state(skt, &new_state); | |
110 | ||
111 | if (!new_state.vs_3v && !new_state.vs_Xv) { | |
112 | /* | |
113 | * Switch to 5V, Configure socket with 5V voltage | |
114 | */ | |
f1f05ee1 | 115 | max1600_configure(m, 0, 0); |
1da177e4 LT |
116 | |
117 | /* | |
118 | * It takes about 100ms to turn off Vcc. | |
119 | */ | |
120 | mdelay(100); | |
121 | ||
122 | /* | |
123 | * We need to hack around the const qualifier as | |
124 | * well to keep this ugly workaround localized and | |
125 | * not force it to the rest of the code. Barf bags | |
25985edc | 126 | * available in the seat pocket in front of you! |
1da177e4 LT |
127 | */ |
128 | ((socket_state_t *)state)->Vcc = 50; | |
129 | ((socket_state_t *)state)->Vpp = 50; | |
130 | goto again; | |
131 | } | |
132 | } | |
133 | #endif | |
134 | ||
135 | return ret; | |
136 | } | |
137 | ||
138 | static struct pcmcia_low_level lubbock_pcmcia_ops = { | |
139 | .owner = THIS_MODULE, | |
f1f05ee1 | 140 | .hw_init = lubbock_pcmcia_hw_init, |
1da177e4 | 141 | .configure_socket = lubbock_pcmcia_configure_socket, |
1da177e4 LT |
142 | .first = 0, |
143 | .nr = 2, | |
144 | }; | |
145 | ||
146 | #include "pxa2xx_base.h" | |
147 | ||
7bbaac12 | 148 | int pcmcia_lubbock_init(struct sa1111_dev *sadev) |
1da177e4 | 149 | { |
3f8df892 | 150 | pxa2xx_drv_pcmcia_ops(&lubbock_pcmcia_ops); |
817ed574 | 151 | pxa2xx_configure_sockets(&sadev->dev, &lubbock_pcmcia_ops); |
3f8df892 RK |
152 | return sa1111_pcmcia_add(sadev, &lubbock_pcmcia_ops, |
153 | pxa2xx_drv_pcmcia_add_one); | |
1da177e4 LT |
154 | } |
155 | ||
156 | MODULE_LICENSE("GPL"); |