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> | |
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 | ||
50 | err = soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs)); | |
51 | if (err) | |
52 | goto err02; | |
53 | break; | |
54 | case 1: | |
55 | err = gpio_request(H3XXX_GPIO_PCMCIA_IRQ1, "PCMCIA IRQ1"); | |
56 | if (err) | |
57 | goto err10; | |
58 | err = gpio_direction_input(H3XXX_GPIO_PCMCIA_IRQ1); | |
59 | if (err) | |
60 | goto err11; | |
61 | skt->socket.pci_irq = gpio_to_irq(H3XXX_GPIO_PCMCIA_IRQ1); | |
62 | ||
63 | err = gpio_request(H3XXX_GPIO_PCMCIA_CD1, "PCMCIA CD1"); | |
64 | if (err) | |
65 | goto err11; | |
66 | err = gpio_direction_input(H3XXX_GPIO_PCMCIA_CD1); | |
67 | if (err) | |
68 | goto err12; | |
69 | irqs[1].irq = gpio_to_irq(H3XXX_GPIO_PCMCIA_CD1); | |
70 | ||
71 | err = soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs)); | |
72 | if (err) | |
73 | goto err12; | |
74 | break; | |
75 | } | |
76 | return 0; | |
77 | ||
78 | err02: gpio_free(H3XXX_GPIO_PCMCIA_CD0); | |
79 | err01: gpio_free(H3XXX_GPIO_PCMCIA_IRQ0); | |
80 | err00: return err; | |
1da177e4 | 81 | |
2a837091 DA |
82 | err12: gpio_free(H3XXX_GPIO_PCMCIA_CD0); |
83 | err11: gpio_free(H3XXX_GPIO_PCMCIA_IRQ0); | |
84 | err10: return err; | |
1da177e4 LT |
85 | } |
86 | ||
87 | static void h3600_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) | |
88 | { | |
89 | soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs)); | |
90 | ||
91 | /* Disable CF bus: */ | |
104a416d DA |
92 | assign_h3600_egpio(IPAQ_EGPIO_OPT_NVRAM_ON, 0); |
93 | assign_h3600_egpio(IPAQ_EGPIO_OPT_ON, 0); | |
94 | assign_h3600_egpio(IPAQ_EGPIO_OPT_RESET, 1); | |
2a837091 DA |
95 | switch (skt->nr) { |
96 | case 0: | |
97 | gpio_free(H3XXX_GPIO_PCMCIA_CD0); | |
98 | gpio_free(H3XXX_GPIO_PCMCIA_IRQ0); | |
99 | break; | |
100 | case 1: | |
101 | gpio_free(H3XXX_GPIO_PCMCIA_CD1); | |
102 | gpio_free(H3XXX_GPIO_PCMCIA_IRQ1); | |
103 | break; | |
104 | } | |
1da177e4 LT |
105 | } |
106 | ||
107 | static void | |
108 | h3600_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state) | |
109 | { | |
1da177e4 LT |
110 | switch (skt->nr) { |
111 | case 0: | |
2a837091 DA |
112 | state->detect = !gpio_get_value(H3XXX_GPIO_PCMCIA_CD0); |
113 | state->ready = !!gpio_get_value(H3XXX_GPIO_PCMCIA_IRQ0); | |
1da177e4 LT |
114 | state->bvd1 = 0; |
115 | state->bvd2 = 0; | |
116 | state->wrprot = 0; /* Not available on H3600. */ | |
117 | state->vs_3v = 0; | |
118 | state->vs_Xv = 0; | |
119 | break; | |
120 | ||
121 | case 1: | |
2a837091 DA |
122 | state->detect = !gpio_get_value(H3XXX_GPIO_PCMCIA_CD1); |
123 | state->ready = !!gpio_get_value(H3XXX_GPIO_PCMCIA_IRQ1); | |
1da177e4 LT |
124 | state->bvd1 = 0; |
125 | state->bvd2 = 0; | |
126 | state->wrprot = 0; /* Not available on H3600. */ | |
127 | state->vs_3v = 0; | |
128 | state->vs_Xv = 0; | |
129 | break; | |
130 | } | |
131 | } | |
132 | ||
133 | static int | |
134 | h3600_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state) | |
135 | { | |
136 | if (state->Vcc != 0 && state->Vcc != 33 && state->Vcc != 50) { | |
137 | printk(KERN_ERR "h3600_pcmcia: unrecognized Vcc %u.%uV\n", | |
138 | state->Vcc / 10, state->Vcc % 10); | |
139 | return -1; | |
140 | } | |
141 | ||
104a416d | 142 | assign_h3600_egpio(IPAQ_EGPIO_CARD_RESET, !!(state->flags & SS_RESET)); |
1da177e4 LT |
143 | |
144 | /* Silently ignore Vpp, output enable, speaker enable. */ | |
145 | ||
146 | return 0; | |
147 | } | |
148 | ||
149 | static void h3600_pcmcia_socket_init(struct soc_pcmcia_socket *skt) | |
150 | { | |
151 | /* Enable CF bus: */ | |
104a416d DA |
152 | assign_h3600_egpio(IPAQ_EGPIO_OPT_NVRAM_ON, 1); |
153 | assign_h3600_egpio(IPAQ_EGPIO_OPT_ON, 1); | |
154 | assign_h3600_egpio(IPAQ_EGPIO_OPT_RESET, 0); | |
1da177e4 LT |
155 | |
156 | msleep(10); | |
157 | ||
158 | soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs)); | |
159 | } | |
160 | ||
161 | static void h3600_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) | |
162 | { | |
163 | soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs)); | |
164 | ||
165 | /* | |
166 | * FIXME: This doesn't fit well. We don't have the mechanism in | |
167 | * the generic PCMCIA layer to deal with the idea of two sockets | |
168 | * on one bus. We rely on the cs.c behaviour shutting down | |
169 | * socket 0 then socket 1. | |
170 | */ | |
171 | if (skt->nr == 1) { | |
104a416d DA |
172 | assign_h3600_egpio(IPAQ_EGPIO_OPT_ON, 0); |
173 | assign_h3600_egpio(IPAQ_EGPIO_OPT_NVRAM_ON, 0); | |
1da177e4 | 174 | /* hmm, does this suck power? */ |
104a416d | 175 | assign_h3600_egpio(IPAQ_EGPIO_OPT_RESET, 1); |
1da177e4 LT |
176 | } |
177 | } | |
178 | ||
179 | struct pcmcia_low_level h3600_pcmcia_ops = { | |
180 | .owner = THIS_MODULE, | |
181 | .hw_init = h3600_pcmcia_hw_init, | |
182 | .hw_shutdown = h3600_pcmcia_hw_shutdown, | |
183 | .socket_state = h3600_pcmcia_socket_state, | |
184 | .configure_socket = h3600_pcmcia_configure_socket, | |
185 | ||
186 | .socket_init = h3600_pcmcia_socket_init, | |
187 | .socket_suspend = h3600_pcmcia_socket_suspend, | |
188 | }; | |
189 | ||
190 | int __init pcmcia_h3600_init(struct device *dev) | |
191 | { | |
192 | int ret = -ENODEV; | |
193 | ||
194 | if (machine_is_h3600()) | |
195 | ret = sa11xx_drv_pcmcia_probe(dev, &h3600_pcmcia_ops, 0, 2); | |
196 | ||
197 | return ret; | |
198 | } |