1 /* 2 * 3 * Copyright (c) 2012 Gilles Dartiguelongue, Thomas Richter 4 * 5 * All Rights Reserved. 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a 8 * copy of this software and associated documentation files (the 9 * "Software"), to deal in the Software without restriction, including 10 * without limitation the rights to use, copy, modify, merge, publish, 11 * distribute, sub license, and/or sell copies of the Software, and to 12 * permit persons to whom the Software is furnished to do so, subject to 13 * the following conditions: 14 * 15 * The above copyright notice and this permission notice (including the 16 * next paragraph) shall be included in all copies or substantial portions 17 * of the Software. 18 * 19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 23 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 24 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 25 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 26 * 27 */ 28 29 #include "dvo.h" 30 #include "i915_reg.h" 31 #include "i915_drv.h" 32 33 #define NS2501_VID 0x1305 34 #define NS2501_DID 0x6726 35 36 #define NS2501_VID_LO 0x00 37 #define NS2501_VID_HI 0x01 38 #define NS2501_DID_LO 0x02 39 #define NS2501_DID_HI 0x03 40 #define NS2501_REV 0x04 41 #define NS2501_RSVD 0x05 42 #define NS2501_FREQ_LO 0x06 43 #define NS2501_FREQ_HI 0x07 44 45 #define NS2501_REG8 0x08 46 #define NS2501_8_VEN (1<<5) 47 #define NS2501_8_HEN (1<<4) 48 #define NS2501_8_DSEL (1<<3) 49 #define NS2501_8_BPAS (1<<2) 50 #define NS2501_8_RSVD (1<<1) 51 #define NS2501_8_PD (1<<0) 52 53 #define NS2501_REG9 0x09 54 #define NS2501_9_VLOW (1<<7) 55 #define NS2501_9_MSEL_MASK (0x7<<4) 56 #define NS2501_9_TSEL (1<<3) 57 #define NS2501_9_RSEN (1<<2) 58 #define NS2501_9_RSVD (1<<1) 59 #define NS2501_9_MDI (1<<0) 60 61 #define NS2501_REGC 0x0c 62 63 /* 64 * The following registers are not part of the official datasheet 65 * and are the result of reverse engineering. 66 */ 67 68 /* 69 * Register c0 controls how the DVO synchronizes with 70 * its input. 71 */ 72 #define NS2501_REGC0 0xc0 73 #define NS2501_C0_ENABLE (1<<0) /* enable the DVO sync in general */ 74 #define NS2501_C0_HSYNC (1<<1) /* synchronize horizontal with input */ 75 #define NS2501_C0_VSYNC (1<<2) /* synchronize vertical with input */ 76 #define NS2501_C0_RESET (1<<7) /* reset the synchronization flip/flops */ 77 78 /* 79 * Register 41 is somehow related to the sync register and sync 80 * configuration. It should be 0x32 whenever regC0 is 0x05 (hsync off) 81 * and 0x00 otherwise. 82 */ 83 #define NS2501_REG41 0x41 84 85 /* 86 * this register controls the dithering of the DVO 87 * One bit enables it, the other define the dithering depth. 88 * The higher the value, the lower the dithering depth. 89 */ 90 #define NS2501_F9_REG 0xf9 91 #define NS2501_F9_ENABLE (1<<0) /* if set, dithering is enabled */ 92 #define NS2501_F9_DITHER_MASK (0x7f<<1) /* controls the dither depth */ 93 #define NS2501_F9_DITHER_SHIFT 1 /* shifts the dither mask */ 94 95 /* 96 * PLL configuration register. This is a pair of registers, 97 * one single byte register at 1B, and a pair at 1C,1D. 98 * These registers are counters/dividers. 99 */ 100 #define NS2501_REG1B 0x1b /* one byte PLL control register */ 101 #define NS2501_REG1C 0x1c /* low-part of the second register */ 102 #define NS2501_REG1D 0x1d /* high-part of the second register */ 103 104 /* 105 * Scaler control registers. Horizontal at b8,b9, 106 * vertical at 10,11. The scale factor is computed as 107 * 2^16/control-value. The low-byte comes first. 108 */ 109 #define NS2501_REG10 0x10 /* low-byte vertical scaler */ 110 #define NS2501_REG11 0x11 /* high-byte vertical scaler */ 111 #define NS2501_REGB8 0xb8 /* low-byte horizontal scaler */ 112 #define NS2501_REGB9 0xb9 /* high-byte horizontal scaler */ 113 114 /* 115 * Display window definition. This consists of four registers 116 * per dimension. One register pair defines the start of the 117 * display, one the end. 118 * As far as I understand, this defines the window within which 119 * the scaler samples the input. 120 */ 121 #define NS2501_REGC1 0xc1 /* low-byte horizontal display start */ 122 #define NS2501_REGC2 0xc2 /* high-byte horizontal display start */ 123 #define NS2501_REGC3 0xc3 /* low-byte horizontal display stop */ 124 #define NS2501_REGC4 0xc4 /* high-byte horizontal display stop */ 125 #define NS2501_REGC5 0xc5 /* low-byte vertical display start */ 126 #define NS2501_REGC6 0xc6 /* high-byte vertical display start */ 127 #define NS2501_REGC7 0xc7 /* low-byte vertical display stop */ 128 #define NS2501_REGC8 0xc8 /* high-byte vertical display stop */ 129 130 /* 131 * The following register pair seems to define the start of 132 * the vertical sync. If automatic syncing is enabled, and the 133 * register value defines a sync pulse that is later than the 134 * incoming sync, then the register value is ignored and the 135 * external hsync triggers the synchronization. 136 */ 137 #define NS2501_REG80 0x80 /* low-byte vsync-start */ 138 #define NS2501_REG81 0x81 /* high-byte vsync-start */ 139 140 /* 141 * The following register pair seems to define the total number 142 * of lines created at the output side of the scaler. 143 * This is again a low-high register pair. 144 */ 145 #define NS2501_REG82 0x82 /* output display height, low byte */ 146 #define NS2501_REG83 0x83 /* output display height, high byte */ 147 148 /* 149 * The following registers define the end of the front-porch 150 * in horizontal and vertical position and hence allow to shift 151 * the image left/right or up/down. 152 */ 153 #define NS2501_REG98 0x98 /* horizontal start of display + 256, low */ 154 #define NS2501_REG99 0x99 /* horizontal start of display + 256, high */ 155 #define NS2501_REG8E 0x8e /* vertical start of the display, low byte */ 156 #define NS2501_REG8F 0x8f /* vertical start of the display, high byte */ 157 158 /* 159 * The following register pair control the function of the 160 * backlight and the DVO output. To enable the corresponding 161 * function, the corresponding bit must be set in both registers. 162 */ 163 #define NS2501_REG34 0x34 /* DVO enable functions, first register */ 164 #define NS2501_REG35 0x35 /* DVO enable functions, second register */ 165 #define NS2501_34_ENABLE_OUTPUT (1<<0) /* enable DVO output */ 166 #define NS2501_34_ENABLE_BACKLIGHT (1<<1) /* enable backlight */ 167 168 /* 169 * Registers 9C and 9D define the vertical output offset 170 * of the visible region. 171 */ 172 #define NS2501_REG9C 0x9c 173 #define NS2501_REG9D 0x9d 174 175 /* 176 * The register 9F defines the dithering. This requires the 177 * scaler to be ON. Bit 0 enables dithering, the remaining 178 * bits control the depth of the dither. The higher the value, 179 * the LOWER the dithering amplitude. A good value seems to be 180 * 15 (total register value). 181 */ 182 #define NS2501_REGF9 0xf9 183 #define NS2501_F9_ENABLE_DITHER (1<<0) /* enable dithering */ 184 #define NS2501_F9_DITHER_MASK (0x7f<<1) /* dither masking */ 185 #define NS2501_F9_DITHER_SHIFT 1 /* upshift of the dither mask */ 186 187 enum { 188 MODE_640x480, 189 MODE_800x600, 190 MODE_1024x768, 191 }; 192 193 struct ns2501_reg { 194 uint8_t offset; 195 uint8_t value; 196 }; 197 198 /* 199 * The following structure keeps the complete configuration of 200 * the DVO, given a specific output configuration. 201 * This is pretty much guess-work from reverse-engineering, so 202 * read all this with a grain of salt. 203 */ 204 struct ns2501_configuration { 205 uint8_t sync; /* configuration of the C0 register */ 206 uint8_t conf; /* configuration register 8 */ 207 uint8_t syncb; /* configuration register 41 */ 208 uint8_t dither; /* configuration of the dithering */ 209 uint8_t pll_a; /* PLL configuration, register A, 1B */ 210 uint16_t pll_b; /* PLL configuration, register B, 1C/1D */ 211 uint16_t hstart; /* horizontal start, registers C1/C2 */ 212 uint16_t hstop; /* horizontal total, registers C3/C4 */ 213 uint16_t vstart; /* vertical start, registers C5/C6 */ 214 uint16_t vstop; /* vertical total, registers C7/C8 */ 215 uint16_t vsync; /* manual vertical sync start, 80/81 */ 216 uint16_t vtotal; /* number of lines generated, 82/83 */ 217 uint16_t hpos; /* horizontal position + 256, 98/99 */ 218 uint16_t vpos; /* vertical position, 8e/8f */ 219 uint16_t voffs; /* vertical output offset, 9c/9d */ 220 uint16_t hscale; /* horizontal scaling factor, b8/b9 */ 221 uint16_t vscale; /* vertical scaling factor, 10/11 */ 222 }; 223 224 /* 225 * DVO configuration values, partially based on what the BIOS 226 * of the Fujitsu Lifebook S6010 writes into registers, 227 * partially found by manual tweaking. These configurations assume 228 * a 1024x768 panel. 229 */ 230 static const struct ns2501_configuration ns2501_modes[] = { 231 [MODE_640x480] = { 232 .sync = NS2501_C0_ENABLE | NS2501_C0_VSYNC, 233 .conf = NS2501_8_VEN | NS2501_8_HEN | NS2501_8_PD, 234 .syncb = 0x32, 235 .dither = 0x0f, 236 .pll_a = 17, 237 .pll_b = 852, 238 .hstart = 144, 239 .hstop = 783, 240 .vstart = 22, 241 .vstop = 514, 242 .vsync = 2047, /* actually, ignored with this config */ 243 .vtotal = 1341, 244 .hpos = 0, 245 .vpos = 16, 246 .voffs = 36, 247 .hscale = 40960, 248 .vscale = 40960 249 }, 250 [MODE_800x600] = { 251 .sync = NS2501_C0_ENABLE | 252 NS2501_C0_HSYNC | NS2501_C0_VSYNC, 253 .conf = NS2501_8_VEN | NS2501_8_HEN | NS2501_8_PD, 254 .syncb = 0x00, 255 .dither = 0x0f, 256 .pll_a = 25, 257 .pll_b = 612, 258 .hstart = 215, 259 .hstop = 1016, 260 .vstart = 26, 261 .vstop = 627, 262 .vsync = 807, 263 .vtotal = 1341, 264 .hpos = 0, 265 .vpos = 4, 266 .voffs = 35, 267 .hscale = 51248, 268 .vscale = 51232 269 }, 270 [MODE_1024x768] = { 271 .sync = NS2501_C0_ENABLE | NS2501_C0_VSYNC, 272 .conf = NS2501_8_VEN | NS2501_8_HEN | NS2501_8_PD, 273 .syncb = 0x32, 274 .dither = 0x0f, 275 .pll_a = 11, 276 .pll_b = 1350, 277 .hstart = 276, 278 .hstop = 1299, 279 .vstart = 15, 280 .vstop = 1056, 281 .vsync = 2047, 282 .vtotal = 1341, 283 .hpos = 0, 284 .vpos = 7, 285 .voffs = 27, 286 .hscale = 65535, 287 .vscale = 65535 288 } 289 }; 290 291 /* 292 * Other configuration values left by the BIOS of the 293 * Fujitsu S6010 in the DVO control registers. Their 294 * value does not depend on the BIOS and their meaning 295 * is unknown. 296 */ 297 298 static const struct ns2501_reg mode_agnostic_values[] = { 299 /* 08 is mode specific */ 300 [0] = { .offset = 0x0a, .value = 0x81, }, 301 /* 10,11 are part of the mode specific configuration */ 302 [1] = { .offset = 0x12, .value = 0x02, }, 303 [2] = { .offset = 0x18, .value = 0x07, }, 304 [3] = { .offset = 0x19, .value = 0x00, }, 305 [4] = { .offset = 0x1a, .value = 0x00, }, /* PLL?, ignored */ 306 /* 1b,1c,1d are part of the mode specific configuration */ 307 [5] = { .offset = 0x1e, .value = 0x02, }, 308 [6] = { .offset = 0x1f, .value = 0x40, }, 309 [7] = { .offset = 0x20, .value = 0x00, }, 310 [8] = { .offset = 0x21, .value = 0x00, }, 311 [9] = { .offset = 0x22, .value = 0x00, }, 312 [10] = { .offset = 0x23, .value = 0x00, }, 313 [11] = { .offset = 0x24, .value = 0x00, }, 314 [12] = { .offset = 0x25, .value = 0x00, }, 315 [13] = { .offset = 0x26, .value = 0x00, }, 316 [14] = { .offset = 0x27, .value = 0x00, }, 317 [15] = { .offset = 0x7e, .value = 0x18, }, 318 /* 80-84 are part of the mode-specific configuration */ 319 [16] = { .offset = 0x84, .value = 0x00, }, 320 [17] = { .offset = 0x85, .value = 0x00, }, 321 [18] = { .offset = 0x86, .value = 0x00, }, 322 [19] = { .offset = 0x87, .value = 0x00, }, 323 [20] = { .offset = 0x88, .value = 0x00, }, 324 [21] = { .offset = 0x89, .value = 0x00, }, 325 [22] = { .offset = 0x8a, .value = 0x00, }, 326 [23] = { .offset = 0x8b, .value = 0x00, }, 327 [24] = { .offset = 0x8c, .value = 0x10, }, 328 [25] = { .offset = 0x8d, .value = 0x02, }, 329 /* 8e,8f are part of the mode-specific configuration */ 330 [26] = { .offset = 0x90, .value = 0xff, }, 331 [27] = { .offset = 0x91, .value = 0x07, }, 332 [28] = { .offset = 0x92, .value = 0xa0, }, 333 [29] = { .offset = 0x93, .value = 0x02, }, 334 [30] = { .offset = 0x94, .value = 0x00, }, 335 [31] = { .offset = 0x95, .value = 0x00, }, 336 [32] = { .offset = 0x96, .value = 0x05, }, 337 [33] = { .offset = 0x97, .value = 0x00, }, 338 /* 98,99 are part of the mode-specific configuration */ 339 [34] = { .offset = 0x9a, .value = 0x88, }, 340 [35] = { .offset = 0x9b, .value = 0x00, }, 341 /* 9c,9d are part of the mode-specific configuration */ 342 [36] = { .offset = 0x9e, .value = 0x25, }, 343 [37] = { .offset = 0x9f, .value = 0x03, }, 344 [38] = { .offset = 0xa0, .value = 0x28, }, 345 [39] = { .offset = 0xa1, .value = 0x01, }, 346 [40] = { .offset = 0xa2, .value = 0x28, }, 347 [41] = { .offset = 0xa3, .value = 0x05, }, 348 /* register 0xa4 is mode specific, but 0x80..0x84 works always */ 349 [42] = { .offset = 0xa4, .value = 0x84, }, 350 [43] = { .offset = 0xa5, .value = 0x00, }, 351 [44] = { .offset = 0xa6, .value = 0x00, }, 352 [45] = { .offset = 0xa7, .value = 0x00, }, 353 [46] = { .offset = 0xa8, .value = 0x00, }, 354 /* 0xa9 to 0xab are mode specific, but have no visible effect */ 355 [47] = { .offset = 0xa9, .value = 0x04, }, 356 [48] = { .offset = 0xaa, .value = 0x70, }, 357 [49] = { .offset = 0xab, .value = 0x4f, }, 358 [50] = { .offset = 0xac, .value = 0x00, }, 359 [51] = { .offset = 0xad, .value = 0x00, }, 360 [52] = { .offset = 0xb6, .value = 0x09, }, 361 [53] = { .offset = 0xb7, .value = 0x03, }, 362 /* b8,b9 are part of the mode-specific configuration */ 363 [54] = { .offset = 0xba, .value = 0x00, }, 364 [55] = { .offset = 0xbb, .value = 0x20, }, 365 [56] = { .offset = 0xf3, .value = 0x90, }, 366 [57] = { .offset = 0xf4, .value = 0x00, }, 367 [58] = { .offset = 0xf7, .value = 0x88, }, 368 /* f8 is mode specific, but the value does not matter */ 369 [59] = { .offset = 0xf8, .value = 0x0a, }, 370 [60] = { .offset = 0xf9, .value = 0x00, } 371 }; 372 373 static const struct ns2501_reg regs_init[] = { 374 [0] = { .offset = 0x35, .value = 0xff, }, 375 [1] = { .offset = 0x34, .value = 0x00, }, 376 [2] = { .offset = 0x08, .value = 0x30, }, 377 }; 378 379 struct ns2501_priv { 380 bool quiet; 381 const struct ns2501_configuration *conf; 382 }; 383 384 #define NSPTR(d) ((NS2501Ptr)(d->DriverPrivate.ptr)) 385 386 /* 387 ** Read a register from the ns2501. 388 ** Returns true if successful, false otherwise. 389 ** If it returns false, it might be wise to enable the 390 ** DVO with the above function. 391 */ 392 static bool ns2501_readb(struct intel_dvo_device *dvo, int addr, uint8_t * ch) 393 { 394 struct ns2501_priv *ns = dvo->dev_priv; 395 struct i2c_adapter *adapter = dvo->i2c_bus; 396 u8 out_buf[2]; 397 u8 in_buf[2]; 398 399 struct i2c_msg msgs[] = { 400 { 401 .addr = dvo->slave_addr, 402 .flags = 0, 403 .len = 1, 404 .buf = out_buf, 405 }, 406 { 407 .addr = dvo->slave_addr, 408 .flags = I2C_M_RD, 409 .len = 1, 410 .buf = in_buf, 411 } 412 }; 413 414 out_buf[0] = addr; 415 out_buf[1] = 0; 416 417 if (i2c_transfer(adapter, msgs, 2) == 2) { 418 *ch = in_buf[0]; 419 return true; 420 } 421 422 if (!ns->quiet) { 423 DRM_DEBUG_KMS 424 ("Unable to read register 0x%02x from %s:0x%02x.\n", addr, 425 adapter->name, dvo->slave_addr); 426 } 427 428 return false; 429 } 430 431 /* 432 ** Write a register to the ns2501. 433 ** Returns true if successful, false otherwise. 434 ** If it returns false, it might be wise to enable the 435 ** DVO with the above function. 436 */ 437 static bool ns2501_writeb(struct intel_dvo_device *dvo, int addr, uint8_t ch) 438 { 439 struct ns2501_priv *ns = dvo->dev_priv; 440 struct i2c_adapter *adapter = dvo->i2c_bus; 441 uint8_t out_buf[2]; 442 443 struct i2c_msg msg = { 444 .addr = dvo->slave_addr, 445 .flags = 0, 446 .len = 2, 447 .buf = out_buf, 448 }; 449 450 out_buf[0] = addr; 451 out_buf[1] = ch; 452 453 if (i2c_transfer(adapter, &msg, 1) == 1) { 454 return true; 455 } 456 457 if (!ns->quiet) { 458 DRM_DEBUG_KMS("Unable to write register 0x%02x to %s:%d\n", 459 addr, adapter->name, dvo->slave_addr); 460 } 461 462 return false; 463 } 464 465 /* National Semiconductor 2501 driver for chip on i2c bus 466 * scan for the chip on the bus. 467 * Hope the VBIOS initialized the PLL correctly so we can 468 * talk to it. If not, it will not be seen and not detected. 469 * Bummer! 470 */ 471 static bool ns2501_init(struct intel_dvo_device *dvo, 472 struct i2c_adapter *adapter) 473 { 474 /* this will detect the NS2501 chip on the specified i2c bus */ 475 struct ns2501_priv *ns; 476 unsigned char ch; 477 478 ns = kzalloc(sizeof(struct ns2501_priv), GFP_KERNEL); 479 if (ns == NULL) 480 return false; 481 482 dvo->i2c_bus = adapter; 483 dvo->dev_priv = ns; 484 ns->quiet = true; 485 486 if (!ns2501_readb(dvo, NS2501_VID_LO, &ch)) 487 goto out; 488 489 if (ch != (NS2501_VID & 0xff)) { 490 DRM_DEBUG_KMS("ns2501 not detected got %d: from %s Slave %d.\n", 491 ch, adapter->name, dvo->slave_addr); 492 goto out; 493 } 494 495 if (!ns2501_readb(dvo, NS2501_DID_LO, &ch)) 496 goto out; 497 498 if (ch != (NS2501_DID & 0xff)) { 499 DRM_DEBUG_KMS("ns2501 not detected got %d: from %s Slave %d.\n", 500 ch, adapter->name, dvo->slave_addr); 501 goto out; 502 } 503 ns->quiet = false; 504 505 DRM_DEBUG_KMS("init ns2501 dvo controller successfully!\n"); 506 507 return true; 508 509 out: 510 kfree(ns); 511 return false; 512 } 513 514 static enum drm_connector_status ns2501_detect(struct intel_dvo_device *dvo) 515 { 516 /* 517 * This is a Laptop display, it doesn't have hotplugging. 518 * Even if not, the detection bit of the 2501 is unreliable as 519 * it only works for some display types. 520 * It is even more unreliable as the PLL must be active for 521 * allowing reading from the chiop. 522 */ 523 return connector_status_connected; 524 } 525 526 static enum drm_mode_status ns2501_mode_valid(struct intel_dvo_device *dvo, 527 struct drm_display_mode *mode) 528 { 529 DRM_DEBUG_KMS 530 ("is mode valid (hdisplay=%d,htotal=%d,vdisplay=%d,vtotal=%d)\n", 531 mode->hdisplay, mode->htotal, mode->vdisplay, mode->vtotal); 532 533 /* 534 * Currently, these are all the modes I have data from. 535 * More might exist. Unclear how to find the native resolution 536 * of the panel in here so we could always accept it 537 * by disabling the scaler. 538 */ 539 if ((mode->hdisplay == 640 && mode->vdisplay == 480 && mode->clock == 25175) || 540 (mode->hdisplay == 800 && mode->vdisplay == 600 && mode->clock == 40000) || 541 (mode->hdisplay == 1024 && mode->vdisplay == 768 && mode->clock == 65000)) { 542 return MODE_OK; 543 } else { 544 return MODE_ONE_SIZE; /* Is this a reasonable error? */ 545 } 546 } 547 548 static void ns2501_mode_set(struct intel_dvo_device *dvo, 549 const struct drm_display_mode *mode, 550 const struct drm_display_mode *adjusted_mode) 551 { 552 const struct ns2501_configuration *conf; 553 struct ns2501_priv *ns = (struct ns2501_priv *)(dvo->dev_priv); 554 int mode_idx, i; 555 556 DRM_DEBUG_KMS 557 ("set mode (hdisplay=%d,htotal=%d,vdisplay=%d,vtotal=%d).\n", 558 mode->hdisplay, mode->htotal, mode->vdisplay, mode->vtotal); 559 560 DRM_DEBUG_KMS("Detailed requested mode settings are:\n" 561 "clock : %d kHz\n" 562 "hdisplay : %d\n" 563 "hblank start : %d\n" 564 "hblank end : %d\n" 565 "hsync start : %d\n" 566 "hsync end : %d\n" 567 "htotal : %d\n" 568 "hskew : %d\n" 569 "vdisplay : %d\n" 570 "vblank start : %d\n" 571 "hblank end : %d\n" 572 "vsync start : %d\n" 573 "vsync end : %d\n" 574 "vtotal : %d\n", 575 adjusted_mode->crtc_clock, 576 adjusted_mode->crtc_hdisplay, 577 adjusted_mode->crtc_hblank_start, 578 adjusted_mode->crtc_hblank_end, 579 adjusted_mode->crtc_hsync_start, 580 adjusted_mode->crtc_hsync_end, 581 adjusted_mode->crtc_htotal, 582 adjusted_mode->crtc_hskew, 583 adjusted_mode->crtc_vdisplay, 584 adjusted_mode->crtc_vblank_start, 585 adjusted_mode->crtc_vblank_end, 586 adjusted_mode->crtc_vsync_start, 587 adjusted_mode->crtc_vsync_end, 588 adjusted_mode->crtc_vtotal); 589 590 if (mode->hdisplay == 640 && mode->vdisplay == 480) 591 mode_idx = MODE_640x480; 592 else if (mode->hdisplay == 800 && mode->vdisplay == 600) 593 mode_idx = MODE_800x600; 594 else if (mode->hdisplay == 1024 && mode->vdisplay == 768) 595 mode_idx = MODE_1024x768; 596 else 597 return; 598 599 /* Hopefully doing it every time won't hurt... */ 600 for (i = 0; i < ARRAY_SIZE(regs_init); i++) 601 ns2501_writeb(dvo, regs_init[i].offset, regs_init[i].value); 602 603 /* Write the mode-agnostic values */ 604 for (i = 0; i < ARRAY_SIZE(mode_agnostic_values); i++) 605 ns2501_writeb(dvo, mode_agnostic_values[i].offset, 606 mode_agnostic_values[i].value); 607 608 /* Write now the mode-specific configuration */ 609 conf = ns2501_modes + mode_idx; 610 ns->conf = conf; 611 612 ns2501_writeb(dvo, NS2501_REG8, conf->conf); 613 ns2501_writeb(dvo, NS2501_REG1B, conf->pll_a); 614 ns2501_writeb(dvo, NS2501_REG1C, conf->pll_b & 0xff); 615 ns2501_writeb(dvo, NS2501_REG1D, conf->pll_b >> 8); 616 ns2501_writeb(dvo, NS2501_REGC1, conf->hstart & 0xff); 617 ns2501_writeb(dvo, NS2501_REGC2, conf->hstart >> 8); 618 ns2501_writeb(dvo, NS2501_REGC3, conf->hstop & 0xff); 619 ns2501_writeb(dvo, NS2501_REGC4, conf->hstop >> 8); 620 ns2501_writeb(dvo, NS2501_REGC5, conf->vstart & 0xff); 621 ns2501_writeb(dvo, NS2501_REGC6, conf->vstart >> 8); 622 ns2501_writeb(dvo, NS2501_REGC7, conf->vstop & 0xff); 623 ns2501_writeb(dvo, NS2501_REGC8, conf->vstop >> 8); 624 ns2501_writeb(dvo, NS2501_REG80, conf->vsync & 0xff); 625 ns2501_writeb(dvo, NS2501_REG81, conf->vsync >> 8); 626 ns2501_writeb(dvo, NS2501_REG82, conf->vtotal & 0xff); 627 ns2501_writeb(dvo, NS2501_REG83, conf->vtotal >> 8); 628 ns2501_writeb(dvo, NS2501_REG98, conf->hpos & 0xff); 629 ns2501_writeb(dvo, NS2501_REG99, conf->hpos >> 8); 630 ns2501_writeb(dvo, NS2501_REG8E, conf->vpos & 0xff); 631 ns2501_writeb(dvo, NS2501_REG8F, conf->vpos >> 8); 632 ns2501_writeb(dvo, NS2501_REG9C, conf->voffs & 0xff); 633 ns2501_writeb(dvo, NS2501_REG9D, conf->voffs >> 8); 634 ns2501_writeb(dvo, NS2501_REGB8, conf->hscale & 0xff); 635 ns2501_writeb(dvo, NS2501_REGB9, conf->hscale >> 8); 636 ns2501_writeb(dvo, NS2501_REG10, conf->vscale & 0xff); 637 ns2501_writeb(dvo, NS2501_REG11, conf->vscale >> 8); 638 ns2501_writeb(dvo, NS2501_REGF9, conf->dither); 639 ns2501_writeb(dvo, NS2501_REG41, conf->syncb); 640 ns2501_writeb(dvo, NS2501_REGC0, conf->sync); 641 } 642 643 /* set the NS2501 power state */ 644 static bool ns2501_get_hw_state(struct intel_dvo_device *dvo) 645 { 646 unsigned char ch; 647 648 if (!ns2501_readb(dvo, NS2501_REG8, &ch)) 649 return false; 650 651 return ch & NS2501_8_PD; 652 } 653 654 /* set the NS2501 power state */ 655 static void ns2501_dpms(struct intel_dvo_device *dvo, bool enable) 656 { 657 struct ns2501_priv *ns = (struct ns2501_priv *)(dvo->dev_priv); 658 659 DRM_DEBUG_KMS("Trying set the dpms of the DVO to %i\n", enable); 660 661 if (enable) { 662 ns2501_writeb(dvo, NS2501_REGC0, ns->conf->sync | 0x08); 663 664 ns2501_writeb(dvo, NS2501_REG41, ns->conf->syncb); 665 666 ns2501_writeb(dvo, NS2501_REG34, NS2501_34_ENABLE_OUTPUT); 667 msleep(15); 668 669 ns2501_writeb(dvo, NS2501_REG8, 670 ns->conf->conf | NS2501_8_BPAS); 671 if (!(ns->conf->conf & NS2501_8_BPAS)) 672 ns2501_writeb(dvo, NS2501_REG8, ns->conf->conf); 673 msleep(200); 674 675 ns2501_writeb(dvo, NS2501_REG34, 676 NS2501_34_ENABLE_OUTPUT | NS2501_34_ENABLE_BACKLIGHT); 677 678 ns2501_writeb(dvo, NS2501_REGC0, ns->conf->sync); 679 } else { 680 ns2501_writeb(dvo, NS2501_REG34, NS2501_34_ENABLE_OUTPUT); 681 msleep(200); 682 683 ns2501_writeb(dvo, NS2501_REG8, NS2501_8_VEN | NS2501_8_HEN | 684 NS2501_8_BPAS); 685 msleep(15); 686 687 ns2501_writeb(dvo, NS2501_REG34, 0x00); 688 } 689 } 690 691 static void ns2501_destroy(struct intel_dvo_device *dvo) 692 { 693 struct ns2501_priv *ns = dvo->dev_priv; 694 695 if (ns) { 696 kfree(ns); 697 dvo->dev_priv = NULL; 698 } 699 } 700 701 const struct intel_dvo_dev_ops ns2501_ops = { 702 .init = ns2501_init, 703 .detect = ns2501_detect, 704 .mode_valid = ns2501_mode_valid, 705 .mode_set = ns2501_mode_set, 706 .dpms = ns2501_dpms, 707 .get_hw_state = ns2501_get_hw_state, 708 .destroy = ns2501_destroy, 709 }; 710