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1da177e4 LT |
1 | /* |
2 | * | |
3 | * MyCable board specific pcmcia routines. | |
4 | * | |
5 | * Copyright 2003 MontaVista Software Inc. | |
6 | * Author: Pete Popov, MontaVista Software, Inc. | |
7 | * ppopov@mvista.com or source@mvista.com | |
8 | * | |
9 | * ######################################################################## | |
10 | * | |
11 | * This program is free software; you can distribute it and/or modify it | |
12 | * under the terms of the GNU General Public License (Version 2) as | |
13 | * published by the Free Software Foundation. | |
14 | * | |
15 | * This program is distributed in the hope it will be useful, but WITHOUT | |
16 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
17 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
18 | * for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License along | |
21 | * with this program; if not, write to the Free Software Foundation, Inc., | |
22 | * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. | |
23 | * | |
24 | * ######################################################################## | |
25 | * | |
26 | * | |
27 | */ | |
28 | #include <linux/module.h> | |
29 | #include <linux/init.h> | |
1da177e4 LT |
30 | #include <linux/delay.h> |
31 | #include <linux/ioport.h> | |
32 | #include <linux/kernel.h> | |
33 | #include <linux/tqueue.h> | |
34 | #include <linux/timer.h> | |
35 | #include <linux/mm.h> | |
36 | #include <linux/proc_fs.h> | |
1da177e4 LT |
37 | #include <linux/types.h> |
38 | ||
1da177e4 LT |
39 | #include <pcmcia/cs_types.h> |
40 | #include <pcmcia/cs.h> | |
41 | #include <pcmcia/ss.h> | |
1da177e4 LT |
42 | #include <pcmcia/cistpl.h> |
43 | #include <pcmcia/bus_ops.h> | |
1da177e4 LT |
44 | |
45 | #include <asm/io.h> | |
46 | #include <asm/irq.h> | |
47 | #include <asm/system.h> | |
48 | ||
49 | #include <asm/au1000.h> | |
50 | #include <asm/au1000_pcmcia.h> | |
b5446b51 YY |
51 | |
52 | #define PCMCIA_MAX_SOCK 0 | |
53 | #define PCMCIA_NUM_SOCKS (PCMCIA_MAX_SOCK + 1) | |
54 | #define PCMCIA_IRQ AU1000_GPIO_4 | |
1da177e4 LT |
55 | |
56 | #if 0 | |
2e11cb4c | 57 | #define DEBUG(x, args...) printk(__func__ ": " x, ##args) |
1da177e4 LT |
58 | #else |
59 | #define DEBUG(x,args...) | |
60 | #endif | |
61 | ||
62 | static int xxs1500_pcmcia_init(struct pcmcia_init *init) | |
63 | { | |
64 | return PCMCIA_NUM_SOCKS; | |
65 | } | |
66 | ||
67 | static int xxs1500_pcmcia_shutdown(void) | |
68 | { | |
69 | /* turn off power */ | |
70 | au_writel(au_readl(GPIO2_PINSTATE) | (1<<14)|(1<<30), | |
71 | GPIO2_OUTPUT); | |
72 | au_sync_delay(100); | |
73 | ||
74 | /* assert reset */ | |
75 | au_writel(au_readl(GPIO2_PINSTATE) | (1<<4)|(1<<20), | |
76 | GPIO2_OUTPUT); | |
77 | au_sync_delay(100); | |
78 | return 0; | |
79 | } | |
80 | ||
81 | ||
82 | static int | |
83 | xxs1500_pcmcia_socket_state(unsigned sock, struct pcmcia_state *state) | |
84 | { | |
85 | u32 inserted; u32 vs; | |
86 | unsigned long gpio, gpio2; | |
87 | ||
88 | if(sock > PCMCIA_MAX_SOCK) return -1; | |
89 | ||
90 | gpio = au_readl(SYS_PINSTATERD); | |
91 | gpio2 = au_readl(GPIO2_PINSTATE); | |
92 | ||
93 | vs = gpio2 & ((1<<8) | (1<<9)); | |
94 | inserted = (!(gpio & 0x1) && !(gpio & 0x2)); | |
95 | ||
96 | state->ready = 0; | |
97 | state->vs_Xv = 0; | |
98 | state->vs_3v = 0; | |
99 | state->detect = 0; | |
100 | ||
101 | if (inserted) { | |
102 | switch (vs) { | |
103 | case 0: | |
104 | case 1: | |
105 | case 2: | |
106 | state->vs_3v=1; | |
107 | break; | |
108 | case 3: /* 5V */ | |
109 | default: | |
110 | /* return without setting 'detect' */ | |
111 | printk(KERN_ERR "au1x00_cs: unsupported VS\n", | |
112 | vs); | |
113 | return; | |
114 | } | |
115 | state->detect = 1; | |
116 | } | |
117 | ||
118 | if (state->detect) { | |
119 | state->ready = 1; | |
120 | } | |
121 | ||
122 | state->bvd1= gpio2 & (1<<10); | |
123 | state->bvd2 = gpio2 & (1<<11); | |
124 | state->wrprot=0; | |
125 | return 1; | |
126 | } | |
127 | ||
128 | ||
129 | static int xxs1500_pcmcia_get_irq_info(struct pcmcia_irq_info *info) | |
130 | { | |
131 | ||
132 | if(info->sock > PCMCIA_MAX_SOCK) return -1; | |
133 | info->irq = PCMCIA_IRQ; | |
134 | return 0; | |
135 | } | |
136 | ||
137 | ||
138 | static int | |
139 | xxs1500_pcmcia_configure_socket(const struct pcmcia_configure *configure) | |
140 | { | |
141 | ||
142 | if(configure->sock > PCMCIA_MAX_SOCK) return -1; | |
143 | ||
144 | DEBUG("Vcc %dV Vpp %dV, reset %d\n", | |
145 | configure->vcc, configure->vpp, configure->reset); | |
146 | ||
147 | switch(configure->vcc){ | |
148 | case 33: /* Vcc 3.3V */ | |
149 | /* turn on power */ | |
150 | DEBUG("turn on power\n"); | |
151 | au_writel((au_readl(GPIO2_PINSTATE) & ~(1<<14))|(1<<30), | |
152 | GPIO2_OUTPUT); | |
153 | au_sync_delay(100); | |
154 | break; | |
155 | case 50: /* Vcc 5V */ | |
156 | default: /* what's this ? */ | |
157 | printk(KERN_ERR "au1x00_cs: unsupported VCC\n"); | |
158 | case 0: /* Vcc 0 */ | |
159 | /* turn off power */ | |
160 | au_sync_delay(100); | |
161 | au_writel(au_readl(GPIO2_PINSTATE) | (1<<14)|(1<<30), | |
162 | GPIO2_OUTPUT); | |
163 | break; | |
164 | } | |
165 | ||
166 | if (!configure->reset) { | |
167 | DEBUG("deassert reset\n"); | |
168 | au_writel((au_readl(GPIO2_PINSTATE) & ~(1<<4))|(1<<20), | |
169 | GPIO2_OUTPUT); | |
170 | au_sync_delay(100); | |
171 | au_writel((au_readl(GPIO2_PINSTATE) & ~(1<<5))|(1<<21), | |
172 | GPIO2_OUTPUT); | |
173 | } | |
174 | else { | |
175 | DEBUG("assert reset\n"); | |
176 | au_writel(au_readl(GPIO2_PINSTATE) | (1<<4)|(1<<20), | |
177 | GPIO2_OUTPUT); | |
178 | } | |
179 | au_sync_delay(100); | |
180 | return 0; | |
181 | } | |
182 | ||
183 | struct pcmcia_low_level xxs1500_pcmcia_ops = { | |
184 | xxs1500_pcmcia_init, | |
185 | xxs1500_pcmcia_shutdown, | |
186 | xxs1500_pcmcia_socket_state, | |
187 | xxs1500_pcmcia_get_irq_info, | |
188 | xxs1500_pcmcia_configure_socket | |
189 | }; |