summaryrefslogtreecommitdiffstats
path: root/drivers/bcma/driver_chipcommon_pmu.c
blob: fe0d48cb17788a9f3614fd8a36add7bac5f58848 (plain)
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
/*
 * Broadcom specific AMBA
 * ChipCommon Power Management Unit driver
 *
 * Copyright 2009, Michael Buesch <m@bues.ch>
 * Copyright 2007, 2011, Broadcom Corporation
 * Copyright 2011, 2012, Hauke Mehrtens <hauke@hauke-m.de>
 *
 * Licensed under the GNU/GPL. See COPYING for details.
 */

#include "bcma_private.h"
#include <linux/export.h>
#include <linux/bcma/bcma.h>

u32 bcma_chipco_pll_read(struct bcma_drv_cc *cc, u32 offset)
{
	bcma_cc_write32(cc, BCMA_CC_PLLCTL_ADDR, offset);
	bcma_cc_read32(cc, BCMA_CC_PLLCTL_ADDR);
	return bcma_cc_read32(cc, BCMA_CC_PLLCTL_DATA);
}
EXPORT_SYMBOL_GPL(bcma_chipco_pll_read);

void bcma_chipco_pll_write(struct bcma_drv_cc *cc, u32 offset, u32 value)
{
	bcma_cc_write32(cc, BCMA_CC_PLLCTL_ADDR, offset);
	bcma_cc_read32(cc, BCMA_CC_PLLCTL_ADDR);
	bcma_cc_write32(cc, BCMA_CC_PLLCTL_DATA, value);
}
EXPORT_SYMBOL_GPL(bcma_chipco_pll_write);

void bcma_chipco_pll_maskset(struct bcma_drv_cc *cc, u32 offset, u32 mask,
			     u32 set)
{
	bcma_cc_write32(cc, BCMA_CC_PLLCTL_ADDR, offset);
	bcma_cc_read32(cc, BCMA_CC_PLLCTL_ADDR);
	bcma_cc_maskset32(cc, BCMA_CC_PLLCTL_DATA, mask, set);
}
EXPORT_SYMBOL_GPL(bcma_chipco_pll_maskset);

void bcma_chipco_chipctl_maskset(struct bcma_drv_cc *cc,
				 u32 offset, u32 mask, u32 set)
{
	bcma_cc_write32(cc, BCMA_CC_CHIPCTL_ADDR, offset);
	bcma_cc_read32(cc, BCMA_CC_CHIPCTL_ADDR);
	bcma_cc_maskset32(cc, BCMA_CC_CHIPCTL_DATA, mask, set);
}
EXPORT_SYMBOL_GPL(bcma_chipco_chipctl_maskset);

void bcma_chipco_regctl_maskset(struct bcma_drv_cc *cc, u32 offset, u32 mask,
				u32 set)
{
	bcma_cc_write32(cc, BCMA_CC_REGCTL_ADDR, offset);
	bcma_cc_read32(cc, BCMA_CC_REGCTL_ADDR);
	bcma_cc_maskset32(cc, BCMA_CC_REGCTL_DATA, mask, set);
}
EXPORT_SYMBOL_GPL(bcma_chipco_regctl_maskset);

static u32 bcma_pmu_xtalfreq(struct bcma_drv_cc *cc)
{
	u32 ilp_ctl, alp_hz;

	if (!(bcma_cc_read32(cc, BCMA_CC_PMU_STAT) &
	      BCMA_CC_PMU_STAT_EXT_LPO_AVAIL))
		return 0;

	bcma_cc_write32(cc, BCMA_CC_PMU_XTAL_FREQ,
			BIT(BCMA_CC_PMU_XTAL_FREQ_MEASURE_SHIFT));
	usleep_range(1000, 2000);

	ilp_ctl = bcma_cc_read32(cc, BCMA_CC_PMU_XTAL_FREQ);
	ilp_ctl &= BCMA_CC_PMU_XTAL_FREQ_ILPCTL_MASK;

	bcma_cc_write32(cc, BCMA_CC_PMU_XTAL_FREQ, 0);

	alp_hz = ilp_ctl * 32768 / 4;
	return (alp_hz + 50000) / 100000 * 100;
}

static void bcma_pmu2_pll_init0(struct bcma_drv_cc *cc, u32 xtalfreq)
{
	struct bcma_bus *bus = cc->core->bus;
	u32 freq_tgt_target = 0, freq_tgt_current;
	u32 pll0, mask;

	switch (bus->chipinfo.id) {
	case BCMA_CHIP_ID_BCM43142:
		/* pmu2_xtaltab0_adfll_485 */
		switch (xtalfreq) {
		case 12000:
			freq_tgt_target = 0x50D52;
			break;
		case 20000:
			freq_tgt_target = 0x307FE;
			break;
		case 26000:
			freq_tgt_target = 0x254EA;
			break;
		case 37400:
			freq_tgt_target = 0x19EF8;
			break;
		case 52000:
			freq_tgt_target = 0x12A75;
			break;
		}
		break;
	}

	if (!freq_tgt_target) {
		bcma_err(bus, "Unknown TGT frequency for xtalfreq %d\n",
			 xtalfreq);
		return;
	}

	pll0 = bcma_chipco_pll_read(cc, BCMA_CC_PMU15_PLL_PLLCTL0);
	freq_tgt_current = (pll0 & BCMA_CC_PMU15_PLL_PC0_FREQTGT_MASK) >>
		BCMA_CC_PMU15_PLL_PC0_FREQTGT_SHIFT;

	if (freq_tgt_current == freq_tgt_target) {
		bcma_debug(bus, "Target TGT frequency already set\n");
		return;
	}

	/* Turn off PLL */
	switch (bus->chipinfo.id) {
	case BCMA_CHIP_ID_BCM43142:
		mask = (u32)~(BCMA_RES_4314_HT_AVAIL |
			      BCMA_RES_4314_MACPHY_CLK_AVAIL);

		bcma_cc_mask32(cc, BCMA_CC_PMU_MINRES_MSK, mask);
		bcma_cc_mask32(cc, BCMA_CC_PMU_MAXRES_MSK, mask);
		bcma_wait_value(cc->core, BCMA_CLKCTLST,
				BCMA_CLKCTLST_HAVEHT, 0, 20000);
		break;
	}

	pll0 &= ~BCMA_CC_PMU15_PLL_PC0_FREQTGT_MASK;
	pll0 |= freq_tgt_target << BCMA_CC_PMU15_PLL_PC0_FREQTGT_SHIFT;
	bcma_chipco_pll_write(cc, BCMA_CC_PMU15_PLL_PLLCTL0, pll0);

	/* Flush */
	if (cc->pmu.rev >= 2)
		bcma_cc_set32(cc, BCMA_CC_PMU_CTL, BCMA_CC_PMU_CTL_PLL_UPD);

	/* TODO: Do we need to update OTP? */
}

static void bcma_pmu_pll_init(struct bcma_drv_cc *cc)
{
	struct bcma_bus *bus = cc->core->bus;
	u32 xtalfreq = bcma_pmu_xtalfreq(cc);

	switch (bus->chipinfo.id) {
	case BCMA_CHIP_ID_BCM43142:
		if (xtalfreq == 0)
			xtalfreq = 20000;
		bcma_pmu2_pll_init0(cc, xtalfreq);
		break;
	}
}

static void bcma_pmu_resources_init(struct bcma_drv_cc *cc)
{
	struct bcma_bus *bus = cc->core->bus;
	u32 min_msk = 0, max_msk = 0;

	switch (bus->chipinfo.id) {
	case BCMA_CHIP_ID_BCM4313:
		min_msk = 0x200D;
		max_msk = 0xFFFF;
		break;
	case BCMA_CHIP_ID_BCM43142:
		min_msk = BCMA_RES_4314_LPLDO_PU |
			  BCMA_RES_4314_PMU_SLEEP_DIS |
			  BCMA_RES_4314_PMU_BG_PU |
			  BCMA_RES_4314_CBUCK_LPOM_PU |
			  BCMA_RES_4314_CBUCK_PFM_PU |
			  BCMA_RES_4314_CLDO_PU |
			  BCMA_RES_4314_LPLDO2_LVM |
			  BCMA_RES_4314_WL_PMU_PU |
			  BCMA_RES_4314_LDO3P3_PU |
			  BCMA_RES_4314_OTP_PU |
			  BCMA_RES_4314_WL_PWRSW_PU |
			  BCMA_RES_4314_LQ_AVAIL |
			  BCMA_RES_4314_LOGIC_RET |
			  BCMA_RES_4314_MEM_SLEEP |
			  BCMA_RES_4314_MACPHY_RET |
			  BCMA_RES_4314_WL_CORE_READY;
		max_msk = 0x3FFFFFFF;
		break;
	default:
		bcma_debug(bus, "PMU resource config unknown or not needed for device 0x%04X\n",
			   bus->chipinfo.id);
	}

	/* Set the resource masks. */
	if (min_msk)
		bcma_cc_write32(cc, BCMA_CC_PMU_MINRES_MSK, min_msk);
	if (max_msk)
		bcma_cc_write32(cc, BCMA_CC_PMU_MAXRES_MSK, max_msk);

	/*
	 * Add some delay; allow resources to come up and settle.
	 * Delay is required for SoC (early init).
	 */
	mdelay(2);
}

/* Disable to allow reading SPROM. Don't know the adventages of enabling it. */
void bcma_chipco_bcm4331_ext_pa_lines_ctl(struct bcma_drv_cc *cc, bool enable)
{
	struct bcma_bus *bus = cc->core->bus;
	u32 val;

	val = bcma_cc_read32(cc, BCMA_CC_CHIPCTL);
	if (enable) {
		val |= BCMA_CHIPCTL_4331_EXTPA_EN;
		if (bus->chipinfo.pkg == 9 || bus->chipinfo.pkg == 11)
			val |= BCMA_CHIPCTL_4331_EXTPA_ON_GPIO2_5;
		else if (bus->chipinfo.rev > 0)
			val |= BCMA_CHIPCTL_4331_EXTPA_EN2;
	} else {
		val &= ~BCMA_CHIPCTL_4331_EXTPA_EN;
		val &= ~BCMA_CHIPCTL_4331_EXTPA_EN2;
		val &= ~BCMA_CHIPCTL_4331_EXTPA_ON_GPIO2_5;
	}
	bcma_cc_write32(cc, BCMA_CC_CHIPCTL, val);
}

static void bcma_pmu_workarounds(struct bcma_drv_cc *cc)
{
	struct bcma_bus *bus = cc->core->bus;

	switch (bus->chipinfo.id) {
	case BCMA_CHIP_ID_BCM4313:
		/* enable 12 mA drive strenth for 4313 and set chipControl
		   register bit 1 */
		bcma_chipco_chipctl_maskset(cc, 0,
					    ~BCMA_CCTRL_4313_12MA_LED_DRIVE,
					    BCMA_CCTRL_4313_12MA_LED_DRIVE);
		break;
	case BCMA_CHIP_ID_BCM4331:
	case BCMA_CHIP_ID_BCM43431:
		/* Ext PA lines must be enabled for tx on BCM4331 */
		bcma_chipco_bcm4331_ext_pa_lines_ctl(cc, true);
		break;
	case BCMA_CHIP_ID_BCM43224:
	case BCMA_CHIP_ID_BCM43421:
		/* enable 12 mA drive strenth for 43224 and set chipControl
		   register bit 15 */
		if (bus->chipinfo.rev == 0) {
			bcma_cc_maskset32(cc, BCMA_CC_CHIPCTL,
					  ~BCMA_CCTRL_43224_GPIO_TOGGLE,
					  BCMA_CCTRL_43224_GPIO_TOGGLE);
			bcma_chipco_chipctl_maskset(cc, 0,
						    ~BCMA_CCTRL_43224A0_12MA_LED_DRIVE,
						    BCMA_CCTRL_43224A0_12MA_LED_DRIVE);
		} else {
			bcma_chipco_chipctl_maskset(cc, 0,
						    ~BCMA_CCTRL_43224B0_12MA_LED_DRIVE,
						    BCMA_CCTRL_43224B0_12MA_LED_DRIVE);
		}
		break;
	default:
		bcma_debug(bus, "Workarounds unknown or not needed for device 0x%04X\n",
			   bus->chipinfo.id);
	}
}

void bcma_pmu_early_init(struct bcma_drv_cc *cc)
{
	u32 pmucap;

	pmucap = bcma_cc_read32(cc, BCMA_CC_PMU_CAP);
	cc->pmu.rev = (pmucap & BCMA_CC_PMU_CAP_REVISION);

	bcma_debug(cc->core->bus, "Found rev %u PMU (capabilities 0x%08X)\n",
		   cc->pmu.rev, pmucap);
}

void bcma_pmu_init(struct bcma_drv_cc *cc)
{
	if (cc->pmu.rev == 1)
		bcma_cc_mask32(cc, BCMA_CC_PMU_CTL,
			      ~BCMA_CC_PMU_CTL_NOILPONW);
	else
		bcma_cc_set32(cc, BCMA_CC_PMU_CTL,
			     BCMA_CC_PMU_CTL_NOILPONW);

	bcma_pmu_pll_init(cc);
	bcma_pmu_resources_init(cc);
	bcma_pmu_workarounds(cc);
}

u32 bcma_pmu_get_alp_clock(struct bcma_drv_cc *cc)
{
	struct bcma_bus *bus = cc->core->bus;

	switch (bus->chipinfo.id) {
	case BCMA_CHIP_ID_BCM4313:
	case BCMA_CHIP_ID_BCM43224:
	case BCMA_CHIP_ID_BCM43225:
	case BCMA_CHIP_ID_BCM43227:
	case BCMA_CHIP_ID_BCM43228:
	case BCMA_CHIP_ID_BCM4331:
	case BCMA_CHIP_ID_BCM43421:
	case BCMA_CHIP_ID_BCM43428:
	case BCMA_CHIP_ID_BCM43431:
	case BCMA_CHIP_ID_BCM4716:
	case BCMA_CHIP_ID_BCM47162:
	case BCMA_CHIP_ID_BCM4748:
	case BCMA_CHIP_ID_BCM4749:
	case BCMA_CHIP_ID_BCM5357:
	case BCMA_CHIP_ID_BCM53572:
	case BCMA_CHIP_ID_BCM6362:
		/* always 20Mhz */
		return 20000 * 1000;
	case BCMA_CHIP_ID_BCM4706:
	case BCMA_CHIP_ID_BCM5356:
		/* always 25Mhz */
		return 25000 * 1000;
	case BCMA_CHIP_ID_BCM43460:
	case BCMA_CHIP_ID_BCM4352:
	case BCMA_CHIP_ID_BCM4360:
		if (cc->status & BCMA_CC_CHIPST_4360_XTAL_40MZ)
			return 40000 * 1000;
		else
			return 20000 * 1000;
	default:
		bcma_warn(bus, "No ALP clock specified for %04X device, pmu rev. %d, using default %d Hz\n",
			  bus->chipinfo.id, cc->pmu.rev, BCMA_CC_PMU_ALP_CLOCK);
	}
	return BCMA_CC_PMU_ALP_CLOCK;
}

/* Find the output of the "m" pll divider given pll controls that start with
 * pllreg "pll0" i.e. 12 for main 6 for phy, 0 for misc.
 */
static u32 bcma_pmu_pll_clock(struct bcma_drv_cc *cc, u32 pll0, u32 m)
{
	u32 tmp, div, ndiv, p1, p2, fc;
	struct bcma_bus *bus = cc->core->bus;

	BUG_ON((pll0 & 3) || (pll0 > BCMA_CC_PMU4716_MAINPLL_PLL0));

	BUG_ON(!m || m > 4);

	if (bus->chipinfo.id == BCMA_CHIP_ID_BCM5357 ||
	    bus->chipinfo.id == BCMA_CHIP_ID_BCM4749) {
		/* Detect failure in clock setting */
		tmp = bcma_cc_read32(cc, BCMA_CC_CHIPSTAT);
		if (tmp & 0x40000)
			return 133 * 1000000;
	}

	tmp = bcma_chipco_pll_read(cc, pll0 + BCMA_CC_PPL_P1P2_OFF);
	p1 = (tmp & BCMA_CC_PPL_P1_MASK) >> BCMA_CC_PPL_P1_SHIFT;
	p2 = (tmp & BCMA_CC_PPL_P2_MASK) >> BCMA_CC_PPL_P2_SHIFT;

	tmp = bcma_chipco_pll_read(cc, pll0 + BCMA_CC_PPL_M14_OFF);
	div = (tmp >> ((m - 1) * BCMA_CC_PPL_MDIV_WIDTH)) &
		BCMA_CC_PPL_MDIV_MASK;

	tmp = bcma_chipco_pll_read(cc, pll0 + BCMA_CC_PPL_NM5_OFF);
	ndiv = (tmp & BCMA_CC_PPL_NDIV_MASK) >> BCMA_CC_PPL_NDIV_SHIFT;

	/* Do calculation in Mhz */
	fc = bcma_pmu_get_alp_clock(cc) / 1000000;
	fc = (p1 * ndiv * fc) / p2;

	/* Return clock in Hertz */
	return (fc / div) * 1000000;
}

static u32 bcma_pmu_pll_clock_bcm4706(struct bcma_drv_cc *cc, u32 pll0, u32 m)
{
	u32 tmp, ndiv, p1div, p2div;
	u32 clock;

	BUG_ON(!m || m > 4);

	/* Get N, P1 and P2 dividers to determine CPU clock */
	tmp = bcma_chipco_pll_read(cc, pll0 + BCMA_CC_PMU6_4706_PROCPLL_OFF);
	ndiv = (tmp & BCMA_CC_PMU6_4706_PROC_NDIV_INT_MASK)
		>> BCMA_CC_PMU6_4706_PROC_NDIV_INT_SHIFT;
	p1div = (tmp & BCMA_CC_PMU6_4706_PROC_P1DIV_MASK)
		>> BCMA_CC_PMU6_4706_PROC_P1DIV_SHIFT;
	p2div = (tmp & BCMA_CC_PMU6_4706_PROC_P2DIV_MASK)
		>> BCMA_CC_PMU6_4706_PROC_P2DIV_SHIFT;

	tmp = bcma_cc_read32(cc, BCMA_CC_CHIPSTAT);
	if (tmp & BCMA_CC_CHIPST_4706_PKG_OPTION)
		/* Low cost bonding: Fixed reference clock 25MHz and m = 4 */
		clock = (25000000 / 4) * ndiv * p2div / p1div;
	else
		/* Fixed reference clock 25MHz and m = 2 */
		clock = (25000000 / 2) * ndiv * p2div / p1div;

	if (m == BCMA_CC_PMU5_MAINPLL_SSB)
		clock = clock / 4;

	return clock;
}

/* query bus clock frequency for PMU-enabled chipcommon */
u32 bcma_pmu_get_bus_clock(struct bcma_drv_cc *cc)
{
	struct bcma_bus *bus = cc->core->bus;

	switch (bus->chipinfo.id) {
	case BCMA_CHIP_ID_BCM4716:
	case BCMA_CHIP_ID_BCM4748:
	case BCMA_CHIP_ID_BCM47162:
		return bcma_pmu_pll_clock(cc, BCMA_CC_PMU4716_MAINPLL_PLL0,
					  BCMA_CC_PMU5_MAINPLL_SSB);
	case BCMA_CHIP_ID_BCM5356:
		return bcma_pmu_pll_clock(cc, BCMA_CC_PMU5356_MAINPLL_PLL0,
					  BCMA_CC_PMU5_MAINPLL_SSB);
	case BCMA_CHIP_ID_BCM5357:
	case BCMA_CHIP_ID_BCM4749:
		return bcma_pmu_pll_clock(cc, BCMA_CC_PMU5357_MAINPLL_PLL0,
					  BCMA_CC_PMU5_MAINPLL_SSB);
	case BCMA_CHIP_ID_BCM4706:
		return bcma_pmu_pll_clock_bcm4706(cc,
						  BCMA_CC_PMU4706_MAINPLL_PLL0,
						  BCMA_CC_PMU5_MAINPLL_SSB);
	case BCMA_CHIP_ID_BCM53572:
		return 75000000;
	default:
		bcma_warn(bus, "No bus clock specified for %04X device, pmu rev. %d, using default %d Hz\n",
			  bus->chipinfo.id, cc->pmu.rev, BCMA_CC_PMU_HT_CLOCK);
	}
	return BCMA_CC_PMU_HT_CLOCK;
}
EXPORT_SYMBOL_GPL(bcma_pmu_get_bus_clock);

/* query cpu clock frequency for PMU-enabled chipcommon */
u32 bcma_pmu_get_cpu_clock(struct bcma_drv_cc *cc)
{
	struct bcma_bus *bus = cc->core->bus;

	if (bus->chipinfo.id == BCMA_CHIP_ID_BCM53572)
		return 300000000;

	/* New PMUs can have different clock for bus and CPU */
	if (cc->pmu.rev >= 5) {
		u32 pll;
		switch (bus->chipinfo.id) {
		case BCMA_CHIP_ID_BCM4706:
			return bcma_pmu_pll_clock_bcm4706(cc,
						BCMA_CC_PMU4706_MAINPLL_PLL0,
						BCMA_CC_PMU5_MAINPLL_CPU);
		case BCMA_CHIP_ID_BCM5356:
			pll = BCMA_CC_PMU5356_MAINPLL_PLL0;
			break;
		case BCMA_CHIP_ID_BCM5357:
		case BCMA_CHIP_ID_BCM4749:
			pll = BCMA_CC_PMU5357_MAINPLL_PLL0;
			break;
		default:
			pll = BCMA_CC_PMU4716_MAINPLL_PLL0;
			break;
		}

		return bcma_pmu_pll_clock(cc, pll, BCMA_CC_PMU5_MAINPLL_CPU);
	}

	/* On old PMUs CPU has the same clock as the bus */
	return bcma_pmu_get_bus_clock(cc);
}

static void bcma_pmu_spuravoid_pll_write(struct bcma_drv_cc *cc, u32 offset,
					 u32 value)
{
	bcma_cc_write32(cc, BCMA_CC_PLLCTL_ADDR, offset);
	bcma_cc_write32(cc, BCMA_CC_PLLCTL_DATA, value);
}

void bcma_pmu_spuravoid_pllupdate(struct bcma_drv_cc *cc, int spuravoid)
{
	u32 tmp = 0;
	u8 phypll_offset = 0;
	u8 bcm5357_bcm43236_p1div[] = {0x1, 0x5, 0x5};
	u8 bcm5357_bcm43236_ndiv[] = {0x30, 0xf6, 0xfc};
	struct bcma_bus *bus = cc->core->bus;

	switch (bus->chipinfo.id) {
	case BCMA_CHIP_ID_BCM5357:
	case BCMA_CHIP_ID_BCM4749:
	case BCMA_CHIP_ID_BCM53572:
		/* 5357[ab]0, 43236[ab]0, and 6362b0 */

		/* BCM5357 needs to touch PLL1_PLLCTL[02],
		   so offset PLL0_PLLCTL[02] by 6 */
		phypll_offset = (bus->chipinfo.id == BCMA_CHIP_ID_BCM5357 ||
		       bus->chipinfo.id == BCMA_CHIP_ID_BCM4749 ||
		       bus->chipinfo.id == BCMA_CHIP_ID_BCM53572) ? 6 : 0;

		/* RMW only the P1 divider */
		bcma_cc_write32(cc, BCMA_CC_PLLCTL_ADDR,
				BCMA_CC_PMU_PLL_CTL0 + phypll_offset);
		tmp = bcma_cc_read32(cc, BCMA_CC_PLLCTL_DATA);
		tmp &= (~(BCMA_CC_PMU1_PLL0_PC0_P1DIV_MASK));
		tmp |= (bcm5357_bcm43236_p1div[spuravoid] << BCMA_CC_PMU1_PLL0_PC0_P1DIV_SHIFT);
		bcma_cc_write32(cc, BCMA_CC_PLLCTL_DATA, tmp);

		/* RMW only the int feedback divider */
		bcma_cc_write32(cc, BCMA_CC_PLLCTL_ADDR,
				BCMA_CC_PMU_PLL_CTL2 + phypll_offset);
		tmp = bcma_cc_read32(cc, BCMA_CC_PLLCTL_DATA);
		tmp &= ~(BCMA_CC_PMU1_PLL0_PC2_NDIV_INT_MASK);
		tmp |= (bcm5357_bcm43236_ndiv[spuravoid]) << BCMA_CC_PMU1_PLL0_PC2_NDIV_INT_SHIFT;
		bcma_cc_write32(cc, BCMA_CC_PLLCTL_DATA, tmp);

		tmp = BCMA_CC_PMU_CTL_PLL_UPD;
		break;

	case BCMA_CHIP_ID_BCM4331:
	case BCMA_CHIP_ID_BCM43431:
		if (spuravoid == 2) {
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL0,
						     0x11500014);
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL2,
						     0x0FC00a08);
		} else if (spuravoid == 1) {
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL0,
						     0x11500014);
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL2,
						     0x0F600a08);
		} else {
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL0,
						     0x11100014);
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL2,
						     0x03000a08);
		}
		tmp = BCMA_CC_PMU_CTL_PLL_UPD;
		break;

	case BCMA_CHIP_ID_BCM43224:
	case BCMA_CHIP_ID_BCM43225:
	case BCMA_CHIP_ID_BCM43421:
		if (spuravoid == 1) {
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL0,
						     0x11500010);
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL1,
						     0x000C0C06);
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL2,
						     0x0F600a08);
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL3,
						     0x00000000);
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL4,
						     0x2001E920);
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL5,
						     0x88888815);
		} else {
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL0,
						     0x11100010);
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL1,
						     0x000c0c06);
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL2,
						     0x03000a08);
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL3,
						     0x00000000);
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL4,
						     0x200005c0);
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL5,
						     0x88888815);
		}
		tmp = BCMA_CC_PMU_CTL_PLL_UPD;
		break;

	case BCMA_CHIP_ID_BCM4716:
	case BCMA_CHIP_ID_BCM4748:
	case BCMA_CHIP_ID_BCM47162:
		if (spuravoid == 1) {
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL0,
						     0x11500060);
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL1,
						     0x080C0C06);
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL2,
						     0x0F600000);
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL3,
						     0x00000000);
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL4,
						     0x2001E924);
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL5,
						     0x88888815);
		} else {
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL0,
						     0x11100060);
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL1,
						     0x080c0c06);
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL2,
						     0x03000000);
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL3,
						     0x00000000);
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL4,
						     0x200005c0);
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL5,
						     0x88888815);
		}

		tmp = BCMA_CC_PMU_CTL_PLL_UPD | BCMA_CC_PMU_CTL_NOILPONW;
		break;

	case BCMA_CHIP_ID_BCM43131:
	case BCMA_CHIP_ID_BCM43217:
	case BCMA_CHIP_ID_BCM43227:
	case BCMA_CHIP_ID_BCM43228:
	case BCMA_CHIP_ID_BCM43428:
		/* LCNXN */
		/* PLL Settings for spur avoidance on/off mode,
		   no on2 support for 43228A0 */
		if (spuravoid == 1) {
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL0,
						     0x01100014);
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL1,
						     0x040C0C06);
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL2,
						     0x03140A08);
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL3,
						     0x00333333);
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL4,
						     0x202C2820);
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL5,
						     0x88888815);
		} else {
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL0,
						     0x11100014);
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL1,
						     0x040c0c06);
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL2,
						     0x03000a08);
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL3,
						     0x00000000);
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL4,
						     0x200005c0);
			bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL5,
						     0x88888815);
		}
		tmp = BCMA_CC_PMU_CTL_PLL_UPD;
		break;
	default:
		bcma_err(bus, "Unknown spuravoidance settings for chip 0x%04X, not changing PLL\n",
			 bus->chipinfo.id);
		break;
	}

	tmp |= bcma_cc_read32(cc, BCMA_CC_PMU_CTL);
	bcma_cc_write32(cc, BCMA_CC_PMU_CTL, tmp);
}
EXPORT_SYMBOL_GPL(bcma_pmu_spuravoid_pllupdate);