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1da177e4 LT |
1 | /* |
2 | * drivers/pcmcia/sa1100_h3600.c | |
3 | * | |
4 | * PCMCIA implementation routines for H3600 | |
5 | * | |
6 | */ | |
7 | #include <linux/module.h> | |
8 | #include <linux/kernel.h> | |
1da177e4 LT |
9 | #include <linux/device.h> |
10 | #include <linux/interrupt.h> | |
11 | #include <linux/init.h> | |
12 | #include <linux/delay.h> | |
13 | ||
a09e64fb | 14 | #include <mach/hardware.h> |
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15 | #include <asm/irq.h> |
16 | #include <asm/mach-types.h> | |
a09e64fb | 17 | #include <mach/h3600.h> |
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18 | |
19 | #include "sa1100_generic.h" | |
20 | ||
21 | static struct pcmcia_irqs irqs[] = { | |
22 | { 0, IRQ_GPIO_H3600_PCMCIA_CD0, "PCMCIA CD0" }, | |
23 | { 1, IRQ_GPIO_H3600_PCMCIA_CD1, "PCMCIA CD1" } | |
24 | }; | |
25 | ||
26 | static int h3600_pcmcia_hw_init(struct soc_pcmcia_socket *skt) | |
27 | { | |
28 | skt->irq = skt->nr ? IRQ_GPIO_H3600_PCMCIA_IRQ1 | |
29 | : IRQ_GPIO_H3600_PCMCIA_IRQ0; | |
30 | ||
31 | ||
32 | return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs)); | |
33 | } | |
34 | ||
35 | static void h3600_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) | |
36 | { | |
37 | soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs)); | |
38 | ||
39 | /* Disable CF bus: */ | |
104a416d DA |
40 | assign_h3600_egpio(IPAQ_EGPIO_OPT_NVRAM_ON, 0); |
41 | assign_h3600_egpio(IPAQ_EGPIO_OPT_ON, 0); | |
42 | assign_h3600_egpio(IPAQ_EGPIO_OPT_RESET, 1); | |
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43 | } |
44 | ||
45 | static void | |
46 | h3600_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state) | |
47 | { | |
48 | unsigned long levels = GPLR; | |
49 | ||
50 | switch (skt->nr) { | |
51 | case 0: | |
52 | state->detect = levels & GPIO_H3600_PCMCIA_CD0 ? 0 : 1; | |
53 | state->ready = levels & GPIO_H3600_PCMCIA_IRQ0 ? 1 : 0; | |
54 | state->bvd1 = 0; | |
55 | state->bvd2 = 0; | |
56 | state->wrprot = 0; /* Not available on H3600. */ | |
57 | state->vs_3v = 0; | |
58 | state->vs_Xv = 0; | |
59 | break; | |
60 | ||
61 | case 1: | |
62 | state->detect = levels & GPIO_H3600_PCMCIA_CD1 ? 0 : 1; | |
63 | state->ready = levels & GPIO_H3600_PCMCIA_IRQ1 ? 1 : 0; | |
64 | state->bvd1 = 0; | |
65 | state->bvd2 = 0; | |
66 | state->wrprot = 0; /* Not available on H3600. */ | |
67 | state->vs_3v = 0; | |
68 | state->vs_Xv = 0; | |
69 | break; | |
70 | } | |
71 | } | |
72 | ||
73 | static int | |
74 | h3600_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state) | |
75 | { | |
76 | if (state->Vcc != 0 && state->Vcc != 33 && state->Vcc != 50) { | |
77 | printk(KERN_ERR "h3600_pcmcia: unrecognized Vcc %u.%uV\n", | |
78 | state->Vcc / 10, state->Vcc % 10); | |
79 | return -1; | |
80 | } | |
81 | ||
104a416d | 82 | assign_h3600_egpio(IPAQ_EGPIO_CARD_RESET, !!(state->flags & SS_RESET)); |
1da177e4 LT |
83 | |
84 | /* Silently ignore Vpp, output enable, speaker enable. */ | |
85 | ||
86 | return 0; | |
87 | } | |
88 | ||
89 | static void h3600_pcmcia_socket_init(struct soc_pcmcia_socket *skt) | |
90 | { | |
91 | /* Enable CF bus: */ | |
104a416d DA |
92 | assign_h3600_egpio(IPAQ_EGPIO_OPT_NVRAM_ON, 1); |
93 | assign_h3600_egpio(IPAQ_EGPIO_OPT_ON, 1); | |
94 | assign_h3600_egpio(IPAQ_EGPIO_OPT_RESET, 0); | |
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95 | |
96 | msleep(10); | |
97 | ||
98 | soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs)); | |
99 | } | |
100 | ||
101 | static void h3600_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) | |
102 | { | |
103 | soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs)); | |
104 | ||
105 | /* | |
106 | * FIXME: This doesn't fit well. We don't have the mechanism in | |
107 | * the generic PCMCIA layer to deal with the idea of two sockets | |
108 | * on one bus. We rely on the cs.c behaviour shutting down | |
109 | * socket 0 then socket 1. | |
110 | */ | |
111 | if (skt->nr == 1) { | |
104a416d DA |
112 | assign_h3600_egpio(IPAQ_EGPIO_OPT_ON, 0); |
113 | assign_h3600_egpio(IPAQ_EGPIO_OPT_NVRAM_ON, 0); | |
1da177e4 | 114 | /* hmm, does this suck power? */ |
104a416d | 115 | assign_h3600_egpio(IPAQ_EGPIO_OPT_RESET, 1); |
1da177e4 LT |
116 | } |
117 | } | |
118 | ||
119 | struct pcmcia_low_level h3600_pcmcia_ops = { | |
120 | .owner = THIS_MODULE, | |
121 | .hw_init = h3600_pcmcia_hw_init, | |
122 | .hw_shutdown = h3600_pcmcia_hw_shutdown, | |
123 | .socket_state = h3600_pcmcia_socket_state, | |
124 | .configure_socket = h3600_pcmcia_configure_socket, | |
125 | ||
126 | .socket_init = h3600_pcmcia_socket_init, | |
127 | .socket_suspend = h3600_pcmcia_socket_suspend, | |
128 | }; | |
129 | ||
130 | int __init pcmcia_h3600_init(struct device *dev) | |
131 | { | |
132 | int ret = -ENODEV; | |
133 | ||
134 | if (machine_is_h3600()) | |
135 | ret = sa11xx_drv_pcmcia_probe(dev, &h3600_pcmcia_ops, 0, 2); | |
136 | ||
137 | return ret; | |
138 | } |