LXR linux/drivers/bcma/driver_chipcommon

   1/*
   2 * Broadcom specific AMBA
   3 * ChipCommon Power Management Unit driver
   4 *
   5 * Copyright 2009, Michael Buesch <m@bues.ch>
   6 * Copyright 2007, 2011, Broadcom Corporation
   7 * Copyright 2011, 2012, Hauke Mehrtens <hauke@hauke-m.de>
   8 *
   9 * Licensed under the GNU/GPL. See COPYING for details.
  10 */
  11
  12#include "bcma_private.h"
  13#include <linux/export.h>
  14#include <linux/bcma/bcma.h>
  15
  16u32 bcma_chipco_pll_read(struct bcma_drv_cc *cc, u32 offset)
  17{
  18        bcma_pmu_write32(cc, BCMA_CC_PMU_PLLCTL_ADDR, offset);
  19        bcma_pmu_read32(cc, BCMA_CC_PMU_PLLCTL_ADDR);
  20        return bcma_pmu_read32(cc, BCMA_CC_PMU_PLLCTL_DATA);
  21}
  22EXPORT_SYMBOL_GPL(bcma_chipco_pll_read);
  23
  24void bcma_chipco_pll_write(struct bcma_drv_cc *cc, u32 offset, u32 value)
  25{
  26        bcma_pmu_write32(cc, BCMA_CC_PMU_PLLCTL_ADDR, offset);
  27        bcma_pmu_read32(cc, BCMA_CC_PMU_PLLCTL_ADDR);
  28        bcma_pmu_write32(cc, BCMA_CC_PMU_PLLCTL_DATA, value);
  29}
  30EXPORT_SYMBOL_GPL(bcma_chipco_pll_write);
  31
  32void bcma_chipco_pll_maskset(struct bcma_drv_cc *cc, u32 offset, u32 mask,
  33                             u32 set)
  34{
  35        bcma_pmu_write32(cc, BCMA_CC_PMU_PLLCTL_ADDR, offset);
  36        bcma_pmu_read32(cc, BCMA_CC_PMU_PLLCTL_ADDR);
  37        bcma_pmu_maskset32(cc, BCMA_CC_PMU_PLLCTL_DATA, mask, set);
  38}
  39EXPORT_SYMBOL_GPL(bcma_chipco_pll_maskset);
  40
  41void bcma_chipco_chipctl_maskset(struct bcma_drv_cc *cc,
  42                                 u32 offset, u32 mask, u32 set)
  43{
  44        bcma_pmu_write32(cc, BCMA_CC_PMU_CHIPCTL_ADDR, offset);
  45        bcma_pmu_read32(cc, BCMA_CC_PMU_CHIPCTL_ADDR);
  46        bcma_pmu_maskset32(cc, BCMA_CC_PMU_CHIPCTL_DATA, mask, set);
  47}
  48EXPORT_SYMBOL_GPL(bcma_chipco_chipctl_maskset);
  49
  50void bcma_chipco_regctl_maskset(struct bcma_drv_cc *cc, u32 offset, u32 mask,
  51                                u32 set)
  52{
  53        bcma_pmu_write32(cc, BCMA_CC_PMU_REGCTL_ADDR, offset);
  54        bcma_pmu_read32(cc, BCMA_CC_PMU_REGCTL_ADDR);
  55        bcma_pmu_maskset32(cc, BCMA_CC_PMU_REGCTL_DATA, mask, set);
  56}
  57EXPORT_SYMBOL_GPL(bcma_chipco_regctl_maskset);
  58
  59static u32 bcma_pmu_xtalfreq(struct bcma_drv_cc *cc)
  60{
  61        u32 ilp_ctl, alp_hz;
  62
  63        if (!(bcma_pmu_read32(cc, BCMA_CC_PMU_STAT) &
  64              BCMA_CC_PMU_STAT_EXT_LPO_AVAIL))
  65                return 0;
  66
  67        bcma_pmu_write32(cc, BCMA_CC_PMU_XTAL_FREQ,
  68                         BIT(BCMA_CC_PMU_XTAL_FREQ_MEASURE_SHIFT));
  69        usleep_range(1000, 2000);
  70
  71        ilp_ctl = bcma_pmu_read32(cc, BCMA_CC_PMU_XTAL_FREQ);
  72        ilp_ctl &= BCMA_CC_PMU_XTAL_FREQ_ILPCTL_MASK;
  73
  74        bcma_pmu_write32(cc, BCMA_CC_PMU_XTAL_FREQ, 0);
  75
  76        alp_hz = ilp_ctl * 32768 / 4;
  77        return (alp_hz + 50000) / 100000 * 100;
  78}
  79
  80static void bcma_pmu2_pll_init0(struct bcma_drv_cc *cc, u32 xtalfreq)
  81{
  82        struct bcma_bus *bus = cc->core->bus;
  83        u32 freq_tgt_target = 0, freq_tgt_current;
  84        u32 pll0, mask;
  85
  86        switch (bus->chipinfo.id) {
  87        case BCMA_CHIP_ID_BCM43142:
  88                /* pmu2_xtaltab0_adfll_485 */
  89                switch (xtalfreq) {
  90                case 12000:
  91                        freq_tgt_target = 0x50D52;
  92                        break;
  93                case 20000:
  94                        freq_tgt_target = 0x307FE;
  95                        break;
  96                case 26000:
  97                        freq_tgt_target = 0x254EA;
  98                        break;
  99                case 37400:
 100                        freq_tgt_target = 0x19EF8;
 101                        break;
 102                case 52000:
 103                        freq_tgt_target = 0x12A75;
 104                        break;
 105                }
 106                break;
 107        }
 108
 109        if (!freq_tgt_target) {
 110                bcma_err(bus, "Unknown TGT frequency for xtalfreq %d\n",
 111                         xtalfreq);
 112                return;
 113        }
 114
 115        pll0 = bcma_chipco_pll_read(cc, BCMA_CC_PMU15_PLL_PLLCTL0);
 116        freq_tgt_current = (pll0 & BCMA_CC_PMU15_PLL_PC0_FREQTGT_MASK) >>
 117                BCMA_CC_PMU15_PLL_PC0_FREQTGT_SHIFT;
 118
 119        if (freq_tgt_current == freq_tgt_target) {
 120                bcma_debug(bus, "Target TGT frequency already set\n");
 121                return;
 122        }
 123
 124        /* Turn off PLL */
 125        switch (bus->chipinfo.id) {
 126        case BCMA_CHIP_ID_BCM43142:
 127                mask = (u32)~(BCMA_RES_4314_HT_AVAIL |
 128                              BCMA_RES_4314_MACPHY_CLK_AVAIL);
 129
 130                bcma_pmu_mask32(cc, BCMA_CC_PMU_MINRES_MSK, mask);
 131                bcma_pmu_mask32(cc, BCMA_CC_PMU_MAXRES_MSK, mask);
 132                bcma_wait_value(cc->core, BCMA_CLKCTLST,
 133                                BCMA_CLKCTLST_HAVEHT, 0, 20000);
 134                break;
 135        }
 136
 137        pll0 &= ~BCMA_CC_PMU15_PLL_PC0_FREQTGT_MASK;
 138        pll0 |= freq_tgt_target << BCMA_CC_PMU15_PLL_PC0_FREQTGT_SHIFT;
 139        bcma_chipco_pll_write(cc, BCMA_CC_PMU15_PLL_PLLCTL0, pll0);
 140
 141        /* Flush */
 142        if (cc->pmu.rev >= 2)
 143                bcma_pmu_set32(cc, BCMA_CC_PMU_CTL, BCMA_CC_PMU_CTL_PLL_UPD);
 144
 145        /* TODO: Do we need to update OTP? */
 146}
 147
 148static void bcma_pmu_pll_init(struct bcma_drv_cc *cc)
 149{
 150        struct bcma_bus *bus = cc->core->bus;
 151        u32 xtalfreq = bcma_pmu_xtalfreq(cc);
 152
 153        switch (bus->chipinfo.id) {
 154        case BCMA_CHIP_ID_BCM43142:
 155                if (xtalfreq == 0)
 156                        xtalfreq = 20000;
 157                bcma_pmu2_pll_init0(cc, xtalfreq);
 158                break;
 159        }
 160}
 161
 162static void bcma_pmu_resources_init(struct bcma_drv_cc *cc)
 163{
 164        struct bcma_bus *bus = cc->core->bus;
 165        u32 min_msk = 0, max_msk = 0;
 166
 167        switch (bus->chipinfo.id) {
 168        case BCMA_CHIP_ID_BCM4313:
 169                min_msk = 0x200D;
 170                max_msk = 0xFFFF;
 171                break;
 172        case BCMA_CHIP_ID_BCM43142:
 173                min_msk = BCMA_RES_4314_LPLDO_PU |
 174                          BCMA_RES_4314_PMU_SLEEP_DIS |
 175                          BCMA_RES_4314_PMU_BG_PU |
 176                          BCMA_RES_4314_CBUCK_LPOM_PU |
 177                          BCMA_RES_4314_CBUCK_PFM_PU |
 178                          BCMA_RES_4314_CLDO_PU |
 179                          BCMA_RES_4314_LPLDO2_LVM |
 180                          BCMA_RES_4314_WL_PMU_PU |
 181                          BCMA_RES_4314_LDO3P3_PU |
 182                          BCMA_RES_4314_OTP_PU |
 183                          BCMA_RES_4314_WL_PWRSW_PU |
 184                          BCMA_RES_4314_LQ_AVAIL |
 185                          BCMA_RES_4314_LOGIC_RET |
 186                          BCMA_RES_4314_MEM_SLEEP |
 187                          BCMA_RES_4314_MACPHY_RET |
 188                          BCMA_RES_4314_WL_CORE_READY;
 189                max_msk = 0x3FFFFFFF;
 190                break;
 191        default:
 192                bcma_debug(bus, "PMU resource config unknown or not needed for device 0x%04X\n",
 193                           bus->chipinfo.id);
 194        }
 195
 196        /* Set the resource masks. */
 197        if (min_msk)
 198                bcma_pmu_write32(cc, BCMA_CC_PMU_MINRES_MSK, min_msk);
 199        if (max_msk)
 200                bcma_pmu_write32(cc, BCMA_CC_PMU_MAXRES_MSK, max_msk);
 201
 202        /*
 203         * Add some delay; allow resources to come up and settle.
 204         * Delay is required for SoC (early init).
 205         */
 206        usleep_range(2000, 2500);
 207}
 208
 209/* Disable to allow reading SPROM. Don't know the advantages of enabling it. */
 210void bcma_chipco_bcm4331_ext_pa_lines_ctl(struct bcma_drv_cc *cc, bool enable)
 211{
 212        struct bcma_bus *bus = cc->core->bus;
 213        u32 val;
 214
 215        val = bcma_cc_read32(cc, BCMA_CC_CHIPCTL);
 216        if (enable) {
 217                val |= BCMA_CHIPCTL_4331_EXTPA_EN;
 218                if (bus->chipinfo.pkg == 9 || bus->chipinfo.pkg == 11)
 219                        val |= BCMA_CHIPCTL_4331_EXTPA_ON_GPIO2_5;
 220                else if (bus->chipinfo.rev > 0)
 221                        val |= BCMA_CHIPCTL_4331_EXTPA_EN2;
 222        } else {
 223                val &= ~BCMA_CHIPCTL_4331_EXTPA_EN;
 224                val &= ~BCMA_CHIPCTL_4331_EXTPA_EN2;
 225                val &= ~BCMA_CHIPCTL_4331_EXTPA_ON_GPIO2_5;
 226        }
 227        bcma_cc_write32(cc, BCMA_CC_CHIPCTL, val);
 228}
 229
 230static void bcma_pmu_workarounds(struct bcma_drv_cc *cc)
 231{
 232        struct bcma_bus *bus = cc->core->bus;
 233
 234        switch (bus->chipinfo.id) {
 235        case BCMA_CHIP_ID_BCM4313:
 236                /*
 237                 * enable 12 mA drive strength for 4313 and set chipControl
 238                 * register bit 1
 239                 */
 240                bcma_chipco_chipctl_maskset(cc, 0,
 241                                            ~BCMA_CCTRL_4313_12MA_LED_DRIVE,
 242                                            BCMA_CCTRL_4313_12MA_LED_DRIVE);
 243                break;
 244        case BCMA_CHIP_ID_BCM4331:
 245        case BCMA_CHIP_ID_BCM43431:
 246                /* Ext PA lines must be enabled for tx on BCM4331 */
 247                bcma_chipco_bcm4331_ext_pa_lines_ctl(cc, true);
 248                break;
 249        case BCMA_CHIP_ID_BCM43224:
 250        case BCMA_CHIP_ID_BCM43421:
 251                /*
 252                 * enable 12 mA drive strength for 43224 and set chipControl
 253                 * register bit 15
 254                 */
 255                if (bus->chipinfo.rev == 0) {
 256                        bcma_cc_maskset32(cc, BCMA_CC_CHIPCTL,
 257                                          ~BCMA_CCTRL_43224_GPIO_TOGGLE,
 258                                          BCMA_CCTRL_43224_GPIO_TOGGLE);
 259                        bcma_chipco_chipctl_maskset(cc, 0,
 260                                                    ~BCMA_CCTRL_43224A0_12MA_LED_DRIVE,
 261                                                    BCMA_CCTRL_43224A0_12MA_LED_DRIVE);
 262                } else {
 263                        bcma_chipco_chipctl_maskset(cc, 0,
 264                                                    ~BCMA_CCTRL_43224B0_12MA_LED_DRIVE,
 265                                                    BCMA_CCTRL_43224B0_12MA_LED_DRIVE);
 266                }
 267                break;
 268        default:
 269                bcma_debug(bus, "Workarounds unknown or not needed for device 0x%04X\n",
 270                           bus->chipinfo.id);
 271        }
 272}
 273
 274void bcma_pmu_early_init(struct bcma_drv_cc *cc)
 275{
 276        struct bcma_bus *bus = cc->core->bus;
 277        u32 pmucap;
 278
 279        if (cc->core->id.rev >= 35 &&
 280            cc->capabilities_ext & BCMA_CC_CAP_EXT_AOB_PRESENT) {
 281                cc->pmu.core = bcma_find_core(bus, BCMA_CORE_PMU);
 282                if (!cc->pmu.core)
 283                        bcma_warn(bus, "Couldn't find expected PMU core");
 284        }
 285        if (!cc->pmu.core)
 286                cc->pmu.core = cc->core;
 287
 288        pmucap = bcma_pmu_read32(cc, BCMA_CC_PMU_CAP);
 289        cc->pmu.rev = (pmucap & BCMA_CC_PMU_CAP_REVISION);
 290
 291        bcma_debug(bus, "Found rev %u PMU (capabilities 0x%08X)\n", cc->pmu.rev,
 292                   pmucap);
 293}
 294
 295void bcma_pmu_init(struct bcma_drv_cc *cc)
 296{
 297        if (cc->pmu.rev == 1)
 298                bcma_pmu_mask32(cc, BCMA_CC_PMU_CTL,
 299                                ~BCMA_CC_PMU_CTL_NOILPONW);
 300        else
 301                bcma_pmu_set32(cc, BCMA_CC_PMU_CTL,
 302                               BCMA_CC_PMU_CTL_NOILPONW);
 303
 304        bcma_pmu_pll_init(cc);
 305        bcma_pmu_resources_init(cc);
 306        bcma_pmu_workarounds(cc);
 307}
 308
 309u32 bcma_pmu_get_alp_clock(struct bcma_drv_cc *cc)
 310{
 311        struct bcma_bus *bus = cc->core->bus;
 312
 313        switch (bus->chipinfo.id) {
 314        case BCMA_CHIP_ID_BCM4313:
 315        case BCMA_CHIP_ID_BCM43224:
 316        case BCMA_CHIP_ID_BCM43225:
 317        case BCMA_CHIP_ID_BCM43227:
 318        case BCMA_CHIP_ID_BCM43228:
 319        case BCMA_CHIP_ID_BCM4331:
 320        case BCMA_CHIP_ID_BCM43421:
 321        case BCMA_CHIP_ID_BCM43428:
 322        case BCMA_CHIP_ID_BCM43431:
 323        case BCMA_CHIP_ID_BCM4716:
 324        case BCMA_CHIP_ID_BCM47162:
 325        case BCMA_CHIP_ID_BCM4748:
 326        case BCMA_CHIP_ID_BCM4749:
 327        case BCMA_CHIP_ID_BCM5357:
 328        case BCMA_CHIP_ID_BCM53572:
 329        case BCMA_CHIP_ID_BCM6362:
 330                /* always 20Mhz */
 331                return 20000 * 1000;
 332        case BCMA_CHIP_ID_BCM4706:
 333        case BCMA_CHIP_ID_BCM5356:
 334                /* always 25Mhz */
 335                return 25000 * 1000;
 336        case BCMA_CHIP_ID_BCM43460:
 337        case BCMA_CHIP_ID_BCM4352:
 338        case BCMA_CHIP_ID_BCM4360:
 339                if (cc->status & BCMA_CC_CHIPST_4360_XTAL_40MZ)
 340                        return 40000 * 1000;
 341                else
 342                        return 20000 * 1000;
 343        default:
 344                bcma_warn(bus, "No ALP clock specified for %04X device, pmu rev. %d, using default %d Hz\n",
 345                          bus->chipinfo.id, cc->pmu.rev, BCMA_CC_PMU_ALP_CLOCK);
 346        }
 347        return BCMA_CC_PMU_ALP_CLOCK;
 348}
 349
 350/* Find the output of the "m" pll divider given pll controls that start with
 351 * pllreg "pll0" i.e. 12 for main 6 for phy, 0 for misc.
 352 */
 353static u32 bcma_pmu_pll_clock(struct bcma_drv_cc *cc, u32 pll0, u32 m)
 354{
 355        u32 tmp, div, ndiv, p1, p2, fc;
 356        struct bcma_bus *bus = cc->core->bus;
 357
 358        BUG_ON((pll0 & 3) || (pll0 > BCMA_CC_PMU4716_MAINPLL_PLL0));
 359
 360        BUG_ON(!m || m > 4);
 361
 362        if (bus->chipinfo.id == BCMA_CHIP_ID_BCM5357 ||
 363            bus->chipinfo.id == BCMA_CHIP_ID_BCM4749) {
 364                /* Detect failure in clock setting */
 365                tmp = bcma_cc_read32(cc, BCMA_CC_CHIPSTAT);
 366                if (tmp & 0x40000)
 367                        return 133 * 1000000;
 368        }
 369
 370        tmp = bcma_chipco_pll_read(cc, pll0 + BCMA_CC_PPL_P1P2_OFF);
 371        p1 = (tmp & BCMA_CC_PPL_P1_MASK) >> BCMA_CC_PPL_P1_SHIFT;
 372        p2 = (tmp & BCMA_CC_PPL_P2_MASK) >> BCMA_CC_PPL_P2_SHIFT;
 373
 374        tmp = bcma_chipco_pll_read(cc, pll0 + BCMA_CC_PPL_M14_OFF);
 375        div = (tmp >> ((m - 1) * BCMA_CC_PPL_MDIV_WIDTH)) &
 376                BCMA_CC_PPL_MDIV_MASK;
 377
 378        tmp = bcma_chipco_pll_read(cc, pll0 + BCMA_CC_PPL_NM5_OFF);
 379        ndiv = (tmp & BCMA_CC_PPL_NDIV_MASK) >> BCMA_CC_PPL_NDIV_SHIFT;
 380
 381        /* Do calculation in Mhz */
 382        fc = bcma_pmu_get_alp_clock(cc) / 1000000;
 383        fc = (p1 * ndiv * fc) / p2;
 384
 385        /* Return clock in Hertz */
 386        return (fc / div) * 1000000;
 387}
 388
 389static u32 bcma_pmu_pll_clock_bcm4706(struct bcma_drv_cc *cc, u32 pll0, u32 m)
 390{
 391        u32 tmp, ndiv, p1div, p2div;
 392        u32 clock;
 393
 394        BUG_ON(!m || m > 4);
 395
 396        /* Get N, P1 and P2 dividers to determine CPU clock */
 397        tmp = bcma_chipco_pll_read(cc, pll0 + BCMA_CC_PMU6_4706_PROCPLL_OFF);
 398        ndiv = (tmp & BCMA_CC_PMU6_4706_PROC_NDIV_INT_MASK)
 399                >> BCMA_CC_PMU6_4706_PROC_NDIV_INT_SHIFT;
 400        p1div = (tmp & BCMA_CC_PMU6_4706_PROC_P1DIV_MASK)
 401                >> BCMA_CC_PMU6_4706_PROC_P1DIV_SHIFT;
 402        p2div = (tmp & BCMA_CC_PMU6_4706_PROC_P2DIV_MASK)
 403                >> BCMA_CC_PMU6_4706_PROC_P2DIV_SHIFT;
 404
 405        tmp = bcma_cc_read32(cc, BCMA_CC_CHIPSTAT);
 406        if (tmp & BCMA_CC_CHIPST_4706_PKG_OPTION)
 407                /* Low cost bonding: Fixed reference clock 25MHz and m = 4 */
 408                clock = (25000000 / 4) * ndiv * p2div / p1div;
 409        else
 410                /* Fixed reference clock 25MHz and m = 2 */
 411                clock = (25000000 / 2) * ndiv * p2div / p1div;
 412
 413        if (m == BCMA_CC_PMU5_MAINPLL_SSB)
 414                clock = clock / 4;
 415
 416        return clock;
 417}
 418
 419/* query bus clock frequency for PMU-enabled chipcommon */
 420u32 bcma_pmu_get_bus_clock(struct bcma_drv_cc *cc)
 421{
 422        struct bcma_bus *bus = cc->core->bus;
 423
 424        switch (bus->chipinfo.id) {
 425        case BCMA_CHIP_ID_BCM4716:
 426        case BCMA_CHIP_ID_BCM4748:
 427        case BCMA_CHIP_ID_BCM47162:
 428                return bcma_pmu_pll_clock(cc, BCMA_CC_PMU4716_MAINPLL_PLL0,
 429                                          BCMA_CC_PMU5_MAINPLL_SSB);
 430        case BCMA_CHIP_ID_BCM5356:
 431                return bcma_pmu_pll_clock(cc, BCMA_CC_PMU5356_MAINPLL_PLL0,
 432                                          BCMA_CC_PMU5_MAINPLL_SSB);
 433        case BCMA_CHIP_ID_BCM5357:
 434        case BCMA_CHIP_ID_BCM4749:
 435                return bcma_pmu_pll_clock(cc, BCMA_CC_PMU5357_MAINPLL_PLL0,
 436                                          BCMA_CC_PMU5_MAINPLL_SSB);
 437        case BCMA_CHIP_ID_BCM4706:
 438                return bcma_pmu_pll_clock_bcm4706(cc,
 439                                                  BCMA_CC_PMU4706_MAINPLL_PLL0,
 440                                                  BCMA_CC_PMU5_MAINPLL_SSB);
 441        case BCMA_CHIP_ID_BCM53572:
 442                return 75000000;
 443        default:
 444                bcma_warn(bus, "No bus clock specified for %04X device, pmu rev. %d, using default %d Hz\n",
 445                          bus->chipinfo.id, cc->pmu.rev, BCMA_CC_PMU_HT_CLOCK);
 446        }
 447        return BCMA_CC_PMU_HT_CLOCK;
 448}
 449EXPORT_SYMBOL_GPL(bcma_pmu_get_bus_clock);
 450
 451/* query cpu clock frequency for PMU-enabled chipcommon */
 452u32 bcma_pmu_get_cpu_clock(struct bcma_drv_cc *cc)
 453{
 454        struct bcma_bus *bus = cc->core->bus;
 455
 456        if (bus->chipinfo.id == BCMA_CHIP_ID_BCM53572)
 457                return 300000000;
 458
 459        /* New PMUs can have different clock for bus and CPU */
 460        if (cc->pmu.rev >= 5) {
 461                u32 pll;
 462                switch (bus->chipinfo.id) {
 463                case BCMA_CHIP_ID_BCM4706:
 464                        return bcma_pmu_pll_clock_bcm4706(cc,
 465                                                BCMA_CC_PMU4706_MAINPLL_PLL0,
 466                                                BCMA_CC_PMU5_MAINPLL_CPU);
 467                case BCMA_CHIP_ID_BCM5356:
 468                        pll = BCMA_CC_PMU5356_MAINPLL_PLL0;
 469                        break;
 470                case BCMA_CHIP_ID_BCM5357:
 471                case BCMA_CHIP_ID_BCM4749:
 472                        pll = BCMA_CC_PMU5357_MAINPLL_PLL0;
 473                        break;
 474                default:
 475                        pll = BCMA_CC_PMU4716_MAINPLL_PLL0;
 476                        break;
 477                }
 478
 479                return bcma_pmu_pll_clock(cc, pll, BCMA_CC_PMU5_MAINPLL_CPU);
 480        }
 481
 482        /* On old PMUs CPU has the same clock as the bus */
 483        return bcma_pmu_get_bus_clock(cc);
 484}
 485
 486static void bcma_pmu_spuravoid_pll_write(struct bcma_drv_cc *cc, u32 offset,
 487                                         u32 value)
 488{
 489        bcma_pmu_write32(cc, BCMA_CC_PMU_PLLCTL_ADDR, offset);
 490        bcma_pmu_write32(cc, BCMA_CC_PMU_PLLCTL_DATA, value);
 491}
 492
 493void bcma_pmu_spuravoid_pllupdate(struct bcma_drv_cc *cc, int spuravoid)
 494{
 495        u32 tmp = 0;
 496        u8 phypll_offset = 0;
 497        u8 bcm5357_bcm43236_p1div[] = {0x1, 0x5, 0x5};
 498        u8 bcm5357_bcm43236_ndiv[] = {0x30, 0xf6, 0xfc};
 499        struct bcma_bus *bus = cc->core->bus;
 500
 501        switch (bus->chipinfo.id) {
 502        case BCMA_CHIP_ID_BCM5357:
 503        case BCMA_CHIP_ID_BCM4749:
 504        case BCMA_CHIP_ID_BCM53572:
 505                /* 5357[ab]0, 43236[ab]0, and 6362b0 */
 506
 507                /*
 508                 * BCM5357 needs to touch PLL1_PLLCTL[02],
 509                 * so offset PLL0_PLLCTL[02] by 6
 510                 */
 511                phypll_offset = (bus->chipinfo.id == BCMA_CHIP_ID_BCM5357 ||
 512                       bus->chipinfo.id == BCMA_CHIP_ID_BCM4749 ||
 513                       bus->chipinfo.id == BCMA_CHIP_ID_BCM53572) ? 6 : 0;
 514
 515                /* RMW only the P1 divider */
 516                bcma_pmu_write32(cc, BCMA_CC_PMU_PLLCTL_ADDR,
 517                                BCMA_CC_PMU_PLL_CTL0 + phypll_offset);
 518                tmp = bcma_pmu_read32(cc, BCMA_CC_PMU_PLLCTL_DATA);
 519                tmp &= (~(BCMA_CC_PMU1_PLL0_PC0_P1DIV_MASK));
 520                tmp |= (bcm5357_bcm43236_p1div[spuravoid] << BCMA_CC_PMU1_PLL0_PC0_P1DIV_SHIFT);
 521                bcma_pmu_write32(cc, BCMA_CC_PMU_PLLCTL_DATA, tmp);
 522
 523                /* RMW only the int feedback divider */
 524                bcma_pmu_write32(cc, BCMA_CC_PMU_PLLCTL_ADDR,
 525                                BCMA_CC_PMU_PLL_CTL2 + phypll_offset);
 526                tmp = bcma_pmu_read32(cc, BCMA_CC_PMU_PLLCTL_DATA);
 527                tmp &= ~(BCMA_CC_PMU1_PLL0_PC2_NDIV_INT_MASK);
 528                tmp |= (bcm5357_bcm43236_ndiv[spuravoid]) << BCMA_CC_PMU1_PLL0_PC2_NDIV_INT_SHIFT;
 529                bcma_pmu_write32(cc, BCMA_CC_PMU_PLLCTL_DATA, tmp);
 530
 531                tmp = BCMA_CC_PMU_CTL_PLL_UPD;
 532                break;
 533
 534        case BCMA_CHIP_ID_BCM4331:
 535        case BCMA_CHIP_ID_BCM43431:
 536                if (spuravoid == 2) {
 537                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL0,
 538                                                     0x11500014);
 539                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL2,
 540                                                     0x0FC00a08);
 541                } else if (spuravoid == 1) {
 542                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL0,
 543                                                     0x11500014);
 544                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL2,
 545                                                     0x0F600a08);
 546                } else {
 547                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL0,
 548                                                     0x11100014);
 549                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL2,
 550                                                     0x03000a08);
 551                }
 552                tmp = BCMA_CC_PMU_CTL_PLL_UPD;
 553                break;
 554
 555        case BCMA_CHIP_ID_BCM43224:
 556        case BCMA_CHIP_ID_BCM43225:
 557        case BCMA_CHIP_ID_BCM43421:
 558                if (spuravoid == 1) {
 559                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL0,
 560                                                     0x11500010);
 561                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL1,
 562                                                     0x000C0C06);
 563                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL2,
 564                                                     0x0F600a08);
 565                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL3,
 566                                                     0x00000000);
 567                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL4,
 568                                                     0x2001E920);
 569                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL5,
 570                                                     0x88888815);
 571                } else {
 572                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL0,
 573                                                     0x11100010);
 574                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL1,
 575                                                     0x000c0c06);
 576                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL2,
 577                                                     0x03000a08);
 578                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL3,
 579                                                     0x00000000);
 580                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL4,
 581                                                     0x200005c0);
 582                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL5,
 583                                                     0x88888815);
 584                }
 585                tmp = BCMA_CC_PMU_CTL_PLL_UPD;
 586                break;
 587
 588        case BCMA_CHIP_ID_BCM4716:
 589        case BCMA_CHIP_ID_BCM4748:
 590        case BCMA_CHIP_ID_BCM47162:
 591                if (spuravoid == 1) {
 592                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL0,
 593                                                     0x11500060);
 594                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL1,
 595                                                     0x080C0C06);
 596                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL2,
 597                                                     0x0F600000);
 598                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL3,
 599                                                     0x00000000);
 600                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL4,
 601                                                     0x2001E924);
 602                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL5,
 603                                                     0x88888815);
 604                } else {
 605                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL0,
 606                                                     0x11100060);
 607                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL1,
 608                                                     0x080c0c06);
 609                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL2,
 610                                                     0x03000000);
 611                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL3,
 612                                                     0x00000000);
 613                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL4,
 614                                                     0x200005c0);
 615                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL5,
 616                                                     0x88888815);
 617                }
 618
 619                tmp = BCMA_CC_PMU_CTL_PLL_UPD | BCMA_CC_PMU_CTL_NOILPONW;
 620                break;
 621
 622        case BCMA_CHIP_ID_BCM43131:
 623        case BCMA_CHIP_ID_BCM43217:
 624        case BCMA_CHIP_ID_BCM43227:
 625        case BCMA_CHIP_ID_BCM43228:
 626        case BCMA_CHIP_ID_BCM43428:
 627                /* LCNXN */
 628                /*
 629                 * PLL Settings for spur avoidance on/off mode,
 630                 * no on2 support for 43228A0
 631                 */
 632                if (spuravoid == 1) {
 633                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL0,
 634                                                     0x01100014);
 635                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL1,
 636                                                     0x040C0C06);
 637                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL2,
 638                                                     0x03140A08);
 639                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL3,
 640                                                     0x00333333);
 641                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL4,
 642                                                     0x202C2820);
 643                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL5,
 644                                                     0x88888815);
 645                } else {
 646                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL0,
 647                                                     0x11100014);
 648                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL1,
 649                                                     0x040c0c06);
 650                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL2,
 651                                                     0x03000a08);
 652                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL3,
 653                                                     0x00000000);
 654                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL4,
 655                                                     0x200005c0);
 656                        bcma_pmu_spuravoid_pll_write(cc, BCMA_CC_PMU_PLL_CTL5,
 657                                                     0x88888815);
 658                }
 659                tmp = BCMA_CC_PMU_CTL_PLL_UPD;
 660                break;
 661        default:
 662                bcma_err(bus, "Unknown spuravoidance settings for chip 0x%04X, not changing PLL\n",
 663                         bus->chipinfo.id);
 664                break;
 665        }
 666
 667        tmp |= bcma_pmu_read32(cc, BCMA_CC_PMU_CTL);
 668        bcma_pmu_write32(cc, BCMA_CC_PMU_CTL, tmp);
 669}
 670EXPORT_SYMBOL_GPL(bcma_pmu_spuravoid_pllupdate);
 671