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20#include <linux/module.h>
21#include <linux/moduleparam.h>
22#include <linux/init.h>
23#include <linux/ioport.h>
24#include <linux/platform_device.h>
25#include <linux/interrupt.h>
26#include <linux/dma-mapping.h>
27#include <linux/delay.h>
28#include <linux/pnp.h>
29#include <linux/highmem.h>
30#include <linux/mmc/host.h>
31#include <linux/mmc/mmc.h>
32#include <linux/mmc/sd.h>
33#include <linux/scatterlist.h>
34#include <linux/slab.h>
35
36#include <asm/io.h>
37#include <asm/dma.h>
38
39#include "wbsd.h"
40
41#define DRIVER_NAME "wbsd"
42
43#define DBG(x...) \
44 pr_debug(DRIVER_NAME ": " x)
45#define DBGF(f, x...) \
46 pr_debug(DRIVER_NAME " [%s()]: " f, __func__ , ##x)
47
48
49
50
51
52#ifdef CONFIG_PNP
53
54static const struct pnp_device_id pnp_dev_table[] = {
55 { "WEC0517", 0 },
56 { "WEC0518", 0 },
57 { "", 0 },
58};
59
60MODULE_DEVICE_TABLE(pnp, pnp_dev_table);
61
62#endif
63
64static const int config_ports[] = { 0x2E, 0x4E };
65static const int unlock_codes[] = { 0x83, 0x87 };
66
67static const int valid_ids[] = {
68 0x7112,
69};
70
71#ifdef CONFIG_PNP
72static unsigned int param_nopnp = 0;
73#else
74static const unsigned int param_nopnp = 1;
75#endif
76static unsigned int param_io = 0x248;
77static unsigned int param_irq = 6;
78static int param_dma = 2;
79
80
81
82
83
84static inline void wbsd_unlock_config(struct wbsd_host *host)
85{
86 BUG_ON(host->config == 0);
87
88 outb(host->unlock_code, host->config);
89 outb(host->unlock_code, host->config);
90}
91
92static inline void wbsd_lock_config(struct wbsd_host *host)
93{
94 BUG_ON(host->config == 0);
95
96 outb(LOCK_CODE, host->config);
97}
98
99static inline void wbsd_write_config(struct wbsd_host *host, u8 reg, u8 value)
100{
101 BUG_ON(host->config == 0);
102
103 outb(reg, host->config);
104 outb(value, host->config + 1);
105}
106
107static inline u8 wbsd_read_config(struct wbsd_host *host, u8 reg)
108{
109 BUG_ON(host->config == 0);
110
111 outb(reg, host->config);
112 return inb(host->config + 1);
113}
114
115static inline void wbsd_write_index(struct wbsd_host *host, u8 index, u8 value)
116{
117 outb(index, host->base + WBSD_IDXR);
118 outb(value, host->base + WBSD_DATAR);
119}
120
121static inline u8 wbsd_read_index(struct wbsd_host *host, u8 index)
122{
123 outb(index, host->base + WBSD_IDXR);
124 return inb(host->base + WBSD_DATAR);
125}
126
127
128
129
130
131static void wbsd_init_device(struct wbsd_host *host)
132{
133 u8 setup, ier;
134
135
136
137
138 setup = wbsd_read_index(host, WBSD_IDX_SETUP);
139 setup |= WBSD_FIFO_RESET | WBSD_SOFT_RESET;
140 wbsd_write_index(host, WBSD_IDX_SETUP, setup);
141
142
143
144
145 setup &= ~WBSD_DAT3_H;
146 wbsd_write_index(host, WBSD_IDX_SETUP, setup);
147 host->flags &= ~WBSD_FIGNORE_DETECT;
148
149
150
151
152 host->clk = wbsd_read_index(host, WBSD_IDX_CLK);
153
154
155
156
157 outb(WBSD_POWER_N, host->base + WBSD_CSR);
158
159
160
161
162 wbsd_write_index(host, WBSD_IDX_TAAC, 0x7F);
163
164
165
166
167 if (inb(host->base + WBSD_CSR) & WBSD_CARDPRESENT)
168 host->flags |= WBSD_FCARD_PRESENT;
169 else
170 host->flags &= ~WBSD_FCARD_PRESENT;
171
172
173
174
175 ier = 0;
176 ier |= WBSD_EINT_CARD;
177 ier |= WBSD_EINT_FIFO_THRE;
178 ier |= WBSD_EINT_CRC;
179 ier |= WBSD_EINT_TIMEOUT;
180 ier |= WBSD_EINT_TC;
181
182 outb(ier, host->base + WBSD_EIR);
183
184
185
186
187 inb(host->base + WBSD_ISR);
188}
189
190static void wbsd_reset(struct wbsd_host *host)
191{
192 u8 setup;
193
194 pr_err("%s: Resetting chip\n", mmc_hostname(host->mmc));
195
196
197
198
199 setup = wbsd_read_index(host, WBSD_IDX_SETUP);
200 setup |= WBSD_SOFT_RESET;
201 wbsd_write_index(host, WBSD_IDX_SETUP, setup);
202}
203
204static void wbsd_request_end(struct wbsd_host *host, struct mmc_request *mrq)
205{
206 unsigned long dmaflags;
207
208 if (host->dma >= 0) {
209
210
211
212 dmaflags = claim_dma_lock();
213 disable_dma(host->dma);
214 clear_dma_ff(host->dma);
215 release_dma_lock(dmaflags);
216
217
218
219
220 wbsd_write_index(host, WBSD_IDX_DMA, 0);
221 }
222
223 host->mrq = NULL;
224
225
226
227
228 spin_unlock(&host->lock);
229 mmc_request_done(host->mmc, mrq);
230 spin_lock(&host->lock);
231}
232
233
234
235
236
237static inline void wbsd_init_sg(struct wbsd_host *host, struct mmc_data *data)
238{
239
240
241
242 host->cur_sg = data->sg;
243 host->num_sg = data->sg_len;
244
245 host->offset = 0;
246 host->remain = host->cur_sg->length;
247}
248
249static inline int wbsd_next_sg(struct wbsd_host *host)
250{
251
252
253
254 host->cur_sg++;
255 host->num_sg--;
256
257
258
259
260 if (host->num_sg > 0) {
261 host->offset = 0;
262 host->remain = host->cur_sg->length;
263 }
264
265 return host->num_sg;
266}
267
268static inline char *wbsd_map_sg(struct wbsd_host *host)
269{
270 return kmap_atomic(sg_page(host->cur_sg)) + host->cur_sg->offset;
271}
272
273static inline void wbsd_sg_to_dma(struct wbsd_host *host, struct mmc_data *data)
274{
275 size_t len = 0;
276 int i;
277
278 for (i = 0; i < data->sg_len; i++)
279 len += data->sg[i].length;
280 sg_copy_to_buffer(data->sg, data->sg_len, host->dma_buffer, len);
281}
282
283static inline void wbsd_dma_to_sg(struct wbsd_host *host, struct mmc_data *data)
284{
285 size_t len = 0;
286 int i;
287
288 for (i = 0; i < data->sg_len; i++)
289 len += data->sg[i].length;
290 sg_copy_from_buffer(data->sg, data->sg_len, host->dma_buffer, len);
291}
292
293
294
295
296
297static inline void wbsd_get_short_reply(struct wbsd_host *host,
298 struct mmc_command *cmd)
299{
300
301
302
303 if (wbsd_read_index(host, WBSD_IDX_RSPLEN) != WBSD_RSP_SHORT) {
304 cmd->error = -EILSEQ;
305 return;
306 }
307
308 cmd->resp[0] = wbsd_read_index(host, WBSD_IDX_RESP12) << 24;
309 cmd->resp[0] |= wbsd_read_index(host, WBSD_IDX_RESP13) << 16;
310 cmd->resp[0] |= wbsd_read_index(host, WBSD_IDX_RESP14) << 8;
311 cmd->resp[0] |= wbsd_read_index(host, WBSD_IDX_RESP15) << 0;
312 cmd->resp[1] = wbsd_read_index(host, WBSD_IDX_RESP16) << 24;
313}
314
315static inline void wbsd_get_long_reply(struct wbsd_host *host,
316 struct mmc_command *cmd)
317{
318 int i;
319
320
321
322
323 if (wbsd_read_index(host, WBSD_IDX_RSPLEN) != WBSD_RSP_LONG) {
324 cmd->error = -EILSEQ;
325 return;
326 }
327
328 for (i = 0; i < 4; i++) {
329 cmd->resp[i] =
330 wbsd_read_index(host, WBSD_IDX_RESP1 + i * 4) << 24;
331 cmd->resp[i] |=
332 wbsd_read_index(host, WBSD_IDX_RESP2 + i * 4) << 16;
333 cmd->resp[i] |=
334 wbsd_read_index(host, WBSD_IDX_RESP3 + i * 4) << 8;
335 cmd->resp[i] |=
336 wbsd_read_index(host, WBSD_IDX_RESP4 + i * 4) << 0;
337 }
338}
339
340static void wbsd_send_command(struct wbsd_host *host, struct mmc_command *cmd)
341{
342 int i;
343 u8 status, isr;
344
345
346
347
348
349
350 host->isr = 0;
351
352
353
354
355 outb(cmd->opcode, host->base + WBSD_CMDR);
356 for (i = 3; i >= 0; i--)
357 outb((cmd->arg >> (i * 8)) & 0xff, host->base + WBSD_CMDR);
358
359 cmd->error = 0;
360
361
362
363
364 do {
365 status = wbsd_read_index(host, WBSD_IDX_STATUS);
366 } while (status & WBSD_CARDTRAFFIC);
367
368
369
370
371 if (cmd->flags & MMC_RSP_PRESENT) {
372
373
374
375 isr = host->isr;
376
377
378 if (isr & WBSD_INT_CARD)
379 cmd->error = -ENOMEDIUM;
380
381 else if (isr & WBSD_INT_TIMEOUT)
382 cmd->error = -ETIMEDOUT;
383
384 else if ((cmd->flags & MMC_RSP_CRC) && (isr & WBSD_INT_CRC))
385 cmd->error = -EILSEQ;
386
387 else {
388 if (cmd->flags & MMC_RSP_136)
389 wbsd_get_long_reply(host, cmd);
390 else
391 wbsd_get_short_reply(host, cmd);
392 }
393 }
394}
395
396
397
398
399
400static void wbsd_empty_fifo(struct wbsd_host *host)
401{
402 struct mmc_data *data = host->mrq->cmd->data;
403 char *buffer;
404 int i, idx, fsr, fifo;
405
406
407
408
409 if (host->num_sg == 0)
410 return;
411
412 buffer = wbsd_map_sg(host) + host->offset;
413 idx = 0;
414
415
416
417
418
419 while (!((fsr = inb(host->base + WBSD_FSR)) & WBSD_FIFO_EMPTY)) {
420
421
422
423
424 if (fsr & WBSD_FIFO_FULL)
425 fifo = 16;
426 else if (fsr & WBSD_FIFO_FUTHRE)
427 fifo = 8;
428 else
429 fifo = 1;
430
431 for (i = 0; i < fifo; i++) {
432 buffer[idx++] = inb(host->base + WBSD_DFR);
433 host->offset++;
434 host->remain--;
435
436 data->bytes_xfered++;
437
438
439
440
441 if (host->remain == 0) {
442 kunmap_atomic(buffer);
443
444
445
446 if (!wbsd_next_sg(host))
447 return;
448
449 buffer = wbsd_map_sg(host);
450 idx = 0;
451 }
452 }
453 }
454 kunmap_atomic(buffer);
455
456
457
458
459
460
461 if ((data->blocks * data->blksz - data->bytes_xfered) < 16)
462 tasklet_schedule(&host->fifo_tasklet);
463}
464
465static void wbsd_fill_fifo(struct wbsd_host *host)
466{
467 struct mmc_data *data = host->mrq->cmd->data;
468 char *buffer;
469 int i, idx, fsr, fifo;
470
471
472
473
474
475 if (host->num_sg == 0)
476 return;
477
478 buffer = wbsd_map_sg(host) + host->offset;
479 idx = 0;
480
481
482
483
484
485 while (!((fsr = inb(host->base + WBSD_FSR)) & WBSD_FIFO_FULL)) {
486
487
488
489
490 if (fsr & WBSD_FIFO_EMPTY)
491 fifo = 0;
492 else if (fsr & WBSD_FIFO_EMTHRE)
493 fifo = 8;
494 else
495 fifo = 15;
496
497 for (i = 16; i > fifo; i--) {
498 outb(buffer[idx], host->base + WBSD_DFR);
499 host->offset++;
500 host->remain--;
501
502 data->bytes_xfered++;
503
504
505
506
507 if (host->remain == 0) {
508 kunmap_atomic(buffer);
509
510
511
512 if (!wbsd_next_sg(host))
513 return;
514
515 buffer = wbsd_map_sg(host);
516 idx = 0;
517 }
518 }
519 }
520 kunmap_atomic(buffer);
521
522
523
524
525
526
527 tasklet_schedule(&host->fifo_tasklet);
528}
529
530static void wbsd_prepare_data(struct wbsd_host *host, struct mmc_data *data)
531{
532 u16 blksize;
533 u8 setup;
534 unsigned long dmaflags;
535 unsigned int size;
536
537
538
539
540 size = data->blocks * data->blksz;
541
542
543
544
545
546 if (data->timeout_ns > 127000000)
547 wbsd_write_index(host, WBSD_IDX_TAAC, 127);
548 else {
549 wbsd_write_index(host, WBSD_IDX_TAAC,
550 data->timeout_ns / 1000000);
551 }
552
553 if (data->timeout_clks > 255)
554 wbsd_write_index(host, WBSD_IDX_NSAC, 255);
555 else
556 wbsd_write_index(host, WBSD_IDX_NSAC, data->timeout_clks);
557
558
559
560
561
562
563
564
565
566 if (host->bus_width == MMC_BUS_WIDTH_1) {
567 blksize = data->blksz + 2;
568
569 wbsd_write_index(host, WBSD_IDX_PBSMSB, (blksize >> 4) & 0xF0);
570 wbsd_write_index(host, WBSD_IDX_PBSLSB, blksize & 0xFF);
571 } else if (host->bus_width == MMC_BUS_WIDTH_4) {
572 blksize = data->blksz + 2 * 4;
573
574 wbsd_write_index(host, WBSD_IDX_PBSMSB,
575 ((blksize >> 4) & 0xF0) | WBSD_DATA_WIDTH);
576 wbsd_write_index(host, WBSD_IDX_PBSLSB, blksize & 0xFF);
577 } else {
578 data->error = -EINVAL;
579 return;
580 }
581
582
583
584
585
586
587 setup = wbsd_read_index(host, WBSD_IDX_SETUP);
588 setup |= WBSD_FIFO_RESET;
589 wbsd_write_index(host, WBSD_IDX_SETUP, setup);
590
591
592
593
594 if (host->dma >= 0) {
595
596
597
598 BUG_ON(size > 0x10000);
599 if (size > 0x10000) {
600 data->error = -EINVAL;
601 return;
602 }
603
604
605
606
607
608 if (data->flags & MMC_DATA_WRITE)
609 wbsd_sg_to_dma(host, data);
610
611
612
613
614 dmaflags = claim_dma_lock();
615 disable_dma(host->dma);
616 clear_dma_ff(host->dma);
617 if (data->flags & MMC_DATA_READ)
618 set_dma_mode(host->dma, DMA_MODE_READ & ~0x40);
619 else
620 set_dma_mode(host->dma, DMA_MODE_WRITE & ~0x40);
621 set_dma_addr(host->dma, host->dma_addr);
622 set_dma_count(host->dma, size);
623
624 enable_dma(host->dma);
625 release_dma_lock(dmaflags);
626
627
628
629
630 wbsd_write_index(host, WBSD_IDX_DMA, WBSD_DMA_ENABLE);
631 } else {
632
633
634
635
636 host->firsterr = 1;
637
638
639
640
641 wbsd_init_sg(host, data);
642
643
644
645
646 wbsd_write_index(host, WBSD_IDX_DMA, 0);
647
648
649
650
651
652 if (data->flags & MMC_DATA_READ) {
653 wbsd_write_index(host, WBSD_IDX_FIFOEN,
654 WBSD_FIFOEN_FULL | 8);
655 } else {
656 wbsd_write_index(host, WBSD_IDX_FIFOEN,
657 WBSD_FIFOEN_EMPTY | 8);
658 wbsd_fill_fifo(host);
659 }
660 }
661
662 data->error = 0;
663}
664
665static void wbsd_finish_data(struct wbsd_host *host, struct mmc_data *data)
666{
667 unsigned long dmaflags;
668 int count;
669 u8 status;
670
671 WARN_ON(host->mrq == NULL);
672
673
674
675
676 if (data->stop)
677 wbsd_send_command(host, data->stop);
678
679
680
681
682
683 do {
684 status = wbsd_read_index(host, WBSD_IDX_STATUS);
685 } while (status & (WBSD_BLOCK_READ | WBSD_BLOCK_WRITE));
686
687
688
689
690 if (host->dma >= 0) {
691
692
693
694 wbsd_write_index(host, WBSD_IDX_DMA, 0);
695
696
697
698
699 dmaflags = claim_dma_lock();
700 disable_dma(host->dma);
701 clear_dma_ff(host->dma);
702 count = get_dma_residue(host->dma);
703 release_dma_lock(dmaflags);
704
705 data->bytes_xfered = host->mrq->data->blocks *
706 host->mrq->data->blksz - count;
707 data->bytes_xfered -= data->bytes_xfered % data->blksz;
708
709
710
711
712 if (count) {
713 pr_err("%s: Incomplete DMA transfer. "
714 "%d bytes left.\n",
715 mmc_hostname(host->mmc), count);
716
717 if (!data->error)
718 data->error = -EIO;
719 } else {
720
721
722
723
724 if (data->flags & MMC_DATA_READ)
725 wbsd_dma_to_sg(host, data);
726 }
727
728 if (data->error) {
729 if (data->bytes_xfered)
730 data->bytes_xfered -= data->blksz;
731 }
732 }
733
734 wbsd_request_end(host, host->mrq);
735}
736
737
738
739
740
741
742
743static void wbsd_request(struct mmc_host *mmc, struct mmc_request *mrq)
744{
745 struct wbsd_host *host = mmc_priv(mmc);
746 struct mmc_command *cmd;
747
748
749
750
751 spin_lock_bh(&host->lock);
752
753 BUG_ON(host->mrq != NULL);
754
755 cmd = mrq->cmd;
756
757 host->mrq = mrq;
758
759
760
761
762 if (!(host->flags & WBSD_FCARD_PRESENT)) {
763 cmd->error = -ENOMEDIUM;
764 goto done;
765 }
766
767 if (cmd->data) {
768
769
770
771
772
773
774 switch (cmd->opcode) {
775 case SD_SWITCH_VOLTAGE:
776 case MMC_READ_SINGLE_BLOCK:
777 case MMC_READ_MULTIPLE_BLOCK:
778 case MMC_WRITE_DAT_UNTIL_STOP:
779 case MMC_WRITE_BLOCK:
780 case MMC_WRITE_MULTIPLE_BLOCK:
781 case MMC_PROGRAM_CID:
782 case MMC_PROGRAM_CSD:
783 case MMC_SEND_WRITE_PROT:
784 case MMC_LOCK_UNLOCK:
785 case MMC_GEN_CMD:
786 break;
787
788
789
790 case SD_APP_SEND_SCR:
791 break;
792
793 default:
794 pr_warn("%s: Data command %d is not supported by this controller\n",
795 mmc_hostname(host->mmc), cmd->opcode);
796 cmd->error = -EINVAL;
797
798 goto done;
799 }
800 }
801
802
803
804
805 if (cmd->data) {
806 wbsd_prepare_data(host, cmd->data);
807
808 if (cmd->data->error)
809 goto done;
810 }
811
812 wbsd_send_command(host, cmd);
813
814
815
816
817
818
819 if (cmd->data && !cmd->error) {
820
821
822
823 if (host->dma == -1)
824 tasklet_schedule(&host->fifo_tasklet);
825
826 spin_unlock_bh(&host->lock);
827
828 return;
829 }
830
831done:
832 wbsd_request_end(host, mrq);
833
834 spin_unlock_bh(&host->lock);
835}
836
837static void wbsd_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
838{
839 struct wbsd_host *host = mmc_priv(mmc);
840 u8 clk, setup, pwr;
841
842 spin_lock_bh(&host->lock);
843
844
845
846
847
848 if (ios->power_mode == MMC_POWER_OFF)
849 wbsd_init_device(host);
850
851 if (ios->clock >= 24000000)
852 clk = WBSD_CLK_24M;
853 else if (ios->clock >= 16000000)
854 clk = WBSD_CLK_16M;
855 else if (ios->clock >= 12000000)
856 clk = WBSD_CLK_12M;
857 else
858 clk = WBSD_CLK_375K;
859
860
861
862
863
864 if (clk != host->clk) {
865 wbsd_write_index(host, WBSD_IDX_CLK, clk);
866 host->clk = clk;
867 }
868
869
870
871
872 if (ios->power_mode != MMC_POWER_OFF) {
873 pwr = inb(host->base + WBSD_CSR);
874 pwr &= ~WBSD_POWER_N;
875 outb(pwr, host->base + WBSD_CSR);
876 }
877
878
879
880
881
882
883 setup = wbsd_read_index(host, WBSD_IDX_SETUP);
884 if (ios->chip_select == MMC_CS_HIGH) {
885 BUG_ON(ios->bus_width != MMC_BUS_WIDTH_1);
886 setup |= WBSD_DAT3_H;
887 host->flags |= WBSD_FIGNORE_DETECT;
888 } else {
889 if (setup & WBSD_DAT3_H) {
890 setup &= ~WBSD_DAT3_H;
891
892
893
894
895
896 mod_timer(&host->ignore_timer, jiffies + HZ / 100);
897 }
898 }
899 wbsd_write_index(host, WBSD_IDX_SETUP, setup);
900
901
902
903
904
905 host->bus_width = ios->bus_width;
906
907 spin_unlock_bh(&host->lock);
908}
909
910static int wbsd_get_ro(struct mmc_host *mmc)
911{
912 struct wbsd_host *host = mmc_priv(mmc);
913 u8 csr;
914
915 spin_lock_bh(&host->lock);
916
917 csr = inb(host->base + WBSD_CSR);
918 csr |= WBSD_MSLED;
919 outb(csr, host->base + WBSD_CSR);
920
921 mdelay(1);
922
923 csr = inb(host->base + WBSD_CSR);
924 csr &= ~WBSD_MSLED;
925 outb(csr, host->base + WBSD_CSR);
926
927 spin_unlock_bh(&host->lock);
928
929 return !!(csr & WBSD_WRPT);
930}
931
932static const struct mmc_host_ops wbsd_ops = {
933 .request = wbsd_request,
934 .set_ios = wbsd_set_ios,
935 .get_ro = wbsd_get_ro,
936};
937
938
939
940
941
942
943
944
945
946
947
948static void wbsd_reset_ignore(struct timer_list *t)
949{
950 struct wbsd_host *host = from_timer(host, t, ignore_timer);
951
952 BUG_ON(host == NULL);
953
954 DBG("Resetting card detection ignore\n");
955
956 spin_lock_bh(&host->lock);
957
958 host->flags &= ~WBSD_FIGNORE_DETECT;
959
960
961
962
963
964 tasklet_schedule(&host->card_tasklet);
965
966 spin_unlock_bh(&host->lock);
967}
968
969
970
971
972
973static inline struct mmc_data *wbsd_get_data(struct wbsd_host *host)
974{
975 WARN_ON(!host->mrq);
976 if (!host->mrq)
977 return NULL;
978
979 WARN_ON(!host->mrq->cmd);
980 if (!host->mrq->cmd)
981 return NULL;
982
983 WARN_ON(!host->mrq->cmd->data);
984 if (!host->mrq->cmd->data)
985 return NULL;
986
987 return host->mrq->cmd->data;
988}
989
990static void wbsd_tasklet_card(struct tasklet_struct *t)
991{
992 struct wbsd_host *host = from_tasklet(host, t, card_tasklet);
993 u8 csr;
994 int delay = -1;
995
996 spin_lock(&host->lock);
997
998 if (host->flags & WBSD_FIGNORE_DETECT) {
999 spin_unlock(&host->lock);
1000 return;
1001 }
1002
1003 csr = inb(host->base + WBSD_CSR);
1004 WARN_ON(csr == 0xff);
1005
1006 if (csr & WBSD_CARDPRESENT) {
1007 if (!(host->flags & WBSD_FCARD_PRESENT)) {
1008 DBG("Card inserted\n");
1009 host->flags |= WBSD_FCARD_PRESENT;
1010
1011 delay = 500;
1012 }
1013 } else if (host->flags & WBSD_FCARD_PRESENT) {
1014 DBG("Card removed\n");
1015 host->flags &= ~WBSD_FCARD_PRESENT;
1016
1017 if (host->mrq) {
1018 pr_err("%s: Card removed during transfer!\n",
1019 mmc_hostname(host->mmc));
1020 wbsd_reset(host);
1021
1022 host->mrq->cmd->error = -ENOMEDIUM;
1023 tasklet_schedule(&host->finish_tasklet);
1024 }
1025
1026 delay = 0;
1027 }
1028
1029
1030
1031
1032
1033 spin_unlock(&host->lock);
1034
1035 if (delay != -1)
1036 mmc_detect_change(host->mmc, msecs_to_jiffies(delay));
1037}
1038
1039static void wbsd_tasklet_fifo(struct tasklet_struct *t)
1040{
1041 struct wbsd_host *host = from_tasklet(host, t, fifo_tasklet);
1042 struct mmc_data *data;
1043
1044 spin_lock(&host->lock);
1045
1046 if (!host->mrq)
1047 goto end;
1048
1049 data = wbsd_get_data(host);
1050 if (!data)
1051 goto end;
1052
1053 if (data->flags & MMC_DATA_WRITE)
1054 wbsd_fill_fifo(host);
1055 else
1056 wbsd_empty_fifo(host);
1057
1058
1059
1060
1061 if (host->num_sg == 0) {
1062 wbsd_write_index(host, WBSD_IDX_FIFOEN, 0);
1063 tasklet_schedule(&host->finish_tasklet);
1064 }
1065
1066end:
1067 spin_unlock(&host->lock);
1068}
1069
1070static void wbsd_tasklet_crc(struct tasklet_struct *t)
1071{
1072 struct wbsd_host *host = from_tasklet(host, t, crc_tasklet);
1073 struct mmc_data *data;
1074
1075 spin_lock(&host->lock);
1076
1077 if (!host->mrq)
1078 goto end;
1079
1080 data = wbsd_get_data(host);
1081 if (!data)
1082 goto end;
1083
1084 DBGF("CRC error\n");
1085
1086 data->error = -EILSEQ;
1087
1088 tasklet_schedule(&host->finish_tasklet);
1089
1090end:
1091 spin_unlock(&host->lock);
1092}
1093
1094static void wbsd_tasklet_timeout(struct tasklet_struct *t)
1095{
1096 struct wbsd_host *host = from_tasklet(host, t, timeout_tasklet);
1097 struct mmc_data *data;
1098
1099 spin_lock(&host->lock);
1100
1101 if (!host->mrq)
1102 goto end;
1103
1104 data = wbsd_get_data(host);
1105 if (!data)
1106 goto end;
1107
1108 DBGF("Timeout\n");
1109
1110 data->error = -ETIMEDOUT;
1111
1112 tasklet_schedule(&host->finish_tasklet);
1113
1114end:
1115 spin_unlock(&host->lock);
1116}
1117
1118static void wbsd_tasklet_finish(struct tasklet_struct *t)
1119{
1120 struct wbsd_host *host = from_tasklet(host, t, finish_tasklet);
1121 struct mmc_data *data;
1122
1123 spin_lock(&host->lock);
1124
1125 WARN_ON(!host->mrq);
1126 if (!host->mrq)
1127 goto end;
1128
1129 data = wbsd_get_data(host);
1130 if (!data)
1131 goto end;
1132
1133 wbsd_finish_data(host, data);
1134
1135end:
1136 spin_unlock(&host->lock);
1137}
1138
1139
1140
1141
1142
1143static irqreturn_t wbsd_irq(int irq, void *dev_id)
1144{
1145 struct wbsd_host *host = dev_id;
1146 int isr;
1147
1148 isr = inb(host->base + WBSD_ISR);
1149
1150
1151
1152
1153 if (isr == 0xff || isr == 0x00)
1154 return IRQ_NONE;
1155
1156 host->isr |= isr;
1157
1158
1159
1160
1161 if (isr & WBSD_INT_CARD)
1162 tasklet_schedule(&host->card_tasklet);
1163 if (isr & WBSD_INT_FIFO_THRE)
1164 tasklet_schedule(&host->fifo_tasklet);
1165 if (isr & WBSD_INT_CRC)
1166 tasklet_hi_schedule(&host->crc_tasklet);
1167 if (isr & WBSD_INT_TIMEOUT)
1168 tasklet_hi_schedule(&host->timeout_tasklet);
1169 if (isr & WBSD_INT_TC)
1170 tasklet_schedule(&host->finish_tasklet);
1171
1172 return IRQ_HANDLED;
1173}
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185static int wbsd_alloc_mmc(struct device *dev)
1186{
1187 struct mmc_host *mmc;
1188 struct wbsd_host *host;
1189
1190
1191
1192
1193 mmc = mmc_alloc_host(sizeof(struct wbsd_host), dev);
1194 if (!mmc)
1195 return -ENOMEM;
1196
1197 host = mmc_priv(mmc);
1198 host->mmc = mmc;
1199
1200 host->dma = -1;
1201
1202
1203
1204
1205 mmc->ops = &wbsd_ops;
1206 mmc->f_min = 375000;
1207 mmc->f_max = 24000000;
1208 mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
1209 mmc->caps = MMC_CAP_4_BIT_DATA;
1210
1211 spin_lock_init(&host->lock);
1212
1213
1214
1215
1216 timer_setup(&host->ignore_timer, wbsd_reset_ignore, 0);
1217
1218
1219
1220
1221
1222 mmc->max_segs = 128;
1223
1224
1225
1226
1227 mmc->max_req_size = 65536;
1228
1229
1230
1231
1232
1233 mmc->max_seg_size = mmc->max_req_size;
1234
1235
1236
1237
1238
1239 mmc->max_blk_size = 4087;
1240
1241
1242
1243
1244
1245 mmc->max_blk_count = mmc->max_req_size;
1246
1247 dev_set_drvdata(dev, mmc);
1248
1249 return 0;
1250}
1251
1252static void wbsd_free_mmc(struct device *dev)
1253{
1254 struct mmc_host *mmc;
1255 struct wbsd_host *host;
1256
1257 mmc = dev_get_drvdata(dev);
1258 if (!mmc)
1259 return;
1260
1261 host = mmc_priv(mmc);
1262 BUG_ON(host == NULL);
1263
1264 del_timer_sync(&host->ignore_timer);
1265
1266 mmc_free_host(mmc);
1267
1268 dev_set_drvdata(dev, NULL);
1269}
1270
1271
1272
1273
1274
1275static int wbsd_scan(struct wbsd_host *host)
1276{
1277 int i, j, k;
1278 int id;
1279
1280
1281
1282
1283
1284 for (i = 0; i < ARRAY_SIZE(config_ports); i++) {
1285 if (!request_region(config_ports[i], 2, DRIVER_NAME))
1286 continue;
1287
1288 for (j = 0; j < ARRAY_SIZE(unlock_codes); j++) {
1289 id = 0xFFFF;
1290
1291 host->config = config_ports[i];
1292 host->unlock_code = unlock_codes[j];
1293
1294 wbsd_unlock_config(host);
1295
1296 outb(WBSD_CONF_ID_HI, config_ports[i]);
1297 id = inb(config_ports[i] + 1) << 8;
1298
1299 outb(WBSD_CONF_ID_LO, config_ports[i]);
1300 id |= inb(config_ports[i] + 1);
1301
1302 wbsd_lock_config(host);
1303
1304 for (k = 0; k < ARRAY_SIZE(valid_ids); k++) {
1305 if (id == valid_ids[k]) {
1306 host->chip_id = id;
1307
1308 return 0;
1309 }
1310 }
1311
1312 if (id != 0xFFFF) {
1313 DBG("Unknown hardware (id %x) found at %x\n",
1314 id, config_ports[i]);
1315 }
1316 }
1317
1318 release_region(config_ports[i], 2);
1319 }
1320
1321 host->config = 0;
1322 host->unlock_code = 0;
1323
1324 return -ENODEV;
1325}
1326
1327
1328
1329
1330
1331static int wbsd_request_region(struct wbsd_host *host, int base)
1332{
1333 if (base & 0x7)
1334 return -EINVAL;
1335
1336 if (!request_region(base, 8, DRIVER_NAME))
1337 return -EIO;
1338
1339 host->base = base;
1340
1341 return 0;
1342}
1343
1344static void wbsd_release_regions(struct wbsd_host *host)
1345{
1346 if (host->base)
1347 release_region(host->base, 8);
1348
1349 host->base = 0;
1350
1351 if (host->config)
1352 release_region(host->config, 2);
1353
1354 host->config = 0;
1355}
1356
1357
1358
1359
1360
1361static void wbsd_request_dma(struct wbsd_host *host, int dma)
1362{
1363 if (dma < 0)
1364 return;
1365
1366 if (request_dma(dma, DRIVER_NAME))
1367 goto err;
1368
1369
1370
1371
1372
1373 host->dma_buffer = kmalloc(WBSD_DMA_SIZE,
1374 GFP_NOIO | GFP_DMA | __GFP_RETRY_MAYFAIL | __GFP_NOWARN);
1375 if (!host->dma_buffer)
1376 goto free;
1377
1378
1379
1380
1381 host->dma_addr = dma_map_single(mmc_dev(host->mmc), host->dma_buffer,
1382 WBSD_DMA_SIZE, DMA_BIDIRECTIONAL);
1383 if (dma_mapping_error(mmc_dev(host->mmc), host->dma_addr))
1384 goto kfree;
1385
1386
1387
1388
1389 if ((host->dma_addr & 0xffff) != 0)
1390 goto unmap;
1391
1392
1393
1394 else if (host->dma_addr >= 0x1000000)
1395 goto unmap;
1396
1397 host->dma = dma;
1398
1399 return;
1400
1401unmap:
1402
1403
1404
1405 BUG_ON(1);
1406
1407 dma_unmap_single(mmc_dev(host->mmc), host->dma_addr,
1408 WBSD_DMA_SIZE, DMA_BIDIRECTIONAL);
1409 host->dma_addr = 0;
1410
1411kfree:
1412 kfree(host->dma_buffer);
1413 host->dma_buffer = NULL;
1414
1415free:
1416 free_dma(dma);
1417
1418err:
1419 pr_warn(DRIVER_NAME ": Unable to allocate DMA %d - falling back on FIFO\n",
1420 dma);
1421}
1422
1423static void wbsd_release_dma(struct wbsd_host *host)
1424{
1425
1426
1427
1428 if (host->dma_buffer) {
1429 dma_unmap_single(mmc_dev(host->mmc), host->dma_addr,
1430 WBSD_DMA_SIZE, DMA_BIDIRECTIONAL);
1431 kfree(host->dma_buffer);
1432 }
1433 if (host->dma >= 0)
1434 free_dma(host->dma);
1435
1436 host->dma = -1;
1437 host->dma_buffer = NULL;
1438 host->dma_addr = 0;
1439}
1440
1441
1442
1443
1444
1445static int wbsd_request_irq(struct wbsd_host *host, int irq)
1446{
1447 int ret;
1448
1449
1450
1451
1452 tasklet_setup(&host->card_tasklet, wbsd_tasklet_card);
1453 tasklet_setup(&host->fifo_tasklet, wbsd_tasklet_fifo);
1454 tasklet_setup(&host->crc_tasklet, wbsd_tasklet_crc);
1455 tasklet_setup(&host->timeout_tasklet, wbsd_tasklet_timeout);
1456 tasklet_setup(&host->finish_tasklet, wbsd_tasklet_finish);
1457
1458
1459
1460
1461 ret = request_irq(irq, wbsd_irq, IRQF_SHARED, DRIVER_NAME, host);
1462 if (ret)
1463 return ret;
1464
1465 host->irq = irq;
1466
1467 return 0;
1468}
1469
1470static void wbsd_release_irq(struct wbsd_host *host)
1471{
1472 if (!host->irq)
1473 return;
1474
1475 free_irq(host->irq, host);
1476
1477 host->irq = 0;
1478
1479 tasklet_kill(&host->card_tasklet);
1480 tasklet_kill(&host->fifo_tasklet);
1481 tasklet_kill(&host->crc_tasklet);
1482 tasklet_kill(&host->timeout_tasklet);
1483 tasklet_kill(&host->finish_tasklet);
1484}
1485
1486
1487
1488
1489
1490static int wbsd_request_resources(struct wbsd_host *host,
1491 int base, int irq, int dma)
1492{
1493 int ret;
1494
1495
1496
1497
1498 ret = wbsd_request_region(host, base);
1499 if (ret)
1500 return ret;
1501
1502
1503
1504
1505 ret = wbsd_request_irq(host, irq);
1506 if (ret)
1507 return ret;
1508
1509
1510
1511
1512 wbsd_request_dma(host, dma);
1513
1514 return 0;
1515}
1516
1517
1518
1519
1520
1521static void wbsd_release_resources(struct wbsd_host *host)
1522{
1523 wbsd_release_dma(host);
1524 wbsd_release_irq(host);
1525 wbsd_release_regions(host);
1526}
1527
1528
1529
1530
1531
1532static void wbsd_chip_config(struct wbsd_host *host)
1533{
1534 wbsd_unlock_config(host);
1535
1536
1537
1538
1539 wbsd_write_config(host, WBSD_CONF_SWRST, 1);
1540 wbsd_write_config(host, WBSD_CONF_SWRST, 0);
1541
1542
1543
1544
1545 wbsd_write_config(host, WBSD_CONF_DEVICE, DEVICE_SD);
1546
1547
1548
1549
1550 wbsd_write_config(host, WBSD_CONF_PINS, WBSD_PINS_DETECT_GP11);
1551
1552
1553
1554
1555 wbsd_write_config(host, WBSD_CONF_PORT_HI, host->base >> 8);
1556 wbsd_write_config(host, WBSD_CONF_PORT_LO, host->base & 0xff);
1557
1558 wbsd_write_config(host, WBSD_CONF_IRQ, host->irq);
1559
1560 if (host->dma >= 0)
1561 wbsd_write_config(host, WBSD_CONF_DRQ, host->dma);
1562
1563
1564
1565
1566 wbsd_write_config(host, WBSD_CONF_ENABLE, 1);
1567 wbsd_write_config(host, WBSD_CONF_POWER, 0x20);
1568
1569 wbsd_lock_config(host);
1570}
1571
1572
1573
1574
1575
1576static int wbsd_chip_validate(struct wbsd_host *host)
1577{
1578 int base, irq, dma;
1579
1580 wbsd_unlock_config(host);
1581
1582
1583
1584
1585 wbsd_write_config(host, WBSD_CONF_DEVICE, DEVICE_SD);
1586
1587
1588
1589
1590 base = wbsd_read_config(host, WBSD_CONF_PORT_HI) << 8;
1591 base |= wbsd_read_config(host, WBSD_CONF_PORT_LO);
1592
1593 irq = wbsd_read_config(host, WBSD_CONF_IRQ);
1594
1595 dma = wbsd_read_config(host, WBSD_CONF_DRQ);
1596
1597 wbsd_lock_config(host);
1598
1599
1600
1601
1602 if (base != host->base)
1603 return 0;
1604 if (irq != host->irq)
1605 return 0;
1606 if ((dma != host->dma) && (host->dma != -1))
1607 return 0;
1608
1609 return 1;
1610}
1611
1612
1613
1614
1615
1616static void wbsd_chip_poweroff(struct wbsd_host *host)
1617{
1618 wbsd_unlock_config(host);
1619
1620 wbsd_write_config(host, WBSD_CONF_DEVICE, DEVICE_SD);
1621 wbsd_write_config(host, WBSD_CONF_ENABLE, 0);
1622
1623 wbsd_lock_config(host);
1624}
1625
1626
1627
1628
1629
1630
1631
1632static int wbsd_init(struct device *dev, int base, int irq, int dma,
1633 int pnp)
1634{
1635 struct wbsd_host *host = NULL;
1636 struct mmc_host *mmc = NULL;
1637 int ret;
1638
1639 ret = wbsd_alloc_mmc(dev);
1640 if (ret)
1641 return ret;
1642
1643 mmc = dev_get_drvdata(dev);
1644 host = mmc_priv(mmc);
1645
1646
1647
1648
1649 ret = wbsd_scan(host);
1650 if (ret) {
1651 if (pnp && (ret == -ENODEV)) {
1652 pr_warn(DRIVER_NAME ": Unable to confirm device presence - you may experience lock-ups\n");
1653 } else {
1654 wbsd_free_mmc(dev);
1655 return ret;
1656 }
1657 }
1658
1659
1660
1661
1662 ret = wbsd_request_resources(host, base, irq, dma);
1663 if (ret) {
1664 wbsd_release_resources(host);
1665 wbsd_free_mmc(dev);
1666 return ret;
1667 }
1668
1669
1670
1671
1672 if (pnp) {
1673 if ((host->config != 0) && !wbsd_chip_validate(host)) {
1674 pr_warn(DRIVER_NAME ": PnP active but chip not configured! You probably have a buggy BIOS. Configuring chip manually.\n");
1675 wbsd_chip_config(host);
1676 }
1677 } else
1678 wbsd_chip_config(host);
1679
1680
1681
1682
1683
1684#ifdef CONFIG_PM
1685 if (host->config) {
1686 wbsd_unlock_config(host);
1687 wbsd_write_config(host, WBSD_CONF_PME, 0xA0);
1688 wbsd_lock_config(host);
1689 }
1690#endif
1691
1692
1693
1694 mdelay(5);
1695
1696
1697
1698
1699 wbsd_init_device(host);
1700
1701 mmc_add_host(mmc);
1702
1703 pr_info("%s: W83L51xD", mmc_hostname(mmc));
1704 if (host->chip_id != 0)
1705 printk(" id %x", (int)host->chip_id);
1706 printk(" at 0x%x irq %d", (int)host->base, (int)host->irq);
1707 if (host->dma >= 0)
1708 printk(" dma %d", (int)host->dma);
1709 else
1710 printk(" FIFO");
1711 if (pnp)
1712 printk(" PnP");
1713 printk("\n");
1714
1715 return 0;
1716}
1717
1718static void wbsd_shutdown(struct device *dev, int pnp)
1719{
1720 struct mmc_host *mmc = dev_get_drvdata(dev);
1721 struct wbsd_host *host;
1722
1723 if (!mmc)
1724 return;
1725
1726 host = mmc_priv(mmc);
1727
1728 mmc_remove_host(mmc);
1729
1730
1731
1732
1733 if (!pnp)
1734 wbsd_chip_poweroff(host);
1735
1736 wbsd_release_resources(host);
1737
1738 wbsd_free_mmc(dev);
1739}
1740
1741
1742
1743
1744
1745static int wbsd_probe(struct platform_device *dev)
1746{
1747
1748 return wbsd_init(&dev->dev, param_io, param_irq, param_dma, 0);
1749}
1750
1751static int wbsd_remove(struct platform_device *dev)
1752{
1753 wbsd_shutdown(&dev->dev, 0);
1754
1755 return 0;
1756}
1757
1758
1759
1760
1761
1762#ifdef CONFIG_PNP
1763
1764static int
1765wbsd_pnp_probe(struct pnp_dev *pnpdev, const struct pnp_device_id *dev_id)
1766{
1767 int io, irq, dma;
1768
1769
1770
1771
1772 io = pnp_port_start(pnpdev, 0);
1773 irq = pnp_irq(pnpdev, 0);
1774 if (pnp_dma_valid(pnpdev, 0))
1775 dma = pnp_dma(pnpdev, 0);
1776 else
1777 dma = -1;
1778
1779 DBGF("PnP resources: port %3x irq %d dma %d\n", io, irq, dma);
1780
1781 return wbsd_init(&pnpdev->dev, io, irq, dma, 1);
1782}
1783
1784static void wbsd_pnp_remove(struct pnp_dev *dev)
1785{
1786 wbsd_shutdown(&dev->dev, 1);
1787}
1788
1789#endif
1790
1791
1792
1793
1794
1795#ifdef CONFIG_PM
1796
1797static int wbsd_platform_suspend(struct platform_device *dev,
1798 pm_message_t state)
1799{
1800 struct mmc_host *mmc = platform_get_drvdata(dev);
1801 struct wbsd_host *host;
1802
1803 if (mmc == NULL)
1804 return 0;
1805
1806 DBGF("Suspending...\n");
1807
1808 host = mmc_priv(mmc);
1809
1810 wbsd_chip_poweroff(host);
1811 return 0;
1812}
1813
1814static int wbsd_platform_resume(struct platform_device *dev)
1815{
1816 struct mmc_host *mmc = platform_get_drvdata(dev);
1817 struct wbsd_host *host;
1818
1819 if (mmc == NULL)
1820 return 0;
1821
1822 DBGF("Resuming...\n");
1823
1824 host = mmc_priv(mmc);
1825
1826 wbsd_chip_config(host);
1827
1828
1829
1830
1831 mdelay(5);
1832
1833 wbsd_init_device(host);
1834 return 0;
1835}
1836
1837#ifdef CONFIG_PNP
1838
1839static int wbsd_pnp_suspend(struct pnp_dev *pnp_dev, pm_message_t state)
1840{
1841 struct mmc_host *mmc = dev_get_drvdata(&pnp_dev->dev);
1842
1843 if (mmc == NULL)
1844 return 0;
1845
1846 DBGF("Suspending...\n");
1847 return 0;
1848}
1849
1850static int wbsd_pnp_resume(struct pnp_dev *pnp_dev)
1851{
1852 struct mmc_host *mmc = dev_get_drvdata(&pnp_dev->dev);
1853 struct wbsd_host *host;
1854
1855 if (mmc == NULL)
1856 return 0;
1857
1858 DBGF("Resuming...\n");
1859
1860 host = mmc_priv(mmc);
1861
1862
1863
1864
1865 if (host->config != 0) {
1866 if (!wbsd_chip_validate(host)) {
1867 pr_warn(DRIVER_NAME ": PnP active but chip not configured! You probably have a buggy BIOS. Configuring chip manually.\n");
1868 wbsd_chip_config(host);
1869 }
1870 }
1871
1872
1873
1874
1875 mdelay(5);
1876
1877 wbsd_init_device(host);
1878 return 0;
1879}
1880
1881#endif
1882
1883#else
1884
1885#define wbsd_platform_suspend NULL
1886#define wbsd_platform_resume NULL
1887
1888#define wbsd_pnp_suspend NULL
1889#define wbsd_pnp_resume NULL
1890
1891#endif
1892
1893static struct platform_device *wbsd_device;
1894
1895static struct platform_driver wbsd_driver = {
1896 .probe = wbsd_probe,
1897 .remove = wbsd_remove,
1898
1899 .suspend = wbsd_platform_suspend,
1900 .resume = wbsd_platform_resume,
1901 .driver = {
1902 .name = DRIVER_NAME,
1903 .probe_type = PROBE_PREFER_ASYNCHRONOUS,
1904 },
1905};
1906
1907#ifdef CONFIG_PNP
1908
1909static struct pnp_driver wbsd_pnp_driver = {
1910 .name = DRIVER_NAME,
1911 .id_table = pnp_dev_table,
1912 .probe = wbsd_pnp_probe,
1913 .remove = wbsd_pnp_remove,
1914
1915 .suspend = wbsd_pnp_suspend,
1916 .resume = wbsd_pnp_resume,
1917};
1918
1919#endif
1920
1921
1922
1923
1924
1925static int __init wbsd_drv_init(void)
1926{
1927 int result;
1928
1929 pr_info(DRIVER_NAME
1930 ": Winbond W83L51xD SD/MMC card interface driver\n");
1931 pr_info(DRIVER_NAME ": Copyright(c) Pierre Ossman\n");
1932
1933#ifdef CONFIG_PNP
1934
1935 if (!param_nopnp) {
1936 result = pnp_register_driver(&wbsd_pnp_driver);
1937 if (result < 0)
1938 return result;
1939 }
1940#endif
1941
1942 if (param_nopnp) {
1943 result = platform_driver_register(&wbsd_driver);
1944 if (result < 0)
1945 return result;
1946
1947 wbsd_device = platform_device_alloc(DRIVER_NAME, -1);
1948 if (!wbsd_device) {
1949 platform_driver_unregister(&wbsd_driver);
1950 return -ENOMEM;
1951 }
1952
1953 result = platform_device_add(wbsd_device);
1954 if (result) {
1955 platform_device_put(wbsd_device);
1956 platform_driver_unregister(&wbsd_driver);
1957 return result;
1958 }
1959 }
1960
1961 return 0;
1962}
1963
1964static void __exit wbsd_drv_exit(void)
1965{
1966#ifdef CONFIG_PNP
1967
1968 if (!param_nopnp)
1969 pnp_unregister_driver(&wbsd_pnp_driver);
1970
1971#endif
1972
1973 if (param_nopnp) {
1974 platform_device_unregister(wbsd_device);
1975
1976 platform_driver_unregister(&wbsd_driver);
1977 }
1978
1979 DBG("unloaded\n");
1980}
1981
1982module_init(wbsd_drv_init);
1983module_exit(wbsd_drv_exit);
1984#ifdef CONFIG_PNP
1985module_param_hw_named(nopnp, param_nopnp, uint, other, 0444);
1986#endif
1987module_param_hw_named(io, param_io, uint, ioport, 0444);
1988module_param_hw_named(irq, param_irq, uint, irq, 0444);
1989module_param_hw_named(dma, param_dma, int, dma, 0444);
1990
1991MODULE_LICENSE("GPL");
1992MODULE_AUTHOR("Pierre Ossman <pierre@ossman.eu>");
1993MODULE_DESCRIPTION("Winbond W83L51xD SD/MMC card interface driver");
1994
1995#ifdef CONFIG_PNP
1996MODULE_PARM_DESC(nopnp, "Scan for device instead of relying on PNP. (default 0)");
1997#endif
1998MODULE_PARM_DESC(io, "I/O base to allocate. Must be 8 byte aligned. (default 0x248)");
1999MODULE_PARM_DESC(irq, "IRQ to allocate. (default 6)");
2000MODULE_PARM_DESC(dma, "DMA channel to allocate. -1 for no DMA. (default 2)");
2001