1 /*
2 * IMX6 Clock Control Module
3 *
4 * Copyright (c) 2015 Jean-Christophe Dubois <jcd@tribudubois.net>
5 *
6 * This work is licensed under the terms of the GNU GPL, version 2 or later.
7 * See the COPYING file in the top-level directory.
8 *
9 * To get the timer frequencies right, we need to emulate at least part of
10 * the CCM.
11 */
12
13 #include "qemu/osdep.h"
14 #include "hw/misc/imx6_ccm.h"
15 #include "migration/vmstate.h"
16 #include "qemu/log.h"
17 #include "qemu/module.h"
18 #include "trace.h"
19
imx6_ccm_reg_name(uint32_t reg)20 static const char *imx6_ccm_reg_name(uint32_t reg)
21 {
22 static char unknown[20];
23
24 switch (reg) {
25 case CCM_CCR:
26 return "CCR";
27 case CCM_CCDR:
28 return "CCDR";
29 case CCM_CSR:
30 return "CSR";
31 case CCM_CCSR:
32 return "CCSR";
33 case CCM_CACRR:
34 return "CACRR";
35 case CCM_CBCDR:
36 return "CBCDR";
37 case CCM_CBCMR:
38 return "CBCMR";
39 case CCM_CSCMR1:
40 return "CSCMR1";
41 case CCM_CSCMR2:
42 return "CSCMR2";
43 case CCM_CSCDR1:
44 return "CSCDR1";
45 case CCM_CS1CDR:
46 return "CS1CDR";
47 case CCM_CS2CDR:
48 return "CS2CDR";
49 case CCM_CDCDR:
50 return "CDCDR";
51 case CCM_CHSCCDR:
52 return "CHSCCDR";
53 case CCM_CSCDR2:
54 return "CSCDR2";
55 case CCM_CSCDR3:
56 return "CSCDR3";
57 case CCM_CDHIPR:
58 return "CDHIPR";
59 case CCM_CTOR:
60 return "CTOR";
61 case CCM_CLPCR:
62 return "CLPCR";
63 case CCM_CISR:
64 return "CISR";
65 case CCM_CIMR:
66 return "CIMR";
67 case CCM_CCOSR:
68 return "CCOSR";
69 case CCM_CGPR:
70 return "CGPR";
71 case CCM_CCGR0:
72 return "CCGR0";
73 case CCM_CCGR1:
74 return "CCGR1";
75 case CCM_CCGR2:
76 return "CCGR2";
77 case CCM_CCGR3:
78 return "CCGR3";
79 case CCM_CCGR4:
80 return "CCGR4";
81 case CCM_CCGR5:
82 return "CCGR5";
83 case CCM_CCGR6:
84 return "CCGR6";
85 case CCM_CMEOR:
86 return "CMEOR";
87 default:
88 snprintf(unknown, sizeof(unknown), "%u ?", reg);
89 return unknown;
90 }
91 }
92
imx6_analog_reg_name(uint32_t reg)93 static const char *imx6_analog_reg_name(uint32_t reg)
94 {
95 static char unknown[20];
96
97 switch (reg) {
98 case CCM_ANALOG_PLL_ARM:
99 return "PLL_ARM";
100 case CCM_ANALOG_PLL_ARM_SET:
101 return "PLL_ARM_SET";
102 case CCM_ANALOG_PLL_ARM_CLR:
103 return "PLL_ARM_CLR";
104 case CCM_ANALOG_PLL_ARM_TOG:
105 return "PLL_ARM_TOG";
106 case CCM_ANALOG_PLL_USB1:
107 return "PLL_USB1";
108 case CCM_ANALOG_PLL_USB1_SET:
109 return "PLL_USB1_SET";
110 case CCM_ANALOG_PLL_USB1_CLR:
111 return "PLL_USB1_CLR";
112 case CCM_ANALOG_PLL_USB1_TOG:
113 return "PLL_USB1_TOG";
114 case CCM_ANALOG_PLL_USB2:
115 return "PLL_USB2";
116 case CCM_ANALOG_PLL_USB2_SET:
117 return "PLL_USB2_SET";
118 case CCM_ANALOG_PLL_USB2_CLR:
119 return "PLL_USB2_CLR";
120 case CCM_ANALOG_PLL_USB2_TOG:
121 return "PLL_USB2_TOG";
122 case CCM_ANALOG_PLL_SYS:
123 return "PLL_SYS";
124 case CCM_ANALOG_PLL_SYS_SET:
125 return "PLL_SYS_SET";
126 case CCM_ANALOG_PLL_SYS_CLR:
127 return "PLL_SYS_CLR";
128 case CCM_ANALOG_PLL_SYS_TOG:
129 return "PLL_SYS_TOG";
130 case CCM_ANALOG_PLL_SYS_SS:
131 return "PLL_SYS_SS";
132 case CCM_ANALOG_PLL_SYS_NUM:
133 return "PLL_SYS_NUM";
134 case CCM_ANALOG_PLL_SYS_DENOM:
135 return "PLL_SYS_DENOM";
136 case CCM_ANALOG_PLL_AUDIO:
137 return "PLL_AUDIO";
138 case CCM_ANALOG_PLL_AUDIO_SET:
139 return "PLL_AUDIO_SET";
140 case CCM_ANALOG_PLL_AUDIO_CLR:
141 return "PLL_AUDIO_CLR";
142 case CCM_ANALOG_PLL_AUDIO_TOG:
143 return "PLL_AUDIO_TOG";
144 case CCM_ANALOG_PLL_AUDIO_NUM:
145 return "PLL_AUDIO_NUM";
146 case CCM_ANALOG_PLL_AUDIO_DENOM:
147 return "PLL_AUDIO_DENOM";
148 case CCM_ANALOG_PLL_VIDEO:
149 return "PLL_VIDEO";
150 case CCM_ANALOG_PLL_VIDEO_SET:
151 return "PLL_VIDEO_SET";
152 case CCM_ANALOG_PLL_VIDEO_CLR:
153 return "PLL_VIDEO_CLR";
154 case CCM_ANALOG_PLL_VIDEO_TOG:
155 return "PLL_VIDEO_TOG";
156 case CCM_ANALOG_PLL_VIDEO_NUM:
157 return "PLL_VIDEO_NUM";
158 case CCM_ANALOG_PLL_VIDEO_DENOM:
159 return "PLL_VIDEO_DENOM";
160 case CCM_ANALOG_PLL_MLB:
161 return "PLL_MLB";
162 case CCM_ANALOG_PLL_MLB_SET:
163 return "PLL_MLB_SET";
164 case CCM_ANALOG_PLL_MLB_CLR:
165 return "PLL_MLB_CLR";
166 case CCM_ANALOG_PLL_MLB_TOG:
167 return "PLL_MLB_TOG";
168 case CCM_ANALOG_PLL_ENET:
169 return "PLL_ENET";
170 case CCM_ANALOG_PLL_ENET_SET:
171 return "PLL_ENET_SET";
172 case CCM_ANALOG_PLL_ENET_CLR:
173 return "PLL_ENET_CLR";
174 case CCM_ANALOG_PLL_ENET_TOG:
175 return "PLL_ENET_TOG";
176 case CCM_ANALOG_PFD_480:
177 return "PFD_480";
178 case CCM_ANALOG_PFD_480_SET:
179 return "PFD_480_SET";
180 case CCM_ANALOG_PFD_480_CLR:
181 return "PFD_480_CLR";
182 case CCM_ANALOG_PFD_480_TOG:
183 return "PFD_480_TOG";
184 case CCM_ANALOG_PFD_528:
185 return "PFD_528";
186 case CCM_ANALOG_PFD_528_SET:
187 return "PFD_528_SET";
188 case CCM_ANALOG_PFD_528_CLR:
189 return "PFD_528_CLR";
190 case CCM_ANALOG_PFD_528_TOG:
191 return "PFD_528_TOG";
192 case CCM_ANALOG_MISC0:
193 return "MISC0";
194 case CCM_ANALOG_MISC0_SET:
195 return "MISC0_SET";
196 case CCM_ANALOG_MISC0_CLR:
197 return "MISC0_CLR";
198 case CCM_ANALOG_MISC0_TOG:
199 return "MISC0_TOG";
200 case CCM_ANALOG_MISC2:
201 return "MISC2";
202 case CCM_ANALOG_MISC2_SET:
203 return "MISC2_SET";
204 case CCM_ANALOG_MISC2_CLR:
205 return "MISC2_CLR";
206 case CCM_ANALOG_MISC2_TOG:
207 return "MISC2_TOG";
208 case PMU_REG_1P1:
209 return "PMU_REG_1P1";
210 case PMU_REG_3P0:
211 return "PMU_REG_3P0";
212 case PMU_REG_2P5:
213 return "PMU_REG_2P5";
214 case PMU_REG_CORE:
215 return "PMU_REG_CORE";
216 case PMU_MISC1:
217 return "PMU_MISC1";
218 case PMU_MISC1_SET:
219 return "PMU_MISC1_SET";
220 case PMU_MISC1_CLR:
221 return "PMU_MISC1_CLR";
222 case PMU_MISC1_TOG:
223 return "PMU_MISC1_TOG";
224 case USB_ANALOG_DIGPROG:
225 return "USB_ANALOG_DIGPROG";
226 default:
227 snprintf(unknown, sizeof(unknown), "%u ?", reg);
228 return unknown;
229 }
230 }
231
232 #define CKIH_FREQ 24000000 /* 24MHz crystal input */
233
234 static const VMStateDescription vmstate_imx6_ccm = {
235 .name = TYPE_IMX6_CCM,
236 .version_id = 1,
237 .minimum_version_id = 1,
238 .fields = (const VMStateField[]) {
239 VMSTATE_UINT32_ARRAY(ccm, IMX6CCMState, CCM_MAX),
240 VMSTATE_UINT32_ARRAY(analog, IMX6CCMState, CCM_ANALOG_MAX),
241 VMSTATE_END_OF_LIST()
242 },
243 };
244
imx6_analog_get_pll2_clk(IMX6CCMState * dev)245 static uint64_t imx6_analog_get_pll2_clk(IMX6CCMState *dev)
246 {
247 uint64_t freq = 24000000;
248
249 if (EXTRACT(dev->analog[CCM_ANALOG_PLL_SYS], DIV_SELECT)) {
250 freq *= 22;
251 } else {
252 freq *= 20;
253 }
254
255 trace_imx6_analog_get_pll2_clk(freq);
256
257 return freq;
258 }
259
imx6_analog_get_pll2_pfd0_clk(IMX6CCMState * dev)260 static uint64_t imx6_analog_get_pll2_pfd0_clk(IMX6CCMState *dev)
261 {
262 uint64_t freq = 0;
263
264 freq = imx6_analog_get_pll2_clk(dev) * 18
265 / EXTRACT(dev->analog[CCM_ANALOG_PFD_528], PFD0_FRAC);
266
267 trace_imx6_analog_get_pll2_pfd0_clk(freq);
268
269 return freq;
270 }
271
imx6_analog_get_pll2_pfd2_clk(IMX6CCMState * dev)272 static uint64_t imx6_analog_get_pll2_pfd2_clk(IMX6CCMState *dev)
273 {
274 uint64_t freq = 0;
275
276 freq = imx6_analog_get_pll2_clk(dev) * 18
277 / EXTRACT(dev->analog[CCM_ANALOG_PFD_528], PFD2_FRAC);
278
279 trace_imx6_analog_get_pll2_pfd2_clk(freq);
280
281 return freq;
282 }
283
imx6_analog_get_periph_clk(IMX6CCMState * dev)284 static uint64_t imx6_analog_get_periph_clk(IMX6CCMState *dev)
285 {
286 uint64_t freq = 0;
287
288 switch (EXTRACT(dev->ccm[CCM_CBCMR], PRE_PERIPH_CLK_SEL)) {
289 case 0:
290 freq = imx6_analog_get_pll2_clk(dev);
291 break;
292 case 1:
293 freq = imx6_analog_get_pll2_pfd2_clk(dev);
294 break;
295 case 2:
296 freq = imx6_analog_get_pll2_pfd0_clk(dev);
297 break;
298 case 3:
299 freq = imx6_analog_get_pll2_pfd2_clk(dev) / 2;
300 break;
301 default:
302 /* We should never get there */
303 g_assert_not_reached();
304 break;
305 }
306
307 trace_imx6_analog_get_periph_clk(freq);
308
309 return freq;
310 }
311
imx6_ccm_get_ahb_clk(IMX6CCMState * dev)312 static uint64_t imx6_ccm_get_ahb_clk(IMX6CCMState *dev)
313 {
314 uint64_t freq = 0;
315
316 freq = imx6_analog_get_periph_clk(dev)
317 / (1 + EXTRACT(dev->ccm[CCM_CBCDR], AHB_PODF));
318
319 trace_imx6_ccm_get_ahb_clk(freq);
320
321 return freq;
322 }
323
imx6_ccm_get_ipg_clk(IMX6CCMState * dev)324 static uint64_t imx6_ccm_get_ipg_clk(IMX6CCMState *dev)
325 {
326 uint64_t freq = 0;
327
328 freq = imx6_ccm_get_ahb_clk(dev)
329 / (1 + EXTRACT(dev->ccm[CCM_CBCDR], IPG_PODF));
330
331 trace_imx6_ccm_get_ipg_clk(freq);
332
333 return freq;
334 }
335
imx6_ccm_get_per_clk(IMX6CCMState * dev)336 static uint64_t imx6_ccm_get_per_clk(IMX6CCMState *dev)
337 {
338 uint64_t freq = 0;
339
340 freq = imx6_ccm_get_ipg_clk(dev)
341 / (1 + EXTRACT(dev->ccm[CCM_CSCMR1], PERCLK_PODF));
342
343 trace_imx6_ccm_get_per_clk(freq);
344
345 return freq;
346 }
347
imx6_ccm_get_clock_frequency(IMXCCMState * dev,IMXClk clock)348 static uint32_t imx6_ccm_get_clock_frequency(IMXCCMState *dev, IMXClk clock)
349 {
350 uint32_t freq = 0;
351 IMX6CCMState *s = IMX6_CCM(dev);
352
353 switch (clock) {
354 case CLK_NONE:
355 break;
356 case CLK_IPG:
357 freq = imx6_ccm_get_ipg_clk(s);
358 break;
359 case CLK_IPG_HIGH:
360 freq = imx6_ccm_get_per_clk(s);
361 break;
362 case CLK_32k:
363 freq = CKIL_FREQ;
364 break;
365 case CLK_HIGH:
366 freq = 24000000;
367 break;
368 case CLK_HIGH_DIV:
369 freq = 24000000 / 8;
370 break;
371 default:
372 qemu_log_mask(LOG_GUEST_ERROR, "[%s]%s: unsupported clock %d\n",
373 TYPE_IMX6_CCM, __func__, clock);
374 break;
375 }
376
377 trace_imx6_ccm_get_clock_frequency(clock, freq);
378
379 return freq;
380 }
381
imx6_ccm_reset(DeviceState * dev)382 static void imx6_ccm_reset(DeviceState *dev)
383 {
384 IMX6CCMState *s = IMX6_CCM(dev);
385
386 trace_imx6_ccm_reset();
387
388 s->ccm[CCM_CCR] = 0x040116FF;
389 s->ccm[CCM_CCDR] = 0x00000000;
390 s->ccm[CCM_CSR] = 0x00000010;
391 s->ccm[CCM_CCSR] = 0x00000100;
392 s->ccm[CCM_CACRR] = 0x00000000;
393 s->ccm[CCM_CBCDR] = 0x00018D40;
394 s->ccm[CCM_CBCMR] = 0x00022324;
395 s->ccm[CCM_CSCMR1] = 0x00F00000;
396 s->ccm[CCM_CSCMR2] = 0x02B92F06;
397 s->ccm[CCM_CSCDR1] = 0x00490B00;
398 s->ccm[CCM_CS1CDR] = 0x0EC102C1;
399 s->ccm[CCM_CS2CDR] = 0x000736C1;
400 s->ccm[CCM_CDCDR] = 0x33F71F92;
401 s->ccm[CCM_CHSCCDR] = 0x0002A150;
402 s->ccm[CCM_CSCDR2] = 0x0002A150;
403 s->ccm[CCM_CSCDR3] = 0x00014841;
404 s->ccm[CCM_CDHIPR] = 0x00000000;
405 s->ccm[CCM_CTOR] = 0x00000000;
406 s->ccm[CCM_CLPCR] = 0x00000079;
407 s->ccm[CCM_CISR] = 0x00000000;
408 s->ccm[CCM_CIMR] = 0xFFFFFFFF;
409 s->ccm[CCM_CCOSR] = 0x000A0001;
410 s->ccm[CCM_CGPR] = 0x0000FE62;
411 s->ccm[CCM_CCGR0] = 0xFFFFFFFF;
412 s->ccm[CCM_CCGR1] = 0xFFFFFFFF;
413 s->ccm[CCM_CCGR2] = 0xFC3FFFFF;
414 s->ccm[CCM_CCGR3] = 0xFFFFFFFF;
415 s->ccm[CCM_CCGR4] = 0xFFFFFFFF;
416 s->ccm[CCM_CCGR5] = 0xFFFFFFFF;
417 s->ccm[CCM_CCGR6] = 0xFFFFFFFF;
418 s->ccm[CCM_CMEOR] = 0xFFFFFFFF;
419
420 s->analog[CCM_ANALOG_PLL_ARM] = 0x00013042;
421 s->analog[CCM_ANALOG_PLL_USB1] = 0x00012000;
422 s->analog[CCM_ANALOG_PLL_USB2] = 0x00012000;
423 s->analog[CCM_ANALOG_PLL_SYS] = 0x00013001;
424 s->analog[CCM_ANALOG_PLL_SYS_SS] = 0x00000000;
425 s->analog[CCM_ANALOG_PLL_SYS_NUM] = 0x00000000;
426 s->analog[CCM_ANALOG_PLL_SYS_DENOM] = 0x00000012;
427 s->analog[CCM_ANALOG_PLL_AUDIO] = 0x00011006;
428 s->analog[CCM_ANALOG_PLL_AUDIO_NUM] = 0x05F5E100;
429 s->analog[CCM_ANALOG_PLL_AUDIO_DENOM] = 0x2964619C;
430 s->analog[CCM_ANALOG_PLL_VIDEO] = 0x0001100C;
431 s->analog[CCM_ANALOG_PLL_VIDEO_NUM] = 0x05F5E100;
432 s->analog[CCM_ANALOG_PLL_VIDEO_DENOM] = 0x10A24447;
433 s->analog[CCM_ANALOG_PLL_MLB] = 0x00010000;
434 s->analog[CCM_ANALOG_PLL_ENET] = 0x00011001;
435 s->analog[CCM_ANALOG_PFD_480] = 0x1311100C;
436 s->analog[CCM_ANALOG_PFD_528] = 0x1018101B;
437
438 s->analog[PMU_REG_1P1] = 0x00001073;
439 s->analog[PMU_REG_3P0] = 0x00000F74;
440 s->analog[PMU_REG_2P5] = 0x00005071;
441 s->analog[PMU_REG_CORE] = 0x00402010;
442 s->analog[PMU_MISC0] = 0x04000080;
443 s->analog[PMU_MISC1] = 0x00000000;
444 s->analog[PMU_MISC2] = 0x00272727;
445
446 s->analog[USB_ANALOG_USB1_VBUS_DETECT] = 0x00000004;
447 s->analog[USB_ANALOG_USB1_CHRG_DETECT] = 0x00000000;
448 s->analog[USB_ANALOG_USB1_VBUS_DETECT_STAT] = 0x00000000;
449 s->analog[USB_ANALOG_USB1_CHRG_DETECT_STAT] = 0x00000000;
450 s->analog[USB_ANALOG_USB1_MISC] = 0x00000002;
451 s->analog[USB_ANALOG_USB2_VBUS_DETECT] = 0x00000004;
452 s->analog[USB_ANALOG_USB2_CHRG_DETECT] = 0x00000000;
453 s->analog[USB_ANALOG_USB2_MISC] = 0x00000002;
454 s->analog[USB_ANALOG_DIGPROG] = 0x00630000;
455
456 /* all PLLs need to be locked */
457 s->analog[CCM_ANALOG_PLL_ARM] |= CCM_ANALOG_PLL_LOCK;
458 s->analog[CCM_ANALOG_PLL_USB1] |= CCM_ANALOG_PLL_LOCK;
459 s->analog[CCM_ANALOG_PLL_USB2] |= CCM_ANALOG_PLL_LOCK;
460 s->analog[CCM_ANALOG_PLL_SYS] |= CCM_ANALOG_PLL_LOCK;
461 s->analog[CCM_ANALOG_PLL_AUDIO] |= CCM_ANALOG_PLL_LOCK;
462 s->analog[CCM_ANALOG_PLL_VIDEO] |= CCM_ANALOG_PLL_LOCK;
463 s->analog[CCM_ANALOG_PLL_MLB] |= CCM_ANALOG_PLL_LOCK;
464 s->analog[CCM_ANALOG_PLL_ENET] |= CCM_ANALOG_PLL_LOCK;
465 }
466
imx6_ccm_read(void * opaque,hwaddr offset,unsigned size)467 static uint64_t imx6_ccm_read(void *opaque, hwaddr offset, unsigned size)
468 {
469 uint32_t value = 0;
470 uint32_t index = offset >> 2;
471 IMX6CCMState *s = (IMX6CCMState *)opaque;
472
473 value = s->ccm[index];
474
475 trace_imx6_ccm_read(imx6_ccm_reg_name(index), value);
476
477 return (uint64_t)value;
478 }
479
imx6_ccm_write(void * opaque,hwaddr offset,uint64_t value,unsigned size)480 static void imx6_ccm_write(void *opaque, hwaddr offset, uint64_t value,
481 unsigned size)
482 {
483 uint32_t index = offset >> 2;
484 IMX6CCMState *s = (IMX6CCMState *)opaque;
485
486 trace_imx6_ccm_write(imx6_ccm_reg_name(index), (uint32_t)value);
487
488 /*
489 * We will do a better implementation later. In particular some bits
490 * cannot be written to.
491 */
492 s->ccm[index] = (uint32_t)value;
493 }
494
imx6_analog_read(void * opaque,hwaddr offset,unsigned size)495 static uint64_t imx6_analog_read(void *opaque, hwaddr offset, unsigned size)
496 {
497 uint32_t value;
498 uint32_t index = offset >> 2;
499 IMX6CCMState *s = (IMX6CCMState *)opaque;
500
501 switch (index) {
502 case CCM_ANALOG_PLL_ARM_SET:
503 case CCM_ANALOG_PLL_USB1_SET:
504 case CCM_ANALOG_PLL_USB2_SET:
505 case CCM_ANALOG_PLL_SYS_SET:
506 case CCM_ANALOG_PLL_AUDIO_SET:
507 case CCM_ANALOG_PLL_VIDEO_SET:
508 case CCM_ANALOG_PLL_MLB_SET:
509 case CCM_ANALOG_PLL_ENET_SET:
510 case CCM_ANALOG_PFD_480_SET:
511 case CCM_ANALOG_PFD_528_SET:
512 case CCM_ANALOG_MISC0_SET:
513 case PMU_MISC1_SET:
514 case CCM_ANALOG_MISC2_SET:
515 case USB_ANALOG_USB1_VBUS_DETECT_SET:
516 case USB_ANALOG_USB1_CHRG_DETECT_SET:
517 case USB_ANALOG_USB1_MISC_SET:
518 case USB_ANALOG_USB2_VBUS_DETECT_SET:
519 case USB_ANALOG_USB2_CHRG_DETECT_SET:
520 case USB_ANALOG_USB2_MISC_SET:
521 /*
522 * All REG_NAME_SET register access are in fact targeting the
523 * the REG_NAME register.
524 */
525 value = s->analog[index - 1];
526 break;
527 case CCM_ANALOG_PLL_ARM_CLR:
528 case CCM_ANALOG_PLL_USB1_CLR:
529 case CCM_ANALOG_PLL_USB2_CLR:
530 case CCM_ANALOG_PLL_SYS_CLR:
531 case CCM_ANALOG_PLL_AUDIO_CLR:
532 case CCM_ANALOG_PLL_VIDEO_CLR:
533 case CCM_ANALOG_PLL_MLB_CLR:
534 case CCM_ANALOG_PLL_ENET_CLR:
535 case CCM_ANALOG_PFD_480_CLR:
536 case CCM_ANALOG_PFD_528_CLR:
537 case CCM_ANALOG_MISC0_CLR:
538 case PMU_MISC1_CLR:
539 case CCM_ANALOG_MISC2_CLR:
540 case USB_ANALOG_USB1_VBUS_DETECT_CLR:
541 case USB_ANALOG_USB1_CHRG_DETECT_CLR:
542 case USB_ANALOG_USB1_MISC_CLR:
543 case USB_ANALOG_USB2_VBUS_DETECT_CLR:
544 case USB_ANALOG_USB2_CHRG_DETECT_CLR:
545 case USB_ANALOG_USB2_MISC_CLR:
546 /*
547 * All REG_NAME_CLR register access are in fact targeting the
548 * the REG_NAME register.
549 */
550 value = s->analog[index - 2];
551 break;
552 case CCM_ANALOG_PLL_ARM_TOG:
553 case CCM_ANALOG_PLL_USB1_TOG:
554 case CCM_ANALOG_PLL_USB2_TOG:
555 case CCM_ANALOG_PLL_SYS_TOG:
556 case CCM_ANALOG_PLL_AUDIO_TOG:
557 case CCM_ANALOG_PLL_VIDEO_TOG:
558 case CCM_ANALOG_PLL_MLB_TOG:
559 case CCM_ANALOG_PLL_ENET_TOG:
560 case CCM_ANALOG_PFD_480_TOG:
561 case CCM_ANALOG_PFD_528_TOG:
562 case CCM_ANALOG_MISC0_TOG:
563 case PMU_MISC1_TOG:
564 case CCM_ANALOG_MISC2_TOG:
565 case USB_ANALOG_USB1_VBUS_DETECT_TOG:
566 case USB_ANALOG_USB1_CHRG_DETECT_TOG:
567 case USB_ANALOG_USB1_MISC_TOG:
568 case USB_ANALOG_USB2_VBUS_DETECT_TOG:
569 case USB_ANALOG_USB2_CHRG_DETECT_TOG:
570 case USB_ANALOG_USB2_MISC_TOG:
571 /*
572 * All REG_NAME_TOG register access are in fact targeting the
573 * the REG_NAME register.
574 */
575 value = s->analog[index - 3];
576 break;
577 default:
578 value = s->analog[index];
579 break;
580 }
581
582 trace_imx6_analog_read(imx6_analog_reg_name(index), value);
583
584 return (uint64_t)value;
585 }
586
imx6_analog_write(void * opaque,hwaddr offset,uint64_t value,unsigned size)587 static void imx6_analog_write(void *opaque, hwaddr offset, uint64_t value,
588 unsigned size)
589 {
590 uint32_t index = offset >> 2;
591 IMX6CCMState *s = (IMX6CCMState *)opaque;
592
593 trace_imx6_analog_write(imx6_analog_reg_name(index), (uint32_t)value);
594
595 switch (index) {
596 case CCM_ANALOG_PLL_ARM_SET:
597 case CCM_ANALOG_PLL_USB1_SET:
598 case CCM_ANALOG_PLL_USB2_SET:
599 case CCM_ANALOG_PLL_SYS_SET:
600 case CCM_ANALOG_PLL_AUDIO_SET:
601 case CCM_ANALOG_PLL_VIDEO_SET:
602 case CCM_ANALOG_PLL_MLB_SET:
603 case CCM_ANALOG_PLL_ENET_SET:
604 case CCM_ANALOG_PFD_480_SET:
605 case CCM_ANALOG_PFD_528_SET:
606 case CCM_ANALOG_MISC0_SET:
607 case PMU_MISC1_SET:
608 case CCM_ANALOG_MISC2_SET:
609 case USB_ANALOG_USB1_VBUS_DETECT_SET:
610 case USB_ANALOG_USB1_CHRG_DETECT_SET:
611 case USB_ANALOG_USB1_MISC_SET:
612 case USB_ANALOG_USB2_VBUS_DETECT_SET:
613 case USB_ANALOG_USB2_CHRG_DETECT_SET:
614 case USB_ANALOG_USB2_MISC_SET:
615 /*
616 * All REG_NAME_SET register access are in fact targeting the
617 * the REG_NAME register. So we change the value of the
618 * REG_NAME register, setting bits passed in the value.
619 */
620 s->analog[index - 1] |= value;
621 break;
622 case CCM_ANALOG_PLL_ARM_CLR:
623 case CCM_ANALOG_PLL_USB1_CLR:
624 case CCM_ANALOG_PLL_USB2_CLR:
625 case CCM_ANALOG_PLL_SYS_CLR:
626 case CCM_ANALOG_PLL_AUDIO_CLR:
627 case CCM_ANALOG_PLL_VIDEO_CLR:
628 case CCM_ANALOG_PLL_MLB_CLR:
629 case CCM_ANALOG_PLL_ENET_CLR:
630 case CCM_ANALOG_PFD_480_CLR:
631 case CCM_ANALOG_PFD_528_CLR:
632 case CCM_ANALOG_MISC0_CLR:
633 case PMU_MISC1_CLR:
634 case CCM_ANALOG_MISC2_CLR:
635 case USB_ANALOG_USB1_VBUS_DETECT_CLR:
636 case USB_ANALOG_USB1_CHRG_DETECT_CLR:
637 case USB_ANALOG_USB1_MISC_CLR:
638 case USB_ANALOG_USB2_VBUS_DETECT_CLR:
639 case USB_ANALOG_USB2_CHRG_DETECT_CLR:
640 case USB_ANALOG_USB2_MISC_CLR:
641 /*
642 * All REG_NAME_CLR register access are in fact targeting the
643 * the REG_NAME register. So we change the value of the
644 * REG_NAME register, unsetting bits passed in the value.
645 */
646 s->analog[index - 2] &= ~value;
647 break;
648 case CCM_ANALOG_PLL_ARM_TOG:
649 case CCM_ANALOG_PLL_USB1_TOG:
650 case CCM_ANALOG_PLL_USB2_TOG:
651 case CCM_ANALOG_PLL_SYS_TOG:
652 case CCM_ANALOG_PLL_AUDIO_TOG:
653 case CCM_ANALOG_PLL_VIDEO_TOG:
654 case CCM_ANALOG_PLL_MLB_TOG:
655 case CCM_ANALOG_PLL_ENET_TOG:
656 case CCM_ANALOG_PFD_480_TOG:
657 case CCM_ANALOG_PFD_528_TOG:
658 case CCM_ANALOG_MISC0_TOG:
659 case PMU_MISC1_TOG:
660 case CCM_ANALOG_MISC2_TOG:
661 case USB_ANALOG_USB1_VBUS_DETECT_TOG:
662 case USB_ANALOG_USB1_CHRG_DETECT_TOG:
663 case USB_ANALOG_USB1_MISC_TOG:
664 case USB_ANALOG_USB2_VBUS_DETECT_TOG:
665 case USB_ANALOG_USB2_CHRG_DETECT_TOG:
666 case USB_ANALOG_USB2_MISC_TOG:
667 /*
668 * All REG_NAME_TOG register access are in fact targeting the
669 * the REG_NAME register. So we change the value of the
670 * REG_NAME register, toggling bits passed in the value.
671 */
672 s->analog[index - 3] ^= value;
673 break;
674 default:
675 /*
676 * We will do a better implementation later. In particular some bits
677 * cannot be written to.
678 */
679 s->analog[index] = value;
680 break;
681 }
682 }
683
684 static const struct MemoryRegionOps imx6_ccm_ops = {
685 .read = imx6_ccm_read,
686 .write = imx6_ccm_write,
687 .endianness = DEVICE_NATIVE_ENDIAN,
688 .valid = {
689 /*
690 * Our device would not work correctly if the guest was doing
691 * unaligned access. This might not be a limitation on the real
692 * device but in practice there is no reason for a guest to access
693 * this device unaligned.
694 */
695 .min_access_size = 4,
696 .max_access_size = 4,
697 .unaligned = false,
698 },
699 };
700
701 static const struct MemoryRegionOps imx6_analog_ops = {
702 .read = imx6_analog_read,
703 .write = imx6_analog_write,
704 .endianness = DEVICE_NATIVE_ENDIAN,
705 .valid = {
706 /*
707 * Our device would not work correctly if the guest was doing
708 * unaligned access. This might not be a limitation on the real
709 * device but in practice there is no reason for a guest to access
710 * this device unaligned.
711 */
712 .min_access_size = 4,
713 .max_access_size = 4,
714 .unaligned = false,
715 },
716 };
717
imx6_ccm_init(Object * obj)718 static void imx6_ccm_init(Object *obj)
719 {
720 DeviceState *dev = DEVICE(obj);
721 SysBusDevice *sd = SYS_BUS_DEVICE(obj);
722 IMX6CCMState *s = IMX6_CCM(obj);
723
724 /* initialize a container for the all memory range */
725 memory_region_init(&s->container, OBJECT(dev), TYPE_IMX6_CCM, 0x5000);
726
727 /* We initialize an IO memory region for the CCM part */
728 memory_region_init_io(&s->ioccm, OBJECT(dev), &imx6_ccm_ops, s,
729 TYPE_IMX6_CCM ".ccm", CCM_MAX * sizeof(uint32_t));
730
731 /* Add the CCM as a subregion at offset 0 */
732 memory_region_add_subregion(&s->container, 0, &s->ioccm);
733
734 /* We initialize an IO memory region for the ANALOG part */
735 memory_region_init_io(&s->ioanalog, OBJECT(dev), &imx6_analog_ops, s,
736 TYPE_IMX6_CCM ".analog",
737 CCM_ANALOG_MAX * sizeof(uint32_t));
738
739 /* Add the ANALOG as a subregion at offset 0x4000 */
740 memory_region_add_subregion(&s->container, 0x4000, &s->ioanalog);
741
742 sysbus_init_mmio(sd, &s->container);
743 }
744
imx6_ccm_class_init(ObjectClass * klass,void * data)745 static void imx6_ccm_class_init(ObjectClass *klass, void *data)
746 {
747 DeviceClass *dc = DEVICE_CLASS(klass);
748 IMXCCMClass *ccm = IMX_CCM_CLASS(klass);
749
750 dc->reset = imx6_ccm_reset;
751 dc->vmsd = &vmstate_imx6_ccm;
752 dc->desc = "i.MX6 Clock Control Module";
753
754 ccm->get_clock_frequency = imx6_ccm_get_clock_frequency;
755 }
756
757 static const TypeInfo imx6_ccm_info = {
758 .name = TYPE_IMX6_CCM,
759 .parent = TYPE_IMX_CCM,
760 .instance_size = sizeof(IMX6CCMState),
761 .instance_init = imx6_ccm_init,
762 .class_init = imx6_ccm_class_init,
763 };
764
imx6_ccm_register_types(void)765 static void imx6_ccm_register_types(void)
766 {
767 type_register_static(&imx6_ccm_info);
768 }
769
770 type_init(imx6_ccm_register_types)
771