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[PATCH] arch/sparc64/Kconfig: fix HUGETLB_PAGE_SIZE_64K dependencies
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / pcmcia / vrc4171_card.c
blob38a028c725d47e0aaebe529a6a33ff1e24710357
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 #include <linux/platform_device.h>
28
29 #include <asm/io.h>
30
31 #include <pcmcia/ss.h>
32
33 #include "i82365.h"
34
35 MODULE_DESCRIPTION("NEC VRC4171 Card Controllers driver for Socket Services");
36 MODULE_AUTHOR("Yoichi Yuasa <yuasa@hh.iij4u.or.jp>");
37 MODULE_LICENSE("GPL");
38
39 #define CARD_MAX_SLOTS 2
40 #define CARD_SLOTA 0
41 #define CARD_SLOTB 1
42 #define CARD_SLOTB_OFFSET 0x40
43
44 #define CARD_MEM_START 0x10000000
45 #define CARD_MEM_END 0x13ffffff
46 #define CARD_MAX_MEM_OFFSET 0x3ffffff
47 #define CARD_MAX_MEM_SPEED 1000
48
49 #define CARD_CONTROLLER_INDEX 0x03e0
50 #define CARD_CONTROLLER_DATA 0x03e1
51 /* Power register */
52 #define VPP_GET_VCC 0x01
53 #define POWER_ENABLE 0x10
54 #define CARD_VOLTAGE_SENSE 0x1f
55 #define VCC_3VORXV_CAPABLE 0x00
56 #define VCC_XV_ONLY 0x01
57 #define VCC_3V_CAPABLE 0x02
58 #define VCC_5V_ONLY 0x03
59 #define CARD_VOLTAGE_SELECT 0x2f
60 #define VCC_3V 0x01
61 #define VCC_5V 0x00
62 #define VCC_XV 0x02
63 #define VCC_STATUS_3V 0x02
64 #define VCC_STATUS_5V 0x01
65 #define VCC_STATUS_XV 0x03
66 #define GLOBAL_CONTROL 0x1e
67 #define EXWRBK 0x04
68 #define IRQPM_EN 0x08
69 #define CLRPMIRQ 0x10
70
71 #define INTERRUPT_STATUS 0x05fa
72 #define IRQ_A 0x02
73 #define IRQ_B 0x04
74
75 #define CONFIGURATION1 0x05fe
76 #define SLOTB_CONFIG 0xc000
77 #define SLOTB_NONE 0x0000
78 #define SLOTB_PCCARD 0x4000
79 #define SLOTB_CF 0x8000
80 #define SLOTB_FLASHROM 0xc000
81
82 #define CARD_CONTROLLER_START CARD_CONTROLLER_INDEX
83 #define CARD_CONTROLLER_END CARD_CONTROLLER_DATA
84
85 #define IO_MAX_MAPS 2
86 #define MEM_MAX_MAPS 5
87
88 typedef enum {
89 SLOT_PROBE = 0,
90 SLOT_NOPROBE_IO,
91 SLOT_NOPROBE_MEM,
92 SLOT_NOPROBE_ALL,
93 SLOT_INITIALIZED,
94 } vrc4171_slot_t;
95
96 typedef enum {
97 SLOTB_IS_NONE,
98 SLOTB_IS_PCCARD,
99 SLOTB_IS_CF,
100 SLOTB_IS_FLASHROM,
101 } vrc4171_slotb_t;
102
103 typedef struct vrc4171_socket {
104 vrc4171_slot_t slot;
105 struct pcmcia_socket pcmcia_socket;
106 char name[24];
107 int csc_irq;
108 int io_irq;
109 } vrc4171_socket_t;
110
111 static vrc4171_socket_t vrc4171_sockets[CARD_MAX_SLOTS];
112 static vrc4171_slotb_t vrc4171_slotb = SLOTB_IS_NONE;
113 static char vrc4171_card_name[] = "NEC VRC4171 Card Controller";
114 static unsigned int vrc4171_irq;
115 static uint16_t vrc4171_irq_mask = 0xdeb8;
116
117 static struct resource vrc4171_card_resource[3] = {
118 { .name = vrc4171_card_name,
119 .start = CARD_CONTROLLER_START,
120 .end = CARD_CONTROLLER_END,
121 .flags = IORESOURCE_IO, },
122 { .name = vrc4171_card_name,
123 .start = INTERRUPT_STATUS,
124 .end = INTERRUPT_STATUS,
125 .flags = IORESOURCE_IO, },
126 { .name = vrc4171_card_name,
127 .start = CONFIGURATION1,
128 .end = CONFIGURATION1,
129 .flags = IORESOURCE_IO, },
130 };
131
132 static struct platform_device vrc4171_card_device = {
133 .name = vrc4171_card_name,
134 .id = 0,
135 .num_resources = 3,
136 .resource = vrc4171_card_resource,
137 };
138
139 static inline uint16_t vrc4171_get_irq_status(void)
140 {
141 return inw(INTERRUPT_STATUS);
142 }
143
144 static inline void vrc4171_set_multifunction_pin(vrc4171_slotb_t config)
145 {
146 uint16_t config1;
147
148 config1 = inw(CONFIGURATION1);
149 config1 &= ~SLOTB_CONFIG;
150
151 switch (config) {
152 case SLOTB_IS_NONE:
153 config1 |= SLOTB_NONE;
154 break;
155 case SLOTB_IS_PCCARD:
156 config1 |= SLOTB_PCCARD;
157 break;
158 case SLOTB_IS_CF:
159 config1 |= SLOTB_CF;
160 break;
161 case SLOTB_IS_FLASHROM:
162 config1 |= SLOTB_FLASHROM;
163 break;
164 default:
165 break;
166 }
167
168 outw(config1, CONFIGURATION1);
169 }
170
171 static inline uint8_t exca_read_byte(int slot, uint8_t index)
172 {
173 if (slot == CARD_SLOTB)
174 index += CARD_SLOTB_OFFSET;
175
176 outb(index, CARD_CONTROLLER_INDEX);
177 return inb(CARD_CONTROLLER_DATA);
178 }
179
180 static inline uint16_t exca_read_word(int slot, uint8_t index)
181 {
182 uint16_t data;
183
184 if (slot == CARD_SLOTB)
185 index += CARD_SLOTB_OFFSET;
186
187 outb(index++, CARD_CONTROLLER_INDEX);
188 data = inb(CARD_CONTROLLER_DATA);
189
190 outb(index, CARD_CONTROLLER_INDEX);
191 data |= ((uint16_t)inb(CARD_CONTROLLER_DATA)) << 8;
192
193 return data;
194 }
195
196 static inline uint8_t exca_write_byte(int slot, uint8_t index, uint8_t data)
197 {
198 if (slot == CARD_SLOTB)
199 index += CARD_SLOTB_OFFSET;
200
201 outb(index, CARD_CONTROLLER_INDEX);
202 outb(data, CARD_CONTROLLER_DATA);
203
204 return data;
205 }
206
207 static inline uint16_t exca_write_word(int slot, uint8_t index, uint16_t data)
208 {
209 if (slot == CARD_SLOTB)
210 index += CARD_SLOTB_OFFSET;
211
212 outb(index++, CARD_CONTROLLER_INDEX);
213 outb(data, CARD_CONTROLLER_DATA);
214
215 outb(index, CARD_CONTROLLER_INDEX);
216 outb((uint8_t)(data >> 8), CARD_CONTROLLER_DATA);
217
218 return data;
219 }
220
221 static inline int search_nonuse_irq(void)
222 {
223 int i;
224
225 for (i = 0; i < 16; i++) {
226 if (vrc4171_irq_mask & (1 << i)) {
227 vrc4171_irq_mask &= ~(1 << i);
228 return i;
229 }
230 }
231
232 return -1;
233 }
234
235 static int pccard_init(struct pcmcia_socket *sock)
236 {
237 vrc4171_socket_t *socket;
238 unsigned int slot;
239
240 sock->features |= SS_CAP_PCCARD | SS_CAP_PAGE_REGS;
241 sock->irq_mask = 0;
242 sock->map_size = 0x1000;
243 sock->pci_irq = vrc4171_irq;
244
245 slot = sock->sock;
246 socket = &vrc4171_sockets[slot];
247 socket->csc_irq = search_nonuse_irq();
248 socket->io_irq = search_nonuse_irq();
249
250 return 0;
251 }
252
253 static int pccard_get_status(struct pcmcia_socket *sock, u_int *value)
254 {
255 unsigned int slot;
256 uint8_t status, sense;
257 u_int val = 0;
258
259 if (sock == NULL || sock->sock >= CARD_MAX_SLOTS || value == NULL)
260 return -EINVAL;
261
262 slot = sock->sock;
263
264 status = exca_read_byte(slot, I365_STATUS);
265 if (exca_read_byte(slot, I365_INTCTL) & I365_PC_IOCARD) {
266 if (status & I365_CS_STSCHG)
267 val |= SS_STSCHG;
268 } else {
269 if (!(status & I365_CS_BVD1))
270 val |= SS_BATDEAD;
271 else if ((status & (I365_CS_BVD1 | I365_CS_BVD2)) == I365_CS_BVD1)
272 val |= SS_BATWARN;
273 }
274 if ((status & I365_CS_DETECT) == I365_CS_DETECT)
275 val |= SS_DETECT;
276 if (status & I365_CS_WRPROT)
277 val |= SS_WRPROT;
278 if (status & I365_CS_READY)
279 val |= SS_READY;
280 if (status & I365_CS_POWERON)
281 val |= SS_POWERON;
282
283 sense = exca_read_byte(slot, CARD_VOLTAGE_SENSE);
284 switch (sense) {
285 case VCC_3VORXV_CAPABLE:
286 val |= SS_3VCARD | SS_XVCARD;
287 break;
288 case VCC_XV_ONLY:
289 val |= SS_XVCARD;
290 break;
291 case VCC_3V_CAPABLE:
292 val |= SS_3VCARD;
293 break;
294 default:
295 /* 5V only */
296 break;
297 }
298
299 *value = val;
300
301 return 0;
302 }
303
304 static inline u_char get_Vcc_value(uint8_t voltage)
305 {
306 switch (voltage) {
307 case VCC_STATUS_3V:
308 return 33;
309 case VCC_STATUS_5V:
310 return 50;
311 default:
312 break;
313 }
314
315 return 0;
316 }
317
318 static inline u_char get_Vpp_value(uint8_t power, u_char Vcc)
319 {
320 if ((power & 0x03) == 0x01 || (power & 0x03) == 0x02)
321 return Vcc;
322
323 return 0;
324 }
325
326 static int pccard_get_socket(struct pcmcia_socket *sock, socket_state_t *state)
327 {
328 unsigned int slot;
329 uint8_t power, voltage, control, cscint;
330
331 if (sock == NULL || sock->sock >= CARD_MAX_SLOTS || state == NULL)
332 return -EINVAL;
333
334 slot = sock->sock;
335
336 power = exca_read_byte(slot, I365_POWER);
337 voltage = exca_read_byte(slot, CARD_VOLTAGE_SELECT);
338
339 state->Vcc = get_Vcc_value(voltage);
340 state->Vpp = get_Vpp_value(power, state->Vcc);
341
342 state->flags = 0;
343 if (power & POWER_ENABLE)
344 state->flags |= SS_PWR_AUTO;
345 if (power & I365_PWR_OUT)
346 state->flags |= SS_OUTPUT_ENA;
347
348 control = exca_read_byte(slot, I365_INTCTL);
349 if (control & I365_PC_IOCARD)
350 state->flags |= SS_IOCARD;
351 if (!(control & I365_PC_RESET))
352 state->flags |= SS_RESET;
353
354 cscint = exca_read_byte(slot, I365_CSCINT);
355 state->csc_mask = 0;
356 if (state->flags & SS_IOCARD) {
357 if (cscint & I365_CSC_STSCHG)
358 state->flags |= SS_STSCHG;
359 } else {
360 if (cscint & I365_CSC_BVD1)
361 state->csc_mask |= SS_BATDEAD;
362 if (cscint & I365_CSC_BVD2)
363 state->csc_mask |= SS_BATWARN;
364 }
365 if (cscint & I365_CSC_READY)
366 state->csc_mask |= SS_READY;
367 if (cscint & I365_CSC_DETECT)
368 state->csc_mask |= SS_DETECT;
369
370 return 0;
371 }
372
373 static inline uint8_t set_Vcc_value(u_char Vcc)
374 {
375 switch (Vcc) {
376 case 33:
377 return VCC_3V;
378 case 50:
379 return VCC_5V;
380 }
381
382 /* Small voltage is chosen for safety. */
383 return VCC_3V;
384 }
385
386 static int pccard_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
387 {
388 vrc4171_socket_t *socket;
389 unsigned int slot;
390 uint8_t voltage, power, control, cscint;
391
392 if (sock == NULL || sock->sock >= CARD_MAX_SLOTS ||
393 (state->Vpp != state->Vcc && state->Vpp != 0) ||
394 (state->Vcc != 50 && state->Vcc != 33 && state->Vcc != 0))
395 return -EINVAL;
396
397 slot = sock->sock;
398 socket = &vrc4171_sockets[slot];
399
400 spin_lock_irq(&sock->lock);
401
402 voltage = set_Vcc_value(state->Vcc);
403 exca_write_byte(slot, CARD_VOLTAGE_SELECT, voltage);
404
405 power = POWER_ENABLE;
406 if (state->Vpp == state->Vcc)
407 power |= VPP_GET_VCC;
408 if (state->flags & SS_OUTPUT_ENA)
409 power |= I365_PWR_OUT;
410 exca_write_byte(slot, I365_POWER, power);
411
412 control = 0;
413 if (state->io_irq != 0)
414 control |= socket->io_irq;
415 if (state->flags & SS_IOCARD)
416 control |= I365_PC_IOCARD;
417 if (state->flags & SS_RESET)
418 control &= ~I365_PC_RESET;
419 else
420 control |= I365_PC_RESET;
421 exca_write_byte(slot, I365_INTCTL, control);
422
423 cscint = 0;
424 exca_write_byte(slot, I365_CSCINT, cscint);
425 exca_read_byte(slot, I365_CSC); /* clear CardStatus change */
426 if (state->csc_mask != 0)
427 cscint |= socket->csc_irq << 8;
428 if (state->flags & SS_IOCARD) {
429 if (state->csc_mask & SS_STSCHG)
430 cscint |= I365_CSC_STSCHG;
431 } else {
432 if (state->csc_mask & SS_BATDEAD)
433 cscint |= I365_CSC_BVD1;
434 if (state->csc_mask & SS_BATWARN)
435 cscint |= I365_CSC_BVD2;
436 }
437 if (state->csc_mask & SS_READY)
438 cscint |= I365_CSC_READY;
439 if (state->csc_mask & SS_DETECT)
440 cscint |= I365_CSC_DETECT;
441 exca_write_byte(slot, I365_CSCINT, cscint);
442
443 spin_unlock_irq(&sock->lock);
444
445 return 0;
446 }
447
448 static int pccard_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io)
449 {
450 unsigned int slot;
451 uint8_t ioctl, addrwin;
452 u_char map;
453
454 if (sock == NULL || sock->sock >= CARD_MAX_SLOTS ||
455 io == NULL || io->map >= IO_MAX_MAPS ||
456 io->start > 0xffff || io->stop > 0xffff || io->start > io->stop)
457 return -EINVAL;
458
459 slot = sock->sock;
460 map = io->map;
461
462 addrwin = exca_read_byte(slot, I365_ADDRWIN);
463 if (addrwin & I365_ENA_IO(map)) {
464 addrwin &= ~I365_ENA_IO(map);
465 exca_write_byte(slot, I365_ADDRWIN, addrwin);
466 }
467
468 exca_write_word(slot, I365_IO(map)+I365_W_START, io->start);
469 exca_write_word(slot, I365_IO(map)+I365_W_STOP, io->stop);
470
471 ioctl = 0;
472 if (io->speed > 0)
473 ioctl |= I365_IOCTL_WAIT(map);
474 if (io->flags & MAP_16BIT)
475 ioctl |= I365_IOCTL_16BIT(map);
476 if (io->flags & MAP_AUTOSZ)
477 ioctl |= I365_IOCTL_IOCS16(map);
478 if (io->flags & MAP_0WS)
479 ioctl |= I365_IOCTL_0WS(map);
480 exca_write_byte(slot, I365_IOCTL, ioctl);
481
482 if (io->flags & MAP_ACTIVE) {
483 addrwin |= I365_ENA_IO(map);
484 exca_write_byte(slot, I365_ADDRWIN, addrwin);
485 }
486
487 return 0;
488 }
489
490 static int pccard_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem)
491 {
492 unsigned int slot;
493 uint16_t start, stop, offset;
494 uint8_t addrwin;
495 u_char map;
496
497 if (sock == NULL || sock->sock >= CARD_MAX_SLOTS ||
498 mem == NULL || mem->map >= MEM_MAX_MAPS ||
499 mem->res->start < CARD_MEM_START || mem->res->start > CARD_MEM_END ||
500 mem->res->end < CARD_MEM_START || mem->res->end > CARD_MEM_END ||
501 mem->res->start > mem->res->end ||
502 mem->card_start > CARD_MAX_MEM_OFFSET ||
503 mem->speed > CARD_MAX_MEM_SPEED)
504 return -EINVAL;
505
506 slot = sock->sock;
507 map = mem->map;
508
509 addrwin = exca_read_byte(slot, I365_ADDRWIN);
510 if (addrwin & I365_ENA_MEM(map)) {
511 addrwin &= ~I365_ENA_MEM(map);
512 exca_write_byte(slot, I365_ADDRWIN, addrwin);
513 }
514
515 start = (mem->res->start >> 12) & 0x3fff;
516 if (mem->flags & MAP_16BIT)
517 start |= I365_MEM_16BIT;
518 exca_write_word(slot, I365_MEM(map)+I365_W_START, start);
519
520 stop = (mem->res->end >> 12) & 0x3fff;
521 switch (mem->speed) {
522 case 0:
523 break;
524 case 1:
525 stop |= I365_MEM_WS0;
526 break;
527 case 2:
528 stop |= I365_MEM_WS1;
529 break;
530 default:
531 stop |= I365_MEM_WS0 | I365_MEM_WS1;
532 break;
533 }
534 exca_write_word(slot, I365_MEM(map)+I365_W_STOP, stop);
535
536 offset = (mem->card_start >> 12) & 0x3fff;
537 if (mem->flags & MAP_ATTRIB)
538 offset |= I365_MEM_REG;
539 if (mem->flags & MAP_WRPROT)
540 offset |= I365_MEM_WRPROT;
541 exca_write_word(slot, I365_MEM(map)+I365_W_OFF, offset);
542
543 if (mem->flags & MAP_ACTIVE) {
544 addrwin |= I365_ENA_MEM(map);
545 exca_write_byte(slot, I365_ADDRWIN, addrwin);
546 }
547
548 return 0;
549 }
550
551 static struct pccard_operations vrc4171_pccard_operations = {
552 .init = pccard_init,
553 .get_status = pccard_get_status,
554 .get_socket = pccard_get_socket,
555 .set_socket = pccard_set_socket,
556 .set_io_map = pccard_set_io_map,
557 .set_mem_map = pccard_set_mem_map,
558 };
559
560 static inline unsigned int get_events(int slot)
561 {
562 unsigned int events = 0;
563 uint8_t status, csc;
564
565 status = exca_read_byte(slot, I365_STATUS);
566 csc = exca_read_byte(slot, I365_CSC);
567
568 if (exca_read_byte(slot, I365_INTCTL) & I365_PC_IOCARD) {
569 if ((csc & I365_CSC_STSCHG) && (status & I365_CS_STSCHG))
570 events |= SS_STSCHG;
571 } else {
572 if (csc & (I365_CSC_BVD1 | I365_CSC_BVD2)) {
573 if (!(status & I365_CS_BVD1))
574 events |= SS_BATDEAD;
575 else if ((status & (I365_CS_BVD1 | I365_CS_BVD2)) == I365_CS_BVD1)
576 events |= SS_BATWARN;
577 }
578 }
579 if ((csc & I365_CSC_READY) && (status & I365_CS_READY))
580 events |= SS_READY;
581 if ((csc & I365_CSC_DETECT) && ((status & I365_CS_DETECT) == I365_CS_DETECT))
582 events |= SS_DETECT;
583
584 return events;
585 }
586
587 static irqreturn_t pccard_interrupt(int irq, void *dev_id, struct pt_regs *regs)
588 {
589 vrc4171_socket_t *socket;
590 unsigned int events;
591 irqreturn_t retval = IRQ_NONE;
592 uint16_t status;
593
594 status = vrc4171_get_irq_status();
595 if (status & IRQ_A) {
596 socket = &vrc4171_sockets[CARD_SLOTA];
597 if (socket->slot == SLOT_INITIALIZED) {
598 if (status & (1 << socket->csc_irq)) {
599 events = get_events(CARD_SLOTA);
600 if (events != 0) {
601 pcmcia_parse_events(&socket->pcmcia_socket, events);
602 retval = IRQ_HANDLED;
603 }
604 }
605 }
606 }
607
608 if (status & IRQ_B) {
609 socket = &vrc4171_sockets[CARD_SLOTB];
610 if (socket->slot == SLOT_INITIALIZED) {
611 if (status & (1 << socket->csc_irq)) {
612 events = get_events(CARD_SLOTB);
613 if (events != 0) {
614 pcmcia_parse_events(&socket->pcmcia_socket, events);
615 retval = IRQ_HANDLED;
616 }
617 }
618 }
619 }
620
621 return retval;
622 }
623
624 static inline void reserve_using_irq(int slot)
625 {
626 unsigned int irq;
627
628 irq = exca_read_byte(slot, I365_INTCTL);
629 irq &= 0x0f;
630 vrc4171_irq_mask &= ~(1 << irq);
631
632 irq = exca_read_byte(slot, I365_CSCINT);
633 irq = (irq & 0xf0) >> 4;
634 vrc4171_irq_mask &= ~(1 << irq);
635 }
636
637 static int __devinit vrc4171_add_sockets(void)
638 {
639 vrc4171_socket_t *socket;
640 int slot, retval;
641
642 for (slot = 0; slot < CARD_MAX_SLOTS; slot++) {
643 if (slot == CARD_SLOTB && vrc4171_slotb == SLOTB_IS_NONE)
644 continue;
645
646 socket = &vrc4171_sockets[slot];
647 if (socket->slot != SLOT_PROBE) {
648 uint8_t addrwin;
649
650 switch (socket->slot) {
651 case SLOT_NOPROBE_MEM:
652 addrwin = exca_read_byte(slot, I365_ADDRWIN);
653 addrwin &= 0x1f;
654 exca_write_byte(slot, I365_ADDRWIN, addrwin);
655 break;
656 case SLOT_NOPROBE_IO:
657 addrwin = exca_read_byte(slot, I365_ADDRWIN);
658 addrwin &= 0xc0;
659 exca_write_byte(slot, I365_ADDRWIN, addrwin);
660 break;
661 default:
662 break;
663 }
664
665 reserve_using_irq(slot);
666 continue;
667 }
668
669 sprintf(socket->name, "NEC VRC4171 Card Slot %1c", 'A' + slot);
670 socket->pcmcia_socket.dev.dev = &vrc4171_card_device.dev;
671 socket->pcmcia_socket.ops = &vrc4171_pccard_operations;
672 socket->pcmcia_socket.owner = THIS_MODULE;
673
674 retval = pcmcia_register_socket(&socket->pcmcia_socket);
675 if (retval < 0)
676 return retval;
677
678 exca_write_byte(slot, I365_ADDRWIN, 0);
679 exca_write_byte(slot, GLOBAL_CONTROL, 0);
680
681 socket->slot = SLOT_INITIALIZED;
682 }
683
684 return 0;
685 }
686
687 static void vrc4171_remove_sockets(void)
688 {
689 vrc4171_socket_t *socket;
690 int slot;
691
692 for (slot = 0; slot < CARD_MAX_SLOTS; slot++) {
693 if (slot == CARD_SLOTB && vrc4171_slotb == SLOTB_IS_NONE)
694 continue;
695
696 socket = &vrc4171_sockets[slot];
697 if (socket->slot == SLOT_INITIALIZED)
698 pcmcia_unregister_socket(&socket->pcmcia_socket);
699
700 socket->slot = SLOT_PROBE;
701 }
702 }
703
704 static int __devinit vrc4171_card_setup(char *options)
705 {
706 if (options == NULL || *options == '\0')
707 return 0;
708
709 if (strncmp(options, "irq:", 4) == 0) {
710 int irq;
711 options += 4;
712 irq = simple_strtoul(options, &options, 0);
713 if (irq >= 0 && irq < NR_IRQS)
714 vrc4171_irq = irq;
715
716 if (*options != ',')
717 return 0;
718 options++;
719 }
720
721 if (strncmp(options, "slota:", 6) == 0) {
722 options += 6;
723 if (*options != '\0') {
724 if (strncmp(options, "memnoprobe", 10) == 0) {
725 vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_MEM;
726 options += 10;
727 } else if (strncmp(options, "ionoprobe", 9) == 0) {
728 vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_IO;
729 options += 9;
730 } else if ( strncmp(options, "noprobe", 7) == 0) {
731 vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_ALL;
732 options += 7;
733 }
734
735 if (*options != ',')
736 return 0;
737 options++;
738 } else
739 return 0;
740
741 }
742
743 if (strncmp(options, "slotb:", 6) == 0) {
744 options += 6;
745 if (*options != '\0') {
746 if (strncmp(options, "pccard", 6) == 0) {
747 vrc4171_slotb = SLOTB_IS_PCCARD;
748 options += 6;
749 } else if (strncmp(options, "cf", 2) == 0) {
750 vrc4171_slotb = SLOTB_IS_CF;
751 options += 2;
752 } else if (strncmp(options, "flashrom", 8) == 0) {
753 vrc4171_slotb = SLOTB_IS_FLASHROM;
754 options += 8;
755 } else if (strncmp(options, "none", 4) == 0) {
756 vrc4171_slotb = SLOTB_IS_NONE;
757 options += 4;
758 }
759
760 if (*options != ',')
761 return 0;
762 options++;
763
764 if (strncmp(options, "memnoprobe", 10) == 0)
765 vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_MEM;
766 if (strncmp(options, "ionoprobe", 9) == 0)
767 vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_IO;
768 if (strncmp(options, "noprobe", 7) == 0)
769 vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_ALL;
770 }
771 }
772
773 return 0;
774 }
775
776 __setup("vrc4171_card=", vrc4171_card_setup);
777
778 static struct device_driver vrc4171_card_driver = {
779 .name = vrc4171_card_name,
780 .bus = &platform_bus_type,
781 .suspend = pcmcia_socket_dev_suspend,
782 .resume = pcmcia_socket_dev_resume,
783 };
784
785 static int __devinit vrc4171_card_init(void)
786 {
787 int retval;
788
789 retval = driver_register(&vrc4171_card_driver);
790 if (retval < 0)
791 return retval;
792
793 retval = platform_device_register(&vrc4171_card_device);
794 if (retval < 0) {
795 driver_unregister(&vrc4171_card_driver);
796 return retval;
797 }
798
799 vrc4171_set_multifunction_pin(vrc4171_slotb);
800
801 retval = vrc4171_add_sockets();
802 if (retval == 0)
803 retval = request_irq(vrc4171_irq, pccard_interrupt, SA_SHIRQ,
804 vrc4171_card_name, vrc4171_sockets);
805
806 if (retval < 0) {
807 vrc4171_remove_sockets();
808 platform_device_unregister(&vrc4171_card_device);
809 driver_unregister(&vrc4171_card_driver);
810 return retval;
811 }
812
813 printk(KERN_INFO "%s, connected to IRQ %d\n", vrc4171_card_driver.name, vrc4171_irq);
814
815 return 0;
816 }
817
818 static void __devexit vrc4171_card_exit(void)
819 {
820 free_irq(vrc4171_irq, vrc4171_sockets);
821 vrc4171_remove_sockets();
822 platform_device_unregister(&vrc4171_card_device);
823 driver_unregister(&vrc4171_card_driver);
824 }
825
826 module_init(vrc4171_card_init);
827 module_exit(vrc4171_card_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree