summaryrefslogtreecommitdiffstats
path: root/drivers/ssb/driver_chipcommon_pmu.c
blob: 4aaddeec55a2697664d53f0aa52e3a5d84a8331a (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
/*
 * Sonics Silicon Backplane
 * Broadcom ChipCommon Power Management Unit driver
 *
 * Copyright 2009, Michael Buesch <mb@bu3sch.de>
 * Copyright 2007, Broadcom Corporation
 *
 * Licensed under the GNU/GPL. See COPYING for details.
 */

#include <linux/ssb/ssb.h>
#include <linux/ssb/ssb_regs.h>
#include <linux/ssb/ssb_driver_chipcommon.h>
#include <linux/delay.h>

#include "ssb_private.h"

static u32 ssb_chipco_pll_read(struct ssb_chipcommon *cc, u32 offset)
{
	chipco_write32(cc, SSB_CHIPCO_PLLCTL_ADDR, offset);
	return chipco_read32(cc, SSB_CHIPCO_PLLCTL_DATA);
}

static void ssb_chipco_pll_write(struct ssb_chipcommon *cc,
				 u32 offset, u32 value)
{
	chipco_write32(cc, SSB_CHIPCO_PLLCTL_ADDR, offset);
	chipco_write32(cc, SSB_CHIPCO_PLLCTL_DATA, value);
}

struct pmu0_plltab_entry {
	u16 freq;	/* Crystal frequency in kHz.*/
	u8 xf;		/* Crystal frequency value for PMU control */
	u8 wb_int;
	u32 wb_frac;
};

static const struct pmu0_plltab_entry pmu0_plltab[] = {
	{ .freq = 12000, .xf =  1, .wb_int = 73, .wb_frac = 349525, },
	{ .freq = 13000, .xf =  2, .wb_int = 67, .wb_frac = 725937, },
	{ .freq = 14400, .xf =  3, .wb_int = 61, .wb_frac = 116508, },
	{ .freq = 15360, .xf =  4, .wb_int = 57, .wb_frac = 305834, },
	{ .freq = 16200, .xf =  5, .wb_int = 54, .wb_frac = 336579, },
	{ .freq = 16800, .xf =  6, .wb_int = 52, .wb_frac = 399457, },
	{ .freq = 19200, .xf =  7, .wb_int = 45, .wb_frac = 873813, },
	{ .freq = 19800, .xf =  8, .wb_int = 44, .wb_frac = 466033, },
	{ .freq = 20000, .xf =  9, .wb_int = 44, .wb_frac = 0,      },
	{ .freq = 25000, .xf = 10, .wb_int = 70, .wb_frac = 419430, },
	{ .freq = 26000, .xf = 11, .wb_int = 67, .wb_frac = 725937, },
	{ .freq = 30000, .xf = 12, .wb_int = 58, .wb_frac = 699050, },
	{ .freq = 38400, .xf = 13, .wb_int = 45, .wb_frac = 873813, },
	{ .freq = 40000, .xf = 14, .wb_int = 45, .wb_frac = 0,      },
};
#define SSB_PMU0_DEFAULT_XTALFREQ	20000

static const struct pmu0_plltab_entry * pmu0_plltab_find_entry(u32 crystalfreq)
{
	const struct pmu0_plltab_entry *e;
	unsigned int i;

	for (i = 0; i < ARRAY_SIZE(pmu0_plltab); i++) {
		e = &pmu0_plltab[i];
		if (e->freq == crystalfreq)
			return e;
	}

	return NULL;
}

/* Tune the PLL to the crystal speed. crystalfreq is in kHz. */
static void ssb_pmu0_pllinit_r0(struct ssb_chipcommon *cc,
				u32 crystalfreq)
{
	struct ssb_bus *bus = cc->dev->bus;
	const struct pmu0_plltab_entry *e = NULL;
	u32 pmuctl, tmp, pllctl;
	unsigned int i;

	if ((bus->chip_id == 0x5354) && !crystalfreq) {
		/* The 5354 crystal freq is 25MHz */
		crystalfreq = 25000;
	}
	if (crystalfreq)
		e = pmu0_plltab_find_entry(crystalfreq);
	if (!e)
		e = pmu0_plltab_find_entry(SSB_PMU0_DEFAULT_XTALFREQ);
	BUG_ON(!e);
	crystalfreq = e->freq;
	cc->pmu.crystalfreq = e->freq;

	/* Check if the PLL already is programmed to this frequency. */
	pmuctl = chipco_read32(cc, SSB_CHIPCO_PMU_CTL);
	if (((pmuctl & SSB_CHIPCO_PMU_CTL_XTALFREQ) >> SSB_CHIPCO_PMU_CTL_XTALFREQ_SHIFT) == e->xf) {
		/* We're already there... */
		return;
	}

	ssb_printk(KERN_INFO PFX "Programming PLL to %u.%03u MHz\n",
		   (crystalfreq / 1000), (crystalfreq % 1000));

	/* First turn the PLL off. */
	switch (bus->chip_id) {
	case 0x4328:
		chipco_mask32(cc, SSB_CHIPCO_PMU_MINRES_MSK,
			      ~(1 << SSB_PMURES_4328_BB_PLL_PU));
		chipco_mask32(cc, SSB_CHIPCO_PMU_MAXRES_MSK,
			      ~(1 << SSB_PMURES_4328_BB_PLL_PU));
		break;
	case 0x5354:
		chipco_mask32(cc, SSB_CHIPCO_PMU_MINRES_MSK,
			      ~(1 << SSB_PMURES_5354_BB_PLL_PU));
		chipco_mask32(cc, SSB_CHIPCO_PMU_MAXRES_MSK,
			      ~(1 << SSB_PMURES_5354_BB_PLL_PU));
		break;
	default:
		SSB_WARN_ON(1);
	}
	for (i = 1500; i; i--) {
		tmp = chipco_read32(cc, SSB_CHIPCO_CLKCTLST);
		if (!(tmp & SSB_CHIPCO_CLKCTLST_HAVEHT))
			break;
		udelay(10);
	}
	tmp = chipco_read32(cc, SSB_CHIPCO_CLKCTLST);
	if (tmp & SSB_CHIPCO_CLKCTLST_HAVEHT)
		ssb_printk(KERN_EMERG PFX "Failed to turn the PLL off!\n");

	/* Set PDIV in PLL control 0. */
	pllctl = ssb_chipco_pll_read(cc, SSB_PMU0_PLLCTL0);
	if (crystalfreq >= SSB_PMU0_PLLCTL0_PDIV_FREQ)
		pllctl |= SSB_PMU0_PLLCTL0_PDIV_MSK;
	else
		pllctl &= ~SSB_PMU0_PLLCTL0_PDIV_MSK;
	ssb_chipco_pll_write(cc, SSB_PMU0_PLLCTL0, pllctl);

	/* Set WILD in PLL control 1. */
	pllctl = ssb_chipco_pll_read(cc, SSB_PMU0_PLLCTL1);
	pllctl &= ~SSB_PMU0_PLLCTL1_STOPMOD;
	pllctl &= ~(SSB_PMU0_PLLCTL1_WILD_IMSK | SSB_PMU0_PLLCTL1_WILD_FMSK);
	pllctl |= ((u32)e->wb_int << SSB_PMU0_PLLCTL1_WILD_IMSK_SHIFT) & SSB_PMU0_PLLCTL1_WILD_IMSK;
	pllctl |= ((u32)e->wb_frac << SSB_PMU0_PLLCTL1_WILD_FMSK_SHIFT) & SSB_PMU0_PLLCTL1_WILD_FMSK;
	if (e->wb_frac == 0)
		pllctl |= SSB_PMU0_PLLCTL1_STOPMOD;
	ssb_chipco_pll_write(cc, SSB_PMU0_PLLCTL1, pllctl);

	/* Set WILD in PLL control 2. */
	pllctl = ssb_chipco_pll_read(cc, SSB_PMU0_PLLCTL2);
	pllctl &= ~SSB_PMU0_PLLCTL2_WILD_IMSKHI;
	pllctl |= (((u32)e->wb_int >> 4) << SSB_PMU0_PLLCTL2_WILD_IMSKHI_SHIFT) & SSB_PMU0_PLLCTL2_WILD_IMSKHI;
	ssb_chipco_pll_write(cc, SSB_PMU0_PLLCTL2, pllctl);

	/* Set the crystalfrequency and the divisor. */
	pmuctl = chipco_read32(cc, SSB_CHIPCO_PMU_CTL);
	pmuctl &= ~SSB_CHIPCO_PMU_CTL_ILP_DIV;
	pmuctl |= (((crystalfreq + 127) / 128 - 1) << SSB_CHIPCO_PMU_CTL_ILP_DIV_SHIFT)
			& SSB_CHIPCO_PMU_CTL_ILP_DIV;
	pmuctl &= ~SSB_CHIPCO_PMU_CTL_XTALFREQ;
	pmuctl |= ((u32)e->xf << SSB_CHIPCO_PMU_CTL_XTALFREQ_SHIFT) & SSB_CHIPCO_PMU_CTL_XTALFREQ;
	chipco_write32(cc, SSB_CHIPCO_PMU_CTL, pmuctl);
}

struct pmu1_plltab_entry {
	u16 freq;	/* Crystal frequency in kHz.*/
	u8 xf;		/* Crystal frequency value for PMU control */
	u8 ndiv_int;
	u32 ndiv_frac;
	u8 p1div;
	u8 p2div;
};

static const struct pmu1_plltab_entry pmu1_plltab[] = {
	{ .freq = 12000, .xf =  1, .p1div = 3, .p2div = 22, .ndiv_int =  0x9, .ndiv_frac = 0xFFFFEF, },
	{ .freq = 13000, .xf =  2, .p1div = 1, .p2div =  6, .ndiv_int =  0xb, .ndiv_frac = 0x483483, },
	{ .freq = 14400, .xf =  3, .p1div = 1, .p2div = 10, .ndiv_int =  0xa, .ndiv_frac = 0x1C71C7, },
	{ .freq = 15360, .xf =  4, .p1div = 1, .p2div =  5, .ndiv_int =  0xb, .ndiv_frac = 0x755555, },
	{ .freq = 16200, .xf =  5, .p1div = 1, .p2div = 10, .ndiv_int =  0x5, .ndiv_frac = 0x6E9E06, },
	{ .freq = 16800, .xf =  6, .p1div = 1, .p2div = 10, .ndiv_int =  0x5, .ndiv_frac = 0x3CF3CF, },
	{ .freq = 19200, .xf =  7, .p1div = 1, .p2div =  9, .ndiv_int =  0x5, .ndiv_frac = 0x17B425, },
	{ .freq = 19800, .xf =  8, .p1div = 1, .p2div = 11, .ndiv_int =  0x4, .ndiv_frac = 0xA57EB,  },
	{ .freq = 20000, .xf =  9, .p1div = 1, .p2div = 11, .ndiv_int =  0x4, .ndiv_frac = 0,        },
	{ .freq = 24000, .xf = 10, .p1div = 3, .p2div = 11, .ndiv_int =  0xa, .ndiv_frac = 0,        },
	{ .freq = 25000, .xf = 11, .p1div = 5, .p2div = 16, .ndiv_int =  0xb, .ndiv_frac = 0,        },
	{ .freq = 26000, .xf = 12, .p1div = 1, .p2div =  2, .ndiv_int = 0x10, .ndiv_frac = 0xEC4EC4, },
	{ .freq = 30000, .xf = 13, .p1div = 3, .p2div =  8, .ndiv_int =  0xb, .ndiv_frac = 0,        },
	{ .freq = 38400, .xf = 14, .p1div = 1, .p2div =  5, .ndiv_int =  0x4, .ndiv_frac = 0x955555, },
	{ .freq = 40000, .xf = 15, .p1div = 1, .p2div =  2, .ndiv_int =  0xb, .ndiv_frac = 0,        },
};

#define SSB_PMU1_DEFAULT_XTALFREQ	15360

static const struct pmu1_plltab_entry * pmu1_plltab_find_entry(u32 crystalfreq)
{
	const struct pmu1_plltab_entry *e;
	unsigned int i;

	for (i = 0; i < ARRAY_SIZE(pmu1_plltab); i++) {
		e = &pmu1_plltab[i];
		if (e->freq == crystalfreq)
			return e;
	}

	return NULL;
}

/* Tune the PLL to the crystal speed. crystalfreq is in kHz. */
static void ssb_pmu1_pllinit_r0(struct ssb_chipcommon *cc,
				u32 crystalfreq)
{
	struct ssb_bus *bus = cc->dev->bus;
	const struct pmu1_plltab_entry *e = NULL;
	u32 buffer_strength = 0;
	u32 tmp, pllctl, pmuctl;
	unsigned int i;

	if (bus->chip_id == 0x4312) {
		/* We do not touch the BCM4312 PLL and assume
		 * the default crystal settings work out-of-the-box. */
		cc->pmu.crystalfreq = 20000;
		return;
	}

	if (crystalfreq)
		e = pmu1_plltab_find_entry(crystalfreq);
	if (!e)
		e = pmu1_plltab_find_entry(SSB_PMU1_DEFAULT_XTALFREQ);
	BUG_ON(!e);
	crystalfreq = e->freq;
	cc->pmu.crystalfreq = e->freq;

	/* Check if the PLL already is programmed to this frequency. */
	pmuctl = chipco_read32(cc, SSB_CHIPCO_PMU_CTL);
	if (((pmuctl & SSB_CHIPCO_PMU_CTL_XTALFREQ) >> SSB_CHIPCO_PMU_CTL_XTALFREQ_SHIFT) == e->xf) {
		/* We're already there... */
		return;
	}

	ssb_printk(KERN_INFO PFX "Programming PLL to %u.%03u MHz\n",
		   (crystalfreq / 1000), (crystalfreq % 1000));

	/* First turn the PLL off. */
	switch (bus->chip_id) {
	case 0x4325:
		chipco_mask32(cc, SSB_CHIPCO_PMU_MINRES_MSK,
			      ~((1 << SSB_PMURES_4325_BBPLL_PWRSW_PU) |
				(1 << SSB_PMURES_4325_HT_AVAIL)));
		chipco_mask32(cc, SSB_CHIPCO_PMU_MAXRES_MSK,
			      ~((1 << SSB_PMURES_4325_BBPLL_PWRSW_PU) |
				(1 << SSB_PMURES_4325_HT_AVAIL)));
		/* Adjust the BBPLL to 2 on all channels later. */
		buffer_strength = 0x222222;
		break;
	default:
		SSB_WARN_ON(1);
	}
	for (i = 1500; i; i--) {
		tmp = chipco_read32(cc, SSB_CHIPCO_CLKCTLST);
		if (!(tmp & SSB_CHIPCO_CLKCTLST_HAVEHT))
			break;
		udelay(10);
	}
	tmp = chipco_read32(cc, SSB_CHIPCO_CLKCTLST);
	if (tmp & SSB_CHIPCO_CLKCTLST_HAVEHT)
		ssb_printk(KERN_EMERG PFX "Failed to turn the PLL off!\n");

	/* Set p1div and p2div. */
	pllctl = ssb_chipco_pll_read(cc, SSB_PMU1_PLLCTL0);
	pllctl &= ~(SSB_PMU1_PLLCTL0_P1DIV | SSB_PMU1_PLLCTL0_P2DIV);
	pllctl |= ((u32)e->p1div << SSB_PMU1_PLLCTL0_P1DIV_SHIFT) & SSB_PMU1_PLLCTL0_P1DIV;
	pllctl |= ((u32)e->p2div << SSB_PMU1_PLLCTL0_P2DIV_SHIFT) & SSB_PMU1_PLLCTL0_P2DIV;
	ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL0, pllctl);

	/* Set ndiv int and ndiv mode */
	pllctl = ssb_chipco_pll_read(cc, SSB_PMU1_PLLCTL2);
	pllctl &= ~(SSB_PMU1_PLLCTL2_NDIVINT | SSB_PMU1_PLLCTL2_NDIVMODE);
	pllctl |= ((u32)e->ndiv_int << SSB_PMU1_PLLCTL2_NDIVINT_SHIFT) & SSB_PMU1_PLLCTL2_NDIVINT;
	pllctl |= (1 << SSB_PMU1_PLLCTL2_NDIVMODE_SHIFT) & SSB_PMU1_PLLCTL2_NDIVMODE;
	ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL2, pllctl);

	/* Set ndiv frac */
	pllctl = ssb_chipco_pll_read(cc, SSB_PMU1_PLLCTL3);
	pllctl &= ~SSB_PMU1_PLLCTL3_NDIVFRAC;
	pllctl |= ((u32)e->ndiv_frac << SSB_PMU1_PLLCTL3_NDIVFRAC_SHIFT) & SSB_PMU1_PLLCTL3_NDIVFRAC;
	ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL3, pllctl);

	/* Change the drive strength, if required. */
	if (buffer_strength) {
		pllctl = ssb_chipco_pll_read(cc, SSB_PMU1_PLLCTL5);
		pllctl &= ~SSB_PMU1_PLLCTL5_CLKDRV;
		pllctl |= (buffer_strength << SSB_PMU1_PLLCTL5_CLKDRV_SHIFT) & SSB_PMU1_PLLCTL5_CLKDRV;
		ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL5, pllctl);
	}

	/* Tune the crystalfreq and the divisor. */
	pmuctl = chipco_read32(cc, SSB_CHIPCO_PMU_CTL);
	pmuctl &= ~(SSB_CHIPCO_PMU_CTL_ILP_DIV | SSB_CHIPCO_PMU_CTL_XTALFREQ);
	pmuctl |= ((((u32)e->freq + 127) / 128 - 1) << SSB_CHIPCO_PMU_CTL_ILP_DIV_SHIFT)
			& SSB_CHIPCO_PMU_CTL_ILP_DIV;
	pmuctl |= ((u32)e->xf << SSB_CHIPCO_PMU_CTL_XTALFREQ_SHIFT) & SSB_CHIPCO_PMU_CTL_XTALFREQ;
	chipco_write32(cc, SSB_CHIPCO_PMU_CTL, pmuctl);
}

static void ssb_pmu_pll_init(struct ssb_chipcommon *cc)
{
	struct ssb_bus *bus = cc->dev->bus;
	u32 crystalfreq = 0; /* in kHz. 0 = keep default freq. */

	if (bus->bustype == SSB_BUSTYPE_SSB) {
		/* TODO: The user may override the crystal frequency. */
	}

	switch (bus->chip_id) {
	case 0x4312:
	case 0x4325:
		ssb_pmu1_pllinit_r0(cc, crystalfreq);
		break;
	case 0x4328:
	case 0x5354:
		ssb_pmu0_pllinit_r0(cc, crystalfreq);
		break;
	default:
		ssb_printk(KERN_ERR PFX
			   "ERROR: PLL init unknown for device %04X\n",
			   bus->chip_id);
	}
}

struct pmu_res_updown_tab_entry {
	u8 resource;	/* The resource number */
	u16 updown;	/* The updown value */
};

enum pmu_res_depend_tab_task {
	PMU_RES_DEP_SET = 1,
	PMU_RES_DEP_ADD,
	PMU_RES_DEP_REMOVE,
};

struct pmu_res_depend_tab_entry {
	u8 resource;	/* The resource number */
	u8 task;	/* SET | ADD | REMOVE */
	u32 depend;	/* The depend mask */
};

static const struct pmu_res_updown_tab_entry pmu_res_updown_tab_4328a0[] = {
	{ .resource = SSB_PMURES_4328_EXT_SWITCHER_PWM,		.updown = 0x0101, },
	{ .resource = SSB_PMURES_4328_BB_SWITCHER_PWM,		.updown = 0x1F01, },
	{ .resource = SSB_PMURES_4328_BB_SWITCHER_BURST,	.updown = 0x010F, },
	{ .resource = SSB_PMURES_4328_BB_EXT_SWITCHER_BURST,	.updown = 0x0101, },
	{ .resource = SSB_PMURES_4328_ILP_REQUEST,		.updown = 0x0202, },
	{ .resource = SSB_PMURES_4328_RADIO_SWITCHER_PWM,	.updown = 0x0F01, },
	{ .resource = SSB_PMURES_4328_RADIO_SWITCHER_BURST,	.updown = 0x0F01, },
	{ .resource = SSB_PMURES_4328_ROM_SWITCH,		.updown = 0x0101, },
	{ .resource = SSB_PMURES_4328_PA_REF_LDO,		.updown = 0x0F01, },
	{ .resource = SSB_PMURES_4328_RADIO_LDO,		.updown = 0x0F01, },
	{ .resource = SSB_PMURES_4328_AFE_LDO,			.updown = 0x0F01, },
	{ .resource = SSB_PMURES_4328_PLL_LDO,			.updown = 0x0F01, },
	{ .resource = SSB_PMURES_4328_BG_FILTBYP,		.updown = 0x0101, },
	{ .resource = SSB_PMURES_4328_TX_FILTBYP,		.updown = 0x0101, },
	{ .resource = SSB_PMURES_4328_RX_FILTBYP,		.updown = 0x0101, },
	{ .resource = SSB_PMURES_4328_XTAL_PU,			.updown = 0x0101, },
	{ .resource = SSB_PMURES_4328_XTAL_EN,			.updown = 0xA001, },
	{ .resource = SSB_PMURES_4328_BB_PLL_FILTBYP,		.updown = 0x0101, },
	{ .resource = SSB_PMURES_4328_RF_PLL_FILTBYP,		.updown = 0x0101, },
	{ .resource = SSB_PMURES_4328_BB_PLL_PU,		.updown = 0x0701, },
};

static const struct pmu_res_depend_tab_entry pmu_res_depend_tab_4328a0[] = {
	{
		/* Adjust ILP Request to avoid forcing EXT/BB into burst mode. */
		.resource = SSB_PMURES_4328_ILP_REQUEST,
		.task = PMU_RES_DEP_SET,
		.depend = ((1 << SSB_PMURES_4328_EXT_SWITCHER_PWM) |
			   (1 << SSB_PMURES_4328_BB_SWITCHER_PWM)),
	},
};

static const struct pmu_res_updown_tab_entry pmu_res_updown_tab_4325a0[] = {
	{ .resource = SSB_PMURES_4325_XTAL_PU,			.updown = 0x1501, },
};

static const struct pmu_res_depend_tab_entry pmu_res_depend_tab_4325a0[] = {
	{
		/* Adjust HT-Available dependencies. */
		.resource = SSB_PMURES_4325_HT_AVAIL,
		.task = PMU_RES_DEP_ADD,
		.depend = ((1 << SSB_PMURES_4325_RX_PWRSW_PU) |
			   (1 << SSB_PMURES_4325_TX_PWRSW_PU) |
			   (1 << SSB_PMURES_4325_LOGEN_PWRSW_PU) |
			   (1 << SSB_PMURES_4325_AFE_PWRSW_PU)),
	},
};

static void ssb_pmu_resources_init(struct ssb_chipcommon *cc)
{
	struct ssb_bus *bus = cc->dev->bus;
	u32 min_msk = 0, max_msk = 0;
	unsigned int i;
	const struct pmu_res_updown_tab_entry *updown_tab = NULL;
	unsigned int updown_tab_size;
	const struct pmu_res_depend_tab_entry *depend_tab = NULL;
	unsigned int depend_tab_size;

	switch (bus->chip_id) {
	case 0x4312:
		/* We keep the default settings:
		 * min_msk = 0xCBB
		 * max_msk = 0x7FFFF
		 */
		break;
	case 0x4325:
		/* Power OTP down later. */
		min_msk = (1 << SSB_PMURES_4325_CBUCK_BURST) |
			  (1 << SSB_PMURES_4325_LNLDO2_PU);
		if (chipco_read32(cc, SSB_CHIPCO_CHIPSTAT) &
		    SSB_CHIPCO_CHST_4325_PMUTOP_2B)
			min_msk |= (1 << SSB_PMURES_4325_CLDO_CBUCK_BURST);
		/* The PLL may turn on, if it decides so. */
		max_msk = 0xFFFFF;
		updown_tab = pmu_res_updown_tab_4325a0;
		updown_tab_size = ARRAY_SIZE(pmu_res_updown_tab_4325a0);
		depend_tab = pmu_res_depend_tab_4325a0;
		depend_tab_size = ARRAY_SIZE(pmu_res_depend_tab_4325a0);
		break;
	case 0x4328:
		min_msk = (1 << SSB_PMURES_4328_EXT_SWITCHER_PWM) |
			  (1 << SSB_PMURES_4328_BB_SWITCHER_PWM) |
			  (1 << SSB_PMURES_4328_XTAL_EN);
		/* The PLL may turn on, if it decides so. */
		max_msk = 0xFFFFF;
		updown_tab = pmu_res_updown_tab_4328a0;
		updown_tab_size = ARRAY_SIZE(pmu_res_updown_tab_4328a0);
		depend_tab = pmu_res_depend_tab_4328a0;
		depend_tab_size = ARRAY_SIZE(pmu_res_depend_tab_4328a0);
		break;
	case 0x5354:
		/* The PLL may turn on, if it decides so. */
		max_msk = 0xFFFFF;
		break;
	default:
		ssb_printk(KERN_ERR PFX
			   "ERROR: PMU resource config unknown for device %04X\n",
			   bus->chip_id);
	}

	if (updown_tab) {
		for (i = 0; i < updown_tab_size; i++) {
			chipco_write32(cc, SSB_CHIPCO_PMU_RES_TABSEL,
				       updown_tab[i].resource);
			chipco_write32(cc, SSB_CHIPCO_PMU_RES_UPDNTM,
				       updown_tab[i].updown);
		}
	}
	if (depend_tab) {
		for (i = 0; i < depend_tab_size; i++) {
			chipco_write32(cc, SSB_CHIPCO_PMU_RES_TABSEL,
				       depend_tab[i].resource);
			switch (depend_tab[i].task) {
			case PMU_RES_DEP_SET:
				chipco_write32(cc, SSB_CHIPCO_PMU_RES_DEPMSK,
					       depend_tab[i].depend);
				break;
			case PMU_RES_DEP_ADD:
				chipco_set32(cc, SSB_CHIPCO_PMU_RES_DEPMSK,
					     depend_tab[i].depend);
				break;
			case PMU_RES_DEP_REMOVE:
				chipco_mask32(cc, SSB_CHIPCO_PMU_RES_DEPMSK,
					      ~(depend_tab[i].depend));
				break;
			default:
				SSB_WARN_ON(1);
			}
		}
	}

	/* Set the resource masks. */
	if (min_msk)
		chipco_write32(cc, SSB_CHIPCO_PMU_MINRES_MSK, min_msk);
	if (max_msk)
		chipco_write32(cc, SSB_CHIPCO_PMU_MAXRES_MSK, max_msk);
}

void ssb_pmu_init(struct ssb_chipcommon *cc)
{
	struct ssb_bus *bus = cc->dev->bus;
	u32 pmucap;

	if (!(cc->capabilities & SSB_CHIPCO_CAP_PMU))
		return;

	pmucap = chipco_read32(cc, SSB_CHIPCO_PMU_CAP);
	cc->pmu.rev = (pmucap & SSB_CHIPCO_PMU_CAP_REVISION);

	ssb_dprintk(KERN_DEBUG PFX "Found rev %u PMU (capabilities 0x%08X)\n",
		    cc->pmu.rev, pmucap);

	if (cc->pmu.rev >= 1) {
		if ((bus->chip_id == 0x4325) && (bus->chip_rev < 2)) {
			chipco_mask32(cc, SSB_CHIPCO_PMU_CTL,
				      ~SSB_CHIPCO_PMU_CTL_NOILPONW);
		} else {
			chipco_set32(cc, SSB_CHIPCO_PMU_CTL,
				     SSB_CHIPCO_PMU_CTL_NOILPONW);
		}
	}
	ssb_pmu_pll_init(cc);
	ssb_pmu_resources_init(cc);
}
OpenPOWER on IntegriCloud