-
Notifications
You must be signed in to change notification settings - Fork 2
/
sdio_sif_esp.c
920 lines (715 loc) · 23.4 KB
/
sdio_sif_esp.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
/*
* Copyright (c) 2010 -2013 Espressif System.
*
* sdio serial i/f driver
* - sdio device control routines
* - sync/async DMA/PIO read/write
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifdef ESP_USE_SDIO
#include <linux/mmc/card.h>
#include <linux/mmc/mmc.h>
#include <linux/mmc/core.h>
#include <linux/mmc/host.h>
#include <linux/mmc/sdio_func.h>
#include <linux/mmc/sdio_ids.h>
#include <linux/mmc/sdio.h>
#include <linux/mmc/sd.h>
#include <linux/module.h>
#include <net/mac80211.h>
#include <linux/time.h>
#include <linux/pm.h>
#include "esp_pub.h"
#include "esp_sif.h"
#include "esp_sip.h"
#include "esp_debug.h"
#include "slc_host_register.h"
#include "esp_version.h"
#include "esp_ctrl.h"
#include "esp_file.h"
#ifdef USE_EXT_GPIO
#include "esp_ext.h"
#endif /* USE_EXT_GPIO */
static int /*__init*/ esp_sdio_init(void);
static void /*__exit*/ esp_sdio_exit(void);
#define ESP_DMA_IBUFSZ 2048
//unsigned int esp_msg_level = 0;
unsigned int esp_msg_level = ESP_DBG_ERROR | ESP_SHOW;
static struct semaphore esp_powerup_sem;
static enum esp_sdio_state sif_sdio_state;
struct esp_sdio_ctrl *sif_sctrl = NULL;
#ifdef ESP_ANDROID_LOGGER
bool log_off = false;
#endif /* ESP_ANDROID_LOGGER */
static int esdio_power_off(struct esp_sdio_ctrl *sctrl);
static int esdio_power_on(struct esp_sdio_ctrl *sctrl);
void sif_set_clock(struct sdio_func *func, int clk);
#include "sdio_stub.c"
void sif_lock_bus(struct esp_pub *epub)
{
EPUB_FUNC_CHECK(epub, _exit);
sdio_claim_host(EPUB_TO_FUNC(epub));
_exit:
return;
}
void sif_unlock_bus(struct esp_pub *epub)
{
EPUB_FUNC_CHECK(epub, _exit);
sdio_release_host(EPUB_TO_FUNC(epub));
_exit:
return;
}
static inline bool bad_buf(u8 * buf)
{
return ((unsigned long) buf & 0x3) || !virt_addr_valid(buf);
}
u8 sdio_io_readb(struct esp_pub *epub, int addr, int *res)
{
struct esp_sdio_ctrl *sctrl = NULL;
struct sdio_func *func = NULL;
sctrl = (struct esp_sdio_ctrl *)epub->sif;
func = sctrl->func;
if(func->num == 0)
return sdio_f0_readb(func, addr, res);
else
return sdio_readb(func, addr, res);
}
void sdio_io_writeb(struct esp_pub *epub, u8 value, int addr, int *res)
{
struct esp_sdio_ctrl *sctrl = NULL;
struct sdio_func *func = NULL;
sctrl = (struct esp_sdio_ctrl *)epub->sif;
func = sctrl->func;
if(func->num == 0)
sdio_f0_writeb(func, value, addr, res);
else
sdio_writeb(func, value, addr, res);
sif_platform_check_r1_ready(epub);
}
int sif_io_raw(struct esp_pub *epub, u32 addr, u8 *buf, u32 len, u32 flag)
{
int err = 0;
u8 *ibuf = NULL;
bool need_ibuf = false;
struct esp_sdio_ctrl *sctrl = NULL;
struct sdio_func *func = NULL;
if (epub == NULL || buf == NULL) {
ESSERT(0);
err = -EINVAL;
goto _exit;
}
sctrl = (struct esp_sdio_ctrl *)epub->sif;
func = sctrl->func;
if (func == NULL) {
ESSERT(0);
err = -EINVAL;
goto _exit;
}
if (bad_buf(buf)) {
esp_dbg(ESP_DBG_TRACE, "%s dst 0x%08x, len %d badbuf\n", __func__, addr, len);
need_ibuf = true;
ibuf = sctrl->dma_buffer;
} else {
ibuf = buf;
}
if (flag & SIF_BLOCK_BASIS) {
/* round up for block data transcation */
}
if (flag & SIF_TO_DEVICE) {
if (need_ibuf)
memcpy(ibuf, buf, len);
if (flag & SIF_FIXED_ADDR)
err = sdio_writesb(func, addr, ibuf, len);
else if (flag & SIF_INC_ADDR) {
err = sdio_memcpy_toio(func, addr, ibuf, len);
}
sif_platform_check_r1_ready(epub);
} else if (flag & SIF_FROM_DEVICE) {
if (flag & SIF_FIXED_ADDR)
err = sdio_readsb(func, ibuf, addr, len);
else if (flag & SIF_INC_ADDR) {
err = sdio_memcpy_fromio(func, ibuf, addr, len);
}
if (!err && need_ibuf)
memcpy(buf, ibuf, len);
}
_exit:
return err;
}
int sif_io_sync(struct esp_pub *epub, u32 addr, u8 *buf, u32 len, u32 flag)
{
int err = 0;
u8 * ibuf = NULL;
bool need_ibuf = false;
struct esp_sdio_ctrl *sctrl = NULL;
struct sdio_func *func = NULL;
if (epub == NULL || buf == NULL) {
ESSERT(0);
err = -EINVAL;
goto _exit;
}
sctrl = (struct esp_sdio_ctrl *)epub->sif;
func = sctrl->func;
if (func == NULL) {
ESSERT(0);
err = -EINVAL;
goto _exit;
}
if (bad_buf(buf)) {
esp_dbg(ESP_DBG_TRACE, "%s dst 0x%08x, len %d badbuf\n", __func__, addr, len);
need_ibuf = true;
ibuf = sctrl->dma_buffer;
} else {
ibuf = buf;
}
if (flag & SIF_BLOCK_BASIS) {
/* round up for block data transcation */
}
if (flag & SIF_TO_DEVICE) {
esp_dbg(ESP_DBG_TRACE, "%s to addr 0x%08x, len %d \n", __func__, addr, len);
if (need_ibuf)
memcpy(ibuf, buf, len);
sdio_claim_host(func);
if (flag & SIF_FIXED_ADDR)
err = sdio_writesb(func, addr, ibuf, len);
else if (flag & SIF_INC_ADDR) {
err = sdio_memcpy_toio(func, addr, ibuf, len);
}
sif_platform_check_r1_ready(epub);
sdio_release_host(func);
} else if (flag & SIF_FROM_DEVICE) {
esp_dbg(ESP_DBG_TRACE, "%s from addr 0x%08x, len %d \n", __func__, addr, len);
sdio_claim_host(func);
if (flag & SIF_FIXED_ADDR)
err = sdio_readsb(func, ibuf, addr, len);
else if (flag & SIF_INC_ADDR) {
err = sdio_memcpy_fromio(func, ibuf, addr, len);
}
sdio_release_host(func);
if (!err && need_ibuf)
memcpy(buf, ibuf, len);
}
_exit:
return err;
}
int sif_lldesc_read_sync(struct esp_pub *epub, u8 *buf, u32 len)
{
struct esp_sdio_ctrl *sctrl = NULL;
u32 read_len;
if (epub == NULL || buf == NULL) {
ESSERT(0);
return -EINVAL;
}
sctrl = (struct esp_sdio_ctrl *)epub->sif;
switch(sctrl->target_id) {
case 0x100:
read_len = len;
break;
case 0x600:
read_len = roundup(len, sctrl->slc_blk_sz);
break;
default:
read_len = len;
break;
}
return sif_io_sync((epub), (sctrl->slc_window_end_addr - 2 - (len)), (buf), (read_len), SIF_FROM_DEVICE | SIF_BYTE_BASIS | SIF_INC_ADDR);
}
int sif_lldesc_write_sync(struct esp_pub *epub, u8 *buf, u32 len)
{
struct esp_sdio_ctrl *sctrl = NULL;
u32 write_len;
if (epub == NULL || buf == NULL) {
ESSERT(0);
return -EINVAL;
}
sctrl = (struct esp_sdio_ctrl *)epub->sif;
switch(sctrl->target_id) {
case 0x100:
write_len = len;
break;
case 0x600:
write_len = roundup(len, sctrl->slc_blk_sz);
break;
default:
write_len = len;
break;
}
return sif_io_sync((epub), (sctrl->slc_window_end_addr - (len)), (buf), (write_len), SIF_TO_DEVICE | SIF_BYTE_BASIS | SIF_INC_ADDR);
}
int sif_lldesc_read_raw(struct esp_pub *epub, u8 *buf, u32 len, bool noround)
{
struct esp_sdio_ctrl *sctrl = NULL;
u32 read_len;
if (epub == NULL || buf == NULL) {
ESSERT(0);
return -EINVAL;
}
sctrl = (struct esp_sdio_ctrl *)epub->sif;
switch(sctrl->target_id) {
case 0x100:
read_len = len;
break;
case 0x600:
if(!noround)
read_len = roundup(len, sctrl->slc_blk_sz);
else
read_len = len;
break;
default:
read_len = len;
break;
}
return sif_io_raw((epub), (sctrl->slc_window_end_addr - 2 - (len)), (buf), (read_len), SIF_FROM_DEVICE | SIF_BYTE_BASIS | SIF_INC_ADDR);
}
int sif_lldesc_write_raw(struct esp_pub *epub, u8 *buf, u32 len)
{
struct esp_sdio_ctrl *sctrl = NULL;
u32 write_len;
if (epub == NULL || buf == NULL) {
ESSERT(0);
return -EINVAL;
}
sctrl = (struct esp_sdio_ctrl *)epub->sif;
switch(sctrl->target_id) {
case 0x100:
write_len = len;
break;
case 0x600:
write_len = roundup(len, sctrl->slc_blk_sz);
break;
default:
write_len = len;
break;
}
return sif_io_raw((epub), (sctrl->slc_window_end_addr - (len)), (buf), (write_len), SIF_TO_DEVICE | SIF_BYTE_BASIS | SIF_INC_ADDR);
}
#define MANUFACTURER_ID_EAGLE_BASE 0x1110
#define MANUFACTURER_ID_EAGLE_BASE_MASK 0xFF00
#define MANUFACTURER_CODE 0x6666
static const struct sdio_device_id esp_sdio_devices[] = {
{SDIO_DEVICE(MANUFACTURER_CODE, (MANUFACTURER_ID_EAGLE_BASE | 0x1))},
{},
};
static int esdio_power_on(struct esp_sdio_ctrl *sctrl)
{
int err = 0;
if (sctrl->off == false)
return err;
sdio_claim_host(sctrl->func);
err = sdio_enable_func(sctrl->func);
if (err) {
esp_dbg(ESP_DBG_ERROR, "Unable to enable sdio func: %d\n", err);
sdio_release_host(sctrl->func);
return err;
}
sdio_release_host(sctrl->func);
/* ensure device is up */
msleep(5);
sctrl->off = false;
return err;
}
static int esdio_power_off(struct esp_sdio_ctrl *sctrl)
{
int err;
if (sctrl->off)
return 0;
sdio_claim_host(sctrl->func);
err = sdio_disable_func(sctrl->func);
sdio_release_host(sctrl->func);
if (err)
return err;
sctrl->off = true;
return err;
}
void sif_enable_irq(struct esp_pub *epub)
{
int err;
struct esp_sdio_ctrl *sctrl = NULL;
sctrl = (struct esp_sdio_ctrl *)epub->sif;
sdio_claim_host(sctrl->func);
err = sdio_claim_irq(sctrl->func, sif_dsr);
if (err)
esp_dbg(ESP_DBG_ERROR, "sif %s failed\n", __func__);
atomic_set(&epub->sip->state, SIP_BOOT);
atomic_set(&sctrl->irq_installed, 1);
sdio_release_host(sctrl->func);
}
void sif_disable_irq(struct esp_pub *epub)
{
int err;
struct esp_sdio_ctrl *sctrl = (struct esp_sdio_ctrl *)epub->sif;
int i = 0;
if (atomic_read(&sctrl->irq_installed) == 0)
return;
sdio_claim_host(sctrl->func);
while (atomic_read(&sctrl->irq_handling)) {
sdio_release_host(sctrl->func);
schedule_timeout(HZ / 100);
sdio_claim_host(sctrl->func);
if (i++ >= 400) {
esp_dbg(ESP_DBG_ERROR, "%s force to stop irq\n", __func__);
break;
}
}
err = sdio_release_irq(sctrl->func);
if (err) {
esp_dbg(ESP_DBG_ERROR, "%s release irq failed\n", __func__);
}
atomic_set(&sctrl->irq_installed, 0);
sdio_release_host(sctrl->func);
}
void sif_set_clock(struct sdio_func *func, int clk)
{
struct mmc_host *host = NULL;
struct mmc_card *card = NULL;
card = func->card;
host = card->host;
sdio_claim_host(func);
//currently only set clock
host->ios.clock = clk * 1000000;
esp_dbg(ESP_SHOW, "%s clock is %u\n", __func__, host->ios.clock);
if (host->ios.clock > host->f_max) {
host->ios.clock = host->f_max;
}
host->ops->set_ios(host, &host->ios);
mdelay(2);
sdio_release_host(func);
}
static int esp_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id);
static void esp_sdio_remove(struct sdio_func *func);
static int esp_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id)
{
int err = 0;
struct esp_pub *epub;
struct esp_sdio_ctrl *sctrl;
esp_dbg(ESP_DBG_TRACE,
"sdio_func_num: 0x%X, vendor id: 0x%X, dev id: 0x%X, block size: 0x%X/0x%X\n",
func->num, func->vendor, func->device, func->max_blksize,
func->cur_blksize);
if(sif_sdio_state == ESP_SDIO_STATE_FIRST_INIT){
sctrl = kzalloc(sizeof(struct esp_sdio_ctrl), GFP_KERNEL);
if (sctrl == NULL) {
return -ENOMEM;
}
/* temp buffer reserved for un-dma-able request */
sctrl->dma_buffer = kzalloc(ESP_DMA_IBUFSZ, GFP_KERNEL);
if (sctrl->dma_buffer == NULL) {
err = -ENOMEM;
goto _err_last;
}
sif_sctrl = sctrl;
sctrl->slc_blk_sz = SIF_SLC_BLOCK_SIZE;
epub = esp_pub_alloc_mac80211(&func->dev);
if (epub == NULL) {
esp_dbg(ESP_DBG_ERROR, "no mem for epub \n");
err = -ENOMEM;
goto _err_dma;
}
epub->sif = (void *)sctrl;
sctrl->epub = epub;
#ifdef USE_EXT_GPIO
if (sif_get_ate_config() == 0) {
err = ext_gpio_init(epub);
if (err) {
esp_dbg(ESP_DBG_ERROR, "ext_irq_work_init failed %d\n", err);
goto _err_epub;
}
}
#endif
} else {
sctrl = sif_sctrl;
sif_sctrl = NULL;
epub = sctrl->epub;
SET_IEEE80211_DEV(epub->hw, &func->dev);
epub->dev = &func->dev;
}
epub->sdio_state = sif_sdio_state;
sctrl->func = func;
sdio_set_drvdata(func, sctrl);
sctrl->id = id;
sctrl->off = true;
/* give us some time to enable, in ms */
func->enable_timeout = 100;
err = esdio_power_on(sctrl);
esp_dbg(ESP_DBG_TRACE, " %s >> power_on err %d \n", __func__, err);
if (err){
if(sif_sdio_state == ESP_SDIO_STATE_FIRST_INIT)
goto _err_ext_gpio;
else
goto _err_second_init;
}
check_target_id(epub);
sdio_claim_host(func);
err = sdio_set_block_size(func, sctrl->slc_blk_sz);
if (err) {
esp_dbg(ESP_DBG_ERROR, "Set sdio block size %d failed: %d)\n",
sctrl->slc_blk_sz, err);
sdio_release_host(func);
if(sif_sdio_state == ESP_SDIO_STATE_FIRST_INIT)
goto _err_off;
else
goto _err_second_init;
}
sdio_release_host(func);
#ifdef LOWER_CLK
/* fix clock for dongle */
sif_set_clock(func, 23);
#endif //LOWER_CLK
err = esp_pub_init_all(epub);
if (err) {
esp_dbg(ESP_DBG_ERROR, "esp_init_all failed: %d\n", err);
if(sif_sdio_state == ESP_SDIO_STATE_FIRST_INIT){
err = 0;
goto _err_first_init;
}
if(sif_sdio_state == ESP_SDIO_STATE_SECOND_INIT)
goto _err_second_init;
}
esp_dbg(ESP_DBG_TRACE, " %s return %d\n", __func__, err);
if(sif_sdio_state == ESP_SDIO_STATE_FIRST_INIT){
esp_dbg(ESP_DBG_ERROR, "first normal exit\n");
sif_sdio_state = ESP_SDIO_STATE_FIRST_NORMAL_EXIT;
up(&esp_powerup_sem);
}
return err;
_err_off:
esdio_power_off(sctrl);
_err_ext_gpio:
#ifdef USE_EXT_GPIO
if (sif_get_ate_config() == 0)
ext_gpio_deinit();
_err_epub:
#endif
esp_pub_dealloc_mac80211(epub);
_err_dma:
kfree(sctrl->dma_buffer);
_err_last:
kfree(sctrl);
_err_first_init:
if(sif_sdio_state == ESP_SDIO_STATE_FIRST_INIT){
esp_dbg(ESP_DBG_ERROR, "first error exit\n");
sif_sdio_state = ESP_SDIO_STATE_FIRST_ERROR_EXIT;
up(&esp_powerup_sem);
}
return err;
_err_second_init:
sif_sdio_state = ESP_SDIO_STATE_SECOND_ERROR_EXIT;
esp_sdio_remove(func);
return err;
}
static void esp_sdio_remove(struct sdio_func *func)
{
struct esp_sdio_ctrl *sctrl = NULL;
esp_dbg(ESP_SHOW, "%s enter\n", __func__);
sctrl = sdio_get_drvdata(func);
if (sctrl == NULL) {
esp_dbg(ESP_DBG_ERROR, "%s no sctrl\n", __func__);
return;
}
do {
if (sctrl->epub == NULL) {
esp_dbg(ESP_DBG_ERROR, "%s epub null\n", __func__);
break;
}
sctrl->epub->sdio_state = sif_sdio_state;
if(sif_sdio_state != ESP_SDIO_STATE_FIRST_NORMAL_EXIT){
if (sctrl->epub->sip) {
sip_detach(sctrl->epub->sip);
sctrl->epub->sip = NULL;
esp_dbg(ESP_DBG_TRACE, "%s sip detached \n", __func__);
}
#ifdef USE_EXT_GPIO
if (sif_get_ate_config() == 0)
ext_gpio_deinit();
#endif
} else {
//sif_disable_target_interrupt(sctrl->epub);
atomic_set(&sctrl->epub->sip->state, SIP_STOP);
sif_disable_irq(sctrl->epub);
}
#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 3, 0))
esdio_power_off(sctrl);
esp_dbg(ESP_DBG_TRACE, "%s power off \n", __func__);
#endif /* kernel < 3.3.0 */
#ifdef TEST_MODE
test_exit_netlink();
#endif /* TEST_MODE */
if(sif_sdio_state != ESP_SDIO_STATE_FIRST_NORMAL_EXIT){
esp_pub_dealloc_mac80211(sctrl->epub);
esp_dbg(ESP_DBG_TRACE, "%s dealloc mac80211 \n", __func__);
if (sctrl->dma_buffer) {
kfree(sctrl->dma_buffer);
sctrl->dma_buffer = NULL;
esp_dbg(ESP_DBG_TRACE, "%s free dma_buffer \n", __func__);
}
kfree(sctrl);
}
} while (0);
sdio_set_drvdata(func,NULL);
esp_dbg(ESP_DBG_TRACE, "eagle sdio remove complete\n");
}
MODULE_DEVICE_TABLE(sdio, esp_sdio_devices);
static int esp_sdio_suspend(struct device *dev)
{
//#define dev_to_sdio_func(d) container_of(d, struct sdio_func, dev)
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 32))
struct sdio_func *func = dev_to_sdio_func(dev);
#else
struct sdio_func *func = container_of(dev, struct sdio_func, dev);
#endif
struct esp_sdio_ctrl *sctrl = sdio_get_drvdata(func);
struct esp_pub *epub = sctrl->epub;
printk("%s", __func__);
#if 0
sip_send_suspend_config(epub, 1);
#endif
atomic_set(&epub->ps.state, ESP_PM_ON);
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 34))
do{
u32 sdio_flags = 0;
int ret = 0;
sdio_flags = sdio_get_host_pm_caps(func);
if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
printk("%s can't keep power while host is suspended\n", __func__);
}
/* keep power while host suspended */
ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
if (ret) {
printk("%s error while trying to keep power\n", __func__);
}
}while(0);
#endif
return 0;
}
static int esp_sdio_resume(struct device *dev)
{
esp_dbg(ESP_DBG_ERROR, "%s", __func__);
return 0;
}
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 29))
static const struct dev_pm_ops esp_sdio_pm_ops = {
.suspend= esp_sdio_suspend,
.resume= esp_sdio_resume,
};
#else
static struct pm_ops esp_sdio_pm_ops = {
.suspend= esp_sdio_suspend,
.resume= esp_sdio_resume,
};
#endif
static struct sdio_driver esp_sdio_driver = {
.name = "eagle_sdio",
.id_table = esp_sdio_devices,
.probe = esp_sdio_probe,
.remove = esp_sdio_remove,
.drv = { .pm = &esp_sdio_pm_ops, },
};
static int esp_sdio_dummy_probe(struct sdio_func *func, const struct sdio_device_id *id)
{
esp_dbg(ESP_DBG_ERROR, "%s enter\n", __func__);
up(&esp_powerup_sem);
return 0;
}
static void esp_sdio_dummy_remove(struct sdio_func *func)
{
return;
}
static struct sdio_driver esp_sdio_dummy_driver = {
.name = "eagle_sdio_dummy",
.id_table = esp_sdio_devices,
.probe = esp_sdio_dummy_probe,
.remove = esp_sdio_dummy_remove,
};
static int /*__init*/ esp_sdio_init(void)
{
#define ESP_WAIT_UP_TIME_MS 11000
int err;
u64 ver;
int retry = 3;
bool powerup = false;
int edf_ret = 0;
esp_dbg(ESP_DBG_TRACE, "%s \n", __func__);
#ifdef DRIVER_VER
ver = DRIVER_VER;
esp_dbg(ESP_SHOW, "\n***** EAGLE DRIVER VER:%llx*****\n\n", ver);
#endif
edf_ret = esp_debugfs_init();
request_init_conf();
esp_wakelock_init();
esp_wake_lock();
do {
sema_init(&esp_powerup_sem, 0);
sif_platform_target_poweron();
sif_platform_rescan_card(1);
err = sdio_register_driver(&esp_sdio_dummy_driver);
if (err) {
esp_dbg(ESP_DBG_ERROR, "eagle sdio driver registration failed, error code: %d\n", err);
goto _fail;
}
if (down_timeout(&esp_powerup_sem,
msecs_to_jiffies(ESP_WAIT_UP_TIME_MS)) == 0)
{
powerup = true;
msleep(200);
break;
}
esp_dbg(ESP_SHOW, "%s ------ RETRY ------ \n", __func__);
sif_record_retry_config();
sdio_unregister_driver(&esp_sdio_dummy_driver);
sif_platform_rescan_card(0);
sif_platform_target_poweroff();
} while (retry--);
if (!powerup) {
esp_dbg(ESP_DBG_ERROR, "eagle sdio can not power up!\n");
err = -ENODEV;
goto _fail;
}
esp_dbg(ESP_SHOW, "%s power up OK\n", __func__);
sdio_unregister_driver(&esp_sdio_dummy_driver);
sif_sdio_state = ESP_SDIO_STATE_FIRST_INIT;
sema_init(&esp_powerup_sem, 0);
sdio_register_driver(&esp_sdio_driver);
if ((down_timeout(&esp_powerup_sem,
msecs_to_jiffies(ESP_WAIT_UP_TIME_MS)) == 0 ) && sif_get_ate_config() == 0) {
if(sif_sdio_state == ESP_SDIO_STATE_FIRST_NORMAL_EXIT){
sdio_unregister_driver(&esp_sdio_driver);
sif_platform_rescan_card(0);
msleep(100);
sif_platform_rescan_card(1);
sif_sdio_state = ESP_SDIO_STATE_SECOND_INIT;
sdio_register_driver(&esp_sdio_driver);
}
}
esp_register_early_suspend();
esp_wake_unlock();
return err;
_fail:
esp_wake_unlock();
esp_wakelock_destroy();
return err;
}
static void /*__exit*/ esp_sdio_exit(void)
{
esp_dbg(ESP_SHOW, "%s \n", __func__);
esp_debugfs_exit();
esp_unregister_early_suspend();
sdio_unregister_driver(&esp_sdio_driver);
sif_platform_rescan_card(0);
#ifndef FPGA_DEBUG
sif_platform_target_poweroff();
#endif /* !FPGA_DEBUG */
esp_wakelock_destroy();
}
MODULE_AUTHOR("Espressif System");
MODULE_DESCRIPTION("Driver for SDIO interconnected eagle low-power WLAN devices");
MODULE_LICENSE("GPL");
#endif /* ESP_USE_SDIO */