1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
|
/*
*
* Alchemy Semi Db1x00 boards specific pcmcia routines.
*
* Copyright 2002 MontaVista Software Inc.
* Author: MontaVista Software, Inc.
* ppopov@mvista.com or source@mvista.com
*
* Copyright 2004 Pete Popov, updated the driver to 2.6.
* Followed the sa11xx API and largely copied many of the hardware
* independent functions.
*
* ########################################################################
*
* This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
*
* ########################################################################
*
*
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/interrupt.h>
#include <linux/device.h>
#include <linux/init.h>
#include <asm/irq.h>
#include <asm/signal.h>
#include <asm/mach-au1x00/au1000.h>
#if defined(CONFIG_MIPS_DB1200)
#include <db1200.h>
#elif defined(CONFIG_MIPS_PB1200)
#include <pb1200.h>
#else
#include <asm/mach-db1x00/db1x00.h>
static BCSR * const bcsr = (BCSR *)BCSR_KSEG1_ADDR;
#endif
#include "au1000_generic.h"
#if 0
#define debug(x,args...) printk(KERN_DEBUG "%s: " x, __func__ , ##args)
#else
#define debug(x,args...)
#endif
struct au1000_pcmcia_socket au1000_pcmcia_socket[PCMCIA_NUM_SOCKS];
extern int au1x00_pcmcia_socket_probe(struct device *, struct pcmcia_low_level *, int, int);
static int db1x00_pcmcia_hw_init(struct au1000_pcmcia_socket *skt)
{
#ifdef CONFIG_MIPS_DB1550
skt->irq = skt->nr ? AU1000_GPIO_5 : AU1000_GPIO_3;
#elif defined(CONFIG_MIPS_DB1200) || defined(CONFIG_MIPS_PB1200)
skt->irq = skt->nr ? BOARD_PC1_INT : BOARD_PC0_INT;
#else
skt->irq = skt->nr ? AU1000_GPIO_5 : AU1000_GPIO_2;
#endif
return 0;
}
static void db1x00_pcmcia_shutdown(struct au1000_pcmcia_socket *skt)
{
bcsr->pcmcia = 0; /* turn off power */
au_sync_delay(2);
}
static void
db1x00_pcmcia_socket_state(struct au1000_pcmcia_socket *skt, struct pcmcia_state *state)
{
u32 inserted;
unsigned char vs;
state->ready = 0;
state->vs_Xv = 0;
state->vs_3v = 0;
state->detect = 0;
switch (skt->nr) {
case 0:
vs = bcsr->status & 0x3;
#if defined(CONFIG_MIPS_DB1200) || defined(CONFIG_MIPS_PB1200)
inserted = BOARD_CARD_INSERTED(0);
#else
inserted = !(bcsr->status & (1<<4));
#endif
break;
case 1:
vs = (bcsr->status & 0xC)>>2;
#if defined(CONFIG_MIPS_DB1200) || defined(CONFIG_MIPS_PB1200)
inserted = BOARD_CARD_INSERTED(1);
#else
inserted = !(bcsr->status & (1<<5));
#endif
break;
default:/* should never happen */
return;
}
if (inserted)
debug("db1x00 socket %d: inserted %d, vs %d pcmcia %x\n",
skt->nr, inserted, vs, bcsr->pcmcia);
if (inserted) {
switch (vs) {
case 0:
case 2:
state->vs_3v=1;
break;
case 3: /* 5V */
break;
default:
/* return without setting 'detect' */
printk(KERN_ERR "db1x00 bad VS (%d)\n",
vs);
}
state->detect = 1;
state->ready = 1;
}
else {
/* if the card was previously inserted and then ejected,
* we should turn off power to it
*/
if ((skt->nr == 0) && (bcsr->pcmcia & BCSR_PCMCIA_PC0RST)) {
bcsr->pcmcia &= ~(BCSR_PCMCIA_PC0RST |
BCSR_PCMCIA_PC0DRVEN |
BCSR_PCMCIA_PC0VPP |
BCSR_PCMCIA_PC0VCC);
au_sync_delay(10);
}
else if ((skt->nr == 1) && bcsr->pcmcia & BCSR_PCMCIA_PC1RST) {
bcsr->pcmcia &= ~(BCSR_PCMCIA_PC1RST |
BCSR_PCMCIA_PC1DRVEN |
BCSR_PCMCIA_PC1VPP |
BCSR_PCMCIA_PC1VCC);
au_sync_delay(10);
}
}
state->bvd1=1;
state->bvd2=1;
state->wrprot=0;
}
static int
db1x00_pcmcia_configure_socket(struct au1000_pcmcia_socket *skt, struct socket_state_t *state)
{
u16 pwr;
int sock = skt->nr;
debug("config_skt %d Vcc %dV Vpp %dV, reset %d\n",
sock, state->Vcc, state->Vpp,
state->flags & SS_RESET);
/* pcmcia reg was set to zero at init time. Be careful when
* initializing a socket not to wipe out the settings of the
* other socket.
*/
pwr = bcsr->pcmcia;
pwr &= ~(0xf << sock*8); /* clear voltage settings */
state->Vpp = 0;
switch(state->Vcc){
case 0: /* Vcc 0 */
pwr |= SET_VCC_VPP(0,0,sock);
break;
case 50: /* Vcc 5V */
switch(state->Vpp) {
case 0:
pwr |= SET_VCC_VPP(2,0,sock);
break;
case 50:
pwr |= SET_VCC_VPP(2,1,sock);
break;
case 12:
pwr |= SET_VCC_VPP(2,2,sock);
break;
case 33:
default:
pwr |= SET_VCC_VPP(0,0,sock);
printk("%s: bad Vcc/Vpp (%d:%d)\n",
__func__,
state->Vcc,
state->Vpp);
break;
}
break;
case 33: /* Vcc 3.3V */
switch(state->Vpp) {
case 0:
pwr |= SET_VCC_VPP(1,0,sock);
break;
case 12:
pwr |= SET_VCC_VPP(1,2,sock);
break;
case 33:
pwr |= SET_VCC_VPP(1,1,sock);
break;
case 50:
default:
pwr |= SET_VCC_VPP(0,0,sock);
printk("%s: bad Vcc/Vpp (%d:%d)\n",
__func__,
state->Vcc,
state->Vpp);
break;
}
break;
default: /* what's this ? */
pwr |= SET_VCC_VPP(0,0,sock);
printk(KERN_ERR "%s: bad Vcc %d\n",
__func__, state->Vcc);
break;
}
bcsr->pcmcia = pwr;
au_sync_delay(300);
if (sock == 0) {
if (!(state->flags & SS_RESET)) {
pwr |= BCSR_PCMCIA_PC0DRVEN;
bcsr->pcmcia = pwr;
au_sync_delay(300);
pwr |= BCSR_PCMCIA_PC0RST;
bcsr->pcmcia = pwr;
au_sync_delay(100);
}
else {
pwr &= ~(BCSR_PCMCIA_PC0RST | BCSR_PCMCIA_PC0DRVEN);
bcsr->pcmcia = pwr;
au_sync_delay(100);
}
}
else {
if (!(state->flags & SS_RESET)) {
pwr |= BCSR_PCMCIA_PC1DRVEN;
bcsr->pcmcia = pwr;
au_sync_delay(300);
pwr |= BCSR_PCMCIA_PC1RST;
bcsr->pcmcia = pwr;
au_sync_delay(100);
}
else {
pwr &= ~(BCSR_PCMCIA_PC1RST | BCSR_PCMCIA_PC1DRVEN);
bcsr->pcmcia = pwr;
au_sync_delay(100);
}
}
return 0;
}
/*
* Enable card status IRQs on (re-)initialisation. This can
* be called at initialisation, power management event, or
* pcmcia event.
*/
void db1x00_socket_init(struct au1000_pcmcia_socket *skt)
{
/* nothing to do for now */
}
/*
* Disable card status IRQs and PCMCIA bus on suspend.
*/
void db1x00_socket_suspend(struct au1000_pcmcia_socket *skt)
{
/* nothing to do for now */
}
struct pcmcia_low_level db1x00_pcmcia_ops = {
.owner = THIS_MODULE,
.hw_init = db1x00_pcmcia_hw_init,
.hw_shutdown = db1x00_pcmcia_shutdown,
.socket_state = db1x00_pcmcia_socket_state,
.configure_socket = db1x00_pcmcia_configure_socket,
.socket_init = db1x00_socket_init,
.socket_suspend = db1x00_socket_suspend
};
int au1x_board_init(struct device *dev)
{
int ret = -ENODEV;
bcsr->pcmcia = 0; /* turn off power, if it's not already off */
au_sync_delay(2);
ret = au1x00_pcmcia_socket_probe(dev, &db1x00_pcmcia_ops, 0, 2);
return ret;
}
|
