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[deliverable/linux.git] / drivers / clk / rockchip / clk.h
1 /*
2 * Copyright (c) 2014 MundoReader S.L.
3 * Author: Heiko Stuebner <heiko@sntech.de>
4 *
5 * Copyright (c) 2015 Rockchip Electronics Co. Ltd.
6 * Author: Xing Zheng <zhengxing@rock-chips.com>
7 *
8 * based on
9 *
10 * samsung/clk.h
11 * Copyright (c) 2013 Samsung Electronics Co., Ltd.
12 * Copyright (c) 2013 Linaro Ltd.
13 * Author: Thomas Abraham <thomas.ab@samsung.com>
14 *
15 * This program is free software; you can redistribute it and/or modify
16 * it under the terms of the GNU General Public License as published by
17 * the Free Software Foundation; either version 2 of the License, or
18 * (at your option) any later version.
19 *
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
24 */
25
26 #ifndef CLK_ROCKCHIP_CLK_H
27 #define CLK_ROCKCHIP_CLK_H
28
29 #include <linux/io.h>
30 #include <linux/clk-provider.h>
31
32 struct clk;
33
34 #define HIWORD_UPDATE(val, mask, shift) \
35 ((val) << (shift) | (mask) << ((shift) + 16))
36
37 #define RK2928_PLL_CON(x) ((x) * 0x4)
38 #define RK2928_MODE_CON 0x40
39 #define RK2928_CLKSEL_CON(x) ((x) * 0x4 + 0x44)
40 #define RK2928_CLKGATE_CON(x) ((x) * 0x4 + 0xd0)
41 #define RK2928_GLB_SRST_FST 0x100
42 #define RK2928_GLB_SRST_SND 0x104
43 #define RK2928_SOFTRST_CON(x) ((x) * 0x4 + 0x110)
44 #define RK2928_MISC_CON 0x134
45
46 #define RK3036_SDMMC_CON0 0x144
47 #define RK3036_SDMMC_CON1 0x148
48 #define RK3036_SDIO_CON0 0x14c
49 #define RK3036_SDIO_CON1 0x150
50 #define RK3036_EMMC_CON0 0x154
51 #define RK3036_EMMC_CON1 0x158
52
53 #define RK3228_GLB_SRST_FST 0x1f0
54 #define RK3228_GLB_SRST_SND 0x1f4
55 #define RK3228_SDMMC_CON0 0x1c0
56 #define RK3228_SDMMC_CON1 0x1c4
57 #define RK3228_SDIO_CON0 0x1c8
58 #define RK3228_SDIO_CON1 0x1cc
59 #define RK3228_EMMC_CON0 0x1d8
60 #define RK3228_EMMC_CON1 0x1dc
61
62 #define RK3288_PLL_CON(x) RK2928_PLL_CON(x)
63 #define RK3288_MODE_CON 0x50
64 #define RK3288_CLKSEL_CON(x) ((x) * 0x4 + 0x60)
65 #define RK3288_CLKGATE_CON(x) ((x) * 0x4 + 0x160)
66 #define RK3288_GLB_SRST_FST 0x1b0
67 #define RK3288_GLB_SRST_SND 0x1b4
68 #define RK3288_SOFTRST_CON(x) ((x) * 0x4 + 0x1b8)
69 #define RK3288_MISC_CON 0x1e8
70 #define RK3288_SDMMC_CON0 0x200
71 #define RK3288_SDMMC_CON1 0x204
72 #define RK3288_SDIO0_CON0 0x208
73 #define RK3288_SDIO0_CON1 0x20c
74 #define RK3288_SDIO1_CON0 0x210
75 #define RK3288_SDIO1_CON1 0x214
76 #define RK3288_EMMC_CON0 0x218
77 #define RK3288_EMMC_CON1 0x21c
78
79 #define RK3368_PLL_CON(x) RK2928_PLL_CON(x)
80 #define RK3368_CLKSEL_CON(x) ((x) * 0x4 + 0x100)
81 #define RK3368_CLKGATE_CON(x) ((x) * 0x4 + 0x200)
82 #define RK3368_GLB_SRST_FST 0x280
83 #define RK3368_GLB_SRST_SND 0x284
84 #define RK3368_SOFTRST_CON(x) ((x) * 0x4 + 0x300)
85 #define RK3368_MISC_CON 0x380
86 #define RK3368_SDMMC_CON0 0x400
87 #define RK3368_SDMMC_CON1 0x404
88 #define RK3368_SDIO0_CON0 0x408
89 #define RK3368_SDIO0_CON1 0x40c
90 #define RK3368_SDIO1_CON0 0x410
91 #define RK3368_SDIO1_CON1 0x414
92 #define RK3368_EMMC_CON0 0x418
93 #define RK3368_EMMC_CON1 0x41c
94
95 #define RK3399_PLL_CON(x) RK2928_PLL_CON(x)
96 #define RK3399_CLKSEL_CON(x) ((x) * 0x4 + 0x100)
97 #define RK3399_CLKGATE_CON(x) ((x) * 0x4 + 0x300)
98 #define RK3399_SOFTRST_CON(x) ((x) * 0x4 + 0x400)
99 #define RK3399_GLB_SRST_FST 0x500
100 #define RK3399_GLB_SRST_SND 0x504
101 #define RK3399_GLB_CNT_TH 0x508
102 #define RK3399_MISC_CON 0x50c
103 #define RK3399_RST_CON 0x510
104 #define RK3399_RST_ST 0x514
105 #define RK3399_SDMMC_CON0 0x580
106 #define RK3399_SDMMC_CON1 0x584
107 #define RK3399_SDIO_CON0 0x588
108 #define RK3399_SDIO_CON1 0x58c
109
110 #define RK3399_PMU_PLL_CON(x) RK2928_PLL_CON(x)
111 #define RK3399_PMU_CLKSEL_CON(x) ((x) * 0x4 + 0x80)
112 #define RK3399_PMU_CLKGATE_CON(x) ((x) * 0x4 + 0x100)
113 #define RK3399_PMU_SOFTRST_CON(x) ((x) * 0x4 + 0x110)
114
115 enum rockchip_pll_type {
116 pll_rk3036,
117 pll_rk3066,
118 pll_rk3399,
119 };
120
121 #define RK3036_PLL_RATE(_rate, _refdiv, _fbdiv, _postdiv1, \
122 _postdiv2, _dsmpd, _frac) \
123 { \
124 .rate = _rate##U, \
125 .fbdiv = _fbdiv, \
126 .postdiv1 = _postdiv1, \
127 .refdiv = _refdiv, \
128 .postdiv2 = _postdiv2, \
129 .dsmpd = _dsmpd, \
130 .frac = _frac, \
131 }
132
133 #define RK3066_PLL_RATE(_rate, _nr, _nf, _no) \
134 { \
135 .rate = _rate##U, \
136 .nr = _nr, \
137 .nf = _nf, \
138 .no = _no, \
139 .nb = ((_nf) < 2) ? 1 : (_nf) >> 1, \
140 }
141
142 #define RK3066_PLL_RATE_NB(_rate, _nr, _nf, _no, _nb) \
143 { \
144 .rate = _rate##U, \
145 .nr = _nr, \
146 .nf = _nf, \
147 .no = _no, \
148 .nb = _nb, \
149 }
150
151 /**
152 * struct rockchip_clk_provider - information about clock provider
153 * @reg_base: virtual address for the register base.
154 * @clk_data: holds clock related data like clk* and number of clocks.
155 * @cru_node: device-node of the clock-provider
156 * @grf: regmap of the general-register-files syscon
157 * @lock: maintains exclusion between callbacks for a given clock-provider.
158 */
159 struct rockchip_clk_provider {
160 void __iomem *reg_base;
161 struct clk_onecell_data clk_data;
162 struct device_node *cru_node;
163 struct regmap *grf;
164 spinlock_t lock;
165 };
166
167 struct rockchip_pll_rate_table {
168 unsigned long rate;
169 unsigned int nr;
170 unsigned int nf;
171 unsigned int no;
172 unsigned int nb;
173 /* for RK3036/RK3399 */
174 unsigned int fbdiv;
175 unsigned int postdiv1;
176 unsigned int refdiv;
177 unsigned int postdiv2;
178 unsigned int dsmpd;
179 unsigned int frac;
180 };
181
182 /**
183 * struct rockchip_pll_clock - information about pll clock
184 * @id: platform specific id of the clock.
185 * @name: name of this pll clock.
186 * @parent_names: name of the parent clock.
187 * @num_parents: number of parents
188 * @flags: optional flags for basic clock.
189 * @con_offset: offset of the register for configuring the PLL.
190 * @mode_offset: offset of the register for configuring the PLL-mode.
191 * @mode_shift: offset inside the mode-register for the mode of this pll.
192 * @lock_shift: offset inside the lock register for the lock status.
193 * @type: Type of PLL to be registered.
194 * @pll_flags: hardware-specific flags
195 * @rate_table: Table of usable pll rates
196 *
197 * Flags:
198 * ROCKCHIP_PLL_SYNC_RATE - check rate parameters to match against the
199 * rate_table parameters and ajust them if necessary.
200 */
201 struct rockchip_pll_clock {
202 unsigned int id;
203 const char *name;
204 const char *const *parent_names;
205 u8 num_parents;
206 unsigned long flags;
207 int con_offset;
208 int mode_offset;
209 int mode_shift;
210 int lock_shift;
211 enum rockchip_pll_type type;
212 u8 pll_flags;
213 struct rockchip_pll_rate_table *rate_table;
214 };
215
216 #define ROCKCHIP_PLL_SYNC_RATE BIT(0)
217
218 #define PLL(_type, _id, _name, _pnames, _flags, _con, _mode, _mshift, \
219 _lshift, _pflags, _rtable) \
220 { \
221 .id = _id, \
222 .type = _type, \
223 .name = _name, \
224 .parent_names = _pnames, \
225 .num_parents = ARRAY_SIZE(_pnames), \
226 .flags = CLK_GET_RATE_NOCACHE | _flags, \
227 .con_offset = _con, \
228 .mode_offset = _mode, \
229 .mode_shift = _mshift, \
230 .lock_shift = _lshift, \
231 .pll_flags = _pflags, \
232 .rate_table = _rtable, \
233 }
234
235 struct clk *rockchip_clk_register_pll(struct rockchip_clk_provider *ctx,
236 enum rockchip_pll_type pll_type,
237 const char *name, const char *const *parent_names,
238 u8 num_parents, int con_offset, int grf_lock_offset,
239 int lock_shift, int mode_offset, int mode_shift,
240 struct rockchip_pll_rate_table *rate_table,
241 u8 clk_pll_flags);
242
243 struct rockchip_cpuclk_clksel {
244 int reg;
245 u32 val;
246 };
247
248 #define ROCKCHIP_CPUCLK_NUM_DIVIDERS 2
249 struct rockchip_cpuclk_rate_table {
250 unsigned long prate;
251 struct rockchip_cpuclk_clksel divs[ROCKCHIP_CPUCLK_NUM_DIVIDERS];
252 };
253
254 /**
255 * struct rockchip_cpuclk_reg_data - register offsets and masks of the cpuclock
256 * @core_reg: register offset of the core settings register
257 * @div_core_shift: core divider offset used to divide the pll value
258 * @div_core_mask: core divider mask
259 * @mux_core_alt: mux value to select alternate parent
260 * @mux_core_main: mux value to select main parent of core
261 * @mux_core_shift: offset of the core multiplexer
262 * @mux_core_mask: core multiplexer mask
263 */
264 struct rockchip_cpuclk_reg_data {
265 int core_reg;
266 u8 div_core_shift;
267 u32 div_core_mask;
268 u8 mux_core_alt;
269 u8 mux_core_main;
270 u8 mux_core_shift;
271 u32 mux_core_mask;
272 };
273
274 struct clk *rockchip_clk_register_cpuclk(const char *name,
275 const char *const *parent_names, u8 num_parents,
276 const struct rockchip_cpuclk_reg_data *reg_data,
277 const struct rockchip_cpuclk_rate_table *rates,
278 int nrates, void __iomem *reg_base, spinlock_t *lock);
279
280 struct clk *rockchip_clk_register_mmc(const char *name,
281 const char *const *parent_names, u8 num_parents,
282 void __iomem *reg, int shift);
283
284 #define ROCKCHIP_INVERTER_HIWORD_MASK BIT(0)
285
286 struct clk *rockchip_clk_register_inverter(const char *name,
287 const char *const *parent_names, u8 num_parents,
288 void __iomem *reg, int shift, int flags,
289 spinlock_t *lock);
290
291 #define PNAME(x) static const char *const x[] __initconst
292
293 enum rockchip_clk_branch_type {
294 branch_composite,
295 branch_mux,
296 branch_divider,
297 branch_fraction_divider,
298 branch_gate,
299 branch_mmc,
300 branch_inverter,
301 branch_factor,
302 };
303
304 struct rockchip_clk_branch {
305 unsigned int id;
306 enum rockchip_clk_branch_type branch_type;
307 const char *name;
308 const char *const *parent_names;
309 u8 num_parents;
310 unsigned long flags;
311 int muxdiv_offset;
312 u8 mux_shift;
313 u8 mux_width;
314 u8 mux_flags;
315 u8 div_shift;
316 u8 div_width;
317 u8 div_flags;
318 struct clk_div_table *div_table;
319 int gate_offset;
320 u8 gate_shift;
321 u8 gate_flags;
322 struct rockchip_clk_branch *child;
323 };
324
325 #define COMPOSITE(_id, cname, pnames, f, mo, ms, mw, mf, ds, dw,\
326 df, go, gs, gf) \
327 { \
328 .id = _id, \
329 .branch_type = branch_composite, \
330 .name = cname, \
331 .parent_names = pnames, \
332 .num_parents = ARRAY_SIZE(pnames), \
333 .flags = f, \
334 .muxdiv_offset = mo, \
335 .mux_shift = ms, \
336 .mux_width = mw, \
337 .mux_flags = mf, \
338 .div_shift = ds, \
339 .div_width = dw, \
340 .div_flags = df, \
341 .gate_offset = go, \
342 .gate_shift = gs, \
343 .gate_flags = gf, \
344 }
345
346 #define COMPOSITE_NOMUX(_id, cname, pname, f, mo, ds, dw, df, \
347 go, gs, gf) \
348 { \
349 .id = _id, \
350 .branch_type = branch_composite, \
351 .name = cname, \
352 .parent_names = (const char *[]){ pname }, \
353 .num_parents = 1, \
354 .flags = f, \
355 .muxdiv_offset = mo, \
356 .div_shift = ds, \
357 .div_width = dw, \
358 .div_flags = df, \
359 .gate_offset = go, \
360 .gate_shift = gs, \
361 .gate_flags = gf, \
362 }
363
364 #define COMPOSITE_NOMUX_DIVTBL(_id, cname, pname, f, mo, ds, dw,\
365 df, dt, go, gs, gf) \
366 { \
367 .id = _id, \
368 .branch_type = branch_composite, \
369 .name = cname, \
370 .parent_names = (const char *[]){ pname }, \
371 .num_parents = 1, \
372 .flags = f, \
373 .muxdiv_offset = mo, \
374 .div_shift = ds, \
375 .div_width = dw, \
376 .div_flags = df, \
377 .div_table = dt, \
378 .gate_offset = go, \
379 .gate_shift = gs, \
380 .gate_flags = gf, \
381 }
382
383 #define COMPOSITE_NODIV(_id, cname, pnames, f, mo, ms, mw, mf, \
384 go, gs, gf) \
385 { \
386 .id = _id, \
387 .branch_type = branch_composite, \
388 .name = cname, \
389 .parent_names = pnames, \
390 .num_parents = ARRAY_SIZE(pnames), \
391 .flags = f, \
392 .muxdiv_offset = mo, \
393 .mux_shift = ms, \
394 .mux_width = mw, \
395 .mux_flags = mf, \
396 .gate_offset = go, \
397 .gate_shift = gs, \
398 .gate_flags = gf, \
399 }
400
401 #define COMPOSITE_NOGATE(_id, cname, pnames, f, mo, ms, mw, mf, \
402 ds, dw, df) \
403 { \
404 .id = _id, \
405 .branch_type = branch_composite, \
406 .name = cname, \
407 .parent_names = pnames, \
408 .num_parents = ARRAY_SIZE(pnames), \
409 .flags = f, \
410 .muxdiv_offset = mo, \
411 .mux_shift = ms, \
412 .mux_width = mw, \
413 .mux_flags = mf, \
414 .div_shift = ds, \
415 .div_width = dw, \
416 .div_flags = df, \
417 .gate_offset = -1, \
418 }
419
420 #define COMPOSITE_NOGATE_DIVTBL(_id, cname, pnames, f, mo, ms, \
421 mw, mf, ds, dw, df, dt) \
422 { \
423 .id = _id, \
424 .branch_type = branch_composite, \
425 .name = cname, \
426 .parent_names = pnames, \
427 .num_parents = ARRAY_SIZE(pnames), \
428 .flags = f, \
429 .muxdiv_offset = mo, \
430 .mux_shift = ms, \
431 .mux_width = mw, \
432 .mux_flags = mf, \
433 .div_shift = ds, \
434 .div_width = dw, \
435 .div_flags = df, \
436 .div_table = dt, \
437 .gate_offset = -1, \
438 }
439
440 #define COMPOSITE_FRAC(_id, cname, pname, f, mo, df, go, gs, gf)\
441 { \
442 .id = _id, \
443 .branch_type = branch_fraction_divider, \
444 .name = cname, \
445 .parent_names = (const char *[]){ pname }, \
446 .num_parents = 1, \
447 .flags = f, \
448 .muxdiv_offset = mo, \
449 .div_shift = 16, \
450 .div_width = 16, \
451 .div_flags = df, \
452 .gate_offset = go, \
453 .gate_shift = gs, \
454 .gate_flags = gf, \
455 }
456
457 #define COMPOSITE_FRACMUX(_id, cname, pname, f, mo, df, go, gs, gf, ch) \
458 { \
459 .id = _id, \
460 .branch_type = branch_fraction_divider, \
461 .name = cname, \
462 .parent_names = (const char *[]){ pname }, \
463 .num_parents = 1, \
464 .flags = f, \
465 .muxdiv_offset = mo, \
466 .div_shift = 16, \
467 .div_width = 16, \
468 .div_flags = df, \
469 .gate_offset = go, \
470 .gate_shift = gs, \
471 .gate_flags = gf, \
472 .child = ch, \
473 }
474
475 #define COMPOSITE_FRACMUX_NOGATE(_id, cname, pname, f, mo, df, ch) \
476 { \
477 .id = _id, \
478 .branch_type = branch_fraction_divider, \
479 .name = cname, \
480 .parent_names = (const char *[]){ pname }, \
481 .num_parents = 1, \
482 .flags = f, \
483 .muxdiv_offset = mo, \
484 .div_shift = 16, \
485 .div_width = 16, \
486 .div_flags = df, \
487 .gate_offset = -1, \
488 .child = ch, \
489 }
490
491 #define MUX(_id, cname, pnames, f, o, s, w, mf) \
492 { \
493 .id = _id, \
494 .branch_type = branch_mux, \
495 .name = cname, \
496 .parent_names = pnames, \
497 .num_parents = ARRAY_SIZE(pnames), \
498 .flags = f, \
499 .muxdiv_offset = o, \
500 .mux_shift = s, \
501 .mux_width = w, \
502 .mux_flags = mf, \
503 .gate_offset = -1, \
504 }
505
506 #define DIV(_id, cname, pname, f, o, s, w, df) \
507 { \
508 .id = _id, \
509 .branch_type = branch_divider, \
510 .name = cname, \
511 .parent_names = (const char *[]){ pname }, \
512 .num_parents = 1, \
513 .flags = f, \
514 .muxdiv_offset = o, \
515 .div_shift = s, \
516 .div_width = w, \
517 .div_flags = df, \
518 .gate_offset = -1, \
519 }
520
521 #define DIVTBL(_id, cname, pname, f, o, s, w, df, dt) \
522 { \
523 .id = _id, \
524 .branch_type = branch_divider, \
525 .name = cname, \
526 .parent_names = (const char *[]){ pname }, \
527 .num_parents = 1, \
528 .flags = f, \
529 .muxdiv_offset = o, \
530 .div_shift = s, \
531 .div_width = w, \
532 .div_flags = df, \
533 .div_table = dt, \
534 }
535
536 #define GATE(_id, cname, pname, f, o, b, gf) \
537 { \
538 .id = _id, \
539 .branch_type = branch_gate, \
540 .name = cname, \
541 .parent_names = (const char *[]){ pname }, \
542 .num_parents = 1, \
543 .flags = f, \
544 .gate_offset = o, \
545 .gate_shift = b, \
546 .gate_flags = gf, \
547 }
548
549 #define MMC(_id, cname, pname, offset, shift) \
550 { \
551 .id = _id, \
552 .branch_type = branch_mmc, \
553 .name = cname, \
554 .parent_names = (const char *[]){ pname }, \
555 .num_parents = 1, \
556 .muxdiv_offset = offset, \
557 .div_shift = shift, \
558 }
559
560 #define INVERTER(_id, cname, pname, io, is, if) \
561 { \
562 .id = _id, \
563 .branch_type = branch_inverter, \
564 .name = cname, \
565 .parent_names = (const char *[]){ pname }, \
566 .num_parents = 1, \
567 .muxdiv_offset = io, \
568 .div_shift = is, \
569 .div_flags = if, \
570 }
571
572 #define FACTOR(_id, cname, pname, f, fm, fd) \
573 { \
574 .id = _id, \
575 .branch_type = branch_factor, \
576 .name = cname, \
577 .parent_names = (const char *[]){ pname }, \
578 .num_parents = 1, \
579 .flags = f, \
580 .div_shift = fm, \
581 .div_width = fd, \
582 }
583
584 #define FACTOR_GATE(_id, cname, pname, f, fm, fd, go, gb, gf) \
585 { \
586 .id = _id, \
587 .branch_type = branch_factor, \
588 .name = cname, \
589 .parent_names = (const char *[]){ pname }, \
590 .num_parents = 1, \
591 .flags = f, \
592 .div_shift = fm, \
593 .div_width = fd, \
594 .gate_offset = go, \
595 .gate_shift = gb, \
596 .gate_flags = gf, \
597 }
598
599 struct rockchip_clk_provider *rockchip_clk_init(struct device_node *np,
600 void __iomem *base, unsigned long nr_clks);
601 void rockchip_clk_of_add_provider(struct device_node *np,
602 struct rockchip_clk_provider *ctx);
603 void rockchip_clk_add_lookup(struct rockchip_clk_provider *ctx,
604 struct clk *clk, unsigned int id);
605 void rockchip_clk_register_branches(struct rockchip_clk_provider *ctx,
606 struct rockchip_clk_branch *list,
607 unsigned int nr_clk);
608 void rockchip_clk_register_plls(struct rockchip_clk_provider *ctx,
609 struct rockchip_pll_clock *pll_list,
610 unsigned int nr_pll, int grf_lock_offset);
611 void rockchip_clk_register_armclk(struct rockchip_clk_provider *ctx,
612 unsigned int lookup_id, const char *name,
613 const char *const *parent_names, u8 num_parents,
614 const struct rockchip_cpuclk_reg_data *reg_data,
615 const struct rockchip_cpuclk_rate_table *rates,
616 int nrates);
617 void rockchip_clk_protect_critical(const char *const clocks[], int nclocks);
618 void rockchip_register_restart_notifier(struct rockchip_clk_provider *ctx,
619 unsigned int reg, void (*cb)(void));
620
621 #define ROCKCHIP_SOFTRST_HIWORD_MASK BIT(0)
622
623 #ifdef CONFIG_RESET_CONTROLLER
624 void rockchip_register_softrst(struct device_node *np,
625 unsigned int num_regs,
626 void __iomem *base, u8 flags);
627 #else
628 static inline void rockchip_register_softrst(struct device_node *np,
629 unsigned int num_regs,
630 void __iomem *base, u8 flags)
631 {
632 }
633 #endif
634
635 #endif
Linux kernel - Deliverables
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