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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 int h3600_pcmcia_hw_init(struct soc_pcmcia_socket *skt) |
23 | { |
24 | int err; |
25 | |
26 | switch (skt->nr) { |
27 | case 0: |
28 | skt->stat[SOC_STAT_CD].gpio = H3XXX_GPIO_PCMCIA_CD0; |
29 | skt->stat[SOC_STAT_CD].name = "PCMCIA CD0"; |
30 | skt->stat[SOC_STAT_RDY].gpio = H3XXX_GPIO_PCMCIA_IRQ0; |
31 | skt->stat[SOC_STAT_RDY].name = "PCMCIA IRQ0"; |
32 | |
33 | err = gpio_request(H3XXX_EGPIO_OPT_NVRAM_ON, "OPT NVRAM ON"); |
34 | if (err) |
35 | goto err01; |
36 | err = gpio_direction_output(H3XXX_EGPIO_OPT_NVRAM_ON, 0); |
37 | if (err) |
38 | goto err03; |
39 | err = gpio_request(H3XXX_EGPIO_OPT_ON, "OPT ON"); |
40 | if (err) |
41 | goto err03; |
42 | err = gpio_direction_output(H3XXX_EGPIO_OPT_ON, 0); |
43 | if (err) |
44 | goto err04; |
45 | err = gpio_request(H3XXX_EGPIO_OPT_RESET, "OPT RESET"); |
46 | if (err) |
47 | goto err04; |
48 | err = gpio_direction_output(H3XXX_EGPIO_OPT_RESET, 0); |
49 | if (err) |
50 | goto err05; |
51 | err = gpio_request(H3XXX_EGPIO_CARD_RESET, "PCMCIA CARD RESET"); |
52 | if (err) |
53 | goto err05; |
54 | err = gpio_direction_output(H3XXX_EGPIO_CARD_RESET, 0); |
55 | if (err) |
56 | goto err06; |
57 | break; |
58 | case 1: |
59 | skt->stat[SOC_STAT_CD].gpio = H3XXX_GPIO_PCMCIA_CD1; |
60 | skt->stat[SOC_STAT_CD].name = "PCMCIA CD1"; |
61 | skt->stat[SOC_STAT_RDY].gpio = H3XXX_GPIO_PCMCIA_IRQ1; |
62 | skt->stat[SOC_STAT_RDY].name = "PCMCIA IRQ1"; |
63 | break; |
64 | } |
65 | return 0; |
66 | |
67 | err06: gpio_free(H3XXX_EGPIO_CARD_RESET); |
68 | err05: gpio_free(H3XXX_EGPIO_OPT_RESET); |
69 | err04: gpio_free(H3XXX_EGPIO_OPT_ON); |
70 | err03: gpio_free(H3XXX_EGPIO_OPT_NVRAM_ON); |
71 | err01: gpio_free(H3XXX_GPIO_PCMCIA_IRQ0); |
72 | return err; |
73 | } |
74 | |
75 | static void h3600_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) |
76 | { |
77 | switch (skt->nr) { |
78 | case 0: |
79 | /* Disable CF bus: */ |
80 | gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 0); |
81 | gpio_set_value(H3XXX_EGPIO_OPT_ON, 0); |
82 | gpio_set_value(H3XXX_EGPIO_OPT_RESET, 1); |
83 | |
84 | gpio_free(H3XXX_EGPIO_CARD_RESET); |
85 | gpio_free(H3XXX_EGPIO_OPT_RESET); |
86 | gpio_free(H3XXX_EGPIO_OPT_ON); |
87 | gpio_free(H3XXX_EGPIO_OPT_NVRAM_ON); |
88 | break; |
89 | case 1: |
90 | break; |
91 | } |
92 | } |
93 | |
94 | static void |
95 | h3600_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state) |
96 | { |
97 | state->bvd1 = 0; |
98 | state->bvd2 = 0; |
99 | state->vs_3v = 0; |
100 | state->vs_Xv = 0; |
101 | } |
102 | |
103 | static int |
104 | h3600_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state) |
105 | { |
106 | if (state->Vcc != 0 && state->Vcc != 33 && state->Vcc != 50) { |
107 | printk(KERN_ERR "h3600_pcmcia: unrecognized Vcc %u.%uV\n", |
108 | state->Vcc / 10, state->Vcc % 10); |
109 | return -1; |
110 | } |
111 | |
112 | gpio_set_value(H3XXX_EGPIO_CARD_RESET, !!(state->flags & SS_RESET)); |
113 | |
114 | /* Silently ignore Vpp, output enable, speaker enable. */ |
115 | |
116 | return 0; |
117 | } |
118 | |
119 | static void h3600_pcmcia_socket_init(struct soc_pcmcia_socket *skt) |
120 | { |
121 | /* Enable CF bus: */ |
122 | gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 1); |
123 | gpio_set_value(H3XXX_EGPIO_OPT_ON, 1); |
124 | gpio_set_value(H3XXX_EGPIO_OPT_RESET, 0); |
125 | |
126 | msleep(10); |
127 | } |
128 | |
129 | static void h3600_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) |
130 | { |
131 | /* |
132 | * FIXME: This doesn't fit well. We don't have the mechanism in |
133 | * the generic PCMCIA layer to deal with the idea of two sockets |
134 | * on one bus. We rely on the cs.c behaviour shutting down |
135 | * socket 0 then socket 1. |
136 | */ |
137 | if (skt->nr == 1) { |
138 | gpio_set_value(H3XXX_EGPIO_OPT_ON, 0); |
139 | gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 0); |
140 | /* hmm, does this suck power? */ |
141 | gpio_set_value(H3XXX_EGPIO_OPT_RESET, 1); |
142 | } |
143 | } |
144 | |
145 | struct pcmcia_low_level h3600_pcmcia_ops = { |
146 | .owner = THIS_MODULE, |
147 | .hw_init = h3600_pcmcia_hw_init, |
148 | .hw_shutdown = h3600_pcmcia_hw_shutdown, |
149 | .socket_state = h3600_pcmcia_socket_state, |
150 | .configure_socket = h3600_pcmcia_configure_socket, |
151 | |
152 | .socket_init = h3600_pcmcia_socket_init, |
153 | .socket_suspend = h3600_pcmcia_socket_suspend, |
154 | }; |
155 | |
156 | int pcmcia_h3600_init(struct device *dev) |
157 | { |
158 | int ret = -ENODEV; |
159 | |
160 | if (machine_is_h3600() || machine_is_h3100()) |
161 | ret = sa11xx_drv_pcmcia_probe(dev, &h3600_pcmcia_ops, 0, 2); |
162 | |
163 | return ret; |
164 | } |
165 |
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