summaryrefslogtreecommitdiffstats
path: root/drivers/clk/qcom/lcc-ipq806x.c
blob: 93ad42b1436604be66fcbb8081932879929fd823 (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
/*
 * Copyright (c) 2014, The Linux Foundation. All rights reserved.
 *
 * This software is licensed under the terms of the GNU General Public
 * License version 2, as published by the Free Software Foundation, and
 * may be copied, distributed, and modified under those terms.
 *
 * 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.
 */

#include <linux/kernel.h>
#include <linux/bitops.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/clk-provider.h>
#include <linux/regmap.h>

#include <dt-bindings/clock/qcom,lcc-ipq806x.h>

#include "common.h"
#include "clk-regmap.h"
#include "clk-pll.h"
#include "clk-rcg.h"
#include "clk-branch.h"
#include "clk-regmap-divider.h"
#include "clk-regmap-mux.h"

static struct clk_pll pll4 = {
	.l_reg = 0x4,
	.m_reg = 0x8,
	.n_reg = 0xc,
	.config_reg = 0x14,
	.mode_reg = 0x0,
	.status_reg = 0x18,
	.status_bit = 16,
	.clkr.hw.init = &(struct clk_init_data){
		.name = "pll4",
		.parent_names = (const char *[]){ "pxo" },
		.num_parents = 1,
		.ops = &clk_pll_ops,
	},
};

static const struct pll_config pll4_config = {
	.l = 0xf,
	.m = 0x91,
	.n = 0xc7,
	.vco_val = 0x0,
	.vco_mask = BIT(17) | BIT(16),
	.pre_div_val = 0x0,
	.pre_div_mask = BIT(19),
	.post_div_val = 0x0,
	.post_div_mask = BIT(21) | BIT(20),
	.mn_ena_mask = BIT(22),
	.main_output_mask = BIT(23),
};

enum {
	P_PXO,
	P_PLL4,
};

static const struct parent_map lcc_pxo_pll4_map[] = {
	{ P_PXO, 0 },
	{ P_PLL4, 2 }
};

static const char * const lcc_pxo_pll4[] = {
	"pxo",
	"pll4_vote",
};

static struct freq_tbl clk_tbl_aif_mi2s[] = {
	{  1024000, P_PLL4, 4,  1,  96 },
	{  1411200, P_PLL4, 4,  2, 139 },
	{  1536000, P_PLL4, 4,  1,  64 },
	{  2048000, P_PLL4, 4,  1,  48 },
	{  2116800, P_PLL4, 4,  2,  93 },
	{  2304000, P_PLL4, 4,  2,  85 },
	{  2822400, P_PLL4, 4,  6, 209 },
	{  3072000, P_PLL4, 4,  1,  32 },
	{  3175200, P_PLL4, 4,  1,  31 },
	{  4096000, P_PLL4, 4,  1,  24 },
	{  4233600, P_PLL4, 4,  9, 209 },
	{  4608000, P_PLL4, 4,  3,  64 },
	{  5644800, P_PLL4, 4, 12, 209 },
	{  6144000, P_PLL4, 4,  1,  16 },
	{  6350400, P_PLL4, 4,  2,  31 },
	{  8192000, P_PLL4, 4,  1,  12 },
	{  8467200, P_PLL4, 4, 18, 209 },
	{  9216000, P_PLL4, 4,  3,  32 },
	{ 11289600, P_PLL4, 4, 24, 209 },
	{ 12288000, P_PLL4, 4,  1,   8 },
	{ 12700800, P_PLL4, 4, 27, 209 },
	{ 13824000, P_PLL4, 4,  9,  64 },
	{ 16384000, P_PLL4, 4,  1,   6 },
	{ 16934400, P_PLL4, 4, 41, 238 },
	{ 18432000, P_PLL4, 4,  3,  16 },
	{ 22579200, P_PLL4, 2, 24, 209 },
	{ 24576000, P_PLL4, 4,  1,   4 },
	{ 27648000, P_PLL4, 4,  9,  32 },
	{ 33868800, P_PLL4, 4, 41, 119 },
	{ 36864000, P_PLL4, 4,  3,   8 },
	{ 45158400, P_PLL4, 1, 24, 209 },
	{ 49152000, P_PLL4, 4,  1,   2 },
	{ 50803200, P_PLL4, 1, 27, 209 },
	{ }
};

static struct clk_rcg mi2s_osr_src = {
	.ns_reg = 0x48,
	.md_reg = 0x4c,
	.mn = {
		.mnctr_en_bit = 8,
		.mnctr_reset_bit = 7,
		.mnctr_mode_shift = 5,
		.n_val_shift = 24,
		.m_val_shift = 8,
		.width = 8,
	},
	.p = {
		.pre_div_shift = 3,
		.pre_div_width = 2,
	},
	.s = {
		.src_sel_shift = 0,
		.parent_map = lcc_pxo_pll4_map,
	},
	.freq_tbl = clk_tbl_aif_mi2s,
	.clkr = {
		.enable_reg = 0x48,
		.enable_mask = BIT(9),
		.hw.init = &(struct clk_init_data){
			.name = "mi2s_osr_src",
			.parent_names = lcc_pxo_pll4,
			.num_parents = 2,
			.ops = &clk_rcg_ops,
			.flags = CLK_SET_RATE_GATE,
		},
	},
};

static const char * const lcc_mi2s_parents[] = {
	"mi2s_osr_src",
};

static struct clk_branch mi2s_osr_clk = {
	.halt_reg = 0x50,
	.halt_bit = 1,
	.halt_check = BRANCH_HALT_ENABLE,
	.clkr = {
		.enable_reg = 0x48,
		.enable_mask = BIT(17),
		.hw.init = &(struct clk_init_data){
			.name = "mi2s_osr_clk",
			.parent_names = lcc_mi2s_parents,
			.num_parents = 1,
			.ops = &clk_branch_ops,
			.flags = CLK_SET_RATE_PARENT,
		},
	},
};

static struct clk_regmap_div mi2s_div_clk = {
	.reg = 0x48,
	.shift = 10,
	.width = 4,
	.clkr = {
		.hw.init = &(struct clk_init_data){
			.name = "mi2s_div_clk",
			.parent_names = lcc_mi2s_parents,
			.num_parents = 1,
			.ops = &clk_regmap_div_ops,
		},
	},
};

static struct clk_branch mi2s_bit_div_clk = {
	.halt_reg = 0x50,
	.halt_bit = 0,
	.halt_check = BRANCH_HALT_ENABLE,
	.clkr = {
		.enable_reg = 0x48,
		.enable_mask = BIT(15),
		.hw.init = &(struct clk_init_data){
			.name = "mi2s_bit_div_clk",
			.parent_names = (const char *[]){ "mi2s_div_clk" },
			.num_parents = 1,
			.ops = &clk_branch_ops,
			.flags = CLK_SET_RATE_PARENT,
		},
	},
};


static struct clk_regmap_mux mi2s_bit_clk = {
	.reg = 0x48,
	.shift = 14,
	.width = 1,
	.clkr = {
		.hw.init = &(struct clk_init_data){
			.name = "mi2s_bit_clk",
			.parent_names = (const char *[]){
				"mi2s_bit_div_clk",
				"mi2s_codec_clk",
			},
			.num_parents = 2,
			.ops = &clk_regmap_mux_closest_ops,
			.flags = CLK_SET_RATE_PARENT,
		},
	},
};

static struct freq_tbl clk_tbl_pcm[] = {
	{   64000, P_PLL4, 4, 1, 1536 },
	{  128000, P_PLL4, 4, 1,  768 },
	{  256000, P_PLL4, 4, 1,  384 },
	{  512000, P_PLL4, 4, 1,  192 },
	{ 1024000, P_PLL4, 4, 1,   96 },
	{ 2048000, P_PLL4, 4, 1,   48 },
	{ },
};

static struct clk_rcg pcm_src = {
	.ns_reg = 0x54,
	.md_reg = 0x58,
	.mn = {
		.mnctr_en_bit = 8,
		.mnctr_reset_bit = 7,
		.mnctr_mode_shift = 5,
		.n_val_shift = 16,
		.m_val_shift = 16,
		.width = 16,
	},
	.p = {
		.pre_div_shift = 3,
		.pre_div_width = 2,
	},
	.s = {
		.src_sel_shift = 0,
		.parent_map = lcc_pxo_pll4_map,
	},
	.freq_tbl = clk_tbl_pcm,
	.clkr = {
		.enable_reg = 0x54,
		.enable_mask = BIT(9),
		.hw.init = &(struct clk_init_data){
			.name = "pcm_src",
			.parent_names = lcc_pxo_pll4,
			.num_parents = 2,
			.ops = &clk_rcg_ops,
			.flags = CLK_SET_RATE_GATE,
		},
	},
};

static struct clk_branch pcm_clk_out = {
	.halt_reg = 0x5c,
	.halt_bit = 0,
	.halt_check = BRANCH_HALT_ENABLE,
	.clkr = {
		.enable_reg = 0x54,
		.enable_mask = BIT(11),
		.hw.init = &(struct clk_init_data){
			.name = "pcm_clk_out",
			.parent_names = (const char *[]){ "pcm_src" },
			.num_parents = 1,
			.ops = &clk_branch_ops,
			.flags = CLK_SET_RATE_PARENT,
		},
	},
};

static struct clk_regmap_mux pcm_clk = {
	.reg = 0x54,
	.shift = 10,
	.width = 1,
	.clkr = {
		.hw.init = &(struct clk_init_data){
			.name = "pcm_clk",
			.parent_names = (const char *[]){
				"pcm_clk_out",
				"pcm_codec_clk",
			},
			.num_parents = 2,
			.ops = &clk_regmap_mux_closest_ops,
			.flags = CLK_SET_RATE_PARENT,
		},
	},
};

static struct freq_tbl clk_tbl_aif_osr[] = {
	{  2822400, P_PLL4, 1, 147, 20480 },
	{  4096000, P_PLL4, 1,   1,    96 },
	{  5644800, P_PLL4, 1, 147, 10240 },
	{  6144000, P_PLL4, 1,   1,    64 },
	{ 11289600, P_PLL4, 1, 147,  5120 },
	{ 12288000, P_PLL4, 1,   1,    32 },
	{ 22579200, P_PLL4, 1, 147,  2560 },
	{ 24576000, P_PLL4, 1,   1,    16 },
	{ },
};

static struct clk_rcg spdif_src = {
	.ns_reg = 0xcc,
	.md_reg = 0xd0,
	.mn = {
		.mnctr_en_bit = 8,
		.mnctr_reset_bit = 7,
		.mnctr_mode_shift = 5,
		.n_val_shift = 16,
		.m_val_shift = 16,
		.width = 8,
	},
	.p = {
		.pre_div_shift = 3,
		.pre_div_width = 2,
	},
	.s = {
		.src_sel_shift = 0,
		.parent_map = lcc_pxo_pll4_map,
	},
	.freq_tbl = clk_tbl_aif_osr,
	.clkr = {
		.enable_reg = 0xcc,
		.enable_mask = BIT(9),
		.hw.init = &(struct clk_init_data){
			.name = "spdif_src",
			.parent_names = lcc_pxo_pll4,
			.num_parents = 2,
			.ops = &clk_rcg_ops,
			.flags = CLK_SET_RATE_GATE,
		},
	},
};

static const char * const lcc_spdif_parents[] = {
	"spdif_src",
};

static struct clk_branch spdif_clk = {
	.halt_reg = 0xd4,
	.halt_bit = 1,
	.halt_check = BRANCH_HALT_ENABLE,
	.clkr = {
		.enable_reg = 0xcc,
		.enable_mask = BIT(12),
		.hw.init = &(struct clk_init_data){
			.name = "spdif_clk",
			.parent_names = lcc_spdif_parents,
			.num_parents = 1,
			.ops = &clk_branch_ops,
			.flags = CLK_SET_RATE_PARENT,
		},
	},
};

static struct freq_tbl clk_tbl_ahbix[] = {
	{ 131072000, P_PLL4, 1, 1, 3 },
	{ },
};

static struct clk_rcg ahbix_clk = {
	.ns_reg = 0x38,
	.md_reg = 0x3c,
	.mn = {
		.mnctr_en_bit = 8,
		.mnctr_reset_bit = 7,
		.mnctr_mode_shift = 5,
		.n_val_shift = 24,
		.m_val_shift = 8,
		.width = 8,
	},
	.p = {
		.pre_div_shift = 3,
		.pre_div_width = 2,
	},
	.s = {
		.src_sel_shift = 0,
		.parent_map = lcc_pxo_pll4_map,
	},
	.freq_tbl = clk_tbl_ahbix,
	.clkr = {
		.enable_reg = 0x38,
		.enable_mask = BIT(11),
		.hw.init = &(struct clk_init_data){
			.name = "ahbix",
			.parent_names = lcc_pxo_pll4,
			.num_parents = 2,
			.ops = &clk_rcg_lcc_ops,
		},
	},
};

static struct clk_regmap *lcc_ipq806x_clks[] = {
	[PLL4] = &pll4.clkr,
	[MI2S_OSR_SRC] = &mi2s_osr_src.clkr,
	[MI2S_OSR_CLK] = &mi2s_osr_clk.clkr,
	[MI2S_DIV_CLK] = &mi2s_div_clk.clkr,
	[MI2S_BIT_DIV_CLK] = &mi2s_bit_div_clk.clkr,
	[MI2S_BIT_CLK] = &mi2s_bit_clk.clkr,
	[PCM_SRC] = &pcm_src.clkr,
	[PCM_CLK_OUT] = &pcm_clk_out.clkr,
	[PCM_CLK] = &pcm_clk.clkr,
	[SPDIF_SRC] = &spdif_src.clkr,
	[SPDIF_CLK] = &spdif_clk.clkr,
	[AHBIX_CLK] = &ahbix_clk.clkr,
};

static const struct regmap_config lcc_ipq806x_regmap_config = {
	.reg_bits	= 32,
	.reg_stride	= 4,
	.val_bits	= 32,
	.max_register	= 0xfc,
	.fast_io	= true,
};

static const struct qcom_cc_desc lcc_ipq806x_desc = {
	.config = &lcc_ipq806x_regmap_config,
	.clks = lcc_ipq806x_clks,
	.num_clks = ARRAY_SIZE(lcc_ipq806x_clks),
};

static const struct of_device_id lcc_ipq806x_match_table[] = {
	{ .compatible = "qcom,lcc-ipq8064" },
	{ }
};
MODULE_DEVICE_TABLE(of, lcc_ipq806x_match_table);

static int lcc_ipq806x_probe(struct platform_device *pdev)
{
	u32 val;
	struct regmap *regmap;

	regmap = qcom_cc_map(pdev, &lcc_ipq806x_desc);
	if (IS_ERR(regmap))
		return PTR_ERR(regmap);

	/* Configure the rate of PLL4 if the bootloader hasn't already */
	val = regmap_read(regmap, 0x0, &val);
	if (!val)
		clk_pll_configure_sr(&pll4, regmap, &pll4_config, true);
	/* Enable PLL4 source on the LPASS Primary PLL Mux */
	regmap_write(regmap, 0xc4, 0x1);

	return qcom_cc_really_probe(pdev, &lcc_ipq806x_desc, regmap);
}

static int lcc_ipq806x_remove(struct platform_device *pdev)
{
	qcom_cc_remove(pdev);
	return 0;
}

static struct platform_driver lcc_ipq806x_driver = {
	.probe		= lcc_ipq806x_probe,
	.remove		= lcc_ipq806x_remove,
	.driver		= {
		.name	= "lcc-ipq806x",
		.of_match_table = lcc_ipq806x_match_table,
	},
};
module_platform_driver(lcc_ipq806x_driver);

MODULE_DESCRIPTION("QCOM LCC IPQ806x Driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:lcc-ipq806x");