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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 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 | } |