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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> | |
235a175c | 16 | #include <linux/gpio.h> |
35978408 MV |
17 | |
18 | #include <asm/mach-types.h> | |
a09e64fb | 19 | #include <mach/palmtx.h> |
35978408 MV |
20 | #include "soc_common.h" |
21 | ||
235a175c MV |
22 | static struct gpio palmtx_pcmcia_gpios[] = { |
23 | { GPIO_NR_PALMTX_PCMCIA_POWER1, GPIOF_INIT_LOW, "PCMCIA Power 1" }, | |
24 | { GPIO_NR_PALMTX_PCMCIA_POWER2, GPIOF_INIT_LOW, "PCMCIA Power 2" }, | |
25 | { GPIO_NR_PALMTX_PCMCIA_RESET, GPIOF_INIT_HIGH,"PCMCIA Reset" }, | |
26 | { GPIO_NR_PALMTX_PCMCIA_READY, GPIOF_IN, "PCMCIA Ready" }, | |
27 | }; | |
28 | ||
35978408 MV |
29 | static int palmtx_pcmcia_hw_init(struct soc_pcmcia_socket *skt) |
30 | { | |
574047f9 MV |
31 | int ret; |
32 | ||
235a175c MV |
33 | ret = gpio_request_array(palmtx_pcmcia_gpios, |
34 | ARRAY_SIZE(palmtx_pcmcia_gpios)); | |
574047f9 | 35 | |
66024db5 | 36 | skt->socket.pci_irq = gpio_to_irq(GPIO_NR_PALMTX_PCMCIA_READY); |
574047f9 | 37 | |
574047f9 | 38 | return ret; |
35978408 MV |
39 | } |
40 | ||
41 | static void palmtx_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) | |
42 | { | |
235a175c | 43 | gpio_free_array(palmtx_pcmcia_gpios, ARRAY_SIZE(palmtx_pcmcia_gpios)); |
35978408 MV |
44 | } |
45 | ||
46 | static void palmtx_pcmcia_socket_state(struct soc_pcmcia_socket *skt, | |
47 | struct pcmcia_state *state) | |
48 | { | |
49 | state->detect = 1; /* always inserted */ | |
50 | state->ready = !!gpio_get_value(GPIO_NR_PALMTX_PCMCIA_READY); | |
51 | state->bvd1 = 1; | |
52 | state->bvd2 = 1; | |
53 | state->wrprot = 0; | |
54 | state->vs_3v = 1; | |
55 | state->vs_Xv = 0; | |
56 | } | |
57 | ||
58 | static int | |
59 | palmtx_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, | |
60 | const socket_state_t *state) | |
61 | { | |
62 | gpio_set_value(GPIO_NR_PALMTX_PCMCIA_POWER1, 1); | |
63 | gpio_set_value(GPIO_NR_PALMTX_PCMCIA_POWER2, 1); | |
64 | gpio_set_value(GPIO_NR_PALMTX_PCMCIA_RESET, | |
65 | !!(state->flags & SS_RESET)); | |
66 | ||
67 | return 0; | |
68 | } | |
69 | ||
70 | static void palmtx_pcmcia_socket_init(struct soc_pcmcia_socket *skt) | |
71 | { | |
72 | } | |
73 | ||
74 | static void palmtx_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) | |
75 | { | |
76 | } | |
77 | ||
78 | static struct pcmcia_low_level palmtx_pcmcia_ops = { | |
79 | .owner = THIS_MODULE, | |
80 | ||
81 | .first = 0, | |
82 | .nr = 1, | |
83 | ||
84 | .hw_init = palmtx_pcmcia_hw_init, | |
85 | .hw_shutdown = palmtx_pcmcia_hw_shutdown, | |
86 | ||
87 | .socket_state = palmtx_pcmcia_socket_state, | |
88 | .configure_socket = palmtx_pcmcia_configure_socket, | |
89 | ||
90 | .socket_init = palmtx_pcmcia_socket_init, | |
91 | .socket_suspend = palmtx_pcmcia_socket_suspend, | |
92 | }; | |
93 | ||
94 | static struct platform_device *palmtx_pcmcia_device; | |
95 | ||
96 | static int __init palmtx_pcmcia_init(void) | |
97 | { | |
98 | int ret; | |
99 | ||
100 | if (!machine_is_palmtx()) | |
101 | return -ENODEV; | |
102 | ||
103 | palmtx_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); | |
104 | if (!palmtx_pcmcia_device) | |
105 | return -ENOMEM; | |
106 | ||
107 | ret = platform_device_add_data(palmtx_pcmcia_device, &palmtx_pcmcia_ops, | |
108 | sizeof(palmtx_pcmcia_ops)); | |
109 | ||
110 | if (!ret) | |
111 | ret = platform_device_add(palmtx_pcmcia_device); | |
112 | ||
113 | if (ret) | |
114 | platform_device_put(palmtx_pcmcia_device); | |
115 | ||
116 | return ret; | |
117 | } | |
118 | ||
119 | static void __exit palmtx_pcmcia_exit(void) | |
120 | { | |
121 | platform_device_unregister(palmtx_pcmcia_device); | |
122 | } | |
123 | ||
574047f9 | 124 | module_init(palmtx_pcmcia_init); |
35978408 MV |
125 | module_exit(palmtx_pcmcia_exit); |
126 | ||
127 | MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>"); | |
128 | MODULE_DESCRIPTION("PCMCIA support for Palm T|X"); | |
129 | MODULE_ALIAS("platform:pxa2xx-pcmcia"); | |
130 | MODULE_LICENSE("GPL"); |