hw/misc/imx6_ccm.c

   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
  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         sprintf(unknown, "%u ?", reg);
  89         return unknown;
  90     }
  91 }
  92
  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         sprintf(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
 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
 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
 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
 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
 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
 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
 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
 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
 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
 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
 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
 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
 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
 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
 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
 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)