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Commit | Line | Data |
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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> | |
2a837091 | 13 | #include <linux/gpio.h> |
1da177e4 | 14 | |
a09e64fb | 15 | #include <mach/hardware.h> |
1da177e4 LT |
16 | #include <asm/irq.h> |
17 | #include <asm/mach-types.h> | |
a09e64fb | 18 | #include <mach/h3600.h> |
2a837091 | 19 | #include <mach/h3600_gpio.h> |
1da177e4 LT |
20 | |
21 | #include "sa1100_generic.h" | |
22 | ||
23 | static struct pcmcia_irqs irqs[] = { | |
2a837091 DA |
24 | { .sock = 0, .str = "PCMCIA CD0" }, /* .irq will be filled later */ |
25 | { .sock = 1, .str = "PCMCIA CD1" } | |
1da177e4 LT |
26 | }; |
27 | ||
28 | static int h3600_pcmcia_hw_init(struct soc_pcmcia_socket *skt) | |
29 | { | |
2a837091 | 30 | int err; |
1da177e4 | 31 | |
2a837091 DA |
32 | switch (skt->nr) { |
33 | case 0: | |
34 | err = gpio_request(H3XXX_GPIO_PCMCIA_IRQ0, "PCMCIA IRQ0"); | |
35 | if (err) | |
36 | goto err00; | |
37 | err = gpio_direction_input(H3XXX_GPIO_PCMCIA_IRQ0); | |
38 | if (err) | |
39 | goto err01; | |
40 | skt->socket.pci_irq = gpio_to_irq(H3XXX_GPIO_PCMCIA_IRQ0); | |
41 | ||
42 | err = gpio_request(H3XXX_GPIO_PCMCIA_CD0, "PCMCIA CD0"); | |
43 | if (err) | |
44 | goto err01; | |
45 | err = gpio_direction_input(H3XXX_GPIO_PCMCIA_CD0); | |
46 | if (err) | |
47 | goto err02; | |
48 | irqs[0].irq = gpio_to_irq(H3XXX_GPIO_PCMCIA_CD0); | |
49 | ||
22f97405 | 50 | err = gpio_request(H3XXX_EGPIO_OPT_NVRAM_ON, "OPT NVRAM ON"); |
2a837091 DA |
51 | if (err) |
52 | goto err02; | |
22f97405 DA |
53 | err = gpio_direction_output(H3XXX_EGPIO_OPT_NVRAM_ON, 0); |
54 | if (err) | |
55 | goto err03; | |
56 | err = gpio_request(H3XXX_EGPIO_OPT_ON, "OPT ON"); | |
57 | if (err) | |
58 | goto err03; | |
59 | err = gpio_direction_output(H3XXX_EGPIO_OPT_ON, 0); | |
60 | if (err) | |
61 | goto err04; | |
62 | err = gpio_request(H3XXX_EGPIO_OPT_RESET, "OPT RESET"); | |
63 | if (err) | |
64 | goto err04; | |
65 | err = gpio_direction_output(H3XXX_EGPIO_OPT_RESET, 0); | |
66 | if (err) | |
67 | goto err05; | |
68 | err = gpio_request(H3XXX_EGPIO_CARD_RESET, "PCMCIA CARD RESET"); | |
69 | if (err) | |
70 | goto err05; | |
71 | err = gpio_direction_output(H3XXX_EGPIO_CARD_RESET, 0); | |
72 | if (err) | |
73 | goto err06; | |
74 | err = soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs)); | |
75 | if (err) | |
76 | goto err06; | |
2a837091 DA |
77 | break; |
78 | case 1: | |
79 | err = gpio_request(H3XXX_GPIO_PCMCIA_IRQ1, "PCMCIA IRQ1"); | |
80 | if (err) | |
81 | goto err10; | |
82 | err = gpio_direction_input(H3XXX_GPIO_PCMCIA_IRQ1); | |
83 | if (err) | |
84 | goto err11; | |
85 | skt->socket.pci_irq = gpio_to_irq(H3XXX_GPIO_PCMCIA_IRQ1); | |
86 | ||
87 | err = gpio_request(H3XXX_GPIO_PCMCIA_CD1, "PCMCIA CD1"); | |
88 | if (err) | |
89 | goto err11; | |
90 | err = gpio_direction_input(H3XXX_GPIO_PCMCIA_CD1); | |
91 | if (err) | |
92 | goto err12; | |
93 | irqs[1].irq = gpio_to_irq(H3XXX_GPIO_PCMCIA_CD1); | |
94 | ||
95 | err = soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs)); | |
96 | if (err) | |
97 | goto err12; | |
98 | break; | |
99 | } | |
100 | return 0; | |
101 | ||
22f97405 DA |
102 | err06: gpio_free(H3XXX_EGPIO_CARD_RESET); |
103 | err05: gpio_free(H3XXX_EGPIO_OPT_RESET); | |
104 | err04: gpio_free(H3XXX_EGPIO_OPT_ON); | |
105 | err03: gpio_free(H3XXX_EGPIO_OPT_NVRAM_ON); | |
2a837091 DA |
106 | err02: gpio_free(H3XXX_GPIO_PCMCIA_CD0); |
107 | err01: gpio_free(H3XXX_GPIO_PCMCIA_IRQ0); | |
108 | err00: return err; | |
1da177e4 | 109 | |
2a837091 DA |
110 | err12: gpio_free(H3XXX_GPIO_PCMCIA_CD0); |
111 | err11: gpio_free(H3XXX_GPIO_PCMCIA_IRQ0); | |
112 | err10: return err; | |
1da177e4 LT |
113 | } |
114 | ||
115 | static void h3600_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) | |
116 | { | |
117 | soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs)); | |
118 | ||
2a837091 DA |
119 | switch (skt->nr) { |
120 | case 0: | |
22f97405 DA |
121 | /* Disable CF bus: */ |
122 | gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 0); | |
123 | gpio_set_value(H3XXX_EGPIO_OPT_ON, 0); | |
124 | gpio_set_value(H3XXX_EGPIO_OPT_RESET, 1); | |
125 | ||
126 | gpio_free(H3XXX_EGPIO_CARD_RESET); | |
127 | gpio_free(H3XXX_EGPIO_OPT_RESET); | |
128 | gpio_free(H3XXX_EGPIO_OPT_ON); | |
129 | gpio_free(H3XXX_EGPIO_OPT_NVRAM_ON); | |
2a837091 DA |
130 | gpio_free(H3XXX_GPIO_PCMCIA_CD0); |
131 | gpio_free(H3XXX_GPIO_PCMCIA_IRQ0); | |
132 | break; | |
133 | case 1: | |
134 | gpio_free(H3XXX_GPIO_PCMCIA_CD1); | |
135 | gpio_free(H3XXX_GPIO_PCMCIA_IRQ1); | |
136 | break; | |
137 | } | |
1da177e4 LT |
138 | } |
139 | ||
140 | static void | |
141 | h3600_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state) | |
142 | { | |
1da177e4 LT |
143 | switch (skt->nr) { |
144 | case 0: | |
2a837091 DA |
145 | state->detect = !gpio_get_value(H3XXX_GPIO_PCMCIA_CD0); |
146 | state->ready = !!gpio_get_value(H3XXX_GPIO_PCMCIA_IRQ0); | |
1da177e4 LT |
147 | state->bvd1 = 0; |
148 | state->bvd2 = 0; | |
149 | state->wrprot = 0; /* Not available on H3600. */ | |
150 | state->vs_3v = 0; | |
151 | state->vs_Xv = 0; | |
152 | break; | |
153 | ||
154 | case 1: | |
2a837091 DA |
155 | state->detect = !gpio_get_value(H3XXX_GPIO_PCMCIA_CD1); |
156 | state->ready = !!gpio_get_value(H3XXX_GPIO_PCMCIA_IRQ1); | |
1da177e4 LT |
157 | state->bvd1 = 0; |
158 | state->bvd2 = 0; | |
159 | state->wrprot = 0; /* Not available on H3600. */ | |
160 | state->vs_3v = 0; | |
161 | state->vs_Xv = 0; | |
162 | break; | |
163 | } | |
164 | } | |
165 | ||
166 | static int | |
167 | h3600_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state) | |
168 | { | |
169 | if (state->Vcc != 0 && state->Vcc != 33 && state->Vcc != 50) { | |
170 | printk(KERN_ERR "h3600_pcmcia: unrecognized Vcc %u.%uV\n", | |
171 | state->Vcc / 10, state->Vcc % 10); | |
172 | return -1; | |
173 | } | |
174 | ||
22f97405 | 175 | gpio_set_value(H3XXX_EGPIO_CARD_RESET, !!(state->flags & SS_RESET)); |
1da177e4 LT |
176 | |
177 | /* Silently ignore Vpp, output enable, speaker enable. */ | |
178 | ||
179 | return 0; | |
180 | } | |
181 | ||
182 | static void h3600_pcmcia_socket_init(struct soc_pcmcia_socket *skt) | |
183 | { | |
184 | /* Enable CF bus: */ | |
22f97405 DA |
185 | gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 1); |
186 | gpio_set_value(H3XXX_EGPIO_OPT_ON, 1); | |
187 | gpio_set_value(H3XXX_EGPIO_OPT_RESET, 0); | |
1da177e4 LT |
188 | |
189 | msleep(10); | |
190 | ||
191 | soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs)); | |
192 | } | |
193 | ||
194 | static void h3600_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) | |
195 | { | |
196 | soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs)); | |
197 | ||
198 | /* | |
199 | * FIXME: This doesn't fit well. We don't have the mechanism in | |
200 | * the generic PCMCIA layer to deal with the idea of two sockets | |
201 | * on one bus. We rely on the cs.c behaviour shutting down | |
202 | * socket 0 then socket 1. | |
203 | */ | |
204 | if (skt->nr == 1) { | |
22f97405 DA |
205 | gpio_set_value(H3XXX_EGPIO_OPT_ON, 0); |
206 | gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 0); | |
1da177e4 | 207 | /* hmm, does this suck power? */ |
22f97405 | 208 | gpio_set_value(H3XXX_EGPIO_OPT_RESET, 1); |
1da177e4 LT |
209 | } |
210 | } | |
211 | ||
212 | struct pcmcia_low_level h3600_pcmcia_ops = { | |
213 | .owner = THIS_MODULE, | |
214 | .hw_init = h3600_pcmcia_hw_init, | |
215 | .hw_shutdown = h3600_pcmcia_hw_shutdown, | |
216 | .socket_state = h3600_pcmcia_socket_state, | |
217 | .configure_socket = h3600_pcmcia_configure_socket, | |
218 | ||
219 | .socket_init = h3600_pcmcia_socket_init, | |
220 | .socket_suspend = h3600_pcmcia_socket_suspend, | |
221 | }; | |
222 | ||
223 | int __init pcmcia_h3600_init(struct device *dev) | |
224 | { | |
225 | int ret = -ENODEV; | |
226 | ||
227 | if (machine_is_h3600()) | |
228 | ret = sa11xx_drv_pcmcia_probe(dev, &h3600_pcmcia_ops, 0, 2); | |
229 | ||
230 | return ret; | |
231 | } |