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35978408 MV |
1 | /* |
2 | * linux/drivers/pcmcia/pxa2xx_palmtx.c | |
3 | * | |
4 | * Driver for Palm T|X PCMCIA | |
5 | * | |
6 | * Copyright (C) 2007-2008 Marek Vasut <marek.vasut@gmail.com> | |
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 | */ | |
13 | ||
14 | #include <linux/module.h> | |
15 | #include <linux/platform_device.h> | |
16 | ||
17 | #include <asm/mach-types.h> | |
18 | ||
19 | #include <asm/arch/gpio.h> | |
20 | #include <asm/arch/palmtx.h> | |
21 | ||
22 | #include "soc_common.h" | |
23 | ||
24 | static int palmtx_pcmcia_hw_init(struct soc_pcmcia_socket *skt) | |
25 | { | |
26 | skt->irq = IRQ_GPIO(GPIO_NR_PALMTX_PCMCIA_READY); | |
27 | return 0; | |
28 | } | |
29 | ||
30 | static void palmtx_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) | |
31 | { | |
32 | } | |
33 | ||
34 | static void palmtx_pcmcia_socket_state(struct soc_pcmcia_socket *skt, | |
35 | struct pcmcia_state *state) | |
36 | { | |
37 | state->detect = 1; /* always inserted */ | |
38 | state->ready = !!gpio_get_value(GPIO_NR_PALMTX_PCMCIA_READY); | |
39 | state->bvd1 = 1; | |
40 | state->bvd2 = 1; | |
41 | state->wrprot = 0; | |
42 | state->vs_3v = 1; | |
43 | state->vs_Xv = 0; | |
44 | } | |
45 | ||
46 | static int | |
47 | palmtx_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, | |
48 | const socket_state_t *state) | |
49 | { | |
50 | gpio_set_value(GPIO_NR_PALMTX_PCMCIA_POWER1, 1); | |
51 | gpio_set_value(GPIO_NR_PALMTX_PCMCIA_POWER2, 1); | |
52 | gpio_set_value(GPIO_NR_PALMTX_PCMCIA_RESET, | |
53 | !!(state->flags & SS_RESET)); | |
54 | ||
55 | return 0; | |
56 | } | |
57 | ||
58 | static void palmtx_pcmcia_socket_init(struct soc_pcmcia_socket *skt) | |
59 | { | |
60 | } | |
61 | ||
62 | static void palmtx_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) | |
63 | { | |
64 | } | |
65 | ||
66 | static struct pcmcia_low_level palmtx_pcmcia_ops = { | |
67 | .owner = THIS_MODULE, | |
68 | ||
69 | .first = 0, | |
70 | .nr = 1, | |
71 | ||
72 | .hw_init = palmtx_pcmcia_hw_init, | |
73 | .hw_shutdown = palmtx_pcmcia_hw_shutdown, | |
74 | ||
75 | .socket_state = palmtx_pcmcia_socket_state, | |
76 | .configure_socket = palmtx_pcmcia_configure_socket, | |
77 | ||
78 | .socket_init = palmtx_pcmcia_socket_init, | |
79 | .socket_suspend = palmtx_pcmcia_socket_suspend, | |
80 | }; | |
81 | ||
82 | static struct platform_device *palmtx_pcmcia_device; | |
83 | ||
84 | static int __init palmtx_pcmcia_init(void) | |
85 | { | |
86 | int ret; | |
87 | ||
88 | if (!machine_is_palmtx()) | |
89 | return -ENODEV; | |
90 | ||
91 | palmtx_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); | |
92 | if (!palmtx_pcmcia_device) | |
93 | return -ENOMEM; | |
94 | ||
95 | ret = platform_device_add_data(palmtx_pcmcia_device, &palmtx_pcmcia_ops, | |
96 | sizeof(palmtx_pcmcia_ops)); | |
97 | ||
98 | if (!ret) | |
99 | ret = platform_device_add(palmtx_pcmcia_device); | |
100 | ||
101 | if (ret) | |
102 | platform_device_put(palmtx_pcmcia_device); | |
103 | ||
104 | return ret; | |
105 | } | |
106 | ||
107 | static void __exit palmtx_pcmcia_exit(void) | |
108 | { | |
109 | platform_device_unregister(palmtx_pcmcia_device); | |
110 | } | |
111 | ||
112 | fs_initcall(palmtx_pcmcia_init); | |
113 | module_exit(palmtx_pcmcia_exit); | |
114 | ||
115 | MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>"); | |
116 | MODULE_DESCRIPTION("PCMCIA support for Palm T|X"); | |
117 | MODULE_ALIAS("platform:pxa2xx-pcmcia"); | |
118 | MODULE_LICENSE("GPL"); |