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1 | /* |
2 | * linux/drivers/pcmcia/pxa2xx_palmld.c |
3 | * |
4 | * Driver for Palm LifeDrive PCMCIA |
5 | * |
6 | * Copyright (C) 2006 Alex Osborne <ato@meshy.org> |
7 | * Copyright (C) 2007-2011 Marek Vasut <marek.vasut@gmail.com> |
8 | * |
9 | * This program is free software; you can redistribute it and/or modify |
10 | * it under the terms of the GNU General Public License version 2 as |
11 | * published by the Free Software Foundation. |
12 | * |
13 | */ |
14 | |
15 | #include <linux/module.h> |
16 | #include <linux/platform_device.h> |
17 | #include <linux/gpio.h> |
18 | |
19 | #include <asm/mach-types.h> |
20 | #include <mach/palmld.h> |
21 | #include "soc_common.h" |
22 | |
23 | static struct gpio palmld_pcmcia_gpios[] = { |
24 | { GPIO_NR_PALMLD_PCMCIA_POWER, GPIOF_INIT_LOW, "PCMCIA Power" }, |
25 | { GPIO_NR_PALMLD_PCMCIA_RESET, GPIOF_INIT_HIGH,"PCMCIA Reset" }, |
26 | }; |
27 | |
28 | static int palmld_pcmcia_hw_init(struct soc_pcmcia_socket *skt) |
29 | { |
30 | int ret; |
31 | |
32 | ret = gpio_request_array(palmld_pcmcia_gpios, |
33 | ARRAY_SIZE(palmld_pcmcia_gpios)); |
34 | |
35 | skt->stat[SOC_STAT_RDY].gpio = GPIO_NR_PALMLD_PCMCIA_READY; |
36 | skt->stat[SOC_STAT_RDY].name = "PCMCIA Ready"; |
37 | |
38 | return ret; |
39 | } |
40 | |
41 | static void palmld_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) |
42 | { |
43 | gpio_free_array(palmld_pcmcia_gpios, ARRAY_SIZE(palmld_pcmcia_gpios)); |
44 | } |
45 | |
46 | static void palmld_pcmcia_socket_state(struct soc_pcmcia_socket *skt, |
47 | struct pcmcia_state *state) |
48 | { |
49 | state->detect = 1; /* always inserted */ |
50 | state->vs_3v = 1; |
51 | state->vs_Xv = 0; |
52 | } |
53 | |
54 | static int palmld_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, |
55 | const socket_state_t *state) |
56 | { |
57 | gpio_set_value(GPIO_NR_PALMLD_PCMCIA_POWER, 1); |
58 | gpio_set_value(GPIO_NR_PALMLD_PCMCIA_RESET, |
59 | !!(state->flags & SS_RESET)); |
60 | |
61 | return 0; |
62 | } |
63 | |
64 | static struct pcmcia_low_level palmld_pcmcia_ops = { |
65 | .owner = THIS_MODULE, |
66 | |
67 | .first = 1, |
68 | .nr = 1, |
69 | |
70 | .hw_init = palmld_pcmcia_hw_init, |
71 | .hw_shutdown = palmld_pcmcia_hw_shutdown, |
72 | |
73 | .socket_state = palmld_pcmcia_socket_state, |
74 | .configure_socket = palmld_pcmcia_configure_socket, |
75 | }; |
76 | |
77 | static struct platform_device *palmld_pcmcia_device; |
78 | |
79 | static int __init palmld_pcmcia_init(void) |
80 | { |
81 | int ret; |
82 | |
83 | if (!machine_is_palmld()) |
84 | return -ENODEV; |
85 | |
86 | palmld_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); |
87 | if (!palmld_pcmcia_device) |
88 | return -ENOMEM; |
89 | |
90 | ret = platform_device_add_data(palmld_pcmcia_device, &palmld_pcmcia_ops, |
91 | sizeof(palmld_pcmcia_ops)); |
92 | |
93 | if (!ret) |
94 | ret = platform_device_add(palmld_pcmcia_device); |
95 | |
96 | if (ret) |
97 | platform_device_put(palmld_pcmcia_device); |
98 | |
99 | return ret; |
100 | } |
101 | |
102 | static void __exit palmld_pcmcia_exit(void) |
103 | { |
104 | platform_device_unregister(palmld_pcmcia_device); |
105 | } |
106 | |
107 | module_init(palmld_pcmcia_init); |
108 | module_exit(palmld_pcmcia_exit); |
109 | |
110 | MODULE_AUTHOR("Alex Osborne <ato@meshy.org>," |
111 | " Marek Vasut <marek.vasut@gmail.com>"); |
112 | MODULE_DESCRIPTION("PCMCIA support for Palm LifeDrive"); |
113 | MODULE_ALIAS("platform:pxa2xx-pcmcia"); |
114 | MODULE_LICENSE("GPL"); |
115 |
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