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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> |
9 | #include <linux/device.h> |
10 | #include <linux/interrupt.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/irq.h> |
17 | #include <asm/mach-types.h> |
18 | #include <mach/h3xxx.h> |
19 | |
20 | #include "sa1100_generic.h" |
21 | |
22 | static struct pcmcia_irqs irqs[] = { |
23 | { .sock = 0, .str = "PCMCIA CD0" }, /* .irq will be filled later */ |
24 | { .sock = 1, .str = "PCMCIA CD1" } |
25 | }; |
26 | |
27 | static int h3600_pcmcia_hw_init(struct soc_pcmcia_socket *skt) |
28 | { |
29 | int err; |
30 | |
31 | switch (skt->nr) { |
32 | case 0: |
33 | err = gpio_request(H3XXX_GPIO_PCMCIA_IRQ0, "PCMCIA IRQ0"); |
34 | if (err) |
35 | goto err00; |
36 | err = gpio_direction_input(H3XXX_GPIO_PCMCIA_IRQ0); |
37 | if (err) |
38 | goto err01; |
39 | skt->socket.pci_irq = gpio_to_irq(H3XXX_GPIO_PCMCIA_IRQ0); |
40 | |
41 | err = gpio_request(H3XXX_GPIO_PCMCIA_CD0, "PCMCIA CD0"); |
42 | if (err) |
43 | goto err01; |
44 | err = gpio_direction_input(H3XXX_GPIO_PCMCIA_CD0); |
45 | if (err) |
46 | goto err02; |
47 | irqs[0].irq = gpio_to_irq(H3XXX_GPIO_PCMCIA_CD0); |
48 | |
49 | err = gpio_request(H3XXX_EGPIO_OPT_NVRAM_ON, "OPT NVRAM ON"); |
50 | if (err) |
51 | goto err02; |
52 | err = gpio_direction_output(H3XXX_EGPIO_OPT_NVRAM_ON, 0); |
53 | if (err) |
54 | goto err03; |
55 | err = gpio_request(H3XXX_EGPIO_OPT_ON, "OPT ON"); |
56 | if (err) |
57 | goto err03; |
58 | err = gpio_direction_output(H3XXX_EGPIO_OPT_ON, 0); |
59 | if (err) |
60 | goto err04; |
61 | err = gpio_request(H3XXX_EGPIO_OPT_RESET, "OPT RESET"); |
62 | if (err) |
63 | goto err04; |
64 | err = gpio_direction_output(H3XXX_EGPIO_OPT_RESET, 0); |
65 | if (err) |
66 | goto err05; |
67 | err = gpio_request(H3XXX_EGPIO_CARD_RESET, "PCMCIA CARD RESET"); |
68 | if (err) |
69 | goto err05; |
70 | err = gpio_direction_output(H3XXX_EGPIO_CARD_RESET, 0); |
71 | if (err) |
72 | goto err06; |
73 | err = soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs)); |
74 | if (err) |
75 | goto err06; |
76 | break; |
77 | case 1: |
78 | err = gpio_request(H3XXX_GPIO_PCMCIA_IRQ1, "PCMCIA IRQ1"); |
79 | if (err) |
80 | goto err10; |
81 | err = gpio_direction_input(H3XXX_GPIO_PCMCIA_IRQ1); |
82 | if (err) |
83 | goto err11; |
84 | skt->socket.pci_irq = gpio_to_irq(H3XXX_GPIO_PCMCIA_IRQ1); |
85 | |
86 | err = gpio_request(H3XXX_GPIO_PCMCIA_CD1, "PCMCIA CD1"); |
87 | if (err) |
88 | goto err11; |
89 | err = gpio_direction_input(H3XXX_GPIO_PCMCIA_CD1); |
90 | if (err) |
91 | goto err12; |
92 | irqs[1].irq = gpio_to_irq(H3XXX_GPIO_PCMCIA_CD1); |
93 | |
94 | err = soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs)); |
95 | if (err) |
96 | goto err12; |
97 | break; |
98 | } |
99 | return 0; |
100 | |
101 | err06: gpio_free(H3XXX_EGPIO_CARD_RESET); |
102 | err05: gpio_free(H3XXX_EGPIO_OPT_RESET); |
103 | err04: gpio_free(H3XXX_EGPIO_OPT_ON); |
104 | err03: gpio_free(H3XXX_EGPIO_OPT_NVRAM_ON); |
105 | err02: gpio_free(H3XXX_GPIO_PCMCIA_CD0); |
106 | err01: gpio_free(H3XXX_GPIO_PCMCIA_IRQ0); |
107 | err00: return err; |
108 | |
109 | err12: gpio_free(H3XXX_GPIO_PCMCIA_CD0); |
110 | err11: gpio_free(H3XXX_GPIO_PCMCIA_IRQ0); |
111 | err10: return err; |
112 | } |
113 | |
114 | static void h3600_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) |
115 | { |
116 | soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs)); |
117 | |
118 | switch (skt->nr) { |
119 | case 0: |
120 | /* Disable CF bus: */ |
121 | gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 0); |
122 | gpio_set_value(H3XXX_EGPIO_OPT_ON, 0); |
123 | gpio_set_value(H3XXX_EGPIO_OPT_RESET, 1); |
124 | |
125 | gpio_free(H3XXX_EGPIO_CARD_RESET); |
126 | gpio_free(H3XXX_EGPIO_OPT_RESET); |
127 | gpio_free(H3XXX_EGPIO_OPT_ON); |
128 | gpio_free(H3XXX_EGPIO_OPT_NVRAM_ON); |
129 | gpio_free(H3XXX_GPIO_PCMCIA_CD0); |
130 | gpio_free(H3XXX_GPIO_PCMCIA_IRQ0); |
131 | break; |
132 | case 1: |
133 | gpio_free(H3XXX_GPIO_PCMCIA_CD1); |
134 | gpio_free(H3XXX_GPIO_PCMCIA_IRQ1); |
135 | break; |
136 | } |
137 | } |
138 | |
139 | static void |
140 | h3600_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state) |
141 | { |
142 | switch (skt->nr) { |
143 | case 0: |
144 | state->detect = !gpio_get_value(H3XXX_GPIO_PCMCIA_CD0); |
145 | state->ready = !!gpio_get_value(H3XXX_GPIO_PCMCIA_IRQ0); |
146 | state->bvd1 = 0; |
147 | state->bvd2 = 0; |
148 | state->wrprot = 0; /* Not available on H3600. */ |
149 | state->vs_3v = 0; |
150 | state->vs_Xv = 0; |
151 | break; |
152 | |
153 | case 1: |
154 | state->detect = !gpio_get_value(H3XXX_GPIO_PCMCIA_CD1); |
155 | state->ready = !!gpio_get_value(H3XXX_GPIO_PCMCIA_IRQ1); |
156 | state->bvd1 = 0; |
157 | state->bvd2 = 0; |
158 | state->wrprot = 0; /* Not available on H3600. */ |
159 | state->vs_3v = 0; |
160 | state->vs_Xv = 0; |
161 | break; |
162 | } |
163 | } |
164 | |
165 | static int |
166 | h3600_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state) |
167 | { |
168 | if (state->Vcc != 0 && state->Vcc != 33 && state->Vcc != 50) { |
169 | printk(KERN_ERR "h3600_pcmcia: unrecognized Vcc %u.%uV\n", |
170 | state->Vcc / 10, state->Vcc % 10); |
171 | return -1; |
172 | } |
173 | |
174 | gpio_set_value(H3XXX_EGPIO_CARD_RESET, !!(state->flags & SS_RESET)); |
175 | |
176 | /* Silently ignore Vpp, output enable, speaker enable. */ |
177 | |
178 | return 0; |
179 | } |
180 | |
181 | static void h3600_pcmcia_socket_init(struct soc_pcmcia_socket *skt) |
182 | { |
183 | /* Enable CF bus: */ |
184 | gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 1); |
185 | gpio_set_value(H3XXX_EGPIO_OPT_ON, 1); |
186 | gpio_set_value(H3XXX_EGPIO_OPT_RESET, 0); |
187 | |
188 | msleep(10); |
189 | |
190 | soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs)); |
191 | } |
192 | |
193 | static void h3600_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) |
194 | { |
195 | soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs)); |
196 | |
197 | /* |
198 | * FIXME: This doesn't fit well. We don't have the mechanism in |
199 | * the generic PCMCIA layer to deal with the idea of two sockets |
200 | * on one bus. We rely on the cs.c behaviour shutting down |
201 | * socket 0 then socket 1. |
202 | */ |
203 | if (skt->nr == 1) { |
204 | gpio_set_value(H3XXX_EGPIO_OPT_ON, 0); |
205 | gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 0); |
206 | /* hmm, does this suck power? */ |
207 | gpio_set_value(H3XXX_EGPIO_OPT_RESET, 1); |
208 | } |
209 | } |
210 | |
211 | struct pcmcia_low_level h3600_pcmcia_ops = { |
212 | .owner = THIS_MODULE, |
213 | .hw_init = h3600_pcmcia_hw_init, |
214 | .hw_shutdown = h3600_pcmcia_hw_shutdown, |
215 | .socket_state = h3600_pcmcia_socket_state, |
216 | .configure_socket = h3600_pcmcia_configure_socket, |
217 | |
218 | .socket_init = h3600_pcmcia_socket_init, |
219 | .socket_suspend = h3600_pcmcia_socket_suspend, |
220 | }; |
221 | |
222 | int __init pcmcia_h3600_init(struct device *dev) |
223 | { |
224 | int ret = -ENODEV; |
225 | |
226 | if (machine_is_h3600() || machine_is_h3100()) |
227 | ret = sa11xx_drv_pcmcia_probe(dev, &h3600_pcmcia_ops, 0, 2); |
228 | |
229 | return ret; |
230 | } |
231 |
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