drivers/gpu/drm/sun4i/sun8i_hdmi_phy.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (c) 2018 Jernej Skrabec <jernej.skrabec@siol.net>
   4  */
   5
   6 #include <linux/delay.h>
   7 #include <linux/of_address.h>
   8
   9 #include "sun8i_dw_hdmi.h"
  10
  11 /*
  12  * Address can be actually any value. Here is set to same value as
  13  * it is set in BSP driver.
  14  */
  15 #define I2C_ADDR        0x69
  16
  17 static const struct dw_hdmi_mpll_config sun50i_h6_mpll_cfg[] = {
  18         {
  19                 30666000, {
  20                         { 0x00b3, 0x0000 },
  21                         { 0x2153, 0x0000 },
  22                         { 0x40f3, 0x0000 },
  23                 },
  24         },  {
  25                 36800000, {
  26                         { 0x00b3, 0x0000 },
  27                         { 0x2153, 0x0000 },
  28                         { 0x40a2, 0x0001 },
  29                 },
  30         },  {
  31                 46000000, {
  32                         { 0x00b3, 0x0000 },
  33                         { 0x2142, 0x0001 },
  34                         { 0x40a2, 0x0001 },
  35                 },
  36         },  {
  37                 61333000, {
  38                         { 0x0072, 0x0001 },
  39                         { 0x2142, 0x0001 },
  40                         { 0x40a2, 0x0001 },
  41                 },
  42         },  {
  43                 73600000, {
  44                         { 0x0072, 0x0001 },
  45                         { 0x2142, 0x0001 },
  46                         { 0x4061, 0x0002 },
  47                 },
  48         },  {
  49                 92000000, {
  50                         { 0x0072, 0x0001 },
  51                         { 0x2145, 0x0002 },
  52                         { 0x4061, 0x0002 },
  53                 },
  54         },  {
  55                 122666000, {
  56                         { 0x0051, 0x0002 },
  57                         { 0x2145, 0x0002 },
  58                         { 0x4061, 0x0002 },
  59                 },
  60         },  {
  61                 147200000, {
  62                         { 0x0051, 0x0002 },
  63                         { 0x2145, 0x0002 },
  64                         { 0x4064, 0x0003 },
  65                 },
  66         },  {
  67                 184000000, {
  68                         { 0x0051, 0x0002 },
  69                         { 0x214c, 0x0003 },
  70                         { 0x4064, 0x0003 },
  71                 },
  72         },  {
  73                 226666000, {
  74                         { 0x0040, 0x0003 },
  75                         { 0x214c, 0x0003 },
  76                         { 0x4064, 0x0003 },
  77                 },
  78         },  {
  79                 272000000, {
  80                         { 0x0040, 0x0003 },
  81                         { 0x214c, 0x0003 },
  82                         { 0x5a64, 0x0003 },
  83                 },
  84         },  {
  85                 340000000, {
  86                         { 0x0040, 0x0003 },
  87                         { 0x3b4c, 0x0003 },
  88                         { 0x5a64, 0x0003 },
  89                 },
  90         },  {
  91                 594000000, {
  92                         { 0x1a40, 0x0003 },
  93                         { 0x3b4c, 0x0003 },
  94                         { 0x5a64, 0x0003 },
  95                 },
  96         }, {
  97                 ~0UL, {
  98                         { 0x0000, 0x0000 },
  99                         { 0x0000, 0x0000 },
 100                         { 0x0000, 0x0000 },
 101                 },
 102         }
 103 };
 104
 105 static const struct dw_hdmi_curr_ctrl sun50i_h6_cur_ctr[] = {
 106         /* pixelclk    bpp8    bpp10   bpp12 */
 107         { 25175000,  { 0x0000, 0x0000, 0x0000 }, },
 108         { 27000000,  { 0x0012, 0x0000, 0x0000 }, },
 109         { 59400000,  { 0x0008, 0x0008, 0x0008 }, },
 110         { 72000000,  { 0x0008, 0x0008, 0x001b }, },
 111         { 74250000,  { 0x0013, 0x0013, 0x0013 }, },
 112         { 90000000,  { 0x0008, 0x001a, 0x001b }, },
 113         { 118800000, { 0x001b, 0x001a, 0x001b }, },
 114         { 144000000, { 0x001b, 0x001a, 0x0034 }, },
 115         { 180000000, { 0x001b, 0x0033, 0x0034 }, },
 116         { 216000000, { 0x0036, 0x0033, 0x0034 }, },
 117         { 237600000, { 0x0036, 0x0033, 0x001b }, },
 118         { 288000000, { 0x0036, 0x001b, 0x001b }, },
 119         { 297000000, { 0x0019, 0x001b, 0x0019 }, },
 120         { 330000000, { 0x0036, 0x001b, 0x001b }, },
 121         { 594000000, { 0x003f, 0x001b, 0x001b }, },
 122         { ~0UL,      { 0x0000, 0x0000, 0x0000 }, }
 123 };
 124
 125 static const struct dw_hdmi_phy_config sun50i_h6_phy_config[] = {
 126         /*pixelclk   symbol   term   vlev*/
 127         { 74250000,  0x8009, 0x0004, 0x0232},
 128         { 148500000, 0x8029, 0x0004, 0x0273},
 129         { 594000000, 0x8039, 0x0004, 0x014a},
 130         { ~0UL,      0x0000, 0x0000, 0x0000}
 131 };
 132
 133 static int sun8i_hdmi_phy_config_a83t(struct dw_hdmi *hdmi,
 134                                       struct sun8i_hdmi_phy *phy,
 135                                       unsigned int clk_rate)
 136 {
 137         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_REXT_CTRL_REG,
 138                            SUN8I_HDMI_PHY_REXT_CTRL_REXT_EN,
 139                            SUN8I_HDMI_PHY_REXT_CTRL_REXT_EN);
 140
 141         /* power down */
 142         dw_hdmi_phy_gen2_txpwron(hdmi, 0);
 143         dw_hdmi_phy_gen2_pddq(hdmi, 1);
 144
 145         dw_hdmi_phy_reset(hdmi);
 146
 147         dw_hdmi_phy_gen2_pddq(hdmi, 0);
 148
 149         dw_hdmi_phy_i2c_set_addr(hdmi, I2C_ADDR);
 150
 151         /*
 152          * Values are taken from BSP HDMI driver. Although AW didn't
 153          * release any documentation, explanation of this values can
 154          * be found in i.MX 6Dual/6Quad Reference Manual.
 155          */
 156         if (clk_rate <= 27000000) {
 157                 dw_hdmi_phy_i2c_write(hdmi, 0x01e0, 0x06);
 158                 dw_hdmi_phy_i2c_write(hdmi, 0x0000, 0x15);
 159                 dw_hdmi_phy_i2c_write(hdmi, 0x08da, 0x10);
 160                 dw_hdmi_phy_i2c_write(hdmi, 0x0007, 0x19);
 161                 dw_hdmi_phy_i2c_write(hdmi, 0x0318, 0x0e);
 162                 dw_hdmi_phy_i2c_write(hdmi, 0x8009, 0x09);
 163         } else if (clk_rate <= 74250000) {
 164                 dw_hdmi_phy_i2c_write(hdmi, 0x0540, 0x06);
 165                 dw_hdmi_phy_i2c_write(hdmi, 0x0005, 0x15);
 166                 dw_hdmi_phy_i2c_write(hdmi, 0x0000, 0x10);
 167                 dw_hdmi_phy_i2c_write(hdmi, 0x0007, 0x19);
 168                 dw_hdmi_phy_i2c_write(hdmi, 0x02b5, 0x0e);
 169                 dw_hdmi_phy_i2c_write(hdmi, 0x8009, 0x09);
 170         } else if (clk_rate <= 148500000) {
 171                 dw_hdmi_phy_i2c_write(hdmi, 0x04a0, 0x06);
 172                 dw_hdmi_phy_i2c_write(hdmi, 0x000a, 0x15);
 173                 dw_hdmi_phy_i2c_write(hdmi, 0x0000, 0x10);
 174                 dw_hdmi_phy_i2c_write(hdmi, 0x0002, 0x19);
 175                 dw_hdmi_phy_i2c_write(hdmi, 0x0021, 0x0e);
 176                 dw_hdmi_phy_i2c_write(hdmi, 0x8029, 0x09);
 177         } else {
 178                 dw_hdmi_phy_i2c_write(hdmi, 0x0000, 0x06);
 179                 dw_hdmi_phy_i2c_write(hdmi, 0x000f, 0x15);
 180                 dw_hdmi_phy_i2c_write(hdmi, 0x0000, 0x10);
 181                 dw_hdmi_phy_i2c_write(hdmi, 0x0002, 0x19);
 182                 dw_hdmi_phy_i2c_write(hdmi, 0x0000, 0x0e);
 183                 dw_hdmi_phy_i2c_write(hdmi, 0x802b, 0x09);
 184         }
 185
 186         dw_hdmi_phy_i2c_write(hdmi, 0x0000, 0x1e);
 187         dw_hdmi_phy_i2c_write(hdmi, 0x0000, 0x13);
 188         dw_hdmi_phy_i2c_write(hdmi, 0x0000, 0x17);
 189
 190         dw_hdmi_phy_gen2_txpwron(hdmi, 1);
 191
 192         return 0;
 193 }
 194
 195 static int sun8i_hdmi_phy_config_h3(struct dw_hdmi *hdmi,
 196                                     struct sun8i_hdmi_phy *phy,
 197                                     unsigned int clk_rate)
 198 {
 199         u32 pll_cfg1_init;
 200         u32 pll_cfg2_init;
 201         u32 ana_cfg1_end;
 202         u32 ana_cfg2_init;
 203         u32 ana_cfg3_init;
 204         u32 b_offset = 0;
 205         u32 val;
 206
 207         /* bandwidth / frequency independent settings */
 208
 209         pll_cfg1_init = SUN8I_HDMI_PHY_PLL_CFG1_LDO2_EN |
 210                         SUN8I_HDMI_PHY_PLL_CFG1_LDO1_EN |
 211                         SUN8I_HDMI_PHY_PLL_CFG1_LDO_VSET(7) |
 212                         SUN8I_HDMI_PHY_PLL_CFG1_UNKNOWN(1) |
 213                         SUN8I_HDMI_PHY_PLL_CFG1_PLLDBEN |
 214                         SUN8I_HDMI_PHY_PLL_CFG1_CS |
 215                         SUN8I_HDMI_PHY_PLL_CFG1_CP_S(2) |
 216                         SUN8I_HDMI_PHY_PLL_CFG1_CNT_INT(63) |
 217                         SUN8I_HDMI_PHY_PLL_CFG1_BWS;
 218
 219         pll_cfg2_init = SUN8I_HDMI_PHY_PLL_CFG2_SV_H |
 220                         SUN8I_HDMI_PHY_PLL_CFG2_VCOGAIN_EN |
 221                         SUN8I_HDMI_PHY_PLL_CFG2_SDIV2;
 222
 223         ana_cfg1_end = SUN8I_HDMI_PHY_ANA_CFG1_REG_SVBH(1) |
 224                        SUN8I_HDMI_PHY_ANA_CFG1_AMP_OPT |
 225                        SUN8I_HDMI_PHY_ANA_CFG1_EMP_OPT |
 226                        SUN8I_HDMI_PHY_ANA_CFG1_AMPCK_OPT |
 227                        SUN8I_HDMI_PHY_ANA_CFG1_EMPCK_OPT |
 228                        SUN8I_HDMI_PHY_ANA_CFG1_ENRCAL |
 229                        SUN8I_HDMI_PHY_ANA_CFG1_ENCALOG |
 230                        SUN8I_HDMI_PHY_ANA_CFG1_REG_SCKTMDS |
 231                        SUN8I_HDMI_PHY_ANA_CFG1_TMDSCLK_EN |
 232                        SUN8I_HDMI_PHY_ANA_CFG1_TXEN_MASK |
 233                        SUN8I_HDMI_PHY_ANA_CFG1_TXEN_ALL |
 234                        SUN8I_HDMI_PHY_ANA_CFG1_BIASEN_TMDSCLK |
 235                        SUN8I_HDMI_PHY_ANA_CFG1_BIASEN_TMDS2 |
 236                        SUN8I_HDMI_PHY_ANA_CFG1_BIASEN_TMDS1 |
 237                        SUN8I_HDMI_PHY_ANA_CFG1_BIASEN_TMDS0 |
 238                        SUN8I_HDMI_PHY_ANA_CFG1_ENP2S_TMDS2 |
 239                        SUN8I_HDMI_PHY_ANA_CFG1_ENP2S_TMDS1 |
 240                        SUN8I_HDMI_PHY_ANA_CFG1_ENP2S_TMDS0 |
 241                        SUN8I_HDMI_PHY_ANA_CFG1_CKEN |
 242                        SUN8I_HDMI_PHY_ANA_CFG1_LDOEN |
 243                        SUN8I_HDMI_PHY_ANA_CFG1_ENVBS |
 244                        SUN8I_HDMI_PHY_ANA_CFG1_ENBI;
 245
 246         ana_cfg2_init = SUN8I_HDMI_PHY_ANA_CFG2_M_EN |
 247                         SUN8I_HDMI_PHY_ANA_CFG2_REG_DENCK |
 248                         SUN8I_HDMI_PHY_ANA_CFG2_REG_DEN |
 249                         SUN8I_HDMI_PHY_ANA_CFG2_REG_CKSS(1) |
 250                         SUN8I_HDMI_PHY_ANA_CFG2_REG_CSMPS(1);
 251
 252         ana_cfg3_init = SUN8I_HDMI_PHY_ANA_CFG3_REG_WIRE(0x3e0) |
 253                         SUN8I_HDMI_PHY_ANA_CFG3_SDAEN |
 254                         SUN8I_HDMI_PHY_ANA_CFG3_SCLEN;
 255
 256         /* bandwidth / frequency dependent settings */
 257         if (clk_rate <= 27000000) {
 258                 pll_cfg1_init |= SUN8I_HDMI_PHY_PLL_CFG1_HV_IS_33 |
 259                                  SUN8I_HDMI_PHY_PLL_CFG1_CNT_INT(32);
 260                 pll_cfg2_init |= SUN8I_HDMI_PHY_PLL_CFG2_VCO_S(4) |
 261                                  SUN8I_HDMI_PHY_PLL_CFG2_S(4);
 262                 ana_cfg1_end |= SUN8I_HDMI_PHY_ANA_CFG1_REG_CALSW;
 263                 ana_cfg2_init |= SUN8I_HDMI_PHY_ANA_CFG2_REG_SLV(4) |
 264                                  SUN8I_HDMI_PHY_ANA_CFG2_REG_RESDI(phy->rcal);
 265                 ana_cfg3_init |= SUN8I_HDMI_PHY_ANA_CFG3_REG_AMPCK(3) |
 266                                  SUN8I_HDMI_PHY_ANA_CFG3_REG_AMP(5);
 267         } else if (clk_rate <= 74250000) {
 268                 pll_cfg1_init |= SUN8I_HDMI_PHY_PLL_CFG1_HV_IS_33 |
 269                                  SUN8I_HDMI_PHY_PLL_CFG1_CNT_INT(32);
 270                 pll_cfg2_init |= SUN8I_HDMI_PHY_PLL_CFG2_VCO_S(4) |
 271                                  SUN8I_HDMI_PHY_PLL_CFG2_S(5);
 272                 ana_cfg1_end |= SUN8I_HDMI_PHY_ANA_CFG1_REG_CALSW;
 273                 ana_cfg2_init |= SUN8I_HDMI_PHY_ANA_CFG2_REG_SLV(4) |
 274                                  SUN8I_HDMI_PHY_ANA_CFG2_REG_RESDI(phy->rcal);
 275                 ana_cfg3_init |= SUN8I_HDMI_PHY_ANA_CFG3_REG_AMPCK(5) |
 276                                  SUN8I_HDMI_PHY_ANA_CFG3_REG_AMP(7);
 277         } else if (clk_rate <= 148500000) {
 278                 pll_cfg1_init |= SUN8I_HDMI_PHY_PLL_CFG1_HV_IS_33 |
 279                                  SUN8I_HDMI_PHY_PLL_CFG1_CNT_INT(32);
 280                 pll_cfg2_init |= SUN8I_HDMI_PHY_PLL_CFG2_VCO_S(4) |
 281                                  SUN8I_HDMI_PHY_PLL_CFG2_S(6);
 282                 ana_cfg2_init |= SUN8I_HDMI_PHY_ANA_CFG2_REG_BIGSWCK |
 283                                  SUN8I_HDMI_PHY_ANA_CFG2_REG_BIGSW |
 284                                  SUN8I_HDMI_PHY_ANA_CFG2_REG_SLV(2);
 285                 ana_cfg3_init |= SUN8I_HDMI_PHY_ANA_CFG3_REG_AMPCK(7) |
 286                                  SUN8I_HDMI_PHY_ANA_CFG3_REG_AMP(9);
 287         } else {
 288                 b_offset = 2;
 289                 pll_cfg1_init |= SUN8I_HDMI_PHY_PLL_CFG1_CNT_INT(63);
 290                 pll_cfg2_init |= SUN8I_HDMI_PHY_PLL_CFG2_VCO_S(6) |
 291                                  SUN8I_HDMI_PHY_PLL_CFG2_S(7);
 292                 ana_cfg2_init |= SUN8I_HDMI_PHY_ANA_CFG2_REG_BIGSWCK |
 293                                  SUN8I_HDMI_PHY_ANA_CFG2_REG_BIGSW |
 294                                  SUN8I_HDMI_PHY_ANA_CFG2_REG_SLV(4);
 295                 ana_cfg3_init |= SUN8I_HDMI_PHY_ANA_CFG3_REG_AMPCK(9) |
 296                                  SUN8I_HDMI_PHY_ANA_CFG3_REG_AMP(13);
 297         }
 298
 299         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_ANA_CFG1_REG,
 300                            SUN8I_HDMI_PHY_ANA_CFG1_TXEN_MASK, 0);
 301
 302         /*
 303          * NOTE: We have to be careful not to overwrite PHY parent
 304          * clock selection bit and clock divider.
 305          */
 306         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_PLL_CFG1_REG,
 307                            (u32)~SUN8I_HDMI_PHY_PLL_CFG1_CKIN_SEL_MSK,
 308                            pll_cfg1_init);
 309         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_PLL_CFG2_REG,
 310                            (u32)~SUN8I_HDMI_PHY_PLL_CFG2_PREDIV_MSK,
 311                            pll_cfg2_init);
 312         usleep_range(10000, 15000);
 313         regmap_write(phy->regs, SUN8I_HDMI_PHY_PLL_CFG3_REG,
 314                      SUN8I_HDMI_PHY_PLL_CFG3_SOUT_DIV2);
 315         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_PLL_CFG1_REG,
 316                            SUN8I_HDMI_PHY_PLL_CFG1_PLLEN,
 317                            SUN8I_HDMI_PHY_PLL_CFG1_PLLEN);
 318         msleep(100);
 319
 320         /* get B value */
 321         regmap_read(phy->regs, SUN8I_HDMI_PHY_ANA_STS_REG, &val);
 322         val = (val & SUN8I_HDMI_PHY_ANA_STS_B_OUT_MSK) >>
 323                 SUN8I_HDMI_PHY_ANA_STS_B_OUT_SHIFT;
 324         val = min(val + b_offset, (u32)0x3f);
 325
 326         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_PLL_CFG1_REG,
 327                            SUN8I_HDMI_PHY_PLL_CFG1_REG_OD1 |
 328                            SUN8I_HDMI_PHY_PLL_CFG1_REG_OD,
 329                            SUN8I_HDMI_PHY_PLL_CFG1_REG_OD1 |
 330                            SUN8I_HDMI_PHY_PLL_CFG1_REG_OD);
 331         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_PLL_CFG1_REG,
 332                            SUN8I_HDMI_PHY_PLL_CFG1_B_IN_MSK,
 333                            val << SUN8I_HDMI_PHY_PLL_CFG1_B_IN_SHIFT);
 334         msleep(100);
 335         regmap_write(phy->regs, SUN8I_HDMI_PHY_ANA_CFG1_REG, ana_cfg1_end);
 336         regmap_write(phy->regs, SUN8I_HDMI_PHY_ANA_CFG2_REG, ana_cfg2_init);
 337         regmap_write(phy->regs, SUN8I_HDMI_PHY_ANA_CFG3_REG, ana_cfg3_init);
 338
 339         return 0;
 340 }
 341
 342 static int sun8i_hdmi_phy_config(struct dw_hdmi *hdmi, void *data,
 343                                  struct drm_display_mode *mode)
 344 {
 345         struct sun8i_hdmi_phy *phy = (struct sun8i_hdmi_phy *)data;
 346         u32 val = 0;
 347
 348         if (mode->flags & DRM_MODE_FLAG_NHSYNC)
 349                 val |= SUN8I_HDMI_PHY_DBG_CTRL_POL_NHSYNC;
 350
 351         if (mode->flags & DRM_MODE_FLAG_NVSYNC)
 352                 val |= SUN8I_HDMI_PHY_DBG_CTRL_POL_NVSYNC;
 353
 354         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_DBG_CTRL_REG,
 355                            SUN8I_HDMI_PHY_DBG_CTRL_POL_MASK, val);
 356
 357         if (phy->variant->has_phy_clk)
 358                 clk_set_rate(phy->clk_phy, mode->crtc_clock * 1000);
 359
 360         return phy->variant->phy_config(hdmi, phy, mode->crtc_clock * 1000);
 361 };
 362
 363 static void sun8i_hdmi_phy_disable_a83t(struct dw_hdmi *hdmi,
 364                                         struct sun8i_hdmi_phy *phy)
 365 {
 366         dw_hdmi_phy_gen2_txpwron(hdmi, 0);
 367         dw_hdmi_phy_gen2_pddq(hdmi, 1);
 368
 369         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_REXT_CTRL_REG,
 370                            SUN8I_HDMI_PHY_REXT_CTRL_REXT_EN, 0);
 371 }
 372
 373 static void sun8i_hdmi_phy_disable_h3(struct dw_hdmi *hdmi,
 374                                       struct sun8i_hdmi_phy *phy)
 375 {
 376         regmap_write(phy->regs, SUN8I_HDMI_PHY_ANA_CFG1_REG,
 377                      SUN8I_HDMI_PHY_ANA_CFG1_LDOEN |
 378                      SUN8I_HDMI_PHY_ANA_CFG1_ENVBS |
 379                      SUN8I_HDMI_PHY_ANA_CFG1_ENBI);
 380         regmap_write(phy->regs, SUN8I_HDMI_PHY_PLL_CFG1_REG, 0);
 381 }
 382
 383 static void sun8i_hdmi_phy_disable(struct dw_hdmi *hdmi, void *data)
 384 {
 385         struct sun8i_hdmi_phy *phy = (struct sun8i_hdmi_phy *)data;
 386
 387         phy->variant->phy_disable(hdmi, phy);
 388 }
 389
 390 static const struct dw_hdmi_phy_ops sun8i_hdmi_phy_ops = {
 391         .init = &sun8i_hdmi_phy_config,
 392         .disable = &sun8i_hdmi_phy_disable,
 393         .read_hpd = &dw_hdmi_phy_read_hpd,
 394         .update_hpd = &dw_hdmi_phy_update_hpd,
 395         .setup_hpd = &dw_hdmi_phy_setup_hpd,
 396 };
 397
 398 static void sun8i_hdmi_phy_unlock(struct sun8i_hdmi_phy *phy)
 399 {
 400         /* enable read access to HDMI controller */
 401         regmap_write(phy->regs, SUN8I_HDMI_PHY_READ_EN_REG,
 402                      SUN8I_HDMI_PHY_READ_EN_MAGIC);
 403
 404         /* unscramble register offsets */
 405         regmap_write(phy->regs, SUN8I_HDMI_PHY_UNSCRAMBLE_REG,
 406                      SUN8I_HDMI_PHY_UNSCRAMBLE_MAGIC);
 407 }
 408
 409 static void sun50i_hdmi_phy_init_h6(struct sun8i_hdmi_phy *phy)
 410 {
 411         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_REXT_CTRL_REG,
 412                            SUN8I_HDMI_PHY_REXT_CTRL_REXT_EN,
 413                            SUN8I_HDMI_PHY_REXT_CTRL_REXT_EN);
 414
 415         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_REXT_CTRL_REG,
 416                            0xffff0000, 0x80c00000);
 417 }
 418
 419 static void sun8i_hdmi_phy_init_a83t(struct sun8i_hdmi_phy *phy)
 420 {
 421         sun8i_hdmi_phy_unlock(phy);
 422
 423         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_DBG_CTRL_REG,
 424                            SUN8I_HDMI_PHY_DBG_CTRL_PX_LOCK,
 425                            SUN8I_HDMI_PHY_DBG_CTRL_PX_LOCK);
 426
 427         /*
 428          * Set PHY I2C address. It must match to the address set by
 429          * dw_hdmi_phy_set_slave_addr().
 430          */
 431         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_DBG_CTRL_REG,
 432                            SUN8I_HDMI_PHY_DBG_CTRL_ADDR_MASK,
 433                            SUN8I_HDMI_PHY_DBG_CTRL_ADDR(I2C_ADDR));
 434 }
 435
 436 static void sun8i_hdmi_phy_init_h3(struct sun8i_hdmi_phy *phy)
 437 {
 438         unsigned int val;
 439
 440         sun8i_hdmi_phy_unlock(phy);
 441
 442         regmap_write(phy->regs, SUN8I_HDMI_PHY_ANA_CFG1_REG, 0);
 443         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_ANA_CFG1_REG,
 444                            SUN8I_HDMI_PHY_ANA_CFG1_ENBI,
 445                            SUN8I_HDMI_PHY_ANA_CFG1_ENBI);
 446         udelay(5);
 447         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_ANA_CFG1_REG,
 448                            SUN8I_HDMI_PHY_ANA_CFG1_TMDSCLK_EN,
 449                            SUN8I_HDMI_PHY_ANA_CFG1_TMDSCLK_EN);
 450         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_ANA_CFG1_REG,
 451                            SUN8I_HDMI_PHY_ANA_CFG1_ENVBS,
 452                            SUN8I_HDMI_PHY_ANA_CFG1_ENVBS);
 453         usleep_range(10, 20);
 454         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_ANA_CFG1_REG,
 455                            SUN8I_HDMI_PHY_ANA_CFG1_LDOEN,
 456                            SUN8I_HDMI_PHY_ANA_CFG1_LDOEN);
 457         udelay(5);
 458         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_ANA_CFG1_REG,
 459                            SUN8I_HDMI_PHY_ANA_CFG1_CKEN,
 460                            SUN8I_HDMI_PHY_ANA_CFG1_CKEN);
 461         usleep_range(40, 100);
 462         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_ANA_CFG1_REG,
 463                            SUN8I_HDMI_PHY_ANA_CFG1_ENRCAL,
 464                            SUN8I_HDMI_PHY_ANA_CFG1_ENRCAL);
 465         usleep_range(100, 200);
 466         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_ANA_CFG1_REG,
 467                            SUN8I_HDMI_PHY_ANA_CFG1_ENCALOG,
 468                            SUN8I_HDMI_PHY_ANA_CFG1_ENCALOG);
 469         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_ANA_CFG1_REG,
 470                            SUN8I_HDMI_PHY_ANA_CFG1_ENP2S_TMDS0 |
 471                            SUN8I_HDMI_PHY_ANA_CFG1_ENP2S_TMDS1 |
 472                            SUN8I_HDMI_PHY_ANA_CFG1_ENP2S_TMDS2,
 473                            SUN8I_HDMI_PHY_ANA_CFG1_ENP2S_TMDS0 |
 474                            SUN8I_HDMI_PHY_ANA_CFG1_ENP2S_TMDS1 |
 475                            SUN8I_HDMI_PHY_ANA_CFG1_ENP2S_TMDS2);
 476
 477         /* wait for calibration to finish */
 478         regmap_read_poll_timeout(phy->regs, SUN8I_HDMI_PHY_ANA_STS_REG, val,
 479                                  (val & SUN8I_HDMI_PHY_ANA_STS_RCALEND2D),
 480                                  100, 2000);
 481
 482         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_ANA_CFG1_REG,
 483                            SUN8I_HDMI_PHY_ANA_CFG1_ENP2S_TMDSCLK,
 484                            SUN8I_HDMI_PHY_ANA_CFG1_ENP2S_TMDSCLK);
 485         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_ANA_CFG1_REG,
 486                            SUN8I_HDMI_PHY_ANA_CFG1_BIASEN_TMDS0 |
 487                            SUN8I_HDMI_PHY_ANA_CFG1_BIASEN_TMDS1 |
 488                            SUN8I_HDMI_PHY_ANA_CFG1_BIASEN_TMDS2 |
 489                            SUN8I_HDMI_PHY_ANA_CFG1_BIASEN_TMDSCLK,
 490                            SUN8I_HDMI_PHY_ANA_CFG1_BIASEN_TMDS0 |
 491                            SUN8I_HDMI_PHY_ANA_CFG1_BIASEN_TMDS1 |
 492                            SUN8I_HDMI_PHY_ANA_CFG1_BIASEN_TMDS2 |
 493                            SUN8I_HDMI_PHY_ANA_CFG1_BIASEN_TMDSCLK);
 494
 495         /* enable DDC communication */
 496         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_ANA_CFG3_REG,
 497                            SUN8I_HDMI_PHY_ANA_CFG3_SCLEN |
 498                            SUN8I_HDMI_PHY_ANA_CFG3_SDAEN,
 499                            SUN8I_HDMI_PHY_ANA_CFG3_SCLEN |
 500                            SUN8I_HDMI_PHY_ANA_CFG3_SDAEN);
 501
 502         /* reset PHY PLL clock parent */
 503         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_PLL_CFG1_REG,
 504                            SUN8I_HDMI_PHY_PLL_CFG1_CKIN_SEL_MSK, 0);
 505
 506         /* set HW control of CEC pins */
 507         regmap_write(phy->regs, SUN8I_HDMI_PHY_CEC_REG, 0);
 508
 509         /* read calibration data */
 510         regmap_read(phy->regs, SUN8I_HDMI_PHY_ANA_STS_REG, &val);
 511         phy->rcal = (val & SUN8I_HDMI_PHY_ANA_STS_RCAL_MASK) >> 2;
 512 }
 513
 514 void sun8i_hdmi_phy_init(struct sun8i_hdmi_phy *phy)
 515 {
 516         phy->variant->phy_init(phy);
 517 }
 518
 519 void sun8i_hdmi_phy_set_ops(struct sun8i_hdmi_phy *phy,
 520                             struct dw_hdmi_plat_data *plat_data)
 521 {
 522         struct sun8i_hdmi_phy_variant *variant = phy->variant;
 523
 524         if (variant->is_custom_phy) {
 525                 plat_data->phy_ops = &sun8i_hdmi_phy_ops;
 526                 plat_data->phy_name = "sun8i_dw_hdmi_phy";
 527                 plat_data->phy_data = phy;
 528         } else {
 529                 plat_data->mpll_cfg = variant->mpll_cfg;
 530                 plat_data->cur_ctr = variant->cur_ctr;
 531                 plat_data->phy_config = variant->phy_cfg;
 532         }
 533 }
 534
 535 static struct regmap_config sun8i_hdmi_phy_regmap_config = {
 536         .reg_bits       = 32,
 537         .val_bits       = 32,
 538         .reg_stride     = 4,
 539         .max_register   = SUN8I_HDMI_PHY_CEC_REG,
 540         .name           = "phy"
 541 };
 542
 543 static const struct sun8i_hdmi_phy_variant sun8i_a83t_hdmi_phy = {
 544         .is_custom_phy = true,
 545         .phy_init = &sun8i_hdmi_phy_init_a83t,
 546         .phy_disable = &sun8i_hdmi_phy_disable_a83t,
 547         .phy_config = &sun8i_hdmi_phy_config_a83t,
 548 };
 549
 550 static const struct sun8i_hdmi_phy_variant sun8i_h3_hdmi_phy = {
 551         .has_phy_clk = true,
 552         .is_custom_phy = true,
 553         .phy_init = &sun8i_hdmi_phy_init_h3,
 554         .phy_disable = &sun8i_hdmi_phy_disable_h3,
 555         .phy_config = &sun8i_hdmi_phy_config_h3,
 556 };
 557
 558 static const struct sun8i_hdmi_phy_variant sun8i_r40_hdmi_phy = {
 559         .has_phy_clk = true,
 560         .has_second_pll = true,
 561         .is_custom_phy = true,
 562         .phy_init = &sun8i_hdmi_phy_init_h3,
 563         .phy_disable = &sun8i_hdmi_phy_disable_h3,
 564         .phy_config = &sun8i_hdmi_phy_config_h3,
 565 };
 566
 567 static const struct sun8i_hdmi_phy_variant sun50i_a64_hdmi_phy = {
 568         .has_phy_clk = true,
 569         .is_custom_phy = true,
 570         .phy_init = &sun8i_hdmi_phy_init_h3,
 571         .phy_disable = &sun8i_hdmi_phy_disable_h3,
 572         .phy_config = &sun8i_hdmi_phy_config_h3,
 573 };
 574
 575 static const struct sun8i_hdmi_phy_variant sun50i_h6_hdmi_phy = {
 576         .cur_ctr  = sun50i_h6_cur_ctr,
 577         .mpll_cfg = sun50i_h6_mpll_cfg,
 578         .phy_cfg  = sun50i_h6_phy_config,
 579         .phy_init = &sun50i_hdmi_phy_init_h6,
 580 };
 581
 582 static const struct of_device_id sun8i_hdmi_phy_of_table[] = {
 583         {
 584                 .compatible = "allwinner,sun8i-a83t-hdmi-phy",
 585                 .data = &sun8i_a83t_hdmi_phy,
 586         },
 587         {
 588                 .compatible = "allwinner,sun8i-h3-hdmi-phy",
 589                 .data = &sun8i_h3_hdmi_phy,
 590         },
 591         {
 592                 .compatible = "allwinner,sun8i-r40-hdmi-phy",
 593                 .data = &sun8i_r40_hdmi_phy,
 594         },
 595         {
 596                 .compatible = "allwinner,sun50i-a64-hdmi-phy",
 597                 .data = &sun50i_a64_hdmi_phy,
 598         },
 599         {
 600                 .compatible = "allwinner,sun50i-h6-hdmi-phy",
 601                 .data = &sun50i_h6_hdmi_phy,
 602         },
 603         { /* sentinel */ }
 604 };
 605
 606 int sun8i_hdmi_phy_probe(struct sun8i_dw_hdmi *hdmi, struct device_node *node)
 607 {
 608         const struct of_device_id *match;
 609         struct device *dev = hdmi->dev;
 610         struct sun8i_hdmi_phy *phy;
 611         struct resource res;
 612         void __iomem *regs;
 613         int ret;
 614
 615         match = of_match_node(sun8i_hdmi_phy_of_table, node);
 616         if (!match) {
 617                 dev_err(dev, "Incompatible HDMI PHY\n");
 618                 return -EINVAL;
 619         }
 620
 621         phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL);
 622         if (!phy)
 623                 return -ENOMEM;
 624
 625         phy->variant = (struct sun8i_hdmi_phy_variant *)match->data;
 626
 627         ret = of_address_to_resource(node, 0, &res);
 628         if (ret) {
 629                 dev_err(dev, "phy: Couldn't get our resources\n");
 630                 return ret;
 631         }
 632
 633         regs = devm_ioremap_resource(dev, &res);
 634         if (IS_ERR(regs)) {
 635                 dev_err(dev, "Couldn't map the HDMI PHY registers\n");
 636                 return PTR_ERR(regs);
 637         }
 638
 639         phy->regs = devm_regmap_init_mmio(dev, regs,
 640                                           &sun8i_hdmi_phy_regmap_config);
 641         if (IS_ERR(phy->regs)) {
 642                 dev_err(dev, "Couldn't create the HDMI PHY regmap\n");
 643                 return PTR_ERR(phy->regs);
 644         }
 645
 646         phy->clk_bus = of_clk_get_by_name(node, "bus");
 647         if (IS_ERR(phy->clk_bus)) {
 648                 dev_err(dev, "Could not get bus clock\n");
 649                 return PTR_ERR(phy->clk_bus);
 650         }
 651
 652         phy->clk_mod = of_clk_get_by_name(node, "mod");
 653         if (IS_ERR(phy->clk_mod)) {
 654                 dev_err(dev, "Could not get mod clock\n");
 655                 ret = PTR_ERR(phy->clk_mod);
 656                 goto err_put_clk_bus;
 657         }
 658
 659         if (phy->variant->has_phy_clk) {
 660                 phy->clk_pll0 = of_clk_get_by_name(node, "pll-0");
 661                 if (IS_ERR(phy->clk_pll0)) {
 662                         dev_err(dev, "Could not get pll-0 clock\n");
 663                         ret = PTR_ERR(phy->clk_pll0);
 664                         goto err_put_clk_mod;
 665                 }
 666
 667                 if (phy->variant->has_second_pll) {
 668                         phy->clk_pll1 = of_clk_get_by_name(node, "pll-1");
 669                         if (IS_ERR(phy->clk_pll1)) {
 670                                 dev_err(dev, "Could not get pll-1 clock\n");
 671                                 ret = PTR_ERR(phy->clk_pll1);
 672                                 goto err_put_clk_pll0;
 673                         }
 674                 }
 675
 676                 ret = sun8i_phy_clk_create(phy, dev,
 677                                            phy->variant->has_second_pll);
 678                 if (ret) {
 679                         dev_err(dev, "Couldn't create the PHY clock\n");
 680                         goto err_put_clk_pll1;
 681                 }
 682
 683                 clk_prepare_enable(phy->clk_phy);
 684         }
 685
 686         phy->rst_phy = of_reset_control_get_shared(node, "phy");
 687         if (IS_ERR(phy->rst_phy)) {
 688                 dev_err(dev, "Could not get phy reset control\n");
 689                 ret = PTR_ERR(phy->rst_phy);
 690                 goto err_disable_clk_phy;
 691         }
 692
 693         ret = reset_control_deassert(phy->rst_phy);
 694         if (ret) {
 695                 dev_err(dev, "Cannot deassert phy reset control: %d\n", ret);
 696                 goto err_put_rst_phy;
 697         }
 698
 699         ret = clk_prepare_enable(phy->clk_bus);
 700         if (ret) {
 701                 dev_err(dev, "Cannot enable bus clock: %d\n", ret);
 702                 goto err_deassert_rst_phy;
 703         }
 704
 705         ret = clk_prepare_enable(phy->clk_mod);
 706         if (ret) {
 707                 dev_err(dev, "Cannot enable mod clock: %d\n", ret);
 708                 goto err_disable_clk_bus;
 709         }
 710
 711         hdmi->phy = phy;
 712
 713         return 0;
 714
 715 err_disable_clk_bus:
 716         clk_disable_unprepare(phy->clk_bus);
 717 err_deassert_rst_phy:
 718         reset_control_assert(phy->rst_phy);
 719 err_put_rst_phy:
 720         reset_control_put(phy->rst_phy);
 721 err_disable_clk_phy:
 722         clk_disable_unprepare(phy->clk_phy);
 723 err_put_clk_pll1:
 724         clk_put(phy->clk_pll1);
 725 err_put_clk_pll0:
 726         clk_put(phy->clk_pll0);
 727 err_put_clk_mod:
 728         clk_put(phy->clk_mod);
 729 err_put_clk_bus:
 730         clk_put(phy->clk_bus);
 731
 732         return ret;
 733 }
 734
 735 void sun8i_hdmi_phy_remove(struct sun8i_dw_hdmi *hdmi)
 736 {
 737         struct sun8i_hdmi_phy *phy = hdmi->phy;
 738
 739         clk_disable_unprepare(phy->clk_mod);
 740         clk_disable_unprepare(phy->clk_bus);
 741         clk_disable_unprepare(phy->clk_phy);
 742
 743         reset_control_assert(phy->rst_phy);
 744
 745         reset_control_put(phy->rst_phy);
 746
 747         clk_put(phy->clk_pll0);
 748         clk_put(phy->clk_pll1);
 749         clk_put(phy->clk_mod);
 750         clk_put(phy->clk_bus);
 751 }