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960c0aca MV |
1 | /* |
2 | * linux/drivers/pcmcia/pxa2xx_colibri.c | |
3 | * | |
4 | * Driver for Toradex Colibri PXA270 CF socket | |
5 | * | |
6 | * Copyright (C) 2010 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> | |
16 | #include <linux/delay.h> | |
17 | #include <linux/gpio.h> | |
18 | ||
19 | #include <asm/mach-types.h> | |
20 | ||
21 | #include "soc_common.h" | |
22 | ||
23 | #define COLIBRI270_RESET_GPIO 53 | |
24 | #define COLIBRI270_PPEN_GPIO 107 | |
25 | #define COLIBRI270_BVD1_GPIO 83 | |
26 | #define COLIBRI270_BVD2_GPIO 82 | |
27 | #define COLIBRI270_DETECT_GPIO 84 | |
28 | #define COLIBRI270_READY_GPIO 1 | |
29 | ||
fd62999b MV |
30 | #define COLIBRI320_RESET_GPIO 77 |
31 | #define COLIBRI320_PPEN_GPIO 57 | |
32 | #define COLIBRI320_BVD1_GPIO 53 | |
33 | #define COLIBRI320_BVD2_GPIO 79 | |
34 | #define COLIBRI320_DETECT_GPIO 81 | |
35 | #define COLIBRI320_READY_GPIO 29 | |
36 | ||
e593106c MV |
37 | enum { |
38 | DETECT = 0, | |
39 | READY = 1, | |
40 | BVD1 = 2, | |
41 | BVD2 = 3, | |
42 | PPEN = 4, | |
43 | RESET = 5, | |
44 | }; | |
45 | ||
46 | /* Contents of this array are configured on-the-fly in init function */ | |
47 | static struct gpio colibri_pcmcia_gpios[] = { | |
48 | { 0, GPIOF_IN, "PCMCIA Detect" }, | |
49 | { 0, GPIOF_IN, "PCMCIA Ready" }, | |
50 | { 0, GPIOF_IN, "PCMCIA BVD1" }, | |
51 | { 0, GPIOF_IN, "PCMCIA BVD2" }, | |
52 | { 0, GPIOF_INIT_LOW, "PCMCIA PPEN" }, | |
53 | { 0, GPIOF_INIT_HIGH,"PCMCIA Reset" }, | |
54 | }; | |
960c0aca MV |
55 | |
56 | static struct pcmcia_irqs colibri_irqs[] = { | |
57 | { | |
58 | .sock = 0, | |
59 | .str = "PCMCIA CD" | |
60 | }, | |
61 | }; | |
62 | ||
63 | static int colibri_pcmcia_hw_init(struct soc_pcmcia_socket *skt) | |
64 | { | |
65 | int ret; | |
66 | ||
e593106c MV |
67 | ret = gpio_request_array(colibri_pcmcia_gpios, |
68 | ARRAY_SIZE(colibri_pcmcia_gpios)); | |
960c0aca MV |
69 | if (ret) |
70 | goto err1; | |
960c0aca | 71 | |
e593106c MV |
72 | colibri_irqs[0].irq = gpio_to_irq(colibri_pcmcia_gpios[DETECT].gpio); |
73 | skt->socket.pci_irq = gpio_to_irq(colibri_pcmcia_gpios[READY].gpio); | |
960c0aca | 74 | |
e593106c MV |
75 | ret = soc_pcmcia_request_irqs(skt, colibri_irqs, |
76 | ARRAY_SIZE(colibri_irqs)); | |
960c0aca | 77 | if (ret) |
e593106c | 78 | goto err2; |
960c0aca | 79 | |
e593106c | 80 | return ret; |
960c0aca | 81 | |
960c0aca | 82 | err2: |
e593106c MV |
83 | gpio_free_array(colibri_pcmcia_gpios, |
84 | ARRAY_SIZE(colibri_pcmcia_gpios)); | |
960c0aca MV |
85 | err1: |
86 | return ret; | |
87 | } | |
88 | ||
89 | static void colibri_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) | |
90 | { | |
e593106c MV |
91 | gpio_free_array(colibri_pcmcia_gpios, |
92 | ARRAY_SIZE(colibri_pcmcia_gpios)); | |
960c0aca MV |
93 | } |
94 | ||
95 | static void colibri_pcmcia_socket_state(struct soc_pcmcia_socket *skt, | |
96 | struct pcmcia_state *state) | |
97 | { | |
98 | ||
e593106c MV |
99 | state->detect = !!gpio_get_value(colibri_pcmcia_gpios[DETECT].gpio); |
100 | state->ready = !!gpio_get_value(colibri_pcmcia_gpios[READY].gpio); | |
101 | state->bvd1 = !!gpio_get_value(colibri_pcmcia_gpios[BVD1].gpio); | |
102 | state->bvd2 = !!gpio_get_value(colibri_pcmcia_gpios[BVD2].gpio); | |
960c0aca MV |
103 | state->wrprot = 0; |
104 | state->vs_3v = 1; | |
105 | state->vs_Xv = 0; | |
106 | } | |
107 | ||
108 | static int | |
109 | colibri_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, | |
110 | const socket_state_t *state) | |
111 | { | |
e593106c | 112 | gpio_set_value(colibri_pcmcia_gpios[PPEN].gpio, |
960c0aca | 113 | !(state->Vcc == 33 && state->Vpp < 50)); |
e593106c MV |
114 | gpio_set_value(colibri_pcmcia_gpios[RESET].gpio, |
115 | state->flags & SS_RESET); | |
960c0aca MV |
116 | return 0; |
117 | } | |
118 | ||
960c0aca MV |
119 | static struct pcmcia_low_level colibri_pcmcia_ops = { |
120 | .owner = THIS_MODULE, | |
121 | ||
122 | .first = 0, | |
123 | .nr = 1, | |
124 | ||
125 | .hw_init = colibri_pcmcia_hw_init, | |
126 | .hw_shutdown = colibri_pcmcia_hw_shutdown, | |
127 | ||
128 | .socket_state = colibri_pcmcia_socket_state, | |
129 | .configure_socket = colibri_pcmcia_configure_socket, | |
960c0aca MV |
130 | }; |
131 | ||
132 | static struct platform_device *colibri_pcmcia_device; | |
133 | ||
134 | static int __init colibri_pcmcia_init(void) | |
135 | { | |
136 | int ret; | |
137 | ||
8d9bd900 DES |
138 | if (!machine_is_colibri() && !machine_is_colibri320()) |
139 | return -ENODEV; | |
140 | ||
960c0aca MV |
141 | colibri_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); |
142 | if (!colibri_pcmcia_device) | |
143 | return -ENOMEM; | |
144 | ||
145 | /* Colibri PXA270 */ | |
146 | if (machine_is_colibri()) { | |
e593106c MV |
147 | colibri_pcmcia_gpios[RESET].gpio = COLIBRI270_RESET_GPIO; |
148 | colibri_pcmcia_gpios[PPEN].gpio = COLIBRI270_PPEN_GPIO; | |
149 | colibri_pcmcia_gpios[BVD1].gpio = COLIBRI270_BVD1_GPIO; | |
150 | colibri_pcmcia_gpios[BVD2].gpio = COLIBRI270_BVD2_GPIO; | |
151 | colibri_pcmcia_gpios[DETECT].gpio = COLIBRI270_DETECT_GPIO; | |
152 | colibri_pcmcia_gpios[READY].gpio = COLIBRI270_READY_GPIO; | |
fd62999b MV |
153 | /* Colibri PXA320 */ |
154 | } else if (machine_is_colibri320()) { | |
e593106c MV |
155 | colibri_pcmcia_gpios[RESET].gpio = COLIBRI320_RESET_GPIO; |
156 | colibri_pcmcia_gpios[PPEN].gpio = COLIBRI320_PPEN_GPIO; | |
157 | colibri_pcmcia_gpios[BVD1].gpio = COLIBRI320_BVD1_GPIO; | |
158 | colibri_pcmcia_gpios[BVD2].gpio = COLIBRI320_BVD2_GPIO; | |
159 | colibri_pcmcia_gpios[DETECT].gpio = COLIBRI320_DETECT_GPIO; | |
160 | colibri_pcmcia_gpios[READY].gpio = COLIBRI320_READY_GPIO; | |
960c0aca MV |
161 | } |
162 | ||
163 | ret = platform_device_add_data(colibri_pcmcia_device, | |
164 | &colibri_pcmcia_ops, sizeof(colibri_pcmcia_ops)); | |
165 | ||
166 | if (!ret) | |
167 | ret = platform_device_add(colibri_pcmcia_device); | |
168 | ||
169 | if (ret) | |
170 | platform_device_put(colibri_pcmcia_device); | |
171 | ||
172 | return ret; | |
173 | } | |
174 | ||
175 | static void __exit colibri_pcmcia_exit(void) | |
176 | { | |
177 | platform_device_unregister(colibri_pcmcia_device); | |
178 | } | |
179 | ||
180 | module_init(colibri_pcmcia_init); | |
181 | module_exit(colibri_pcmcia_exit); | |
182 | ||
183 | MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>"); | |
fd62999b | 184 | MODULE_DESCRIPTION("PCMCIA support for Toradex Colibri PXA270/PXA320"); |
960c0aca MV |
185 | MODULE_ALIAS("platform:pxa2xx-pcmcia"); |
186 | MODULE_LICENSE("GPL"); |