Commit | Line | Data |
---|---|---|
1da177e4 LT |
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> | |
1da177e4 LT |
9 | #include <linux/device.h> |
10 | #include <linux/init.h> | |
11 | ||
a09e64fb | 12 | #include <mach/hardware.h> |
1da177e4 | 13 | #include <asm/mach-types.h> |
a09e64fb | 14 | #include <mach/shannon.h> |
1da177e4 LT |
15 | #include <asm/irq.h> |
16 | #include "sa1100_generic.h" | |
17 | ||
18 | static struct pcmcia_irqs irqs[] = { | |
19 | { 0, SHANNON_IRQ_GPIO_EJECT_0, "PCMCIA_CD_0" }, | |
20 | { 1, SHANNON_IRQ_GPIO_EJECT_1, "PCMCIA_CD_1" }, | |
21 | }; | |
22 | ||
23 | static int shannon_pcmcia_hw_init(struct soc_pcmcia_socket *skt) | |
24 | { | |
25 | /* All those are inputs */ | |
26 | GPDR &= ~(SHANNON_GPIO_EJECT_0 | SHANNON_GPIO_EJECT_1 | | |
27 | SHANNON_GPIO_RDY_0 | SHANNON_GPIO_RDY_1); | |
28 | GAFR &= ~(SHANNON_GPIO_EJECT_0 | SHANNON_GPIO_EJECT_1 | | |
29 | SHANNON_GPIO_RDY_0 | SHANNON_GPIO_RDY_1); | |
30 | ||
31 | skt->irq = skt->nr ? SHANNON_IRQ_GPIO_RDY_1 : SHANNON_IRQ_GPIO_RDY_0; | |
32 | ||
33 | return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs)); | |
34 | } | |
35 | ||
36 | static void shannon_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) | |
37 | { | |
38 | soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs)); | |
39 | } | |
40 | ||
41 | static void | |
42 | shannon_pcmcia_socket_state(struct soc_pcmcia_socket *skt, | |
43 | struct pcmcia_state *state) | |
44 | { | |
45 | unsigned long levels = GPLR; | |
46 | ||
47 | switch (skt->nr) { | |
48 | case 0: | |
49 | state->detect = (levels & SHANNON_GPIO_EJECT_0) ? 0 : 1; | |
50 | state->ready = (levels & SHANNON_GPIO_RDY_0) ? 1 : 0; | |
51 | state->wrprot = 0; /* Not available on Shannon. */ | |
52 | state->bvd1 = 1; | |
53 | state->bvd2 = 1; | |
54 | state->vs_3v = 1; /* FIXME Can only apply 3.3V on Shannon. */ | |
55 | state->vs_Xv = 0; | |
56 | break; | |
57 | ||
58 | case 1: | |
59 | state->detect = (levels & SHANNON_GPIO_EJECT_1) ? 0 : 1; | |
60 | state->ready = (levels & SHANNON_GPIO_RDY_1) ? 1 : 0; | |
61 | state->wrprot = 0; /* Not available on Shannon. */ | |
62 | state->bvd1 = 1; | |
63 | state->bvd2 = 1; | |
64 | state->vs_3v = 1; /* FIXME Can only apply 3.3V on Shannon. */ | |
65 | state->vs_Xv = 0; | |
66 | break; | |
67 | } | |
68 | } | |
69 | ||
70 | static int | |
71 | shannon_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, | |
72 | const socket_state_t *state) | |
73 | { | |
74 | switch (state->Vcc) { | |
75 | case 0: /* power off */ | |
2e11cb4c | 76 | printk(KERN_WARNING "%s(): CS asked for 0V, still applying 3.3V..\n", __func__); |
1da177e4 LT |
77 | break; |
78 | case 50: | |
2e11cb4c | 79 | printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V..\n", __func__); |
1da177e4 LT |
80 | case 33: |
81 | break; | |
82 | default: | |
83 | printk(KERN_ERR "%s(): unrecognized Vcc %u\n", | |
2e11cb4c | 84 | __func__, state->Vcc); |
1da177e4 LT |
85 | return -1; |
86 | } | |
87 | ||
2e11cb4c | 88 | printk(KERN_WARNING "%s(): Warning, Can't perform reset\n", __func__); |
1da177e4 LT |
89 | |
90 | /* Silently ignore Vpp, output enable, speaker enable. */ | |
91 | ||
92 | return 0; | |
93 | } | |
94 | ||
95 | static void shannon_pcmcia_socket_init(struct soc_pcmcia_socket *skt) | |
96 | { | |
97 | soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs)); | |
98 | } | |
99 | ||
100 | static void shannon_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) | |
101 | { | |
102 | soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs)); | |
103 | } | |
104 | ||
105 | static struct pcmcia_low_level shannon_pcmcia_ops = { | |
106 | .owner = THIS_MODULE, | |
107 | .hw_init = shannon_pcmcia_hw_init, | |
108 | .hw_shutdown = shannon_pcmcia_hw_shutdown, | |
109 | .socket_state = shannon_pcmcia_socket_state, | |
110 | .configure_socket = shannon_pcmcia_configure_socket, | |
111 | ||
112 | .socket_init = shannon_pcmcia_socket_init, | |
113 | .socket_suspend = shannon_pcmcia_socket_suspend, | |
114 | }; | |
115 | ||
116 | int __init pcmcia_shannon_init(struct device *dev) | |
117 | { | |
118 | int ret = -ENODEV; | |
119 | ||
120 | if (machine_is_shannon()) | |
121 | ret = sa11xx_drv_pcmcia_probe(dev, &shannon_pcmcia_ops, 0, 2); | |
122 | ||
123 | return ret; | |
124 | } |