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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [pcmcia/] [au1000_pb1x00.c] - Blame information for rev 1774

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Line No. Rev Author Line
1 1275 phoenix
/*
2
 *
3
 * Alchemy Semi Pb1x00 boards specific pcmcia routines.
4
 *
5
 * Copyright 2002 MontaVista Software Inc.
6
 * Author: 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
#include <linux/module.h>
25
#include <linux/init.h>
26
#include <linux/delay.h>
27
#include <linux/ioport.h>
28
#include <linux/kernel.h>
29
#include <linux/tqueue.h>
30
#include <linux/timer.h>
31
#include <linux/mm.h>
32
#include <linux/proc_fs.h>
33
#include <linux/version.h>
34
#include <linux/types.h>
35
 
36
#include <pcmcia/version.h>
37
#include <pcmcia/cs_types.h>
38
#include <pcmcia/cs.h>
39
#include <pcmcia/ss.h>
40
#include <pcmcia/bulkmem.h>
41
#include <pcmcia/cistpl.h>
42
#include <pcmcia/bus_ops.h>
43
#include "cs_internal.h"
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>
51
 
52
#ifdef CONFIG_MIPS_PB1000
53
#include <asm/pb1000.h>
54
#define PCMCIA_IRQ AU1000_GPIO_15
55
#elif defined (CONFIG_MIPS_PB1500)
56
#include <asm/pb1500.h>
57
#define PCMCIA_IRQ AU1500_GPIO_203
58
#elif defined (CONFIG_MIPS_PB1100)
59
#include <asm/pb1100.h>
60
#define PCMCIA_IRQ AU1000_GPIO_11
61
#endif
62
 
63
static int pb1x00_pcmcia_init(struct pcmcia_init *init)
64
{
65
#ifdef CONFIG_MIPS_PB1000
66
        u16 pcr;
67
        pcr = PCR_SLOT_0_RST | PCR_SLOT_1_RST;
68
 
69
        au_writel(0x8000, PB1000_MDR); /* clear pcmcia interrupt */
70
        au_sync_delay(100);
71
        au_writel(0x4000, PB1000_MDR); /* enable pcmcia interrupt */
72
        au_sync();
73
 
74
        pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,0);
75
        pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,1);
76
        au_writel(pcr, PB1000_PCR);
77
        au_sync_delay(20);
78
 
79
        return PCMCIA_NUM_SOCKS;
80
 
81
#else /* fixme -- take care of the Pb1500 at some point */
82
 
83
        u16 pcr;
84
        pcr = au_readw(PCMCIA_BOARD_REG) & ~0xf; /* turn off power */
85
        pcr &= ~(PC_DEASSERT_RST | PC_DRV_EN);
86
        au_writew(pcr, PCMCIA_BOARD_REG);
87
        au_sync_delay(500);
88
        return PCMCIA_NUM_SOCKS;
89
#endif
90
}
91
 
92
static int pb1x00_pcmcia_shutdown(void)
93
{
94
#ifdef CONFIG_MIPS_PB1000
95
        u16 pcr;
96
        pcr = PCR_SLOT_0_RST | PCR_SLOT_1_RST;
97
        pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,0);
98
        pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,1);
99
        au_writel(pcr, PB1000_PCR);
100
        au_sync_delay(20);
101
        return 0;
102
#else
103
        u16 pcr;
104
        pcr = au_readw(PCMCIA_BOARD_REG) & ~0xf; /* turn off power */
105
        pcr &= ~(PC_DEASSERT_RST | PC_DRV_EN);
106
        au_writew(pcr, PCMCIA_BOARD_REG);
107
        au_sync_delay(2);
108
        return 0;
109
#endif
110
}
111
 
112
static int
113
pb1x00_pcmcia_socket_state(unsigned sock, struct pcmcia_state *state)
114
{
115
        u32 inserted0, inserted1;
116
        u16 vs0, vs1;
117
 
118
#ifdef CONFIG_MIPS_PB1000
119
        vs0 = vs1 = (u16)au_readl(PB1000_ACR1);
120
        inserted0 = !(vs0 & (ACR1_SLOT_0_CD1 | ACR1_SLOT_0_CD2));
121
        inserted1 = !(vs1 & (ACR1_SLOT_1_CD1 | ACR1_SLOT_1_CD2));
122
        vs0 = (vs0 >> 4) & 0x3;
123
        vs1 = (vs1 >> 12) & 0x3;
124
#else
125
        vs0 = (au_readw(BOARD_STATUS_REG) >> 4) & 0x3;
126
#ifdef CONFIG_MIPS_PB1500
127
        inserted0 = !((au_readl(GPIO2_PINSTATE) >> 1) & 0x1); /* gpio 201 */
128
#else /* Pb1100 */
129
        inserted0 = !((au_readl(SYS_PINSTATERD) >> 9) & 0x1); /* gpio 9 */
130
#endif
131
        inserted1 = 0;
132
#endif
133
 
134
        state->ready = 0;
135
        state->vs_Xv = 0;
136
        state->vs_3v = 0;
137
        state->detect = 0;
138
 
139
        if (sock == 0) {
140
                if (inserted0) {
141
                        switch (vs0) {
142
                                case 0:
143
                                case 2:
144
                                        state->vs_3v=1;
145
                                        break;
146
                                case 3: /* 5V */
147
                                        break;
148
                                default:
149
                                        /* return without setting 'detect' */
150
                                        printk(KERN_ERR "pb1x00 bad VS (%d)\n",
151
                                                        vs0);
152
                                        return 0;
153
                        }
154
                        state->detect = 1;
155
                }
156
        }
157
        else  {
158
                if (inserted1) {
159
                        switch (vs1) {
160
                                case 0:
161
                                case 2:
162
                                        state->vs_3v=1;
163
                                        break;
164
                                case 3: /* 5V */
165
                                        break;
166
                                default:
167
                                        /* return without setting 'detect' */
168
                                        printk(KERN_ERR "pb1x00 bad VS (%d)\n",
169
                                                        vs1);
170
                                        return 0;
171
                        }
172
                        state->detect = 1;
173
                }
174
        }
175
 
176
        if (state->detect) {
177
                state->ready = 1;
178
        }
179
 
180
        state->bvd1=1;
181
        state->bvd2=1;
182
        state->wrprot=0;
183
        return 1;
184
}
185
 
186
 
187
static int pb1x00_pcmcia_get_irq_info(struct pcmcia_irq_info *info)
188
{
189
 
190
        if(info->sock > PCMCIA_MAX_SOCK) return -1;
191
 
192
        /*
193
         * Even in the case of the Pb1000, both sockets are connected
194
         * to the same irq line.
195
         */
196
        info->irq = PCMCIA_IRQ;
197
 
198
        return 0;
199
}
200
 
201
 
202
static int
203
pb1x00_pcmcia_configure_socket(const struct pcmcia_configure *configure)
204
{
205
        u16 pcr;
206
 
207
        if(configure->sock > PCMCIA_MAX_SOCK) return -1;
208
 
209
#ifdef CONFIG_MIPS_PB1000
210
        pcr = au_readl(PB1000_PCR);
211
 
212
        if (configure->sock == 0) {
213
                pcr &= ~(PCR_SLOT_0_VCC0 | PCR_SLOT_0_VCC1 |
214
                                PCR_SLOT_0_VPP0 | PCR_SLOT_0_VPP1);
215
        }
216
        else  {
217
                pcr &= ~(PCR_SLOT_1_VCC0 | PCR_SLOT_1_VCC1 |
218
                                PCR_SLOT_1_VPP0 | PCR_SLOT_1_VPP1);
219
        }
220
 
221
        pcr &= ~PCR_SLOT_0_RST;
222
        DEBUG(KERN_INFO "Vcc %dV Vpp %dV, pcr %x\n",
223
                        configure->vcc, configure->vpp, pcr);
224
        switch(configure->vcc){
225
                case 0:  /* Vcc 0 */
226
                        switch(configure->vpp) {
227
                                case 0:
228
                                        pcr |= SET_VCC_VPP(VCC_HIZ,VPP_GND,
229
                                                        configure->sock);
230
                                        break;
231
                                case 12:
232
                                        pcr |= SET_VCC_VPP(VCC_HIZ,VPP_12V,
233
                                                        configure->sock);
234
                                        break;
235
                                case 50:
236
                                        pcr |= SET_VCC_VPP(VCC_HIZ,VPP_5V,
237
                                                        configure->sock);
238
                                        break;
239
                                case 33:
240
                                        pcr |= SET_VCC_VPP(VCC_HIZ,VPP_3V,
241
                                                        configure->sock);
242
                                        break;
243
                                default:
244
                                        pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,
245
                                                        configure->sock);
246
                                        printk("%s: bad Vcc/Vpp (%d:%d)\n",
247
                                                        __FUNCTION__,
248
                                                        configure->vcc,
249
                                                        configure->vpp);
250
                                        break;
251
                        }
252
                        break;
253
                case 50: /* Vcc 5V */
254
                        switch(configure->vpp) {
255
                                case 0:
256
                                        pcr |= SET_VCC_VPP(VCC_5V,VPP_GND,
257
                                                        configure->sock);
258
                                        break;
259
                                case 50:
260
                                        pcr |= SET_VCC_VPP(VCC_5V,VPP_5V,
261
                                                        configure->sock);
262
                                        break;
263
                                case 12:
264
                                        pcr |= SET_VCC_VPP(VCC_5V,VPP_12V,
265
                                                        configure->sock);
266
                                        break;
267
                                case 33:
268
                                        pcr |= SET_VCC_VPP(VCC_5V,VPP_3V,
269
                                                        configure->sock);
270
                                        break;
271
                                default:
272
                                        pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,
273
                                                        configure->sock);
274
                                        printk("%s: bad Vcc/Vpp (%d:%d)\n",
275
                                                        __FUNCTION__,
276
                                                        configure->vcc,
277
                                                        configure->vpp);
278
                                        break;
279
                        }
280
                        break;
281
                case 33: /* Vcc 3.3V */
282
                        switch(configure->vpp) {
283
                                case 0:
284
                                        pcr |= SET_VCC_VPP(VCC_3V,VPP_GND,
285
                                                        configure->sock);
286
                                        break;
287
                                case 50:
288
                                        pcr |= SET_VCC_VPP(VCC_3V,VPP_5V,
289
                                                        configure->sock);
290
                                        break;
291
                                case 12:
292
                                        pcr |= SET_VCC_VPP(VCC_3V,VPP_12V,
293
                                                        configure->sock);
294
                                        break;
295
                                case 33:
296
                                        pcr |= SET_VCC_VPP(VCC_3V,VPP_3V,
297
                                                        configure->sock);
298
                                        break;
299
                                default:
300
                                        pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,
301
                                                        configure->sock);
302
                                        printk("%s: bad Vcc/Vpp (%d:%d)\n",
303
                                                        __FUNCTION__,
304
                                                        configure->vcc,
305
                                                        configure->vpp);
306
                                        break;
307
                        }
308
                        break;
309
                default: /* what's this ? */
310
                        pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,configure->sock);
311
                        printk(KERN_ERR "%s: bad Vcc %d\n",
312
                                        __FUNCTION__, configure->vcc);
313
                        break;
314
        }
315
 
316
        if (configure->sock == 0) {
317
        pcr &= ~(PCR_SLOT_0_RST);
318
                if (configure->reset)
319
                pcr |= PCR_SLOT_0_RST;
320
        }
321
        else {
322
                pcr &= ~(PCR_SLOT_1_RST);
323
                if (configure->reset)
324
                        pcr |= PCR_SLOT_1_RST;
325
        }
326
        au_writel(pcr, PB1000_PCR);
327
        au_sync_delay(300);
328
 
329
#else
330
 
331
        pcr = au_readw(PCMCIA_BOARD_REG) & ~0xf;
332
 
333
        DEBUG(KERN_INFO "Vcc %dV Vpp %dV, pcr %x, reset %d\n",
334
                        configure->vcc, configure->vpp, pcr, configure->reset);
335
 
336
 
337
        switch(configure->vcc){
338
                case 0:  /* Vcc 0 */
339
                        pcr |= SET_VCC_VPP(0,0);
340
                        break;
341
                case 50: /* Vcc 5V */
342
                        switch(configure->vpp) {
343
                                case 0:
344
                                        pcr |= SET_VCC_VPP(2,0);
345
                                        break;
346
                                case 50:
347
                                        pcr |= SET_VCC_VPP(2,1);
348
                                        break;
349
                                case 12:
350
                                        pcr |= SET_VCC_VPP(2,2);
351
                                        break;
352
                                case 33:
353
                                default:
354
                                        pcr |= SET_VCC_VPP(0,0);
355
                                        printk("%s: bad Vcc/Vpp (%d:%d)\n",
356
                                                        __FUNCTION__,
357
                                                        configure->vcc,
358
                                                        configure->vpp);
359
                                        break;
360
                        }
361
                        break;
362
                case 33: /* Vcc 3.3V */
363
                        switch(configure->vpp) {
364
                                case 0:
365
                                        pcr |= SET_VCC_VPP(1,0);
366
                                        break;
367
                                case 12:
368
                                        pcr |= SET_VCC_VPP(1,2);
369
                                        break;
370
                                case 33:
371
                                        pcr |= SET_VCC_VPP(1,1);
372
                                        break;
373
                                case 50:
374
                                default:
375
                                        pcr |= SET_VCC_VPP(0,0);
376
                                        printk("%s: bad Vcc/Vpp (%d:%d)\n",
377
                                                        __FUNCTION__,
378
                                                        configure->vcc,
379
                                                        configure->vpp);
380
                                        break;
381
                        }
382
                        break;
383
                default: /* what's this ? */
384
                        pcr |= SET_VCC_VPP(0,0);
385
                        printk(KERN_ERR "%s: bad Vcc %d\n",
386
                                        __FUNCTION__, configure->vcc);
387
                        break;
388
        }
389
 
390
        au_writew(pcr, PCMCIA_BOARD_REG);
391
        au_sync_delay(300);
392
 
393
        if (!configure->reset) {
394
                pcr |= PC_DRV_EN;
395
                au_writew(pcr, PCMCIA_BOARD_REG);
396
                au_sync_delay(100);
397
                pcr |= PC_DEASSERT_RST;
398
                au_writew(pcr, PCMCIA_BOARD_REG);
399
                au_sync_delay(100);
400
        }
401
        else {
402
                pcr &= ~(PC_DEASSERT_RST | PC_DRV_EN);
403
                au_writew(pcr, PCMCIA_BOARD_REG);
404
                au_sync_delay(100);
405
        }
406
#endif
407
        return 0;
408
}
409
 
410
 
411
struct pcmcia_low_level pb1x00_pcmcia_ops = {
412
        pb1x00_pcmcia_init,
413
        pb1x00_pcmcia_shutdown,
414
        pb1x00_pcmcia_socket_state,
415
        pb1x00_pcmcia_get_irq_info,
416
        pb1x00_pcmcia_configure_socket
417
};

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