linux/drivers/ssb/driver_chipcommon_pmu.c
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   1/*
   2 * Sonics Silicon Backplane
   3 * Broadcom ChipCommon Power Management Unit driver
   4 *
   5 * Copyright 2009, Michael Buesch <mb@bu3sch.de>
   6 * Copyright 2007, Broadcom Corporation
   7 *
   8 * Licensed under the GNU/GPL. See COPYING for details.
   9 */
  10
  11#include <linux/ssb/ssb.h>
  12#include <linux/ssb/ssb_regs.h>
  13#include <linux/ssb/ssb_driver_chipcommon.h>
  14#include <linux/delay.h>
  15
  16#include "ssb_private.h"
  17
  18static u32 ssb_chipco_pll_read(struct ssb_chipcommon *cc, u32 offset)
  19{
  20        chipco_write32(cc, SSB_CHIPCO_PLLCTL_ADDR, offset);
  21        return chipco_read32(cc, SSB_CHIPCO_PLLCTL_DATA);
  22}
  23
  24static void ssb_chipco_pll_write(struct ssb_chipcommon *cc,
  25                                 u32 offset, u32 value)
  26{
  27        chipco_write32(cc, SSB_CHIPCO_PLLCTL_ADDR, offset);
  28        chipco_write32(cc, SSB_CHIPCO_PLLCTL_DATA, value);
  29}
  30
  31static void ssb_chipco_regctl_maskset(struct ssb_chipcommon *cc,
  32                                   u32 offset, u32 mask, u32 set)
  33{
  34        u32 value;
  35
  36        chipco_read32(cc, SSB_CHIPCO_REGCTL_ADDR);
  37        chipco_write32(cc, SSB_CHIPCO_REGCTL_ADDR, offset);
  38        chipco_read32(cc, SSB_CHIPCO_REGCTL_ADDR);
  39        value = chipco_read32(cc, SSB_CHIPCO_REGCTL_DATA);
  40        value &= mask;
  41        value |= set;
  42        chipco_write32(cc, SSB_CHIPCO_REGCTL_DATA, value);
  43        chipco_read32(cc, SSB_CHIPCO_REGCTL_DATA);
  44}
  45
  46struct pmu0_plltab_entry {
  47        u16 freq;       /* Crystal frequency in kHz.*/
  48        u8 xf;          /* Crystal frequency value for PMU control */
  49        u8 wb_int;
  50        u32 wb_frac;
  51};
  52
  53static const struct pmu0_plltab_entry pmu0_plltab[] = {
  54        { .freq = 12000, .xf =  1, .wb_int = 73, .wb_frac = 349525, },
  55        { .freq = 13000, .xf =  2, .wb_int = 67, .wb_frac = 725937, },
  56        { .freq = 14400, .xf =  3, .wb_int = 61, .wb_frac = 116508, },
  57        { .freq = 15360, .xf =  4, .wb_int = 57, .wb_frac = 305834, },
  58        { .freq = 16200, .xf =  5, .wb_int = 54, .wb_frac = 336579, },
  59        { .freq = 16800, .xf =  6, .wb_int = 52, .wb_frac = 399457, },
  60        { .freq = 19200, .xf =  7, .wb_int = 45, .wb_frac = 873813, },
  61        { .freq = 19800, .xf =  8, .wb_int = 44, .wb_frac = 466033, },
  62        { .freq = 20000, .xf =  9, .wb_int = 44, .wb_frac = 0,      },
  63        { .freq = 25000, .xf = 10, .wb_int = 70, .wb_frac = 419430, },
  64        { .freq = 26000, .xf = 11, .wb_int = 67, .wb_frac = 725937, },
  65        { .freq = 30000, .xf = 12, .wb_int = 58, .wb_frac = 699050, },
  66        { .freq = 38400, .xf = 13, .wb_int = 45, .wb_frac = 873813, },
  67        { .freq = 40000, .xf = 14, .wb_int = 45, .wb_frac = 0,      },
  68};
  69#define SSB_PMU0_DEFAULT_XTALFREQ       20000
  70
  71static const struct pmu0_plltab_entry * pmu0_plltab_find_entry(u32 crystalfreq)
  72{
  73        const struct pmu0_plltab_entry *e;
  74        unsigned int i;
  75
  76        for (i = 0; i < ARRAY_SIZE(pmu0_plltab); i++) {
  77                e = &pmu0_plltab[i];
  78                if (e->freq == crystalfreq)
  79                        return e;
  80        }
  81
  82        return NULL;
  83}
  84
  85/* Tune the PLL to the crystal speed. crystalfreq is in kHz. */
  86static void ssb_pmu0_pllinit_r0(struct ssb_chipcommon *cc,
  87                                u32 crystalfreq)
  88{
  89        struct ssb_bus *bus = cc->dev->bus;
  90        const struct pmu0_plltab_entry *e = NULL;
  91        u32 pmuctl, tmp, pllctl;
  92        unsigned int i;
  93
  94        if ((bus->chip_id == 0x5354) && !crystalfreq) {
  95                /* The 5354 crystal freq is 25MHz */
  96                crystalfreq = 25000;
  97        }
  98        if (crystalfreq)
  99                e = pmu0_plltab_find_entry(crystalfreq);
 100        if (!e)
 101                e = pmu0_plltab_find_entry(SSB_PMU0_DEFAULT_XTALFREQ);
 102        BUG_ON(!e);
 103        crystalfreq = e->freq;
 104        cc->pmu.crystalfreq = e->freq;
 105
 106        /* Check if the PLL already is programmed to this frequency. */
 107        pmuctl = chipco_read32(cc, SSB_CHIPCO_PMU_CTL);
 108        if (((pmuctl & SSB_CHIPCO_PMU_CTL_XTALFREQ) >> SSB_CHIPCO_PMU_CTL_XTALFREQ_SHIFT) == e->xf) {
 109                /* We're already there... */
 110                return;
 111        }
 112
 113        ssb_printk(KERN_INFO PFX "Programming PLL to %u.%03u MHz\n",
 114                   (crystalfreq / 1000), (crystalfreq % 1000));
 115
 116        /* First turn the PLL off. */
 117        switch (bus->chip_id) {
 118        case 0x4328:
 119                chipco_mask32(cc, SSB_CHIPCO_PMU_MINRES_MSK,
 120                              ~(1 << SSB_PMURES_4328_BB_PLL_PU));
 121                chipco_mask32(cc, SSB_CHIPCO_PMU_MAXRES_MSK,
 122                              ~(1 << SSB_PMURES_4328_BB_PLL_PU));
 123                break;
 124        case 0x5354:
 125                chipco_mask32(cc, SSB_CHIPCO_PMU_MINRES_MSK,
 126                              ~(1 << SSB_PMURES_5354_BB_PLL_PU));
 127                chipco_mask32(cc, SSB_CHIPCO_PMU_MAXRES_MSK,
 128                              ~(1 << SSB_PMURES_5354_BB_PLL_PU));
 129                break;
 130        default:
 131                SSB_WARN_ON(1);
 132        }
 133        for (i = 1500; i; i--) {
 134                tmp = chipco_read32(cc, SSB_CHIPCO_CLKCTLST);
 135                if (!(tmp & SSB_CHIPCO_CLKCTLST_HAVEHT))
 136                        break;
 137                udelay(10);
 138        }
 139        tmp = chipco_read32(cc, SSB_CHIPCO_CLKCTLST);
 140        if (tmp & SSB_CHIPCO_CLKCTLST_HAVEHT)
 141                ssb_printk(KERN_EMERG PFX "Failed to turn the PLL off!\n");
 142
 143        /* Set PDIV in PLL control 0. */
 144        pllctl = ssb_chipco_pll_read(cc, SSB_PMU0_PLLCTL0);
 145        if (crystalfreq >= SSB_PMU0_PLLCTL0_PDIV_FREQ)
 146                pllctl |= SSB_PMU0_PLLCTL0_PDIV_MSK;
 147        else
 148                pllctl &= ~SSB_PMU0_PLLCTL0_PDIV_MSK;
 149        ssb_chipco_pll_write(cc, SSB_PMU0_PLLCTL0, pllctl);
 150
 151        /* Set WILD in PLL control 1. */
 152        pllctl = ssb_chipco_pll_read(cc, SSB_PMU0_PLLCTL1);
 153        pllctl &= ~SSB_PMU0_PLLCTL1_STOPMOD;
 154        pllctl &= ~(SSB_PMU0_PLLCTL1_WILD_IMSK | SSB_PMU0_PLLCTL1_WILD_FMSK);
 155        pllctl |= ((u32)e->wb_int << SSB_PMU0_PLLCTL1_WILD_IMSK_SHIFT) & SSB_PMU0_PLLCTL1_WILD_IMSK;
 156        pllctl |= ((u32)e->wb_frac << SSB_PMU0_PLLCTL1_WILD_FMSK_SHIFT) & SSB_PMU0_PLLCTL1_WILD_FMSK;
 157        if (e->wb_frac == 0)
 158                pllctl |= SSB_PMU0_PLLCTL1_STOPMOD;
 159        ssb_chipco_pll_write(cc, SSB_PMU0_PLLCTL1, pllctl);
 160
 161        /* Set WILD in PLL control 2. */
 162        pllctl = ssb_chipco_pll_read(cc, SSB_PMU0_PLLCTL2);
 163        pllctl &= ~SSB_PMU0_PLLCTL2_WILD_IMSKHI;
 164        pllctl |= (((u32)e->wb_int >> 4) << SSB_PMU0_PLLCTL2_WILD_IMSKHI_SHIFT) & SSB_PMU0_PLLCTL2_WILD_IMSKHI;
 165        ssb_chipco_pll_write(cc, SSB_PMU0_PLLCTL2, pllctl);
 166
 167        /* Set the crystalfrequency and the divisor. */
 168        pmuctl = chipco_read32(cc, SSB_CHIPCO_PMU_CTL);
 169        pmuctl &= ~SSB_CHIPCO_PMU_CTL_ILP_DIV;
 170        pmuctl |= (((crystalfreq + 127) / 128 - 1) << SSB_CHIPCO_PMU_CTL_ILP_DIV_SHIFT)
 171                        & SSB_CHIPCO_PMU_CTL_ILP_DIV;
 172        pmuctl &= ~SSB_CHIPCO_PMU_CTL_XTALFREQ;
 173        pmuctl |= ((u32)e->xf << SSB_CHIPCO_PMU_CTL_XTALFREQ_SHIFT) & SSB_CHIPCO_PMU_CTL_XTALFREQ;
 174        chipco_write32(cc, SSB_CHIPCO_PMU_CTL, pmuctl);
 175}
 176
 177struct pmu1_plltab_entry {
 178        u16 freq;       /* Crystal frequency in kHz.*/
 179        u8 xf;          /* Crystal frequency value for PMU control */
 180        u8 ndiv_int;
 181        u32 ndiv_frac;
 182        u8 p1div;
 183        u8 p2div;
 184};
 185
 186static const struct pmu1_plltab_entry pmu1_plltab[] = {
 187        { .freq = 12000, .xf =  1, .p1div = 3, .p2div = 22, .ndiv_int =  0x9, .ndiv_frac = 0xFFFFEF, },
 188        { .freq = 13000, .xf =  2, .p1div = 1, .p2div =  6, .ndiv_int =  0xb, .ndiv_frac = 0x483483, },
 189        { .freq = 14400, .xf =  3, .p1div = 1, .p2div = 10, .ndiv_int =  0xa, .ndiv_frac = 0x1C71C7, },
 190        { .freq = 15360, .xf =  4, .p1div = 1, .p2div =  5, .ndiv_int =  0xb, .ndiv_frac = 0x755555, },
 191        { .freq = 16200, .xf =  5, .p1div = 1, .p2div = 10, .ndiv_int =  0x5, .ndiv_frac = 0x6E9E06, },
 192        { .freq = 16800, .xf =  6, .p1div = 1, .p2div = 10, .ndiv_int =  0x5, .ndiv_frac = 0x3CF3CF, },
 193        { .freq = 19200, .xf =  7, .p1div = 1, .p2div =  9, .ndiv_int =  0x5, .ndiv_frac = 0x17B425, },
 194        { .freq = 19800, .xf =  8, .p1div = 1, .p2div = 11, .ndiv_int =  0x4, .ndiv_frac = 0xA57EB,  },
 195        { .freq = 20000, .xf =  9, .p1div = 1, .p2div = 11, .ndiv_int =  0x4, .ndiv_frac = 0,        },
 196        { .freq = 24000, .xf = 10, .p1div = 3, .p2div = 11, .ndiv_int =  0xa, .ndiv_frac = 0,        },
 197        { .freq = 25000, .xf = 11, .p1div = 5, .p2div = 16, .ndiv_int =  0xb, .ndiv_frac = 0,        },
 198        { .freq = 26000, .xf = 12, .p1div = 1, .p2div =  2, .ndiv_int = 0x10, .ndiv_frac = 0xEC4EC4, },
 199        { .freq = 30000, .xf = 13, .p1div = 3, .p2div =  8, .ndiv_int =  0xb, .ndiv_frac = 0,        },
 200        { .freq = 38400, .xf = 14, .p1div = 1, .p2div =  5, .ndiv_int =  0x4, .ndiv_frac = 0x955555, },
 201        { .freq = 40000, .xf = 15, .p1div = 1, .p2div =  2, .ndiv_int =  0xb, .ndiv_frac = 0,        },
 202};
 203
 204#define SSB_PMU1_DEFAULT_XTALFREQ       15360
 205
 206static const struct pmu1_plltab_entry * pmu1_plltab_find_entry(u32 crystalfreq)
 207{
 208        const struct pmu1_plltab_entry *e;
 209        unsigned int i;
 210
 211        for (i = 0; i < ARRAY_SIZE(pmu1_plltab); i++) {
 212                e = &pmu1_plltab[i];
 213                if (e->freq == crystalfreq)
 214                        return e;
 215        }
 216
 217        return NULL;
 218}
 219
 220/* Tune the PLL to the crystal speed. crystalfreq is in kHz. */
 221static void ssb_pmu1_pllinit_r0(struct ssb_chipcommon *cc,
 222                                u32 crystalfreq)
 223{
 224        struct ssb_bus *bus = cc->dev->bus;
 225        const struct pmu1_plltab_entry *e = NULL;
 226        u32 buffer_strength = 0;
 227        u32 tmp, pllctl, pmuctl;
 228        unsigned int i;
 229
 230        if (bus->chip_id == 0x4312) {
 231                /* We do not touch the BCM4312 PLL and assume
 232                 * the default crystal settings work out-of-the-box. */
 233                cc->pmu.crystalfreq = 20000;
 234                return;
 235        }
 236
 237        if (crystalfreq)
 238                e = pmu1_plltab_find_entry(crystalfreq);
 239        if (!e)
 240                e = pmu1_plltab_find_entry(SSB_PMU1_DEFAULT_XTALFREQ);
 241        BUG_ON(!e);
 242        crystalfreq = e->freq;
 243        cc->pmu.crystalfreq = e->freq;
 244
 245        /* Check if the PLL already is programmed to this frequency. */
 246        pmuctl = chipco_read32(cc, SSB_CHIPCO_PMU_CTL);
 247        if (((pmuctl & SSB_CHIPCO_PMU_CTL_XTALFREQ) >> SSB_CHIPCO_PMU_CTL_XTALFREQ_SHIFT) == e->xf) {
 248                /* We're already there... */
 249                return;
 250        }
 251
 252        ssb_printk(KERN_INFO PFX "Programming PLL to %u.%03u MHz\n",
 253                   (crystalfreq / 1000), (crystalfreq % 1000));
 254
 255        /* First turn the PLL off. */
 256        switch (bus->chip_id) {
 257        case 0x4325:
 258                chipco_mask32(cc, SSB_CHIPCO_PMU_MINRES_MSK,
 259                              ~((1 << SSB_PMURES_4325_BBPLL_PWRSW_PU) |
 260                                (1 << SSB_PMURES_4325_HT_AVAIL)));
 261                chipco_mask32(cc, SSB_CHIPCO_PMU_MAXRES_MSK,
 262                              ~((1 << SSB_PMURES_4325_BBPLL_PWRSW_PU) |
 263                                (1 << SSB_PMURES_4325_HT_AVAIL)));
 264                /* Adjust the BBPLL to 2 on all channels later. */
 265                buffer_strength = 0x222222;
 266                break;
 267        default:
 268                SSB_WARN_ON(1);
 269        }
 270        for (i = 1500; i; i--) {
 271                tmp = chipco_read32(cc, SSB_CHIPCO_CLKCTLST);
 272                if (!(tmp & SSB_CHIPCO_CLKCTLST_HAVEHT))
 273                        break;
 274                udelay(10);
 275        }
 276        tmp = chipco_read32(cc, SSB_CHIPCO_CLKCTLST);
 277        if (tmp & SSB_CHIPCO_CLKCTLST_HAVEHT)
 278                ssb_printk(KERN_EMERG PFX "Failed to turn the PLL off!\n");
 279
 280        /* Set p1div and p2div. */
 281        pllctl = ssb_chipco_pll_read(cc, SSB_PMU1_PLLCTL0);
 282        pllctl &= ~(SSB_PMU1_PLLCTL0_P1DIV | SSB_PMU1_PLLCTL0_P2DIV);
 283        pllctl |= ((u32)e->p1div << SSB_PMU1_PLLCTL0_P1DIV_SHIFT) & SSB_PMU1_PLLCTL0_P1DIV;
 284        pllctl |= ((u32)e->p2div << SSB_PMU1_PLLCTL0_P2DIV_SHIFT) & SSB_PMU1_PLLCTL0_P2DIV;
 285        ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL0, pllctl);
 286
 287        /* Set ndiv int and ndiv mode */
 288        pllctl = ssb_chipco_pll_read(cc, SSB_PMU1_PLLCTL2);
 289        pllctl &= ~(SSB_PMU1_PLLCTL2_NDIVINT | SSB_PMU1_PLLCTL2_NDIVMODE);
 290        pllctl |= ((u32)e->ndiv_int << SSB_PMU1_PLLCTL2_NDIVINT_SHIFT) & SSB_PMU1_PLLCTL2_NDIVINT;
 291        pllctl |= (1 << SSB_PMU1_PLLCTL2_NDIVMODE_SHIFT) & SSB_PMU1_PLLCTL2_NDIVMODE;
 292        ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL2, pllctl);
 293
 294        /* Set ndiv frac */
 295        pllctl = ssb_chipco_pll_read(cc, SSB_PMU1_PLLCTL3);
 296        pllctl &= ~SSB_PMU1_PLLCTL3_NDIVFRAC;
 297        pllctl |= ((u32)e->ndiv_frac << SSB_PMU1_PLLCTL3_NDIVFRAC_SHIFT) & SSB_PMU1_PLLCTL3_NDIVFRAC;
 298        ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL3, pllctl);
 299
 300        /* Change the drive strength, if required. */
 301        if (buffer_strength) {
 302                pllctl = ssb_chipco_pll_read(cc, SSB_PMU1_PLLCTL5);
 303                pllctl &= ~SSB_PMU1_PLLCTL5_CLKDRV;
 304                pllctl |= (buffer_strength << SSB_PMU1_PLLCTL5_CLKDRV_SHIFT) & SSB_PMU1_PLLCTL5_CLKDRV;
 305                ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL5, pllctl);
 306        }
 307
 308        /* Tune the crystalfreq and the divisor. */
 309        pmuctl = chipco_read32(cc, SSB_CHIPCO_PMU_CTL);
 310        pmuctl &= ~(SSB_CHIPCO_PMU_CTL_ILP_DIV | SSB_CHIPCO_PMU_CTL_XTALFREQ);
 311        pmuctl |= ((((u32)e->freq + 127) / 128 - 1) << SSB_CHIPCO_PMU_CTL_ILP_DIV_SHIFT)
 312                        & SSB_CHIPCO_PMU_CTL_ILP_DIV;
 313        pmuctl |= ((u32)e->xf << SSB_CHIPCO_PMU_CTL_XTALFREQ_SHIFT) & SSB_CHIPCO_PMU_CTL_XTALFREQ;
 314        chipco_write32(cc, SSB_CHIPCO_PMU_CTL, pmuctl);
 315}
 316
 317static void ssb_pmu_pll_init(struct ssb_chipcommon *cc)
 318{
 319        struct ssb_bus *bus = cc->dev->bus;
 320        u32 crystalfreq = 0; /* in kHz. 0 = keep default freq. */
 321
 322        if (bus->bustype == SSB_BUSTYPE_SSB) {
 323                /* TODO: The user may override the crystal frequency. */
 324        }
 325
 326        switch (bus->chip_id) {
 327        case 0x4312:
 328        case 0x4325:
 329                ssb_pmu1_pllinit_r0(cc, crystalfreq);
 330                break;
 331        case 0x4328:
 332        case 0x5354:
 333                ssb_pmu0_pllinit_r0(cc, crystalfreq);
 334                break;
 335        case 0x4322:
 336                if (cc->pmu.rev == 2) {
 337                        chipco_write32(cc, SSB_CHIPCO_PLLCTL_ADDR, 0x0000000A);
 338                        chipco_write32(cc, SSB_CHIPCO_PLLCTL_DATA, 0x380005C0);
 339                }
 340                break;
 341        default:
 342                ssb_printk(KERN_ERR PFX
 343                           "ERROR: PLL init unknown for device %04X\n",
 344                           bus->chip_id);
 345        }
 346}
 347
 348struct pmu_res_updown_tab_entry {
 349        u8 resource;    /* The resource number */
 350        u16 updown;     /* The updown value */
 351};
 352
 353enum pmu_res_depend_tab_task {
 354        PMU_RES_DEP_SET = 1,
 355        PMU_RES_DEP_ADD,
 356        PMU_RES_DEP_REMOVE,
 357};
 358
 359struct pmu_res_depend_tab_entry {
 360        u8 resource;    /* The resource number */
 361        u8 task;        /* SET | ADD | REMOVE */
 362        u32 depend;     /* The depend mask */
 363};
 364
 365static const struct pmu_res_updown_tab_entry pmu_res_updown_tab_4328a0[] = {
 366        { .resource = SSB_PMURES_4328_EXT_SWITCHER_PWM,         .updown = 0x0101, },
 367        { .resource = SSB_PMURES_4328_BB_SWITCHER_PWM,          .updown = 0x1F01, },
 368        { .resource = SSB_PMURES_4328_BB_SWITCHER_BURST,        .updown = 0x010F, },
 369        { .resource = SSB_PMURES_4328_BB_EXT_SWITCHER_BURST,    .updown = 0x0101, },
 370        { .resource = SSB_PMURES_4328_ILP_REQUEST,              .updown = 0x0202, },
 371        { .resource = SSB_PMURES_4328_RADIO_SWITCHER_PWM,       .updown = 0x0F01, },
 372        { .resource = SSB_PMURES_4328_RADIO_SWITCHER_BURST,     .updown = 0x0F01, },
 373        { .resource = SSB_PMURES_4328_ROM_SWITCH,               .updown = 0x0101, },
 374        { .resource = SSB_PMURES_4328_PA_REF_LDO,               .updown = 0x0F01, },
 375        { .resource = SSB_PMURES_4328_RADIO_LDO,                .updown = 0x0F01, },
 376        { .resource = SSB_PMURES_4328_AFE_LDO,                  .updown = 0x0F01, },
 377        { .resource = SSB_PMURES_4328_PLL_LDO,                  .updown = 0x0F01, },
 378        { .resource = SSB_PMURES_4328_BG_FILTBYP,               .updown = 0x0101, },
 379        { .resource = SSB_PMURES_4328_TX_FILTBYP,               .updown = 0x0101, },
 380        { .resource = SSB_PMURES_4328_RX_FILTBYP,               .updown = 0x0101, },
 381        { .resource = SSB_PMURES_4328_XTAL_PU,                  .updown = 0x0101, },
 382        { .resource = SSB_PMURES_4328_XTAL_EN,                  .updown = 0xA001, },
 383        { .resource = SSB_PMURES_4328_BB_PLL_FILTBYP,           .updown = 0x0101, },
 384        { .resource = SSB_PMURES_4328_RF_PLL_FILTBYP,           .updown = 0x0101, },
 385        { .resource = SSB_PMURES_4328_BB_PLL_PU,                .updown = 0x0701, },
 386};
 387
 388static const struct pmu_res_depend_tab_entry pmu_res_depend_tab_4328a0[] = {
 389        {
 390                /* Adjust ILP Request to avoid forcing EXT/BB into burst mode. */
 391                .resource = SSB_PMURES_4328_ILP_REQUEST,
 392                .task = PMU_RES_DEP_SET,
 393                .depend = ((1 << SSB_PMURES_4328_EXT_SWITCHER_PWM) |
 394                           (1 << SSB_PMURES_4328_BB_SWITCHER_PWM)),
 395        },
 396};
 397
 398static const struct pmu_res_updown_tab_entry pmu_res_updown_tab_4325a0[] = {
 399        { .resource = SSB_PMURES_4325_XTAL_PU,                  .updown = 0x1501, },
 400};
 401
 402static const struct pmu_res_depend_tab_entry pmu_res_depend_tab_4325a0[] = {
 403        {
 404                /* Adjust HT-Available dependencies. */
 405                .resource = SSB_PMURES_4325_HT_AVAIL,
 406                .task = PMU_RES_DEP_ADD,
 407                .depend = ((1 << SSB_PMURES_4325_RX_PWRSW_PU) |
 408                           (1 << SSB_PMURES_4325_TX_PWRSW_PU) |
 409                           (1 << SSB_PMURES_4325_LOGEN_PWRSW_PU) |
 410                           (1 << SSB_PMURES_4325_AFE_PWRSW_PU)),
 411        },
 412};
 413
 414static void ssb_pmu_resources_init(struct ssb_chipcommon *cc)
 415{
 416        struct ssb_bus *bus = cc->dev->bus;
 417        u32 min_msk = 0, max_msk = 0;
 418        unsigned int i;
 419        const struct pmu_res_updown_tab_entry *updown_tab = NULL;
 420        unsigned int updown_tab_size;
 421        const struct pmu_res_depend_tab_entry *depend_tab = NULL;
 422        unsigned int depend_tab_size;
 423
 424        switch (bus->chip_id) {
 425        case 0x4312:
 426        case 0x4322:
 427                /* We keep the default settings:
 428                 * min_msk = 0xCBB
 429                 * max_msk = 0x7FFFF
 430                 */
 431                break;
 432        case 0x4325:
 433                /* Power OTP down later. */
 434                min_msk = (1 << SSB_PMURES_4325_CBUCK_BURST) |
 435                          (1 << SSB_PMURES_4325_LNLDO2_PU);
 436                if (chipco_read32(cc, SSB_CHIPCO_CHIPSTAT) &
 437                    SSB_CHIPCO_CHST_4325_PMUTOP_2B)
 438                        min_msk |= (1 << SSB_PMURES_4325_CLDO_CBUCK_BURST);
 439                /* The PLL may turn on, if it decides so. */
 440                max_msk = 0xFFFFF;
 441                updown_tab = pmu_res_updown_tab_4325a0;
 442                updown_tab_size = ARRAY_SIZE(pmu_res_updown_tab_4325a0);
 443                depend_tab = pmu_res_depend_tab_4325a0;
 444                depend_tab_size = ARRAY_SIZE(pmu_res_depend_tab_4325a0);
 445                break;
 446        case 0x4328:
 447                min_msk = (1 << SSB_PMURES_4328_EXT_SWITCHER_PWM) |
 448                          (1 << SSB_PMURES_4328_BB_SWITCHER_PWM) |
 449                          (1 << SSB_PMURES_4328_XTAL_EN);
 450                /* The PLL may turn on, if it decides so. */
 451                max_msk = 0xFFFFF;
 452                updown_tab = pmu_res_updown_tab_4328a0;
 453                updown_tab_size = ARRAY_SIZE(pmu_res_updown_tab_4328a0);
 454                depend_tab = pmu_res_depend_tab_4328a0;
 455                depend_tab_size = ARRAY_SIZE(pmu_res_depend_tab_4328a0);
 456                break;
 457        case 0x5354:
 458                /* The PLL may turn on, if it decides so. */
 459                max_msk = 0xFFFFF;
 460                break;
 461        default:
 462                ssb_printk(KERN_ERR PFX
 463                           "ERROR: PMU resource config unknown for device %04X\n",
 464                           bus->chip_id);
 465        }
 466
 467        if (updown_tab) {
 468                for (i = 0; i < updown_tab_size; i++) {
 469                        chipco_write32(cc, SSB_CHIPCO_PMU_RES_TABSEL,
 470                                       updown_tab[i].resource);
 471                        chipco_write32(cc, SSB_CHIPCO_PMU_RES_UPDNTM,
 472                                       updown_tab[i].updown);
 473                }
 474        }
 475        if (depend_tab) {
 476                for (i = 0; i < depend_tab_size; i++) {
 477                        chipco_write32(cc, SSB_CHIPCO_PMU_RES_TABSEL,
 478                                       depend_tab[i].resource);
 479                        switch (depend_tab[i].task) {
 480                        case PMU_RES_DEP_SET:
 481                                chipco_write32(cc, SSB_CHIPCO_PMU_RES_DEPMSK,
 482                                               depend_tab[i].depend);
 483                                break;
 484                        case PMU_RES_DEP_ADD:
 485                                chipco_set32(cc, SSB_CHIPCO_PMU_RES_DEPMSK,
 486                                             depend_tab[i].depend);
 487                                break;
 488                        case PMU_RES_DEP_REMOVE:
 489                                chipco_mask32(cc, SSB_CHIPCO_PMU_RES_DEPMSK,
 490                                              ~(depend_tab[i].depend));
 491                                break;
 492                        default:
 493                                SSB_WARN_ON(1);
 494                        }
 495                }
 496        }
 497
 498        /* Set the resource masks. */
 499        if (min_msk)
 500                chipco_write32(cc, SSB_CHIPCO_PMU_MINRES_MSK, min_msk);
 501        if (max_msk)
 502                chipco_write32(cc, SSB_CHIPCO_PMU_MAXRES_MSK, max_msk);
 503}
 504
 505/* http://bcm-v4.sipsolutions.net/802.11/SSB/PmuInit */
 506void ssb_pmu_init(struct ssb_chipcommon *cc)
 507{
 508        u32 pmucap;
 509
 510        if (!(cc->capabilities & SSB_CHIPCO_CAP_PMU))
 511                return;
 512
 513        pmucap = chipco_read32(cc, SSB_CHIPCO_PMU_CAP);
 514        cc->pmu.rev = (pmucap & SSB_CHIPCO_PMU_CAP_REVISION);
 515
 516        ssb_dprintk(KERN_DEBUG PFX "Found rev %u PMU (capabilities 0x%08X)\n",
 517                    cc->pmu.rev, pmucap);
 518
 519        if (cc->pmu.rev == 1)
 520                chipco_mask32(cc, SSB_CHIPCO_PMU_CTL,
 521                              ~SSB_CHIPCO_PMU_CTL_NOILPONW);
 522        else
 523                chipco_set32(cc, SSB_CHIPCO_PMU_CTL,
 524                             SSB_CHIPCO_PMU_CTL_NOILPONW);
 525        ssb_pmu_pll_init(cc);
 526        ssb_pmu_resources_init(cc);
 527}
 528
 529void ssb_pmu_set_ldo_voltage(struct ssb_chipcommon *cc,
 530                             enum ssb_pmu_ldo_volt_id id, u32 voltage)
 531{
 532        struct ssb_bus *bus = cc->dev->bus;
 533        u32 addr, shift, mask;
 534
 535        switch (bus->chip_id) {
 536        case 0x4328:
 537        case 0x5354:
 538                switch (id) {
 539                case LDO_VOLT1:
 540                        addr = 2;
 541                        shift = 25;
 542                        mask = 0xF;
 543                        break;
 544                case LDO_VOLT2:
 545                        addr = 3;
 546                        shift = 1;
 547                        mask = 0xF;
 548                        break;
 549                case LDO_VOLT3:
 550                        addr = 3;
 551                        shift = 9;
 552                        mask = 0xF;
 553                        break;
 554                case LDO_PAREF:
 555                        addr = 3;
 556                        shift = 17;
 557                        mask = 0x3F;
 558                        break;
 559                default:
 560                        SSB_WARN_ON(1);
 561                        return;
 562                }
 563                break;
 564        case 0x4312:
 565                if (SSB_WARN_ON(id != LDO_PAREF))
 566                        return;
 567                addr = 0;
 568                shift = 21;
 569                mask = 0x3F;
 570                break;
 571        default:
 572                return;
 573        }
 574
 575        ssb_chipco_regctl_maskset(cc, addr, ~(mask << shift),
 576                                  (voltage & mask) << shift);
 577}
 578
 579void ssb_pmu_set_ldo_paref(struct ssb_chipcommon *cc, bool on)
 580{
 581        struct ssb_bus *bus = cc->dev->bus;
 582        int ldo;
 583
 584        switch (bus->chip_id) {
 585        case 0x4312:
 586                ldo = SSB_PMURES_4312_PA_REF_LDO;
 587                break;
 588        case 0x4328:
 589                ldo = SSB_PMURES_4328_PA_REF_LDO;
 590                break;
 591        case 0x5354:
 592                ldo = SSB_PMURES_5354_PA_REF_LDO;
 593                break;
 594        default:
 595                return;
 596        }
 597
 598        if (on)
 599                chipco_set32(cc, SSB_CHIPCO_PMU_MINRES_MSK, 1 << ldo);
 600        else
 601                chipco_mask32(cc, SSB_CHIPCO_PMU_MINRES_MSK, ~(1 << ldo));
 602        chipco_read32(cc, SSB_CHIPCO_PMU_MINRES_MSK); //SPEC FIXME found via mmiotrace - dummy read?
 603}
 604
 605EXPORT_SYMBOL(ssb_pmu_set_ldo_voltage);
 606EXPORT_SYMBOL(ssb_pmu_set_ldo_paref);
 607