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Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs
[linux/fpc-iii.git] / arch / arm / mach-s5p6440 / clock.c
blobca6e48dce77793b0a846a26ca5dd9a5429524c74
1 /* linux/arch/arm/mach-s5p6440/clock.c
2 *
3 * Copyright (c) 2009 Samsung Electronics Co., Ltd.
4 * http://www.samsung.com/
5 *
6 * S5P6440 - Clock support
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 */
12
13 #include <linux/init.h>
14 #include <linux/module.h>
15 #include <linux/kernel.h>
16 #include <linux/list.h>
17 #include <linux/errno.h>
18 #include <linux/err.h>
19 #include <linux/clk.h>
20 #include <linux/sysdev.h>
21 #include <linux/io.h>
22
23 #include <mach/hardware.h>
24 #include <mach/map.h>
25
26 #include <plat/cpu-freq.h>
27 #include <mach/regs-clock.h>
28 #include <plat/clock.h>
29 #include <plat/cpu.h>
30 #include <plat/clock-clksrc.h>
31 #include <plat/s5p-clock.h>
32 #include <plat/pll.h>
33 #include <plat/s5p6440.h>
34
35 /* APLL Mux output clock */
36 static struct clksrc_clk clk_mout_apll = {
37 .clk = {
38 .name = "mout_apll",
39 .id = -1,
40 },
41 .sources = &clk_src_apll,
42 .reg_src = { .reg = S5P_CLK_SRC0, .shift = 0, .size = 1 },
43 };
44
45 static int s5p6440_epll_enable(struct clk *clk, int enable)
46 {
47 unsigned int ctrlbit = clk->ctrlbit;
48 unsigned int epll_con = __raw_readl(S5P_EPLL_CON) & ~ctrlbit;
49
50 if (enable)
51 __raw_writel(epll_con | ctrlbit, S5P_EPLL_CON);
52 else
53 __raw_writel(epll_con, S5P_EPLL_CON);
54
55 return 0;
56 }
57
58 static unsigned long s5p6440_epll_get_rate(struct clk *clk)
59 {
60 return clk->rate;
61 }
62
63 static u32 epll_div[][5] = {
64 { 36000000, 0, 48, 1, 4 },
65 { 48000000, 0, 32, 1, 3 },
66 { 60000000, 0, 40, 1, 3 },
67 { 72000000, 0, 48, 1, 3 },
68 { 84000000, 0, 28, 1, 2 },
69 { 96000000, 0, 32, 1, 2 },
70 { 32768000, 45264, 43, 1, 4 },
71 { 45158000, 6903, 30, 1, 3 },
72 { 49152000, 50332, 32, 1, 3 },
73 { 67738000, 10398, 45, 1, 3 },
74 { 73728000, 9961, 49, 1, 3 }
75 };
76
77 static int s5p6440_epll_set_rate(struct clk *clk, unsigned long rate)
78 {
79 unsigned int epll_con, epll_con_k;
80 unsigned int i;
81
82 if (clk->rate == rate) /* Return if nothing changed */
83 return 0;
84
85 epll_con = __raw_readl(S5P_EPLL_CON);
86 epll_con_k = __raw_readl(S5P_EPLL_CON_K);
87
88 epll_con_k &= ~(PLL90XX_KDIV_MASK);
89 epll_con &= ~(PLL90XX_MDIV_MASK | PLL90XX_PDIV_MASK | PLL90XX_SDIV_MASK);
90
91 for (i = 0; i < ARRAY_SIZE(epll_div); i++) {
92 if (epll_div[i][0] == rate) {
93 epll_con_k |= (epll_div[i][1] << PLL90XX_KDIV_SHIFT);
94 epll_con |= (epll_div[i][2] << PLL90XX_MDIV_SHIFT) |
95 (epll_div[i][3] << PLL90XX_PDIV_SHIFT) |
96 (epll_div[i][4] << PLL90XX_SDIV_SHIFT);
97 break;
98 }
99 }
100
101 if (i == ARRAY_SIZE(epll_div)) {
102 printk(KERN_ERR "%s: Invalid Clock EPLL Frequency\n", __func__);
103 return -EINVAL;
104 }
105
106 __raw_writel(epll_con, S5P_EPLL_CON);
107 __raw_writel(epll_con_k, S5P_EPLL_CON_K);
108
109 clk->rate = rate;
110
111 return 0;
112 }
113
114 static struct clk_ops s5p6440_epll_ops = {
115 .get_rate = s5p6440_epll_get_rate,
116 .set_rate = s5p6440_epll_set_rate,
117 };
118
119 static struct clksrc_clk clk_mout_epll = {
120 .clk = {
121 .name = "mout_epll",
122 .id = -1,
123 },
124 .sources = &clk_src_epll,
125 .reg_src = { .reg = S5P_CLK_SRC0, .shift = 2, .size = 1 },
126 };
127
128 static struct clksrc_clk clk_mout_mpll = {
129 .clk = {
130 .name = "mout_mpll",
131 .id = -1,
132 },
133 .sources = &clk_src_mpll,
134 .reg_src = { .reg = S5P_CLK_SRC0, .shift = 1, .size = 1 },
135 };
136
137 enum perf_level {
138 L0 = 532*1000,
139 L1 = 266*1000,
140 L2 = 133*1000,
141 };
142
143 static const u32 clock_table[][3] = {
144 /*{ARM_CLK, DIVarm, DIVhclk}*/
145 {L0 * 1000, (0 << ARM_DIV_RATIO_SHIFT), (3 << S5P_CLKDIV0_HCLK_SHIFT)},
146 {L1 * 1000, (1 << ARM_DIV_RATIO_SHIFT), (1 << S5P_CLKDIV0_HCLK_SHIFT)},
147 {L2 * 1000, (3 << ARM_DIV_RATIO_SHIFT), (0 << S5P_CLKDIV0_HCLK_SHIFT)},
148 };
149
150 static unsigned long s5p6440_armclk_get_rate(struct clk *clk)
151 {
152 unsigned long rate = clk_get_rate(clk->parent);
153 u32 clkdiv;
154
155 /* divisor mask starts at bit0, so no need to shift */
156 clkdiv = __raw_readl(ARM_CLK_DIV) & ARM_DIV_MASK;
157
158 return rate / (clkdiv + 1);
159 }
160
161 static unsigned long s5p6440_armclk_round_rate(struct clk *clk,
162 unsigned long rate)
163 {
164 u32 iter;
165
166 for (iter = 1 ; iter < ARRAY_SIZE(clock_table) ; iter++) {
167 if (rate > clock_table[iter][0])
168 return clock_table[iter-1][0];
169 }
170
171 return clock_table[ARRAY_SIZE(clock_table) - 1][0];
172 }
173
174 static int s5p6440_armclk_set_rate(struct clk *clk, unsigned long rate)
175 {
176 u32 round_tmp;
177 u32 iter;
178 u32 clk_div0_tmp;
179 u32 cur_rate = clk->ops->get_rate(clk);
180 unsigned long flags;
181
182 round_tmp = clk->ops->round_rate(clk, rate);
183 if (round_tmp == cur_rate)
184 return 0;
185
186
187 for (iter = 0 ; iter < ARRAY_SIZE(clock_table) ; iter++) {
188 if (round_tmp == clock_table[iter][0])
189 break;
190 }
191
192 if (iter >= ARRAY_SIZE(clock_table))
193 iter = ARRAY_SIZE(clock_table) - 1;
194
195 local_irq_save(flags);
196 if (cur_rate > round_tmp) {
197 /* Frequency Down */
198 clk_div0_tmp = __raw_readl(ARM_CLK_DIV) & ~(ARM_DIV_MASK);
199 clk_div0_tmp |= clock_table[iter][1];
200 __raw_writel(clk_div0_tmp, ARM_CLK_DIV);
201
202 clk_div0_tmp = __raw_readl(ARM_CLK_DIV) &
203 ~(S5P_CLKDIV0_HCLK_MASK);
204 clk_div0_tmp |= clock_table[iter][2];
205 __raw_writel(clk_div0_tmp, ARM_CLK_DIV);
206
207
208 } else {
209 /* Frequency Up */
210 clk_div0_tmp = __raw_readl(ARM_CLK_DIV) &
211 ~(S5P_CLKDIV0_HCLK_MASK);
212 clk_div0_tmp |= clock_table[iter][2];
213 __raw_writel(clk_div0_tmp, ARM_CLK_DIV);
214
215 clk_div0_tmp = __raw_readl(ARM_CLK_DIV) & ~(ARM_DIV_MASK);
216 clk_div0_tmp |= clock_table[iter][1];
217 __raw_writel(clk_div0_tmp, ARM_CLK_DIV);
218 }
219 local_irq_restore(flags);
220
221 clk->rate = clock_table[iter][0];
222
223 return 0;
224 }
225
226 static struct clk_ops s5p6440_clkarm_ops = {
227 .get_rate = s5p6440_armclk_get_rate,
228 .set_rate = s5p6440_armclk_set_rate,
229 .round_rate = s5p6440_armclk_round_rate,
230 };
231
232 static struct clksrc_clk clk_armclk = {
233 .clk = {
234 .name = "armclk",
235 .id = 1,
236 .parent = &clk_mout_apll.clk,
237 .ops = &s5p6440_clkarm_ops,
238 },
239 .reg_div = { .reg = S5P_CLK_DIV0, .shift = 0, .size = 4 },
240 };
241
242 static struct clksrc_clk clk_dout_mpll = {
243 .clk = {
244 .name = "dout_mpll",
245 .id = -1,
246 .parent = &clk_mout_mpll.clk,
247 },
248 .reg_div = { .reg = S5P_CLK_DIV0, .shift = 4, .size = 1 },
249 };
250
251 static struct clksrc_clk clk_hclk = {
252 .clk = {
253 .name = "clk_hclk",
254 .id = -1,
255 .parent = &clk_armclk.clk,
256 },
257 .reg_div = { .reg = S5P_CLK_DIV0, .shift = 8, .size = 4 },
258 };
259
260 static struct clksrc_clk clk_pclk = {
261 .clk = {
262 .name = "clk_pclk",
263 .id = -1,
264 .parent = &clk_hclk.clk,
265 },
266 .reg_div = { .reg = S5P_CLK_DIV0, .shift = 12, .size = 4 },
267 };
268
269 static struct clk *clkset_hclklow_list[] = {
270 &clk_mout_apll.clk,
271 &clk_mout_mpll.clk,
272 };
273
274 static struct clksrc_sources clkset_hclklow = {
275 .sources = clkset_hclklow_list,
276 .nr_sources = ARRAY_SIZE(clkset_hclklow_list),
277 };
278
279 static struct clksrc_clk clk_hclk_low = {
280 .clk = {
281 .name = "hclk_low",
282 .id = -1,
283 },
284 .sources = &clkset_hclklow,
285 .reg_src = { .reg = S5P_SYS_OTHERS, .shift = 6, .size = 1 },
286 .reg_div = { .reg = S5P_CLK_DIV3, .shift = 8, .size = 4 },
287 };
288
289 static struct clksrc_clk clk_pclk_low = {
290 .clk = {
291 .name = "pclk_low",
292 .id = -1,
293 .parent = &clk_hclk_low.clk,
294 },
295 .reg_div = { .reg = S5P_CLK_DIV3, .shift = 12, .size = 4 },
296 };
297
298 int s5p6440_clk48m_ctrl(struct clk *clk, int enable)
299 {
300 unsigned long flags;
301 u32 val;
302
303 /* can't rely on clock lock, this register has other usages */
304 local_irq_save(flags);
305
306 val = __raw_readl(S5P_OTHERS);
307 if (enable)
308 val |= S5P_OTHERS_USB_SIG_MASK;
309 else
310 val &= ~S5P_OTHERS_USB_SIG_MASK;
311
312 __raw_writel(val, S5P_OTHERS);
313
314 local_irq_restore(flags);
315
316 return 0;
317 }
318
319 static int s5p6440_pclk_ctrl(struct clk *clk, int enable)
320 {
321 return s5p_gatectrl(S5P_CLK_GATE_PCLK, clk, enable);
322 }
323
324 static int s5p6440_hclk0_ctrl(struct clk *clk, int enable)
325 {
326 return s5p_gatectrl(S5P_CLK_GATE_HCLK0, clk, enable);
327 }
328
329 static int s5p6440_hclk1_ctrl(struct clk *clk, int enable)
330 {
331 return s5p_gatectrl(S5P_CLK_GATE_HCLK1, clk, enable);
332 }
333
334 static int s5p6440_sclk_ctrl(struct clk *clk, int enable)
335 {
336 return s5p_gatectrl(S5P_CLK_GATE_SCLK0, clk, enable);
337 }
338
339 static int s5p6440_sclk1_ctrl(struct clk *clk, int enable)
340 {
341 return s5p_gatectrl(S5P_CLK_GATE_SCLK1, clk, enable);
342 }
343
344 static int s5p6440_mem_ctrl(struct clk *clk, int enable)
345 {
346 return s5p_gatectrl(S5P_CLK_GATE_MEM0, clk, enable);
347 }
348
349 /*
350 * The following clocks will be disabled during clock initialization. It is
351 * recommended to keep the following clocks disabled until the driver requests
352 * for enabling the clock.
353 */
354 static struct clk init_clocks_disable[] = {
355 {
356 .name = "nand",
357 .id = -1,
358 .parent = &clk_hclk.clk,
359 .enable = s5p6440_mem_ctrl,
360 .ctrlbit = S5P_CLKCON_MEM0_HCLK_NFCON,
361 }, {
362 .name = "adc",
363 .id = -1,
364 .parent = &clk_pclk_low.clk,
365 .enable = s5p6440_pclk_ctrl,
366 .ctrlbit = S5P_CLKCON_PCLK_TSADC,
367 }, {
368 .name = "i2c",
369 .id = -1,
370 .parent = &clk_pclk_low.clk,
371 .enable = s5p6440_pclk_ctrl,
372 .ctrlbit = S5P_CLKCON_PCLK_IIC0,
373 }, {
374 .name = "i2s_v40",
375 .id = 0,
376 .parent = &clk_pclk_low.clk,
377 .enable = s5p6440_pclk_ctrl,
378 .ctrlbit = S5P_CLKCON_PCLK_IIS2,
379 }, {
380 .name = "spi",
381 .id = 0,
382 .parent = &clk_pclk_low.clk,
383 .enable = s5p6440_pclk_ctrl,
384 .ctrlbit = S5P_CLKCON_PCLK_SPI0,
385 }, {
386 .name = "spi",
387 .id = 1,
388 .parent = &clk_pclk_low.clk,
389 .enable = s5p6440_pclk_ctrl,
390 .ctrlbit = S5P_CLKCON_PCLK_SPI1,
391 }, {
392 .name = "sclk_spi_48",
393 .id = 0,
394 .parent = &clk_48m,
395 .enable = s5p6440_sclk_ctrl,
396 .ctrlbit = S5P_CLKCON_SCLK0_SPI0_48,
397 }, {
398 .name = "sclk_spi_48",
399 .id = 1,
400 .parent = &clk_48m,
401 .enable = s5p6440_sclk_ctrl,
402 .ctrlbit = S5P_CLKCON_SCLK0_SPI1_48,
403 }, {
404 .name = "mmc_48m",
405 .id = 0,
406 .parent = &clk_48m,
407 .enable = s5p6440_sclk_ctrl,
408 .ctrlbit = S5P_CLKCON_SCLK0_MMC0_48,
409 }, {
410 .name = "mmc_48m",
411 .id = 1,
412 .parent = &clk_48m,
413 .enable = s5p6440_sclk_ctrl,
414 .ctrlbit = S5P_CLKCON_SCLK0_MMC1_48,
415 }, {
416 .name = "mmc_48m",
417 .id = 2,
418 .parent = &clk_48m,
419 .enable = s5p6440_sclk_ctrl,
420 .ctrlbit = S5P_CLKCON_SCLK0_MMC2_48,
421 }, {
422 .name = "otg",
423 .id = -1,
424 .parent = &clk_hclk_low.clk,
425 .enable = s5p6440_hclk0_ctrl,
426 .ctrlbit = S5P_CLKCON_HCLK0_USB
427 }, {
428 .name = "post",
429 .id = -1,
430 .parent = &clk_hclk_low.clk,
431 .enable = s5p6440_hclk0_ctrl,
432 .ctrlbit = S5P_CLKCON_HCLK0_POST0
433 }, {
434 .name = "lcd",
435 .id = -1,
436 .parent = &clk_hclk_low.clk,
437 .enable = s5p6440_hclk1_ctrl,
438 .ctrlbit = S5P_CLKCON_HCLK1_DISPCON,
439 }, {
440 .name = "hsmmc",
441 .id = 0,
442 .parent = &clk_hclk_low.clk,
443 .enable = s5p6440_hclk0_ctrl,
444 .ctrlbit = S5P_CLKCON_HCLK0_HSMMC0,
445 }, {
446 .name = "hsmmc",
447 .id = 1,
448 .parent = &clk_hclk_low.clk,
449 .enable = s5p6440_hclk0_ctrl,
450 .ctrlbit = S5P_CLKCON_HCLK0_HSMMC1,
451 }, {
452 .name = "hsmmc",
453 .id = 2,
454 .parent = &clk_hclk_low.clk,
455 .enable = s5p6440_hclk0_ctrl,
456 .ctrlbit = S5P_CLKCON_HCLK0_HSMMC2,
457 }, {
458 .name = "rtc",
459 .id = -1,
460 .parent = &clk_pclk_low.clk,
461 .enable = s5p6440_pclk_ctrl,
462 .ctrlbit = S5P_CLKCON_PCLK_RTC,
463 }, {
464 .name = "watchdog",
465 .id = -1,
466 .parent = &clk_pclk_low.clk,
467 .enable = s5p6440_pclk_ctrl,
468 .ctrlbit = S5P_CLKCON_PCLK_WDT,
469 }, {
470 .name = "timers",
471 .id = -1,
472 .parent = &clk_pclk_low.clk,
473 .enable = s5p6440_pclk_ctrl,
474 .ctrlbit = S5P_CLKCON_PCLK_PWM,
475 }, {
476 .name = "hclk_fimgvg",
477 .id = -1,
478 .parent = &clk_hclk.clk,
479 .enable = s5p6440_hclk1_ctrl,
480 .ctrlbit = (1 << 2),
481 }, {
482 .name = "tsi",
483 .id = -1,
484 .parent = &clk_hclk_low.clk,
485 .enable = s5p6440_hclk1_ctrl,
486 .ctrlbit = (1 << 0),
487 }, {
488 .name = "pclk_fimgvg",
489 .id = -1,
490 .parent = &clk_pclk.clk,
491 .enable = s5p6440_pclk_ctrl,
492 .ctrlbit = (1 << 31),
493 }, {
494 .name = "dmc0",
495 .id = -1,
496 .parent = &clk_pclk.clk,
497 .enable = s5p6440_pclk_ctrl,
498 .ctrlbit = (1 << 30),
499 }, {
500 .name = "etm",
501 .id = -1,
502 .parent = &clk_pclk.clk,
503 .enable = s5p6440_pclk_ctrl,
504 .ctrlbit = (1 << 29),
505 }, {
506 .name = "dsim",
507 .id = -1,
508 .parent = &clk_pclk_low.clk,
509 .enable = s5p6440_pclk_ctrl,
510 .ctrlbit = (1 << 28),
511 }, {
512 .name = "gps",
513 .id = -1,
514 .parent = &clk_pclk_low.clk,
515 .enable = s5p6440_pclk_ctrl,
516 .ctrlbit = (1 << 25),
517 }, {
518 .name = "pcm",
519 .id = -1,
520 .parent = &clk_pclk_low.clk,
521 .enable = s5p6440_pclk_ctrl,
522 .ctrlbit = (1 << 8),
523 }, {
524 .name = "irom",
525 .id = -1,
526 .parent = &clk_hclk.clk,
527 .enable = s5p6440_hclk0_ctrl,
528 .ctrlbit = (1 << 25),
529 }, {
530 .name = "dma",
531 .id = -1,
532 .parent = &clk_hclk_low.clk,
533 .enable = s5p6440_hclk0_ctrl,
534 .ctrlbit = (1 << 12),
535 }, {
536 .name = "2d",
537 .id = -1,
538 .parent = &clk_hclk.clk,
539 .enable = s5p6440_hclk0_ctrl,
540 .ctrlbit = (1 << 8),
541 },
542 };
543
544 /*
545 * The following clocks will be enabled during clock initialization.
546 */
547 static struct clk init_clocks[] = {
548 {
549 .name = "gpio",
550 .id = -1,
551 .parent = &clk_pclk_low.clk,
552 .enable = s5p6440_pclk_ctrl,
553 .ctrlbit = S5P_CLKCON_PCLK_GPIO,
554 }, {
555 .name = "uart",
556 .id = 0,
557 .parent = &clk_pclk_low.clk,
558 .enable = s5p6440_pclk_ctrl,
559 .ctrlbit = S5P_CLKCON_PCLK_UART0,
560 }, {
561 .name = "uart",
562 .id = 1,
563 .parent = &clk_pclk_low.clk,
564 .enable = s5p6440_pclk_ctrl,
565 .ctrlbit = S5P_CLKCON_PCLK_UART1,
566 }, {
567 .name = "uart",
568 .id = 2,
569 .parent = &clk_pclk_low.clk,
570 .enable = s5p6440_pclk_ctrl,
571 .ctrlbit = S5P_CLKCON_PCLK_UART2,
572 }, {
573 .name = "uart",
574 .id = 3,
575 .parent = &clk_pclk_low.clk,
576 .enable = s5p6440_pclk_ctrl,
577 .ctrlbit = S5P_CLKCON_PCLK_UART3,
578 }, {
579 .name = "mem",
580 .id = -1,
581 .parent = &clk_hclk.clk,
582 .enable = s5p6440_hclk0_ctrl,
583 .ctrlbit = (1 << 21),
584 }, {
585 .name = "intc",
586 .id = -1,
587 .parent = &clk_hclk.clk,
588 .enable = s5p6440_hclk0_ctrl,
589 .ctrlbit = (1 << 1),
590 },
591 };
592
593 static struct clk clk_iis_cd_v40 = {
594 .name = "iis_cdclk_v40",
595 .id = -1,
596 };
597
598 static struct clk clk_pcm_cd = {
599 .name = "pcm_cdclk",
600 .id = -1,
601 };
602
603 static struct clk *clkset_group1_list[] = {
604 &clk_mout_epll.clk,
605 &clk_dout_mpll.clk,
606 &clk_fin_epll,
607 };
608
609 static struct clksrc_sources clkset_group1 = {
610 .sources = clkset_group1_list,
611 .nr_sources = ARRAY_SIZE(clkset_group1_list),
612 };
613
614 static struct clk *clkset_uart_list[] = {
615 &clk_mout_epll.clk,
616 &clk_dout_mpll.clk,
617 };
618
619 static struct clksrc_sources clkset_uart = {
620 .sources = clkset_uart_list,
621 .nr_sources = ARRAY_SIZE(clkset_uart_list),
622 };
623
624 static struct clk *clkset_audio_list[] = {
625 &clk_mout_epll.clk,
626 &clk_dout_mpll.clk,
627 &clk_fin_epll,
628 &clk_iis_cd_v40,
629 &clk_pcm_cd,
630 };
631
632 static struct clksrc_sources clkset_audio = {
633 .sources = clkset_audio_list,
634 .nr_sources = ARRAY_SIZE(clkset_audio_list),
635 };
636
637 static struct clksrc_clk clksrcs[] = {
638 {
639 .clk = {
640 .name = "mmc_bus",
641 .id = 0,
642 .ctrlbit = S5P_CLKCON_SCLK0_MMC0,
643 .enable = s5p6440_sclk_ctrl,
644 },
645 .sources = &clkset_group1,
646 .reg_src = { .reg = S5P_CLK_SRC0, .shift = 18, .size = 2 },
647 .reg_div = { .reg = S5P_CLK_DIV1, .shift = 0, .size = 4 },
648 }, {
649 .clk = {
650 .name = "mmc_bus",
651 .id = 1,
652 .ctrlbit = S5P_CLKCON_SCLK0_MMC1,
653 .enable = s5p6440_sclk_ctrl,
654 },
655 .sources = &clkset_group1,
656 .reg_src = { .reg = S5P_CLK_SRC0, .shift = 20, .size = 2 },
657 .reg_div = { .reg = S5P_CLK_DIV1, .shift = 4, .size = 4 },
658 }, {
659 .clk = {
660 .name = "mmc_bus",
661 .id = 2,
662 .ctrlbit = S5P_CLKCON_SCLK0_MMC2,
663 .enable = s5p6440_sclk_ctrl,
664 },
665 .sources = &clkset_group1,
666 .reg_src = { .reg = S5P_CLK_SRC0, .shift = 22, .size = 2 },
667 .reg_div = { .reg = S5P_CLK_DIV1, .shift = 8, .size = 4 },
668 }, {
669 .clk = {
670 .name = "uclk1",
671 .id = -1,
672 .ctrlbit = S5P_CLKCON_SCLK0_UART,
673 .enable = s5p6440_sclk_ctrl,
674 },
675 .sources = &clkset_uart,
676 .reg_src = { .reg = S5P_CLK_SRC0, .shift = 13, .size = 1 },
677 .reg_div = { .reg = S5P_CLK_DIV2, .shift = 16, .size = 4 },
678 }, {
679 .clk = {
680 .name = "spi_epll",
681 .id = 0,
682 .ctrlbit = S5P_CLKCON_SCLK0_SPI0,
683 .enable = s5p6440_sclk_ctrl,
684 },
685 .sources = &clkset_group1,
686 .reg_src = { .reg = S5P_CLK_SRC0, .shift = 14, .size = 2 },
687 .reg_div = { .reg = S5P_CLK_DIV2, .shift = 0, .size = 4 },
688 }, {
689 .clk = {
690 .name = "spi_epll",
691 .id = 1,
692 .ctrlbit = S5P_CLKCON_SCLK0_SPI1,
693 .enable = s5p6440_sclk_ctrl,
694 },
695 .sources = &clkset_group1,
696 .reg_src = { .reg = S5P_CLK_SRC0, .shift = 16, .size = 2 },
697 .reg_div = { .reg = S5P_CLK_DIV2, .shift = 4, .size = 4 },
698 }, {
699 .clk = {
700 .name = "sclk_post",
701 .id = -1,
702 .ctrlbit = (1 << 10),
703 .enable = s5p6440_sclk_ctrl,
704 },
705 .sources = &clkset_group1,
706 .reg_src = { .reg = S5P_CLK_SRC0, .shift = 26, .size = 2 },
707 .reg_div = { .reg = S5P_CLK_DIV1, .shift = 12, .size = 4 },
708 }, {
709 .clk = {
710 .name = "sclk_dispcon",
711 .id = -1,
712 .ctrlbit = (1 << 1),
713 .enable = s5p6440_sclk1_ctrl,
714 },
715 .sources = &clkset_group1,
716 .reg_src = { .reg = S5P_CLK_SRC1, .shift = 4, .size = 2 },
717 .reg_div = { .reg = S5P_CLK_DIV3, .shift = 0, .size = 4 },
718 }, {
719 .clk = {
720 .name = "sclk_fimgvg",
721 .id = -1,
722 .ctrlbit = (1 << 2),
723 .enable = s5p6440_sclk1_ctrl,
724 },
725 .sources = &clkset_group1,
726 .reg_src = { .reg = S5P_CLK_SRC1, .shift = 8, .size = 2 },
727 .reg_div = { .reg = S5P_CLK_DIV3, .shift = 4, .size = 4 },
728 }, {
729 .clk = {
730 .name = "sclk_audio2",
731 .id = -1,
732 .ctrlbit = (1 << 11),
733 .enable = s5p6440_sclk_ctrl,
734 },
735 .sources = &clkset_audio,
736 .reg_src = { .reg = S5P_CLK_SRC1, .shift = 0, .size = 3 },
737 .reg_div = { .reg = S5P_CLK_DIV2, .shift = 24, .size = 4 },
738 },
739 };
740
741 /* Clock initialisation code */
742 static struct clksrc_clk *sysclks[] = {
743 &clk_mout_apll,
744 &clk_mout_epll,
745 &clk_mout_mpll,
746 &clk_dout_mpll,
747 &clk_armclk,
748 &clk_hclk,
749 &clk_pclk,
750 &clk_hclk_low,
751 &clk_pclk_low,
752 };
753
754 void __init_or_cpufreq s5p6440_setup_clocks(void)
755 {
756 struct clk *xtal_clk;
757 unsigned long xtal;
758 unsigned long fclk;
759 unsigned long hclk;
760 unsigned long hclk_low;
761 unsigned long pclk;
762 unsigned long pclk_low;
763 unsigned long epll;
764 unsigned long apll;
765 unsigned long mpll;
766 unsigned int ptr;
767
768 /* Set S5P6440 functions for clk_fout_epll */
769 clk_fout_epll.enable = s5p6440_epll_enable;
770 clk_fout_epll.ops = &s5p6440_epll_ops;
771
772 clk_48m.enable = s5p6440_clk48m_ctrl;
773
774 xtal_clk = clk_get(NULL, "ext_xtal");
775 BUG_ON(IS_ERR(xtal_clk));
776
777 xtal = clk_get_rate(xtal_clk);
778 clk_put(xtal_clk);
779
780 epll = s5p_get_pll90xx(xtal, __raw_readl(S5P_EPLL_CON),
781 __raw_readl(S5P_EPLL_CON_K));
782 mpll = s5p_get_pll45xx(xtal, __raw_readl(S5P_MPLL_CON), pll_4502);
783 apll = s5p_get_pll45xx(xtal, __raw_readl(S5P_APLL_CON), pll_4502);
784
785 clk_fout_mpll.rate = mpll;
786 clk_fout_epll.rate = epll;
787 clk_fout_apll.rate = apll;
788
789 printk(KERN_INFO "S5P6440: PLL settings, A=%ld.%ldMHz, M=%ld.%ldMHz," \
790 " E=%ld.%ldMHz\n",
791 print_mhz(apll), print_mhz(mpll), print_mhz(epll));
792
793 fclk = clk_get_rate(&clk_armclk.clk);
794 hclk = clk_get_rate(&clk_hclk.clk);
795 pclk = clk_get_rate(&clk_pclk.clk);
796 hclk_low = clk_get_rate(&clk_hclk_low.clk);
797 pclk_low = clk_get_rate(&clk_pclk_low.clk);
798
799 printk(KERN_INFO "S5P6440: HCLK=%ld.%ldMHz, HCLK_LOW=%ld.%ldMHz," \
800 " PCLK=%ld.%ldMHz, PCLK_LOW=%ld.%ldMHz\n",
801 print_mhz(hclk), print_mhz(hclk_low),
802 print_mhz(pclk), print_mhz(pclk_low));
803
804 clk_f.rate = fclk;
805 clk_h.rate = hclk;
806 clk_p.rate = pclk;
807
808 for (ptr = 0; ptr < ARRAY_SIZE(clksrcs); ptr++)
809 s3c_set_clksrc(&clksrcs[ptr], true);
810 }
811
812 static struct clk *clks[] __initdata = {
813 &clk_ext,
814 &clk_iis_cd_v40,
815 &clk_pcm_cd,
816 };
817
818 void __init s5p6440_register_clocks(void)
819 {
820 struct clk *clkp;
821 int ret;
822 int ptr;
823
824 ret = s3c24xx_register_clocks(clks, ARRAY_SIZE(clks));
825 if (ret > 0)
826 printk(KERN_ERR "Failed to register %u clocks\n", ret);
827
828 for (ptr = 0; ptr < ARRAY_SIZE(sysclks); ptr++)
829 s3c_register_clksrc(sysclks[ptr], 1);
830
831 s3c_register_clksrc(clksrcs, ARRAY_SIZE(clksrcs));
832 s3c_register_clocks(init_clocks, ARRAY_SIZE(init_clocks));
833
834 clkp = init_clocks_disable;
835 for (ptr = 0; ptr < ARRAY_SIZE(init_clocks_disable); ptr++, clkp++) {
836
837 ret = s3c24xx_register_clock(clkp);
838 if (ret < 0) {
839 printk(KERN_ERR "Failed to register clock %s (%d)\n",
840 clkp->name, ret);
841 }
842 (clkp->enable)(clkp, 0);
843 }
844
845 s3c_pwmclk_init();
846 }
Linux with added FPC-III support