forked from jonsmirl/mpc5200
-
Notifications
You must be signed in to change notification settings - Fork 46
/
menelaus.c
1319 lines (1119 loc) · 31 KB
/
menelaus.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
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*
* Copyright (C) 2004 Texas Instruments, Inc.
*
* Some parts based tps65010.c:
* Copyright (C) 2004 Texas Instruments and
* Copyright (C) 2004-2005 David Brownell
*
* Some parts based on tlv320aic24.c:
* Copyright (C) by Kai Svahn <kai.svahn@nokia.com>
*
* Changes for interrupt handling and clean-up by
* Tony Lindgren <tony@atomide.com> and Imre Deak <imre.deak@nokia.com>
* Cleanup and generalized support for voltage setting by
* Juha Yrjola
* Added support for controlling VCORE and regulator sleep states,
* Amit Kucheria <amit.kucheria@nokia.com>
* Copyright (C) 2005, 2006 Nokia Corporation
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/sched.h>
#include <linux/mutex.h>
#include <linux/workqueue.h>
#include <linux/delay.h>
#include <linux/rtc.h>
#include <linux/bcd.h>
#include <linux/slab.h>
#include <asm/mach/irq.h>
#include <asm/gpio.h>
#include <plat/menelaus.h>
#define DRIVER_NAME "menelaus"
#define MENELAUS_I2C_ADDRESS 0x72
#define MENELAUS_REV 0x01
#define MENELAUS_VCORE_CTRL1 0x02
#define MENELAUS_VCORE_CTRL2 0x03
#define MENELAUS_VCORE_CTRL3 0x04
#define MENELAUS_VCORE_CTRL4 0x05
#define MENELAUS_VCORE_CTRL5 0x06
#define MENELAUS_DCDC_CTRL1 0x07
#define MENELAUS_DCDC_CTRL2 0x08
#define MENELAUS_DCDC_CTRL3 0x09
#define MENELAUS_LDO_CTRL1 0x0A
#define MENELAUS_LDO_CTRL2 0x0B
#define MENELAUS_LDO_CTRL3 0x0C
#define MENELAUS_LDO_CTRL4 0x0D
#define MENELAUS_LDO_CTRL5 0x0E
#define MENELAUS_LDO_CTRL6 0x0F
#define MENELAUS_LDO_CTRL7 0x10
#define MENELAUS_LDO_CTRL8 0x11
#define MENELAUS_SLEEP_CTRL1 0x12
#define MENELAUS_SLEEP_CTRL2 0x13
#define MENELAUS_DEVICE_OFF 0x14
#define MENELAUS_OSC_CTRL 0x15
#define MENELAUS_DETECT_CTRL 0x16
#define MENELAUS_INT_MASK1 0x17
#define MENELAUS_INT_MASK2 0x18
#define MENELAUS_INT_STATUS1 0x19
#define MENELAUS_INT_STATUS2 0x1A
#define MENELAUS_INT_ACK1 0x1B
#define MENELAUS_INT_ACK2 0x1C
#define MENELAUS_GPIO_CTRL 0x1D
#define MENELAUS_GPIO_IN 0x1E
#define MENELAUS_GPIO_OUT 0x1F
#define MENELAUS_BBSMS 0x20
#define MENELAUS_RTC_CTRL 0x21
#define MENELAUS_RTC_UPDATE 0x22
#define MENELAUS_RTC_SEC 0x23
#define MENELAUS_RTC_MIN 0x24
#define MENELAUS_RTC_HR 0x25
#define MENELAUS_RTC_DAY 0x26
#define MENELAUS_RTC_MON 0x27
#define MENELAUS_RTC_YR 0x28
#define MENELAUS_RTC_WKDAY 0x29
#define MENELAUS_RTC_AL_SEC 0x2A
#define MENELAUS_RTC_AL_MIN 0x2B
#define MENELAUS_RTC_AL_HR 0x2C
#define MENELAUS_RTC_AL_DAY 0x2D
#define MENELAUS_RTC_AL_MON 0x2E
#define MENELAUS_RTC_AL_YR 0x2F
#define MENELAUS_RTC_COMP_MSB 0x30
#define MENELAUS_RTC_COMP_LSB 0x31
#define MENELAUS_S1_PULL_EN 0x32
#define MENELAUS_S1_PULL_DIR 0x33
#define MENELAUS_S2_PULL_EN 0x34
#define MENELAUS_S2_PULL_DIR 0x35
#define MENELAUS_MCT_CTRL1 0x36
#define MENELAUS_MCT_CTRL2 0x37
#define MENELAUS_MCT_CTRL3 0x38
#define MENELAUS_MCT_PIN_ST 0x39
#define MENELAUS_DEBOUNCE1 0x3A
#define IH_MENELAUS_IRQS 12
#define MENELAUS_MMC_S1CD_IRQ 0 /* MMC slot 1 card change */
#define MENELAUS_MMC_S2CD_IRQ 1 /* MMC slot 2 card change */
#define MENELAUS_MMC_S1D1_IRQ 2 /* MMC DAT1 low in slot 1 */
#define MENELAUS_MMC_S2D1_IRQ 3 /* MMC DAT1 low in slot 2 */
#define MENELAUS_LOWBAT_IRQ 4 /* Low battery */
#define MENELAUS_HOTDIE_IRQ 5 /* Hot die detect */
#define MENELAUS_UVLO_IRQ 6 /* UVLO detect */
#define MENELAUS_TSHUT_IRQ 7 /* Thermal shutdown */
#define MENELAUS_RTCTMR_IRQ 8 /* RTC timer */
#define MENELAUS_RTCALM_IRQ 9 /* RTC alarm */
#define MENELAUS_RTCERR_IRQ 10 /* RTC error */
#define MENELAUS_PSHBTN_IRQ 11 /* Push button */
#define MENELAUS_RESERVED12_IRQ 12 /* Reserved */
#define MENELAUS_RESERVED13_IRQ 13 /* Reserved */
#define MENELAUS_RESERVED14_IRQ 14 /* Reserved */
#define MENELAUS_RESERVED15_IRQ 15 /* Reserved */
/* VCORE_CTRL1 register */
#define VCORE_CTRL1_BYP_COMP (1 << 5)
#define VCORE_CTRL1_HW_NSW (1 << 7)
/* GPIO_CTRL register */
#define GPIO_CTRL_SLOTSELEN (1 << 5)
#define GPIO_CTRL_SLPCTLEN (1 << 6)
#define GPIO1_DIR_INPUT (1 << 0)
#define GPIO2_DIR_INPUT (1 << 1)
#define GPIO3_DIR_INPUT (1 << 2)
/* MCT_CTRL1 register */
#define MCT_CTRL1_S1_CMD_OD (1 << 2)
#define MCT_CTRL1_S2_CMD_OD (1 << 3)
/* MCT_CTRL2 register */
#define MCT_CTRL2_VS2_SEL_D0 (1 << 0)
#define MCT_CTRL2_VS2_SEL_D1 (1 << 1)
#define MCT_CTRL2_S1CD_BUFEN (1 << 4)
#define MCT_CTRL2_S2CD_BUFEN (1 << 5)
#define MCT_CTRL2_S1CD_DBEN (1 << 6)
#define MCT_CTRL2_S2CD_BEN (1 << 7)
/* MCT_CTRL3 register */
#define MCT_CTRL3_SLOT1_EN (1 << 0)
#define MCT_CTRL3_SLOT2_EN (1 << 1)
#define MCT_CTRL3_S1_AUTO_EN (1 << 2)
#define MCT_CTRL3_S2_AUTO_EN (1 << 3)
/* MCT_PIN_ST register */
#define MCT_PIN_ST_S1_CD_ST (1 << 0)
#define MCT_PIN_ST_S2_CD_ST (1 << 1)
static void menelaus_work(struct work_struct *_menelaus);
struct menelaus_chip {
struct mutex lock;
struct i2c_client *client;
struct work_struct work;
#ifdef CONFIG_RTC_DRV_TWL92330
struct rtc_device *rtc;
u8 rtc_control;
unsigned uie:1;
#endif
unsigned vcore_hw_mode:1;
u8 mask1, mask2;
void (*handlers[16])(struct menelaus_chip *);
void (*mmc_callback)(void *data, u8 mask);
void *mmc_callback_data;
};
static struct menelaus_chip *the_menelaus;
static int menelaus_write_reg(int reg, u8 value)
{
int val = i2c_smbus_write_byte_data(the_menelaus->client, reg, value);
if (val < 0) {
pr_err(DRIVER_NAME ": write error");
return val;
}
return 0;
}
static int menelaus_read_reg(int reg)
{
int val = i2c_smbus_read_byte_data(the_menelaus->client, reg);
if (val < 0)
pr_err(DRIVER_NAME ": read error");
return val;
}
static int menelaus_enable_irq(int irq)
{
if (irq > 7) {
irq -= 8;
the_menelaus->mask2 &= ~(1 << irq);
return menelaus_write_reg(MENELAUS_INT_MASK2,
the_menelaus->mask2);
} else {
the_menelaus->mask1 &= ~(1 << irq);
return menelaus_write_reg(MENELAUS_INT_MASK1,
the_menelaus->mask1);
}
}
static int menelaus_disable_irq(int irq)
{
if (irq > 7) {
irq -= 8;
the_menelaus->mask2 |= (1 << irq);
return menelaus_write_reg(MENELAUS_INT_MASK2,
the_menelaus->mask2);
} else {
the_menelaus->mask1 |= (1 << irq);
return menelaus_write_reg(MENELAUS_INT_MASK1,
the_menelaus->mask1);
}
}
static int menelaus_ack_irq(int irq)
{
if (irq > 7)
return menelaus_write_reg(MENELAUS_INT_ACK2, 1 << (irq - 8));
else
return menelaus_write_reg(MENELAUS_INT_ACK1, 1 << irq);
}
/* Adds a handler for an interrupt. Does not run in interrupt context */
static int menelaus_add_irq_work(int irq,
void (*handler)(struct menelaus_chip *))
{
int ret = 0;
mutex_lock(&the_menelaus->lock);
the_menelaus->handlers[irq] = handler;
ret = menelaus_enable_irq(irq);
mutex_unlock(&the_menelaus->lock);
return ret;
}
/* Removes handler for an interrupt */
static int menelaus_remove_irq_work(int irq)
{
int ret = 0;
mutex_lock(&the_menelaus->lock);
ret = menelaus_disable_irq(irq);
the_menelaus->handlers[irq] = NULL;
mutex_unlock(&the_menelaus->lock);
return ret;
}
/*
* Gets scheduled when a card detect interrupt happens. Note that in some cases
* this line is wired to card cover switch rather than the card detect switch
* in each slot. In this case the cards are not seen by menelaus.
* FIXME: Add handling for D1 too
*/
static void menelaus_mmc_cd_work(struct menelaus_chip *menelaus_hw)
{
int reg;
unsigned char card_mask = 0;
reg = menelaus_read_reg(MENELAUS_MCT_PIN_ST);
if (reg < 0)
return;
if (!(reg & 0x1))
card_mask |= MCT_PIN_ST_S1_CD_ST;
if (!(reg & 0x2))
card_mask |= MCT_PIN_ST_S2_CD_ST;
if (menelaus_hw->mmc_callback)
menelaus_hw->mmc_callback(menelaus_hw->mmc_callback_data,
card_mask);
}
/*
* Toggles the MMC slots between open-drain and push-pull mode.
*/
int menelaus_set_mmc_opendrain(int slot, int enable)
{
int ret, val;
if (slot != 1 && slot != 2)
return -EINVAL;
mutex_lock(&the_menelaus->lock);
ret = menelaus_read_reg(MENELAUS_MCT_CTRL1);
if (ret < 0) {
mutex_unlock(&the_menelaus->lock);
return ret;
}
val = ret;
if (slot == 1) {
if (enable)
val |= MCT_CTRL1_S1_CMD_OD;
else
val &= ~MCT_CTRL1_S1_CMD_OD;
} else {
if (enable)
val |= MCT_CTRL1_S2_CMD_OD;
else
val &= ~MCT_CTRL1_S2_CMD_OD;
}
ret = menelaus_write_reg(MENELAUS_MCT_CTRL1, val);
mutex_unlock(&the_menelaus->lock);
return ret;
}
EXPORT_SYMBOL(menelaus_set_mmc_opendrain);
int menelaus_set_slot_sel(int enable)
{
int ret;
mutex_lock(&the_menelaus->lock);
ret = menelaus_read_reg(MENELAUS_GPIO_CTRL);
if (ret < 0)
goto out;
ret |= GPIO2_DIR_INPUT;
if (enable)
ret |= GPIO_CTRL_SLOTSELEN;
else
ret &= ~GPIO_CTRL_SLOTSELEN;
ret = menelaus_write_reg(MENELAUS_GPIO_CTRL, ret);
out:
mutex_unlock(&the_menelaus->lock);
return ret;
}
EXPORT_SYMBOL(menelaus_set_slot_sel);
int menelaus_set_mmc_slot(int slot, int enable, int power, int cd_en)
{
int ret, val;
if (slot != 1 && slot != 2)
return -EINVAL;
if (power >= 3)
return -EINVAL;
mutex_lock(&the_menelaus->lock);
ret = menelaus_read_reg(MENELAUS_MCT_CTRL2);
if (ret < 0)
goto out;
val = ret;
if (slot == 1) {
if (cd_en)
val |= MCT_CTRL2_S1CD_BUFEN | MCT_CTRL2_S1CD_DBEN;
else
val &= ~(MCT_CTRL2_S1CD_BUFEN | MCT_CTRL2_S1CD_DBEN);
} else {
if (cd_en)
val |= MCT_CTRL2_S2CD_BUFEN | MCT_CTRL2_S2CD_BEN;
else
val &= ~(MCT_CTRL2_S2CD_BUFEN | MCT_CTRL2_S2CD_BEN);
}
ret = menelaus_write_reg(MENELAUS_MCT_CTRL2, val);
if (ret < 0)
goto out;
ret = menelaus_read_reg(MENELAUS_MCT_CTRL3);
if (ret < 0)
goto out;
val = ret;
if (slot == 1) {
if (enable)
val |= MCT_CTRL3_SLOT1_EN;
else
val &= ~MCT_CTRL3_SLOT1_EN;
} else {
int b;
if (enable)
val |= MCT_CTRL3_SLOT2_EN;
else
val &= ~MCT_CTRL3_SLOT2_EN;
b = menelaus_read_reg(MENELAUS_MCT_CTRL2);
b &= ~(MCT_CTRL2_VS2_SEL_D0 | MCT_CTRL2_VS2_SEL_D1);
b |= power;
ret = menelaus_write_reg(MENELAUS_MCT_CTRL2, b);
if (ret < 0)
goto out;
}
/* Disable autonomous shutdown */
val &= ~(MCT_CTRL3_S1_AUTO_EN | MCT_CTRL3_S2_AUTO_EN);
ret = menelaus_write_reg(MENELAUS_MCT_CTRL3, val);
out:
mutex_unlock(&the_menelaus->lock);
return ret;
}
EXPORT_SYMBOL(menelaus_set_mmc_slot);
int menelaus_register_mmc_callback(void (*callback)(void *data, u8 card_mask),
void *data)
{
int ret = 0;
the_menelaus->mmc_callback_data = data;
the_menelaus->mmc_callback = callback;
ret = menelaus_add_irq_work(MENELAUS_MMC_S1CD_IRQ,
menelaus_mmc_cd_work);
if (ret < 0)
return ret;
ret = menelaus_add_irq_work(MENELAUS_MMC_S2CD_IRQ,
menelaus_mmc_cd_work);
if (ret < 0)
return ret;
ret = menelaus_add_irq_work(MENELAUS_MMC_S1D1_IRQ,
menelaus_mmc_cd_work);
if (ret < 0)
return ret;
ret = menelaus_add_irq_work(MENELAUS_MMC_S2D1_IRQ,
menelaus_mmc_cd_work);
return ret;
}
EXPORT_SYMBOL(menelaus_register_mmc_callback);
void menelaus_unregister_mmc_callback(void)
{
menelaus_remove_irq_work(MENELAUS_MMC_S1CD_IRQ);
menelaus_remove_irq_work(MENELAUS_MMC_S2CD_IRQ);
menelaus_remove_irq_work(MENELAUS_MMC_S1D1_IRQ);
menelaus_remove_irq_work(MENELAUS_MMC_S2D1_IRQ);
the_menelaus->mmc_callback = NULL;
the_menelaus->mmc_callback_data = 0;
}
EXPORT_SYMBOL(menelaus_unregister_mmc_callback);
struct menelaus_vtg {
const char *name;
u8 vtg_reg;
u8 vtg_shift;
u8 vtg_bits;
u8 mode_reg;
};
struct menelaus_vtg_value {
u16 vtg;
u16 val;
};
static int menelaus_set_voltage(const struct menelaus_vtg *vtg, int mV,
int vtg_val, int mode)
{
int val, ret;
struct i2c_client *c = the_menelaus->client;
mutex_lock(&the_menelaus->lock);
if (vtg == 0)
goto set_voltage;
ret = menelaus_read_reg(vtg->vtg_reg);
if (ret < 0)
goto out;
val = ret & ~(((1 << vtg->vtg_bits) - 1) << vtg->vtg_shift);
val |= vtg_val << vtg->vtg_shift;
dev_dbg(&c->dev, "Setting voltage '%s'"
"to %d mV (reg 0x%02x, val 0x%02x)\n",
vtg->name, mV, vtg->vtg_reg, val);
ret = menelaus_write_reg(vtg->vtg_reg, val);
if (ret < 0)
goto out;
set_voltage:
ret = menelaus_write_reg(vtg->mode_reg, mode);
out:
mutex_unlock(&the_menelaus->lock);
if (ret == 0) {
/* Wait for voltage to stabilize */
msleep(1);
}
return ret;
}
static int menelaus_get_vtg_value(int vtg, const struct menelaus_vtg_value *tbl,
int n)
{
int i;
for (i = 0; i < n; i++, tbl++)
if (tbl->vtg == vtg)
return tbl->val;
return -EINVAL;
}
/*
* Vcore can be programmed in two ways:
* SW-controlled: Required voltage is programmed into VCORE_CTRL1
* HW-controlled: Required range (roof-floor) is programmed into VCORE_CTRL3
* and VCORE_CTRL4
*
* Call correct 'set' function accordingly
*/
static const struct menelaus_vtg_value vcore_values[] = {
{ 1000, 0 },
{ 1025, 1 },
{ 1050, 2 },
{ 1075, 3 },
{ 1100, 4 },
{ 1125, 5 },
{ 1150, 6 },
{ 1175, 7 },
{ 1200, 8 },
{ 1225, 9 },
{ 1250, 10 },
{ 1275, 11 },
{ 1300, 12 },
{ 1325, 13 },
{ 1350, 14 },
{ 1375, 15 },
{ 1400, 16 },
{ 1425, 17 },
{ 1450, 18 },
};
int menelaus_set_vcore_sw(unsigned int mV)
{
int val, ret;
struct i2c_client *c = the_menelaus->client;
val = menelaus_get_vtg_value(mV, vcore_values,
ARRAY_SIZE(vcore_values));
if (val < 0)
return -EINVAL;
dev_dbg(&c->dev, "Setting VCORE to %d mV (val 0x%02x)\n", mV, val);
/* Set SW mode and the voltage in one go. */
mutex_lock(&the_menelaus->lock);
ret = menelaus_write_reg(MENELAUS_VCORE_CTRL1, val);
if (ret == 0)
the_menelaus->vcore_hw_mode = 0;
mutex_unlock(&the_menelaus->lock);
msleep(1);
return ret;
}
int menelaus_set_vcore_hw(unsigned int roof_mV, unsigned int floor_mV)
{
int fval, rval, val, ret;
struct i2c_client *c = the_menelaus->client;
rval = menelaus_get_vtg_value(roof_mV, vcore_values,
ARRAY_SIZE(vcore_values));
if (rval < 0)
return -EINVAL;
fval = menelaus_get_vtg_value(floor_mV, vcore_values,
ARRAY_SIZE(vcore_values));
if (fval < 0)
return -EINVAL;
dev_dbg(&c->dev, "Setting VCORE FLOOR to %d mV and ROOF to %d mV\n",
floor_mV, roof_mV);
mutex_lock(&the_menelaus->lock);
ret = menelaus_write_reg(MENELAUS_VCORE_CTRL3, fval);
if (ret < 0)
goto out;
ret = menelaus_write_reg(MENELAUS_VCORE_CTRL4, rval);
if (ret < 0)
goto out;
if (!the_menelaus->vcore_hw_mode) {
val = menelaus_read_reg(MENELAUS_VCORE_CTRL1);
/* HW mode, turn OFF byte comparator */
val |= (VCORE_CTRL1_HW_NSW | VCORE_CTRL1_BYP_COMP);
ret = menelaus_write_reg(MENELAUS_VCORE_CTRL1, val);
the_menelaus->vcore_hw_mode = 1;
}
msleep(1);
out:
mutex_unlock(&the_menelaus->lock);
return ret;
}
static const struct menelaus_vtg vmem_vtg = {
.name = "VMEM",
.vtg_reg = MENELAUS_LDO_CTRL1,
.vtg_shift = 0,
.vtg_bits = 2,
.mode_reg = MENELAUS_LDO_CTRL3,
};
static const struct menelaus_vtg_value vmem_values[] = {
{ 1500, 0 },
{ 1800, 1 },
{ 1900, 2 },
{ 2500, 3 },
};
int menelaus_set_vmem(unsigned int mV)
{
int val;
if (mV == 0)
return menelaus_set_voltage(&vmem_vtg, 0, 0, 0);
val = menelaus_get_vtg_value(mV, vmem_values, ARRAY_SIZE(vmem_values));
if (val < 0)
return -EINVAL;
return menelaus_set_voltage(&vmem_vtg, mV, val, 0x02);
}
EXPORT_SYMBOL(menelaus_set_vmem);
static const struct menelaus_vtg vio_vtg = {
.name = "VIO",
.vtg_reg = MENELAUS_LDO_CTRL1,
.vtg_shift = 2,
.vtg_bits = 2,
.mode_reg = MENELAUS_LDO_CTRL4,
};
static const struct menelaus_vtg_value vio_values[] = {
{ 1500, 0 },
{ 1800, 1 },
{ 2500, 2 },
{ 2800, 3 },
};
int menelaus_set_vio(unsigned int mV)
{
int val;
if (mV == 0)
return menelaus_set_voltage(&vio_vtg, 0, 0, 0);
val = menelaus_get_vtg_value(mV, vio_values, ARRAY_SIZE(vio_values));
if (val < 0)
return -EINVAL;
return menelaus_set_voltage(&vio_vtg, mV, val, 0x02);
}
EXPORT_SYMBOL(menelaus_set_vio);
static const struct menelaus_vtg_value vdcdc_values[] = {
{ 1500, 0 },
{ 1800, 1 },
{ 2000, 2 },
{ 2200, 3 },
{ 2400, 4 },
{ 2800, 5 },
{ 3000, 6 },
{ 3300, 7 },
};
static const struct menelaus_vtg vdcdc2_vtg = {
.name = "VDCDC2",
.vtg_reg = MENELAUS_DCDC_CTRL1,
.vtg_shift = 0,
.vtg_bits = 3,
.mode_reg = MENELAUS_DCDC_CTRL2,
};
static const struct menelaus_vtg vdcdc3_vtg = {
.name = "VDCDC3",
.vtg_reg = MENELAUS_DCDC_CTRL1,
.vtg_shift = 3,
.vtg_bits = 3,
.mode_reg = MENELAUS_DCDC_CTRL3,
};
int menelaus_set_vdcdc(int dcdc, unsigned int mV)
{
const struct menelaus_vtg *vtg;
int val;
if (dcdc != 2 && dcdc != 3)
return -EINVAL;
if (dcdc == 2)
vtg = &vdcdc2_vtg;
else
vtg = &vdcdc3_vtg;
if (mV == 0)
return menelaus_set_voltage(vtg, 0, 0, 0);
val = menelaus_get_vtg_value(mV, vdcdc_values,
ARRAY_SIZE(vdcdc_values));
if (val < 0)
return -EINVAL;
return menelaus_set_voltage(vtg, mV, val, 0x03);
}
static const struct menelaus_vtg_value vmmc_values[] = {
{ 1850, 0 },
{ 2800, 1 },
{ 3000, 2 },
{ 3100, 3 },
};
static const struct menelaus_vtg vmmc_vtg = {
.name = "VMMC",
.vtg_reg = MENELAUS_LDO_CTRL1,
.vtg_shift = 6,
.vtg_bits = 2,
.mode_reg = MENELAUS_LDO_CTRL7,
};
int menelaus_set_vmmc(unsigned int mV)
{
int val;
if (mV == 0)
return menelaus_set_voltage(&vmmc_vtg, 0, 0, 0);
val = menelaus_get_vtg_value(mV, vmmc_values, ARRAY_SIZE(vmmc_values));
if (val < 0)
return -EINVAL;
return menelaus_set_voltage(&vmmc_vtg, mV, val, 0x02);
}
EXPORT_SYMBOL(menelaus_set_vmmc);
static const struct menelaus_vtg_value vaux_values[] = {
{ 1500, 0 },
{ 1800, 1 },
{ 2500, 2 },
{ 2800, 3 },
};
static const struct menelaus_vtg vaux_vtg = {
.name = "VAUX",
.vtg_reg = MENELAUS_LDO_CTRL1,
.vtg_shift = 4,
.vtg_bits = 2,
.mode_reg = MENELAUS_LDO_CTRL6,
};
int menelaus_set_vaux(unsigned int mV)
{
int val;
if (mV == 0)
return menelaus_set_voltage(&vaux_vtg, 0, 0, 0);
val = menelaus_get_vtg_value(mV, vaux_values, ARRAY_SIZE(vaux_values));
if (val < 0)
return -EINVAL;
return menelaus_set_voltage(&vaux_vtg, mV, val, 0x02);
}
EXPORT_SYMBOL(menelaus_set_vaux);
int menelaus_get_slot_pin_states(void)
{
return menelaus_read_reg(MENELAUS_MCT_PIN_ST);
}
EXPORT_SYMBOL(menelaus_get_slot_pin_states);
int menelaus_set_regulator_sleep(int enable, u32 val)
{
int t, ret;
struct i2c_client *c = the_menelaus->client;
mutex_lock(&the_menelaus->lock);
ret = menelaus_write_reg(MENELAUS_SLEEP_CTRL2, val);
if (ret < 0)
goto out;
dev_dbg(&c->dev, "regulator sleep configuration: %02x\n", val);
ret = menelaus_read_reg(MENELAUS_GPIO_CTRL);
if (ret < 0)
goto out;
t = (GPIO_CTRL_SLPCTLEN | GPIO3_DIR_INPUT);
if (enable)
ret |= t;
else
ret &= ~t;
ret = menelaus_write_reg(MENELAUS_GPIO_CTRL, ret);
out:
mutex_unlock(&the_menelaus->lock);
return ret;
}
/*-----------------------------------------------------------------------*/
/* Handles Menelaus interrupts. Does not run in interrupt context */
static void menelaus_work(struct work_struct *_menelaus)
{
struct menelaus_chip *menelaus =
container_of(_menelaus, struct menelaus_chip, work);
void (*handler)(struct menelaus_chip *menelaus);
while (1) {
unsigned isr;
isr = (menelaus_read_reg(MENELAUS_INT_STATUS2)
& ~menelaus->mask2) << 8;
isr |= menelaus_read_reg(MENELAUS_INT_STATUS1)
& ~menelaus->mask1;
if (!isr)
break;
while (isr) {
int irq = fls(isr) - 1;
isr &= ~(1 << irq);
mutex_lock(&menelaus->lock);
menelaus_disable_irq(irq);
menelaus_ack_irq(irq);
handler = menelaus->handlers[irq];
if (handler)
handler(menelaus);
menelaus_enable_irq(irq);
mutex_unlock(&menelaus->lock);
}
}
enable_irq(menelaus->client->irq);
}
/*
* We cannot use I2C in interrupt context, so we just schedule work.
*/
static irqreturn_t menelaus_irq(int irq, void *_menelaus)
{
struct menelaus_chip *menelaus = _menelaus;
disable_irq_nosync(irq);
(void)schedule_work(&menelaus->work);
return IRQ_HANDLED;
}
/*-----------------------------------------------------------------------*/
/*
* The RTC needs to be set once, then it runs on backup battery power.
* It supports alarms, including system wake alarms (from some modes);
* and 1/second IRQs if requested.
*/
#ifdef CONFIG_RTC_DRV_TWL92330
#define RTC_CTRL_RTC_EN (1 << 0)
#define RTC_CTRL_AL_EN (1 << 1)
#define RTC_CTRL_MODE12 (1 << 2)
#define RTC_CTRL_EVERY_MASK (3 << 3)
#define RTC_CTRL_EVERY_SEC (0 << 3)
#define RTC_CTRL_EVERY_MIN (1 << 3)
#define RTC_CTRL_EVERY_HR (2 << 3)
#define RTC_CTRL_EVERY_DAY (3 << 3)
#define RTC_UPDATE_EVERY 0x08
#define RTC_HR_PM (1 << 7)
static void menelaus_to_time(char *regs, struct rtc_time *t)
{
t->tm_sec = bcd2bin(regs[0]);
t->tm_min = bcd2bin(regs[1]);
if (the_menelaus->rtc_control & RTC_CTRL_MODE12) {
t->tm_hour = bcd2bin(regs[2] & 0x1f) - 1;
if (regs[2] & RTC_HR_PM)
t->tm_hour += 12;
} else
t->tm_hour = bcd2bin(regs[2] & 0x3f);
t->tm_mday = bcd2bin(regs[3]);
t->tm_mon = bcd2bin(regs[4]) - 1;
t->tm_year = bcd2bin(regs[5]) + 100;
}
static int time_to_menelaus(struct rtc_time *t, int regnum)
{
int hour, status;
status = menelaus_write_reg(regnum++, bin2bcd(t->tm_sec));
if (status < 0)
goto fail;
status = menelaus_write_reg(regnum++, bin2bcd(t->tm_min));
if (status < 0)
goto fail;
if (the_menelaus->rtc_control & RTC_CTRL_MODE12) {
hour = t->tm_hour + 1;
if (hour > 12)
hour = RTC_HR_PM | bin2bcd(hour - 12);
else
hour = bin2bcd(hour);
} else
hour = bin2bcd(t->tm_hour);
status = menelaus_write_reg(regnum++, hour);
if (status < 0)
goto fail;
status = menelaus_write_reg(regnum++, bin2bcd(t->tm_mday));
if (status < 0)
goto fail;
status = menelaus_write_reg(regnum++, bin2bcd(t->tm_mon + 1));
if (status < 0)
goto fail;
status = menelaus_write_reg(regnum++, bin2bcd(t->tm_year - 100));
if (status < 0)
goto fail;
return 0;
fail:
dev_err(&the_menelaus->client->dev, "rtc write reg %02x, err %d\n",
--regnum, status);
return status;
}
static int menelaus_read_time(struct device *dev, struct rtc_time *t)
{
struct i2c_msg msg[2];
char regs[7];
int status;
/* block read date and time registers */
regs[0] = MENELAUS_RTC_SEC;
msg[0].addr = MENELAUS_I2C_ADDRESS;
msg[0].flags = 0;
msg[0].len = 1;
msg[0].buf = regs;
msg[1].addr = MENELAUS_I2C_ADDRESS;
msg[1].flags = I2C_M_RD;
msg[1].len = sizeof(regs);
msg[1].buf = regs;
status = i2c_transfer(the_menelaus->client->adapter, msg, 2);
if (status != 2) {
dev_err(dev, "%s error %d\n", "read", status);
return -EIO;
}
menelaus_to_time(regs, t);
t->tm_wday = bcd2bin(regs[6]);
return 0;
}
static int menelaus_set_time(struct device *dev, struct rtc_time *t)
{
int status;
/* write date and time registers */
status = time_to_menelaus(t, MENELAUS_RTC_SEC);
if (status < 0)
return status;
status = menelaus_write_reg(MENELAUS_RTC_WKDAY, bin2bcd(t->tm_wday));
if (status < 0) {
dev_err(&the_menelaus->client->dev, "rtc write reg %02x "
"err %d\n", MENELAUS_RTC_WKDAY, status);
return status;
}
/* now commit the write */
status = menelaus_write_reg(MENELAUS_RTC_UPDATE, RTC_UPDATE_EVERY);
if (status < 0)
dev_err(&the_menelaus->client->dev, "rtc commit time, err %d\n",
status);
return 0;
}
static int menelaus_read_alarm(struct device *dev, struct rtc_wkalrm *w)
{
struct i2c_msg msg[2];
char regs[6];
int status;
/* block read alarm registers */
regs[0] = MENELAUS_RTC_AL_SEC;
msg[0].addr = MENELAUS_I2C_ADDRESS;
msg[0].flags = 0;
msg[0].len = 1;
msg[0].buf = regs;
msg[1].addr = MENELAUS_I2C_ADDRESS;
msg[1].flags = I2C_M_RD;
msg[1].len = sizeof(regs);
msg[1].buf = regs;
status = i2c_transfer(the_menelaus->client->adapter, msg, 2);
if (status != 2) {