Commit | Line | Data |
---|---|---|
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> | |
8715b29d | 18 | #include <mach/h3xxx.h> |
1da177e4 LT |
19 | |
20 | #include "sa1100_generic.h" | |
21 | ||
22 | static struct pcmcia_irqs irqs[] = { | |
2a837091 DA |
23 | { .sock = 0, .str = "PCMCIA CD0" }, /* .irq will be filled later */ |
24 | { .sock = 1, .str = "PCMCIA CD1" } | |
1da177e4 LT |
25 | }; |
26 | ||
27 | static int h3600_pcmcia_hw_init(struct soc_pcmcia_socket *skt) | |
28 | { | |
2a837091 | 29 | int err; |
1da177e4 | 30 | |
2a837091 DA |
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 | ||
22f97405 | 49 | err = gpio_request(H3XXX_EGPIO_OPT_NVRAM_ON, "OPT NVRAM ON"); |
2a837091 DA |
50 | if (err) |
51 | goto err02; | |
22f97405 DA |
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; | |
2a837091 DA |
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 | ||
22f97405 DA |
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); | |
2a837091 DA |
105 | err02: gpio_free(H3XXX_GPIO_PCMCIA_CD0); |
106 | err01: gpio_free(H3XXX_GPIO_PCMCIA_IRQ0); | |
107 | err00: return err; | |
1da177e4 | 108 | |
2a837091 DA |
109 | err12: gpio_free(H3XXX_GPIO_PCMCIA_CD0); |
110 | err11: gpio_free(H3XXX_GPIO_PCMCIA_IRQ0); | |
111 | err10: return err; | |
1da177e4 LT |
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 | ||
2a837091 DA |
118 | switch (skt->nr) { |
119 | case 0: | |
22f97405 DA |
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); | |
2a837091 DA |
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 | } | |
1da177e4 LT |
137 | } |
138 | ||
139 | static void | |
140 | h3600_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state) | |
141 | { | |
1da177e4 LT |
142 | switch (skt->nr) { |
143 | case 0: | |
2a837091 DA |
144 | state->detect = !gpio_get_value(H3XXX_GPIO_PCMCIA_CD0); |
145 | state->ready = !!gpio_get_value(H3XXX_GPIO_PCMCIA_IRQ0); | |
1da177e4 LT |
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: | |
2a837091 DA |
154 | state->detect = !gpio_get_value(H3XXX_GPIO_PCMCIA_CD1); |
155 | state->ready = !!gpio_get_value(H3XXX_GPIO_PCMCIA_IRQ1); | |
1da177e4 LT |
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 | ||
22f97405 | 174 | gpio_set_value(H3XXX_EGPIO_CARD_RESET, !!(state->flags & SS_RESET)); |
1da177e4 LT |
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: */ | |
22f97405 DA |
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); | |
1da177e4 LT |
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) { | |
22f97405 DA |
204 | gpio_set_value(H3XXX_EGPIO_OPT_ON, 0); |
205 | gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 0); | |
1da177e4 | 206 | /* hmm, does this suck power? */ |
22f97405 | 207 | gpio_set_value(H3XXX_EGPIO_OPT_RESET, 1); |
1da177e4 LT |
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 | ||
5b85e04e | 222 | int __devinit pcmcia_h3600_init(struct device *dev) |
1da177e4 LT |
223 | { |
224 | int ret = -ENODEV; | |
225 | ||
e7435f86 | 226 | if (machine_is_h3600() || machine_is_h3100()) |
1da177e4 LT |
227 | ret = sa11xx_drv_pcmcia_probe(dev, &h3600_pcmcia_ops, 0, 2); |
228 | ||
229 | return ret; | |
230 | } |