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1 | /* |
2 | * drivers/pcmcia/sa1100_shannon.c |
3 | * |
4 | * PCMCIA implementation routines for Shannon |
5 | * |
6 | */ |
7 | #include <linux/module.h> |
8 | #include <linux/kernel.h> |
9 | #include <linux/device.h> |
10 | #include <linux/init.h> |
11 | |
12 | #include <mach/hardware.h> |
13 | #include <asm/mach-types.h> |
14 | #include <mach/shannon.h> |
15 | #include <asm/irq.h> |
16 | #include "sa1100_generic.h" |
17 | |
18 | static int shannon_pcmcia_hw_init(struct soc_pcmcia_socket *skt) |
19 | { |
20 | /* All those are inputs */ |
21 | GAFR &= ~(GPIO_GPIO(SHANNON_GPIO_EJECT_0) | |
22 | GPIO_GPIO(SHANNON_GPIO_EJECT_1) | |
23 | GPIO_GPIO(SHANNON_GPIO_RDY_0) | |
24 | GPIO_GPIO(SHANNON_GPIO_RDY_1)); |
25 | |
26 | if (skt->nr == 0) { |
27 | skt->stat[SOC_STAT_CD].gpio = SHANNON_GPIO_EJECT_0; |
28 | skt->stat[SOC_STAT_CD].name = "PCMCIA_CD_0"; |
29 | skt->stat[SOC_STAT_RDY].gpio = SHANNON_GPIO_RDY_0; |
30 | skt->stat[SOC_STAT_RDY].name = "PCMCIA_RDY_0"; |
31 | } else { |
32 | skt->stat[SOC_STAT_CD].gpio = SHANNON_GPIO_EJECT_1; |
33 | skt->stat[SOC_STAT_CD].name = "PCMCIA_CD_1"; |
34 | skt->stat[SOC_STAT_RDY].gpio = SHANNON_GPIO_RDY_1; |
35 | skt->stat[SOC_STAT_RDY].name = "PCMCIA_RDY_1"; |
36 | } |
37 | |
38 | return 0; |
39 | } |
40 | |
41 | static void |
42 | shannon_pcmcia_socket_state(struct soc_pcmcia_socket *skt, |
43 | struct pcmcia_state *state) |
44 | { |
45 | switch (skt->nr) { |
46 | case 0: |
47 | state->bvd1 = 1; |
48 | state->bvd2 = 1; |
49 | state->vs_3v = 1; /* FIXME Can only apply 3.3V on Shannon. */ |
50 | state->vs_Xv = 0; |
51 | break; |
52 | |
53 | case 1: |
54 | state->bvd1 = 1; |
55 | state->bvd2 = 1; |
56 | state->vs_3v = 1; /* FIXME Can only apply 3.3V on Shannon. */ |
57 | state->vs_Xv = 0; |
58 | break; |
59 | } |
60 | } |
61 | |
62 | static int |
63 | shannon_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, |
64 | const socket_state_t *state) |
65 | { |
66 | switch (state->Vcc) { |
67 | case 0: /* power off */ |
68 | printk(KERN_WARNING "%s(): CS asked for 0V, still applying 3.3V..\n", __func__); |
69 | break; |
70 | case 50: |
71 | printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V..\n", __func__); |
72 | case 33: |
73 | break; |
74 | default: |
75 | printk(KERN_ERR "%s(): unrecognized Vcc %u\n", |
76 | __func__, state->Vcc); |
77 | return -1; |
78 | } |
79 | |
80 | printk(KERN_WARNING "%s(): Warning, Can't perform reset\n", __func__); |
81 | |
82 | /* Silently ignore Vpp, output enable, speaker enable. */ |
83 | |
84 | return 0; |
85 | } |
86 | |
87 | static struct pcmcia_low_level shannon_pcmcia_ops = { |
88 | .owner = THIS_MODULE, |
89 | .hw_init = shannon_pcmcia_hw_init, |
90 | .socket_state = shannon_pcmcia_socket_state, |
91 | .configure_socket = shannon_pcmcia_configure_socket, |
92 | }; |
93 | |
94 | int __devinit pcmcia_shannon_init(struct device *dev) |
95 | { |
96 | int ret = -ENODEV; |
97 | |
98 | if (machine_is_shannon()) |
99 | ret = sa11xx_drv_pcmcia_probe(dev, &shannon_pcmcia_ops, 0, 2); |
100 | |
101 | return ret; |
102 | } |
103 |
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