drivers/clk/samsung/clk-pll.c

   1 /*
   2  * Copyright (c) 2013 Samsung Electronics Co., Ltd.
   3  * Copyright (c) 2013 Linaro Ltd.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * This file contains the utility functions to register the pll clocks.
  10 */
  11
  12 #include <linux/errno.h>
  13 #include <linux/hrtimer.h>
  14 #include <linux/delay.h>
  15 #include <linux/slab.h>
  16 #include <linux/clkdev.h>
  17 #include "clk.h"
  18 #include "clk-pll.h"
  19
  20 #define PLL_TIMEOUT_MS          10
  21
  22 struct samsung_clk_pll {
  23         struct clk_hw           hw;
  24         void __iomem            *lock_reg;
  25         void __iomem            *con_reg;
  26         enum samsung_pll_type   type;
  27         unsigned int            rate_count;
  28         const struct samsung_pll_rate_table *rate_table;
  29 };
  30
  31 #define to_clk_pll(_hw) container_of(_hw, struct samsung_clk_pll, hw)
  32
  33 static const struct samsung_pll_rate_table *samsung_get_pll_settings(
  34                                 struct samsung_clk_pll *pll, unsigned long rate)
  35 {
  36         const struct samsung_pll_rate_table  *rate_table = pll->rate_table;
  37         int i;
  38
  39         for (i = 0; i < pll->rate_count; i++) {
  40                 if (rate == rate_table[i].rate)
  41                         return &rate_table[i];
  42         }
  43
  44         return NULL;
  45 }
  46
  47 static long samsung_pll_round_rate(struct clk_hw *hw,
  48                         unsigned long drate, unsigned long *prate)
  49 {
  50         struct samsung_clk_pll *pll = to_clk_pll(hw);
  51         const struct samsung_pll_rate_table *rate_table = pll->rate_table;
  52         int i;
  53
  54         /* Assumming rate_table is in descending order */
  55         for (i = 0; i < pll->rate_count; i++) {
  56                 if (drate >= rate_table[i].rate)
  57                         return rate_table[i].rate;
  58         }
  59
  60         /* return minimum supported value */
  61         return rate_table[i - 1].rate;
  62 }
  63
  64 /*
  65  * PLL2126 Clock Type
  66  */
  67
  68 #define PLL2126_MDIV_MASK       (0xff)
  69 #define PLL2126_PDIV_MASK       (0x3f)
  70 #define PLL2126_SDIV_MASK       (0x3)
  71 #define PLL2126_MDIV_SHIFT      (16)
  72 #define PLL2126_PDIV_SHIFT      (8)
  73 #define PLL2126_SDIV_SHIFT      (0)
  74
  75 static unsigned long samsung_pll2126_recalc_rate(struct clk_hw *hw,
  76                                 unsigned long parent_rate)
  77 {
  78         struct samsung_clk_pll *pll = to_clk_pll(hw);
  79         u32 pll_con, mdiv, pdiv, sdiv;
  80         u64 fvco = parent_rate;
  81
  82         pll_con = __raw_readl(pll->con_reg);
  83         mdiv = (pll_con >> PLL2126_MDIV_SHIFT) & PLL2126_MDIV_MASK;
  84         pdiv = (pll_con >> PLL2126_PDIV_SHIFT) & PLL2126_PDIV_MASK;
  85         sdiv = (pll_con >> PLL2126_SDIV_SHIFT) & PLL2126_SDIV_MASK;
  86
  87         fvco *= (mdiv + 8);
  88         do_div(fvco, (pdiv + 2) << sdiv);
  89
  90         return (unsigned long)fvco;
  91 }
  92
  93 static const struct clk_ops samsung_pll2126_clk_ops = {
  94         .recalc_rate = samsung_pll2126_recalc_rate,
  95 };
  96
  97 /*
  98  * PLL3000 Clock Type
  99  */
 100
 101 #define PLL3000_MDIV_MASK       (0xff)
 102 #define PLL3000_PDIV_MASK       (0x3)
 103 #define PLL3000_SDIV_MASK       (0x3)
 104 #define PLL3000_MDIV_SHIFT      (16)
 105 #define PLL3000_PDIV_SHIFT      (8)
 106 #define PLL3000_SDIV_SHIFT      (0)
 107
 108 static unsigned long samsung_pll3000_recalc_rate(struct clk_hw *hw,
 109                                 unsigned long parent_rate)
 110 {
 111         struct samsung_clk_pll *pll = to_clk_pll(hw);
 112         u32 pll_con, mdiv, pdiv, sdiv;
 113         u64 fvco = parent_rate;
 114
 115         pll_con = __raw_readl(pll->con_reg);
 116         mdiv = (pll_con >> PLL3000_MDIV_SHIFT) & PLL3000_MDIV_MASK;
 117         pdiv = (pll_con >> PLL3000_PDIV_SHIFT) & PLL3000_PDIV_MASK;
 118         sdiv = (pll_con >> PLL3000_SDIV_SHIFT) & PLL3000_SDIV_MASK;
 119
 120         fvco *= (2 * (mdiv + 8));
 121         do_div(fvco, pdiv << sdiv);
 122
 123         return (unsigned long)fvco;
 124 }
 125
 126 static const struct clk_ops samsung_pll3000_clk_ops = {
 127         .recalc_rate = samsung_pll3000_recalc_rate,
 128 };
 129
 130 /*
 131  * PLL35xx Clock Type
 132  */
 133 /* Maximum lock time can be 270 * PDIV cycles */
 134 #define PLL35XX_LOCK_FACTOR     (270)
 135
 136 #define PLL35XX_MDIV_MASK       (0x3FF)
 137 #define PLL35XX_PDIV_MASK       (0x3F)
 138 #define PLL35XX_SDIV_MASK       (0x7)
 139 #define PLL35XX_LOCK_STAT_MASK  (0x1)
 140 #define PLL35XX_MDIV_SHIFT      (16)
 141 #define PLL35XX_PDIV_SHIFT      (8)
 142 #define PLL35XX_SDIV_SHIFT      (0)
 143 #define PLL35XX_LOCK_STAT_SHIFT (29)
 144
 145 static unsigned long samsung_pll35xx_recalc_rate(struct clk_hw *hw,
 146                                 unsigned long parent_rate)
 147 {
 148         struct samsung_clk_pll *pll = to_clk_pll(hw);
 149         u32 mdiv, pdiv, sdiv, pll_con;
 150         u64 fvco = parent_rate;
 151
 152         pll_con = __raw_readl(pll->con_reg);
 153         mdiv = (pll_con >> PLL35XX_MDIV_SHIFT) & PLL35XX_MDIV_MASK;
 154         pdiv = (pll_con >> PLL35XX_PDIV_SHIFT) & PLL35XX_PDIV_MASK;
 155         sdiv = (pll_con >> PLL35XX_SDIV_SHIFT) & PLL35XX_SDIV_MASK;
 156
 157         fvco *= mdiv;
 158         do_div(fvco, (pdiv << sdiv));
 159
 160         return (unsigned long)fvco;
 161 }
 162
 163 static inline bool samsung_pll35xx_mp_change(
 164                 const struct samsung_pll_rate_table *rate, u32 pll_con)
 165 {
 166         u32 old_mdiv, old_pdiv;
 167
 168         old_mdiv = (pll_con >> PLL35XX_MDIV_SHIFT) & PLL35XX_MDIV_MASK;
 169         old_pdiv = (pll_con >> PLL35XX_PDIV_SHIFT) & PLL35XX_PDIV_MASK;
 170
 171         return (rate->mdiv != old_mdiv || rate->pdiv != old_pdiv);
 172 }
 173
 174 static int samsung_pll35xx_set_rate(struct clk_hw *hw, unsigned long drate,
 175                                         unsigned long prate)
 176 {
 177         struct samsung_clk_pll *pll = to_clk_pll(hw);
 178         const struct samsung_pll_rate_table *rate;
 179         u32 tmp;
 180
 181         /* Get required rate settings from table */
 182         rate = samsung_get_pll_settings(pll, drate);
 183         if (!rate) {
 184                 pr_err("%s: Invalid rate : %lu for pll clk %s\n", __func__,
 185                         drate, __clk_get_name(hw->clk));
 186                 return -EINVAL;
 187         }
 188
 189         tmp = __raw_readl(pll->con_reg);
 190
 191         if (!(samsung_pll35xx_mp_change(rate, tmp))) {
 192                 /* If only s change, change just s value only*/
 193                 tmp &= ~(PLL35XX_SDIV_MASK << PLL35XX_SDIV_SHIFT);
 194                 tmp |= rate->sdiv << PLL35XX_SDIV_SHIFT;
 195                 __raw_writel(tmp, pll->con_reg);
 196
 197                 return 0;
 198         }
 199
 200         /* Set PLL lock time. */
 201         __raw_writel(rate->pdiv * PLL35XX_LOCK_FACTOR,
 202                         pll->lock_reg);
 203
 204         /* Change PLL PMS values */
 205         tmp &= ~((PLL35XX_MDIV_MASK << PLL35XX_MDIV_SHIFT) |
 206                         (PLL35XX_PDIV_MASK << PLL35XX_PDIV_SHIFT) |
 207                         (PLL35XX_SDIV_MASK << PLL35XX_SDIV_SHIFT));
 208         tmp |= (rate->mdiv << PLL35XX_MDIV_SHIFT) |
 209                         (rate->pdiv << PLL35XX_PDIV_SHIFT) |
 210                         (rate->sdiv << PLL35XX_SDIV_SHIFT);
 211         __raw_writel(tmp, pll->con_reg);
 212
 213         /* wait_lock_time */
 214         do {
 215                 cpu_relax();
 216                 tmp = __raw_readl(pll->con_reg);
 217         } while (!(tmp & (PLL35XX_LOCK_STAT_MASK
 218                                 << PLL35XX_LOCK_STAT_SHIFT)));
 219         return 0;
 220 }
 221
 222 static const struct clk_ops samsung_pll35xx_clk_ops = {
 223         .recalc_rate = samsung_pll35xx_recalc_rate,
 224         .round_rate = samsung_pll_round_rate,
 225         .set_rate = samsung_pll35xx_set_rate,
 226 };
 227
 228 static const struct clk_ops samsung_pll35xx_clk_min_ops = {
 229         .recalc_rate = samsung_pll35xx_recalc_rate,
 230 };
 231
 232 /*
 233  * PLL36xx Clock Type
 234  */
 235 /* Maximum lock time can be 3000 * PDIV cycles */
 236 #define PLL36XX_LOCK_FACTOR    (3000)
 237
 238 #define PLL36XX_KDIV_MASK       (0xFFFF)
 239 #define PLL36XX_MDIV_MASK       (0x1FF)
 240 #define PLL36XX_PDIV_MASK       (0x3F)
 241 #define PLL36XX_SDIV_MASK       (0x7)
 242 #define PLL36XX_MDIV_SHIFT      (16)
 243 #define PLL36XX_PDIV_SHIFT      (8)
 244 #define PLL36XX_SDIV_SHIFT      (0)
 245 #define PLL36XX_KDIV_SHIFT      (0)
 246 #define PLL36XX_LOCK_STAT_SHIFT (29)
 247
 248 static unsigned long samsung_pll36xx_recalc_rate(struct clk_hw *hw,
 249                                 unsigned long parent_rate)
 250 {
 251         struct samsung_clk_pll *pll = to_clk_pll(hw);
 252         u32 mdiv, pdiv, sdiv, pll_con0, pll_con1;
 253         s16 kdiv;
 254         u64 fvco = parent_rate;
 255
 256         pll_con0 = __raw_readl(pll->con_reg);
 257         pll_con1 = __raw_readl(pll->con_reg + 4);
 258         mdiv = (pll_con0 >> PLL36XX_MDIV_SHIFT) & PLL36XX_MDIV_MASK;
 259         pdiv = (pll_con0 >> PLL36XX_PDIV_SHIFT) & PLL36XX_PDIV_MASK;
 260         sdiv = (pll_con0 >> PLL36XX_SDIV_SHIFT) & PLL36XX_SDIV_MASK;
 261         kdiv = (s16)(pll_con1 & PLL36XX_KDIV_MASK);
 262
 263         fvco *= (mdiv << 16) + kdiv;
 264         do_div(fvco, (pdiv << sdiv));
 265         fvco >>= 16;
 266
 267         return (unsigned long)fvco;
 268 }
 269
 270 static inline bool samsung_pll36xx_mpk_change(
 271         const struct samsung_pll_rate_table *rate, u32 pll_con0, u32 pll_con1)
 272 {
 273         u32 old_mdiv, old_pdiv, old_kdiv;
 274
 275         old_mdiv = (pll_con0 >> PLL36XX_MDIV_SHIFT) & PLL36XX_MDIV_MASK;
 276         old_pdiv = (pll_con0 >> PLL36XX_PDIV_SHIFT) & PLL36XX_PDIV_MASK;
 277         old_kdiv = (pll_con1 >> PLL36XX_KDIV_SHIFT) & PLL36XX_KDIV_MASK;
 278
 279         return (rate->mdiv != old_mdiv || rate->pdiv != old_pdiv ||
 280                 rate->kdiv != old_kdiv);
 281 }
 282
 283 static int samsung_pll36xx_set_rate(struct clk_hw *hw, unsigned long drate,
 284                                         unsigned long parent_rate)
 285 {
 286         struct samsung_clk_pll *pll = to_clk_pll(hw);
 287         u32 tmp, pll_con0, pll_con1;
 288         const struct samsung_pll_rate_table *rate;
 289
 290         rate = samsung_get_pll_settings(pll, drate);
 291         if (!rate) {
 292                 pr_err("%s: Invalid rate : %lu for pll clk %s\n", __func__,
 293                         drate, __clk_get_name(hw->clk));
 294                 return -EINVAL;
 295         }
 296
 297         pll_con0 = __raw_readl(pll->con_reg);
 298         pll_con1 = __raw_readl(pll->con_reg + 4);
 299
 300         if (!(samsung_pll36xx_mpk_change(rate, pll_con0, pll_con1))) {
 301                 /* If only s change, change just s value only*/
 302                 pll_con0 &= ~(PLL36XX_SDIV_MASK << PLL36XX_SDIV_SHIFT);
 303                 pll_con0 |= (rate->sdiv << PLL36XX_SDIV_SHIFT);
 304                 __raw_writel(pll_con0, pll->con_reg);
 305
 306                 return 0;
 307         }
 308
 309         /* Set PLL lock time. */
 310         __raw_writel(rate->pdiv * PLL36XX_LOCK_FACTOR, pll->lock_reg);
 311
 312          /* Change PLL PMS values */
 313         pll_con0 &= ~((PLL36XX_MDIV_MASK << PLL36XX_MDIV_SHIFT) |
 314                         (PLL36XX_PDIV_MASK << PLL36XX_PDIV_SHIFT) |
 315                         (PLL36XX_SDIV_MASK << PLL36XX_SDIV_SHIFT));
 316         pll_con0 |= (rate->mdiv << PLL36XX_MDIV_SHIFT) |
 317                         (rate->pdiv << PLL36XX_PDIV_SHIFT) |
 318                         (rate->sdiv << PLL36XX_SDIV_SHIFT);
 319         __raw_writel(pll_con0, pll->con_reg);
 320
 321         pll_con1 &= ~(PLL36XX_KDIV_MASK << PLL36XX_KDIV_SHIFT);
 322         pll_con1 |= rate->kdiv << PLL36XX_KDIV_SHIFT;
 323         __raw_writel(pll_con1, pll->con_reg + 4);
 324
 325         /* wait_lock_time */
 326         do {
 327                 cpu_relax();
 328                 tmp = __raw_readl(pll->con_reg);
 329         } while (!(tmp & (1 << PLL36XX_LOCK_STAT_SHIFT)));
 330
 331         return 0;
 332 }
 333
 334 static const struct clk_ops samsung_pll36xx_clk_ops = {
 335         .recalc_rate = samsung_pll36xx_recalc_rate,
 336         .set_rate = samsung_pll36xx_set_rate,
 337         .round_rate = samsung_pll_round_rate,
 338 };
 339
 340 static const struct clk_ops samsung_pll36xx_clk_min_ops = {
 341         .recalc_rate = samsung_pll36xx_recalc_rate,
 342 };
 343
 344 /*
 345  * PLL45xx Clock Type
 346  */
 347 #define PLL4502_LOCK_FACTOR     400
 348 #define PLL4508_LOCK_FACTOR     240
 349
 350 #define PLL45XX_MDIV_MASK       (0x3FF)
 351 #define PLL45XX_PDIV_MASK       (0x3F)
 352 #define PLL45XX_SDIV_MASK       (0x7)
 353 #define PLL45XX_AFC_MASK        (0x1F)
 354 #define PLL45XX_MDIV_SHIFT      (16)
 355 #define PLL45XX_PDIV_SHIFT      (8)
 356 #define PLL45XX_SDIV_SHIFT      (0)
 357 #define PLL45XX_AFC_SHIFT       (0)
 358
 359 #define PLL45XX_ENABLE          BIT(31)
 360 #define PLL45XX_LOCKED          BIT(29)
 361
 362 static unsigned long samsung_pll45xx_recalc_rate(struct clk_hw *hw,
 363                                 unsigned long parent_rate)
 364 {
 365         struct samsung_clk_pll *pll = to_clk_pll(hw);
 366         u32 mdiv, pdiv, sdiv, pll_con;
 367         u64 fvco = parent_rate;
 368
 369         pll_con = __raw_readl(pll->con_reg);
 370         mdiv = (pll_con >> PLL45XX_MDIV_SHIFT) & PLL45XX_MDIV_MASK;
 371         pdiv = (pll_con >> PLL45XX_PDIV_SHIFT) & PLL45XX_PDIV_MASK;
 372         sdiv = (pll_con >> PLL45XX_SDIV_SHIFT) & PLL45XX_SDIV_MASK;
 373
 374         if (pll->type == pll_4508)
 375                 sdiv = sdiv - 1;
 376
 377         fvco *= mdiv;
 378         do_div(fvco, (pdiv << sdiv));
 379
 380         return (unsigned long)fvco;
 381 }
 382
 383 static bool samsung_pll45xx_mp_change(u32 pll_con0, u32 pll_con1,
 384                                 const struct samsung_pll_rate_table *rate)
 385 {
 386         u32 old_mdiv, old_pdiv, old_afc;
 387
 388         old_mdiv = (pll_con0 >> PLL45XX_MDIV_SHIFT) & PLL45XX_MDIV_MASK;
 389         old_pdiv = (pll_con0 >> PLL45XX_PDIV_SHIFT) & PLL45XX_PDIV_MASK;
 390         old_afc = (pll_con1 >> PLL45XX_AFC_SHIFT) & PLL45XX_AFC_MASK;
 391
 392         return (old_mdiv != rate->mdiv || old_pdiv != rate->pdiv
 393                 || old_afc != rate->afc);
 394 }
 395
 396 static int samsung_pll45xx_set_rate(struct clk_hw *hw, unsigned long drate,
 397                                         unsigned long prate)
 398 {
 399         struct samsung_clk_pll *pll = to_clk_pll(hw);
 400         const struct samsung_pll_rate_table *rate;
 401         u32 con0, con1;
 402         ktime_t start;
 403
 404         /* Get required rate settings from table */
 405         rate = samsung_get_pll_settings(pll, drate);
 406         if (!rate) {
 407                 pr_err("%s: Invalid rate : %lu for pll clk %s\n", __func__,
 408                         drate, __clk_get_name(hw->clk));
 409                 return -EINVAL;
 410         }
 411
 412         con0 = __raw_readl(pll->con_reg);
 413         con1 = __raw_readl(pll->con_reg + 0x4);
 414
 415         if (!(samsung_pll45xx_mp_change(con0, con1, rate))) {
 416                 /* If only s change, change just s value only*/
 417                 con0 &= ~(PLL45XX_SDIV_MASK << PLL45XX_SDIV_SHIFT);
 418                 con0 |= rate->sdiv << PLL45XX_SDIV_SHIFT;
 419                 __raw_writel(con0, pll->con_reg);
 420
 421                 return 0;
 422         }
 423
 424         /* Set PLL PMS values. */
 425         con0 &= ~((PLL45XX_MDIV_MASK << PLL45XX_MDIV_SHIFT) |
 426                         (PLL45XX_PDIV_MASK << PLL45XX_PDIV_SHIFT) |
 427                         (PLL45XX_SDIV_MASK << PLL45XX_SDIV_SHIFT));
 428         con0 |= (rate->mdiv << PLL45XX_MDIV_SHIFT) |
 429                         (rate->pdiv << PLL45XX_PDIV_SHIFT) |
 430                         (rate->sdiv << PLL45XX_SDIV_SHIFT);
 431
 432         /* Set PLL AFC value. */
 433         con1 = __raw_readl(pll->con_reg + 0x4);
 434         con1 &= ~(PLL45XX_AFC_MASK << PLL45XX_AFC_SHIFT);
 435         con1 |= (rate->afc << PLL45XX_AFC_SHIFT);
 436
 437         /* Set PLL lock time. */
 438         switch (pll->type) {
 439         case pll_4502:
 440                 __raw_writel(rate->pdiv * PLL4502_LOCK_FACTOR, pll->lock_reg);
 441                 break;
 442         case pll_4508:
 443                 __raw_writel(rate->pdiv * PLL4508_LOCK_FACTOR, pll->lock_reg);
 444                 break;
 445         default:
 446                 break;
 447         }
 448
 449         /* Set new configuration. */
 450         __raw_writel(con1, pll->con_reg + 0x4);
 451         __raw_writel(con0, pll->con_reg);
 452
 453         /* Wait for locking. */
 454         start = ktime_get();
 455         while (!(__raw_readl(pll->con_reg) & PLL45XX_LOCKED)) {
 456                 ktime_t delta = ktime_sub(ktime_get(), start);
 457
 458                 if (ktime_to_ms(delta) > PLL_TIMEOUT_MS) {
 459                         pr_err("%s: could not lock PLL %s\n",
 460                                         __func__, __clk_get_name(hw->clk));
 461                         return -EFAULT;
 462                 }
 463
 464                 cpu_relax();
 465         }
 466
 467         return 0;
 468 }
 469
 470 static const struct clk_ops samsung_pll45xx_clk_ops = {
 471         .recalc_rate = samsung_pll45xx_recalc_rate,
 472         .round_rate = samsung_pll_round_rate,
 473         .set_rate = samsung_pll45xx_set_rate,
 474 };
 475
 476 static const struct clk_ops samsung_pll45xx_clk_min_ops = {
 477         .recalc_rate = samsung_pll45xx_recalc_rate,
 478 };
 479
 480 /*
 481  * PLL46xx Clock Type
 482  */
 483 #define PLL46XX_LOCK_FACTOR     3000
 484
 485 #define PLL46XX_VSEL_MASK       (1)
 486 #define PLL46XX_MDIV_MASK       (0x1FF)
 487 #define PLL1460X_MDIV_MASK      (0x3FF)
 488
 489 #define PLL46XX_PDIV_MASK       (0x3F)
 490 #define PLL46XX_SDIV_MASK       (0x7)
 491 #define PLL46XX_VSEL_SHIFT      (27)
 492 #define PLL46XX_MDIV_SHIFT      (16)
 493 #define PLL46XX_PDIV_SHIFT      (8)
 494 #define PLL46XX_SDIV_SHIFT      (0)
 495
 496 #define PLL46XX_KDIV_MASK       (0xFFFF)
 497 #define PLL4650C_KDIV_MASK      (0xFFF)
 498 #define PLL46XX_KDIV_SHIFT      (0)
 499 #define PLL46XX_MFR_MASK        (0x3F)
 500 #define PLL46XX_MRR_MASK        (0x1F)
 501 #define PLL46XX_KDIV_SHIFT      (0)
 502 #define PLL46XX_MFR_SHIFT       (16)
 503 #define PLL46XX_MRR_SHIFT       (24)
 504
 505 #define PLL46XX_ENABLE          BIT(31)
 506 #define PLL46XX_LOCKED          BIT(29)
 507 #define PLL46XX_VSEL            BIT(27)
 508
 509 static unsigned long samsung_pll46xx_recalc_rate(struct clk_hw *hw,
 510                                 unsigned long parent_rate)
 511 {
 512         struct samsung_clk_pll *pll = to_clk_pll(hw);
 513         u32 mdiv, pdiv, sdiv, kdiv, pll_con0, pll_con1, shift;
 514         u64 fvco = parent_rate;
 515
 516         pll_con0 = __raw_readl(pll->con_reg);
 517         pll_con1 = __raw_readl(pll->con_reg + 4);
 518         mdiv = (pll_con0 >> PLL46XX_MDIV_SHIFT) & ((pll->type == pll_1460x) ?
 519                                 PLL1460X_MDIV_MASK : PLL46XX_MDIV_MASK);
 520         pdiv = (pll_con0 >> PLL46XX_PDIV_SHIFT) & PLL46XX_PDIV_MASK;
 521         sdiv = (pll_con0 >> PLL46XX_SDIV_SHIFT) & PLL46XX_SDIV_MASK;
 522         kdiv = pll->type == pll_4650c ? pll_con1 & PLL4650C_KDIV_MASK :
 523                                         pll_con1 & PLL46XX_KDIV_MASK;
 524
 525         shift = ((pll->type == pll_4600) || (pll->type == pll_1460x)) ? 16 : 10;
 526
 527         fvco *= (mdiv << shift) + kdiv;
 528         do_div(fvco, (pdiv << sdiv));
 529         fvco >>= shift;
 530
 531         return (unsigned long)fvco;
 532 }
 533
 534 static bool samsung_pll46xx_mpk_change(u32 pll_con0, u32 pll_con1,
 535                                 const struct samsung_pll_rate_table *rate)
 536 {
 537         u32 old_mdiv, old_pdiv, old_kdiv;
 538
 539         old_mdiv = (pll_con0 >> PLL46XX_MDIV_SHIFT) & PLL46XX_MDIV_MASK;
 540         old_pdiv = (pll_con0 >> PLL46XX_PDIV_SHIFT) & PLL46XX_PDIV_MASK;
 541         old_kdiv = (pll_con1 >> PLL46XX_KDIV_SHIFT) & PLL46XX_KDIV_MASK;
 542
 543         return (old_mdiv != rate->mdiv || old_pdiv != rate->pdiv
 544                 || old_kdiv != rate->kdiv);
 545 }
 546
 547 static int samsung_pll46xx_set_rate(struct clk_hw *hw, unsigned long drate,
 548                                         unsigned long prate)
 549 {
 550         struct samsung_clk_pll *pll = to_clk_pll(hw);
 551         const struct samsung_pll_rate_table *rate;
 552         u32 con0, con1, lock;
 553         ktime_t start;
 554
 555         /* Get required rate settings from table */
 556         rate = samsung_get_pll_settings(pll, drate);
 557         if (!rate) {
 558                 pr_err("%s: Invalid rate : %lu for pll clk %s\n", __func__,
 559                         drate, __clk_get_name(hw->clk));
 560                 return -EINVAL;
 561         }
 562
 563         con0 = __raw_readl(pll->con_reg);
 564         con1 = __raw_readl(pll->con_reg + 0x4);
 565
 566         if (!(samsung_pll46xx_mpk_change(con0, con1, rate))) {
 567                 /* If only s change, change just s value only*/
 568                 con0 &= ~(PLL46XX_SDIV_MASK << PLL46XX_SDIV_SHIFT);
 569                 con0 |= rate->sdiv << PLL46XX_SDIV_SHIFT;
 570                 __raw_writel(con0, pll->con_reg);
 571
 572                 return 0;
 573         }
 574
 575         /* Set PLL lock time. */
 576         lock = rate->pdiv * PLL46XX_LOCK_FACTOR;
 577         if (lock > 0xffff)
 578                 /* Maximum lock time bitfield is 16-bit. */
 579                 lock = 0xffff;
 580
 581         /* Set PLL PMS and VSEL values. */
 582         if (pll->type == pll_1460x) {
 583                 con0 &= ~((PLL1460X_MDIV_MASK << PLL46XX_MDIV_SHIFT) |
 584                         (PLL46XX_PDIV_MASK << PLL46XX_PDIV_SHIFT) |
 585                         (PLL46XX_SDIV_MASK << PLL46XX_SDIV_SHIFT));
 586         } else {
 587                 con0 &= ~((PLL46XX_MDIV_MASK << PLL46XX_MDIV_SHIFT) |
 588                         (PLL46XX_PDIV_MASK << PLL46XX_PDIV_SHIFT) |
 589                         (PLL46XX_SDIV_MASK << PLL46XX_SDIV_SHIFT) |
 590                         (PLL46XX_VSEL_MASK << PLL46XX_VSEL_SHIFT));
 591                 con0 |= rate->vsel << PLL46XX_VSEL_SHIFT;
 592         }
 593
 594         con0 |= (rate->mdiv << PLL46XX_MDIV_SHIFT) |
 595                         (rate->pdiv << PLL46XX_PDIV_SHIFT) |
 596                         (rate->sdiv << PLL46XX_SDIV_SHIFT);
 597
 598         /* Set PLL K, MFR and MRR values. */
 599         con1 = __raw_readl(pll->con_reg + 0x4);
 600         con1 &= ~((PLL46XX_KDIV_MASK << PLL46XX_KDIV_SHIFT) |
 601                         (PLL46XX_MFR_MASK << PLL46XX_MFR_SHIFT) |
 602                         (PLL46XX_MRR_MASK << PLL46XX_MRR_SHIFT));
 603         con1 |= (rate->kdiv << PLL46XX_KDIV_SHIFT) |
 604                         (rate->mfr << PLL46XX_MFR_SHIFT) |
 605                         (rate->mrr << PLL46XX_MRR_SHIFT);
 606
 607         /* Write configuration to PLL */
 608         __raw_writel(lock, pll->lock_reg);
 609         __raw_writel(con0, pll->con_reg);
 610         __raw_writel(con1, pll->con_reg + 0x4);
 611
 612         /* Wait for locking. */
 613         start = ktime_get();
 614         while (!(__raw_readl(pll->con_reg) & PLL46XX_LOCKED)) {
 615                 ktime_t delta = ktime_sub(ktime_get(), start);
 616
 617                 if (ktime_to_ms(delta) > PLL_TIMEOUT_MS) {
 618                         pr_err("%s: could not lock PLL %s\n",
 619                                         __func__, __clk_get_name(hw->clk));
 620                         return -EFAULT;
 621                 }
 622
 623                 cpu_relax();
 624         }
 625
 626         return 0;
 627 }
 628
 629 static const struct clk_ops samsung_pll46xx_clk_ops = {
 630         .recalc_rate = samsung_pll46xx_recalc_rate,
 631         .round_rate = samsung_pll_round_rate,
 632         .set_rate = samsung_pll46xx_set_rate,
 633 };
 634
 635 static const struct clk_ops samsung_pll46xx_clk_min_ops = {
 636         .recalc_rate = samsung_pll46xx_recalc_rate,
 637 };
 638
 639 /*
 640  * PLL6552 Clock Type
 641  */
 642
 643 #define PLL6552_MDIV_MASK       0x3ff
 644 #define PLL6552_PDIV_MASK       0x3f
 645 #define PLL6552_SDIV_MASK       0x7
 646 #define PLL6552_MDIV_SHIFT      16
 647 #define PLL6552_MDIV_SHIFT_2416 14
 648 #define PLL6552_PDIV_SHIFT      8
 649 #define PLL6552_PDIV_SHIFT_2416 5
 650 #define PLL6552_SDIV_SHIFT      0
 651
 652 static unsigned long samsung_pll6552_recalc_rate(struct clk_hw *hw,
 653                                                 unsigned long parent_rate)
 654 {
 655         struct samsung_clk_pll *pll = to_clk_pll(hw);
 656         u32 mdiv, pdiv, sdiv, pll_con;
 657         u64 fvco = parent_rate;
 658
 659         pll_con = __raw_readl(pll->con_reg);
 660         if (pll->type == pll_6552_s3c2416) {
 661                 mdiv = (pll_con >> PLL6552_MDIV_SHIFT_2416) & PLL6552_MDIV_MASK;
 662                 pdiv = (pll_con >> PLL6552_PDIV_SHIFT_2416) & PLL6552_PDIV_MASK;
 663         } else {
 664                 mdiv = (pll_con >> PLL6552_MDIV_SHIFT) & PLL6552_MDIV_MASK;
 665                 pdiv = (pll_con >> PLL6552_PDIV_SHIFT) & PLL6552_PDIV_MASK;
 666         }
 667         sdiv = (pll_con >> PLL6552_SDIV_SHIFT) & PLL6552_SDIV_MASK;
 668
 669         fvco *= mdiv;
 670         do_div(fvco, (pdiv << sdiv));
 671
 672         return (unsigned long)fvco;
 673 }
 674
 675 static const struct clk_ops samsung_pll6552_clk_ops = {
 676         .recalc_rate = samsung_pll6552_recalc_rate,
 677 };
 678
 679 /*
 680  * PLL6553 Clock Type
 681  */
 682
 683 #define PLL6553_MDIV_MASK       0xff
 684 #define PLL6553_PDIV_MASK       0x3f
 685 #define PLL6553_SDIV_MASK       0x7
 686 #define PLL6553_KDIV_MASK       0xffff
 687 #define PLL6553_MDIV_SHIFT      16
 688 #define PLL6553_PDIV_SHIFT      8
 689 #define PLL6553_SDIV_SHIFT      0
 690 #define PLL6553_KDIV_SHIFT      0
 691
 692 static unsigned long samsung_pll6553_recalc_rate(struct clk_hw *hw,
 693                                                 unsigned long parent_rate)
 694 {
 695         struct samsung_clk_pll *pll = to_clk_pll(hw);
 696         u32 mdiv, pdiv, sdiv, kdiv, pll_con0, pll_con1;
 697         u64 fvco = parent_rate;
 698
 699         pll_con0 = __raw_readl(pll->con_reg);
 700         pll_con1 = __raw_readl(pll->con_reg + 0x4);
 701         mdiv = (pll_con0 >> PLL6553_MDIV_SHIFT) & PLL6553_MDIV_MASK;
 702         pdiv = (pll_con0 >> PLL6553_PDIV_SHIFT) & PLL6553_PDIV_MASK;
 703         sdiv = (pll_con0 >> PLL6553_SDIV_SHIFT) & PLL6553_SDIV_MASK;
 704         kdiv = (pll_con1 >> PLL6553_KDIV_SHIFT) & PLL6553_KDIV_MASK;
 705
 706         fvco *= (mdiv << 16) + kdiv;
 707         do_div(fvco, (pdiv << sdiv));
 708         fvco >>= 16;
 709
 710         return (unsigned long)fvco;
 711 }
 712
 713 static const struct clk_ops samsung_pll6553_clk_ops = {
 714         .recalc_rate = samsung_pll6553_recalc_rate,
 715 };
 716
 717 /*
 718  * PLL Clock Type of S3C24XX before S3C2443
 719  */
 720
 721 #define PLLS3C2410_MDIV_MASK            (0xff)
 722 #define PLLS3C2410_PDIV_MASK            (0x1f)
 723 #define PLLS3C2410_SDIV_MASK            (0x3)
 724 #define PLLS3C2410_MDIV_SHIFT           (12)
 725 #define PLLS3C2410_PDIV_SHIFT           (4)
 726 #define PLLS3C2410_SDIV_SHIFT           (0)
 727
 728 #define PLLS3C2410_ENABLE_REG_OFFSET    0x10
 729
 730 static unsigned long samsung_s3c2410_pll_recalc_rate(struct clk_hw *hw,
 731                                         unsigned long parent_rate)
 732 {
 733         struct samsung_clk_pll *pll = to_clk_pll(hw);
 734         u32 pll_con, mdiv, pdiv, sdiv;
 735         u64 fvco = parent_rate;
 736
 737         pll_con = __raw_readl(pll->con_reg);
 738         mdiv = (pll_con >> PLLS3C2410_MDIV_SHIFT) & PLLS3C2410_MDIV_MASK;
 739         pdiv = (pll_con >> PLLS3C2410_PDIV_SHIFT) & PLLS3C2410_PDIV_MASK;
 740         sdiv = (pll_con >> PLLS3C2410_SDIV_SHIFT) & PLLS3C2410_SDIV_MASK;
 741
 742         fvco *= (mdiv + 8);
 743         do_div(fvco, (pdiv + 2) << sdiv);
 744
 745         return (unsigned int)fvco;
 746 }
 747
 748 static unsigned long samsung_s3c2440_mpll_recalc_rate(struct clk_hw *hw,
 749                                         unsigned long parent_rate)
 750 {
 751         struct samsung_clk_pll *pll = to_clk_pll(hw);
 752         u32 pll_con, mdiv, pdiv, sdiv;
 753         u64 fvco = parent_rate;
 754
 755         pll_con = __raw_readl(pll->con_reg);
 756         mdiv = (pll_con >> PLLS3C2410_MDIV_SHIFT) & PLLS3C2410_MDIV_MASK;
 757         pdiv = (pll_con >> PLLS3C2410_PDIV_SHIFT) & PLLS3C2410_PDIV_MASK;
 758         sdiv = (pll_con >> PLLS3C2410_SDIV_SHIFT) & PLLS3C2410_SDIV_MASK;
 759
 760         fvco *= (2 * (mdiv + 8));
 761         do_div(fvco, (pdiv + 2) << sdiv);
 762
 763         return (unsigned int)fvco;
 764 }
 765
 766 static int samsung_s3c2410_pll_set_rate(struct clk_hw *hw, unsigned long drate,
 767                                         unsigned long prate)
 768 {
 769         struct samsung_clk_pll *pll = to_clk_pll(hw);
 770         const struct samsung_pll_rate_table *rate;
 771         u32 tmp;
 772
 773         /* Get required rate settings from table */
 774         rate = samsung_get_pll_settings(pll, drate);
 775         if (!rate) {
 776                 pr_err("%s: Invalid rate : %lu for pll clk %s\n", __func__,
 777                         drate, __clk_get_name(hw->clk));
 778                 return -EINVAL;
 779         }
 780
 781         tmp = __raw_readl(pll->con_reg);
 782
 783         /* Change PLL PMS values */
 784         tmp &= ~((PLLS3C2410_MDIV_MASK << PLLS3C2410_MDIV_SHIFT) |
 785                         (PLLS3C2410_PDIV_MASK << PLLS3C2410_PDIV_SHIFT) |
 786                         (PLLS3C2410_SDIV_MASK << PLLS3C2410_SDIV_SHIFT));
 787         tmp |= (rate->mdiv << PLLS3C2410_MDIV_SHIFT) |
 788                         (rate->pdiv << PLLS3C2410_PDIV_SHIFT) |
 789                         (rate->sdiv << PLLS3C2410_SDIV_SHIFT);
 790         __raw_writel(tmp, pll->con_reg);
 791
 792         /* Time to settle according to the manual */
 793         udelay(300);
 794
 795         return 0;
 796 }
 797
 798 static int samsung_s3c2410_pll_enable(struct clk_hw *hw, int bit, bool enable)
 799 {
 800         struct samsung_clk_pll *pll = to_clk_pll(hw);
 801         u32 pll_en = __raw_readl(pll->lock_reg + PLLS3C2410_ENABLE_REG_OFFSET);
 802         u32 pll_en_orig = pll_en;
 803
 804         if (enable)
 805                 pll_en &= ~BIT(bit);
 806         else
 807                 pll_en |= BIT(bit);
 808
 809         __raw_writel(pll_en, pll->lock_reg + PLLS3C2410_ENABLE_REG_OFFSET);
 810
 811         /* if we started the UPLL, then allow to settle */
 812         if (enable && (pll_en_orig & BIT(bit)))
 813                 udelay(300);
 814
 815         return 0;
 816 }
 817
 818 static int samsung_s3c2410_mpll_enable(struct clk_hw *hw)
 819 {
 820         return samsung_s3c2410_pll_enable(hw, 5, true);
 821 }
 822
 823 static void samsung_s3c2410_mpll_disable(struct clk_hw *hw)
 824 {
 825         samsung_s3c2410_pll_enable(hw, 5, false);
 826 }
 827
 828 static int samsung_s3c2410_upll_enable(struct clk_hw *hw)
 829 {
 830         return samsung_s3c2410_pll_enable(hw, 7, true);
 831 }
 832
 833 static void samsung_s3c2410_upll_disable(struct clk_hw *hw)
 834 {
 835         samsung_s3c2410_pll_enable(hw, 7, false);
 836 }
 837
 838 static const struct clk_ops samsung_s3c2410_mpll_clk_min_ops = {
 839         .recalc_rate = samsung_s3c2410_pll_recalc_rate,
 840         .enable = samsung_s3c2410_mpll_enable,
 841         .disable = samsung_s3c2410_mpll_disable,
 842 };
 843
 844 static const struct clk_ops samsung_s3c2410_upll_clk_min_ops = {
 845         .recalc_rate = samsung_s3c2410_pll_recalc_rate,
 846         .enable = samsung_s3c2410_upll_enable,
 847         .disable = samsung_s3c2410_upll_disable,
 848 };
 849
 850 static const struct clk_ops samsung_s3c2440_mpll_clk_min_ops = {
 851         .recalc_rate = samsung_s3c2440_mpll_recalc_rate,
 852         .enable = samsung_s3c2410_mpll_enable,
 853         .disable = samsung_s3c2410_mpll_disable,
 854 };
 855
 856 static const struct clk_ops samsung_s3c2410_mpll_clk_ops = {
 857         .recalc_rate = samsung_s3c2410_pll_recalc_rate,
 858         .enable = samsung_s3c2410_mpll_enable,
 859         .disable = samsung_s3c2410_mpll_disable,
 860         .round_rate = samsung_pll_round_rate,
 861         .set_rate = samsung_s3c2410_pll_set_rate,
 862 };
 863
 864 static const struct clk_ops samsung_s3c2410_upll_clk_ops = {
 865         .recalc_rate = samsung_s3c2410_pll_recalc_rate,
 866         .enable = samsung_s3c2410_upll_enable,
 867         .disable = samsung_s3c2410_upll_disable,
 868         .round_rate = samsung_pll_round_rate,
 869         .set_rate = samsung_s3c2410_pll_set_rate,
 870 };
 871
 872 static const struct clk_ops samsung_s3c2440_mpll_clk_ops = {
 873         .recalc_rate = samsung_s3c2440_mpll_recalc_rate,
 874         .enable = samsung_s3c2410_mpll_enable,
 875         .disable = samsung_s3c2410_mpll_disable,
 876         .round_rate = samsung_pll_round_rate,
 877         .set_rate = samsung_s3c2410_pll_set_rate,
 878 };
 879
 880 /*
 881  * PLL2550x Clock Type
 882  */
 883
 884 #define PLL2550X_R_MASK       (0x1)
 885 #define PLL2550X_P_MASK       (0x3F)
 886 #define PLL2550X_M_MASK       (0x3FF)
 887 #define PLL2550X_S_MASK       (0x7)
 888 #define PLL2550X_R_SHIFT      (20)
 889 #define PLL2550X_P_SHIFT      (14)
 890 #define PLL2550X_M_SHIFT      (4)
 891 #define PLL2550X_S_SHIFT      (0)
 892
 893 struct samsung_clk_pll2550x {
 894         struct clk_hw           hw;
 895         const void __iomem      *reg_base;
 896         unsigned long           offset;
 897 };
 898
 899 #define to_clk_pll2550x(_hw) container_of(_hw, struct samsung_clk_pll2550x, hw)
 900
 901 static unsigned long samsung_pll2550x_recalc_rate(struct clk_hw *hw,
 902                                 unsigned long parent_rate)
 903 {
 904         struct samsung_clk_pll2550x *pll = to_clk_pll2550x(hw);
 905         u32 r, p, m, s, pll_stat;
 906         u64 fvco = parent_rate;
 907
 908         pll_stat = __raw_readl(pll->reg_base + pll->offset * 3);
 909         r = (pll_stat >> PLL2550X_R_SHIFT) & PLL2550X_R_MASK;
 910         if (!r)
 911                 return 0;
 912         p = (pll_stat >> PLL2550X_P_SHIFT) & PLL2550X_P_MASK;
 913         m = (pll_stat >> PLL2550X_M_SHIFT) & PLL2550X_M_MASK;
 914         s = (pll_stat >> PLL2550X_S_SHIFT) & PLL2550X_S_MASK;
 915
 916         fvco *= m;
 917         do_div(fvco, (p << s));
 918
 919         return (unsigned long)fvco;
 920 }
 921
 922 static const struct clk_ops samsung_pll2550x_clk_ops = {
 923         .recalc_rate = samsung_pll2550x_recalc_rate,
 924 };
 925
 926 struct clk * __init samsung_clk_register_pll2550x(const char *name,
 927                         const char *pname, const void __iomem *reg_base,
 928                         const unsigned long offset)
 929 {
 930         struct samsung_clk_pll2550x *pll;
 931         struct clk *clk;
 932         struct clk_init_data init;
 933
 934         pll = kzalloc(sizeof(*pll), GFP_KERNEL);
 935         if (!pll) {
 936                 pr_err("%s: could not allocate pll clk %s\n", __func__, name);
 937                 return NULL;
 938         }
 939
 940         init.name = name;
 941         init.ops = &samsung_pll2550x_clk_ops;
 942         init.flags = CLK_GET_RATE_NOCACHE;
 943         init.parent_names = &pname;
 944         init.num_parents = 1;
 945
 946         pll->hw.init = &init;
 947         pll->reg_base = reg_base;
 948         pll->offset = offset;
 949
 950         clk = clk_register(NULL, &pll->hw);
 951         if (IS_ERR(clk)) {
 952                 pr_err("%s: failed to register pll clock %s\n", __func__,
 953                                 name);
 954                 kfree(pll);
 955         }
 956
 957         if (clk_register_clkdev(clk, name, NULL))
 958                 pr_err("%s: failed to register lookup for %s", __func__, name);
 959
 960         return clk;
 961 }
 962
 963 /*
 964  * PLL2550xx Clock Type
 965  */
 966
 967 /* Maximum lock time can be 270 * PDIV cycles */
 968 #define PLL2550XX_LOCK_FACTOR 270
 969
 970 #define PLL2550XX_M_MASK                0x3FF
 971 #define PLL2550XX_P_MASK                0x3F
 972 #define PLL2550XX_S_MASK                0x7
 973 #define PLL2550XX_LOCK_STAT_MASK        0x1
 974 #define PLL2550XX_M_SHIFT               9
 975 #define PLL2550XX_P_SHIFT               3
 976 #define PLL2550XX_S_SHIFT               0
 977 #define PLL2550XX_LOCK_STAT_SHIFT       21
 978
 979 static unsigned long samsung_pll2550xx_recalc_rate(struct clk_hw *hw,
 980                                 unsigned long parent_rate)
 981 {
 982         struct samsung_clk_pll *pll = to_clk_pll(hw);
 983         u32 mdiv, pdiv, sdiv, pll_con;
 984         u64 fvco = parent_rate;
 985
 986         pll_con = __raw_readl(pll->con_reg);
 987         mdiv = (pll_con >> PLL2550XX_M_SHIFT) & PLL2550XX_M_MASK;
 988         pdiv = (pll_con >> PLL2550XX_P_SHIFT) & PLL2550XX_P_MASK;
 989         sdiv = (pll_con >> PLL2550XX_S_SHIFT) & PLL2550XX_S_MASK;
 990
 991         fvco *= mdiv;
 992         do_div(fvco, (pdiv << sdiv));
 993
 994         return (unsigned long)fvco;
 995 }
 996
 997 static inline bool samsung_pll2550xx_mp_change(u32 mdiv, u32 pdiv, u32 pll_con)
 998 {
 999         u32 old_mdiv, old_pdiv;
1000
1001         old_mdiv = (pll_con >> PLL2550XX_M_SHIFT) & PLL2550XX_M_MASK;
1002         old_pdiv = (pll_con >> PLL2550XX_P_SHIFT) & PLL2550XX_P_MASK;
1003
1004         return mdiv != old_mdiv || pdiv != old_pdiv;
1005 }
1006
1007 static int samsung_pll2550xx_set_rate(struct clk_hw *hw, unsigned long drate,
1008                                         unsigned long prate)
1009 {
1010         struct samsung_clk_pll *pll = to_clk_pll(hw);
1011         const struct samsung_pll_rate_table *rate;
1012         u32 tmp;
1013
1014         /* Get required rate settings from table */
1015         rate = samsung_get_pll_settings(pll, drate);
1016         if (!rate) {
1017                 pr_err("%s: Invalid rate : %lu for pll clk %s\n", __func__,
1018                         drate, __clk_get_name(hw->clk));
1019                 return -EINVAL;
1020         }
1021
1022         tmp = __raw_readl(pll->con_reg);
1023
1024         if (!(samsung_pll2550xx_mp_change(rate->mdiv, rate->pdiv, tmp))) {
1025                 /* If only s change, change just s value only*/
1026                 tmp &= ~(PLL2550XX_S_MASK << PLL2550XX_S_SHIFT);
1027                 tmp |= rate->sdiv << PLL2550XX_S_SHIFT;
1028                 __raw_writel(tmp, pll->con_reg);
1029
1030                 return 0;
1031         }
1032
1033         /* Set PLL lock time. */
1034         __raw_writel(rate->pdiv * PLL2550XX_LOCK_FACTOR, pll->lock_reg);
1035
1036         /* Change PLL PMS values */
1037         tmp &= ~((PLL2550XX_M_MASK << PLL2550XX_M_SHIFT) |
1038                         (PLL2550XX_P_MASK << PLL2550XX_P_SHIFT) |
1039                         (PLL2550XX_S_MASK << PLL2550XX_S_SHIFT));
1040         tmp |= (rate->mdiv << PLL2550XX_M_SHIFT) |
1041                         (rate->pdiv << PLL2550XX_P_SHIFT) |
1042                         (rate->sdiv << PLL2550XX_S_SHIFT);
1043         __raw_writel(tmp, pll->con_reg);
1044
1045         /* wait_lock_time */
1046         do {
1047                 cpu_relax();
1048                 tmp = __raw_readl(pll->con_reg);
1049         } while (!(tmp & (PLL2550XX_LOCK_STAT_MASK
1050                         << PLL2550XX_LOCK_STAT_SHIFT)));
1051
1052         return 0;
1053 }
1054
1055 static const struct clk_ops samsung_pll2550xx_clk_ops = {
1056         .recalc_rate = samsung_pll2550xx_recalc_rate,
1057         .round_rate = samsung_pll_round_rate,
1058         .set_rate = samsung_pll2550xx_set_rate,
1059 };
1060
1061 static const struct clk_ops samsung_pll2550xx_clk_min_ops = {
1062         .recalc_rate = samsung_pll2550xx_recalc_rate,
1063 };
1064
1065 /*
1066  * PLL2650XX Clock Type
1067  */
1068
1069 /* Maximum lock time can be 3000 * PDIV cycles */
1070 #define PLL2650XX_LOCK_FACTOR 3000
1071
1072 #define PLL2650XX_MDIV_SHIFT            9
1073 #define PLL2650XX_PDIV_SHIFT            3
1074 #define PLL2650XX_SDIV_SHIFT            0
1075 #define PLL2650XX_KDIV_SHIFT            0
1076 #define PLL2650XX_MDIV_MASK             0x1ff
1077 #define PLL2650XX_PDIV_MASK             0x3f
1078 #define PLL2650XX_SDIV_MASK             0x7
1079 #define PLL2650XX_KDIV_MASK             0xffff
1080 #define PLL2650XX_PLL_ENABLE_SHIFT      23
1081 #define PLL2650XX_PLL_LOCKTIME_SHIFT    21
1082 #define PLL2650XX_PLL_FOUTMASK_SHIFT    31
1083
1084 static unsigned long samsung_pll2650xx_recalc_rate(struct clk_hw *hw,
1085                                 unsigned long parent_rate)
1086 {
1087         struct samsung_clk_pll *pll = to_clk_pll(hw);
1088         u32 mdiv, pdiv, sdiv, pll_con0, pll_con2;
1089         s16 kdiv;
1090         u64 fvco = parent_rate;
1091
1092         pll_con0 = __raw_readl(pll->con_reg);
1093         pll_con2 = __raw_readl(pll->con_reg + 8);
1094         mdiv = (pll_con0 >> PLL2650XX_MDIV_SHIFT) & PLL2650XX_MDIV_MASK;
1095         pdiv = (pll_con0 >> PLL2650XX_PDIV_SHIFT) & PLL2650XX_PDIV_MASK;
1096         sdiv = (pll_con0 >> PLL2650XX_SDIV_SHIFT) & PLL2650XX_SDIV_MASK;
1097         kdiv = (s16)(pll_con2 & PLL2650XX_KDIV_MASK);
1098
1099         fvco *= (mdiv << 16) + kdiv;
1100         do_div(fvco, (pdiv << sdiv));
1101         fvco >>= 16;
1102
1103         return (unsigned long)fvco;
1104 }
1105
1106 static int samsung_pll2650xx_set_rate(struct clk_hw *hw, unsigned long drate,
1107                                         unsigned long parent_rate)
1108 {
1109         struct samsung_clk_pll *pll = to_clk_pll(hw);
1110         u32 tmp, pll_con0, pll_con2;
1111         const struct samsung_pll_rate_table *rate;
1112
1113         rate = samsung_get_pll_settings(pll, drate);
1114         if (!rate) {
1115                 pr_err("%s: Invalid rate : %lu for pll clk %s\n", __func__,
1116                         drate, __clk_get_name(hw->clk));
1117                 return -EINVAL;
1118         }
1119
1120         pll_con0 = __raw_readl(pll->con_reg);
1121         pll_con2 = __raw_readl(pll->con_reg + 8);
1122
1123          /* Change PLL PMS values */
1124         pll_con0 &= ~(PLL2650XX_MDIV_MASK << PLL2650XX_MDIV_SHIFT |
1125                         PLL2650XX_PDIV_MASK << PLL2650XX_PDIV_SHIFT |
1126                         PLL2650XX_SDIV_MASK << PLL2650XX_SDIV_SHIFT);
1127         pll_con0 |= rate->mdiv << PLL2650XX_MDIV_SHIFT;
1128         pll_con0 |= rate->pdiv << PLL2650XX_PDIV_SHIFT;
1129         pll_con0 |= rate->sdiv << PLL2650XX_SDIV_SHIFT;
1130         pll_con0 |= 1 << PLL2650XX_PLL_ENABLE_SHIFT;
1131         pll_con0 |= 1 << PLL2650XX_PLL_FOUTMASK_SHIFT;
1132
1133         pll_con2 &= ~(PLL2650XX_KDIV_MASK << PLL2650XX_KDIV_SHIFT);
1134         pll_con2 |= ((~(rate->kdiv) + 1) & PLL2650XX_KDIV_MASK)
1135                         << PLL2650XX_KDIV_SHIFT;
1136
1137         /* Set PLL lock time. */
1138         __raw_writel(PLL2650XX_LOCK_FACTOR * rate->pdiv, pll->lock_reg);
1139
1140         __raw_writel(pll_con0, pll->con_reg);
1141         __raw_writel(pll_con2, pll->con_reg + 8);
1142
1143         do {
1144                 tmp = __raw_readl(pll->con_reg);
1145         } while (!(tmp & (0x1 << PLL2650XX_PLL_LOCKTIME_SHIFT)));
1146
1147         return 0;
1148 }
1149
1150 static const struct clk_ops samsung_pll2650xx_clk_ops = {
1151         .recalc_rate = samsung_pll2650xx_recalc_rate,
1152         .set_rate = samsung_pll2650xx_set_rate,
1153         .round_rate = samsung_pll_round_rate,
1154 };
1155
1156 static const struct clk_ops samsung_pll2650xx_clk_min_ops = {
1157         .recalc_rate = samsung_pll2650xx_recalc_rate,
1158 };
1159
1160 static void __init _samsung_clk_register_pll(struct samsung_clk_provider *ctx,
1161                                 const struct samsung_pll_clock *pll_clk,
1162                                 void __iomem *base)
1163 {
1164         struct samsung_clk_pll *pll;
1165         struct clk *clk;
1166         struct clk_init_data init;
1167         int ret, len;
1168
1169         pll = kzalloc(sizeof(*pll), GFP_KERNEL);
1170         if (!pll) {
1171                 pr_err("%s: could not allocate pll clk %s\n",
1172                         __func__, pll_clk->name);
1173                 return;
1174         }
1175
1176         init.name = pll_clk->name;
1177         init.flags = pll_clk->flags;
1178         init.parent_names = &pll_clk->parent_name;
1179         init.num_parents = 1;
1180
1181         if (pll_clk->rate_table) {
1182                 /* find count of rates in rate_table */
1183                 for (len = 0; pll_clk->rate_table[len].rate != 0; )
1184                         len++;
1185
1186                 pll->rate_count = len;
1187                 pll->rate_table = kmemdup(pll_clk->rate_table,
1188                                         pll->rate_count *
1189                                         sizeof(struct samsung_pll_rate_table),
1190                                         GFP_KERNEL);
1191                 WARN(!pll->rate_table,
1192                         "%s: could not allocate rate table for %s\n",
1193                         __func__, pll_clk->name);
1194         }
1195
1196         switch (pll_clk->type) {
1197         case pll_2126:
1198                 init.ops = &samsung_pll2126_clk_ops;
1199                 break;
1200         case pll_3000:
1201                 init.ops = &samsung_pll3000_clk_ops;
1202                 break;
1203         /* clk_ops for 35xx and 2550 are similar */
1204         case pll_35xx:
1205         case pll_2550:
1206         case pll_1450x:
1207         case pll_1451x:
1208         case pll_1452x:
1209                 if (!pll->rate_table)
1210                         init.ops = &samsung_pll35xx_clk_min_ops;
1211                 else
1212                         init.ops = &samsung_pll35xx_clk_ops;
1213                 break;
1214         case pll_4500:
1215                 init.ops = &samsung_pll45xx_clk_min_ops;
1216                 break;
1217         case pll_4502:
1218         case pll_4508:
1219                 if (!pll->rate_table)
1220                         init.ops = &samsung_pll45xx_clk_min_ops;
1221                 else
1222                         init.ops = &samsung_pll45xx_clk_ops;
1223                 break;
1224         /* clk_ops for 36xx and 2650 are similar */
1225         case pll_36xx:
1226         case pll_2650:
1227                 if (!pll->rate_table)
1228                         init.ops = &samsung_pll36xx_clk_min_ops;
1229                 else
1230                         init.ops = &samsung_pll36xx_clk_ops;
1231                 break;
1232         case pll_6552:
1233         case pll_6552_s3c2416:
1234                 init.ops = &samsung_pll6552_clk_ops;
1235                 break;
1236         case pll_6553:
1237                 init.ops = &samsung_pll6553_clk_ops;
1238                 break;
1239         case pll_4600:
1240         case pll_4650:
1241         case pll_4650c:
1242         case pll_1460x:
1243                 if (!pll->rate_table)
1244                         init.ops = &samsung_pll46xx_clk_min_ops;
1245                 else
1246                         init.ops = &samsung_pll46xx_clk_ops;
1247                 break;
1248         case pll_s3c2410_mpll:
1249                 if (!pll->rate_table)
1250                         init.ops = &samsung_s3c2410_mpll_clk_min_ops;
1251                 else
1252                         init.ops = &samsung_s3c2410_mpll_clk_ops;
1253                 break;
1254         case pll_s3c2410_upll:
1255                 if (!pll->rate_table)
1256                         init.ops = &samsung_s3c2410_upll_clk_min_ops;
1257                 else
1258                         init.ops = &samsung_s3c2410_upll_clk_ops;
1259                 break;
1260         case pll_s3c2440_mpll:
1261                 if (!pll->rate_table)
1262                         init.ops = &samsung_s3c2440_mpll_clk_min_ops;
1263                 else
1264                         init.ops = &samsung_s3c2440_mpll_clk_ops;
1265                 break;
1266         case pll_2550xx:
1267                 if (!pll->rate_table)
1268                         init.ops = &samsung_pll2550xx_clk_min_ops;
1269                 else
1270                         init.ops = &samsung_pll2550xx_clk_ops;
1271                 break;
1272         case pll_2650xx:
1273                 if (!pll->rate_table)
1274                         init.ops = &samsung_pll2650xx_clk_min_ops;
1275                 else
1276                         init.ops = &samsung_pll2650xx_clk_ops;
1277                 break;
1278         default:
1279                 pr_warn("%s: Unknown pll type for pll clk %s\n",
1280                         __func__, pll_clk->name);
1281         }
1282
1283         pll->hw.init = &init;
1284         pll->type = pll_clk->type;
1285         pll->lock_reg = base + pll_clk->lock_offset;
1286         pll->con_reg = base + pll_clk->con_offset;
1287
1288         clk = clk_register(NULL, &pll->hw);
1289         if (IS_ERR(clk)) {
1290                 pr_err("%s: failed to register pll clock %s : %ld\n",
1291                         __func__, pll_clk->name, PTR_ERR(clk));
1292                 kfree(pll);
1293                 return;
1294         }
1295
1296         samsung_clk_add_lookup(ctx, clk, pll_clk->id);
1297
1298         if (!pll_clk->alias)
1299                 return;
1300
1301         ret = clk_register_clkdev(clk, pll_clk->alias, pll_clk->dev_name);
1302         if (ret)
1303                 pr_err("%s: failed to register lookup for %s : %d",
1304                         __func__, pll_clk->name, ret);
1305 }
1306
1307 void __init samsung_clk_register_pll(struct samsung_clk_provider *ctx,
1308                         const struct samsung_pll_clock *pll_list,
1309                         unsigned int nr_pll, void __iomem *base)
1310 {
1311         int cnt;
1312
1313         for (cnt = 0; cnt < nr_pll; cnt++)
1314                 _samsung_clk_register_pll(ctx, &pll_list[cnt], base);
1315 }