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1 | /* |
2 | * linux/drivers/pcmcia/pxa2xx_vpac270.c |
3 | * |
4 | * Driver for Voipac PXA270 PCMCIA and CF sockets |
5 | * |
6 | * Copyright (C) 2010-2011 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/gpio.h> |
15 | #include <linux/module.h> |
16 | #include <linux/platform_device.h> |
17 | |
18 | #include <asm/mach-types.h> |
19 | |
20 | #include <asm/gpio.h> |
21 | #include <mach/vpac270.h> |
22 | |
23 | #include "soc_common.h" |
24 | |
25 | static struct gpio vpac270_pcmcia_gpios[] = { |
26 | { GPIO107_VPAC270_PCMCIA_PPEN, GPIOF_INIT_LOW, "PCMCIA PPEN" }, |
27 | { GPIO11_VPAC270_PCMCIA_RESET, GPIOF_INIT_LOW, "PCMCIA Reset" }, |
28 | }; |
29 | |
30 | static struct gpio vpac270_cf_gpios[] = { |
31 | { GPIO16_VPAC270_CF_RESET, GPIOF_INIT_LOW, "CF Reset" }, |
32 | }; |
33 | |
34 | static int vpac270_pcmcia_hw_init(struct soc_pcmcia_socket *skt) |
35 | { |
36 | int ret; |
37 | |
38 | if (skt->nr == 0) { |
39 | ret = gpio_request_array(vpac270_pcmcia_gpios, |
40 | ARRAY_SIZE(vpac270_pcmcia_gpios)); |
41 | |
42 | skt->stat[SOC_STAT_CD].gpio = GPIO84_VPAC270_PCMCIA_CD; |
43 | skt->stat[SOC_STAT_CD].name = "PCMCIA CD"; |
44 | skt->stat[SOC_STAT_RDY].gpio = GPIO35_VPAC270_PCMCIA_RDY; |
45 | skt->stat[SOC_STAT_RDY].name = "PCMCIA Ready"; |
46 | } else { |
47 | ret = gpio_request_array(vpac270_cf_gpios, |
48 | ARRAY_SIZE(vpac270_cf_gpios)); |
49 | |
50 | skt->stat[SOC_STAT_CD].gpio = GPIO17_VPAC270_CF_CD; |
51 | skt->stat[SOC_STAT_CD].name = "CF CD"; |
52 | skt->stat[SOC_STAT_RDY].gpio = GPIO12_VPAC270_CF_RDY; |
53 | skt->stat[SOC_STAT_RDY].name = "CF Ready"; |
54 | } |
55 | |
56 | return ret; |
57 | } |
58 | |
59 | static void vpac270_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) |
60 | { |
61 | if (skt->nr == 0) |
62 | gpio_free_array(vpac270_pcmcia_gpios, |
63 | ARRAY_SIZE(vpac270_pcmcia_gpios)); |
64 | else |
65 | gpio_free_array(vpac270_cf_gpios, |
66 | ARRAY_SIZE(vpac270_cf_gpios)); |
67 | } |
68 | |
69 | static void vpac270_pcmcia_socket_state(struct soc_pcmcia_socket *skt, |
70 | struct pcmcia_state *state) |
71 | { |
72 | state->vs_3v = 1; |
73 | state->vs_Xv = 0; |
74 | } |
75 | |
76 | static int |
77 | vpac270_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, |
78 | const socket_state_t *state) |
79 | { |
80 | if (skt->nr == 0) { |
81 | gpio_set_value(GPIO11_VPAC270_PCMCIA_RESET, |
82 | (state->flags & SS_RESET)); |
83 | gpio_set_value(GPIO107_VPAC270_PCMCIA_PPEN, |
84 | !(state->Vcc == 33 || state->Vcc == 50)); |
85 | } else { |
86 | gpio_set_value(GPIO16_VPAC270_CF_RESET, |
87 | (state->flags & SS_RESET)); |
88 | } |
89 | |
90 | return 0; |
91 | } |
92 | |
93 | static struct pcmcia_low_level vpac270_pcmcia_ops = { |
94 | .owner = THIS_MODULE, |
95 | |
96 | .first = 0, |
97 | .nr = 2, |
98 | |
99 | .hw_init = vpac270_pcmcia_hw_init, |
100 | .hw_shutdown = vpac270_pcmcia_hw_shutdown, |
101 | |
102 | .socket_state = vpac270_pcmcia_socket_state, |
103 | .configure_socket = vpac270_pcmcia_configure_socket, |
104 | }; |
105 | |
106 | static struct platform_device *vpac270_pcmcia_device; |
107 | |
108 | static int __init vpac270_pcmcia_init(void) |
109 | { |
110 | int ret; |
111 | |
112 | if (!machine_is_vpac270()) |
113 | return -ENODEV; |
114 | |
115 | vpac270_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); |
116 | if (!vpac270_pcmcia_device) |
117 | return -ENOMEM; |
118 | |
119 | ret = platform_device_add_data(vpac270_pcmcia_device, |
120 | &vpac270_pcmcia_ops, sizeof(vpac270_pcmcia_ops)); |
121 | |
122 | if (!ret) |
123 | ret = platform_device_add(vpac270_pcmcia_device); |
124 | |
125 | if (ret) |
126 | platform_device_put(vpac270_pcmcia_device); |
127 | |
128 | return ret; |
129 | } |
130 | |
131 | static void __exit vpac270_pcmcia_exit(void) |
132 | { |
133 | platform_device_unregister(vpac270_pcmcia_device); |
134 | } |
135 | |
136 | module_init(vpac270_pcmcia_init); |
137 | module_exit(vpac270_pcmcia_exit); |
138 | |
139 | MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>"); |
140 | MODULE_DESCRIPTION("PCMCIA support for Voipac PXA270"); |
141 | MODULE_ALIAS("platform:pxa2xx-pcmcia"); |
142 | MODULE_LICENSE("GPL"); |
143 |
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