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[PATCH] inotify delete race fix
[linux-2.6/mini2440.git] / drivers / pcmcia / vrc4171_card.c
blob17bb2da6752bc08f0eeeaffa074490f4211c4d5c
1 /*
2 * vrc4171_card.c, NEC VRC4171 Card Controller driver for Socket Services.
3 *
4 * Copyright (C) 2003-2005 Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20 #include <linux/init.h>
21 #include <linux/ioport.h>
22 #include <linux/interrupt.h>
23 #include <linux/module.h>
24 #include <linux/spinlock.h>
25 #include <linux/sched.h>
26 #include <linux/types.h>
27
28 #include <asm/io.h>
29
30 #include <pcmcia/ss.h>
31
32 #include "i82365.h"
33
34 MODULE_DESCRIPTION("NEC VRC4171 Card Controllers driver for Socket Services");
35 MODULE_AUTHOR("Yoichi Yuasa <yuasa@hh.iij4u.or.jp>");
36 MODULE_LICENSE("GPL");
37
38 #define CARD_MAX_SLOTS 2
39 #define CARD_SLOTA 0
40 #define CARD_SLOTB 1
41 #define CARD_SLOTB_OFFSET 0x40
42
43 #define CARD_MEM_START 0x10000000
44 #define CARD_MEM_END 0x13ffffff
45 #define CARD_MAX_MEM_OFFSET 0x3ffffff
46 #define CARD_MAX_MEM_SPEED 1000
47
48 #define CARD_CONTROLLER_INDEX 0x03e0
49 #define CARD_CONTROLLER_DATA 0x03e1
50 /* Power register */
51 #define VPP_GET_VCC 0x01
52 #define POWER_ENABLE 0x10
53 #define CARD_VOLTAGE_SENSE 0x1f
54 #define VCC_3VORXV_CAPABLE 0x00
55 #define VCC_XV_ONLY 0x01
56 #define VCC_3V_CAPABLE 0x02
57 #define VCC_5V_ONLY 0x03
58 #define CARD_VOLTAGE_SELECT 0x2f
59 #define VCC_3V 0x01
60 #define VCC_5V 0x00
61 #define VCC_XV 0x02
62 #define VCC_STATUS_3V 0x02
63 #define VCC_STATUS_5V 0x01
64 #define VCC_STATUS_XV 0x03
65 #define GLOBAL_CONTROL 0x1e
66 #define EXWRBK 0x04
67 #define IRQPM_EN 0x08
68 #define CLRPMIRQ 0x10
69
70 #define INTERRUPT_STATUS 0x05fa
71 #define IRQ_A 0x02
72 #define IRQ_B 0x04
73
74 #define CONFIGURATION1 0x05fe
75 #define SLOTB_CONFIG 0xc000
76 #define SLOTB_NONE 0x0000
77 #define SLOTB_PCCARD 0x4000
78 #define SLOTB_CF 0x8000
79 #define SLOTB_FLASHROM 0xc000
80
81 #define CARD_CONTROLLER_START CARD_CONTROLLER_INDEX
82 #define CARD_CONTROLLER_END CARD_CONTROLLER_DATA
83
84 #define IO_MAX_MAPS 2
85 #define MEM_MAX_MAPS 5
86
87 typedef enum {
88 SLOT_PROBE = 0,
89 SLOT_NOPROBE_IO,
90 SLOT_NOPROBE_MEM,
91 SLOT_NOPROBE_ALL,
92 SLOT_INITIALIZED,
93 } vrc4171_slot_t;
94
95 typedef enum {
96 SLOTB_IS_NONE,
97 SLOTB_IS_PCCARD,
98 SLOTB_IS_CF,
99 SLOTB_IS_FLASHROM,
100 } vrc4171_slotb_t;
101
102 typedef struct vrc4171_socket {
103 vrc4171_slot_t slot;
104 struct pcmcia_socket pcmcia_socket;
105 char name[24];
106 int csc_irq;
107 int io_irq;
108 } vrc4171_socket_t;
109
110 static vrc4171_socket_t vrc4171_sockets[CARD_MAX_SLOTS];
111 static vrc4171_slotb_t vrc4171_slotb = SLOTB_IS_NONE;
112 static char vrc4171_card_name[] = "NEC VRC4171 Card Controller";
113 static unsigned int vrc4171_irq;
114 static uint16_t vrc4171_irq_mask = 0xdeb8;
115
116 static struct resource vrc4171_card_resource[3] = {
117 { .name = vrc4171_card_name,
118 .start = CARD_CONTROLLER_START,
119 .end = CARD_CONTROLLER_END,
120 .flags = IORESOURCE_IO, },
121 { .name = vrc4171_card_name,
122 .start = INTERRUPT_STATUS,
123 .end = INTERRUPT_STATUS,
124 .flags = IORESOURCE_IO, },
125 { .name = vrc4171_card_name,
126 .start = CONFIGURATION1,
127 .end = CONFIGURATION1,
128 .flags = IORESOURCE_IO, },
129 };
130
131 static struct platform_device vrc4171_card_device = {
132 .name = vrc4171_card_name,
133 .id = 0,
134 .num_resources = 3,
135 .resource = vrc4171_card_resource,
136 };
137
138 static inline uint16_t vrc4171_get_irq_status(void)
139 {
140 return inw(INTERRUPT_STATUS);
141 }
142
143 static inline void vrc4171_set_multifunction_pin(vrc4171_slotb_t config)
144 {
145 uint16_t config1;
146
147 config1 = inw(CONFIGURATION1);
148 config1 &= ~SLOTB_CONFIG;
149
150 switch (config) {
151 case SLOTB_IS_NONE:
152 config1 |= SLOTB_NONE;
153 break;
154 case SLOTB_IS_PCCARD:
155 config1 |= SLOTB_PCCARD;
156 break;
157 case SLOTB_IS_CF:
158 config1 |= SLOTB_CF;
159 break;
160 case SLOTB_IS_FLASHROM:
161 config1 |= SLOTB_FLASHROM;
162 break;
163 default:
164 break;
165 }
166
167 outw(config1, CONFIGURATION1);
168 }
169
170 static inline uint8_t exca_read_byte(int slot, uint8_t index)
171 {
172 if (slot == CARD_SLOTB)
173 index += CARD_SLOTB_OFFSET;
174
175 outb(index, CARD_CONTROLLER_INDEX);
176 return inb(CARD_CONTROLLER_DATA);
177 }
178
179 static inline uint16_t exca_read_word(int slot, uint8_t index)
180 {
181 uint16_t data;
182
183 if (slot == CARD_SLOTB)
184 index += CARD_SLOTB_OFFSET;
185
186 outb(index++, CARD_CONTROLLER_INDEX);
187 data = inb(CARD_CONTROLLER_DATA);
188
189 outb(index, CARD_CONTROLLER_INDEX);
190 data |= ((uint16_t)inb(CARD_CONTROLLER_DATA)) << 8;
191
192 return data;
193 }
194
195 static inline uint8_t exca_write_byte(int slot, uint8_t index, uint8_t data)
196 {
197 if (slot == CARD_SLOTB)
198 index += CARD_SLOTB_OFFSET;
199
200 outb(index, CARD_CONTROLLER_INDEX);
201 outb(data, CARD_CONTROLLER_DATA);
202
203 return data;
204 }
205
206 static inline uint16_t exca_write_word(int slot, uint8_t index, uint16_t data)
207 {
208 if (slot == CARD_SLOTB)
209 index += CARD_SLOTB_OFFSET;
210
211 outb(index++, CARD_CONTROLLER_INDEX);
212 outb(data, CARD_CONTROLLER_DATA);
213
214 outb(index, CARD_CONTROLLER_INDEX);
215 outb((uint8_t)(data >> 8), CARD_CONTROLLER_DATA);
216
217 return data;
218 }
219
220 static inline int search_nonuse_irq(void)
221 {
222 int i;
223
224 for (i = 0; i < 16; i++) {
225 if (vrc4171_irq_mask & (1 << i)) {
226 vrc4171_irq_mask &= ~(1 << i);
227 return i;
228 }
229 }
230
231 return -1;
232 }
233
234 static int pccard_init(struct pcmcia_socket *sock)
235 {
236 vrc4171_socket_t *socket;
237 unsigned int slot;
238
239 sock->features |= SS_CAP_PCCARD | SS_CAP_PAGE_REGS;
240 sock->irq_mask = 0;
241 sock->map_size = 0x1000;
242 sock->pci_irq = vrc4171_irq;
243
244 slot = sock->sock;
245 socket = &vrc4171_sockets[slot];
246 socket->csc_irq = search_nonuse_irq();
247 socket->io_irq = search_nonuse_irq();
248
249 return 0;
250 }
251
252 static int pccard_get_status(struct pcmcia_socket *sock, u_int *value)
253 {
254 unsigned int slot;
255 uint8_t status, sense;
256 u_int val = 0;
257
258 if (sock == NULL || sock->sock >= CARD_MAX_SLOTS || value == NULL)
259 return -EINVAL;
260
261 slot = sock->sock;
262
263 status = exca_read_byte(slot, I365_STATUS);
264 if (exca_read_byte(slot, I365_INTCTL) & I365_PC_IOCARD) {
265 if (status & I365_CS_STSCHG)
266 val |= SS_STSCHG;
267 } else {
268 if (!(status & I365_CS_BVD1))
269 val |= SS_BATDEAD;
270 else if ((status & (I365_CS_BVD1 | I365_CS_BVD2)) == I365_CS_BVD1)
271 val |= SS_BATWARN;
272 }
273 if ((status & I365_CS_DETECT) == I365_CS_DETECT)
274 val |= SS_DETECT;
275 if (status & I365_CS_WRPROT)
276 val |= SS_WRPROT;
277 if (status & I365_CS_READY)
278 val |= SS_READY;
279 if (status & I365_CS_POWERON)
280 val |= SS_POWERON;
281
282 sense = exca_read_byte(slot, CARD_VOLTAGE_SENSE);
283 switch (sense) {
284 case VCC_3VORXV_CAPABLE:
285 val |= SS_3VCARD | SS_XVCARD;
286 break;
287 case VCC_XV_ONLY:
288 val |= SS_XVCARD;
289 break;
290 case VCC_3V_CAPABLE:
291 val |= SS_3VCARD;
292 break;
293 default:
294 /* 5V only */
295 break;
296 }
297
298 *value = val;
299
300 return 0;
301 }
302
303 static inline u_char get_Vcc_value(uint8_t voltage)
304 {
305 switch (voltage) {
306 case VCC_STATUS_3V:
307 return 33;
308 case VCC_STATUS_5V:
309 return 50;
310 default:
311 break;
312 }
313
314 return 0;
315 }
316
317 static inline u_char get_Vpp_value(uint8_t power, u_char Vcc)
318 {
319 if ((power & 0x03) == 0x01 || (power & 0x03) == 0x02)
320 return Vcc;
321
322 return 0;
323 }
324
325 static int pccard_get_socket(struct pcmcia_socket *sock, socket_state_t *state)
326 {
327 unsigned int slot;
328 uint8_t power, voltage, control, cscint;
329
330 if (sock == NULL || sock->sock >= CARD_MAX_SLOTS || state == NULL)
331 return -EINVAL;
332
333 slot = sock->sock;
334
335 power = exca_read_byte(slot, I365_POWER);
336 voltage = exca_read_byte(slot, CARD_VOLTAGE_SELECT);
337
338 state->Vcc = get_Vcc_value(voltage);
339 state->Vpp = get_Vpp_value(power, state->Vcc);
340
341 state->flags = 0;
342 if (power & POWER_ENABLE)
343 state->flags |= SS_PWR_AUTO;
344 if (power & I365_PWR_OUT)
345 state->flags |= SS_OUTPUT_ENA;
346
347 control = exca_read_byte(slot, I365_INTCTL);
348 if (control & I365_PC_IOCARD)
349 state->flags |= SS_IOCARD;
350 if (!(control & I365_PC_RESET))
351 state->flags |= SS_RESET;
352
353 cscint = exca_read_byte(slot, I365_CSCINT);
354 state->csc_mask = 0;
355 if (state->flags & SS_IOCARD) {
356 if (cscint & I365_CSC_STSCHG)
357 state->flags |= SS_STSCHG;
358 } else {
359 if (cscint & I365_CSC_BVD1)
360 state->csc_mask |= SS_BATDEAD;
361 if (cscint & I365_CSC_BVD2)
362 state->csc_mask |= SS_BATWARN;
363 }
364 if (cscint & I365_CSC_READY)
365 state->csc_mask |= SS_READY;
366 if (cscint & I365_CSC_DETECT)
367 state->csc_mask |= SS_DETECT;
368
369 return 0;
370 }
371
372 static inline uint8_t set_Vcc_value(u_char Vcc)
373 {
374 switch (Vcc) {
375 case 33:
376 return VCC_3V;
377 case 50:
378 return VCC_5V;
379 }
380
381 /* Small voltage is chosen for safety. */
382 return VCC_3V;
383 }
384
385 static int pccard_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
386 {
387 vrc4171_socket_t *socket;
388 unsigned int slot;
389 uint8_t voltage, power, control, cscint;
390
391 if (sock == NULL || sock->sock >= CARD_MAX_SLOTS ||
392 (state->Vpp != state->Vcc && state->Vpp != 0) ||
393 (state->Vcc != 50 && state->Vcc != 33 && state->Vcc != 0))
394 return -EINVAL;
395
396 slot = sock->sock;
397 socket = &vrc4171_sockets[slot];
398
399 spin_lock_irq(&sock->lock);
400
401 voltage = set_Vcc_value(state->Vcc);
402 exca_write_byte(slot, CARD_VOLTAGE_SELECT, voltage);
403
404 power = POWER_ENABLE;
405 if (state->Vpp == state->Vcc)
406 power |= VPP_GET_VCC;
407 if (state->flags & SS_OUTPUT_ENA)
408 power |= I365_PWR_OUT;
409 exca_write_byte(slot, I365_POWER, power);
410
411 control = 0;
412 if (state->io_irq != 0)
413 control |= socket->io_irq;
414 if (state->flags & SS_IOCARD)
415 control |= I365_PC_IOCARD;
416 if (state->flags & SS_RESET)
417 control &= ~I365_PC_RESET;
418 else
419 control |= I365_PC_RESET;
420 exca_write_byte(slot, I365_INTCTL, control);
421
422 cscint = 0;
423 exca_write_byte(slot, I365_CSCINT, cscint);
424 exca_read_byte(slot, I365_CSC); /* clear CardStatus change */
425 if (state->csc_mask != 0)
426 cscint |= socket->csc_irq << 8;
427 if (state->flags & SS_IOCARD) {
428 if (state->csc_mask & SS_STSCHG)
429 cscint |= I365_CSC_STSCHG;
430 } else {
431 if (state->csc_mask & SS_BATDEAD)
432 cscint |= I365_CSC_BVD1;
433 if (state->csc_mask & SS_BATWARN)
434 cscint |= I365_CSC_BVD2;
435 }
436 if (state->csc_mask & SS_READY)
437 cscint |= I365_CSC_READY;
438 if (state->csc_mask & SS_DETECT)
439 cscint |= I365_CSC_DETECT;
440 exca_write_byte(slot, I365_CSCINT, cscint);
441
442 spin_unlock_irq(&sock->lock);
443
444 return 0;
445 }
446
447 static int pccard_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io)
448 {
449 unsigned int slot;
450 uint8_t ioctl, addrwin;
451 u_char map;
452
453 if (sock == NULL || sock->sock >= CARD_MAX_SLOTS ||
454 io == NULL || io->map >= IO_MAX_MAPS ||
455 io->start > 0xffff || io->stop > 0xffff || io->start > io->stop)
456 return -EINVAL;
457
458 slot = sock->sock;
459 map = io->map;
460
461 addrwin = exca_read_byte(slot, I365_ADDRWIN);
462 if (addrwin & I365_ENA_IO(map)) {
463 addrwin &= ~I365_ENA_IO(map);
464 exca_write_byte(slot, I365_ADDRWIN, addrwin);
465 }
466
467 exca_write_word(slot, I365_IO(map)+I365_W_START, io->start);
468 exca_write_word(slot, I365_IO(map)+I365_W_STOP, io->stop);
469
470 ioctl = 0;
471 if (io->speed > 0)
472 ioctl |= I365_IOCTL_WAIT(map);
473 if (io->flags & MAP_16BIT)
474 ioctl |= I365_IOCTL_16BIT(map);
475 if (io->flags & MAP_AUTOSZ)
476 ioctl |= I365_IOCTL_IOCS16(map);
477 if (io->flags & MAP_0WS)
478 ioctl |= I365_IOCTL_0WS(map);
479 exca_write_byte(slot, I365_IOCTL, ioctl);
480
481 if (io->flags & MAP_ACTIVE) {
482 addrwin |= I365_ENA_IO(map);
483 exca_write_byte(slot, I365_ADDRWIN, addrwin);
484 }
485
486 return 0;
487 }
488
489 static int pccard_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem)
490 {
491 unsigned int slot;
492 uint16_t start, stop, offset;
493 uint8_t addrwin;
494 u_char map;
495
496 if (sock == NULL || sock->sock >= CARD_MAX_SLOTS ||
497 mem == NULL || mem->map >= MEM_MAX_MAPS ||
498 mem->res->start < CARD_MEM_START || mem->res->start > CARD_MEM_END ||
499 mem->res->end < CARD_MEM_START || mem->res->end > CARD_MEM_END ||
500 mem->res->start > mem->res->end ||
501 mem->card_start > CARD_MAX_MEM_OFFSET ||
502 mem->speed > CARD_MAX_MEM_SPEED)
503 return -EINVAL;
504
505 slot = sock->sock;
506 map = mem->map;
507
508 addrwin = exca_read_byte(slot, I365_ADDRWIN);
509 if (addrwin & I365_ENA_MEM(map)) {
510 addrwin &= ~I365_ENA_MEM(map);
511 exca_write_byte(slot, I365_ADDRWIN, addrwin);
512 }
513
514 start = (mem->res->start >> 12) & 0x3fff;
515 if (mem->flags & MAP_16BIT)
516 start |= I365_MEM_16BIT;
517 exca_write_word(slot, I365_MEM(map)+I365_W_START, start);
518
519 stop = (mem->res->end >> 12) & 0x3fff;
520 switch (mem->speed) {
521 case 0:
522 break;
523 case 1:
524 stop |= I365_MEM_WS0;
525 break;
526 case 2:
527 stop |= I365_MEM_WS1;
528 break;
529 default:
530 stop |= I365_MEM_WS0 | I365_MEM_WS1;
531 break;
532 }
533 exca_write_word(slot, I365_MEM(map)+I365_W_STOP, stop);
534
535 offset = (mem->card_start >> 12) & 0x3fff;
536 if (mem->flags & MAP_ATTRIB)
537 offset |= I365_MEM_REG;
538 if (mem->flags & MAP_WRPROT)
539 offset |= I365_MEM_WRPROT;
540 exca_write_word(slot, I365_MEM(map)+I365_W_OFF, offset);
541
542 if (mem->flags & MAP_ACTIVE) {
543 addrwin |= I365_ENA_MEM(map);
544 exca_write_byte(slot, I365_ADDRWIN, addrwin);
545 }
546
547 return 0;
548 }
549
550 static struct pccard_operations vrc4171_pccard_operations = {
551 .init = pccard_init,
552 .get_status = pccard_get_status,
553 .get_socket = pccard_get_socket,
554 .set_socket = pccard_set_socket,
555 .set_io_map = pccard_set_io_map,
556 .set_mem_map = pccard_set_mem_map,
557 };
558
559 static inline unsigned int get_events(int slot)
560 {
561 unsigned int events = 0;
562 uint8_t status, csc;
563
564 status = exca_read_byte(slot, I365_STATUS);
565 csc = exca_read_byte(slot, I365_CSC);
566
567 if (exca_read_byte(slot, I365_INTCTL) & I365_PC_IOCARD) {
568 if ((csc & I365_CSC_STSCHG) && (status & I365_CS_STSCHG))
569 events |= SS_STSCHG;
570 } else {
571 if (csc & (I365_CSC_BVD1 | I365_CSC_BVD2)) {
572 if (!(status & I365_CS_BVD1))
573 events |= SS_BATDEAD;
574 else if ((status & (I365_CS_BVD1 | I365_CS_BVD2)) == I365_CS_BVD1)
575 events |= SS_BATWARN;
576 }
577 }
578 if ((csc & I365_CSC_READY) && (status & I365_CS_READY))
579 events |= SS_READY;
580 if ((csc & I365_CSC_DETECT) && ((status & I365_CS_DETECT) == I365_CS_DETECT))
581 events |= SS_DETECT;
582
583 return events;
584 }
585
586 static irqreturn_t pccard_interrupt(int irq, void *dev_id, struct pt_regs *regs)
587 {
588 vrc4171_socket_t *socket;
589 unsigned int events;
590 irqreturn_t retval = IRQ_NONE;
591 uint16_t status;
592
593 status = vrc4171_get_irq_status();
594 if (status & IRQ_A) {
595 socket = &vrc4171_sockets[CARD_SLOTA];
596 if (socket->slot == SLOT_INITIALIZED) {
597 if (status & (1 << socket->csc_irq)) {
598 events = get_events(CARD_SLOTA);
599 if (events != 0) {
600 pcmcia_parse_events(&socket->pcmcia_socket, events);
601 retval = IRQ_HANDLED;
602 }
603 }
604 }
605 }
606
607 if (status & IRQ_B) {
608 socket = &vrc4171_sockets[CARD_SLOTB];
609 if (socket->slot == SLOT_INITIALIZED) {
610 if (status & (1 << socket->csc_irq)) {
611 events = get_events(CARD_SLOTB);
612 if (events != 0) {
613 pcmcia_parse_events(&socket->pcmcia_socket, events);
614 retval = IRQ_HANDLED;
615 }
616 }
617 }
618 }
619
620 return retval;
621 }
622
623 static inline void reserve_using_irq(int slot)
624 {
625 unsigned int irq;
626
627 irq = exca_read_byte(slot, I365_INTCTL);
628 irq &= 0x0f;
629 vrc4171_irq_mask &= ~(1 << irq);
630
631 irq = exca_read_byte(slot, I365_CSCINT);
632 irq = (irq & 0xf0) >> 4;
633 vrc4171_irq_mask &= ~(1 << irq);
634 }
635
636 static int __devinit vrc4171_add_sockets(void)
637 {
638 vrc4171_socket_t *socket;
639 int slot, retval;
640
641 for (slot = 0; slot < CARD_MAX_SLOTS; slot++) {
642 if (slot == CARD_SLOTB && vrc4171_slotb == SLOTB_IS_NONE)
643 continue;
644
645 socket = &vrc4171_sockets[slot];
646 if (socket->slot != SLOT_PROBE) {
647 uint8_t addrwin;
648
649 switch (socket->slot) {
650 case SLOT_NOPROBE_MEM:
651 addrwin = exca_read_byte(slot, I365_ADDRWIN);
652 addrwin &= 0x1f;
653 exca_write_byte(slot, I365_ADDRWIN, addrwin);
654 break;
655 case SLOT_NOPROBE_IO:
656 addrwin = exca_read_byte(slot, I365_ADDRWIN);
657 addrwin &= 0xc0;
658 exca_write_byte(slot, I365_ADDRWIN, addrwin);
659 break;
660 default:
661 break;
662 }
663
664 reserve_using_irq(slot);
665 continue;
666 }
667
668 sprintf(socket->name, "NEC VRC4171 Card Slot %1c", 'A' + slot);
669 socket->pcmcia_socket.dev.dev = &vrc4171_card_device.dev;
670 socket->pcmcia_socket.ops = &vrc4171_pccard_operations;
671 socket->pcmcia_socket.owner = THIS_MODULE;
672
673 retval = pcmcia_register_socket(&socket->pcmcia_socket);
674 if (retval < 0)
675 return retval;
676
677 exca_write_byte(slot, I365_ADDRWIN, 0);
678 exca_write_byte(slot, GLOBAL_CONTROL, 0);
679
680 socket->slot = SLOT_INITIALIZED;
681 }
682
683 return 0;
684 }
685
686 static void vrc4171_remove_sockets(void)
687 {
688 vrc4171_socket_t *socket;
689 int slot;
690
691 for (slot = 0; slot < CARD_MAX_SLOTS; slot++) {
692 if (slot == CARD_SLOTB && vrc4171_slotb == SLOTB_IS_NONE)
693 continue;
694
695 socket = &vrc4171_sockets[slot];
696 if (socket->slot == SLOT_INITIALIZED)
697 pcmcia_unregister_socket(&socket->pcmcia_socket);
698
699 socket->slot = SLOT_PROBE;
700 }
701 }
702
703 static int __devinit vrc4171_card_setup(char *options)
704 {
705 if (options == NULL || *options == '\0')
706 return 0;
707
708 if (strncmp(options, "irq:", 4) == 0) {
709 int irq;
710 options += 4;
711 irq = simple_strtoul(options, &options, 0);
712 if (irq >= 0 && irq < NR_IRQS)
713 vrc4171_irq = irq;
714
715 if (*options != ',')
716 return 0;
717 options++;
718 }
719
720 if (strncmp(options, "slota:", 6) == 0) {
721 options += 6;
722 if (*options != '\0') {
723 if (strncmp(options, "memnoprobe", 10) == 0) {
724 vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_MEM;
725 options += 10;
726 } else if (strncmp(options, "ionoprobe", 9) == 0) {
727 vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_IO;
728 options += 9;
729 } else if ( strncmp(options, "noprobe", 7) == 0) {
730 vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_ALL;
731 options += 7;
732 }
733
734 if (*options != ',')
735 return 0;
736 options++;
737 } else
738 return 0;
739
740 }
741
742 if (strncmp(options, "slotb:", 6) == 0) {
743 options += 6;
744 if (*options != '\0') {
745 if (strncmp(options, "pccard", 6) == 0) {
746 vrc4171_slotb = SLOTB_IS_PCCARD;
747 options += 6;
748 } else if (strncmp(options, "cf", 2) == 0) {
749 vrc4171_slotb = SLOTB_IS_CF;
750 options += 2;
751 } else if (strncmp(options, "flashrom", 8) == 0) {
752 vrc4171_slotb = SLOTB_IS_FLASHROM;
753 options += 8;
754 } else if (strncmp(options, "none", 4) == 0) {
755 vrc4171_slotb = SLOTB_IS_NONE;
756 options += 4;
757 }
758
759 if (*options != ',')
760 return 0;
761 options++;
762
763 if (strncmp(options, "memnoprobe", 10) == 0)
764 vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_MEM;
765 if (strncmp(options, "ionoprobe", 9) == 0)
766 vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_IO;
767 if (strncmp(options, "noprobe", 7) == 0)
768 vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_ALL;
769 }
770 }
771
772 return 0;
773 }
774
775 __setup("vrc4171_card=", vrc4171_card_setup);
776
777 static int vrc4171_card_suspend(struct device *dev, pm_message_t state, u32 level)
778 {
779 int retval = 0;
780
781 if (level == SUSPEND_SAVE_STATE)
782 retval = pcmcia_socket_dev_suspend(dev, state);
783
784 return retval;
785 }
786
787 static int vrc4171_card_resume(struct device *dev, u32 level)
788 {
789 int retval = 0;
790
791 if (level == RESUME_RESTORE_STATE)
792 retval = pcmcia_socket_dev_resume(dev);
793
794 return retval;
795 }
796
797 static struct device_driver vrc4171_card_driver = {
798 .name = vrc4171_card_name,
799 .bus = &platform_bus_type,
800 .suspend = vrc4171_card_suspend,
801 .resume = vrc4171_card_resume,
802 };
803
804 static int __devinit vrc4171_card_init(void)
805 {
806 int retval;
807
808 retval = driver_register(&vrc4171_card_driver);
809 if (retval < 0)
810 return retval;
811
812 retval = platform_device_register(&vrc4171_card_device);
813 if (retval < 0) {
814 driver_unregister(&vrc4171_card_driver);
815 return retval;
816 }
817
818 vrc4171_set_multifunction_pin(vrc4171_slotb);
819
820 retval = vrc4171_add_sockets();
821 if (retval == 0)
822 retval = request_irq(vrc4171_irq, pccard_interrupt, SA_SHIRQ,
823 vrc4171_card_name, vrc4171_sockets);
824
825 if (retval < 0) {
826 vrc4171_remove_sockets();
827 platform_device_unregister(&vrc4171_card_device);
828 driver_unregister(&vrc4171_card_driver);
829 return retval;
830 }
831
832 printk(KERN_INFO "%s, connected to IRQ %d\n", vrc4171_card_driver.name, vrc4171_irq);
833
834 return 0;
835 }
836
837 static void __devexit vrc4171_card_exit(void)
838 {
839 free_irq(vrc4171_irq, vrc4171_sockets);
840 vrc4171_remove_sockets();
841 platform_device_unregister(&vrc4171_card_device);
842 driver_unregister(&vrc4171_card_driver);
843 }
844
845 module_init(vrc4171_card_init);
846 module_exit(vrc4171_card_exit);
Support for the Chinese Samsung S3C2440 based development boards