drivers/ssb/driver_chipcommon_pmu.c

   1 /*
   2  * Sonics Silicon Backplane
   3  * Broadcom ChipCommon Power Management Unit driver
   4  *
   5  * Copyright 2009, Michael Buesch <m@bues.ch>
   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 #include <linux/export.h>
  16 #ifdef CONFIG_BCM47XX
  17 #include <linux/bcm47xx_nvram.h>
  18 #endif
  19
  20 #include "ssb_private.h"
  21
  22 static u32 ssb_chipco_pll_read(struct ssb_chipcommon *cc, u32 offset)
  23 {
  24         chipco_write32(cc, SSB_CHIPCO_PLLCTL_ADDR, offset);
  25         return chipco_read32(cc, SSB_CHIPCO_PLLCTL_DATA);
  26 }
  27
  28 static void ssb_chipco_pll_write(struct ssb_chipcommon *cc,
  29                                  u32 offset, u32 value)
  30 {
  31         chipco_write32(cc, SSB_CHIPCO_PLLCTL_ADDR, offset);
  32         chipco_write32(cc, SSB_CHIPCO_PLLCTL_DATA, value);
  33 }
  34
  35 static void ssb_chipco_regctl_maskset(struct ssb_chipcommon *cc,
  36                                    u32 offset, u32 mask, u32 set)
  37 {
  38         u32 value;
  39
  40         chipco_read32(cc, SSB_CHIPCO_REGCTL_ADDR);
  41         chipco_write32(cc, SSB_CHIPCO_REGCTL_ADDR, offset);
  42         chipco_read32(cc, SSB_CHIPCO_REGCTL_ADDR);
  43         value = chipco_read32(cc, SSB_CHIPCO_REGCTL_DATA);
  44         value &= mask;
  45         value |= set;
  46         chipco_write32(cc, SSB_CHIPCO_REGCTL_DATA, value);
  47         chipco_read32(cc, SSB_CHIPCO_REGCTL_DATA);
  48 }
  49
  50 struct pmu0_plltab_entry {
  51         u16 freq;       /* Crystal frequency in kHz.*/
  52         u8 xf;          /* Crystal frequency value for PMU control */
  53         u8 wb_int;
  54         u32 wb_frac;
  55 };
  56
  57 static const struct pmu0_plltab_entry pmu0_plltab[] = {
  58         { .freq = 12000, .xf =  1, .wb_int = 73, .wb_frac = 349525, },
  59         { .freq = 13000, .xf =  2, .wb_int = 67, .wb_frac = 725937, },
  60         { .freq = 14400, .xf =  3, .wb_int = 61, .wb_frac = 116508, },
  61         { .freq = 15360, .xf =  4, .wb_int = 57, .wb_frac = 305834, },
  62         { .freq = 16200, .xf =  5, .wb_int = 54, .wb_frac = 336579, },
  63         { .freq = 16800, .xf =  6, .wb_int = 52, .wb_frac = 399457, },
  64         { .freq = 19200, .xf =  7, .wb_int = 45, .wb_frac = 873813, },
  65         { .freq = 19800, .xf =  8, .wb_int = 44, .wb_frac = 466033, },
  66         { .freq = 20000, .xf =  9, .wb_int = 44, .wb_frac = 0,      },
  67         { .freq = 25000, .xf = 10, .wb_int = 70, .wb_frac = 419430, },
  68         { .freq = 26000, .xf = 11, .wb_int = 67, .wb_frac = 725937, },
  69         { .freq = 30000, .xf = 12, .wb_int = 58, .wb_frac = 699050, },
  70         { .freq = 38400, .xf = 13, .wb_int = 45, .wb_frac = 873813, },
  71         { .freq = 40000, .xf = 14, .wb_int = 45, .wb_frac = 0,      },
  72 };
  73 #define SSB_PMU0_DEFAULT_XTALFREQ       20000
  74
  75 static const struct pmu0_plltab_entry * pmu0_plltab_find_entry(u32 crystalfreq)
  76 {
  77         const struct pmu0_plltab_entry *e;
  78         unsigned int i;
  79
  80         for (i = 0; i < ARRAY_SIZE(pmu0_plltab); i++) {
  81                 e = &pmu0_plltab[i];
  82                 if (e->freq == crystalfreq)
  83                         return e;
  84         }
  85
  86         return NULL;
  87 }
  88
  89 /* Tune the PLL to the crystal speed. crystalfreq is in kHz. */
  90 static void ssb_pmu0_pllinit_r0(struct ssb_chipcommon *cc,
  91                                 u32 crystalfreq)
  92 {
  93         struct ssb_bus *bus = cc->dev->bus;
  94         const struct pmu0_plltab_entry *e = NULL;
  95         u32 pmuctl, tmp, pllctl;
  96         unsigned int i;
  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_info("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_emerg("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
 177 struct 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
 186 static 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
 206 static 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. */
 221 static 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_info("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_emerg("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
 317 static 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 #ifdef CONFIG_BCM47XX
 324                 char buf[20];
 325                 if (bcm47xx_nvram_getenv("xtalfreq", buf, sizeof(buf)) >= 0)
 326                         crystalfreq = simple_strtoul(buf, NULL, 0);
 327 #endif
 328         }
 329
 330         switch (bus->chip_id) {
 331         case 0x4312:
 332         case 0x4325:
 333                 ssb_pmu1_pllinit_r0(cc, crystalfreq);
 334                 break;
 335         case 0x4328:
 336                 ssb_pmu0_pllinit_r0(cc, crystalfreq);
 337                 break;
 338         case 0x5354:
 339                 if (crystalfreq == 0)
 340                         crystalfreq = 25000;
 341                 ssb_pmu0_pllinit_r0(cc, crystalfreq);
 342                 break;
 343         case 0x4322:
 344                 if (cc->pmu.rev == 2) {
 345                         chipco_write32(cc, SSB_CHIPCO_PLLCTL_ADDR, 0x0000000A);
 346                         chipco_write32(cc, SSB_CHIPCO_PLLCTL_DATA, 0x380005C0);
 347                 }
 348                 break;
 349         case 43222:
 350                 break;
 351         default:
 352                 ssb_err("ERROR: PLL init unknown for device %04X\n",
 353                         bus->chip_id);
 354         }
 355 }
 356
 357 struct pmu_res_updown_tab_entry {
 358         u8 resource;    /* The resource number */
 359         u16 updown;     /* The updown value */
 360 };
 361
 362 enum pmu_res_depend_tab_task {
 363         PMU_RES_DEP_SET = 1,
 364         PMU_RES_DEP_ADD,
 365         PMU_RES_DEP_REMOVE,
 366 };
 367
 368 struct pmu_res_depend_tab_entry {
 369         u8 resource;    /* The resource number */
 370         u8 task;        /* SET | ADD | REMOVE */
 371         u32 depend;     /* The depend mask */
 372 };
 373
 374 static const struct pmu_res_updown_tab_entry pmu_res_updown_tab_4328a0[] = {
 375         { .resource = SSB_PMURES_4328_EXT_SWITCHER_PWM,         .updown = 0x0101, },
 376         { .resource = SSB_PMURES_4328_BB_SWITCHER_PWM,          .updown = 0x1F01, },
 377         { .resource = SSB_PMURES_4328_BB_SWITCHER_BURST,        .updown = 0x010F, },
 378         { .resource = SSB_PMURES_4328_BB_EXT_SWITCHER_BURST,    .updown = 0x0101, },
 379         { .resource = SSB_PMURES_4328_ILP_REQUEST,              .updown = 0x0202, },
 380         { .resource = SSB_PMURES_4328_RADIO_SWITCHER_PWM,       .updown = 0x0F01, },
 381         { .resource = SSB_PMURES_4328_RADIO_SWITCHER_BURST,     .updown = 0x0F01, },
 382         { .resource = SSB_PMURES_4328_ROM_SWITCH,               .updown = 0x0101, },
 383         { .resource = SSB_PMURES_4328_PA_REF_LDO,               .updown = 0x0F01, },
 384         { .resource = SSB_PMURES_4328_RADIO_LDO,                .updown = 0x0F01, },
 385         { .resource = SSB_PMURES_4328_AFE_LDO,                  .updown = 0x0F01, },
 386         { .resource = SSB_PMURES_4328_PLL_LDO,                  .updown = 0x0F01, },
 387         { .resource = SSB_PMURES_4328_BG_FILTBYP,               .updown = 0x0101, },
 388         { .resource = SSB_PMURES_4328_TX_FILTBYP,               .updown = 0x0101, },
 389         { .resource = SSB_PMURES_4328_RX_FILTBYP,               .updown = 0x0101, },
 390         { .resource = SSB_PMURES_4328_XTAL_PU,                  .updown = 0x0101, },
 391         { .resource = SSB_PMURES_4328_XTAL_EN,                  .updown = 0xA001, },
 392         { .resource = SSB_PMURES_4328_BB_PLL_FILTBYP,           .updown = 0x0101, },
 393         { .resource = SSB_PMURES_4328_RF_PLL_FILTBYP,           .updown = 0x0101, },
 394         { .resource = SSB_PMURES_4328_BB_PLL_PU,                .updown = 0x0701, },
 395 };
 396
 397 static const struct pmu_res_depend_tab_entry pmu_res_depend_tab_4328a0[] = {
 398         {
 399                 /* Adjust ILP Request to avoid forcing EXT/BB into burst mode. */
 400                 .resource = SSB_PMURES_4328_ILP_REQUEST,
 401                 .task = PMU_RES_DEP_SET,
 402                 .depend = ((1 << SSB_PMURES_4328_EXT_SWITCHER_PWM) |
 403                            (1 << SSB_PMURES_4328_BB_SWITCHER_PWM)),
 404         },
 405 };
 406
 407 static const struct pmu_res_updown_tab_entry pmu_res_updown_tab_4325a0[] = {
 408         { .resource = SSB_PMURES_4325_XTAL_PU,                  .updown = 0x1501, },
 409 };
 410
 411 static const struct pmu_res_depend_tab_entry pmu_res_depend_tab_4325a0[] = {
 412         {
 413                 /* Adjust HT-Available dependencies. */
 414                 .resource = SSB_PMURES_4325_HT_AVAIL,
 415                 .task = PMU_RES_DEP_ADD,
 416                 .depend = ((1 << SSB_PMURES_4325_RX_PWRSW_PU) |
 417                            (1 << SSB_PMURES_4325_TX_PWRSW_PU) |
 418                            (1 << SSB_PMURES_4325_LOGEN_PWRSW_PU) |
 419                            (1 << SSB_PMURES_4325_AFE_PWRSW_PU)),
 420         },
 421 };
 422
 423 static void ssb_pmu_resources_init(struct ssb_chipcommon *cc)
 424 {
 425         struct ssb_bus *bus = cc->dev->bus;
 426         u32 min_msk = 0, max_msk = 0;
 427         unsigned int i;
 428         const struct pmu_res_updown_tab_entry *updown_tab = NULL;
 429         unsigned int updown_tab_size = 0;
 430         const struct pmu_res_depend_tab_entry *depend_tab = NULL;
 431         unsigned int depend_tab_size = 0;
 432
 433         switch (bus->chip_id) {
 434         case 0x4312:
 435                  min_msk = 0xCBB;
 436                  break;
 437         case 0x4322:
 438         case 43222:
 439                 /* We keep the default settings:
 440                  * min_msk = 0xCBB
 441                  * max_msk = 0x7FFFF
 442                  */
 443                 break;
 444         case 0x4325:
 445                 /* Power OTP down later. */
 446                 min_msk = (1 << SSB_PMURES_4325_CBUCK_BURST) |
 447                           (1 << SSB_PMURES_4325_LNLDO2_PU);
 448                 if (chipco_read32(cc, SSB_CHIPCO_CHIPSTAT) &
 449                     SSB_CHIPCO_CHST_4325_PMUTOP_2B)
 450                         min_msk |= (1 << SSB_PMURES_4325_CLDO_CBUCK_BURST);
 451                 /* The PLL may turn on, if it decides so. */
 452                 max_msk = 0xFFFFF;
 453                 updown_tab = pmu_res_updown_tab_4325a0;
 454                 updown_tab_size = ARRAY_SIZE(pmu_res_updown_tab_4325a0);
 455                 depend_tab = pmu_res_depend_tab_4325a0;
 456                 depend_tab_size = ARRAY_SIZE(pmu_res_depend_tab_4325a0);
 457                 break;
 458         case 0x4328:
 459                 min_msk = (1 << SSB_PMURES_4328_EXT_SWITCHER_PWM) |
 460                           (1 << SSB_PMURES_4328_BB_SWITCHER_PWM) |
 461                           (1 << SSB_PMURES_4328_XTAL_EN);
 462                 /* The PLL may turn on, if it decides so. */
 463                 max_msk = 0xFFFFF;
 464                 updown_tab = pmu_res_updown_tab_4328a0;
 465                 updown_tab_size = ARRAY_SIZE(pmu_res_updown_tab_4328a0);
 466                 depend_tab = pmu_res_depend_tab_4328a0;
 467                 depend_tab_size = ARRAY_SIZE(pmu_res_depend_tab_4328a0);
 468                 break;
 469         case 0x5354:
 470                 /* The PLL may turn on, if it decides so. */
 471                 max_msk = 0xFFFFF;
 472                 break;
 473         default:
 474                 ssb_err("ERROR: PMU resource config unknown for device %04X\n",
 475                         bus->chip_id);
 476         }
 477
 478         if (updown_tab) {
 479                 for (i = 0; i < updown_tab_size; i++) {
 480                         chipco_write32(cc, SSB_CHIPCO_PMU_RES_TABSEL,
 481                                        updown_tab[i].resource);
 482                         chipco_write32(cc, SSB_CHIPCO_PMU_RES_UPDNTM,
 483                                        updown_tab[i].updown);
 484                 }
 485         }
 486         if (depend_tab) {
 487                 for (i = 0; i < depend_tab_size; i++) {
 488                         chipco_write32(cc, SSB_CHIPCO_PMU_RES_TABSEL,
 489                                        depend_tab[i].resource);
 490                         switch (depend_tab[i].task) {
 491                         case PMU_RES_DEP_SET:
 492                                 chipco_write32(cc, SSB_CHIPCO_PMU_RES_DEPMSK,
 493                                                depend_tab[i].depend);
 494                                 break;
 495                         case PMU_RES_DEP_ADD:
 496                                 chipco_set32(cc, SSB_CHIPCO_PMU_RES_DEPMSK,
 497                                              depend_tab[i].depend);
 498                                 break;
 499                         case PMU_RES_DEP_REMOVE:
 500                                 chipco_mask32(cc, SSB_CHIPCO_PMU_RES_DEPMSK,
 501                                               ~(depend_tab[i].depend));
 502                                 break;
 503                         default:
 504                                 SSB_WARN_ON(1);
 505                         }
 506                 }
 507         }
 508
 509         /* Set the resource masks. */
 510         if (min_msk)
 511                 chipco_write32(cc, SSB_CHIPCO_PMU_MINRES_MSK, min_msk);
 512         if (max_msk)
 513                 chipco_write32(cc, SSB_CHIPCO_PMU_MAXRES_MSK, max_msk);
 514 }
 515
 516 /* http://bcm-v4.sipsolutions.net/802.11/SSB/PmuInit */
 517 void ssb_pmu_init(struct ssb_chipcommon *cc)
 518 {
 519         u32 pmucap;
 520
 521         if (!(cc->capabilities & SSB_CHIPCO_CAP_PMU))
 522                 return;
 523
 524         pmucap = chipco_read32(cc, SSB_CHIPCO_PMU_CAP);
 525         cc->pmu.rev = (pmucap & SSB_CHIPCO_PMU_CAP_REVISION);
 526
 527         ssb_dbg("Found rev %u PMU (capabilities 0x%08X)\n",
 528                 cc->pmu.rev, pmucap);
 529
 530         if (cc->pmu.rev == 1)
 531                 chipco_mask32(cc, SSB_CHIPCO_PMU_CTL,
 532                               ~SSB_CHIPCO_PMU_CTL_NOILPONW);
 533         else
 534                 chipco_set32(cc, SSB_CHIPCO_PMU_CTL,
 535                              SSB_CHIPCO_PMU_CTL_NOILPONW);
 536         ssb_pmu_pll_init(cc);
 537         ssb_pmu_resources_init(cc);
 538 }
 539
 540 void ssb_pmu_set_ldo_voltage(struct ssb_chipcommon *cc,
 541                              enum ssb_pmu_ldo_volt_id id, u32 voltage)
 542 {
 543         struct ssb_bus *bus = cc->dev->bus;
 544         u32 addr, shift, mask;
 545
 546         switch (bus->chip_id) {
 547         case 0x4328:
 548         case 0x5354:
 549                 switch (id) {
 550                 case LDO_VOLT1:
 551                         addr = 2;
 552                         shift = 25;
 553                         mask = 0xF;
 554                         break;
 555                 case LDO_VOLT2:
 556                         addr = 3;
 557                         shift = 1;
 558                         mask = 0xF;
 559                         break;
 560                 case LDO_VOLT3:
 561                         addr = 3;
 562                         shift = 9;
 563                         mask = 0xF;
 564                         break;
 565                 case LDO_PAREF:
 566                         addr = 3;
 567                         shift = 17;
 568                         mask = 0x3F;
 569                         break;
 570                 default:
 571                         SSB_WARN_ON(1);
 572                         return;
 573                 }
 574                 break;
 575         case 0x4312:
 576                 if (SSB_WARN_ON(id != LDO_PAREF))
 577                         return;
 578                 addr = 0;
 579                 shift = 21;
 580                 mask = 0x3F;
 581                 break;
 582         default:
 583                 return;
 584         }
 585
 586         ssb_chipco_regctl_maskset(cc, addr, ~(mask << shift),
 587                                   (voltage & mask) << shift);
 588 }
 589
 590 void ssb_pmu_set_ldo_paref(struct ssb_chipcommon *cc, bool on)
 591 {
 592         struct ssb_bus *bus = cc->dev->bus;
 593         int ldo;
 594
 595         switch (bus->chip_id) {
 596         case 0x4312:
 597                 ldo = SSB_PMURES_4312_PA_REF_LDO;
 598                 break;
 599         case 0x4328:
 600                 ldo = SSB_PMURES_4328_PA_REF_LDO;
 601                 break;
 602         case 0x5354:
 603                 ldo = SSB_PMURES_5354_PA_REF_LDO;
 604                 break;
 605         default:
 606                 return;
 607         }
 608
 609         if (on)
 610                 chipco_set32(cc, SSB_CHIPCO_PMU_MINRES_MSK, 1 << ldo);
 611         else
 612                 chipco_mask32(cc, SSB_CHIPCO_PMU_MINRES_MSK, ~(1 << ldo));
 613         chipco_read32(cc, SSB_CHIPCO_PMU_MINRES_MSK); //SPEC FIXME found via mmiotrace - dummy read?
 614 }
 615
 616 EXPORT_SYMBOL(ssb_pmu_set_ldo_voltage);
 617 EXPORT_SYMBOL(ssb_pmu_set_ldo_paref);
 618
 619 static u32 ssb_pmu_get_alp_clock_clk0(struct ssb_chipcommon *cc)
 620 {
 621         u32 crystalfreq;
 622         const struct pmu0_plltab_entry *e = NULL;
 623
 624         crystalfreq = (chipco_read32(cc, SSB_CHIPCO_PMU_CTL) &
 625                        SSB_CHIPCO_PMU_CTL_XTALFREQ)  >> SSB_CHIPCO_PMU_CTL_XTALFREQ_SHIFT;
 626         e = pmu0_plltab_find_entry(crystalfreq);
 627         BUG_ON(!e);
 628         return e->freq * 1000;
 629 }
 630
 631 u32 ssb_pmu_get_alp_clock(struct ssb_chipcommon *cc)
 632 {
 633         struct ssb_bus *bus = cc->dev->bus;
 634
 635         switch (bus->chip_id) {
 636         case 0x5354:
 637                 return ssb_pmu_get_alp_clock_clk0(cc);
 638         default:
 639                 ssb_err("ERROR: PMU alp clock unknown for device %04X\n",
 640                         bus->chip_id);
 641                 return 0;
 642         }
 643 }
 644
 645 u32 ssb_pmu_get_cpu_clock(struct ssb_chipcommon *cc)
 646 {
 647         struct ssb_bus *bus = cc->dev->bus;
 648
 649         switch (bus->chip_id) {
 650         case 0x5354:
 651                 /* 5354 chip uses a non programmable PLL of frequency 240MHz */
 652                 return 240000000;
 653         default:
 654                 ssb_err("ERROR: PMU cpu clock unknown for device %04X\n",
 655                         bus->chip_id);
 656                 return 0;
 657         }
 658 }
 659
 660 u32 ssb_pmu_get_controlclock(struct ssb_chipcommon *cc)
 661 {
 662         struct ssb_bus *bus = cc->dev->bus;
 663
 664         switch (bus->chip_id) {
 665         case 0x5354:
 666                 return 120000000;
 667         default:
 668                 ssb_err("ERROR: PMU controlclock unknown for device %04X\n",
 669                         bus->chip_id);
 670                 return 0;
 671         }
 672 }
 673
 674 void ssb_pmu_spuravoid_pllupdate(struct ssb_chipcommon *cc, int spuravoid)
 675 {
 676         u32 pmu_ctl = 0;
 677
 678         switch (cc->dev->bus->chip_id) {
 679         case 0x4322:
 680                 ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL0, 0x11100070);
 681                 ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL1, 0x1014140a);
 682                 ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL5, 0x88888854);
 683                 if (spuravoid == 1)
 684                         ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL2, 0x05201828);
 685                 else
 686                         ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL2, 0x05001828);
 687                 pmu_ctl = SSB_CHIPCO_PMU_CTL_PLL_UPD;
 688                 break;
 689         case 43222:
 690                 if (spuravoid == 1) {
 691                         ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL0, 0x11500008);
 692                         ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL1, 0x0C000C06);
 693                         ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL2, 0x0F600a08);
 694                         ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL3, 0x00000000);
 695                         ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL4, 0x2001E920);
 696                         ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL5, 0x88888815);
 697                 } else {
 698                         ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL0, 0x11100008);
 699                         ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL1, 0x0c000c06);
 700                         ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL2, 0x03000a08);
 701                         ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL3, 0x00000000);
 702                         ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL4, 0x200005c0);
 703                         ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL5, 0x88888855);
 704                 }
 705                 pmu_ctl = SSB_CHIPCO_PMU_CTL_PLL_UPD;
 706                 break;
 707         default:
 708                 ssb_printk(KERN_ERR PFX
 709                            "Unknown spuravoidance settings for chip 0x%04X, not changing PLL\n",
 710                            cc->dev->bus->chip_id);
 711                 return;
 712         }
 713
 714         chipco_set32(cc, SSB_CHIPCO_PMU_CTL, pmu_ctl);
 715 }
 716 EXPORT_SYMBOL_GPL(ssb_pmu_spuravoid_pllupdate);