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 "qemu/log.h"
  16
  17 #ifndef DEBUG_IMX6_CCM
  18 #define DEBUG_IMX6_CCM 0
  19 #endif
  20
  21 #define DPRINTF(fmt, args...) \
  22     do { \
  23         if (DEBUG_IMX6_CCM) { \
  24             fprintf(stderr, "[%s]%s: " fmt , TYPE_IMX6_CCM, \
  25                                              __func__, ##args); \
  26         } \
  27     } while (0)
  28
  29 static const char *imx6_ccm_reg_name(uint32_t reg)
  30 {
  31     static char unknown[20];
  32
  33     switch (reg) {
  34     case CCM_CCR:
  35         return "CCR";
  36     case CCM_CCDR:
  37         return "CCDR";
  38     case CCM_CSR:
  39         return "CSR";
  40     case CCM_CCSR:
  41         return "CCSR";
  42     case CCM_CACRR:
  43         return "CACRR";
  44     case CCM_CBCDR:
  45         return "CBCDR";
  46     case CCM_CBCMR:
  47         return "CBCMR";
  48     case CCM_CSCMR1:
  49         return "CSCMR1";
  50     case CCM_CSCMR2:
  51         return "CSCMR2";
  52     case CCM_CSCDR1:
  53         return "CSCDR1";
  54     case CCM_CS1CDR:
  55         return "CS1CDR";
  56     case CCM_CS2CDR:
  57         return "CS2CDR";
  58     case CCM_CDCDR:
  59         return "CDCDR";
  60     case CCM_CHSCCDR:
  61         return "CHSCCDR";
  62     case CCM_CSCDR2:
  63         return "CSCDR2";
  64     case CCM_CSCDR3:
  65         return "CSCDR3";
  66     case CCM_CDHIPR:
  67         return "CDHIPR";
  68     case CCM_CTOR:
  69         return "CTOR";
  70     case CCM_CLPCR:
  71         return "CLPCR";
  72     case CCM_CISR:
  73         return "CISR";
  74     case CCM_CIMR:
  75         return "CIMR";
  76     case CCM_CCOSR:
  77         return "CCOSR";
  78     case CCM_CGPR:
  79         return "CGPR";
  80     case CCM_CCGR0:
  81         return "CCGR0";
  82     case CCM_CCGR1:
  83         return "CCGR1";
  84     case CCM_CCGR2:
  85         return "CCGR2";
  86     case CCM_CCGR3:
  87         return "CCGR3";
  88     case CCM_CCGR4:
  89         return "CCGR4";
  90     case CCM_CCGR5:
  91         return "CCGR5";
  92     case CCM_CCGR6:
  93         return "CCGR6";
  94     case CCM_CMEOR:
  95         return "CMEOR";
  96     default:
  97         sprintf(unknown, "%d ?", reg);
  98         return unknown;
  99     }
 100 }
 101
 102 static const char *imx6_analog_reg_name(uint32_t reg)
 103 {
 104     static char unknown[20];
 105
 106     switch (reg) {
 107     case CCM_ANALOG_PLL_ARM:
 108         return "PLL_ARM";
 109     case CCM_ANALOG_PLL_ARM_SET:
 110         return "PLL_ARM_SET";
 111     case CCM_ANALOG_PLL_ARM_CLR:
 112         return "PLL_ARM_CLR";
 113     case CCM_ANALOG_PLL_ARM_TOG:
 114         return "PLL_ARM_TOG";
 115     case CCM_ANALOG_PLL_USB1:
 116         return "PLL_USB1";
 117     case CCM_ANALOG_PLL_USB1_SET:
 118         return "PLL_USB1_SET";
 119     case CCM_ANALOG_PLL_USB1_CLR:
 120         return "PLL_USB1_CLR";
 121     case CCM_ANALOG_PLL_USB1_TOG:
 122         return "PLL_USB1_TOG";
 123     case CCM_ANALOG_PLL_USB2:
 124         return "PLL_USB2";
 125     case CCM_ANALOG_PLL_USB2_SET:
 126         return "PLL_USB2_SET";
 127     case CCM_ANALOG_PLL_USB2_CLR:
 128         return "PLL_USB2_CLR";
 129     case CCM_ANALOG_PLL_USB2_TOG:
 130         return "PLL_USB2_TOG";
 131     case CCM_ANALOG_PLL_SYS:
 132         return "PLL_SYS";
 133     case CCM_ANALOG_PLL_SYS_SET:
 134         return "PLL_SYS_SET";
 135     case CCM_ANALOG_PLL_SYS_CLR:
 136         return "PLL_SYS_CLR";
 137     case CCM_ANALOG_PLL_SYS_TOG:
 138         return "PLL_SYS_TOG";
 139     case CCM_ANALOG_PLL_SYS_SS:
 140         return "PLL_SYS_SS";
 141     case CCM_ANALOG_PLL_SYS_NUM:
 142         return "PLL_SYS_NUM";
 143     case CCM_ANALOG_PLL_SYS_DENOM:
 144         return "PLL_SYS_DENOM";
 145     case CCM_ANALOG_PLL_AUDIO:
 146         return "PLL_AUDIO";
 147     case CCM_ANALOG_PLL_AUDIO_SET:
 148         return "PLL_AUDIO_SET";
 149     case CCM_ANALOG_PLL_AUDIO_CLR:
 150         return "PLL_AUDIO_CLR";
 151     case CCM_ANALOG_PLL_AUDIO_TOG:
 152         return "PLL_AUDIO_TOG";
 153     case CCM_ANALOG_PLL_AUDIO_NUM:
 154         return "PLL_AUDIO_NUM";
 155     case CCM_ANALOG_PLL_AUDIO_DENOM:
 156         return "PLL_AUDIO_DENOM";
 157     case CCM_ANALOG_PLL_VIDEO:
 158         return "PLL_VIDEO";
 159     case CCM_ANALOG_PLL_VIDEO_SET:
 160         return "PLL_VIDEO_SET";
 161     case CCM_ANALOG_PLL_VIDEO_CLR:
 162         return "PLL_VIDEO_CLR";
 163     case CCM_ANALOG_PLL_VIDEO_TOG:
 164         return "PLL_VIDEO_TOG";
 165     case CCM_ANALOG_PLL_VIDEO_NUM:
 166         return "PLL_VIDEO_NUM";
 167     case CCM_ANALOG_PLL_VIDEO_DENOM:
 168         return "PLL_VIDEO_DENOM";
 169     case CCM_ANALOG_PLL_MLB:
 170         return "PLL_MLB";
 171     case CCM_ANALOG_PLL_MLB_SET:
 172         return "PLL_MLB_SET";
 173     case CCM_ANALOG_PLL_MLB_CLR:
 174         return "PLL_MLB_CLR";
 175     case CCM_ANALOG_PLL_MLB_TOG:
 176         return "PLL_MLB_TOG";
 177     case CCM_ANALOG_PLL_ENET:
 178         return "PLL_ENET";
 179     case CCM_ANALOG_PLL_ENET_SET:
 180         return "PLL_ENET_SET";
 181     case CCM_ANALOG_PLL_ENET_CLR:
 182         return "PLL_ENET_CLR";
 183     case CCM_ANALOG_PLL_ENET_TOG:
 184         return "PLL_ENET_TOG";
 185     case CCM_ANALOG_PFD_480:
 186         return "PFD_480";
 187     case CCM_ANALOG_PFD_480_SET:
 188         return "PFD_480_SET";
 189     case CCM_ANALOG_PFD_480_CLR:
 190         return "PFD_480_CLR";
 191     case CCM_ANALOG_PFD_480_TOG:
 192         return "PFD_480_TOG";
 193     case CCM_ANALOG_PFD_528:
 194         return "PFD_528";
 195     case CCM_ANALOG_PFD_528_SET:
 196         return "PFD_528_SET";
 197     case CCM_ANALOG_PFD_528_CLR:
 198         return "PFD_528_CLR";
 199     case CCM_ANALOG_PFD_528_TOG:
 200         return "PFD_528_TOG";
 201     case CCM_ANALOG_MISC0:
 202         return "MISC0";
 203     case CCM_ANALOG_MISC0_SET:
 204         return "MISC0_SET";
 205     case CCM_ANALOG_MISC0_CLR:
 206         return "MISC0_CLR";
 207     case CCM_ANALOG_MISC0_TOG:
 208         return "MISC0_TOG";
 209     case CCM_ANALOG_MISC2:
 210         return "MISC2";
 211     case CCM_ANALOG_MISC2_SET:
 212         return "MISC2_SET";
 213     case CCM_ANALOG_MISC2_CLR:
 214         return "MISC2_CLR";
 215     case CCM_ANALOG_MISC2_TOG:
 216         return "MISC2_TOG";
 217     case PMU_REG_1P1:
 218         return "PMU_REG_1P1";
 219     case PMU_REG_3P0:
 220         return "PMU_REG_3P0";
 221     case PMU_REG_2P5:
 222         return "PMU_REG_2P5";
 223     case PMU_REG_CORE:
 224         return "PMU_REG_CORE";
 225     case PMU_MISC1:
 226         return "PMU_MISC1";
 227     case PMU_MISC1_SET:
 228         return "PMU_MISC1_SET";
 229     case PMU_MISC1_CLR:
 230         return "PMU_MISC1_CLR";
 231     case PMU_MISC1_TOG:
 232         return "PMU_MISC1_TOG";
 233     case USB_ANALOG_DIGPROG:
 234         return "USB_ANALOG_DIGPROG";
 235     default:
 236         sprintf(unknown, "%d ?", reg);
 237         return unknown;
 238     }
 239 }
 240
 241 #define CKIH_FREQ 24000000 /* 24MHz crystal input */
 242
 243 static const VMStateDescription vmstate_imx6_ccm = {
 244     .name = TYPE_IMX6_CCM,
 245     .version_id = 1,
 246     .minimum_version_id = 1,
 247     .fields = (VMStateField[]) {
 248         VMSTATE_UINT32_ARRAY(ccm, IMX6CCMState, CCM_MAX),
 249         VMSTATE_UINT32_ARRAY(analog, IMX6CCMState, CCM_ANALOG_MAX),
 250         VMSTATE_END_OF_LIST()
 251     },
 252 };
 253
 254 static uint64_t imx6_analog_get_pll2_clk(IMX6CCMState *dev)
 255 {
 256     uint64_t freq = 24000000;
 257
 258     if (EXTRACT(dev->analog[CCM_ANALOG_PLL_SYS], DIV_SELECT)) {
 259         freq *= 22;
 260     } else {
 261         freq *= 20;
 262     }
 263
 264     DPRINTF("freq = %d\n", (uint32_t)freq);
 265
 266     return freq;
 267 }
 268
 269 static uint64_t imx6_analog_get_pll2_pfd0_clk(IMX6CCMState *dev)
 270 {
 271     uint64_t freq = 0;
 272
 273     freq = imx6_analog_get_pll2_clk(dev) * 18
 274            / EXTRACT(dev->analog[CCM_ANALOG_PFD_528], PFD0_FRAC);
 275
 276     DPRINTF("freq = %d\n", (uint32_t)freq);
 277
 278     return freq;
 279 }
 280
 281 static uint64_t imx6_analog_get_pll2_pfd2_clk(IMX6CCMState *dev)
 282 {
 283     uint64_t freq = 0;
 284
 285     freq = imx6_analog_get_pll2_clk(dev) * 18
 286            / EXTRACT(dev->analog[CCM_ANALOG_PFD_528], PFD2_FRAC);
 287
 288     DPRINTF("freq = %d\n", (uint32_t)freq);
 289
 290     return freq;
 291 }
 292
 293 static uint64_t imx6_analog_get_periph_clk(IMX6CCMState *dev)
 294 {
 295     uint64_t freq = 0;
 296
 297     switch (EXTRACT(dev->ccm[CCM_CBCMR], PRE_PERIPH_CLK_SEL)) {
 298     case 0:
 299         freq = imx6_analog_get_pll2_clk(dev);
 300         break;
 301     case 1:
 302         freq = imx6_analog_get_pll2_pfd2_clk(dev);
 303         break;
 304     case 2:
 305         freq = imx6_analog_get_pll2_pfd0_clk(dev);
 306         break;
 307     case 3:
 308         freq = imx6_analog_get_pll2_pfd2_clk(dev) / 2;
 309         break;
 310     default:
 311         /* We should never get there */
 312         g_assert_not_reached();
 313         break;
 314     }
 315
 316     DPRINTF("freq = %d\n", (uint32_t)freq);
 317
 318     return freq;
 319 }
 320
 321 static uint64_t imx6_ccm_get_ahb_clk(IMX6CCMState *dev)
 322 {
 323     uint64_t freq = 0;
 324
 325     freq = imx6_analog_get_periph_clk(dev)
 326            / (1 + EXTRACT(dev->ccm[CCM_CBCDR], AHB_PODF));
 327
 328     DPRINTF("freq = %d\n", (uint32_t)freq);
 329
 330     return freq;
 331 }
 332
 333 static uint64_t imx6_ccm_get_ipg_clk(IMX6CCMState *dev)
 334 {
 335     uint64_t freq = 0;
 336
 337     freq = imx6_ccm_get_ahb_clk(dev)
 338            / (1 + EXTRACT(dev->ccm[CCM_CBCDR], IPG_PODF));;
 339
 340     DPRINTF("freq = %d\n", (uint32_t)freq);
 341
 342     return freq;
 343 }
 344
 345 static uint64_t imx6_ccm_get_per_clk(IMX6CCMState *dev)
 346 {
 347     uint64_t freq = 0;
 348
 349     freq = imx6_ccm_get_ipg_clk(dev)
 350            / (1 + EXTRACT(dev->ccm[CCM_CSCMR1], PERCLK_PODF));
 351
 352     DPRINTF("freq = %d\n", (uint32_t)freq);
 353
 354     return freq;
 355 }
 356
 357 static uint32_t imx6_ccm_get_clock_frequency(IMXCCMState *dev, IMXClk clock)
 358 {
 359     uint32_t freq = 0;
 360     IMX6CCMState *s = IMX6_CCM(dev);
 361
 362     switch (clock) {
 363     case CLK_NONE:
 364         break;
 365     case CLK_IPG:
 366         freq = imx6_ccm_get_ipg_clk(s);
 367         break;
 368     case CLK_IPG_HIGH:
 369         freq = imx6_ccm_get_per_clk(s);
 370         break;
 371     case CLK_32k:
 372         freq = CKIL_FREQ;
 373         break;
 374     case CLK_HIGH:
 375         freq = 24000000;
 376         break;
 377     case CLK_HIGH_DIV:
 378         freq = 24000000 / 8;
 379         break;
 380     default:
 381         qemu_log_mask(LOG_GUEST_ERROR, "[%s]%s: unsupported clock %d\n",
 382                       TYPE_IMX6_CCM, __func__, clock);
 383         break;
 384     }
 385
 386     DPRINTF("Clock = %d) = %d\n", clock, freq);
 387
 388     return freq;
 389 }
 390
 391 static void imx6_ccm_reset(DeviceState *dev)
 392 {
 393     IMX6CCMState *s = IMX6_CCM(dev);
 394
 395     DPRINTF("\n");
 396
 397     s->ccm[CCM_CCR] = 0x040116FF;
 398     s->ccm[CCM_CCDR] = 0x00000000;
 399     s->ccm[CCM_CSR] = 0x00000010;
 400     s->ccm[CCM_CCSR] = 0x00000100;
 401     s->ccm[CCM_CACRR] = 0x00000000;
 402     s->ccm[CCM_CBCDR] = 0x00018D40;
 403     s->ccm[CCM_CBCMR] = 0x00022324;
 404     s->ccm[CCM_CSCMR1] = 0x00F00000;
 405     s->ccm[CCM_CSCMR2] = 0x02B92F06;
 406     s->ccm[CCM_CSCDR1] = 0x00490B00;
 407     s->ccm[CCM_CS1CDR] = 0x0EC102C1;
 408     s->ccm[CCM_CS2CDR] = 0x000736C1;
 409     s->ccm[CCM_CDCDR] = 0x33F71F92;
 410     s->ccm[CCM_CHSCCDR] = 0x0002A150;
 411     s->ccm[CCM_CSCDR2] = 0x0002A150;
 412     s->ccm[CCM_CSCDR3] = 0x00014841;
 413     s->ccm[CCM_CDHIPR] = 0x00000000;
 414     s->ccm[CCM_CTOR] = 0x00000000;
 415     s->ccm[CCM_CLPCR] = 0x00000079;
 416     s->ccm[CCM_CISR] = 0x00000000;
 417     s->ccm[CCM_CIMR] = 0xFFFFFFFF;
 418     s->ccm[CCM_CCOSR] = 0x000A0001;
 419     s->ccm[CCM_CGPR] = 0x0000FE62;
 420     s->ccm[CCM_CCGR0] = 0xFFFFFFFF;
 421     s->ccm[CCM_CCGR1] = 0xFFFFFFFF;
 422     s->ccm[CCM_CCGR2] = 0xFC3FFFFF;
 423     s->ccm[CCM_CCGR3] = 0xFFFFFFFF;
 424     s->ccm[CCM_CCGR4] = 0xFFFFFFFF;
 425     s->ccm[CCM_CCGR5] = 0xFFFFFFFF;
 426     s->ccm[CCM_CCGR6] = 0xFFFFFFFF;
 427     s->ccm[CCM_CMEOR] = 0xFFFFFFFF;
 428
 429     s->analog[CCM_ANALOG_PLL_ARM] = 0x00013042;
 430     s->analog[CCM_ANALOG_PLL_USB1] = 0x00012000;
 431     s->analog[CCM_ANALOG_PLL_USB2] = 0x00012000;
 432     s->analog[CCM_ANALOG_PLL_SYS] = 0x00013001;
 433     s->analog[CCM_ANALOG_PLL_SYS_SS] = 0x00000000;
 434     s->analog[CCM_ANALOG_PLL_SYS_NUM] = 0x00000000;
 435     s->analog[CCM_ANALOG_PLL_SYS_DENOM] = 0x00000012;
 436     s->analog[CCM_ANALOG_PLL_AUDIO] = 0x00011006;
 437     s->analog[CCM_ANALOG_PLL_AUDIO_NUM] = 0x05F5E100;
 438     s->analog[CCM_ANALOG_PLL_AUDIO_DENOM] = 0x2964619C;
 439     s->analog[CCM_ANALOG_PLL_VIDEO] = 0x0001100C;
 440     s->analog[CCM_ANALOG_PLL_VIDEO_NUM] = 0x05F5E100;
 441     s->analog[CCM_ANALOG_PLL_VIDEO_DENOM] = 0x10A24447;
 442     s->analog[CCM_ANALOG_PLL_MLB] = 0x00010000;
 443     s->analog[CCM_ANALOG_PLL_ENET] = 0x00011001;
 444     s->analog[CCM_ANALOG_PFD_480] = 0x1311100C;
 445     s->analog[CCM_ANALOG_PFD_528] = 0x1018101B;
 446
 447     s->analog[PMU_REG_1P1] = 0x00001073;
 448     s->analog[PMU_REG_3P0] = 0x00000F74;
 449     s->analog[PMU_REG_2P5] = 0x00005071;
 450     s->analog[PMU_REG_CORE] = 0x00402010;
 451     s->analog[PMU_MISC0] = 0x04000000;
 452     s->analog[PMU_MISC1] = 0x00000000;
 453     s->analog[PMU_MISC2] = 0x00272727;
 454
 455     s->analog[USB_ANALOG_USB1_VBUS_DETECT] = 0x00000004;
 456     s->analog[USB_ANALOG_USB1_CHRG_DETECT] = 0x00000000;
 457     s->analog[USB_ANALOG_USB1_VBUS_DETECT_STAT] = 0x00000000;
 458     s->analog[USB_ANALOG_USB1_CHRG_DETECT_STAT] = 0x00000000;
 459     s->analog[USB_ANALOG_USB1_MISC] = 0x00000002;
 460     s->analog[USB_ANALOG_USB2_VBUS_DETECT] = 0x00000004;
 461     s->analog[USB_ANALOG_USB2_CHRG_DETECT] = 0x00000000;
 462     s->analog[USB_ANALOG_USB2_MISC] = 0x00000002;
 463     s->analog[USB_ANALOG_DIGPROG] = 0x00000000;
 464
 465     /* all PLLs need to be locked */
 466     s->analog[CCM_ANALOG_PLL_ARM]   |= CCM_ANALOG_PLL_LOCK;
 467     s->analog[CCM_ANALOG_PLL_USB1]  |= CCM_ANALOG_PLL_LOCK;
 468     s->analog[CCM_ANALOG_PLL_USB2]  |= CCM_ANALOG_PLL_LOCK;
 469     s->analog[CCM_ANALOG_PLL_SYS]   |= CCM_ANALOG_PLL_LOCK;
 470     s->analog[CCM_ANALOG_PLL_AUDIO] |= CCM_ANALOG_PLL_LOCK;
 471     s->analog[CCM_ANALOG_PLL_VIDEO] |= CCM_ANALOG_PLL_LOCK;
 472     s->analog[CCM_ANALOG_PLL_MLB]   |= CCM_ANALOG_PLL_LOCK;
 473     s->analog[CCM_ANALOG_PLL_ENET]  |= CCM_ANALOG_PLL_LOCK;
 474 }
 475
 476 static uint64_t imx6_ccm_read(void *opaque, hwaddr offset, unsigned size)
 477 {
 478     uint32_t value = 0;
 479     uint32_t index = offset >> 2;
 480     IMX6CCMState *s = (IMX6CCMState *)opaque;
 481
 482     value = s->ccm[index];
 483
 484     DPRINTF("reg[%s] => 0x%" PRIx32 "\n", imx6_ccm_reg_name(index), value);
 485
 486     return (uint64_t)value;
 487 }
 488
 489 static void imx6_ccm_write(void *opaque, hwaddr offset, uint64_t value,
 490                            unsigned size)
 491 {
 492     uint32_t index = offset >> 2;
 493     IMX6CCMState *s = (IMX6CCMState *)opaque;
 494
 495     DPRINTF("reg[%s] <= 0x%" PRIx32 "\n", imx6_ccm_reg_name(index),
 496             (uint32_t)value);
 497
 498     /*
 499      * We will do a better implementation later. In particular some bits
 500      * cannot be written to.
 501      */
 502     s->ccm[index] = (uint32_t)value;
 503 }
 504
 505 static uint64_t imx6_analog_read(void *opaque, hwaddr offset, unsigned size)
 506 {
 507     uint32_t value;
 508     uint32_t index = offset >> 2;
 509     IMX6CCMState *s = (IMX6CCMState *)opaque;
 510
 511     switch (index) {
 512     case CCM_ANALOG_PLL_ARM_SET:
 513     case CCM_ANALOG_PLL_USB1_SET:
 514     case CCM_ANALOG_PLL_USB2_SET:
 515     case CCM_ANALOG_PLL_SYS_SET:
 516     case CCM_ANALOG_PLL_AUDIO_SET:
 517     case CCM_ANALOG_PLL_VIDEO_SET:
 518     case CCM_ANALOG_PLL_MLB_SET:
 519     case CCM_ANALOG_PLL_ENET_SET:
 520     case CCM_ANALOG_PFD_480_SET:
 521     case CCM_ANALOG_PFD_528_SET:
 522     case CCM_ANALOG_MISC0_SET:
 523     case PMU_MISC1_SET:
 524     case CCM_ANALOG_MISC2_SET:
 525     case USB_ANALOG_USB1_VBUS_DETECT_SET:
 526     case USB_ANALOG_USB1_CHRG_DETECT_SET:
 527     case USB_ANALOG_USB1_MISC_SET:
 528     case USB_ANALOG_USB2_VBUS_DETECT_SET:
 529     case USB_ANALOG_USB2_CHRG_DETECT_SET:
 530     case USB_ANALOG_USB2_MISC_SET:
 531         /*
 532          * All REG_NAME_SET register access are in fact targeting the
 533          * the REG_NAME register.
 534          */
 535         value = s->analog[index - 1];
 536         break;
 537     case CCM_ANALOG_PLL_ARM_CLR:
 538     case CCM_ANALOG_PLL_USB1_CLR:
 539     case CCM_ANALOG_PLL_USB2_CLR:
 540     case CCM_ANALOG_PLL_SYS_CLR:
 541     case CCM_ANALOG_PLL_AUDIO_CLR:
 542     case CCM_ANALOG_PLL_VIDEO_CLR:
 543     case CCM_ANALOG_PLL_MLB_CLR:
 544     case CCM_ANALOG_PLL_ENET_CLR:
 545     case CCM_ANALOG_PFD_480_CLR:
 546     case CCM_ANALOG_PFD_528_CLR:
 547     case CCM_ANALOG_MISC0_CLR:
 548     case PMU_MISC1_CLR:
 549     case CCM_ANALOG_MISC2_CLR:
 550     case USB_ANALOG_USB1_VBUS_DETECT_CLR:
 551     case USB_ANALOG_USB1_CHRG_DETECT_CLR:
 552     case USB_ANALOG_USB1_MISC_CLR:
 553     case USB_ANALOG_USB2_VBUS_DETECT_CLR:
 554     case USB_ANALOG_USB2_CHRG_DETECT_CLR:
 555     case USB_ANALOG_USB2_MISC_CLR:
 556         /*
 557          * All REG_NAME_CLR register access are in fact targeting the
 558          * the REG_NAME register.
 559          */
 560         value = s->analog[index - 2];
 561         break;
 562     case CCM_ANALOG_PLL_ARM_TOG:
 563     case CCM_ANALOG_PLL_USB1_TOG:
 564     case CCM_ANALOG_PLL_USB2_TOG:
 565     case CCM_ANALOG_PLL_SYS_TOG:
 566     case CCM_ANALOG_PLL_AUDIO_TOG:
 567     case CCM_ANALOG_PLL_VIDEO_TOG:
 568     case CCM_ANALOG_PLL_MLB_TOG:
 569     case CCM_ANALOG_PLL_ENET_TOG:
 570     case CCM_ANALOG_PFD_480_TOG:
 571     case CCM_ANALOG_PFD_528_TOG:
 572     case CCM_ANALOG_MISC0_TOG:
 573     case PMU_MISC1_TOG:
 574     case CCM_ANALOG_MISC2_TOG:
 575     case USB_ANALOG_USB1_VBUS_DETECT_TOG:
 576     case USB_ANALOG_USB1_CHRG_DETECT_TOG:
 577     case USB_ANALOG_USB1_MISC_TOG:
 578     case USB_ANALOG_USB2_VBUS_DETECT_TOG:
 579     case USB_ANALOG_USB2_CHRG_DETECT_TOG:
 580     case USB_ANALOG_USB2_MISC_TOG:
 581         /*
 582          * All REG_NAME_TOG register access are in fact targeting the
 583          * the REG_NAME register.
 584          */
 585         value = s->analog[index - 3];
 586         break;
 587     default:
 588         value = s->analog[index];
 589         break;
 590     }
 591
 592     DPRINTF("reg[%s] => 0x%" PRIx32 "\n", imx6_analog_reg_name(index), value);
 593
 594     return (uint64_t)value;
 595 }
 596
 597 static void imx6_analog_write(void *opaque, hwaddr offset, uint64_t value,
 598                               unsigned size)
 599 {
 600     uint32_t index = offset >> 2;
 601     IMX6CCMState *s = (IMX6CCMState *)opaque;
 602
 603     DPRINTF("reg[%s] <= 0x%" PRIx32 "\n", imx6_analog_reg_name(index),
 604             (uint32_t)value);
 605
 606     switch (index) {
 607     case CCM_ANALOG_PLL_ARM_SET:
 608     case CCM_ANALOG_PLL_USB1_SET:
 609     case CCM_ANALOG_PLL_USB2_SET:
 610     case CCM_ANALOG_PLL_SYS_SET:
 611     case CCM_ANALOG_PLL_AUDIO_SET:
 612     case CCM_ANALOG_PLL_VIDEO_SET:
 613     case CCM_ANALOG_PLL_MLB_SET:
 614     case CCM_ANALOG_PLL_ENET_SET:
 615     case CCM_ANALOG_PFD_480_SET:
 616     case CCM_ANALOG_PFD_528_SET:
 617     case CCM_ANALOG_MISC0_SET:
 618     case PMU_MISC1_SET:
 619     case CCM_ANALOG_MISC2_SET:
 620     case USB_ANALOG_USB1_VBUS_DETECT_SET:
 621     case USB_ANALOG_USB1_CHRG_DETECT_SET:
 622     case USB_ANALOG_USB1_MISC_SET:
 623     case USB_ANALOG_USB2_VBUS_DETECT_SET:
 624     case USB_ANALOG_USB2_CHRG_DETECT_SET:
 625     case USB_ANALOG_USB2_MISC_SET:
 626         /*
 627          * All REG_NAME_SET register access are in fact targeting the
 628          * the REG_NAME register. So we change the value of the
 629          * REG_NAME register, setting bits passed in the value.
 630          */
 631         s->analog[index - 1] |= value;
 632         break;
 633     case CCM_ANALOG_PLL_ARM_CLR:
 634     case CCM_ANALOG_PLL_USB1_CLR:
 635     case CCM_ANALOG_PLL_USB2_CLR:
 636     case CCM_ANALOG_PLL_SYS_CLR:
 637     case CCM_ANALOG_PLL_AUDIO_CLR:
 638     case CCM_ANALOG_PLL_VIDEO_CLR:
 639     case CCM_ANALOG_PLL_MLB_CLR:
 640     case CCM_ANALOG_PLL_ENET_CLR:
 641     case CCM_ANALOG_PFD_480_CLR:
 642     case CCM_ANALOG_PFD_528_CLR:
 643     case CCM_ANALOG_MISC0_CLR:
 644     case PMU_MISC1_CLR:
 645     case CCM_ANALOG_MISC2_CLR:
 646     case USB_ANALOG_USB1_VBUS_DETECT_CLR:
 647     case USB_ANALOG_USB1_CHRG_DETECT_CLR:
 648     case USB_ANALOG_USB1_MISC_CLR:
 649     case USB_ANALOG_USB2_VBUS_DETECT_CLR:
 650     case USB_ANALOG_USB2_CHRG_DETECT_CLR:
 651     case USB_ANALOG_USB2_MISC_CLR:
 652         /*
 653          * All REG_NAME_CLR register access are in fact targeting the
 654          * the REG_NAME register. So we change the value of the
 655          * REG_NAME register, unsetting bits passed in the value.
 656          */
 657         s->analog[index - 2] &= ~value;
 658         break;
 659     case CCM_ANALOG_PLL_ARM_TOG:
 660     case CCM_ANALOG_PLL_USB1_TOG:
 661     case CCM_ANALOG_PLL_USB2_TOG:
 662     case CCM_ANALOG_PLL_SYS_TOG:
 663     case CCM_ANALOG_PLL_AUDIO_TOG:
 664     case CCM_ANALOG_PLL_VIDEO_TOG:
 665     case CCM_ANALOG_PLL_MLB_TOG:
 666     case CCM_ANALOG_PLL_ENET_TOG:
 667     case CCM_ANALOG_PFD_480_TOG:
 668     case CCM_ANALOG_PFD_528_TOG:
 669     case CCM_ANALOG_MISC0_TOG:
 670     case PMU_MISC1_TOG:
 671     case CCM_ANALOG_MISC2_TOG:
 672     case USB_ANALOG_USB1_VBUS_DETECT_TOG:
 673     case USB_ANALOG_USB1_CHRG_DETECT_TOG:
 674     case USB_ANALOG_USB1_MISC_TOG:
 675     case USB_ANALOG_USB2_VBUS_DETECT_TOG:
 676     case USB_ANALOG_USB2_CHRG_DETECT_TOG:
 677     case USB_ANALOG_USB2_MISC_TOG:
 678         /*
 679          * All REG_NAME_TOG register access are in fact targeting the
 680          * the REG_NAME register. So we change the value of the
 681          * REG_NAME register, toggling bits passed in the value.
 682          */
 683         s->analog[index - 3] ^= value;
 684         break;
 685     default:
 686         /*
 687          * We will do a better implementation later. In particular some bits
 688          * cannot be written to.
 689          */
 690         s->analog[index] = value;
 691         break;
 692     }
 693 }
 694
 695 static const struct MemoryRegionOps imx6_ccm_ops = {
 696     .read = imx6_ccm_read,
 697     .write = imx6_ccm_write,
 698     .endianness = DEVICE_NATIVE_ENDIAN,
 699     .valid = {
 700         /*
 701          * Our device would not work correctly if the guest was doing
 702          * unaligned access. This might not be a limitation on the real
 703          * device but in practice there is no reason for a guest to access
 704          * this device unaligned.
 705          */
 706         .min_access_size = 4,
 707         .max_access_size = 4,
 708         .unaligned = false,
 709     },
 710 };
 711
 712 static const struct MemoryRegionOps imx6_analog_ops = {
 713     .read = imx6_analog_read,
 714     .write = imx6_analog_write,
 715     .endianness = DEVICE_NATIVE_ENDIAN,
 716     .valid = {
 717         /*
 718          * Our device would not work correctly if the guest was doing
 719          * unaligned access. This might not be a limitation on the real
 720          * device but in practice there is no reason for a guest to access
 721          * this device unaligned.
 722          */
 723         .min_access_size = 4,
 724         .max_access_size = 4,
 725         .unaligned = false,
 726     },
 727 };
 728
 729 static void imx6_ccm_init(Object *obj)
 730 {
 731     DeviceState *dev = DEVICE(obj);
 732     SysBusDevice *sd = SYS_BUS_DEVICE(obj);
 733     IMX6CCMState *s = IMX6_CCM(obj);
 734
 735     /* initialize a container for the all memory range */
 736     memory_region_init(&s->container, OBJECT(dev), TYPE_IMX6_CCM, 0x5000);
 737
 738     /* We initialize an IO memory region for the CCM part */
 739     memory_region_init_io(&s->ioccm, OBJECT(dev), &imx6_ccm_ops, s,
 740                           TYPE_IMX6_CCM ".ccm", CCM_MAX * sizeof(uint32_t));
 741
 742     /* Add the CCM as a subregion at offset 0 */
 743     memory_region_add_subregion(&s->container, 0, &s->ioccm);
 744
 745     /* We initialize an IO memory region for the ANALOG part */
 746     memory_region_init_io(&s->ioanalog, OBJECT(dev), &imx6_analog_ops, s,
 747                           TYPE_IMX6_CCM ".analog",
 748                           CCM_ANALOG_MAX * sizeof(uint32_t));
 749
 750     /* Add the ANALOG as a subregion at offset 0x4000 */
 751     memory_region_add_subregion(&s->container, 0x4000, &s->ioanalog);
 752
 753     sysbus_init_mmio(sd, &s->container);
 754 }
 755
 756 static void imx6_ccm_class_init(ObjectClass *klass, void *data)
 757 {
 758     DeviceClass *dc = DEVICE_CLASS(klass);
 759     IMXCCMClass *ccm = IMX_CCM_CLASS(klass);
 760
 761     dc->reset = imx6_ccm_reset;
 762     dc->vmsd = &vmstate_imx6_ccm;
 763     dc->desc = "i.MX6 Clock Control Module";
 764
 765     ccm->get_clock_frequency = imx6_ccm_get_clock_frequency;
 766 }
 767
 768 static const TypeInfo imx6_ccm_info = {
 769     .name          = TYPE_IMX6_CCM,
 770     .parent        = TYPE_IMX_CCM,
 771     .instance_size = sizeof(IMX6CCMState),
 772     .instance_init = imx6_ccm_init,
 773     .class_init    = imx6_ccm_class_init,
 774 };
 775
 776 static void imx6_ccm_register_types(void)
 777 {
 778     type_register_static(&imx6_ccm_info);
 779 }
 780
 781 type_init(imx6_ccm_register_types)