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1 | /* |
2 | * drivers/pcmcia/sa1100_cerf.c |
3 | * |
4 | * PCMCIA implementation routines for CerfBoard |
5 | * Based off the Assabet. |
6 | * |
7 | */ |
8 | #include <linux/module.h> |
9 | #include <linux/kernel.h> |
10 | #include <linux/device.h> |
11 | #include <linux/init.h> |
12 | #include <linux/delay.h> |
13 | |
14 | #include <mach/hardware.h> |
15 | #include <asm/mach-types.h> |
16 | #include <asm/irq.h> |
17 | #include <mach/cerf.h> |
18 | #include "sa1100_generic.h" |
19 | |
20 | #define CERF_SOCKET 1 |
21 | |
22 | static struct pcmcia_irqs irqs[] = { |
23 | { CERF_SOCKET, CERF_IRQ_GPIO_CF_CD, "CF_CD" }, |
24 | { CERF_SOCKET, CERF_IRQ_GPIO_CF_BVD2, "CF_BVD2" }, |
25 | { CERF_SOCKET, CERF_IRQ_GPIO_CF_BVD1, "CF_BVD1" } |
26 | }; |
27 | |
28 | static int cerf_pcmcia_hw_init(struct soc_pcmcia_socket *skt) |
29 | { |
30 | skt->socket.pci_irq = CERF_IRQ_GPIO_CF_IRQ; |
31 | |
32 | return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs)); |
33 | } |
34 | |
35 | static void cerf_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) |
36 | { |
37 | soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs)); |
38 | } |
39 | |
40 | static void |
41 | cerf_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state) |
42 | { |
43 | unsigned long levels = GPLR; |
44 | |
45 | state->detect = (levels & CERF_GPIO_CF_CD) ?0:1; |
46 | state->ready = (levels & CERF_GPIO_CF_IRQ) ?1:0; |
47 | state->bvd1 = (levels & CERF_GPIO_CF_BVD1)?1:0; |
48 | state->bvd2 = (levels & CERF_GPIO_CF_BVD2)?1:0; |
49 | state->wrprot = 0; |
50 | state->vs_3v = 1; |
51 | state->vs_Xv = 0; |
52 | } |
53 | |
54 | static int |
55 | cerf_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, |
56 | const socket_state_t *state) |
57 | { |
58 | switch (state->Vcc) { |
59 | case 0: |
60 | case 50: |
61 | case 33: |
62 | break; |
63 | |
64 | default: |
65 | printk(KERN_ERR "%s(): unrecognized Vcc %u\n", |
66 | __func__, state->Vcc); |
67 | return -1; |
68 | } |
69 | |
70 | if (state->flags & SS_RESET) { |
71 | GPSR = CERF_GPIO_CF_RESET; |
72 | } else { |
73 | GPCR = CERF_GPIO_CF_RESET; |
74 | } |
75 | |
76 | return 0; |
77 | } |
78 | |
79 | static void cerf_pcmcia_socket_init(struct soc_pcmcia_socket *skt) |
80 | { |
81 | soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs)); |
82 | } |
83 | |
84 | static void cerf_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) |
85 | { |
86 | soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs)); |
87 | } |
88 | |
89 | static struct pcmcia_low_level cerf_pcmcia_ops = { |
90 | .owner = THIS_MODULE, |
91 | .hw_init = cerf_pcmcia_hw_init, |
92 | .hw_shutdown = cerf_pcmcia_hw_shutdown, |
93 | .socket_state = cerf_pcmcia_socket_state, |
94 | .configure_socket = cerf_pcmcia_configure_socket, |
95 | |
96 | .socket_init = cerf_pcmcia_socket_init, |
97 | .socket_suspend = cerf_pcmcia_socket_suspend, |
98 | }; |
99 | |
100 | int __init pcmcia_cerf_init(struct device *dev) |
101 | { |
102 | int ret = -ENODEV; |
103 | |
104 | if (machine_is_cerf()) |
105 | ret = sa11xx_drv_pcmcia_probe(dev, &cerf_pcmcia_ops, CERF_SOCKET, 1); |
106 | |
107 | return ret; |
108 | } |
109 |
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Tags:
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