Root/drivers/pcmcia/vrc4171_card.c

1/*
2 * vrc4171_card.c, NEC VRC4171 Card Controller driver for Socket Services.
3 *
4 * Copyright (C) 2003-2005 Yoichi Yuasa <yuasa@linux-mips.org>
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/types.h>
26#include <linux/platform_device.h>
27
28#include <asm/io.h>
29
30#include <pcmcia/ss.h>
31
32#include "i82365.h"
33
34MODULE_DESCRIPTION("NEC VRC4171 Card Controllers driver for Socket Services");
35MODULE_AUTHOR("Yoichi Yuasa <yuasa@linux-mips.org>");
36MODULE_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
87typedef 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
95typedef enum {
96    SLOTB_IS_NONE,
97    SLOTB_IS_PCCARD,
98    SLOTB_IS_CF,
99    SLOTB_IS_FLASHROM,
100} vrc4171_slotb_t;
101
102typedef 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    spinlock_t lock;
109} vrc4171_socket_t;
110
111static vrc4171_socket_t vrc4171_sockets[CARD_MAX_SLOTS];
112static vrc4171_slotb_t vrc4171_slotb = SLOTB_IS_NONE;
113static char vrc4171_card_name[] = "NEC VRC4171 Card Controller";
114static unsigned int vrc4171_irq;
115static uint16_t vrc4171_irq_mask = 0xdeb8;
116
117static 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
132static 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
139static inline uint16_t vrc4171_get_irq_status(void)
140{
141    return inw(INTERRUPT_STATUS);
142}
143
144static 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
171static 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
180static 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
196static 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
207static 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
221static 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
235static 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
253static 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
304static inline uint8_t set_Vcc_value(u_char Vcc)
305{
306    switch (Vcc) {
307    case 33:
308        return VCC_3V;
309    case 50:
310        return VCC_5V;
311    }
312
313    /* Small voltage is chosen for safety. */
314    return VCC_3V;
315}
316
317static int pccard_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
318{
319    vrc4171_socket_t *socket;
320    unsigned int slot;
321    uint8_t voltage, power, control, cscint;
322
323    if (sock == NULL || sock->sock >= CARD_MAX_SLOTS ||
324        (state->Vpp != state->Vcc && state->Vpp != 0) ||
325        (state->Vcc != 50 && state->Vcc != 33 && state->Vcc != 0))
326        return -EINVAL;
327
328    slot = sock->sock;
329    socket = &vrc4171_sockets[slot];
330
331    spin_lock_irq(&socket->lock);
332
333    voltage = set_Vcc_value(state->Vcc);
334    exca_write_byte(slot, CARD_VOLTAGE_SELECT, voltage);
335
336    power = POWER_ENABLE;
337    if (state->Vpp == state->Vcc)
338        power |= VPP_GET_VCC;
339    if (state->flags & SS_OUTPUT_ENA)
340        power |= I365_PWR_OUT;
341    exca_write_byte(slot, I365_POWER, power);
342
343    control = 0;
344    if (state->io_irq != 0)
345        control |= socket->io_irq;
346    if (state->flags & SS_IOCARD)
347        control |= I365_PC_IOCARD;
348    if (state->flags & SS_RESET)
349        control &= ~I365_PC_RESET;
350    else
351        control |= I365_PC_RESET;
352    exca_write_byte(slot, I365_INTCTL, control);
353
354        cscint = 0;
355        exca_write_byte(slot, I365_CSCINT, cscint);
356    exca_read_byte(slot, I365_CSC); /* clear CardStatus change */
357    if (state->csc_mask != 0)
358        cscint |= socket->csc_irq << 8;
359    if (state->flags & SS_IOCARD) {
360        if (state->csc_mask & SS_STSCHG)
361            cscint |= I365_CSC_STSCHG;
362    } else {
363        if (state->csc_mask & SS_BATDEAD)
364            cscint |= I365_CSC_BVD1;
365        if (state->csc_mask & SS_BATWARN)
366            cscint |= I365_CSC_BVD2;
367    }
368    if (state->csc_mask & SS_READY)
369        cscint |= I365_CSC_READY;
370    if (state->csc_mask & SS_DETECT)
371        cscint |= I365_CSC_DETECT;
372        exca_write_byte(slot, I365_CSCINT, cscint);
373
374    spin_unlock_irq(&socket->lock);
375
376    return 0;
377}
378
379static int pccard_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io)
380{
381    unsigned int slot;
382    uint8_t ioctl, addrwin;
383    u_char map;
384
385    if (sock == NULL || sock->sock >= CARD_MAX_SLOTS ||
386        io == NULL || io->map >= IO_MAX_MAPS ||
387        io->start > 0xffff || io->stop > 0xffff || io->start > io->stop)
388        return -EINVAL;
389
390    slot = sock->sock;
391    map = io->map;
392
393    addrwin = exca_read_byte(slot, I365_ADDRWIN);
394    if (addrwin & I365_ENA_IO(map)) {
395        addrwin &= ~I365_ENA_IO(map);
396        exca_write_byte(slot, I365_ADDRWIN, addrwin);
397    }
398
399    exca_write_word(slot, I365_IO(map)+I365_W_START, io->start);
400    exca_write_word(slot, I365_IO(map)+I365_W_STOP, io->stop);
401
402    ioctl = 0;
403    if (io->speed > 0)
404        ioctl |= I365_IOCTL_WAIT(map);
405    if (io->flags & MAP_16BIT)
406        ioctl |= I365_IOCTL_16BIT(map);
407    if (io->flags & MAP_AUTOSZ)
408        ioctl |= I365_IOCTL_IOCS16(map);
409    if (io->flags & MAP_0WS)
410        ioctl |= I365_IOCTL_0WS(map);
411    exca_write_byte(slot, I365_IOCTL, ioctl);
412
413    if (io->flags & MAP_ACTIVE) {
414        addrwin |= I365_ENA_IO(map);
415        exca_write_byte(slot, I365_ADDRWIN, addrwin);
416    }
417
418    return 0;
419}
420
421static int pccard_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem)
422{
423    unsigned int slot;
424    uint16_t start, stop, offset;
425    uint8_t addrwin;
426    u_char map;
427
428    if (sock == NULL || sock->sock >= CARD_MAX_SLOTS ||
429        mem == NULL || mem->map >= MEM_MAX_MAPS ||
430        mem->res->start < CARD_MEM_START || mem->res->start > CARD_MEM_END ||
431        mem->res->end < CARD_MEM_START || mem->res->end > CARD_MEM_END ||
432        mem->res->start > mem->res->end ||
433        mem->card_start > CARD_MAX_MEM_OFFSET ||
434        mem->speed > CARD_MAX_MEM_SPEED)
435        return -EINVAL;
436
437    slot = sock->sock;
438    map = mem->map;
439
440    addrwin = exca_read_byte(slot, I365_ADDRWIN);
441    if (addrwin & I365_ENA_MEM(map)) {
442        addrwin &= ~I365_ENA_MEM(map);
443        exca_write_byte(slot, I365_ADDRWIN, addrwin);
444    }
445
446    start = (mem->res->start >> 12) & 0x3fff;
447    if (mem->flags & MAP_16BIT)
448        start |= I365_MEM_16BIT;
449    exca_write_word(slot, I365_MEM(map)+I365_W_START, start);
450
451    stop = (mem->res->end >> 12) & 0x3fff;
452    switch (mem->speed) {
453    case 0:
454        break;
455    case 1:
456        stop |= I365_MEM_WS0;
457        break;
458    case 2:
459        stop |= I365_MEM_WS1;
460        break;
461    default:
462        stop |= I365_MEM_WS0 | I365_MEM_WS1;
463        break;
464    }
465    exca_write_word(slot, I365_MEM(map)+I365_W_STOP, stop);
466
467    offset = (mem->card_start >> 12) & 0x3fff;
468    if (mem->flags & MAP_ATTRIB)
469        offset |= I365_MEM_REG;
470    if (mem->flags & MAP_WRPROT)
471        offset |= I365_MEM_WRPROT;
472    exca_write_word(slot, I365_MEM(map)+I365_W_OFF, offset);
473
474    if (mem->flags & MAP_ACTIVE) {
475        addrwin |= I365_ENA_MEM(map);
476        exca_write_byte(slot, I365_ADDRWIN, addrwin);
477    }
478
479    return 0;
480}
481
482static struct pccard_operations vrc4171_pccard_operations = {
483    .init = pccard_init,
484    .get_status = pccard_get_status,
485    .set_socket = pccard_set_socket,
486    .set_io_map = pccard_set_io_map,
487    .set_mem_map = pccard_set_mem_map,
488};
489
490static inline unsigned int get_events(int slot)
491{
492    unsigned int events = 0;
493    uint8_t status, csc;
494
495    status = exca_read_byte(slot, I365_STATUS);
496    csc = exca_read_byte(slot, I365_CSC);
497
498    if (exca_read_byte(slot, I365_INTCTL) & I365_PC_IOCARD) {
499        if ((csc & I365_CSC_STSCHG) && (status & I365_CS_STSCHG))
500            events |= SS_STSCHG;
501    } else {
502        if (csc & (I365_CSC_BVD1 | I365_CSC_BVD2)) {
503            if (!(status & I365_CS_BVD1))
504                events |= SS_BATDEAD;
505            else if ((status & (I365_CS_BVD1 | I365_CS_BVD2)) == I365_CS_BVD1)
506                events |= SS_BATWARN;
507        }
508    }
509    if ((csc & I365_CSC_READY) && (status & I365_CS_READY))
510        events |= SS_READY;
511    if ((csc & I365_CSC_DETECT) && ((status & I365_CS_DETECT) == I365_CS_DETECT))
512        events |= SS_DETECT;
513
514    return events;
515}
516
517static irqreturn_t pccard_interrupt(int irq, void *dev_id)
518{
519    vrc4171_socket_t *socket;
520    unsigned int events;
521    irqreturn_t retval = IRQ_NONE;
522    uint16_t status;
523
524    status = vrc4171_get_irq_status();
525    if (status & IRQ_A) {
526        socket = &vrc4171_sockets[CARD_SLOTA];
527        if (socket->slot == SLOT_INITIALIZED) {
528            if (status & (1 << socket->csc_irq)) {
529                events = get_events(CARD_SLOTA);
530                if (events != 0) {
531                    pcmcia_parse_events(&socket->pcmcia_socket, events);
532                    retval = IRQ_HANDLED;
533                }
534            }
535        }
536    }
537
538    if (status & IRQ_B) {
539        socket = &vrc4171_sockets[CARD_SLOTB];
540        if (socket->slot == SLOT_INITIALIZED) {
541            if (status & (1 << socket->csc_irq)) {
542                events = get_events(CARD_SLOTB);
543                if (events != 0) {
544                    pcmcia_parse_events(&socket->pcmcia_socket, events);
545                    retval = IRQ_HANDLED;
546                }
547            }
548        }
549    }
550
551    return retval;
552}
553
554static inline void reserve_using_irq(int slot)
555{
556    unsigned int irq;
557
558    irq = exca_read_byte(slot, I365_INTCTL);
559    irq &= 0x0f;
560    vrc4171_irq_mask &= ~(1 << irq);
561
562    irq = exca_read_byte(slot, I365_CSCINT);
563    irq = (irq & 0xf0) >> 4;
564    vrc4171_irq_mask &= ~(1 << irq);
565}
566
567static int __devinit vrc4171_add_sockets(void)
568{
569    vrc4171_socket_t *socket;
570    int slot, retval;
571
572    for (slot = 0; slot < CARD_MAX_SLOTS; slot++) {
573        if (slot == CARD_SLOTB && vrc4171_slotb == SLOTB_IS_NONE)
574            continue;
575
576        socket = &vrc4171_sockets[slot];
577        if (socket->slot != SLOT_PROBE) {
578            uint8_t addrwin;
579
580            switch (socket->slot) {
581            case SLOT_NOPROBE_MEM:
582                addrwin = exca_read_byte(slot, I365_ADDRWIN);
583                addrwin &= 0x1f;
584                exca_write_byte(slot, I365_ADDRWIN, addrwin);
585                break;
586            case SLOT_NOPROBE_IO:
587                addrwin = exca_read_byte(slot, I365_ADDRWIN);
588                addrwin &= 0xc0;
589                exca_write_byte(slot, I365_ADDRWIN, addrwin);
590                break;
591            default:
592                break;
593            }
594
595            reserve_using_irq(slot);
596            continue;
597        }
598
599        sprintf(socket->name, "NEC VRC4171 Card Slot %1c", 'A' + slot);
600        socket->pcmcia_socket.dev.parent = &vrc4171_card_device.dev;
601        socket->pcmcia_socket.ops = &vrc4171_pccard_operations;
602        socket->pcmcia_socket.owner = THIS_MODULE;
603
604        retval = pcmcia_register_socket(&socket->pcmcia_socket);
605        if (retval < 0)
606            return retval;
607
608        exca_write_byte(slot, I365_ADDRWIN, 0);
609        exca_write_byte(slot, GLOBAL_CONTROL, 0);
610
611        socket->slot = SLOT_INITIALIZED;
612    }
613
614    return 0;
615}
616
617static void vrc4171_remove_sockets(void)
618{
619    vrc4171_socket_t *socket;
620    int slot;
621
622    for (slot = 0; slot < CARD_MAX_SLOTS; slot++) {
623        if (slot == CARD_SLOTB && vrc4171_slotb == SLOTB_IS_NONE)
624            continue;
625
626        socket = &vrc4171_sockets[slot];
627        if (socket->slot == SLOT_INITIALIZED)
628            pcmcia_unregister_socket(&socket->pcmcia_socket);
629
630        socket->slot = SLOT_PROBE;
631    }
632}
633
634static int __devinit vrc4171_card_setup(char *options)
635{
636    if (options == NULL || *options == '\0')
637        return 1;
638
639    if (strncmp(options, "irq:", 4) == 0) {
640        int irq;
641        options += 4;
642        irq = simple_strtoul(options, &options, 0);
643        if (irq >= 0 && irq < nr_irqs)
644            vrc4171_irq = irq;
645
646        if (*options != ',')
647            return 1;
648        options++;
649    }
650
651    if (strncmp(options, "slota:", 6) == 0) {
652        options += 6;
653        if (*options != '\0') {
654            if (strncmp(options, "memnoprobe", 10) == 0) {
655                vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_MEM;
656                options += 10;
657            } else if (strncmp(options, "ionoprobe", 9) == 0) {
658                vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_IO;
659                options += 9;
660            } else if ( strncmp(options, "noprobe", 7) == 0) {
661                vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_ALL;
662                options += 7;
663            }
664
665            if (*options != ',')
666                return 1;
667            options++;
668        } else
669            return 1;
670
671    }
672
673    if (strncmp(options, "slotb:", 6) == 0) {
674        options += 6;
675        if (*options != '\0') {
676            if (strncmp(options, "pccard", 6) == 0) {
677                vrc4171_slotb = SLOTB_IS_PCCARD;
678                options += 6;
679            } else if (strncmp(options, "cf", 2) == 0) {
680                vrc4171_slotb = SLOTB_IS_CF;
681                options += 2;
682            } else if (strncmp(options, "flashrom", 8) == 0) {
683                vrc4171_slotb = SLOTB_IS_FLASHROM;
684                options += 8;
685            } else if (strncmp(options, "none", 4) == 0) {
686                vrc4171_slotb = SLOTB_IS_NONE;
687                options += 4;
688            }
689
690            if (*options != ',')
691                return 1;
692            options++;
693
694            if (strncmp(options, "memnoprobe", 10) == 0)
695                vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_MEM;
696            if (strncmp(options, "ionoprobe", 9) == 0)
697                vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_IO;
698            if (strncmp(options, "noprobe", 7) == 0)
699                vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_ALL;
700        }
701    }
702
703    return 1;
704}
705
706__setup("vrc4171_card=", vrc4171_card_setup);
707
708static struct platform_driver vrc4171_card_driver = {
709    .driver = {
710        .name = vrc4171_card_name,
711        .owner = THIS_MODULE,
712    },
713};
714
715static int __devinit vrc4171_card_init(void)
716{
717    int retval;
718
719    retval = platform_driver_register(&vrc4171_card_driver);
720    if (retval < 0)
721        return retval;
722
723    retval = platform_device_register(&vrc4171_card_device);
724    if (retval < 0) {
725        platform_driver_unregister(&vrc4171_card_driver);
726        return retval;
727    }
728
729    vrc4171_set_multifunction_pin(vrc4171_slotb);
730
731    retval = vrc4171_add_sockets();
732    if (retval == 0)
733        retval = request_irq(vrc4171_irq, pccard_interrupt, IRQF_SHARED,
734                             vrc4171_card_name, vrc4171_sockets);
735
736    if (retval < 0) {
737        vrc4171_remove_sockets();
738        platform_device_unregister(&vrc4171_card_device);
739        platform_driver_unregister(&vrc4171_card_driver);
740        return retval;
741    }
742
743    printk(KERN_INFO "%s, connected to IRQ %d\n",
744        vrc4171_card_driver.driver.name, vrc4171_irq);
745
746    return 0;
747}
748
749static void __devexit vrc4171_card_exit(void)
750{
751    free_irq(vrc4171_irq, vrc4171_sockets);
752    vrc4171_remove_sockets();
753    platform_device_unregister(&vrc4171_card_device);
754    platform_driver_unregister(&vrc4171_card_driver);
755}
756
757module_init(vrc4171_card_init);
758module_exit(vrc4171_card_exit);
759

Archive Download this file



interactive