1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright (c) 2015 Google, Inc 4 * Copyright 2014 Rockchip Inc. 5 * Copyright 2017 Jernej Skrabec <jernej.skrabec (at) siol.net> 6 */ 7 8 #include <common.h> 9 #include <fdtdec.h> 10 #include <asm/io.h> 11 #include "dw_hdmi.h" 12 13 struct tmds_n_cts { 14 u32 tmds; 15 u32 cts; 16 u32 n; 17 }; 18 19 static const struct tmds_n_cts n_cts_table[] = { 20 { 21 .tmds = 25175000, .n = 6144, .cts = 25175, 22 }, { 23 .tmds = 25200000, .n = 6144, .cts = 25200, 24 }, { 25 .tmds = 27000000, .n = 6144, .cts = 27000, 26 }, { 27 .tmds = 27027000, .n = 6144, .cts = 27027, 28 }, { 29 .tmds = 40000000, .n = 6144, .cts = 40000, 30 }, { 31 .tmds = 54000000, .n = 6144, .cts = 54000, 32 }, { 33 .tmds = 54054000, .n = 6144, .cts = 54054, 34 }, { 35 .tmds = 65000000, .n = 6144, .cts = 65000, 36 }, { 37 .tmds = 74176000, .n = 11648, .cts = 140625, 38 }, { 39 .tmds = 74250000, .n = 6144, .cts = 74250, 40 }, { 41 .tmds = 83500000, .n = 6144, .cts = 83500, 42 }, { 43 .tmds = 106500000, .n = 6144, .cts = 106500, 44 }, { 45 .tmds = 108000000, .n = 6144, .cts = 108000, 46 }, { 47 .tmds = 148352000, .n = 5824, .cts = 140625, 48 }, { 49 .tmds = 148500000, .n = 6144, .cts = 148500, 50 }, { 51 .tmds = 297000000, .n = 5120, .cts = 247500, 52 } 53 }; 54 55 static void hdmi_write(struct dw_hdmi *hdmi, u8 val, int offset) 56 { 57 switch (hdmi->reg_io_width) { 58 case 1: 59 writeb(val, hdmi->ioaddr + offset); 60 break; 61 case 4: 62 writel(val, hdmi->ioaddr + (offset << 2)); 63 break; 64 default: 65 debug("reg_io_width has unsupported width!\n"); 66 break; 67 } 68 } 69 70 static u8 hdmi_read(struct dw_hdmi *hdmi, int offset) 71 { 72 switch (hdmi->reg_io_width) { 73 case 1: 74 return readb(hdmi->ioaddr + offset); 75 case 4: 76 return readl(hdmi->ioaddr + (offset << 2)); 77 default: 78 debug("reg_io_width has unsupported width!\n"); 79 break; 80 } 81 82 return 0; 83 } 84 85 static void hdmi_mod(struct dw_hdmi *hdmi, unsigned reg, u8 mask, u8 data) 86 { 87 u8 val = hdmi_read(hdmi, reg) & ~mask; 88 89 val |= data & mask; 90 hdmi_write(hdmi, val, reg); 91 } 92 93 static void hdmi_set_clock_regenerator(struct dw_hdmi *hdmi, u32 n, u32 cts) 94 { 95 uint cts3; 96 uint n3; 97 98 /* first set ncts_atomic_write (if present) */ 99 n3 = HDMI_AUD_N3_NCTS_ATOMIC_WRITE; 100 hdmi_write(hdmi, n3, HDMI_AUD_N3); 101 102 /* set cts_manual (if present) */ 103 cts3 = HDMI_AUD_CTS3_CTS_MANUAL; 104 105 cts3 |= HDMI_AUD_CTS3_N_SHIFT_1 << HDMI_AUD_CTS3_N_SHIFT_OFFSET; 106 cts3 |= (cts >> 16) & HDMI_AUD_CTS3_AUDCTS19_16_MASK; 107 108 /* write cts values; cts3 must be written first */ 109 hdmi_write(hdmi, cts3, HDMI_AUD_CTS3); 110 hdmi_write(hdmi, (cts >> 8) & 0xff, HDMI_AUD_CTS2); 111 hdmi_write(hdmi, cts & 0xff, HDMI_AUD_CTS1); 112 113 /* write n values; n1 must be written last */ 114 n3 |= (n >> 16) & HDMI_AUD_N3_AUDN19_16_MASK; 115 hdmi_write(hdmi, n3, HDMI_AUD_N3); 116 hdmi_write(hdmi, (n >> 8) & 0xff, HDMI_AUD_N2); 117 hdmi_write(hdmi, n & 0xff, HDMI_AUD_N3); 118 119 hdmi_write(hdmi, HDMI_AUD_INPUTCLKFS_128, HDMI_AUD_INPUTCLKFS); 120 } 121 122 static int hdmi_lookup_n_cts(u32 pixel_clk) 123 { 124 int i; 125 126 for (i = 0; i < ARRAY_SIZE(n_cts_table); i++) 127 if (pixel_clk <= n_cts_table[i].tmds) 128 break; 129 130 if (i >= ARRAY_SIZE(n_cts_table)) 131 return -1; 132 133 return i; 134 } 135 136 static void hdmi_audio_set_samplerate(struct dw_hdmi *hdmi, u32 pixel_clk) 137 { 138 u32 clk_n, clk_cts; 139 int index; 140 141 index = hdmi_lookup_n_cts(pixel_clk); 142 if (index == -1) { 143 debug("audio not supported for pixel clk %d\n", pixel_clk); 144 return; 145 } 146 147 clk_n = n_cts_table[index].n; 148 clk_cts = n_cts_table[index].cts; 149 hdmi_set_clock_regenerator(hdmi, clk_n, clk_cts); 150 } 151 152 /* 153 * this submodule is responsible for the video data synchronization. 154 * for example, for rgb 4:4:4 input, the data map is defined as 155 * pin{47~40} <==> r[7:0] 156 * pin{31~24} <==> g[7:0] 157 * pin{15~8} <==> b[7:0] 158 */ 159 static void hdmi_video_sample(struct dw_hdmi *hdmi) 160 { 161 u32 color_format = 0x01; 162 uint val; 163 164 val = HDMI_TX_INVID0_INTERNAL_DE_GENERATOR_DISABLE | 165 ((color_format << HDMI_TX_INVID0_VIDEO_MAPPING_OFFSET) & 166 HDMI_TX_INVID0_VIDEO_MAPPING_MASK); 167 168 hdmi_write(hdmi, val, HDMI_TX_INVID0); 169 170 /* enable tx stuffing: when de is inactive, fix the output data to 0 */ 171 val = HDMI_TX_INSTUFFING_BDBDATA_STUFFING_ENABLE | 172 HDMI_TX_INSTUFFING_RCRDATA_STUFFING_ENABLE | 173 HDMI_TX_INSTUFFING_GYDATA_STUFFING_ENABLE; 174 hdmi_write(hdmi, val, HDMI_TX_INSTUFFING); 175 hdmi_write(hdmi, 0x0, HDMI_TX_GYDATA0); 176 hdmi_write(hdmi, 0x0, HDMI_TX_GYDATA1); 177 hdmi_write(hdmi, 0x0, HDMI_TX_RCRDATA0); 178 hdmi_write(hdmi, 0x0, HDMI_TX_RCRDATA1); 179 hdmi_write(hdmi, 0x0, HDMI_TX_BCBDATA0); 180 hdmi_write(hdmi, 0x0, HDMI_TX_BCBDATA1); 181 } 182 183 static void hdmi_video_packetize(struct dw_hdmi *hdmi) 184 { 185 u32 output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_BYPASS; 186 u32 remap_size = HDMI_VP_REMAP_YCC422_16BIT; 187 u32 color_depth = 0; 188 uint val, vp_conf; 189 190 /* set the packetizer registers */ 191 val = ((color_depth << HDMI_VP_PR_CD_COLOR_DEPTH_OFFSET) & 192 HDMI_VP_PR_CD_COLOR_DEPTH_MASK) | 193 ((0 << HDMI_VP_PR_CD_DESIRED_PR_FACTOR_OFFSET) & 194 HDMI_VP_PR_CD_DESIRED_PR_FACTOR_MASK); 195 hdmi_write(hdmi, val, HDMI_VP_PR_CD); 196 197 hdmi_mod(hdmi, HDMI_VP_STUFF, HDMI_VP_STUFF_PR_STUFFING_MASK, 198 HDMI_VP_STUFF_PR_STUFFING_STUFFING_MODE); 199 200 /* data from pixel repeater block */ 201 vp_conf = HDMI_VP_CONF_PR_EN_DISABLE | 202 HDMI_VP_CONF_BYPASS_SELECT_VID_PACKETIZER; 203 204 hdmi_mod(hdmi, HDMI_VP_CONF, HDMI_VP_CONF_PR_EN_MASK | 205 HDMI_VP_CONF_BYPASS_SELECT_MASK, vp_conf); 206 207 hdmi_mod(hdmi, HDMI_VP_STUFF, HDMI_VP_STUFF_IDEFAULT_PHASE_MASK, 208 1 << HDMI_VP_STUFF_IDEFAULT_PHASE_OFFSET); 209 210 hdmi_write(hdmi, remap_size, HDMI_VP_REMAP); 211 212 vp_conf = HDMI_VP_CONF_BYPASS_EN_ENABLE | 213 HDMI_VP_CONF_PP_EN_DISABLE | 214 HDMI_VP_CONF_YCC422_EN_DISABLE; 215 216 hdmi_mod(hdmi, HDMI_VP_CONF, HDMI_VP_CONF_BYPASS_EN_MASK | 217 HDMI_VP_CONF_PP_EN_ENMASK | HDMI_VP_CONF_YCC422_EN_MASK, 218 vp_conf); 219 220 hdmi_mod(hdmi, HDMI_VP_STUFF, HDMI_VP_STUFF_PP_STUFFING_MASK | 221 HDMI_VP_STUFF_YCC422_STUFFING_MASK, 222 HDMI_VP_STUFF_PP_STUFFING_STUFFING_MODE | 223 HDMI_VP_STUFF_YCC422_STUFFING_STUFFING_MODE); 224 225 hdmi_mod(hdmi, HDMI_VP_CONF, HDMI_VP_CONF_OUTPUT_SELECTOR_MASK, 226 output_select); 227 } 228 229 static inline void hdmi_phy_test_clear(struct dw_hdmi *hdmi, uint bit) 230 { 231 hdmi_mod(hdmi, HDMI_PHY_TST0, HDMI_PHY_TST0_TSTCLR_MASK, 232 bit << HDMI_PHY_TST0_TSTCLR_OFFSET); 233 } 234 235 static int hdmi_phy_wait_i2c_done(struct dw_hdmi *hdmi, u32 msec) 236 { 237 ulong start; 238 u32 val; 239 240 start = get_timer(0); 241 do { 242 val = hdmi_read(hdmi, HDMI_IH_I2CMPHY_STAT0); 243 if (val & 0x3) { 244 hdmi_write(hdmi, val, HDMI_IH_I2CMPHY_STAT0); 245 return 0; 246 } 247 248 udelay(100); 249 } while (get_timer(start) < msec); 250 251 return 1; 252 } 253 254 static void hdmi_phy_i2c_write(struct dw_hdmi *hdmi, uint data, uint addr) 255 { 256 hdmi_write(hdmi, 0xff, HDMI_IH_I2CMPHY_STAT0); 257 hdmi_write(hdmi, addr, HDMI_PHY_I2CM_ADDRESS_ADDR); 258 hdmi_write(hdmi, (u8)(data >> 8), HDMI_PHY_I2CM_DATAO_1_ADDR); 259 hdmi_write(hdmi, (u8)(data >> 0), HDMI_PHY_I2CM_DATAO_0_ADDR); 260 hdmi_write(hdmi, HDMI_PHY_I2CM_OPERATION_ADDR_WRITE, 261 HDMI_PHY_I2CM_OPERATION_ADDR); 262 263 hdmi_phy_wait_i2c_done(hdmi, 1000); 264 } 265 266 static void hdmi_phy_enable_power(struct dw_hdmi *hdmi, uint enable) 267 { 268 hdmi_mod(hdmi, HDMI_PHY_CONF0, HDMI_PHY_CONF0_PDZ_MASK, 269 enable << HDMI_PHY_CONF0_PDZ_OFFSET); 270 } 271 272 static void hdmi_phy_enable_tmds(struct dw_hdmi *hdmi, uint enable) 273 { 274 hdmi_mod(hdmi, HDMI_PHY_CONF0, HDMI_PHY_CONF0_ENTMDS_MASK, 275 enable << HDMI_PHY_CONF0_ENTMDS_OFFSET); 276 } 277 278 static void hdmi_phy_enable_spare(struct dw_hdmi *hdmi, uint enable) 279 { 280 hdmi_mod(hdmi, HDMI_PHY_CONF0, HDMI_PHY_CONF0_SPARECTRL_MASK, 281 enable << HDMI_PHY_CONF0_SPARECTRL_OFFSET); 282 } 283 284 static void hdmi_phy_gen2_pddq(struct dw_hdmi *hdmi, uint enable) 285 { 286 hdmi_mod(hdmi, HDMI_PHY_CONF0, HDMI_PHY_CONF0_GEN2_PDDQ_MASK, 287 enable << HDMI_PHY_CONF0_GEN2_PDDQ_OFFSET); 288 } 289 290 static void hdmi_phy_gen2_txpwron(struct dw_hdmi *hdmi, uint enable) 291 { 292 hdmi_mod(hdmi, HDMI_PHY_CONF0, 293 HDMI_PHY_CONF0_GEN2_TXPWRON_MASK, 294 enable << HDMI_PHY_CONF0_GEN2_TXPWRON_OFFSET); 295 } 296 297 static void hdmi_phy_sel_data_en_pol(struct dw_hdmi *hdmi, uint enable) 298 { 299 hdmi_mod(hdmi, HDMI_PHY_CONF0, 300 HDMI_PHY_CONF0_SELDATAENPOL_MASK, 301 enable << HDMI_PHY_CONF0_SELDATAENPOL_OFFSET); 302 } 303 304 static void hdmi_phy_sel_interface_control(struct dw_hdmi *hdmi, 305 uint enable) 306 { 307 hdmi_mod(hdmi, HDMI_PHY_CONF0, HDMI_PHY_CONF0_SELDIPIF_MASK, 308 enable << HDMI_PHY_CONF0_SELDIPIF_OFFSET); 309 } 310 311 static int hdmi_phy_configure(struct dw_hdmi *hdmi, u32 mpixelclock) 312 { 313 ulong start; 314 uint i, val; 315 316 if (!hdmi->mpll_cfg || !hdmi->phy_cfg) 317 return -1; 318 319 /* gen2 tx power off */ 320 hdmi_phy_gen2_txpwron(hdmi, 0); 321 322 /* gen2 pddq */ 323 hdmi_phy_gen2_pddq(hdmi, 1); 324 325 /* phy reset */ 326 hdmi_write(hdmi, HDMI_MC_PHYRSTZ_DEASSERT, HDMI_MC_PHYRSTZ); 327 hdmi_write(hdmi, HDMI_MC_PHYRSTZ_ASSERT, HDMI_MC_PHYRSTZ); 328 hdmi_write(hdmi, HDMI_MC_HEACPHY_RST_ASSERT, HDMI_MC_HEACPHY_RST); 329 330 hdmi_phy_test_clear(hdmi, 1); 331 hdmi_write(hdmi, HDMI_PHY_I2CM_SLAVE_ADDR_PHY_GEN2, 332 HDMI_PHY_I2CM_SLAVE_ADDR); 333 hdmi_phy_test_clear(hdmi, 0); 334 335 /* pll/mpll cfg - always match on final entry */ 336 for (i = 0; hdmi->mpll_cfg[i].mpixelclock != (~0ul); i++) 337 if (mpixelclock <= hdmi->mpll_cfg[i].mpixelclock) 338 break; 339 340 hdmi_phy_i2c_write(hdmi, hdmi->mpll_cfg[i].cpce, PHY_OPMODE_PLLCFG); 341 hdmi_phy_i2c_write(hdmi, hdmi->mpll_cfg[i].gmp, PHY_PLLGMPCTRL); 342 hdmi_phy_i2c_write(hdmi, hdmi->mpll_cfg[i].curr, PHY_PLLCURRCTRL); 343 344 hdmi_phy_i2c_write(hdmi, 0x0000, PHY_PLLPHBYCTRL); 345 hdmi_phy_i2c_write(hdmi, 0x0006, PHY_PLLCLKBISTPHASE); 346 347 for (i = 0; hdmi->phy_cfg[i].mpixelclock != (~0ul); i++) 348 if (mpixelclock <= hdmi->phy_cfg[i].mpixelclock) 349 break; 350 351 /* 352 * resistance term 133ohm cfg 353 * preemp cgf 0.00 354 * tx/ck lvl 10 355 */ 356 hdmi_phy_i2c_write(hdmi, hdmi->phy_cfg[i].term, PHY_TXTERM); 357 hdmi_phy_i2c_write(hdmi, hdmi->phy_cfg[i].sym_ctr, PHY_CKSYMTXCTRL); 358 hdmi_phy_i2c_write(hdmi, hdmi->phy_cfg[i].vlev_ctr, PHY_VLEVCTRL); 359 360 /* remove clk term */ 361 hdmi_phy_i2c_write(hdmi, 0x8000, PHY_CKCALCTRL); 362 363 hdmi_phy_enable_power(hdmi, 1); 364 365 /* toggle tmds enable */ 366 hdmi_phy_enable_tmds(hdmi, 0); 367 hdmi_phy_enable_tmds(hdmi, 1); 368 369 /* gen2 tx power on */ 370 hdmi_phy_gen2_txpwron(hdmi, 1); 371 hdmi_phy_gen2_pddq(hdmi, 0); 372 373 hdmi_phy_enable_spare(hdmi, 1); 374 375 /* wait for phy pll lock */ 376 start = get_timer(0); 377 do { 378 val = hdmi_read(hdmi, HDMI_PHY_STAT0); 379 if (!(val & HDMI_PHY_TX_PHY_LOCK)) 380 return 0; 381 382 udelay(100); 383 } while (get_timer(start) < 5); 384 385 return -1; 386 } 387 388 static void hdmi_av_composer(struct dw_hdmi *hdmi, 389 const struct display_timing *edid) 390 { 391 bool mdataenablepolarity = true; 392 uint inv_val; 393 uint hbl; 394 uint vbl; 395 396 hbl = edid->hback_porch.typ + edid->hfront_porch.typ + 397 edid->hsync_len.typ; 398 vbl = edid->vback_porch.typ + edid->vfront_porch.typ + 399 edid->vsync_len.typ; 400 401 /* set up hdmi_fc_invidconf */ 402 inv_val = HDMI_FC_INVIDCONF_HDCP_KEEPOUT_INACTIVE; 403 404 inv_val |= (edid->flags & DISPLAY_FLAGS_VSYNC_HIGH ? 405 HDMI_FC_INVIDCONF_VSYNC_IN_POLARITY_ACTIVE_HIGH : 406 HDMI_FC_INVIDCONF_VSYNC_IN_POLARITY_ACTIVE_LOW); 407 408 inv_val |= (edid->flags & DISPLAY_FLAGS_HSYNC_HIGH ? 409 HDMI_FC_INVIDCONF_HSYNC_IN_POLARITY_ACTIVE_HIGH : 410 HDMI_FC_INVIDCONF_HSYNC_IN_POLARITY_ACTIVE_LOW); 411 412 inv_val |= (mdataenablepolarity ? 413 HDMI_FC_INVIDCONF_DE_IN_POLARITY_ACTIVE_HIGH : 414 HDMI_FC_INVIDCONF_DE_IN_POLARITY_ACTIVE_LOW); 415 416 inv_val |= (edid->hdmi_monitor ? 417 HDMI_FC_INVIDCONF_DVI_MODEZ_HDMI_MODE : 418 HDMI_FC_INVIDCONF_DVI_MODEZ_DVI_MODE); 419 420 inv_val |= HDMI_FC_INVIDCONF_R_V_BLANK_IN_OSC_ACTIVE_LOW; 421 422 inv_val |= HDMI_FC_INVIDCONF_IN_I_P_PROGRESSIVE; 423 424 hdmi_write(hdmi, inv_val, HDMI_FC_INVIDCONF); 425 426 /* set up horizontal active pixel width */ 427 hdmi_write(hdmi, edid->hactive.typ >> 8, HDMI_FC_INHACTV1); 428 hdmi_write(hdmi, edid->hactive.typ, HDMI_FC_INHACTV0); 429 430 /* set up vertical active lines */ 431 hdmi_write(hdmi, edid->vactive.typ >> 8, HDMI_FC_INVACTV1); 432 hdmi_write(hdmi, edid->vactive.typ, HDMI_FC_INVACTV0); 433 434 /* set up horizontal blanking pixel region width */ 435 hdmi_write(hdmi, hbl >> 8, HDMI_FC_INHBLANK1); 436 hdmi_write(hdmi, hbl, HDMI_FC_INHBLANK0); 437 438 /* set up vertical blanking pixel region width */ 439 hdmi_write(hdmi, vbl, HDMI_FC_INVBLANK); 440 441 /* set up hsync active edge delay width (in pixel clks) */ 442 hdmi_write(hdmi, edid->hfront_porch.typ >> 8, HDMI_FC_HSYNCINDELAY1); 443 hdmi_write(hdmi, edid->hfront_porch.typ, HDMI_FC_HSYNCINDELAY0); 444 445 /* set up vsync active edge delay (in lines) */ 446 hdmi_write(hdmi, edid->vfront_porch.typ, HDMI_FC_VSYNCINDELAY); 447 448 /* set up hsync active pulse width (in pixel clks) */ 449 hdmi_write(hdmi, edid->hsync_len.typ >> 8, HDMI_FC_HSYNCINWIDTH1); 450 hdmi_write(hdmi, edid->hsync_len.typ, HDMI_FC_HSYNCINWIDTH0); 451 452 /* set up vsync active edge delay (in lines) */ 453 hdmi_write(hdmi, edid->vsync_len.typ, HDMI_FC_VSYNCINWIDTH); 454 } 455 456 /* hdmi initialization step b.4 */ 457 static void hdmi_enable_video_path(struct dw_hdmi *hdmi, bool audio) 458 { 459 uint clkdis; 460 461 /* control period minimum duration */ 462 hdmi_write(hdmi, 12, HDMI_FC_CTRLDUR); 463 hdmi_write(hdmi, 32, HDMI_FC_EXCTRLDUR); 464 hdmi_write(hdmi, 1, HDMI_FC_EXCTRLSPAC); 465 466 /* set to fill tmds data channels */ 467 hdmi_write(hdmi, 0x0b, HDMI_FC_CH0PREAM); 468 hdmi_write(hdmi, 0x16, HDMI_FC_CH1PREAM); 469 hdmi_write(hdmi, 0x21, HDMI_FC_CH2PREAM); 470 471 hdmi_write(hdmi, HDMI_MC_FLOWCTRL_FEED_THROUGH_OFF_CSC_BYPASS, 472 HDMI_MC_FLOWCTRL); 473 474 /* enable pixel clock and tmds data path */ 475 clkdis = 0x7f; 476 clkdis &= ~HDMI_MC_CLKDIS_PIXELCLK_DISABLE; 477 hdmi_write(hdmi, clkdis, HDMI_MC_CLKDIS); 478 479 clkdis &= ~HDMI_MC_CLKDIS_TMDSCLK_DISABLE; 480 hdmi_write(hdmi, clkdis, HDMI_MC_CLKDIS); 481 482 if (audio) { 483 clkdis &= ~HDMI_MC_CLKDIS_AUDCLK_DISABLE; 484 hdmi_write(hdmi, clkdis, HDMI_MC_CLKDIS); 485 } 486 } 487 488 /* workaround to clear the overflow condition */ 489 static void hdmi_clear_overflow(struct dw_hdmi *hdmi) 490 { 491 uint val, count; 492 493 /* tmds software reset */ 494 hdmi_write(hdmi, (u8)~HDMI_MC_SWRSTZ_TMDSSWRST_REQ, HDMI_MC_SWRSTZ); 495 496 val = hdmi_read(hdmi, HDMI_FC_INVIDCONF); 497 498 for (count = 0; count < 4; count++) 499 hdmi_write(hdmi, val, HDMI_FC_INVIDCONF); 500 } 501 502 static void hdmi_audio_set_format(struct dw_hdmi *hdmi) 503 { 504 hdmi_write(hdmi, HDMI_AUD_CONF0_I2S_SELECT | HDMI_AUD_CONF0_I2S_IN_EN_0, 505 HDMI_AUD_CONF0); 506 507 508 hdmi_write(hdmi, HDMI_AUD_CONF1_I2S_MODE_STANDARD_MODE | 509 HDMI_AUD_CONF1_I2S_WIDTH_16BIT, HDMI_AUD_CONF1); 510 511 hdmi_write(hdmi, 0x00, HDMI_AUD_CONF2); 512 } 513 514 static void hdmi_audio_fifo_reset(struct dw_hdmi *hdmi) 515 { 516 hdmi_write(hdmi, (u8)~HDMI_MC_SWRSTZ_II2SSWRST_REQ, HDMI_MC_SWRSTZ); 517 hdmi_write(hdmi, HDMI_AUD_CONF0_SW_AUDIO_FIFO_RST, HDMI_AUD_CONF0); 518 519 hdmi_write(hdmi, 0x00, HDMI_AUD_INT); 520 hdmi_write(hdmi, 0x00, HDMI_AUD_INT1); 521 } 522 523 static int hdmi_get_plug_in_status(struct dw_hdmi *hdmi) 524 { 525 uint val = hdmi_read(hdmi, HDMI_PHY_STAT0) & HDMI_PHY_HPD; 526 527 return !!val; 528 } 529 530 static int hdmi_ddc_wait_i2c_done(struct dw_hdmi *hdmi, int msec) 531 { 532 u32 val; 533 ulong start; 534 535 start = get_timer(0); 536 do { 537 val = hdmi_read(hdmi, HDMI_IH_I2CM_STAT0); 538 if (val & 0x2) { 539 hdmi_write(hdmi, val, HDMI_IH_I2CM_STAT0); 540 return 0; 541 } 542 543 udelay(100); 544 } while (get_timer(start) < msec); 545 546 return 1; 547 } 548 549 static void hdmi_ddc_reset(struct dw_hdmi *hdmi) 550 { 551 hdmi_mod(hdmi, HDMI_I2CM_SOFTRSTZ, HDMI_I2CM_SOFTRSTZ_MASK, 0); 552 } 553 554 static int hdmi_read_edid(struct dw_hdmi *hdmi, int block, u8 *buff) 555 { 556 int shift = (block % 2) * 0x80; 557 int edid_read_err = 0; 558 u32 trytime = 5; 559 u32 n; 560 561 /* set ddc i2c clk which devided from ddc_clk to 100khz */ 562 hdmi_write(hdmi, hdmi->i2c_clk_high, HDMI_I2CM_SS_SCL_HCNT_0_ADDR); 563 hdmi_write(hdmi, hdmi->i2c_clk_low, HDMI_I2CM_SS_SCL_LCNT_0_ADDR); 564 hdmi_mod(hdmi, HDMI_I2CM_DIV, HDMI_I2CM_DIV_FAST_STD_MODE, 565 HDMI_I2CM_DIV_STD_MODE); 566 567 hdmi_write(hdmi, HDMI_I2CM_SLAVE_DDC_ADDR, HDMI_I2CM_SLAVE); 568 hdmi_write(hdmi, HDMI_I2CM_SEGADDR_DDC, HDMI_I2CM_SEGADDR); 569 hdmi_write(hdmi, block >> 1, HDMI_I2CM_SEGPTR); 570 571 while (trytime--) { 572 edid_read_err = 0; 573 574 for (n = 0; n < HDMI_EDID_BLOCK_SIZE; n++) { 575 hdmi_write(hdmi, shift + n, HDMI_I2CM_ADDRESS); 576 577 if (block == 0) 578 hdmi_write(hdmi, HDMI_I2CM_OP_RD8, 579 HDMI_I2CM_OPERATION); 580 else 581 hdmi_write(hdmi, HDMI_I2CM_OP_RD8_EXT, 582 HDMI_I2CM_OPERATION); 583 584 if (hdmi_ddc_wait_i2c_done(hdmi, 10)) { 585 hdmi_ddc_reset(hdmi); 586 edid_read_err = 1; 587 break; 588 } 589 590 buff[n] = hdmi_read(hdmi, HDMI_I2CM_DATAI); 591 } 592 593 if (!edid_read_err) 594 break; 595 } 596 597 return edid_read_err; 598 } 599 600 static const u8 pre_buf[] = { 601 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 602 0x04, 0x69, 0xfa, 0x23, 0xc8, 0x28, 0x01, 0x00, 603 0x10, 0x17, 0x01, 0x03, 0x80, 0x33, 0x1d, 0x78, 604 0x2a, 0xd9, 0x45, 0xa2, 0x55, 0x4d, 0xa0, 0x27, 605 0x12, 0x50, 0x54, 0xb7, 0xef, 0x00, 0x71, 0x4f, 606 0x81, 0x40, 0x81, 0x80, 0x95, 0x00, 0xb3, 0x00, 607 0xd1, 0xc0, 0x81, 0xc0, 0x81, 0x00, 0x02, 0x3a, 608 0x80, 0x18, 0x71, 0x38, 0x2d, 0x40, 0x58, 0x2c, 609 0x45, 0x00, 0xfd, 0x1e, 0x11, 0x00, 0x00, 0x1e, 610 0x00, 0x00, 0x00, 0xff, 0x00, 0x44, 0x34, 0x4c, 611 0x4d, 0x54, 0x46, 0x30, 0x37, 0x35, 0x39, 0x37, 612 0x36, 0x0a, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x32, 613 0x4b, 0x18, 0x53, 0x11, 0x00, 0x0a, 0x20, 0x20, 614 0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xfc, 615 0x00, 0x41, 0x53, 0x55, 0x53, 0x20, 0x56, 0x53, 616 0x32, 0x33, 0x38, 0x0a, 0x20, 0x20, 0x01, 0xb0, 617 0x02, 0x03, 0x22, 0x71, 0x4f, 0x01, 0x02, 0x03, 618 0x11, 0x12, 0x13, 0x04, 0x14, 0x05, 0x0e, 0x0f, 619 0x1d, 0x1e, 0x1f, 0x10, 0x23, 0x09, 0x17, 0x07, 620 0x83, 0x01, 0x00, 0x00, 0x65, 0x03, 0x0c, 0x00, 621 0x10, 0x00, 0x8c, 0x0a, 0xd0, 0x8a, 0x20, 0xe0, 622 0x2d, 0x10, 0x10, 0x3e, 0x96, 0x00, 0xfd, 0x1e, 623 0x11, 0x00, 0x00, 0x18, 0x01, 0x1d, 0x00, 0x72, 624 0x51, 0xd0, 0x1e, 0x20, 0x6e, 0x28, 0x55, 0x00, 625 0xfd, 0x1e, 0x11, 0x00, 0x00, 0x1e, 0x01, 0x1d, 626 0x00, 0xbc, 0x52, 0xd0, 0x1e, 0x20, 0xb8, 0x28, 627 0x55, 0x40, 0xfd, 0x1e, 0x11, 0x00, 0x00, 0x1e, 628 0x8c, 0x0a, 0xd0, 0x90, 0x20, 0x40, 0x31, 0x20, 629 0x0c, 0x40, 0x55, 0x00, 0xfd, 0x1e, 0x11, 0x00, 630 0x00, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 631 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 632 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xe9, 633 }; 634 635 int dw_hdmi_phy_cfg(struct dw_hdmi *hdmi, uint mpixelclock) 636 { 637 int i, ret; 638 639 /* hdmi phy spec says to do the phy initialization sequence twice */ 640 for (i = 0; i < 2; i++) { 641 hdmi_phy_sel_data_en_pol(hdmi, 1); 642 hdmi_phy_sel_interface_control(hdmi, 0); 643 hdmi_phy_enable_tmds(hdmi, 0); 644 hdmi_phy_enable_power(hdmi, 0); 645 646 ret = hdmi_phy_configure(hdmi, mpixelclock); 647 if (ret) { 648 debug("hdmi phy config failure %d\n", ret); 649 return ret; 650 } 651 } 652 653 return 0; 654 } 655 656 int dw_hdmi_phy_wait_for_hpd(struct dw_hdmi *hdmi) 657 { 658 ulong start; 659 660 start = get_timer(0); 661 do { 662 if (hdmi_get_plug_in_status(hdmi)) 663 return 0; 664 udelay(100); 665 } while (get_timer(start) < 300); 666 667 return -1; 668 } 669 670 void dw_hdmi_phy_init(struct dw_hdmi *hdmi) 671 { 672 /* enable phy i2cm done irq */ 673 hdmi_write(hdmi, HDMI_PHY_I2CM_INT_ADDR_DONE_POL, 674 HDMI_PHY_I2CM_INT_ADDR); 675 676 /* enable phy i2cm nack & arbitration error irq */ 677 hdmi_write(hdmi, HDMI_PHY_I2CM_CTLINT_ADDR_NAC_POL | 678 HDMI_PHY_I2CM_CTLINT_ADDR_ARBITRATION_POL, 679 HDMI_PHY_I2CM_CTLINT_ADDR); 680 681 /* enable cable hot plug irq */ 682 hdmi_write(hdmi, (u8)~HDMI_PHY_HPD, HDMI_PHY_MASK0); 683 684 /* clear hotplug interrupts */ 685 hdmi_write(hdmi, HDMI_IH_PHY_STAT0_HPD, HDMI_IH_PHY_STAT0); 686 } 687 688 int dw_hdmi_read_edid(struct dw_hdmi *hdmi, u8 *buf, int buf_size) 689 { 690 u32 edid_size = HDMI_EDID_BLOCK_SIZE; 691 int ret; 692 693 if (0) { 694 edid_size = sizeof(pre_buf); 695 memcpy(buf, pre_buf, edid_size); 696 } else { 697 ret = hdmi_read_edid(hdmi, 0, buf); 698 if (ret) { 699 debug("failed to read edid.\n"); 700 return -1; 701 } 702 703 if (buf[0x7e] != 0) { 704 hdmi_read_edid(hdmi, 1, buf + HDMI_EDID_BLOCK_SIZE); 705 edid_size += HDMI_EDID_BLOCK_SIZE; 706 } 707 } 708 709 return edid_size; 710 } 711 712 int dw_hdmi_enable(struct dw_hdmi *hdmi, const struct display_timing *edid) 713 { 714 int ret; 715 716 debug("%s, mode info : clock %d hdis %d vdis %d\n", 717 edid->hdmi_monitor ? "hdmi" : "dvi", 718 edid->pixelclock.typ, edid->hactive.typ, edid->vactive.typ); 719 720 hdmi_av_composer(hdmi, edid); 721 722 ret = hdmi->phy_set(hdmi, edid->pixelclock.typ); 723 if (ret) 724 return ret; 725 726 hdmi_enable_video_path(hdmi, edid->hdmi_monitor); 727 728 if (edid->hdmi_monitor) { 729 hdmi_audio_fifo_reset(hdmi); 730 hdmi_audio_set_format(hdmi); 731 hdmi_audio_set_samplerate(hdmi, edid->pixelclock.typ); 732 } 733 734 hdmi_video_packetize(hdmi); 735 hdmi_video_sample(hdmi); 736 737 hdmi_clear_overflow(hdmi); 738 739 return 0; 740 } 741 742 void dw_hdmi_init(struct dw_hdmi *hdmi) 743 { 744 uint ih_mute; 745 746 /* 747 * boot up defaults are: 748 * hdmi_ih_mute = 0x03 (disabled) 749 * hdmi_ih_mute_* = 0x00 (enabled) 750 * 751 * disable top level interrupt bits in hdmi block 752 */ 753 ih_mute = /*hdmi_read(hdmi, HDMI_IH_MUTE) |*/ 754 HDMI_IH_MUTE_MUTE_WAKEUP_INTERRUPT | 755 HDMI_IH_MUTE_MUTE_ALL_INTERRUPT; 756 757 hdmi_write(hdmi, ih_mute, HDMI_IH_MUTE); 758 759 /* enable i2c master done irq */ 760 hdmi_write(hdmi, ~0x04, HDMI_I2CM_INT); 761 762 /* enable i2c client nack % arbitration error irq */ 763 hdmi_write(hdmi, ~0x44, HDMI_I2CM_CTLINT); 764 } 765
