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 #include <linux/of_platform.h>
   9
  10 #include "sun8i_dw_hdmi.h"
  11
  12 /*
  13  * Address can be actually any value. Here is set to same value as
  14  * it is set in BSP driver.
  15  */
  16 #define I2C_ADDR        0x69
  17
  18 static const struct dw_hdmi_mpll_config sun50i_h6_mpll_cfg[] = {
  19         {
  20                 30666000, {
  21                         { 0x00b3, 0x0000 },
  22                         { 0x2153, 0x0000 },
  23                         { 0x40f3, 0x0000 },
  24                 },
  25         },  {
  26                 36800000, {
  27                         { 0x00b3, 0x0000 },
  28                         { 0x2153, 0x0000 },
  29                         { 0x40a2, 0x0001 },
  30                 },
  31         },  {
  32                 46000000, {
  33                         { 0x00b3, 0x0000 },
  34                         { 0x2142, 0x0001 },
  35                         { 0x40a2, 0x0001 },
  36                 },
  37         },  {
  38                 61333000, {
  39                         { 0x0072, 0x0001 },
  40                         { 0x2142, 0x0001 },
  41                         { 0x40a2, 0x0001 },
  42                 },
  43         },  {
  44                 73600000, {
  45                         { 0x0072, 0x0001 },
  46                         { 0x2142, 0x0001 },
  47                         { 0x4061, 0x0002 },
  48                 },
  49         },  {
  50                 92000000, {
  51                         { 0x0072, 0x0001 },
  52                         { 0x2145, 0x0002 },
  53                         { 0x4061, 0x0002 },
  54                 },
  55         },  {
  56                 122666000, {
  57                         { 0x0051, 0x0002 },
  58                         { 0x2145, 0x0002 },
  59                         { 0x4061, 0x0002 },
  60                 },
  61         },  {
  62                 147200000, {
  63                         { 0x0051, 0x0002 },
  64                         { 0x2145, 0x0002 },
  65                         { 0x4064, 0x0003 },
  66                 },
  67         },  {
  68                 184000000, {
  69                         { 0x0051, 0x0002 },
  70                         { 0x214c, 0x0003 },
  71                         { 0x4064, 0x0003 },
  72                 },
  73         },  {
  74                 226666000, {
  75                         { 0x0040, 0x0003 },
  76                         { 0x214c, 0x0003 },
  77                         { 0x4064, 0x0003 },
  78                 },
  79         },  {
  80                 272000000, {
  81                         { 0x0040, 0x0003 },
  82                         { 0x214c, 0x0003 },
  83                         { 0x5a64, 0x0003 },
  84                 },
  85         },  {
  86                 340000000, {
  87                         { 0x0040, 0x0003 },
  88                         { 0x3b4c, 0x0003 },
  89                         { 0x5a64, 0x0003 },
  90                 },
  91         },  {
  92                 594000000, {
  93                         { 0x1a40, 0x0003 },
  94                         { 0x3b4c, 0x0003 },
  95                         { 0x5a64, 0x0003 },
  96                 },
  97         }, {
  98                 ~0UL, {
  99                         { 0x0000, 0x0000 },
 100                         { 0x0000, 0x0000 },
 101                         { 0x0000, 0x0000 },
 102                 },
 103         }
 104 };
 105
 106 static const struct dw_hdmi_curr_ctrl sun50i_h6_cur_ctr[] = {
 107         /* pixelclk    bpp8    bpp10   bpp12 */
 108         { 27000000,  { 0x0012, 0x0000, 0x0000 }, },
 109         { 74250000,  { 0x0013, 0x001a, 0x001b }, },
 110         { 148500000, { 0x0019, 0x0033, 0x0034 }, },
 111         { 297000000, { 0x0019, 0x001b, 0x001b }, },
 112         { 594000000, { 0x0010, 0x001b, 0x001b }, },
 113         { ~0UL,      { 0x0000, 0x0000, 0x0000 }, }
 114 };
 115
 116 static const struct dw_hdmi_phy_config sun50i_h6_phy_config[] = {
 117         /*pixelclk   symbol   term   vlev*/
 118         { 27000000,  0x8009, 0x0007, 0x02b0 },
 119         { 74250000,  0x8009, 0x0006, 0x022d },
 120         { 148500000, 0x8029, 0x0006, 0x0270 },
 121         { 297000000, 0x8039, 0x0005, 0x01ab },
 122         { 594000000, 0x8029, 0x0000, 0x008a },
 123         { ~0UL,      0x0000, 0x0000, 0x0000}
 124 };
 125
 126 static int sun8i_hdmi_phy_config_a83t(struct dw_hdmi *hdmi,
 127                                       struct sun8i_hdmi_phy *phy,
 128                                       unsigned int clk_rate)
 129 {
 130         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_REXT_CTRL_REG,
 131                            SUN8I_HDMI_PHY_REXT_CTRL_REXT_EN,
 132                            SUN8I_HDMI_PHY_REXT_CTRL_REXT_EN);
 133
 134         /* power down */
 135         dw_hdmi_phy_gen2_txpwron(hdmi, 0);
 136         dw_hdmi_phy_gen2_pddq(hdmi, 1);
 137
 138         dw_hdmi_phy_gen2_reset(hdmi);
 139
 140         dw_hdmi_phy_gen2_pddq(hdmi, 0);
 141
 142         dw_hdmi_phy_i2c_set_addr(hdmi, I2C_ADDR);
 143
 144         /*
 145          * Values are taken from BSP HDMI driver. Although AW didn't
 146          * release any documentation, explanation of this values can
 147          * be found in i.MX 6Dual/6Quad Reference Manual.
 148          */
 149         if (clk_rate <= 27000000) {
 150                 dw_hdmi_phy_i2c_write(hdmi, 0x01e0, 0x06);
 151                 dw_hdmi_phy_i2c_write(hdmi, 0x0000, 0x15);
 152                 dw_hdmi_phy_i2c_write(hdmi, 0x08da, 0x10);
 153                 dw_hdmi_phy_i2c_write(hdmi, 0x0007, 0x19);
 154                 dw_hdmi_phy_i2c_write(hdmi, 0x0318, 0x0e);
 155                 dw_hdmi_phy_i2c_write(hdmi, 0x8009, 0x09);
 156         } else if (clk_rate <= 74250000) {
 157                 dw_hdmi_phy_i2c_write(hdmi, 0x0540, 0x06);
 158                 dw_hdmi_phy_i2c_write(hdmi, 0x0005, 0x15);
 159                 dw_hdmi_phy_i2c_write(hdmi, 0x0000, 0x10);
 160                 dw_hdmi_phy_i2c_write(hdmi, 0x0007, 0x19);
 161                 dw_hdmi_phy_i2c_write(hdmi, 0x02b5, 0x0e);
 162                 dw_hdmi_phy_i2c_write(hdmi, 0x8009, 0x09);
 163         } else if (clk_rate <= 148500000) {
 164                 dw_hdmi_phy_i2c_write(hdmi, 0x04a0, 0x06);
 165                 dw_hdmi_phy_i2c_write(hdmi, 0x000a, 0x15);
 166                 dw_hdmi_phy_i2c_write(hdmi, 0x0000, 0x10);
 167                 dw_hdmi_phy_i2c_write(hdmi, 0x0002, 0x19);
 168                 dw_hdmi_phy_i2c_write(hdmi, 0x0021, 0x0e);
 169                 dw_hdmi_phy_i2c_write(hdmi, 0x8029, 0x09);
 170         } else {
 171                 dw_hdmi_phy_i2c_write(hdmi, 0x0000, 0x06);
 172                 dw_hdmi_phy_i2c_write(hdmi, 0x000f, 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, 0x0000, 0x0e);
 176                 dw_hdmi_phy_i2c_write(hdmi, 0x802b, 0x09);
 177         }
 178
 179         dw_hdmi_phy_i2c_write(hdmi, 0x0000, 0x1e);
 180         dw_hdmi_phy_i2c_write(hdmi, 0x0000, 0x13);
 181         dw_hdmi_phy_i2c_write(hdmi, 0x0000, 0x17);
 182
 183         dw_hdmi_phy_gen2_txpwron(hdmi, 1);
 184
 185         return 0;
 186 }
 187
 188 static int sun8i_hdmi_phy_config_h3(struct dw_hdmi *hdmi,
 189                                     struct sun8i_hdmi_phy *phy,
 190                                     unsigned int clk_rate)
 191 {
 192         u32 pll_cfg1_init;
 193         u32 pll_cfg2_init;
 194         u32 ana_cfg1_end;
 195         u32 ana_cfg2_init;
 196         u32 ana_cfg3_init;
 197         u32 b_offset = 0;
 198         u32 val;
 199
 200         /* bandwidth / frequency independent settings */
 201
 202         pll_cfg1_init = SUN8I_HDMI_PHY_PLL_CFG1_LDO2_EN |
 203                         SUN8I_HDMI_PHY_PLL_CFG1_LDO1_EN |
 204                         SUN8I_HDMI_PHY_PLL_CFG1_LDO_VSET(7) |
 205                         SUN8I_HDMI_PHY_PLL_CFG1_UNKNOWN(1) |
 206                         SUN8I_HDMI_PHY_PLL_CFG1_PLLDBEN |
 207                         SUN8I_HDMI_PHY_PLL_CFG1_CS |
 208                         SUN8I_HDMI_PHY_PLL_CFG1_CP_S(2) |
 209                         SUN8I_HDMI_PHY_PLL_CFG1_CNT_INT(63) |
 210                         SUN8I_HDMI_PHY_PLL_CFG1_BWS;
 211
 212         pll_cfg2_init = SUN8I_HDMI_PHY_PLL_CFG2_SV_H |
 213                         SUN8I_HDMI_PHY_PLL_CFG2_VCOGAIN_EN |
 214                         SUN8I_HDMI_PHY_PLL_CFG2_SDIV2;
 215
 216         ana_cfg1_end = SUN8I_HDMI_PHY_ANA_CFG1_REG_SVBH(1) |
 217                        SUN8I_HDMI_PHY_ANA_CFG1_AMP_OPT |
 218                        SUN8I_HDMI_PHY_ANA_CFG1_EMP_OPT |
 219                        SUN8I_HDMI_PHY_ANA_CFG1_AMPCK_OPT |
 220                        SUN8I_HDMI_PHY_ANA_CFG1_EMPCK_OPT |
 221                        SUN8I_HDMI_PHY_ANA_CFG1_ENRCAL |
 222                        SUN8I_HDMI_PHY_ANA_CFG1_ENCALOG |
 223                        SUN8I_HDMI_PHY_ANA_CFG1_REG_SCKTMDS |
 224                        SUN8I_HDMI_PHY_ANA_CFG1_TMDSCLK_EN |
 225                        SUN8I_HDMI_PHY_ANA_CFG1_TXEN_MASK |
 226                        SUN8I_HDMI_PHY_ANA_CFG1_TXEN_ALL |
 227                        SUN8I_HDMI_PHY_ANA_CFG1_BIASEN_TMDSCLK |
 228                        SUN8I_HDMI_PHY_ANA_CFG1_BIASEN_TMDS2 |
 229                        SUN8I_HDMI_PHY_ANA_CFG1_BIASEN_TMDS1 |
 230                        SUN8I_HDMI_PHY_ANA_CFG1_BIASEN_TMDS0 |
 231                        SUN8I_HDMI_PHY_ANA_CFG1_ENP2S_TMDS2 |
 232                        SUN8I_HDMI_PHY_ANA_CFG1_ENP2S_TMDS1 |
 233                        SUN8I_HDMI_PHY_ANA_CFG1_ENP2S_TMDS0 |
 234                        SUN8I_HDMI_PHY_ANA_CFG1_CKEN |
 235                        SUN8I_HDMI_PHY_ANA_CFG1_LDOEN |
 236                        SUN8I_HDMI_PHY_ANA_CFG1_ENVBS |
 237                        SUN8I_HDMI_PHY_ANA_CFG1_ENBI;
 238
 239         ana_cfg2_init = SUN8I_HDMI_PHY_ANA_CFG2_M_EN |
 240                         SUN8I_HDMI_PHY_ANA_CFG2_REG_DENCK |
 241                         SUN8I_HDMI_PHY_ANA_CFG2_REG_DEN |
 242                         SUN8I_HDMI_PHY_ANA_CFG2_REG_CKSS(1) |
 243                         SUN8I_HDMI_PHY_ANA_CFG2_REG_CSMPS(1);
 244
 245         ana_cfg3_init = SUN8I_HDMI_PHY_ANA_CFG3_REG_WIRE(0x3e0) |
 246                         SUN8I_HDMI_PHY_ANA_CFG3_SDAEN |
 247                         SUN8I_HDMI_PHY_ANA_CFG3_SCLEN;
 248
 249         /* bandwidth / frequency dependent settings */
 250         if (clk_rate <= 27000000) {
 251                 pll_cfg1_init |= SUN8I_HDMI_PHY_PLL_CFG1_HV_IS_33 |
 252                                  SUN8I_HDMI_PHY_PLL_CFG1_CNT_INT(32);
 253                 pll_cfg2_init |= SUN8I_HDMI_PHY_PLL_CFG2_VCO_S(4) |
 254                                  SUN8I_HDMI_PHY_PLL_CFG2_S(4);
 255                 ana_cfg1_end |= SUN8I_HDMI_PHY_ANA_CFG1_REG_CALSW;
 256                 ana_cfg2_init |= SUN8I_HDMI_PHY_ANA_CFG2_REG_SLV(4) |
 257                                  SUN8I_HDMI_PHY_ANA_CFG2_REG_RESDI(phy->rcal);
 258                 ana_cfg3_init |= SUN8I_HDMI_PHY_ANA_CFG3_REG_AMPCK(3) |
 259                                  SUN8I_HDMI_PHY_ANA_CFG3_REG_AMP(5);
 260         } else if (clk_rate <= 74250000) {
 261                 pll_cfg1_init |= SUN8I_HDMI_PHY_PLL_CFG1_HV_IS_33 |
 262                                  SUN8I_HDMI_PHY_PLL_CFG1_CNT_INT(32);
 263                 pll_cfg2_init |= SUN8I_HDMI_PHY_PLL_CFG2_VCO_S(4) |
 264                                  SUN8I_HDMI_PHY_PLL_CFG2_S(5);
 265                 ana_cfg1_end |= SUN8I_HDMI_PHY_ANA_CFG1_REG_CALSW;
 266                 ana_cfg2_init |= SUN8I_HDMI_PHY_ANA_CFG2_REG_SLV(4) |
 267                                  SUN8I_HDMI_PHY_ANA_CFG2_REG_RESDI(phy->rcal);
 268                 ana_cfg3_init |= SUN8I_HDMI_PHY_ANA_CFG3_REG_AMPCK(5) |
 269                                  SUN8I_HDMI_PHY_ANA_CFG3_REG_AMP(7);
 270         } else if (clk_rate <= 148500000) {
 271                 pll_cfg1_init |= SUN8I_HDMI_PHY_PLL_CFG1_HV_IS_33 |
 272                                  SUN8I_HDMI_PHY_PLL_CFG1_CNT_INT(32);
 273                 pll_cfg2_init |= SUN8I_HDMI_PHY_PLL_CFG2_VCO_S(4) |
 274                                  SUN8I_HDMI_PHY_PLL_CFG2_S(6);
 275                 ana_cfg2_init |= SUN8I_HDMI_PHY_ANA_CFG2_REG_BIGSWCK |
 276                                  SUN8I_HDMI_PHY_ANA_CFG2_REG_BIGSW |
 277                                  SUN8I_HDMI_PHY_ANA_CFG2_REG_SLV(2);
 278                 ana_cfg3_init |= SUN8I_HDMI_PHY_ANA_CFG3_REG_AMPCK(7) |
 279                                  SUN8I_HDMI_PHY_ANA_CFG3_REG_AMP(9);
 280         } else {
 281                 b_offset = 2;
 282                 pll_cfg1_init |= SUN8I_HDMI_PHY_PLL_CFG1_CNT_INT(63);
 283                 pll_cfg2_init |= SUN8I_HDMI_PHY_PLL_CFG2_VCO_S(6) |
 284                                  SUN8I_HDMI_PHY_PLL_CFG2_S(7);
 285                 ana_cfg2_init |= SUN8I_HDMI_PHY_ANA_CFG2_REG_BIGSWCK |
 286                                  SUN8I_HDMI_PHY_ANA_CFG2_REG_BIGSW |
 287                                  SUN8I_HDMI_PHY_ANA_CFG2_REG_SLV(4);
 288                 ana_cfg3_init |= SUN8I_HDMI_PHY_ANA_CFG3_REG_AMPCK(9) |
 289                                  SUN8I_HDMI_PHY_ANA_CFG3_REG_AMP(13) |
 290                                  SUN8I_HDMI_PHY_ANA_CFG3_REG_EMP(3);
 291         }
 292
 293         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_ANA_CFG1_REG,
 294                            SUN8I_HDMI_PHY_ANA_CFG1_TXEN_MASK, 0);
 295
 296         /*
 297          * NOTE: We have to be careful not to overwrite PHY parent
 298          * clock selection bit and clock divider.
 299          */
 300         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_PLL_CFG1_REG,
 301                            (u32)~SUN8I_HDMI_PHY_PLL_CFG1_CKIN_SEL_MSK,
 302                            pll_cfg1_init);
 303         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_PLL_CFG2_REG,
 304                            (u32)~SUN8I_HDMI_PHY_PLL_CFG2_PREDIV_MSK,
 305                            pll_cfg2_init);
 306         usleep_range(10000, 15000);
 307         regmap_write(phy->regs, SUN8I_HDMI_PHY_PLL_CFG3_REG,
 308                      SUN8I_HDMI_PHY_PLL_CFG3_SOUT_DIV2);
 309         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_PLL_CFG1_REG,
 310                            SUN8I_HDMI_PHY_PLL_CFG1_PLLEN,
 311                            SUN8I_HDMI_PHY_PLL_CFG1_PLLEN);
 312         msleep(100);
 313
 314         /* get B value */
 315         regmap_read(phy->regs, SUN8I_HDMI_PHY_ANA_STS_REG, &val);
 316         val = (val & SUN8I_HDMI_PHY_ANA_STS_B_OUT_MSK) >>
 317                 SUN8I_HDMI_PHY_ANA_STS_B_OUT_SHIFT;
 318         val = min(val + b_offset, (u32)0x3f);
 319
 320         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_PLL_CFG1_REG,
 321                            SUN8I_HDMI_PHY_PLL_CFG1_REG_OD1 |
 322                            SUN8I_HDMI_PHY_PLL_CFG1_REG_OD,
 323                            SUN8I_HDMI_PHY_PLL_CFG1_REG_OD1 |
 324                            SUN8I_HDMI_PHY_PLL_CFG1_REG_OD);
 325         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_PLL_CFG1_REG,
 326                            SUN8I_HDMI_PHY_PLL_CFG1_B_IN_MSK,
 327                            val << SUN8I_HDMI_PHY_PLL_CFG1_B_IN_SHIFT);
 328         msleep(100);
 329         regmap_write(phy->regs, SUN8I_HDMI_PHY_ANA_CFG1_REG, ana_cfg1_end);
 330         regmap_write(phy->regs, SUN8I_HDMI_PHY_ANA_CFG2_REG, ana_cfg2_init);
 331         regmap_write(phy->regs, SUN8I_HDMI_PHY_ANA_CFG3_REG, ana_cfg3_init);
 332
 333         return 0;
 334 }
 335
 336 static int sun8i_hdmi_phy_config(struct dw_hdmi *hdmi, void *data,
 337                                  const struct drm_display_info *display,
 338                                  const struct drm_display_mode *mode)
 339 {
 340         struct sun8i_hdmi_phy *phy = (struct sun8i_hdmi_phy *)data;
 341         u32 val = 0;
 342
 343         if (mode->flags & DRM_MODE_FLAG_NHSYNC)
 344                 val |= SUN8I_HDMI_PHY_DBG_CTRL_POL_NHSYNC;
 345
 346         if (mode->flags & DRM_MODE_FLAG_NVSYNC)
 347                 val |= SUN8I_HDMI_PHY_DBG_CTRL_POL_NVSYNC;
 348
 349         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_DBG_CTRL_REG,
 350                            SUN8I_HDMI_PHY_DBG_CTRL_POL_MASK, val);
 351
 352         if (phy->variant->has_phy_clk)
 353                 clk_set_rate(phy->clk_phy, mode->crtc_clock * 1000);
 354
 355         return phy->variant->phy_config(hdmi, phy, mode->crtc_clock * 1000);
 356 };
 357
 358 static void sun8i_hdmi_phy_disable_a83t(struct dw_hdmi *hdmi,
 359                                         struct sun8i_hdmi_phy *phy)
 360 {
 361         dw_hdmi_phy_gen2_txpwron(hdmi, 0);
 362         dw_hdmi_phy_gen2_pddq(hdmi, 1);
 363
 364         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_REXT_CTRL_REG,
 365                            SUN8I_HDMI_PHY_REXT_CTRL_REXT_EN, 0);
 366 }
 367
 368 static void sun8i_hdmi_phy_disable_h3(struct dw_hdmi *hdmi,
 369                                       struct sun8i_hdmi_phy *phy)
 370 {
 371         regmap_write(phy->regs, SUN8I_HDMI_PHY_ANA_CFG1_REG,
 372                      SUN8I_HDMI_PHY_ANA_CFG1_LDOEN |
 373                      SUN8I_HDMI_PHY_ANA_CFG1_ENVBS |
 374                      SUN8I_HDMI_PHY_ANA_CFG1_ENBI);
 375         regmap_write(phy->regs, SUN8I_HDMI_PHY_PLL_CFG1_REG, 0);
 376 }
 377
 378 static void sun8i_hdmi_phy_disable(struct dw_hdmi *hdmi, void *data)
 379 {
 380         struct sun8i_hdmi_phy *phy = (struct sun8i_hdmi_phy *)data;
 381
 382         phy->variant->phy_disable(hdmi, phy);
 383 }
 384
 385 static const struct dw_hdmi_phy_ops sun8i_hdmi_phy_ops = {
 386         .init = &sun8i_hdmi_phy_config,
 387         .disable = &sun8i_hdmi_phy_disable,
 388         .read_hpd = &dw_hdmi_phy_read_hpd,
 389         .update_hpd = &dw_hdmi_phy_update_hpd,
 390         .setup_hpd = &dw_hdmi_phy_setup_hpd,
 391 };
 392
 393 static void sun8i_hdmi_phy_unlock(struct sun8i_hdmi_phy *phy)
 394 {
 395         /* enable read access to HDMI controller */
 396         regmap_write(phy->regs, SUN8I_HDMI_PHY_READ_EN_REG,
 397                      SUN8I_HDMI_PHY_READ_EN_MAGIC);
 398
 399         /* unscramble register offsets */
 400         regmap_write(phy->regs, SUN8I_HDMI_PHY_UNSCRAMBLE_REG,
 401                      SUN8I_HDMI_PHY_UNSCRAMBLE_MAGIC);
 402 }
 403
 404 static void sun50i_hdmi_phy_init_h6(struct sun8i_hdmi_phy *phy)
 405 {
 406         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_REXT_CTRL_REG,
 407                            SUN8I_HDMI_PHY_REXT_CTRL_REXT_EN,
 408                            SUN8I_HDMI_PHY_REXT_CTRL_REXT_EN);
 409
 410         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_REXT_CTRL_REG,
 411                            0xffff0000, 0x80c00000);
 412 }
 413
 414 static void sun8i_hdmi_phy_init_a83t(struct sun8i_hdmi_phy *phy)
 415 {
 416         sun8i_hdmi_phy_unlock(phy);
 417
 418         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_DBG_CTRL_REG,
 419                            SUN8I_HDMI_PHY_DBG_CTRL_PX_LOCK,
 420                            SUN8I_HDMI_PHY_DBG_CTRL_PX_LOCK);
 421
 422         /*
 423          * Set PHY I2C address. It must match to the address set by
 424          * dw_hdmi_phy_set_slave_addr().
 425          */
 426         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_DBG_CTRL_REG,
 427                            SUN8I_HDMI_PHY_DBG_CTRL_ADDR_MASK,
 428                            SUN8I_HDMI_PHY_DBG_CTRL_ADDR(I2C_ADDR));
 429 }
 430
 431 static void sun8i_hdmi_phy_init_h3(struct sun8i_hdmi_phy *phy)
 432 {
 433         unsigned int val;
 434
 435         sun8i_hdmi_phy_unlock(phy);
 436
 437         regmap_write(phy->regs, SUN8I_HDMI_PHY_ANA_CFG1_REG, 0);
 438         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_ANA_CFG1_REG,
 439                            SUN8I_HDMI_PHY_ANA_CFG1_ENBI,
 440                            SUN8I_HDMI_PHY_ANA_CFG1_ENBI);
 441         udelay(5);
 442         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_ANA_CFG1_REG,
 443                            SUN8I_HDMI_PHY_ANA_CFG1_TMDSCLK_EN,
 444                            SUN8I_HDMI_PHY_ANA_CFG1_TMDSCLK_EN);
 445         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_ANA_CFG1_REG,
 446                            SUN8I_HDMI_PHY_ANA_CFG1_ENVBS,
 447                            SUN8I_HDMI_PHY_ANA_CFG1_ENVBS);
 448         usleep_range(10, 20);
 449         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_ANA_CFG1_REG,
 450                            SUN8I_HDMI_PHY_ANA_CFG1_LDOEN,
 451                            SUN8I_HDMI_PHY_ANA_CFG1_LDOEN);
 452         udelay(5);
 453         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_ANA_CFG1_REG,
 454                            SUN8I_HDMI_PHY_ANA_CFG1_CKEN,
 455                            SUN8I_HDMI_PHY_ANA_CFG1_CKEN);
 456         usleep_range(40, 100);
 457         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_ANA_CFG1_REG,
 458                            SUN8I_HDMI_PHY_ANA_CFG1_ENRCAL,
 459                            SUN8I_HDMI_PHY_ANA_CFG1_ENRCAL);
 460         usleep_range(100, 200);
 461         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_ANA_CFG1_REG,
 462                            SUN8I_HDMI_PHY_ANA_CFG1_ENCALOG,
 463                            SUN8I_HDMI_PHY_ANA_CFG1_ENCALOG);
 464         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_ANA_CFG1_REG,
 465                            SUN8I_HDMI_PHY_ANA_CFG1_ENP2S_TMDS0 |
 466                            SUN8I_HDMI_PHY_ANA_CFG1_ENP2S_TMDS1 |
 467                            SUN8I_HDMI_PHY_ANA_CFG1_ENP2S_TMDS2,
 468                            SUN8I_HDMI_PHY_ANA_CFG1_ENP2S_TMDS0 |
 469                            SUN8I_HDMI_PHY_ANA_CFG1_ENP2S_TMDS1 |
 470                            SUN8I_HDMI_PHY_ANA_CFG1_ENP2S_TMDS2);
 471
 472         /* wait for calibration to finish */
 473         regmap_read_poll_timeout(phy->regs, SUN8I_HDMI_PHY_ANA_STS_REG, val,
 474                                  (val & SUN8I_HDMI_PHY_ANA_STS_RCALEND2D),
 475                                  100, 2000);
 476
 477         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_ANA_CFG1_REG,
 478                            SUN8I_HDMI_PHY_ANA_CFG1_ENP2S_TMDSCLK,
 479                            SUN8I_HDMI_PHY_ANA_CFG1_ENP2S_TMDSCLK);
 480         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_ANA_CFG1_REG,
 481                            SUN8I_HDMI_PHY_ANA_CFG1_BIASEN_TMDS0 |
 482                            SUN8I_HDMI_PHY_ANA_CFG1_BIASEN_TMDS1 |
 483                            SUN8I_HDMI_PHY_ANA_CFG1_BIASEN_TMDS2 |
 484                            SUN8I_HDMI_PHY_ANA_CFG1_BIASEN_TMDSCLK,
 485                            SUN8I_HDMI_PHY_ANA_CFG1_BIASEN_TMDS0 |
 486                            SUN8I_HDMI_PHY_ANA_CFG1_BIASEN_TMDS1 |
 487                            SUN8I_HDMI_PHY_ANA_CFG1_BIASEN_TMDS2 |
 488                            SUN8I_HDMI_PHY_ANA_CFG1_BIASEN_TMDSCLK);
 489
 490         /* enable DDC communication */
 491         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_ANA_CFG3_REG,
 492                            SUN8I_HDMI_PHY_ANA_CFG3_SCLEN |
 493                            SUN8I_HDMI_PHY_ANA_CFG3_SDAEN,
 494                            SUN8I_HDMI_PHY_ANA_CFG3_SCLEN |
 495                            SUN8I_HDMI_PHY_ANA_CFG3_SDAEN);
 496
 497         /* reset PHY PLL clock parent */
 498         regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_PLL_CFG1_REG,
 499                            SUN8I_HDMI_PHY_PLL_CFG1_CKIN_SEL_MSK, 0);
 500
 501         /* set HW control of CEC pins */
 502         regmap_write(phy->regs, SUN8I_HDMI_PHY_CEC_REG, 0);
 503
 504         /* read calibration data */
 505         regmap_read(phy->regs, SUN8I_HDMI_PHY_ANA_STS_REG, &val);
 506         phy->rcal = (val & SUN8I_HDMI_PHY_ANA_STS_RCAL_MASK) >> 2;
 507 }
 508
 509 int sun8i_hdmi_phy_init(struct sun8i_hdmi_phy *phy)
 510 {
 511         int ret;
 512
 513         ret = reset_control_deassert(phy->rst_phy);
 514         if (ret) {
 515                 dev_err(phy->dev, "Cannot deassert phy reset control: %d\n", ret);
 516                 return ret;
 517         }
 518
 519         ret = clk_prepare_enable(phy->clk_bus);
 520         if (ret) {
 521                 dev_err(phy->dev, "Cannot enable bus clock: %d\n", ret);
 522                 goto err_assert_rst_phy;
 523         }
 524
 525         ret = clk_prepare_enable(phy->clk_mod);
 526         if (ret) {
 527                 dev_err(phy->dev, "Cannot enable mod clock: %d\n", ret);
 528                 goto err_disable_clk_bus;
 529         }
 530
 531         if (phy->variant->has_phy_clk) {
 532                 ret = sun8i_phy_clk_create(phy, phy->dev,
 533                                            phy->variant->has_second_pll);
 534                 if (ret) {
 535                         dev_err(phy->dev, "Couldn't create the PHY clock\n");
 536                         goto err_disable_clk_mod;
 537                 }
 538
 539                 clk_prepare_enable(phy->clk_phy);
 540         }
 541
 542         phy->variant->phy_init(phy);
 543
 544         return 0;
 545
 546 err_disable_clk_mod:
 547         clk_disable_unprepare(phy->clk_mod);
 548 err_disable_clk_bus:
 549         clk_disable_unprepare(phy->clk_bus);
 550 err_assert_rst_phy:
 551         reset_control_assert(phy->rst_phy);
 552
 553         return ret;
 554 }
 555
 556 void sun8i_hdmi_phy_deinit(struct sun8i_hdmi_phy *phy)
 557 {
 558         clk_disable_unprepare(phy->clk_mod);
 559         clk_disable_unprepare(phy->clk_bus);
 560         clk_disable_unprepare(phy->clk_phy);
 561
 562         reset_control_assert(phy->rst_phy);
 563 }
 564
 565 void sun8i_hdmi_phy_set_ops(struct sun8i_hdmi_phy *phy,
 566                             struct dw_hdmi_plat_data *plat_data)
 567 {
 568         struct sun8i_hdmi_phy_variant *variant = phy->variant;
 569
 570         if (variant->is_custom_phy) {
 571                 plat_data->phy_ops = &sun8i_hdmi_phy_ops;
 572                 plat_data->phy_name = "sun8i_dw_hdmi_phy";
 573                 plat_data->phy_data = phy;
 574         } else {
 575                 plat_data->mpll_cfg = variant->mpll_cfg;
 576                 plat_data->cur_ctr = variant->cur_ctr;
 577                 plat_data->phy_config = variant->phy_cfg;
 578         }
 579 }
 580
 581 static const struct regmap_config sun8i_hdmi_phy_regmap_config = {
 582         .reg_bits       = 32,
 583         .val_bits       = 32,
 584         .reg_stride     = 4,
 585         .max_register   = SUN8I_HDMI_PHY_CEC_REG,
 586         .name           = "phy"
 587 };
 588
 589 static const struct sun8i_hdmi_phy_variant sun8i_a83t_hdmi_phy = {
 590         .is_custom_phy = true,
 591         .phy_init = &sun8i_hdmi_phy_init_a83t,
 592         .phy_disable = &sun8i_hdmi_phy_disable_a83t,
 593         .phy_config = &sun8i_hdmi_phy_config_a83t,
 594 };
 595
 596 static const struct sun8i_hdmi_phy_variant sun8i_h3_hdmi_phy = {
 597         .has_phy_clk = true,
 598         .is_custom_phy = true,
 599         .phy_init = &sun8i_hdmi_phy_init_h3,
 600         .phy_disable = &sun8i_hdmi_phy_disable_h3,
 601         .phy_config = &sun8i_hdmi_phy_config_h3,
 602 };
 603
 604 static const struct sun8i_hdmi_phy_variant sun8i_r40_hdmi_phy = {
 605         .has_phy_clk = true,
 606         .has_second_pll = true,
 607         .is_custom_phy = true,
 608         .phy_init = &sun8i_hdmi_phy_init_h3,
 609         .phy_disable = &sun8i_hdmi_phy_disable_h3,
 610         .phy_config = &sun8i_hdmi_phy_config_h3,
 611 };
 612
 613 static const struct sun8i_hdmi_phy_variant sun50i_a64_hdmi_phy = {
 614         .has_phy_clk = true,
 615         .is_custom_phy = true,
 616         .phy_init = &sun8i_hdmi_phy_init_h3,
 617         .phy_disable = &sun8i_hdmi_phy_disable_h3,
 618         .phy_config = &sun8i_hdmi_phy_config_h3,
 619 };
 620
 621 static const struct sun8i_hdmi_phy_variant sun50i_h6_hdmi_phy = {
 622         .cur_ctr  = sun50i_h6_cur_ctr,
 623         .mpll_cfg = sun50i_h6_mpll_cfg,
 624         .phy_cfg  = sun50i_h6_phy_config,
 625         .phy_init = &sun50i_hdmi_phy_init_h6,
 626 };
 627
 628 static const struct of_device_id sun8i_hdmi_phy_of_table[] = {
 629         {
 630                 .compatible = "allwinner,sun8i-a83t-hdmi-phy",
 631                 .data = &sun8i_a83t_hdmi_phy,
 632         },
 633         {
 634                 .compatible = "allwinner,sun8i-h3-hdmi-phy",
 635                 .data = &sun8i_h3_hdmi_phy,
 636         },
 637         {
 638                 .compatible = "allwinner,sun8i-r40-hdmi-phy",
 639                 .data = &sun8i_r40_hdmi_phy,
 640         },
 641         {
 642                 .compatible = "allwinner,sun50i-a64-hdmi-phy",
 643                 .data = &sun50i_a64_hdmi_phy,
 644         },
 645         {
 646                 .compatible = "allwinner,sun50i-h6-hdmi-phy",
 647                 .data = &sun50i_h6_hdmi_phy,
 648         },
 649         { /* sentinel */ }
 650 };
 651
 652 int sun8i_hdmi_phy_get(struct sun8i_dw_hdmi *hdmi, struct device_node *node)
 653 {
 654         struct platform_device *pdev = of_find_device_by_node(node);
 655         struct sun8i_hdmi_phy *phy;
 656
 657         if (!pdev)
 658                 return -EPROBE_DEFER;
 659
 660         phy = platform_get_drvdata(pdev);
 661         if (!phy) {
 662                 put_device(&pdev->dev);
 663                 return -EPROBE_DEFER;
 664         }
 665
 666         hdmi->phy = phy;
 667
 668         put_device(&pdev->dev);
 669
 670         return 0;
 671 }
 672
 673 static int sun8i_hdmi_phy_probe(struct platform_device *pdev)
 674 {
 675         const struct of_device_id *match;
 676         struct device *dev = &pdev->dev;
 677         struct device_node *node = dev->of_node;
 678         struct sun8i_hdmi_phy *phy;
 679         struct resource res;
 680         void __iomem *regs;
 681         int ret;
 682
 683         match = of_match_node(sun8i_hdmi_phy_of_table, node);
 684         if (!match) {
 685                 dev_err(dev, "Incompatible HDMI PHY\n");
 686                 return -EINVAL;
 687         }
 688
 689         phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL);
 690         if (!phy)
 691                 return -ENOMEM;
 692
 693         phy->variant = (struct sun8i_hdmi_phy_variant *)match->data;
 694         phy->dev = dev;
 695
 696         ret = of_address_to_resource(node, 0, &res);
 697         if (ret) {
 698                 dev_err(dev, "phy: Couldn't get our resources\n");
 699                 return ret;
 700         }
 701
 702         regs = devm_ioremap_resource(dev, &res);
 703         if (IS_ERR(regs)) {
 704                 dev_err(dev, "Couldn't map the HDMI PHY registers\n");
 705                 return PTR_ERR(regs);
 706         }
 707
 708         phy->regs = devm_regmap_init_mmio(dev, regs,
 709                                           &sun8i_hdmi_phy_regmap_config);
 710         if (IS_ERR(phy->regs)) {
 711                 dev_err(dev, "Couldn't create the HDMI PHY regmap\n");
 712                 return PTR_ERR(phy->regs);
 713         }
 714
 715         phy->clk_bus = of_clk_get_by_name(node, "bus");
 716         if (IS_ERR(phy->clk_bus)) {
 717                 dev_err(dev, "Could not get bus clock\n");
 718                 return PTR_ERR(phy->clk_bus);
 719         }
 720
 721         phy->clk_mod = of_clk_get_by_name(node, "mod");
 722         if (IS_ERR(phy->clk_mod)) {
 723                 dev_err(dev, "Could not get mod clock\n");
 724                 ret = PTR_ERR(phy->clk_mod);
 725                 goto err_put_clk_bus;
 726         }
 727
 728         if (phy->variant->has_phy_clk) {
 729                 phy->clk_pll0 = of_clk_get_by_name(node, "pll-0");
 730                 if (IS_ERR(phy->clk_pll0)) {
 731                         dev_err(dev, "Could not get pll-0 clock\n");
 732                         ret = PTR_ERR(phy->clk_pll0);
 733                         goto err_put_clk_mod;
 734                 }
 735
 736                 if (phy->variant->has_second_pll) {
 737                         phy->clk_pll1 = of_clk_get_by_name(node, "pll-1");
 738                         if (IS_ERR(phy->clk_pll1)) {
 739                                 dev_err(dev, "Could not get pll-1 clock\n");
 740                                 ret = PTR_ERR(phy->clk_pll1);
 741                                 goto err_put_clk_pll0;
 742                         }
 743                 }
 744         }
 745
 746         phy->rst_phy = of_reset_control_get_shared(node, "phy");
 747         if (IS_ERR(phy->rst_phy)) {
 748                 dev_err(dev, "Could not get phy reset control\n");
 749                 ret = PTR_ERR(phy->rst_phy);
 750                 goto err_put_clk_pll1;
 751         }
 752
 753         platform_set_drvdata(pdev, phy);
 754
 755         return 0;
 756
 757 err_put_clk_pll1:
 758         clk_put(phy->clk_pll1);
 759 err_put_clk_pll0:
 760         clk_put(phy->clk_pll0);
 761 err_put_clk_mod:
 762         clk_put(phy->clk_mod);
 763 err_put_clk_bus:
 764         clk_put(phy->clk_bus);
 765
 766         return ret;
 767 }
 768
 769 static int sun8i_hdmi_phy_remove(struct platform_device *pdev)
 770 {
 771         struct sun8i_hdmi_phy *phy = platform_get_drvdata(pdev);
 772
 773         reset_control_put(phy->rst_phy);
 774
 775         clk_put(phy->clk_pll0);
 776         clk_put(phy->clk_pll1);
 777         clk_put(phy->clk_mod);
 778         clk_put(phy->clk_bus);
 779         return 0;
 780 }
 781
 782 struct platform_driver sun8i_hdmi_phy_driver = {
 783         .probe  = sun8i_hdmi_phy_probe,
 784         .remove = sun8i_hdmi_phy_remove,
 785         .driver = {
 786                 .name = "sun8i-hdmi-phy",
 787                 .of_match_table = sun8i_hdmi_phy_of_table,
 788         },
 789 };