1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (c) 2014, The Linux Foundation. All rights reserved.
4 */
5
6 #include <linux/kernel.h>
7 #include <linux/bitops.h>
8 #include <linux/err.h>
9 #include <linux/platform_device.h>
10 #include <linux/module.h>
11 #include <linux/of.h>
12 #include <linux/clk-provider.h>
13 #include <linux/regmap.h>
14
15 #include <dt-bindings/clock/qcom,lcc-ipq806x.h>
16
17 #include "common.h"
18 #include "clk-regmap.h"
19 #include "clk-pll.h"
20 #include "clk-rcg.h"
21 #include "clk-branch.h"
22 #include "clk-regmap-divider.h"
23 #include "clk-regmap-mux.h"
24 #include "reset.h"
25
26 static struct clk_pll pll4 = {
27 .l_reg = 0x4,
28 .m_reg = 0x8,
29 .n_reg = 0xc,
30 .config_reg = 0x14,
31 .mode_reg = 0x0,
32 .status_reg = 0x18,
33 .status_bit = 16,
34 .clkr.hw.init = &(struct clk_init_data){
35 .name = "pll4",
36 .parent_data = &(const struct clk_parent_data) {
37 .fw_name = "pxo", .name = "pxo_board",
38 },
39 .num_parents = 1,
40 .ops = &clk_pll_ops,
41 },
42 };
43
44 static const struct pll_config pll4_config = {
45 .l = 0xf,
46 .m = 0x91,
47 .n = 0xc7,
48 .vco_val = 0x0,
49 .vco_mask = BIT(17) | BIT(16),
50 .pre_div_val = 0x0,
51 .pre_div_mask = BIT(19),
52 .post_div_val = 0x0,
53 .post_div_mask = BIT(21) | BIT(20),
54 .mn_ena_mask = BIT(22),
55 .main_output_mask = BIT(23),
56 };
57
58 enum {
59 P_PXO,
60 P_PLL4,
61 };
62
63 static const struct parent_map lcc_pxo_pll4_map[] = {
64 { P_PXO, 0 },
65 { P_PLL4, 2 }
66 };
67
68 static const struct clk_parent_data lcc_pxo_pll4[] = {
69 { .fw_name = "pxo", .name = "pxo_board" },
70 { .fw_name = "pll4_vote", .name = "pll4_vote" },
71 };
72
73 static struct freq_tbl clk_tbl_aif_mi2s[] = {
74 { 1024000, P_PLL4, 4, 1, 96 },
75 { 1411200, P_PLL4, 4, 2, 139 },
76 { 1536000, P_PLL4, 4, 1, 64 },
77 { 2048000, P_PLL4, 4, 1, 48 },
78 { 2116800, P_PLL4, 4, 2, 93 },
79 { 2304000, P_PLL4, 4, 2, 85 },
80 { 2822400, P_PLL4, 4, 6, 209 },
81 { 3072000, P_PLL4, 4, 1, 32 },
82 { 3175200, P_PLL4, 4, 1, 31 },
83 { 4096000, P_PLL4, 4, 1, 24 },
84 { 4233600, P_PLL4, 4, 9, 209 },
85 { 4608000, P_PLL4, 4, 3, 64 },
86 { 5644800, P_PLL4, 4, 12, 209 },
87 { 6144000, P_PLL4, 4, 1, 16 },
88 { 6350400, P_PLL4, 4, 2, 31 },
89 { 8192000, P_PLL4, 4, 1, 12 },
90 { 8467200, P_PLL4, 4, 18, 209 },
91 { 9216000, P_PLL4, 4, 3, 32 },
92 { 11289600, P_PLL4, 4, 24, 209 },
93 { 12288000, P_PLL4, 4, 1, 8 },
94 { 12700800, P_PLL4, 4, 27, 209 },
95 { 13824000, P_PLL4, 4, 9, 64 },
96 { 16384000, P_PLL4, 4, 1, 6 },
97 { 16934400, P_PLL4, 4, 41, 238 },
98 { 18432000, P_PLL4, 4, 3, 16 },
99 { 22579200, P_PLL4, 2, 24, 209 },
100 { 24576000, P_PLL4, 4, 1, 4 },
101 { 27648000, P_PLL4, 4, 9, 32 },
102 { 33868800, P_PLL4, 4, 41, 119 },
103 { 36864000, P_PLL4, 4, 3, 8 },
104 { 45158400, P_PLL4, 1, 24, 209 },
105 { 49152000, P_PLL4, 4, 1, 2 },
106 { 50803200, P_PLL4, 1, 27, 209 },
107 { }
108 };
109
110 static struct clk_rcg mi2s_osr_src = {
111 .ns_reg = 0x48,
112 .md_reg = 0x4c,
113 .mn = {
114 .mnctr_en_bit = 8,
115 .mnctr_reset_bit = 7,
116 .mnctr_mode_shift = 5,
117 .n_val_shift = 24,
118 .m_val_shift = 8,
119 .width = 8,
120 },
121 .p = {
122 .pre_div_shift = 3,
123 .pre_div_width = 2,
124 },
125 .s = {
126 .src_sel_shift = 0,
127 .parent_map = lcc_pxo_pll4_map,
128 },
129 .freq_tbl = clk_tbl_aif_mi2s,
130 .clkr = {
131 .enable_reg = 0x48,
132 .enable_mask = BIT(9),
133 .hw.init = &(struct clk_init_data){
134 .name = "mi2s_osr_src",
135 .parent_data = lcc_pxo_pll4,
136 .num_parents = ARRAY_SIZE(lcc_pxo_pll4),
137 .ops = &clk_rcg_ops,
138 .flags = CLK_SET_RATE_GATE,
139 },
140 },
141 };
142
143 static struct clk_branch mi2s_osr_clk = {
144 .halt_reg = 0x50,
145 .halt_bit = 1,
146 .halt_check = BRANCH_HALT_ENABLE,
147 .clkr = {
148 .enable_reg = 0x48,
149 .enable_mask = BIT(17),
150 .hw.init = &(struct clk_init_data){
151 .name = "mi2s_osr_clk",
152 .parent_hws = (const struct clk_hw*[]) {
153 &mi2s_osr_src.clkr.hw,
154 },
155 .num_parents = 1,
156 .ops = &clk_branch_ops,
157 .flags = CLK_SET_RATE_PARENT,
158 },
159 },
160 };
161
162 static struct clk_regmap_div mi2s_div_clk = {
163 .reg = 0x48,
164 .shift = 10,
165 .width = 4,
166 .clkr = {
167 .hw.init = &(struct clk_init_data){
168 .name = "mi2s_div_clk",
169 .parent_hws = (const struct clk_hw*[]) {
170 &mi2s_osr_src.clkr.hw,
171 },
172 .num_parents = 1,
173 .ops = &clk_regmap_div_ops,
174 },
175 },
176 };
177
178 static struct clk_branch mi2s_bit_div_clk = {
179 .halt_reg = 0x50,
180 .halt_bit = 0,
181 .halt_check = BRANCH_HALT_ENABLE,
182 .clkr = {
183 .enable_reg = 0x48,
184 .enable_mask = BIT(15),
185 .hw.init = &(struct clk_init_data){
186 .name = "mi2s_bit_div_clk",
187 .parent_hws = (const struct clk_hw*[]) {
188 &mi2s_div_clk.clkr.hw,
189 },
190 .num_parents = 1,
191 .ops = &clk_branch_ops,
192 .flags = CLK_SET_RATE_PARENT,
193 },
194 },
195 };
196
197 static const struct clk_parent_data lcc_mi2s_bit_div_codec_clk[] = {
198 { .hw = &mi2s_bit_div_clk.clkr.hw, },
199 { .fw_name = "mi2s_codec", .name = "mi2s_codec_clk" },
200 };
201
202 static struct clk_regmap_mux mi2s_bit_clk = {
203 .reg = 0x48,
204 .shift = 14,
205 .width = 1,
206 .clkr = {
207 .hw.init = &(struct clk_init_data){
208 .name = "mi2s_bit_clk",
209 .parent_data = lcc_mi2s_bit_div_codec_clk,
210 .num_parents = ARRAY_SIZE(lcc_mi2s_bit_div_codec_clk),
211 .ops = &clk_regmap_mux_closest_ops,
212 .flags = CLK_SET_RATE_PARENT,
213 },
214 },
215 };
216
217 static struct freq_tbl clk_tbl_pcm[] = {
218 { 64000, P_PLL4, 4, 1, 1536 },
219 { 128000, P_PLL4, 4, 1, 768 },
220 { 256000, P_PLL4, 4, 1, 384 },
221 { 512000, P_PLL4, 4, 1, 192 },
222 { 1024000, P_PLL4, 4, 1, 96 },
223 { 2048000, P_PLL4, 4, 1, 48 },
224 { },
225 };
226
227 static struct clk_rcg pcm_src = {
228 .ns_reg = 0x54,
229 .md_reg = 0x58,
230 .mn = {
231 .mnctr_en_bit = 8,
232 .mnctr_reset_bit = 7,
233 .mnctr_mode_shift = 5,
234 .n_val_shift = 16,
235 .m_val_shift = 16,
236 .width = 16,
237 },
238 .p = {
239 .pre_div_shift = 3,
240 .pre_div_width = 2,
241 },
242 .s = {
243 .src_sel_shift = 0,
244 .parent_map = lcc_pxo_pll4_map,
245 },
246 .freq_tbl = clk_tbl_pcm,
247 .clkr = {
248 .enable_reg = 0x54,
249 .enable_mask = BIT(9),
250 .hw.init = &(struct clk_init_data){
251 .name = "pcm_src",
252 .parent_data = lcc_pxo_pll4,
253 .num_parents = ARRAY_SIZE(lcc_pxo_pll4),
254 .ops = &clk_rcg_ops,
255 .flags = CLK_SET_RATE_GATE,
256 },
257 },
258 };
259
260 static struct clk_branch pcm_clk_out = {
261 .halt_reg = 0x5c,
262 .halt_bit = 0,
263 .halt_check = BRANCH_HALT_ENABLE,
264 .clkr = {
265 .enable_reg = 0x54,
266 .enable_mask = BIT(11),
267 .hw.init = &(struct clk_init_data){
268 .name = "pcm_clk_out",
269 .parent_hws = (const struct clk_hw*[]) {
270 &pcm_src.clkr.hw,
271 },
272 .num_parents = 1,
273 .ops = &clk_branch_ops,
274 .flags = CLK_SET_RATE_PARENT,
275 },
276 },
277 };
278
279 static const struct clk_parent_data lcc_pcm_clk_out_codec_clk[] = {
280 { .hw = &pcm_clk_out.clkr.hw, },
281 { .fw_name = "pcm_codec_clk", .name = "pcm_codec_clk" },
282 };
283
284 static struct clk_regmap_mux pcm_clk = {
285 .reg = 0x54,
286 .shift = 10,
287 .width = 1,
288 .clkr = {
289 .hw.init = &(struct clk_init_data){
290 .name = "pcm_clk",
291 .parent_data = lcc_pcm_clk_out_codec_clk,
292 .num_parents = ARRAY_SIZE(lcc_pcm_clk_out_codec_clk),
293 .ops = &clk_regmap_mux_closest_ops,
294 .flags = CLK_SET_RATE_PARENT,
295 },
296 },
297 };
298
299 static struct freq_tbl clk_tbl_aif_osr[] = {
300 { 2822400, P_PLL4, 1, 147, 20480 },
301 { 4096000, P_PLL4, 1, 1, 96 },
302 { 5644800, P_PLL4, 1, 147, 10240 },
303 { 6144000, P_PLL4, 1, 1, 64 },
304 { 11289600, P_PLL4, 1, 147, 5120 },
305 { 12288000, P_PLL4, 1, 1, 32 },
306 { 22579200, P_PLL4, 1, 147, 2560 },
307 { 24576000, P_PLL4, 1, 1, 16 },
308 { },
309 };
310
311 static struct clk_rcg spdif_src = {
312 .ns_reg = 0xcc,
313 .md_reg = 0xd0,
314 .mn = {
315 .mnctr_en_bit = 8,
316 .mnctr_reset_bit = 7,
317 .mnctr_mode_shift = 5,
318 .n_val_shift = 16,
319 .m_val_shift = 16,
320 .width = 8,
321 },
322 .p = {
323 .pre_div_shift = 3,
324 .pre_div_width = 2,
325 },
326 .s = {
327 .src_sel_shift = 0,
328 .parent_map = lcc_pxo_pll4_map,
329 },
330 .freq_tbl = clk_tbl_aif_osr,
331 .clkr = {
332 .enable_reg = 0xcc,
333 .enable_mask = BIT(9),
334 .hw.init = &(struct clk_init_data){
335 .name = "spdif_src",
336 .parent_data = lcc_pxo_pll4,
337 .num_parents = ARRAY_SIZE(lcc_pxo_pll4),
338 .ops = &clk_rcg_ops,
339 .flags = CLK_SET_RATE_GATE,
340 },
341 },
342 };
343
344 static struct clk_branch spdif_clk = {
345 .halt_reg = 0xd4,
346 .halt_bit = 1,
347 .halt_check = BRANCH_HALT_ENABLE,
348 .clkr = {
349 .enable_reg = 0xcc,
350 .enable_mask = BIT(12),
351 .hw.init = &(struct clk_init_data){
352 .name = "spdif_clk",
353 .parent_hws = (const struct clk_hw*[]) {
354 &spdif_src.clkr.hw,
355 },
356 .num_parents = 1,
357 .ops = &clk_branch_ops,
358 .flags = CLK_SET_RATE_PARENT,
359 },
360 },
361 };
362
363 static struct freq_tbl clk_tbl_ahbix[] = {
364 { 131072000, P_PLL4, 1, 1, 3 },
365 { },
366 };
367
368 static struct clk_rcg ahbix_clk = {
369 .ns_reg = 0x38,
370 .md_reg = 0x3c,
371 .mn = {
372 .mnctr_en_bit = 8,
373 .mnctr_reset_bit = 7,
374 .mnctr_mode_shift = 5,
375 .n_val_shift = 24,
376 .m_val_shift = 8,
377 .width = 8,
378 },
379 .p = {
380 .pre_div_shift = 3,
381 .pre_div_width = 2,
382 },
383 .s = {
384 .src_sel_shift = 0,
385 .parent_map = lcc_pxo_pll4_map,
386 },
387 .freq_tbl = clk_tbl_ahbix,
388 .clkr = {
389 .enable_reg = 0x38,
390 .enable_mask = BIT(11),
391 .hw.init = &(struct clk_init_data){
392 .name = "ahbix",
393 .parent_data = lcc_pxo_pll4,
394 .num_parents = ARRAY_SIZE(lcc_pxo_pll4),
395 .ops = &clk_rcg_lcc_ops,
396 },
397 },
398 };
399
400 static struct clk_regmap *lcc_ipq806x_clks[] = {
401 [PLL4] = &pll4.clkr,
402 [MI2S_OSR_SRC] = &mi2s_osr_src.clkr,
403 [MI2S_OSR_CLK] = &mi2s_osr_clk.clkr,
404 [MI2S_DIV_CLK] = &mi2s_div_clk.clkr,
405 [MI2S_BIT_DIV_CLK] = &mi2s_bit_div_clk.clkr,
406 [MI2S_BIT_CLK] = &mi2s_bit_clk.clkr,
407 [PCM_SRC] = &pcm_src.clkr,
408 [PCM_CLK_OUT] = &pcm_clk_out.clkr,
409 [PCM_CLK] = &pcm_clk.clkr,
410 [SPDIF_SRC] = &spdif_src.clkr,
411 [SPDIF_CLK] = &spdif_clk.clkr,
412 [AHBIX_CLK] = &ahbix_clk.clkr,
413 };
414
415 static const struct qcom_reset_map lcc_ipq806x_resets[] = {
416 [LCC_PCM_RESET] = { 0x54, 13 },
417 };
418
419 static const struct regmap_config lcc_ipq806x_regmap_config = {
420 .reg_bits = 32,
421 .reg_stride = 4,
422 .val_bits = 32,
423 .max_register = 0xfc,
424 .fast_io = true,
425 };
426
427 static const struct qcom_cc_desc lcc_ipq806x_desc = {
428 .config = &lcc_ipq806x_regmap_config,
429 .clks = lcc_ipq806x_clks,
430 .num_clks = ARRAY_SIZE(lcc_ipq806x_clks),
431 .resets = lcc_ipq806x_resets,
432 .num_resets = ARRAY_SIZE(lcc_ipq806x_resets),
433 };
434
435 static const struct of_device_id lcc_ipq806x_match_table[] = {
436 { .compatible = "qcom,lcc-ipq8064" },
437 { }
438 };
439 MODULE_DEVICE_TABLE(of, lcc_ipq806x_match_table);
440
lcc_ipq806x_probe(struct platform_device * pdev)441 static int lcc_ipq806x_probe(struct platform_device *pdev)
442 {
443 u32 val;
444 struct regmap *regmap;
445
446 regmap = qcom_cc_map(pdev, &lcc_ipq806x_desc);
447 if (IS_ERR(regmap))
448 return PTR_ERR(regmap);
449
450 /* Configure the rate of PLL4 if the bootloader hasn't already */
451 regmap_read(regmap, 0x0, &val);
452 if (!val)
453 clk_pll_configure_sr(&pll4, regmap, &pll4_config, true);
454 /* Enable PLL4 source on the LPASS Primary PLL Mux */
455 regmap_write(regmap, 0xc4, 0x1);
456
457 return qcom_cc_really_probe(pdev, &lcc_ipq806x_desc, regmap);
458 }
459
460 static struct platform_driver lcc_ipq806x_driver = {
461 .probe = lcc_ipq806x_probe,
462 .driver = {
463 .name = "lcc-ipq806x",
464 .of_match_table = lcc_ipq806x_match_table,
465 },
466 };
467 module_platform_driver(lcc_ipq806x_driver);
468
469 MODULE_DESCRIPTION("QCOM LCC IPQ806x Driver");
470 MODULE_LICENSE("GPL v2");
471 MODULE_ALIAS("platform:lcc-ipq806x");
472