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 "i915_drv.h" 30 #include "i915_reg.h" 31 #include "intel_display_types.h" 32 #include "intel_dvo_dev.h" 33 34 #define NS2501_VID 0x1305 35 #define NS2501_DID 0x6726 36 37 #define NS2501_VID_LO 0x00 38 #define NS2501_VID_HI 0x01 39 #define NS2501_DID_LO 0x02 40 #define NS2501_DID_HI 0x03 41 #define NS2501_REV 0x04 42 #define NS2501_RSVD 0x05 43 #define NS2501_FREQ_LO 0x06 44 #define NS2501_FREQ_HI 0x07 45 46 #define NS2501_REG8 0x08 47 #define NS2501_8_VEN (1<<5) 48 #define NS2501_8_HEN (1<<4) 49 #define NS2501_8_DSEL (1<<3) 50 #define NS2501_8_BPAS (1<<2) 51 #define NS2501_8_RSVD (1<<1) 52 #define NS2501_8_PD (1<<0) 53 54 #define NS2501_REG9 0x09 55 #define NS2501_9_VLOW (1<<7) 56 #define NS2501_9_MSEL_MASK (0x7<<4) 57 #define NS2501_9_TSEL (1<<3) 58 #define NS2501_9_RSEN (1<<2) 59 #define NS2501_9_RSVD (1<<1) 60 #define NS2501_9_MDI (1<<0) 61 62 #define NS2501_REGC 0x0c 63 64 /* 65 * The following registers are not part of the official datasheet 66 * and are the result of reverse engineering. 67 */ 68 69 /* 70 * Register c0 controls how the DVO synchronizes with 71 * its input. 72 */ 73 #define NS2501_REGC0 0xc0 74 #define NS2501_C0_ENABLE (1<<0) /* enable the DVO sync in general */ 75 #define NS2501_C0_HSYNC (1<<1) /* synchronize horizontal with input */ 76 #define NS2501_C0_VSYNC (1<<2) /* synchronize vertical with input */ 77 #define NS2501_C0_RESET (1<<7) /* reset the synchronization flip/flops */ 78 79 /* 80 * Register 41 is somehow related to the sync register and sync 81 * configuration. It should be 0x32 whenever regC0 is 0x05 (hsync off) 82 * and 0x00 otherwise. 83 */ 84 #define NS2501_REG41 0x41 85 86 /* 87 * this register controls the dithering of the DVO 88 * One bit enables it, the other define the dithering depth. 89 * The higher the value, the lower the dithering depth. 90 */ 91 #define NS2501_F9_REG 0xf9 92 #define NS2501_F9_ENABLE (1<<0) /* if set, dithering is enabled */ 93 #define NS2501_F9_DITHER_MASK (0x7f<<1) /* controls the dither depth */ 94 #define NS2501_F9_DITHER_SHIFT 1 /* shifts the dither mask */ 95 96 /* 97 * PLL configuration register. This is a pair of registers, 98 * one single byte register at 1B, and a pair at 1C,1D. 99 * These registers are counters/dividers. 100 */ 101 #define NS2501_REG1B 0x1b /* one byte PLL control register */ 102 #define NS2501_REG1C 0x1c /* low-part of the second register */ 103 #define NS2501_REG1D 0x1d /* high-part of the second register */ 104 105 /* 106 * Scaler control registers. Horizontal at b8,b9, 107 * vertical at 10,11. The scale factor is computed as 108 * 2^16/control-value. The low-byte comes first. 109 */ 110 #define NS2501_REG10 0x10 /* low-byte vertical scaler */ 111 #define NS2501_REG11 0x11 /* high-byte vertical scaler */ 112 #define NS2501_REGB8 0xb8 /* low-byte horizontal scaler */ 113 #define NS2501_REGB9 0xb9 /* high-byte horizontal scaler */ 114 115 /* 116 * Display window definition. This consists of four registers 117 * per dimension. One register pair defines the start of the 118 * display, one the end. 119 * As far as I understand, this defines the window within which 120 * the scaler samples the input. 121 */ 122 #define NS2501_REGC1 0xc1 /* low-byte horizontal display start */ 123 #define NS2501_REGC2 0xc2 /* high-byte horizontal display start */ 124 #define NS2501_REGC3 0xc3 /* low-byte horizontal display stop */ 125 #define NS2501_REGC4 0xc4 /* high-byte horizontal display stop */ 126 #define NS2501_REGC5 0xc5 /* low-byte vertical display start */ 127 #define NS2501_REGC6 0xc6 /* high-byte vertical display start */ 128 #define NS2501_REGC7 0xc7 /* low-byte vertical display stop */ 129 #define NS2501_REGC8 0xc8 /* high-byte vertical display stop */ 130 131 /* 132 * The following register pair seems to define the start of 133 * the vertical sync. If automatic syncing is enabled, and the 134 * register value defines a sync pulse that is later than the 135 * incoming sync, then the register value is ignored and the 136 * external hsync triggers the synchronization. 137 */ 138 #define NS2501_REG80 0x80 /* low-byte vsync-start */ 139 #define NS2501_REG81 0x81 /* high-byte vsync-start */ 140 141 /* 142 * The following register pair seems to define the total number 143 * of lines created at the output side of the scaler. 144 * This is again a low-high register pair. 145 */ 146 #define NS2501_REG82 0x82 /* output display height, low byte */ 147 #define NS2501_REG83 0x83 /* output display height, high byte */ 148 149 /* 150 * The following registers define the end of the front-porch 151 * in horizontal and vertical position and hence allow to shift 152 * the image left/right or up/down. 153 */ 154 #define NS2501_REG98 0x98 /* horizontal start of display + 256, low */ 155 #define NS2501_REG99 0x99 /* horizontal start of display + 256, high */ 156 #define NS2501_REG8E 0x8e /* vertical start of the display, low byte */ 157 #define NS2501_REG8F 0x8f /* vertical start of the display, high byte */ 158 159 /* 160 * The following register pair control the function of the 161 * backlight and the DVO output. To enable the corresponding 162 * function, the corresponding bit must be set in both registers. 163 */ 164 #define NS2501_REG34 0x34 /* DVO enable functions, first register */ 165 #define NS2501_REG35 0x35 /* DVO enable functions, second register */ 166 #define NS2501_34_ENABLE_OUTPUT (1<<0) /* enable DVO output */ 167 #define NS2501_34_ENABLE_BACKLIGHT (1<<1) /* enable backlight */ 168 169 /* 170 * Registers 9C and 9D define the vertical output offset 171 * of the visible region. 172 */ 173 #define NS2501_REG9C 0x9c 174 #define NS2501_REG9D 0x9d 175 176 /* 177 * The register 9F defines the dithering. This requires the 178 * scaler to be ON. Bit 0 enables dithering, the remaining 179 * bits control the depth of the dither. The higher the value, 180 * the LOWER the dithering amplitude. A good value seems to be 181 * 15 (total register value). 182 */ 183 #define NS2501_REGF9 0xf9 184 #define NS2501_F9_ENABLE_DITHER (1<<0) /* enable dithering */ 185 #define NS2501_F9_DITHER_MASK (0x7f<<1) /* dither masking */ 186 #define NS2501_F9_DITHER_SHIFT 1 /* upshift of the dither mask */ 187 188 enum { 189 MODE_640x480, 190 MODE_800x600, 191 MODE_1024x768, 192 }; 193 194 struct ns2501_reg { 195 u8 offset; 196 u8 value; 197 }; 198 199 /* 200 * The following structure keeps the complete configuration of 201 * the DVO, given a specific output configuration. 202 * This is pretty much guess-work from reverse-engineering, so 203 * read all this with a grain of salt. 204 */ 205 struct ns2501_configuration { 206 u8 sync; /* configuration of the C0 register */ 207 u8 conf; /* configuration register 8 */ 208 u8 syncb; /* configuration register 41 */ 209 u8 dither; /* configuration of the dithering */ 210 u8 pll_a; /* PLL configuration, register A, 1B */ 211 u16 pll_b; /* PLL configuration, register B, 1C/1D */ 212 u16 hstart; /* horizontal start, registers C1/C2 */ 213 u16 hstop; /* horizontal total, registers C3/C4 */ 214 u16 vstart; /* vertical start, registers C5/C6 */ 215 u16 vstop; /* vertical total, registers C7/C8 */ 216 u16 vsync; /* manual vertical sync start, 80/81 */ 217 u16 vtotal; /* number of lines generated, 82/83 */ 218 u16 hpos; /* horizontal position + 256, 98/99 */ 219 u16 vpos; /* vertical position, 8e/8f */ 220 u16 voffs; /* vertical output offset, 9c/9d */ 221 u16 hscale; /* horizontal scaling factor, b8/b9 */ 222 u16 vscale; /* vertical scaling factor, 10/11 */ 223 }; 224 225 /* 226 * DVO configuration values, partially based on what the BIOS 227 * of the Fujitsu Lifebook S6010 writes into registers, 228 * partially found by manual tweaking. These configurations assume 229 * a 1024x768 panel. 230 */ 231 static const struct ns2501_configuration ns2501_modes[] = { 232 [MODE_640x480] = { 233 .sync = NS2501_C0_ENABLE | NS2501_C0_VSYNC, 234 .conf = NS2501_8_VEN | NS2501_8_HEN | NS2501_8_PD, 235 .syncb = 0x32, 236 .dither = 0x0f, 237 .pll_a = 17, 238 .pll_b = 852, 239 .hstart = 144, 240 .hstop = 783, 241 .vstart = 22, 242 .vstop = 514, 243 .vsync = 2047, /* actually, ignored with this config */ 244 .vtotal = 1341, 245 .hpos = 0, 246 .vpos = 16, 247 .voffs = 36, 248 .hscale = 40960, 249 .vscale = 40960 250 }, 251 [MODE_800x600] = { 252 .sync = NS2501_C0_ENABLE | 253 NS2501_C0_HSYNC | NS2501_C0_VSYNC, 254 .conf = NS2501_8_VEN | NS2501_8_HEN | NS2501_8_PD, 255 .syncb = 0x00, 256 .dither = 0x0f, 257 .pll_a = 25, 258 .pll_b = 612, 259 .hstart = 215, 260 .hstop = 1016, 261 .vstart = 26, 262 .vstop = 627, 263 .vsync = 807, 264 .vtotal = 1341, 265 .hpos = 0, 266 .vpos = 4, 267 .voffs = 35, 268 .hscale = 51248, 269 .vscale = 51232 270 }, 271 [MODE_1024x768] = { 272 .sync = NS2501_C0_ENABLE | NS2501_C0_VSYNC, 273 .conf = NS2501_8_VEN | NS2501_8_HEN | NS2501_8_PD, 274 .syncb = 0x32, 275 .dither = 0x0f, 276 .pll_a = 11, 277 .pll_b = 1350, 278 .hstart = 276, 279 .hstop = 1299, 280 .vstart = 15, 281 .vstop = 1056, 282 .vsync = 2047, 283 .vtotal = 1341, 284 .hpos = 0, 285 .vpos = 7, 286 .voffs = 27, 287 .hscale = 65535, 288 .vscale = 65535 289 } 290 }; 291 292 /* 293 * Other configuration values left by the BIOS of the 294 * Fujitsu S6010 in the DVO control registers. Their 295 * value does not depend on the BIOS and their meaning 296 * is unknown. 297 */ 298 299 static const struct ns2501_reg mode_agnostic_values[] = { 300 /* 08 is mode specific */ 301 [0] = { .offset = 0x0a, .value = 0x81, }, 302 /* 10,11 are part of the mode specific configuration */ 303 [1] = { .offset = 0x12, .value = 0x02, }, 304 [2] = { .offset = 0x18, .value = 0x07, }, 305 [3] = { .offset = 0x19, .value = 0x00, }, 306 [4] = { .offset = 0x1a, .value = 0x00, }, /* PLL?, ignored */ 307 /* 1b,1c,1d are part of the mode specific configuration */ 308 [5] = { .offset = 0x1e, .value = 0x02, }, 309 [6] = { .offset = 0x1f, .value = 0x40, }, 310 [7] = { .offset = 0x20, .value = 0x00, }, 311 [8] = { .offset = 0x21, .value = 0x00, }, 312 [9] = { .offset = 0x22, .value = 0x00, }, 313 [10] = { .offset = 0x23, .value = 0x00, }, 314 [11] = { .offset = 0x24, .value = 0x00, }, 315 [12] = { .offset = 0x25, .value = 0x00, }, 316 [13] = { .offset = 0x26, .value = 0x00, }, 317 [14] = { .offset = 0x27, .value = 0x00, }, 318 [15] = { .offset = 0x7e, .value = 0x18, }, 319 /* 80-84 are part of the mode-specific configuration */ 320 [16] = { .offset = 0x84, .value = 0x00, }, 321 [17] = { .offset = 0x85, .value = 0x00, }, 322 [18] = { .offset = 0x86, .value = 0x00, }, 323 [19] = { .offset = 0x87, .value = 0x00, }, 324 [20] = { .offset = 0x88, .value = 0x00, }, 325 [21] = { .offset = 0x89, .value = 0x00, }, 326 [22] = { .offset = 0x8a, .value = 0x00, }, 327 [23] = { .offset = 0x8b, .value = 0x00, }, 328 [24] = { .offset = 0x8c, .value = 0x10, }, 329 [25] = { .offset = 0x8d, .value = 0x02, }, 330 /* 8e,8f are part of the mode-specific configuration */ 331 [26] = { .offset = 0x90, .value = 0xff, }, 332 [27] = { .offset = 0x91, .value = 0x07, }, 333 [28] = { .offset = 0x92, .value = 0xa0, }, 334 [29] = { .offset = 0x93, .value = 0x02, }, 335 [30] = { .offset = 0x94, .value = 0x00, }, 336 [31] = { .offset = 0x95, .value = 0x00, }, 337 [32] = { .offset = 0x96, .value = 0x05, }, 338 [33] = { .offset = 0x97, .value = 0x00, }, 339 /* 98,99 are part of the mode-specific configuration */ 340 [34] = { .offset = 0x9a, .value = 0x88, }, 341 [35] = { .offset = 0x9b, .value = 0x00, }, 342 /* 9c,9d are part of the mode-specific configuration */ 343 [36] = { .offset = 0x9e, .value = 0x25, }, 344 [37] = { .offset = 0x9f, .value = 0x03, }, 345 [38] = { .offset = 0xa0, .value = 0x28, }, 346 [39] = { .offset = 0xa1, .value = 0x01, }, 347 [40] = { .offset = 0xa2, .value = 0x28, }, 348 [41] = { .offset = 0xa3, .value = 0x05, }, 349 /* register 0xa4 is mode specific, but 0x80..0x84 works always */ 350 [42] = { .offset = 0xa4, .value = 0x84, }, 351 [43] = { .offset = 0xa5, .value = 0x00, }, 352 [44] = { .offset = 0xa6, .value = 0x00, }, 353 [45] = { .offset = 0xa7, .value = 0x00, }, 354 [46] = { .offset = 0xa8, .value = 0x00, }, 355 /* 0xa9 to 0xab are mode specific, but have no visible effect */ 356 [47] = { .offset = 0xa9, .value = 0x04, }, 357 [48] = { .offset = 0xaa, .value = 0x70, }, 358 [49] = { .offset = 0xab, .value = 0x4f, }, 359 [50] = { .offset = 0xac, .value = 0x00, }, 360 [51] = { .offset = 0xad, .value = 0x00, }, 361 [52] = { .offset = 0xb6, .value = 0x09, }, 362 [53] = { .offset = 0xb7, .value = 0x03, }, 363 /* b8,b9 are part of the mode-specific configuration */ 364 [54] = { .offset = 0xba, .value = 0x00, }, 365 [55] = { .offset = 0xbb, .value = 0x20, }, 366 [56] = { .offset = 0xf3, .value = 0x90, }, 367 [57] = { .offset = 0xf4, .value = 0x00, }, 368 [58] = { .offset = 0xf7, .value = 0x88, }, 369 /* f8 is mode specific, but the value does not matter */ 370 [59] = { .offset = 0xf8, .value = 0x0a, }, 371 [60] = { .offset = 0xf9, .value = 0x00, } 372 }; 373 374 static const struct ns2501_reg regs_init[] = { 375 [0] = { .offset = 0x35, .value = 0xff, }, 376 [1] = { .offset = 0x34, .value = 0x00, }, 377 [2] = { .offset = 0x08, .value = 0x30, }, 378 }; 379 380 struct ns2501_priv { 381 bool quiet; 382 const struct ns2501_configuration *conf; 383 }; 384 385 #define NSPTR(d) ((NS2501Ptr)(d->DriverPrivate.ptr)) 386 387 /* 388 ** Read a register from the ns2501. 389 ** Returns true if successful, false otherwise. 390 ** If it returns false, it might be wise to enable the 391 ** DVO with the above function. 392 */ 393 static bool ns2501_readb(struct intel_dvo_device *dvo, int addr, u8 *ch) 394 { 395 struct ns2501_priv *ns = dvo->dev_priv; 396 struct i2c_adapter *adapter = dvo->i2c_bus; 397 u8 out_buf[2]; 398 u8 in_buf[2]; 399 400 struct i2c_msg msgs[] = { 401 { 402 .addr = dvo->slave_addr, 403 .flags = 0, 404 .len = 1, 405 .buf = out_buf, 406 }, 407 { 408 .addr = dvo->slave_addr, 409 .flags = I2C_M_RD, 410 .len = 1, 411 .buf = in_buf, 412 } 413 }; 414 415 out_buf[0] = addr; 416 out_buf[1] = 0; 417 418 if (i2c_transfer(adapter, msgs, 2) == 2) { 419 *ch = in_buf[0]; 420 return true; 421 } 422 423 if (!ns->quiet) { 424 DRM_DEBUG_KMS 425 ("Unable to read register 0x%02x from %s:0x%02x.\n", addr, 426 adapter->name, dvo->slave_addr); 427 } 428 429 return false; 430 } 431 432 /* 433 ** Write a register to the ns2501. 434 ** Returns true if successful, false otherwise. 435 ** If it returns false, it might be wise to enable the 436 ** DVO with the above function. 437 */ 438 static bool ns2501_writeb(struct intel_dvo_device *dvo, int addr, u8 ch) 439 { 440 struct ns2501_priv *ns = dvo->dev_priv; 441 struct i2c_adapter *adapter = dvo->i2c_bus; 442 u8 out_buf[2]; 443 444 struct i2c_msg msg = { 445 .addr = dvo->slave_addr, 446 .flags = 0, 447 .len = 2, 448 .buf = out_buf, 449 }; 450 451 out_buf[0] = addr; 452 out_buf[1] = ch; 453 454 if (i2c_transfer(adapter, &msg, 1) == 1) { 455 return true; 456 } 457 458 if (!ns->quiet) { 459 DRM_DEBUG_KMS("Unable to write register 0x%02x to %s:%d\n", 460 addr, adapter->name, dvo->slave_addr); 461 } 462 463 return false; 464 } 465 466 /* National Semiconductor 2501 driver for chip on i2c bus 467 * scan for the chip on the bus. 468 * Hope the VBIOS initialized the PLL correctly so we can 469 * talk to it. If not, it will not be seen and not detected. 470 * Bummer! 471 */ 472 static bool ns2501_init(struct intel_dvo_device *dvo, 473 struct i2c_adapter *adapter) 474 { 475 /* this will detect the NS2501 chip on the specified i2c bus */ 476 struct ns2501_priv *ns; 477 unsigned char ch; 478 479 ns = kzalloc(sizeof(struct ns2501_priv), GFP_KERNEL); 480 if (ns == NULL) 481 return false; 482 483 dvo->i2c_bus = adapter; 484 dvo->dev_priv = ns; 485 ns->quiet = true; 486 487 if (!ns2501_readb(dvo, NS2501_VID_LO, &ch)) 488 goto out; 489 490 if (ch != (NS2501_VID & 0xff)) { 491 DRM_DEBUG_KMS("ns2501 not detected got %d: from %s Slave %d.\n", 492 ch, adapter->name, dvo->slave_addr); 493 goto out; 494 } 495 496 if (!ns2501_readb(dvo, NS2501_DID_LO, &ch)) 497 goto out; 498 499 if (ch != (NS2501_DID & 0xff)) { 500 DRM_DEBUG_KMS("ns2501 not detected got %d: from %s Slave %d.\n", 501 ch, adapter->name, dvo->slave_addr); 502 goto out; 503 } 504 ns->quiet = false; 505 506 DRM_DEBUG_KMS("init ns2501 dvo controller successfully!\n"); 507 508 return true; 509 510 out: 511 kfree(ns); 512 return false; 513 } 514 515 static enum drm_connector_status ns2501_detect(struct intel_dvo_device *dvo) 516 { 517 /* 518 * This is a Laptop display, it doesn't have hotplugging. 519 * Even if not, the detection bit of the 2501 is unreliable as 520 * it only works for some display types. 521 * It is even more unreliable as the PLL must be active for 522 * allowing reading from the chiop. 523 */ 524 return connector_status_connected; 525 } 526 527 static enum drm_mode_status ns2501_mode_valid(struct intel_dvo_device *dvo, 528 struct drm_display_mode *mode) 529 { 530 DRM_DEBUG_KMS 531 ("is mode valid (hdisplay=%d,htotal=%d,vdisplay=%d,vtotal=%d)\n", 532 mode->hdisplay, mode->htotal, mode->vdisplay, mode->vtotal); 533 534 /* 535 * Currently, these are all the modes I have data from. 536 * More might exist. Unclear how to find the native resolution 537 * of the panel in here so we could always accept it 538 * by disabling the scaler. 539 */ 540 if ((mode->hdisplay == 640 && mode->vdisplay == 480 && mode->clock == 25175) || 541 (mode->hdisplay == 800 && mode->vdisplay == 600 && mode->clock == 40000) || 542 (mode->hdisplay == 1024 && mode->vdisplay == 768 && mode->clock == 65000)) { 543 return MODE_OK; 544 } else { 545 return MODE_ONE_SIZE; /* Is this a reasonable error? */ 546 } 547 } 548 549 static void ns2501_mode_set(struct intel_dvo_device *dvo, 550 const struct drm_display_mode *mode, 551 const struct drm_display_mode *adjusted_mode) 552 { 553 const struct ns2501_configuration *conf; 554 struct ns2501_priv *ns = (struct ns2501_priv *)(dvo->dev_priv); 555 int mode_idx, i; 556 557 DRM_DEBUG_KMS 558 ("set mode (hdisplay=%d,htotal=%d,vdisplay=%d,vtotal=%d).\n", 559 mode->hdisplay, mode->htotal, mode->vdisplay, mode->vtotal); 560 561 DRM_DEBUG_KMS("Detailed requested mode settings are:\n" 562 "clock : %d kHz\n" 563 "hdisplay : %d\n" 564 "hblank start : %d\n" 565 "hblank end : %d\n" 566 "hsync start : %d\n" 567 "hsync end : %d\n" 568 "htotal : %d\n" 569 "hskew : %d\n" 570 "vdisplay : %d\n" 571 "vblank start : %d\n" 572 "hblank end : %d\n" 573 "vsync start : %d\n" 574 "vsync end : %d\n" 575 "vtotal : %d\n", 576 adjusted_mode->crtc_clock, 577 adjusted_mode->crtc_hdisplay, 578 adjusted_mode->crtc_hblank_start, 579 adjusted_mode->crtc_hblank_end, 580 adjusted_mode->crtc_hsync_start, 581 adjusted_mode->crtc_hsync_end, 582 adjusted_mode->crtc_htotal, 583 adjusted_mode->crtc_hskew, 584 adjusted_mode->crtc_vdisplay, 585 adjusted_mode->crtc_vblank_start, 586 adjusted_mode->crtc_vblank_end, 587 adjusted_mode->crtc_vsync_start, 588 adjusted_mode->crtc_vsync_end, 589 adjusted_mode->crtc_vtotal); 590 591 if (mode->hdisplay == 640 && mode->vdisplay == 480) 592 mode_idx = MODE_640x480; 593 else if (mode->hdisplay == 800 && mode->vdisplay == 600) 594 mode_idx = MODE_800x600; 595 else if (mode->hdisplay == 1024 && mode->vdisplay == 768) 596 mode_idx = MODE_1024x768; 597 else 598 return; 599 600 /* Hopefully doing it every time won't hurt... */ 601 for (i = 0; i < ARRAY_SIZE(regs_init); i++) 602 ns2501_writeb(dvo, regs_init[i].offset, regs_init[i].value); 603 604 /* Write the mode-agnostic values */ 605 for (i = 0; i < ARRAY_SIZE(mode_agnostic_values); i++) 606 ns2501_writeb(dvo, mode_agnostic_values[i].offset, 607 mode_agnostic_values[i].value); 608 609 /* Write now the mode-specific configuration */ 610 conf = ns2501_modes + mode_idx; 611 ns->conf = conf; 612 613 ns2501_writeb(dvo, NS2501_REG8, conf->conf); 614 ns2501_writeb(dvo, NS2501_REG1B, conf->pll_a); 615 ns2501_writeb(dvo, NS2501_REG1C, conf->pll_b & 0xff); 616 ns2501_writeb(dvo, NS2501_REG1D, conf->pll_b >> 8); 617 ns2501_writeb(dvo, NS2501_REGC1, conf->hstart & 0xff); 618 ns2501_writeb(dvo, NS2501_REGC2, conf->hstart >> 8); 619 ns2501_writeb(dvo, NS2501_REGC3, conf->hstop & 0xff); 620 ns2501_writeb(dvo, NS2501_REGC4, conf->hstop >> 8); 621 ns2501_writeb(dvo, NS2501_REGC5, conf->vstart & 0xff); 622 ns2501_writeb(dvo, NS2501_REGC6, conf->vstart >> 8); 623 ns2501_writeb(dvo, NS2501_REGC7, conf->vstop & 0xff); 624 ns2501_writeb(dvo, NS2501_REGC8, conf->vstop >> 8); 625 ns2501_writeb(dvo, NS2501_REG80, conf->vsync & 0xff); 626 ns2501_writeb(dvo, NS2501_REG81, conf->vsync >> 8); 627 ns2501_writeb(dvo, NS2501_REG82, conf->vtotal & 0xff); 628 ns2501_writeb(dvo, NS2501_REG83, conf->vtotal >> 8); 629 ns2501_writeb(dvo, NS2501_REG98, conf->hpos & 0xff); 630 ns2501_writeb(dvo, NS2501_REG99, conf->hpos >> 8); 631 ns2501_writeb(dvo, NS2501_REG8E, conf->vpos & 0xff); 632 ns2501_writeb(dvo, NS2501_REG8F, conf->vpos >> 8); 633 ns2501_writeb(dvo, NS2501_REG9C, conf->voffs & 0xff); 634 ns2501_writeb(dvo, NS2501_REG9D, conf->voffs >> 8); 635 ns2501_writeb(dvo, NS2501_REGB8, conf->hscale & 0xff); 636 ns2501_writeb(dvo, NS2501_REGB9, conf->hscale >> 8); 637 ns2501_writeb(dvo, NS2501_REG10, conf->vscale & 0xff); 638 ns2501_writeb(dvo, NS2501_REG11, conf->vscale >> 8); 639 ns2501_writeb(dvo, NS2501_REGF9, conf->dither); 640 ns2501_writeb(dvo, NS2501_REG41, conf->syncb); 641 ns2501_writeb(dvo, NS2501_REGC0, conf->sync); 642 } 643 644 /* set the NS2501 power state */ 645 static bool ns2501_get_hw_state(struct intel_dvo_device *dvo) 646 { 647 unsigned char ch; 648 649 if (!ns2501_readb(dvo, NS2501_REG8, &ch)) 650 return false; 651 652 return ch & NS2501_8_PD; 653 } 654 655 /* set the NS2501 power state */ 656 static void ns2501_dpms(struct intel_dvo_device *dvo, bool enable) 657 { 658 struct ns2501_priv *ns = (struct ns2501_priv *)(dvo->dev_priv); 659 660 DRM_DEBUG_KMS("Trying set the dpms of the DVO to %i\n", enable); 661 662 if (enable) { 663 ns2501_writeb(dvo, NS2501_REGC0, ns->conf->sync | 0x08); 664 665 ns2501_writeb(dvo, NS2501_REG41, ns->conf->syncb); 666 667 ns2501_writeb(dvo, NS2501_REG34, NS2501_34_ENABLE_OUTPUT); 668 msleep(15); 669 670 ns2501_writeb(dvo, NS2501_REG8, 671 ns->conf->conf | NS2501_8_BPAS); 672 if (!(ns->conf->conf & NS2501_8_BPAS)) 673 ns2501_writeb(dvo, NS2501_REG8, ns->conf->conf); 674 msleep(200); 675 676 ns2501_writeb(dvo, NS2501_REG34, 677 NS2501_34_ENABLE_OUTPUT | NS2501_34_ENABLE_BACKLIGHT); 678 679 ns2501_writeb(dvo, NS2501_REGC0, ns->conf->sync); 680 } else { 681 ns2501_writeb(dvo, NS2501_REG34, NS2501_34_ENABLE_OUTPUT); 682 msleep(200); 683 684 ns2501_writeb(dvo, NS2501_REG8, NS2501_8_VEN | NS2501_8_HEN | 685 NS2501_8_BPAS); 686 msleep(15); 687 688 ns2501_writeb(dvo, NS2501_REG34, 0x00); 689 } 690 } 691 692 static void ns2501_destroy(struct intel_dvo_device *dvo) 693 { 694 struct ns2501_priv *ns = dvo->dev_priv; 695 696 if (ns) { 697 kfree(ns); 698 dvo->dev_priv = NULL; 699 } 700 } 701 702 const struct intel_dvo_dev_ops ns2501_ops = { 703 .init = ns2501_init, 704 .detect = ns2501_detect, 705 .mode_valid = ns2501_mode_valid, 706 .mode_set = ns2501_mode_set, 707 .dpms = ns2501_dpms, 708 .get_hw_state = ns2501_get_hw_state, 709 .destroy = ns2501_destroy, 710 }; 711