]>
Commit | Line | Data |
---|---|---|
1 | /* | |
2 | * linux/drivers/pcmcia/pxa/pxa_cm_x270.c | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License version 2 as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * Compulab Ltd., 2003, 2007, 2008 | |
9 | * Mike Rapoport <mike@compulab.co.il> | |
10 | * | |
11 | */ | |
12 | ||
13 | #include <linux/platform_device.h> | |
14 | #include <linux/irq.h> | |
15 | #include <linux/delay.h> | |
16 | #include <linux/gpio.h> | |
17 | ||
18 | #include <asm/mach-types.h> | |
19 | ||
20 | #include "soc_common.h" | |
21 | ||
22 | #define GPIO_PCMCIA_S0_CD_VALID (84) | |
23 | #define GPIO_PCMCIA_S0_RDYINT (82) | |
24 | #define GPIO_PCMCIA_RESET (53) | |
25 | ||
26 | #define PCMCIA_S0_CD_VALID IRQ_GPIO(GPIO_PCMCIA_S0_CD_VALID) | |
27 | #define PCMCIA_S0_RDYINT IRQ_GPIO(GPIO_PCMCIA_S0_RDYINT) | |
28 | ||
29 | ||
30 | static struct pcmcia_irqs irqs[] = { | |
31 | { 0, PCMCIA_S0_CD_VALID, "PCMCIA0 CD" }, | |
32 | }; | |
33 | ||
34 | static int cmx270_pcmcia_hw_init(struct soc_pcmcia_socket *skt) | |
35 | { | |
36 | int ret = gpio_request(GPIO_PCMCIA_RESET, "PCCard reset"); | |
37 | if (ret) | |
38 | return ret; | |
39 | gpio_direction_output(GPIO_PCMCIA_RESET, 0); | |
40 | ||
41 | skt->socket.pci_irq = PCMCIA_S0_RDYINT; | |
42 | ret = soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs)); | |
43 | if (!ret) | |
44 | gpio_free(GPIO_PCMCIA_RESET); | |
45 | ||
46 | return ret; | |
47 | } | |
48 | ||
49 | static void cmx270_pcmcia_shutdown(struct soc_pcmcia_socket *skt) | |
50 | { | |
51 | soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs)); | |
52 | gpio_free(GPIO_PCMCIA_RESET); | |
53 | } | |
54 | ||
55 | ||
56 | static void cmx270_pcmcia_socket_state(struct soc_pcmcia_socket *skt, | |
57 | struct pcmcia_state *state) | |
58 | { | |
59 | state->detect = (gpio_get_value(GPIO_PCMCIA_S0_CD_VALID) == 0) ? 1 : 0; | |
60 | state->ready = (gpio_get_value(GPIO_PCMCIA_S0_RDYINT) == 0) ? 0 : 1; | |
61 | state->bvd1 = 1; | |
62 | state->bvd2 = 1; | |
63 | state->vs_3v = 0; | |
64 | state->vs_Xv = 0; | |
65 | state->wrprot = 0; /* not available */ | |
66 | } | |
67 | ||
68 | ||
69 | static int cmx270_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, | |
70 | const socket_state_t *state) | |
71 | { | |
72 | switch (skt->nr) { | |
73 | case 0: | |
74 | if (state->flags & SS_RESET) { | |
75 | gpio_set_value(GPIO_PCMCIA_RESET, 1); | |
76 | udelay(10); | |
77 | gpio_set_value(GPIO_PCMCIA_RESET, 0); | |
78 | } | |
79 | break; | |
80 | } | |
81 | ||
82 | return 0; | |
83 | } | |
84 | ||
85 | static void cmx270_pcmcia_socket_init(struct soc_pcmcia_socket *skt) | |
86 | { | |
87 | } | |
88 | ||
89 | static void cmx270_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) | |
90 | { | |
91 | } | |
92 | ||
93 | ||
94 | static struct pcmcia_low_level cmx270_pcmcia_ops __initdata = { | |
95 | .owner = THIS_MODULE, | |
96 | .hw_init = cmx270_pcmcia_hw_init, | |
97 | .hw_shutdown = cmx270_pcmcia_shutdown, | |
98 | .socket_state = cmx270_pcmcia_socket_state, | |
99 | .configure_socket = cmx270_pcmcia_configure_socket, | |
100 | .socket_init = cmx270_pcmcia_socket_init, | |
101 | .socket_suspend = cmx270_pcmcia_socket_suspend, | |
102 | .nr = 1, | |
103 | }; | |
104 | ||
105 | static struct platform_device *cmx270_pcmcia_device; | |
106 | ||
107 | int __init cmx270_pcmcia_init(void) | |
108 | { | |
109 | int ret; | |
110 | ||
111 | cmx270_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); | |
112 | ||
113 | if (!cmx270_pcmcia_device) | |
114 | return -ENOMEM; | |
115 | ||
116 | ret = platform_device_add_data(cmx270_pcmcia_device, &cmx270_pcmcia_ops, | |
117 | sizeof(cmx270_pcmcia_ops)); | |
118 | ||
119 | if (ret == 0) { | |
120 | printk(KERN_INFO "Registering cm-x270 PCMCIA interface.\n"); | |
121 | ret = platform_device_add(cmx270_pcmcia_device); | |
122 | } | |
123 | ||
124 | if (ret) | |
125 | platform_device_put(cmx270_pcmcia_device); | |
126 | ||
127 | return ret; | |
128 | } | |
129 | ||
130 | void __exit cmx270_pcmcia_exit(void) | |
131 | { | |
132 | platform_device_unregister(cmx270_pcmcia_device); | |
133 | } |