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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) 2007-2008 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 int palmld_pcmcia_hw_init(struct soc_pcmcia_socket *skt) |
24 | { |
25 | int ret; |
26 | |
27 | ret = gpio_request(GPIO_NR_PALMLD_PCMCIA_POWER, "PCMCIA PWR"); |
28 | if (ret) |
29 | goto err1; |
30 | ret = gpio_direction_output(GPIO_NR_PALMLD_PCMCIA_POWER, 0); |
31 | if (ret) |
32 | goto err2; |
33 | |
34 | ret = gpio_request(GPIO_NR_PALMLD_PCMCIA_RESET, "PCMCIA RST"); |
35 | if (ret) |
36 | goto err2; |
37 | ret = gpio_direction_output(GPIO_NR_PALMLD_PCMCIA_RESET, 1); |
38 | if (ret) |
39 | goto err3; |
40 | |
41 | ret = gpio_request(GPIO_NR_PALMLD_PCMCIA_READY, "PCMCIA RDY"); |
42 | if (ret) |
43 | goto err3; |
44 | ret = gpio_direction_input(GPIO_NR_PALMLD_PCMCIA_READY); |
45 | if (ret) |
46 | goto err4; |
47 | |
48 | skt->socket.pci_irq = IRQ_GPIO(GPIO_NR_PALMLD_PCMCIA_READY); |
49 | return 0; |
50 | |
51 | err4: |
52 | gpio_free(GPIO_NR_PALMLD_PCMCIA_READY); |
53 | err3: |
54 | gpio_free(GPIO_NR_PALMLD_PCMCIA_RESET); |
55 | err2: |
56 | gpio_free(GPIO_NR_PALMLD_PCMCIA_POWER); |
57 | err1: |
58 | return ret; |
59 | } |
60 | |
61 | static void palmld_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) |
62 | { |
63 | gpio_free(GPIO_NR_PALMLD_PCMCIA_READY); |
64 | gpio_free(GPIO_NR_PALMLD_PCMCIA_RESET); |
65 | gpio_free(GPIO_NR_PALMLD_PCMCIA_POWER); |
66 | } |
67 | |
68 | static void palmld_pcmcia_socket_state(struct soc_pcmcia_socket *skt, |
69 | struct pcmcia_state *state) |
70 | { |
71 | state->detect = 1; /* always inserted */ |
72 | state->ready = !!gpio_get_value(GPIO_NR_PALMLD_PCMCIA_READY); |
73 | state->bvd1 = 1; |
74 | state->bvd2 = 1; |
75 | state->wrprot = 0; |
76 | state->vs_3v = 1; |
77 | state->vs_Xv = 0; |
78 | } |
79 | |
80 | static int palmld_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, |
81 | const socket_state_t *state) |
82 | { |
83 | gpio_set_value(GPIO_NR_PALMLD_PCMCIA_POWER, 1); |
84 | gpio_set_value(GPIO_NR_PALMLD_PCMCIA_RESET, |
85 | !!(state->flags & SS_RESET)); |
86 | |
87 | return 0; |
88 | } |
89 | |
90 | static void palmld_pcmcia_socket_init(struct soc_pcmcia_socket *skt) |
91 | { |
92 | } |
93 | |
94 | static void palmld_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) |
95 | { |
96 | } |
97 | |
98 | static struct pcmcia_low_level palmld_pcmcia_ops = { |
99 | .owner = THIS_MODULE, |
100 | |
101 | .first = 1, |
102 | .nr = 1, |
103 | |
104 | .hw_init = palmld_pcmcia_hw_init, |
105 | .hw_shutdown = palmld_pcmcia_hw_shutdown, |
106 | |
107 | .socket_state = palmld_pcmcia_socket_state, |
108 | .configure_socket = palmld_pcmcia_configure_socket, |
109 | |
110 | .socket_init = palmld_pcmcia_socket_init, |
111 | .socket_suspend = palmld_pcmcia_socket_suspend, |
112 | }; |
113 | |
114 | static struct platform_device *palmld_pcmcia_device; |
115 | |
116 | static int __init palmld_pcmcia_init(void) |
117 | { |
118 | int ret; |
119 | |
120 | if (!machine_is_palmld()) |
121 | return -ENODEV; |
122 | |
123 | palmld_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); |
124 | if (!palmld_pcmcia_device) |
125 | return -ENOMEM; |
126 | |
127 | ret = platform_device_add_data(palmld_pcmcia_device, &palmld_pcmcia_ops, |
128 | sizeof(palmld_pcmcia_ops)); |
129 | |
130 | if (!ret) |
131 | ret = platform_device_add(palmld_pcmcia_device); |
132 | |
133 | if (ret) |
134 | platform_device_put(palmld_pcmcia_device); |
135 | |
136 | return ret; |
137 | } |
138 | |
139 | static void __exit palmld_pcmcia_exit(void) |
140 | { |
141 | platform_device_unregister(palmld_pcmcia_device); |
142 | } |
143 | |
144 | module_init(palmld_pcmcia_init); |
145 | module_exit(palmld_pcmcia_exit); |
146 | |
147 | MODULE_AUTHOR("Alex Osborne <ato@meshy.org>," |
148 | " Marek Vasut <marek.vasut@gmail.com>"); |
149 | MODULE_DESCRIPTION("PCMCIA support for Palm LifeDrive"); |
150 | MODULE_ALIAS("platform:pxa2xx-pcmcia"); |
151 | MODULE_LICENSE("GPL"); |
152 |
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