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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 | #include <linux/gpio.h> |
14 | |
15 | #include <mach/hardware.h> |
16 | #include <asm/mach-types.h> |
17 | #include <asm/irq.h> |
18 | #include <mach/cerf.h> |
19 | #include "sa1100_generic.h" |
20 | |
21 | #define CERF_SOCKET 1 |
22 | |
23 | static int cerf_pcmcia_hw_init(struct soc_pcmcia_socket *skt) |
24 | { |
25 | int ret; |
26 | |
27 | ret = gpio_request_one(CERF_GPIO_CF_RESET, GPIOF_OUT_INIT_LOW, "CF_RESET"); |
28 | if (ret) |
29 | return ret; |
30 | |
31 | skt->stat[SOC_STAT_CD].gpio = CERF_GPIO_CF_CD; |
32 | skt->stat[SOC_STAT_CD].name = "CF_CD"; |
33 | skt->stat[SOC_STAT_BVD1].gpio = CERF_GPIO_CF_BVD1; |
34 | skt->stat[SOC_STAT_BVD1].name = "CF_BVD1"; |
35 | skt->stat[SOC_STAT_BVD2].gpio = CERF_GPIO_CF_BVD2; |
36 | skt->stat[SOC_STAT_BVD2].name = "CF_BVD2"; |
37 | skt->stat[SOC_STAT_RDY].gpio = CERF_GPIO_CF_IRQ; |
38 | skt->stat[SOC_STAT_RDY].name = "CF_IRQ"; |
39 | |
40 | return 0; |
41 | } |
42 | |
43 | static void cerf_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) |
44 | { |
45 | gpio_free(CERF_GPIO_CF_RESET); |
46 | } |
47 | |
48 | static void |
49 | cerf_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state) |
50 | { |
51 | state->vs_3v = 1; |
52 | state->vs_Xv = 0; |
53 | } |
54 | |
55 | static int |
56 | cerf_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, |
57 | const socket_state_t *state) |
58 | { |
59 | switch (state->Vcc) { |
60 | case 0: |
61 | case 50: |
62 | case 33: |
63 | break; |
64 | |
65 | default: |
66 | printk(KERN_ERR "%s(): unrecognized Vcc %u\n", |
67 | __func__, state->Vcc); |
68 | return -1; |
69 | } |
70 | |
71 | gpio_set_value(CERF_GPIO_CF_RESET, !!(state->flags & SS_RESET)); |
72 | |
73 | return 0; |
74 | } |
75 | |
76 | static struct pcmcia_low_level cerf_pcmcia_ops = { |
77 | .owner = THIS_MODULE, |
78 | .hw_init = cerf_pcmcia_hw_init, |
79 | .hw_shutdown = cerf_pcmcia_hw_shutdown, |
80 | .socket_state = cerf_pcmcia_socket_state, |
81 | .configure_socket = cerf_pcmcia_configure_socket, |
82 | }; |
83 | |
84 | int __devinit pcmcia_cerf_init(struct device *dev) |
85 | { |
86 | int ret = -ENODEV; |
87 | |
88 | if (machine_is_cerf()) |
89 | ret = sa11xx_drv_pcmcia_probe(dev, &cerf_pcmcia_ops, CERF_SOCKET, 1); |
90 | |
91 | return ret; |
92 | } |
93 |
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