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addff0fa MV |
1 | /* |
2 | * linux/drivers/pcmcia/pxa2xx_vpac270.c | |
3 | * | |
4 | * Driver for Voipac PXA270 PCMCIA and CF sockets | |
5 | * | |
9ed3fbf1 | 6 | * Copyright (C) 2010-2011 Marek Vasut <marek.vasut@gmail.com> |
addff0fa MV |
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 <mach/gpio.h> | |
20 | #include <mach/vpac270.h> | |
21 | ||
22 | #include "soc_common.h" | |
23 | ||
e27af7ed MV |
24 | static struct gpio vpac270_pcmcia_gpios[] = { |
25 | { GPIO84_VPAC270_PCMCIA_CD, GPIOF_IN, "PCMCIA Card Detect" }, | |
26 | { GPIO35_VPAC270_PCMCIA_RDY, GPIOF_IN, "PCMCIA Ready" }, | |
27 | { GPIO107_VPAC270_PCMCIA_PPEN, GPIOF_INIT_LOW, "PCMCIA PPEN" }, | |
28 | { GPIO11_VPAC270_PCMCIA_RESET, GPIOF_INIT_LOW, "PCMCIA Reset" }, | |
29 | }; | |
30 | ||
31 | static struct gpio vpac270_cf_gpios[] = { | |
32 | { GPIO17_VPAC270_CF_CD, GPIOF_IN, "CF Card Detect" }, | |
33 | { GPIO12_VPAC270_CF_RDY, GPIOF_IN, "CF Ready" }, | |
34 | { GPIO16_VPAC270_CF_RESET, GPIOF_INIT_LOW, "CF Reset" }, | |
35 | }; | |
36 | ||
addff0fa MV |
37 | static struct pcmcia_irqs cd_irqs[] = { |
38 | { | |
39 | .sock = 0, | |
40 | .irq = IRQ_GPIO(GPIO84_VPAC270_PCMCIA_CD), | |
41 | .str = "PCMCIA CD" | |
42 | }, | |
43 | { | |
44 | .sock = 1, | |
45 | .irq = IRQ_GPIO(GPIO17_VPAC270_CF_CD), | |
46 | .str = "CF CD" | |
47 | }, | |
48 | }; | |
49 | ||
50 | static int vpac270_pcmcia_hw_init(struct soc_pcmcia_socket *skt) | |
51 | { | |
52 | int ret; | |
53 | ||
54 | if (skt->nr == 0) { | |
e27af7ed MV |
55 | ret = gpio_request_array(vpac270_pcmcia_gpios, |
56 | ARRAY_SIZE(vpac270_pcmcia_gpios)); | |
addff0fa MV |
57 | |
58 | skt->socket.pci_irq = gpio_to_irq(GPIO35_VPAC270_PCMCIA_RDY); | |
59 | ||
e27af7ed MV |
60 | if (!ret) |
61 | ret = soc_pcmcia_request_irqs(skt, &cd_irqs[0], 1); | |
addff0fa | 62 | } else { |
e27af7ed MV |
63 | ret = gpio_request_array(vpac270_cf_gpios, |
64 | ARRAY_SIZE(vpac270_cf_gpios)); | |
addff0fa MV |
65 | |
66 | skt->socket.pci_irq = gpio_to_irq(GPIO12_VPAC270_CF_RDY); | |
67 | ||
e27af7ed MV |
68 | if (!ret) |
69 | ret = soc_pcmcia_request_irqs(skt, &cd_irqs[1], 1); | |
addff0fa | 70 | } |
e27af7ed MV |
71 | |
72 | return ret; | |
addff0fa MV |
73 | } |
74 | ||
75 | static void vpac270_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) | |
76 | { | |
e27af7ed MV |
77 | if (skt->nr == 0) |
78 | gpio_request_array(vpac270_pcmcia_gpios, | |
79 | ARRAY_SIZE(vpac270_pcmcia_gpios)); | |
80 | else | |
81 | gpio_request_array(vpac270_cf_gpios, | |
82 | ARRAY_SIZE(vpac270_cf_gpios)); | |
addff0fa MV |
83 | } |
84 | ||
85 | static void vpac270_pcmcia_socket_state(struct soc_pcmcia_socket *skt, | |
86 | struct pcmcia_state *state) | |
87 | { | |
88 | if (skt->nr == 0) { | |
89 | state->detect = !gpio_get_value(GPIO84_VPAC270_PCMCIA_CD); | |
90 | state->ready = !!gpio_get_value(GPIO35_VPAC270_PCMCIA_RDY); | |
91 | } else { | |
92 | state->detect = !gpio_get_value(GPIO17_VPAC270_CF_CD); | |
93 | state->ready = !!gpio_get_value(GPIO12_VPAC270_CF_RDY); | |
94 | } | |
95 | state->bvd1 = 1; | |
96 | state->bvd2 = 1; | |
97 | state->wrprot = 0; | |
98 | state->vs_3v = 1; | |
99 | state->vs_Xv = 0; | |
100 | } | |
101 | ||
102 | static int | |
103 | vpac270_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, | |
104 | const socket_state_t *state) | |
105 | { | |
106 | if (skt->nr == 0) { | |
107 | gpio_set_value(GPIO11_VPAC270_PCMCIA_RESET, | |
108 | (state->flags & SS_RESET)); | |
109 | gpio_set_value(GPIO107_VPAC270_PCMCIA_PPEN, | |
110 | !(state->Vcc == 33 || state->Vcc == 50)); | |
111 | } else { | |
112 | gpio_set_value(GPIO16_VPAC270_CF_RESET, | |
113 | (state->flags & SS_RESET)); | |
114 | } | |
115 | ||
116 | return 0; | |
117 | } | |
118 | ||
119 | static void vpac270_pcmcia_socket_init(struct soc_pcmcia_socket *skt) | |
120 | { | |
121 | } | |
122 | ||
123 | static void vpac270_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) | |
124 | { | |
125 | } | |
126 | ||
127 | static struct pcmcia_low_level vpac270_pcmcia_ops = { | |
128 | .owner = THIS_MODULE, | |
129 | ||
130 | .first = 0, | |
131 | .nr = 2, | |
132 | ||
133 | .hw_init = vpac270_pcmcia_hw_init, | |
134 | .hw_shutdown = vpac270_pcmcia_hw_shutdown, | |
135 | ||
136 | .socket_state = vpac270_pcmcia_socket_state, | |
137 | .configure_socket = vpac270_pcmcia_configure_socket, | |
138 | ||
139 | .socket_init = vpac270_pcmcia_socket_init, | |
140 | .socket_suspend = vpac270_pcmcia_socket_suspend, | |
141 | }; | |
142 | ||
143 | static struct platform_device *vpac270_pcmcia_device; | |
144 | ||
145 | static int __init vpac270_pcmcia_init(void) | |
146 | { | |
147 | int ret; | |
148 | ||
149 | if (!machine_is_vpac270()) | |
150 | return -ENODEV; | |
151 | ||
152 | vpac270_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); | |
153 | if (!vpac270_pcmcia_device) | |
154 | return -ENOMEM; | |
155 | ||
156 | ret = platform_device_add_data(vpac270_pcmcia_device, | |
157 | &vpac270_pcmcia_ops, sizeof(vpac270_pcmcia_ops)); | |
158 | ||
159 | if (!ret) | |
160 | ret = platform_device_add(vpac270_pcmcia_device); | |
161 | ||
162 | if (ret) | |
163 | platform_device_put(vpac270_pcmcia_device); | |
164 | ||
165 | return ret; | |
166 | } | |
167 | ||
168 | static void __exit vpac270_pcmcia_exit(void) | |
169 | { | |
170 | platform_device_unregister(vpac270_pcmcia_device); | |
171 | } | |
172 | ||
173 | module_init(vpac270_pcmcia_init); | |
174 | module_exit(vpac270_pcmcia_exit); | |
175 | ||
176 | MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>"); | |
177 | MODULE_DESCRIPTION("PCMCIA support for Voipac PXA270"); | |
178 | MODULE_ALIAS("platform:pxa2xx-pcmcia"); | |
179 | MODULE_LICENSE("GPL"); |