drivers/gpu/drm/meson/meson_vclk.c

   1 /*
   2  * Copyright (C) 2016 BayLibre, SAS
   3  * Author: Neil Armstrong <narmstrong@baylibre.com>
   4  * Copyright (C) 2015 Amlogic, Inc. All rights reserved.
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation; either version 2 of the
   9  * License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <linux/kernel.h>
  21 #include <linux/module.h>
  22 #include <drm/drmP.h>
  23 #include "meson_drv.h"
  24 #include "meson_vclk.h"
  25
  26 /**
  27  * DOC: Video Clocks
  28  *
  29  * VCLK is the "Pixel Clock" frequency generator from a dedicated PLL.
  30  * We handle the following encodings :
  31  *
  32  * - CVBS 27MHz generator via the VCLK2 to the VENCI and VDAC blocks
  33  * - HDMI Pixel Clocks generation
  34  *
  35  * What is missing :
  36  *
  37  * - Genenate Pixel clocks for 2K/4K 10bit formats
  38  *
  39  * Clock generator scheme :
  40  *
  41  * .. code::
  42  *
  43  *    __________   _________            _____
  44  *   |          | |         |          |     |--ENCI
  45  *   | HDMI PLL |-| PLL_DIV |--- VCLK--|     |--ENCL
  46  *   |__________| |_________| \        | MUX |--ENCP
  47  *                             --VCLK2-|     |--VDAC
  48  *                                     |_____|--HDMI-TX
  49  *
  50  * Final clocks can take input for either VCLK or VCLK2, but
  51  * VCLK is the preferred path for HDMI clocking and VCLK2 is the
  52  * preferred path for CVBS VDAC clocking.
  53  *
  54  * VCLK and VCLK2 have fixed divided clocks paths for /1, /2, /4, /6 or /12.
  55  *
  56  * The PLL_DIV can achieve an additional fractional dividing like
  57  * 1.5, 3.5, 3.75... to generate special 2K and 4K 10bit clocks.
  58  */
  59
  60 /* HHI Registers */
  61 #define HHI_VID_PLL_CLK_DIV     0x1a0 /* 0x68 offset in data sheet */
  62 #define VID_PLL_EN              BIT(19)
  63 #define VID_PLL_BYPASS          BIT(18)
  64 #define VID_PLL_PRESET          BIT(15)
  65 #define HHI_VIID_CLK_DIV        0x128 /* 0x4a offset in data sheet */
  66 #define VCLK2_DIV_MASK          0xff
  67 #define VCLK2_DIV_EN            BIT(16)
  68 #define VCLK2_DIV_RESET         BIT(17)
  69 #define CTS_VDAC_SEL_MASK       (0xf << 28)
  70 #define CTS_VDAC_SEL_SHIFT      28
  71 #define HHI_VIID_CLK_CNTL       0x12c /* 0x4b offset in data sheet */
  72 #define VCLK2_EN                BIT(19)
  73 #define VCLK2_SEL_MASK          (0x7 << 16)
  74 #define VCLK2_SEL_SHIFT         16
  75 #define VCLK2_SOFT_RESET        BIT(15)
  76 #define VCLK2_DIV1_EN           BIT(0)
  77 #define HHI_VID_CLK_DIV         0x164 /* 0x59 offset in data sheet */
  78 #define VCLK_DIV_MASK           0xff
  79 #define VCLK_DIV_EN             BIT(16)
  80 #define VCLK_DIV_RESET          BIT(17)
  81 #define CTS_ENCP_SEL_MASK       (0xf << 24)
  82 #define CTS_ENCP_SEL_SHIFT      24
  83 #define CTS_ENCI_SEL_MASK       (0xf << 28)
  84 #define CTS_ENCI_SEL_SHIFT      28
  85 #define HHI_VID_CLK_CNTL        0x17c /* 0x5f offset in data sheet */
  86 #define VCLK_EN                 BIT(19)
  87 #define VCLK_SEL_MASK           (0x7 << 16)
  88 #define VCLK_SEL_SHIFT          16
  89 #define VCLK_SOFT_RESET         BIT(15)
  90 #define VCLK_DIV1_EN            BIT(0)
  91 #define VCLK_DIV2_EN            BIT(1)
  92 #define VCLK_DIV4_EN            BIT(2)
  93 #define VCLK_DIV6_EN            BIT(3)
  94 #define VCLK_DIV12_EN           BIT(4)
  95 #define HHI_VID_CLK_CNTL2       0x194 /* 0x65 offset in data sheet */
  96 #define CTS_ENCI_EN             BIT(0)
  97 #define CTS_ENCP_EN             BIT(2)
  98 #define CTS_VDAC_EN             BIT(4)
  99 #define HDMI_TX_PIXEL_EN        BIT(5)
 100 #define HHI_HDMI_CLK_CNTL       0x1cc /* 0x73 offset in data sheet */
 101 #define HDMI_TX_PIXEL_SEL_MASK  (0xf << 16)
 102 #define HDMI_TX_PIXEL_SEL_SHIFT 16
 103 #define CTS_HDMI_SYS_SEL_MASK   (0x7 << 9)
 104 #define CTS_HDMI_SYS_DIV_MASK   (0x7f)
 105 #define CTS_HDMI_SYS_EN         BIT(8)
 106
 107 #define HHI_VDAC_CNTL0          0x2F4 /* 0xbd offset in data sheet */
 108 #define HHI_VDAC_CNTL1          0x2F8 /* 0xbe offset in data sheet */
 109
 110 #define HHI_HDMI_PLL_CNTL       0x320 /* 0xc8 offset in data sheet */
 111 #define HHI_HDMI_PLL_CNTL2      0x324 /* 0xc9 offset in data sheet */
 112 #define HHI_HDMI_PLL_CNTL3      0x328 /* 0xca offset in data sheet */
 113 #define HHI_HDMI_PLL_CNTL4      0x32C /* 0xcb offset in data sheet */
 114 #define HHI_HDMI_PLL_CNTL5      0x330 /* 0xcc offset in data sheet */
 115 #define HHI_HDMI_PLL_CNTL6      0x334 /* 0xcd offset in data sheet */
 116
 117 #define HDMI_PLL_RESET          BIT(28)
 118 #define HDMI_PLL_LOCK           BIT(31)
 119
 120 /* VID PLL Dividers */
 121 enum {
 122         VID_PLL_DIV_1 = 0,
 123         VID_PLL_DIV_2,
 124         VID_PLL_DIV_2p5,
 125         VID_PLL_DIV_3,
 126         VID_PLL_DIV_3p5,
 127         VID_PLL_DIV_3p75,
 128         VID_PLL_DIV_4,
 129         VID_PLL_DIV_5,
 130         VID_PLL_DIV_6,
 131         VID_PLL_DIV_6p25,
 132         VID_PLL_DIV_7,
 133         VID_PLL_DIV_7p5,
 134         VID_PLL_DIV_12,
 135         VID_PLL_DIV_14,
 136         VID_PLL_DIV_15,
 137 };
 138
 139 void meson_vid_pll_set(struct meson_drm *priv, unsigned int div)
 140 {
 141         unsigned int shift_val = 0;
 142         unsigned int shift_sel = 0;
 143
 144         /* Disable vid_pll output clock */
 145         regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV, VID_PLL_EN, 0);
 146         regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV, VID_PLL_PRESET, 0);
 147
 148         switch (div) {
 149         case VID_PLL_DIV_2:
 150                 shift_val = 0x0aaa;
 151                 shift_sel = 0;
 152                 break;
 153         case VID_PLL_DIV_2p5:
 154                 shift_val = 0x5294;
 155                 shift_sel = 2;
 156                 break;
 157         case VID_PLL_DIV_3:
 158                 shift_val = 0x0db6;
 159                 shift_sel = 0;
 160                 break;
 161         case VID_PLL_DIV_3p5:
 162                 shift_val = 0x36cc;
 163                 shift_sel = 1;
 164                 break;
 165         case VID_PLL_DIV_3p75:
 166                 shift_val = 0x6666;
 167                 shift_sel = 2;
 168                 break;
 169         case VID_PLL_DIV_4:
 170                 shift_val = 0x0ccc;
 171                 shift_sel = 0;
 172                 break;
 173         case VID_PLL_DIV_5:
 174                 shift_val = 0x739c;
 175                 shift_sel = 2;
 176                 break;
 177         case VID_PLL_DIV_6:
 178                 shift_val = 0x0e38;
 179                 shift_sel = 0;
 180                 break;
 181         case VID_PLL_DIV_6p25:
 182                 shift_val = 0x0000;
 183                 shift_sel = 3;
 184                 break;
 185         case VID_PLL_DIV_7:
 186                 shift_val = 0x3c78;
 187                 shift_sel = 1;
 188                 break;
 189         case VID_PLL_DIV_7p5:
 190                 shift_val = 0x78f0;
 191                 shift_sel = 2;
 192                 break;
 193         case VID_PLL_DIV_12:
 194                 shift_val = 0x0fc0;
 195                 shift_sel = 0;
 196                 break;
 197         case VID_PLL_DIV_14:
 198                 shift_val = 0x3f80;
 199                 shift_sel = 1;
 200                 break;
 201         case VID_PLL_DIV_15:
 202                 shift_val = 0x7f80;
 203                 shift_sel = 2;
 204                 break;
 205         }
 206
 207         if (div == VID_PLL_DIV_1)
 208                 /* Enable vid_pll bypass to HDMI pll */
 209                 regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV,
 210                                    VID_PLL_BYPASS, VID_PLL_BYPASS);
 211         else {
 212                 /* Disable Bypass */
 213                 regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV,
 214                                    VID_PLL_BYPASS, 0);
 215                 /* Clear sel */
 216                 regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV,
 217                                    3 << 16, 0);
 218                 regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV,
 219                                    VID_PLL_PRESET, 0);
 220                 regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV,
 221                                    0x7fff, 0);
 222
 223                 /* Setup sel and val */
 224                 regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV,
 225                                    3 << 16, shift_sel << 16);
 226                 regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV,
 227                                    VID_PLL_PRESET, VID_PLL_PRESET);
 228                 regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV,
 229                                    0x7fff, shift_val);
 230
 231                 regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV,
 232                                    VID_PLL_PRESET, 0);
 233         }
 234
 235         /* Enable the vid_pll output clock */
 236         regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV,
 237                                 VID_PLL_EN, VID_PLL_EN);
 238 }
 239
 240 /*
 241  * Setup VCLK2 for 27MHz, and enable clocks for ENCI and VDAC
 242  *
 243  * TOFIX: Refactor into table to also handle HDMI frequency and paths
 244  */
 245 static void meson_venci_cvbs_clock_config(struct meson_drm *priv)
 246 {
 247         unsigned int val;
 248
 249         /* Setup PLL to output 1.485GHz */
 250         if (meson_vpu_is_compatible(priv, "amlogic,meson-gxbb-vpu")) {
 251                 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL, 0x5800023d);
 252                 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL2, 0x00404e00);
 253                 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL3, 0x0d5c5091);
 254                 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL4, 0x801da72c);
 255                 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL5, 0x71486980);
 256                 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL6, 0x00000e55);
 257                 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL, 0x4800023d);
 258         } else if (meson_vpu_is_compatible(priv, "amlogic,meson-gxm-vpu") ||
 259                    meson_vpu_is_compatible(priv, "amlogic,meson-gxl-vpu")) {
 260                 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL, 0x4000027b);
 261                 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL2, 0x800cb300);
 262                 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL3, 0xa6212844);
 263                 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL4, 0x0c4d000c);
 264                 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL5, 0x001fa729);
 265                 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL6, 0x01a31500);
 266
 267                 /* Reset PLL */
 268                 regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL,
 269                                         HDMI_PLL_RESET, HDMI_PLL_RESET);
 270                 regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL,
 271                                         HDMI_PLL_RESET, 0);
 272         }
 273
 274         /* Poll for lock bit */
 275         regmap_read_poll_timeout(priv->hhi, HHI_HDMI_PLL_CNTL, val,
 276                                  (val & HDMI_PLL_LOCK), 10, 0);
 277
 278         /* Disable VCLK2 */
 279         regmap_update_bits(priv->hhi, HHI_VIID_CLK_CNTL, VCLK2_EN, 0);
 280
 281         /* Setup vid_pll to /1 */
 282         meson_vid_pll_set(priv, VID_PLL_DIV_1);
 283
 284         /* Setup the VCLK2 divider value to achieve 27MHz */
 285         regmap_update_bits(priv->hhi, HHI_VIID_CLK_DIV,
 286                                 VCLK2_DIV_MASK, (55 - 1));
 287
 288         /* select vid_pll for vclk2 */
 289         regmap_update_bits(priv->hhi, HHI_VIID_CLK_CNTL,
 290                                 VCLK2_SEL_MASK, (4 << VCLK2_SEL_SHIFT));
 291         /* enable vclk2 gate */
 292         regmap_update_bits(priv->hhi, HHI_VIID_CLK_CNTL, VCLK2_EN, VCLK2_EN);
 293
 294         /* select vclk_div1 for enci */
 295         regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV,
 296                                 CTS_ENCI_SEL_MASK, (8 << CTS_ENCI_SEL_SHIFT));
 297         /* select vclk_div1 for vdac */
 298         regmap_update_bits(priv->hhi, HHI_VIID_CLK_DIV,
 299                                 CTS_VDAC_SEL_MASK, (8 << CTS_VDAC_SEL_SHIFT));
 300
 301         /* release vclk2_div_reset and enable vclk2_div */
 302         regmap_update_bits(priv->hhi, HHI_VIID_CLK_DIV,
 303                                 VCLK2_DIV_EN | VCLK2_DIV_RESET, VCLK2_DIV_EN);
 304
 305         /* enable vclk2_div1 gate */
 306         regmap_update_bits(priv->hhi, HHI_VIID_CLK_CNTL,
 307                                 VCLK2_DIV1_EN, VCLK2_DIV1_EN);
 308
 309         /* reset vclk2 */
 310         regmap_update_bits(priv->hhi, HHI_VIID_CLK_CNTL,
 311                                 VCLK2_SOFT_RESET, VCLK2_SOFT_RESET);
 312         regmap_update_bits(priv->hhi, HHI_VIID_CLK_CNTL,
 313                                 VCLK2_SOFT_RESET, 0);
 314
 315         /* enable enci_clk */
 316         regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL2,
 317                                 CTS_ENCI_EN, CTS_ENCI_EN);
 318         /* enable vdac_clk */
 319         regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL2,
 320                                 CTS_VDAC_EN, CTS_VDAC_EN);
 321 }
 322
 323
 324 /* PLL  O1 O2 O3 VP DV     EN TX */
 325 /* 4320 /4 /4 /1 /5 /1  => /2 /2 */
 326 #define MESON_VCLK_HDMI_ENCI_54000      1
 327 /* 4320 /4 /4 /1 /5 /1  => /1 /2 */
 328 #define MESON_VCLK_HDMI_DDR_54000       2
 329 /* 2970 /4 /1 /1 /5 /1  => /1 /2 */
 330 #define MESON_VCLK_HDMI_DDR_148500      3
 331 /* 2970 /2 /2 /2 /5 /1  => /1 /1 */
 332 #define MESON_VCLK_HDMI_74250           4
 333 /* 2970 /1 /2 /2 /5 /1  => /1 /1 */
 334 #define MESON_VCLK_HDMI_148500          5
 335 /* 2970 /1 /1 /1 /5 /2  => /1 /1 */
 336 #define MESON_VCLK_HDMI_297000          6
 337 /* 5940 /1 /1 /2 /5 /1  => /1 /1 */
 338 #define MESON_VCLK_HDMI_594000          7
 339
 340 struct meson_vclk_params {
 341         unsigned int pll_base_freq;
 342         unsigned int pll_od1;
 343         unsigned int pll_od2;
 344         unsigned int pll_od3;
 345         unsigned int vid_pll_div;
 346         unsigned int vclk_div;
 347 } params[] = {
 348         [MESON_VCLK_HDMI_ENCI_54000] = {
 349                 .pll_base_freq = 4320000,
 350                 .pll_od1 = 4,
 351                 .pll_od2 = 4,
 352                 .pll_od3 = 1,
 353                 .vid_pll_div = VID_PLL_DIV_5,
 354                 .vclk_div = 1,
 355         },
 356         [MESON_VCLK_HDMI_DDR_54000] = {
 357                 .pll_base_freq = 4320000,
 358                 .pll_od1 = 4,
 359                 .pll_od2 = 4,
 360                 .pll_od3 = 1,
 361                 .vid_pll_div = VID_PLL_DIV_5,
 362                 .vclk_div = 1,
 363         },
 364         [MESON_VCLK_HDMI_DDR_148500] = {
 365                 .pll_base_freq = 2970000,
 366                 .pll_od1 = 4,
 367                 .pll_od2 = 1,
 368                 .pll_od3 = 1,
 369                 .vid_pll_div = VID_PLL_DIV_5,
 370                 .vclk_div = 1,
 371         },
 372         [MESON_VCLK_HDMI_74250] = {
 373                 .pll_base_freq = 2970000,
 374                 .pll_od1 = 2,
 375                 .pll_od2 = 2,
 376                 .pll_od3 = 2,
 377                 .vid_pll_div = VID_PLL_DIV_5,
 378                 .vclk_div = 1,
 379         },
 380         [MESON_VCLK_HDMI_148500] = {
 381                 .pll_base_freq = 2970000,
 382                 .pll_od1 = 1,
 383                 .pll_od2 = 2,
 384                 .pll_od3 = 2,
 385                 .vid_pll_div = VID_PLL_DIV_5,
 386                 .vclk_div = 1,
 387         },
 388         [MESON_VCLK_HDMI_297000] = {
 389                 .pll_base_freq = 2970000,
 390                 .pll_od1 = 1,
 391                 .pll_od2 = 1,
 392                 .pll_od3 = 1,
 393                 .vid_pll_div = VID_PLL_DIV_5,
 394                 .vclk_div = 2,
 395         },
 396         [MESON_VCLK_HDMI_594000] = {
 397                 .pll_base_freq = 5940000,
 398                 .pll_od1 = 1,
 399                 .pll_od2 = 1,
 400                 .pll_od3 = 2,
 401                 .vid_pll_div = VID_PLL_DIV_5,
 402                 .vclk_div = 1,
 403         },
 404 };
 405
 406 static inline unsigned int pll_od_to_reg(unsigned int od)
 407 {
 408         switch (od) {
 409         case 1:
 410                 return 0;
 411         case 2:
 412                 return 1;
 413         case 4:
 414                 return 2;
 415         case 8:
 416                 return 3;
 417         }
 418
 419         /* Invalid */
 420         return 0;
 421 }
 422
 423 void meson_hdmi_pll_set(struct meson_drm *priv,
 424                         unsigned int base,
 425                         unsigned int od1,
 426                         unsigned int od2,
 427                         unsigned int od3)
 428 {
 429         unsigned int val;
 430
 431         if (meson_vpu_is_compatible(priv, "amlogic,meson-gxbb-vpu")) {
 432                 switch (base) {
 433                 case 2970000:
 434                         regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL, 0x5800023d);
 435                         regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL2, 0x00000000);
 436                         regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL3, 0x0d5c5091);
 437                         regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL4, 0x801da72c);
 438                         regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL5, 0x71486980);
 439                         regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL6, 0x00000e55);
 440
 441                         /* Enable and unreset */
 442                         regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL,
 443                                                 0x7 << 28, 0x4 << 28);
 444
 445                         /* Poll for lock bit */
 446                         regmap_read_poll_timeout(priv->hhi, HHI_HDMI_PLL_CNTL,
 447                                         val, (val & HDMI_PLL_LOCK), 10, 0);
 448
 449                         /* div_frac */
 450                         regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL2,
 451                                                 0xFFFF,  0x4e00);
 452                         break;
 453
 454                 case 4320000:
 455                         regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL, 0x5800025a);
 456                         regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL2, 0x00000000);
 457                         regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL3, 0x0d5c5091);
 458                         regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL4, 0x801da72c);
 459                         regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL5, 0x71486980);
 460                         regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL6, 0x00000e55);
 461
 462                         /* unreset */
 463                         regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL,
 464                                                 BIT(28), 0);
 465
 466                         /* Poll for lock bit */
 467                         regmap_read_poll_timeout(priv->hhi, HHI_HDMI_PLL_CNTL,
 468                                         val, (val & HDMI_PLL_LOCK), 10, 0);
 469                         break;
 470
 471                 case 5940000:
 472                         regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL, 0x5800027b);
 473                         regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL2,
 474                                                 0xFFFF,  0x4c00);
 475                         regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL3, 0x135c5091);
 476                         regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL4, 0x801da72c);
 477                         regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL5, 0x71486980);
 478                         regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL6, 0x00000e55);
 479
 480                         /* unreset */
 481                         regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL,
 482                                                 BIT(28), 0);
 483
 484                         /* Poll for lock bit */
 485                         regmap_read_poll_timeout(priv->hhi, HHI_HDMI_PLL_CNTL,
 486                                         val, (val & HDMI_PLL_LOCK), 10, 0);
 487                         break;
 488                 };
 489         } else if (meson_vpu_is_compatible(priv, "amlogic,meson-gxm-vpu") ||
 490                    meson_vpu_is_compatible(priv, "amlogic,meson-gxl-vpu")) {
 491                 switch (base) {
 492                 case 2970000:
 493                         regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL, 0x4000027b);
 494                         regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL2, 0x800cb300);
 495                         regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL3, 0x860f30c4);
 496                         regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL4, 0x0c8e0000);
 497                         regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL5, 0x001fa729);
 498                         regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL6, 0x01a31500);
 499                         break;
 500
 501                 case 4320000:
 502                         regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL, 0x400002b4);
 503                         regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL2, 0x800cb000);
 504                         regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL3, 0x860f30c4);
 505                         regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL4, 0x0c8e0000);
 506                         regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL5, 0x001fa729);
 507                         regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL6, 0x01a31500);
 508                         break;
 509
 510                 case 5940000:
 511                         regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL, 0x400002f7);
 512                         regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL2, 0x800cb200);
 513                         regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL3, 0x860f30c4);
 514                         regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL4, 0x0c8e0000);
 515                         regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL5, 0x001fa729);
 516                         regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL6, 0x01a31500);
 517                         break;
 518
 519                 };
 520
 521                 /* Reset PLL */
 522                 regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL,
 523                                         HDMI_PLL_RESET, HDMI_PLL_RESET);
 524                 regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL,
 525                                         HDMI_PLL_RESET, 0);
 526
 527                 /* Poll for lock bit */
 528                 regmap_read_poll_timeout(priv->hhi, HHI_HDMI_PLL_CNTL, val,
 529                                 (val & HDMI_PLL_LOCK), 10, 0);
 530         };
 531
 532         if (meson_vpu_is_compatible(priv, "amlogic,meson-gxbb-vpu"))
 533                 regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL2,
 534                                    3 << 16, pll_od_to_reg(od1) << 16);
 535         else if (meson_vpu_is_compatible(priv, "amlogic,meson-gxm-vpu") ||
 536                  meson_vpu_is_compatible(priv, "amlogic,meson-gxl-vpu"))
 537                 regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL3,
 538                                    3 << 21, pll_od_to_reg(od1) << 21);
 539
 540         if (meson_vpu_is_compatible(priv, "amlogic,meson-gxbb-vpu"))
 541                 regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL2,
 542                                    3 << 22, pll_od_to_reg(od2) << 22);
 543         else if (meson_vpu_is_compatible(priv, "amlogic,meson-gxm-vpu") ||
 544                  meson_vpu_is_compatible(priv, "amlogic,meson-gxl-vpu"))
 545                 regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL3,
 546                                    3 << 23, pll_od_to_reg(od2) << 23);
 547
 548         if (meson_vpu_is_compatible(priv, "amlogic,meson-gxbb-vpu"))
 549                 regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL2,
 550                                    3 << 18, pll_od_to_reg(od3) << 18);
 551         else if (meson_vpu_is_compatible(priv, "amlogic,meson-gxm-vpu") ||
 552                  meson_vpu_is_compatible(priv, "amlogic,meson-gxl-vpu"))
 553                 regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL3,
 554                                    3 << 19, pll_od_to_reg(od3) << 19);
 555 }
 556
 557 void meson_vclk_setup(struct meson_drm *priv, unsigned int target,
 558                       unsigned int vclk_freq, unsigned int venc_freq,
 559                       unsigned int dac_freq, bool hdmi_use_enci)
 560 {
 561         unsigned int freq;
 562         unsigned int hdmi_tx_div;
 563         unsigned int venc_div;
 564
 565         if (target == MESON_VCLK_TARGET_CVBS) {
 566                 meson_venci_cvbs_clock_config(priv);
 567                 return;
 568         }
 569
 570         hdmi_tx_div = vclk_freq / dac_freq;
 571
 572         if (hdmi_tx_div == 0) {
 573                 pr_err("Fatal Error, invalid HDMI-TX freq %d\n",
 574                                 dac_freq);
 575                 return;
 576         }
 577
 578         venc_div = vclk_freq / venc_freq;
 579
 580         if (venc_div == 0) {
 581                 pr_err("Fatal Error, invalid HDMI venc freq %d\n",
 582                                 venc_freq);
 583                 return;
 584         }
 585
 586         switch (vclk_freq) {
 587         case 54000:
 588                 if (hdmi_use_enci)
 589                         freq = MESON_VCLK_HDMI_ENCI_54000;
 590                 else
 591                         freq = MESON_VCLK_HDMI_DDR_54000;
 592                 break;
 593         case 74250:
 594                 freq = MESON_VCLK_HDMI_74250;
 595                 break;
 596         case 148500:
 597                 if (dac_freq != 148500)
 598                         freq = MESON_VCLK_HDMI_DDR_148500;
 599                 else
 600                         freq = MESON_VCLK_HDMI_148500;
 601                 break;
 602         case 297000:
 603                 freq = MESON_VCLK_HDMI_297000;
 604                 break;
 605         case 594000:
 606                 freq = MESON_VCLK_HDMI_594000;
 607                 break;
 608         default:
 609                 pr_err("Fatal Error, invalid HDMI vclk freq %d\n",
 610                         vclk_freq);
 611                 return;
 612         }
 613
 614         /* Set HDMI-TX sys clock */
 615         regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL,
 616                            CTS_HDMI_SYS_SEL_MASK, 0);
 617         regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL,
 618                            CTS_HDMI_SYS_DIV_MASK, 0);
 619         regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL,
 620                            CTS_HDMI_SYS_EN, CTS_HDMI_SYS_EN);
 621
 622         /* Set HDMI PLL rate */
 623         meson_hdmi_pll_set(priv, params[freq].pll_base_freq,
 624                            params[freq].pll_od1,
 625                            params[freq].pll_od2,
 626                            params[freq].pll_od3);
 627
 628         /* Setup vid_pll divider */
 629         meson_vid_pll_set(priv, params[freq].vid_pll_div);
 630
 631         /* Set VCLK div */
 632         regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL,
 633                            VCLK_SEL_MASK, 0);
 634         regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV,
 635                            VCLK_DIV_MASK, params[freq].vclk_div - 1);
 636
 637         /* Set HDMI-TX source */
 638         switch (hdmi_tx_div) {
 639         case 1:
 640                 /* enable vclk_div1 gate */
 641                 regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL,
 642                                    VCLK_DIV1_EN, VCLK_DIV1_EN);
 643
 644                 /* select vclk_div1 for HDMI-TX */
 645                 regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL,
 646                                    HDMI_TX_PIXEL_SEL_MASK, 0);
 647                 break;
 648         case 2:
 649                 /* enable vclk_div2 gate */
 650                 regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL,
 651                                    VCLK_DIV2_EN, VCLK_DIV2_EN);
 652
 653                 /* select vclk_div2 for HDMI-TX */
 654                 regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL,
 655                         HDMI_TX_PIXEL_SEL_MASK, 1 << HDMI_TX_PIXEL_SEL_SHIFT);
 656                 break;
 657         case 4:
 658                 /* enable vclk_div4 gate */
 659                 regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL,
 660                                    VCLK_DIV4_EN, VCLK_DIV4_EN);
 661
 662                 /* select vclk_div4 for HDMI-TX */
 663                 regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL,
 664                         HDMI_TX_PIXEL_SEL_MASK, 2 << HDMI_TX_PIXEL_SEL_SHIFT);
 665                 break;
 666         case 6:
 667                 /* enable vclk_div6 gate */
 668                 regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL,
 669                                    VCLK_DIV6_EN, VCLK_DIV6_EN);
 670
 671                 /* select vclk_div6 for HDMI-TX */
 672                 regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL,
 673                         HDMI_TX_PIXEL_SEL_MASK, 3 << HDMI_TX_PIXEL_SEL_SHIFT);
 674                 break;
 675         case 12:
 676                 /* enable vclk_div12 gate */
 677                 regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL,
 678                                    VCLK_DIV12_EN, VCLK_DIV12_EN);
 679
 680                 /* select vclk_div12 for HDMI-TX */
 681                 regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL,
 682                         HDMI_TX_PIXEL_SEL_MASK, 4 << HDMI_TX_PIXEL_SEL_SHIFT);
 683                 break;
 684         }
 685         regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL2,
 686                                    HDMI_TX_PIXEL_EN, HDMI_TX_PIXEL_EN);
 687
 688         /* Set ENCI/ENCP Source */
 689         switch (venc_div) {
 690         case 1:
 691                 /* enable vclk_div1 gate */
 692                 regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL,
 693                                    VCLK_DIV1_EN, VCLK_DIV1_EN);
 694
 695                 if (hdmi_use_enci)
 696                         /* select vclk_div1 for enci */
 697                         regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV,
 698                                            CTS_ENCI_SEL_MASK, 0);
 699                 else
 700                         /* select vclk_div1 for encp */
 701                         regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV,
 702                                            CTS_ENCP_SEL_MASK, 0);
 703                 break;
 704         case 2:
 705                 /* enable vclk_div2 gate */
 706                 regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL,
 707                                    VCLK_DIV2_EN, VCLK_DIV2_EN);
 708
 709                 if (hdmi_use_enci)
 710                         /* select vclk_div2 for enci */
 711                         regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV,
 712                                 CTS_ENCI_SEL_MASK, 1 << CTS_ENCI_SEL_SHIFT);
 713                 else
 714                         /* select vclk_div2 for encp */
 715                         regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV,
 716                                 CTS_ENCP_SEL_MASK, 1 << CTS_ENCP_SEL_SHIFT);
 717                 break;
 718         case 4:
 719                 /* enable vclk_div4 gate */
 720                 regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL,
 721                                    VCLK_DIV4_EN, VCLK_DIV4_EN);
 722
 723                 if (hdmi_use_enci)
 724                         /* select vclk_div4 for enci */
 725                         regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV,
 726                                 CTS_ENCI_SEL_MASK, 2 << CTS_ENCI_SEL_SHIFT);
 727                 else
 728                         /* select vclk_div4 for encp */
 729                         regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV,
 730                                 CTS_ENCP_SEL_MASK, 2 << CTS_ENCP_SEL_SHIFT);
 731                 break;
 732         case 6:
 733                 /* enable vclk_div6 gate */
 734                 regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL,
 735                                    VCLK_DIV6_EN, VCLK_DIV6_EN);
 736
 737                 if (hdmi_use_enci)
 738                         /* select vclk_div6 for enci */
 739                         regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV,
 740                                 CTS_ENCI_SEL_MASK, 3 << CTS_ENCI_SEL_SHIFT);
 741                 else
 742                         /* select vclk_div6 for encp */
 743                         regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV,
 744                                 CTS_ENCP_SEL_MASK, 3 << CTS_ENCP_SEL_SHIFT);
 745                 break;
 746         case 12:
 747                 /* enable vclk_div12 gate */
 748                 regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL,
 749                                    VCLK_DIV12_EN, VCLK_DIV12_EN);
 750
 751                 if (hdmi_use_enci)
 752                         /* select vclk_div12 for enci */
 753                         regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV,
 754                                 CTS_ENCI_SEL_MASK, 4 << CTS_ENCI_SEL_SHIFT);
 755                 else
 756                         /* select vclk_div12 for encp */
 757                         regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV,
 758                                 CTS_ENCP_SEL_MASK, 4 << CTS_ENCP_SEL_SHIFT);
 759                 break;
 760         }
 761
 762         if (hdmi_use_enci)
 763                 /* Enable ENCI clock gate */
 764                 regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL2,
 765                                    CTS_ENCI_EN, CTS_ENCI_EN);
 766         else
 767                 /* Enable ENCP clock gate */
 768                 regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL2,
 769                                    CTS_ENCP_EN, CTS_ENCP_EN);
 770
 771         regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL, VCLK_EN, VCLK_EN);
 772 }
 773 EXPORT_SYMBOL_GPL(meson_vclk_setup);