tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright 1998-2008 VIA Technologies, Inc. All Rights Reserved.
3 * Copyright 2001-2008 S3 Graphics, Inc. All Rights Reserved.
4
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public
7 * License as published by the Free Software Foundation;
8 * either version 2, or (at your option) any later version.
9
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTIES OR REPRESENTATIONS; without even
12 * the implied warranty of MERCHANTABILITY or FITNESS FOR
13 * A PARTICULAR PURPOSE.See the GNU General Public License
14 * for more details.
15
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc.,
19 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 */
21#include <linux/via-core.h>
22#include <linux/via_i2c.h>
23#include "global.h"
24
25#define viafb_compact_res(x, y) (((x)<<16)|(y))
26
27/* CLE266 Software Power Sequence */
28/* {Mask}, {Data}, {Delay} */
29static const int PowerSequenceOn[3][3] = {
30 {0x10, 0x08, 0x06}, {0x10, 0x08, 0x06}, {0x19, 0x1FE, 0x01}
31};
32static const int PowerSequenceOff[3][3] = {
33 {0x06, 0x08, 0x10}, {0x00, 0x00, 0x00}, {0xD2, 0x19, 0x01}
34};
35
36static struct _lcd_scaling_factor lcd_scaling_factor = {
37 /* LCD Horizontal Scaling Factor Register */
38 {LCD_HOR_SCALING_FACTOR_REG_NUM,
39 {{CR9F, 0, 1}, {CR77, 0, 7}, {CR79, 4, 5} } },
40 /* LCD Vertical Scaling Factor Register */
41 {LCD_VER_SCALING_FACTOR_REG_NUM,
42 {{CR79, 3, 3}, {CR78, 0, 7}, {CR79, 6, 7} } }
43};
44static struct _lcd_scaling_factor lcd_scaling_factor_CLE = {
45 /* LCD Horizontal Scaling Factor Register */
46 {LCD_HOR_SCALING_FACTOR_REG_NUM_CLE, {{CR77, 0, 7}, {CR79, 4, 5} } },
47 /* LCD Vertical Scaling Factor Register */
48 {LCD_VER_SCALING_FACTOR_REG_NUM_CLE, {{CR78, 0, 7}, {CR79, 6, 7} } }
49};
50
51static bool lvds_identify_integratedlvds(void);
52static void __devinit fp_id_to_vindex(int panel_id);
53static int lvds_register_read(int index);
54static void load_lcd_scaling(int set_hres, int set_vres, int panel_hres,
55 int panel_vres);
56static void via_pitch_alignment_patch_lcd(
57 struct lvds_setting_information *plvds_setting_info,
58 struct lvds_chip_information
59 *plvds_chip_info);
60static void lcd_patch_skew_dvp0(struct lvds_setting_information
61 *plvds_setting_info,
62 struct lvds_chip_information *plvds_chip_info);
63static void lcd_patch_skew_dvp1(struct lvds_setting_information
64 *plvds_setting_info,
65 struct lvds_chip_information *plvds_chip_info);
66static void lcd_patch_skew(struct lvds_setting_information
67 *plvds_setting_info, struct lvds_chip_information *plvds_chip_info);
68
69static void integrated_lvds_disable(struct lvds_setting_information
70 *plvds_setting_info,
71 struct lvds_chip_information *plvds_chip_info);
72static void integrated_lvds_enable(struct lvds_setting_information
73 *plvds_setting_info,
74 struct lvds_chip_information *plvds_chip_info);
75static void lcd_powersequence_off(void);
76static void lcd_powersequence_on(void);
77static void fill_lcd_format(void);
78static void check_diport_of_integrated_lvds(
79 struct lvds_chip_information *plvds_chip_info,
80 struct lvds_setting_information
81 *plvds_setting_info);
82static struct display_timing lcd_centering_timging(struct display_timing
83 mode_crt_reg,
84 struct display_timing panel_crt_reg);
85
86static inline bool check_lvds_chip(int device_id_subaddr, int device_id)
87{
88 return lvds_register_read(device_id_subaddr) == device_id;
89}
90
91void __devinit viafb_init_lcd_size(void)
92{
93 DEBUG_MSG(KERN_INFO "viafb_init_lcd_size()\n");
94
95 fp_id_to_vindex(viafb_lcd_panel_id);
96 viaparinfo->lvds_setting_info2->lcd_panel_hres =
97 viaparinfo->lvds_setting_info->lcd_panel_hres;
98 viaparinfo->lvds_setting_info2->lcd_panel_vres =
99 viaparinfo->lvds_setting_info->lcd_panel_vres;
100 viaparinfo->lvds_setting_info2->device_lcd_dualedge =
101 viaparinfo->lvds_setting_info->device_lcd_dualedge;
102 viaparinfo->lvds_setting_info2->LCDDithering =
103 viaparinfo->lvds_setting_info->LCDDithering;
104}
105
106static bool lvds_identify_integratedlvds(void)
107{
108 if (viafb_display_hardware_layout == HW_LAYOUT_LCD_EXTERNAL_LCD2) {
109 /* Two dual channel LCD (Internal LVDS + External LVDS): */
110 /* If we have an external LVDS, such as VT1636, we should
111 have its chip ID already. */
112 if (viaparinfo->chip_info->lvds_chip_info.lvds_chip_name) {
113 viaparinfo->chip_info->lvds_chip_info2.lvds_chip_name =
114 INTEGRATED_LVDS;
115 DEBUG_MSG(KERN_INFO "Support two dual channel LVDS! "
116 "(Internal LVDS + External LVDS)\n");
117 } else {
118 viaparinfo->chip_info->lvds_chip_info.lvds_chip_name =
119 INTEGRATED_LVDS;
120 DEBUG_MSG(KERN_INFO "Not found external LVDS, "
121 "so can't support two dual channel LVDS!\n");
122 }
123 } else if (viafb_display_hardware_layout == HW_LAYOUT_LCD1_LCD2) {
124 /* Two single channel LCD (Internal LVDS + Internal LVDS): */
125 viaparinfo->chip_info->lvds_chip_info.lvds_chip_name =
126 INTEGRATED_LVDS;
127 viaparinfo->chip_info->lvds_chip_info2.lvds_chip_name =
128 INTEGRATED_LVDS;
129 DEBUG_MSG(KERN_INFO "Support two single channel LVDS! "
130 "(Internal LVDS + Internal LVDS)\n");
131 } else if (viafb_display_hardware_layout != HW_LAYOUT_DVI_ONLY) {
132 /* If we have found external LVDS, just use it,
133 otherwise, we will use internal LVDS as default. */
134 if (!viaparinfo->chip_info->lvds_chip_info.lvds_chip_name) {
135 viaparinfo->chip_info->lvds_chip_info.lvds_chip_name =
136 INTEGRATED_LVDS;
137 DEBUG_MSG(KERN_INFO "Found Integrated LVDS!\n");
138 }
139 } else {
140 viaparinfo->chip_info->lvds_chip_info.lvds_chip_name =
141 NON_LVDS_TRANSMITTER;
142 DEBUG_MSG(KERN_INFO "Do not support LVDS!\n");
143 return false;
144 }
145
146 return true;
147}
148
149bool __devinit viafb_lvds_trasmitter_identify(void)
150{
151 if (viafb_lvds_identify_vt1636(VIA_PORT_31)) {
152 viaparinfo->chip_info->lvds_chip_info.i2c_port = VIA_PORT_31;
153 DEBUG_MSG(KERN_INFO
154 "Found VIA VT1636 LVDS on port i2c 0x31\n");
155 } else {
156 if (viafb_lvds_identify_vt1636(VIA_PORT_2C)) {
157 viaparinfo->chip_info->lvds_chip_info.i2c_port =
158 VIA_PORT_2C;
159 DEBUG_MSG(KERN_INFO
160 "Found VIA VT1636 LVDS on port gpio 0x2c\n");
161 }
162 }
163
164 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CX700)
165 lvds_identify_integratedlvds();
166
167 if (viaparinfo->chip_info->lvds_chip_info.lvds_chip_name)
168 return true;
169 /* Check for VT1631: */
170 viaparinfo->chip_info->lvds_chip_info.lvds_chip_name = VT1631_LVDS;
171 viaparinfo->chip_info->lvds_chip_info.lvds_chip_slave_addr =
172 VT1631_LVDS_I2C_ADDR;
173
174 if (check_lvds_chip(VT1631_DEVICE_ID_REG, VT1631_DEVICE_ID)) {
175 DEBUG_MSG(KERN_INFO "\n VT1631 LVDS ! \n");
176 DEBUG_MSG(KERN_INFO "\n %2d",
177 viaparinfo->chip_info->lvds_chip_info.lvds_chip_name);
178 DEBUG_MSG(KERN_INFO "\n %2d",
179 viaparinfo->chip_info->lvds_chip_info.lvds_chip_name);
180 return true;
181 }
182
183 viaparinfo->chip_info->lvds_chip_info.lvds_chip_name =
184 NON_LVDS_TRANSMITTER;
185 viaparinfo->chip_info->lvds_chip_info.lvds_chip_slave_addr =
186 VT1631_LVDS_I2C_ADDR;
187 return false;
188}
189
190static void __devinit fp_id_to_vindex(int panel_id)
191{
192 DEBUG_MSG(KERN_INFO "fp_get_panel_id()\n");
193
194 if (panel_id > LCD_PANEL_ID_MAXIMUM)
195 viafb_lcd_panel_id = panel_id =
196 viafb_read_reg(VIACR, CR3F) & 0x0F;
197
198 switch (panel_id) {
199 case 0x0:
200 viaparinfo->lvds_setting_info->lcd_panel_hres = 640;
201 viaparinfo->lvds_setting_info->lcd_panel_vres = 480;
202 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
203 viaparinfo->lvds_setting_info->LCDDithering = 1;
204 break;
205 case 0x1:
206 viaparinfo->lvds_setting_info->lcd_panel_hres = 800;
207 viaparinfo->lvds_setting_info->lcd_panel_vres = 600;
208 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
209 viaparinfo->lvds_setting_info->LCDDithering = 1;
210 break;
211 case 0x2:
212 viaparinfo->lvds_setting_info->lcd_panel_hres = 1024;
213 viaparinfo->lvds_setting_info->lcd_panel_vres = 768;
214 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
215 viaparinfo->lvds_setting_info->LCDDithering = 1;
216 break;
217 case 0x3:
218 viaparinfo->lvds_setting_info->lcd_panel_hres = 1280;
219 viaparinfo->lvds_setting_info->lcd_panel_vres = 768;
220 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
221 viaparinfo->lvds_setting_info->LCDDithering = 1;
222 break;
223 case 0x4:
224 viaparinfo->lvds_setting_info->lcd_panel_hres = 1280;
225 viaparinfo->lvds_setting_info->lcd_panel_vres = 1024;
226 viaparinfo->lvds_setting_info->device_lcd_dualedge = 1;
227 viaparinfo->lvds_setting_info->LCDDithering = 1;
228 break;
229 case 0x5:
230 viaparinfo->lvds_setting_info->lcd_panel_hres = 1400;
231 viaparinfo->lvds_setting_info->lcd_panel_vres = 1050;
232 viaparinfo->lvds_setting_info->device_lcd_dualedge = 1;
233 viaparinfo->lvds_setting_info->LCDDithering = 1;
234 break;
235 case 0x6:
236 viaparinfo->lvds_setting_info->lcd_panel_hres = 1600;
237 viaparinfo->lvds_setting_info->lcd_panel_vres = 1200;
238 viaparinfo->lvds_setting_info->device_lcd_dualedge = 1;
239 viaparinfo->lvds_setting_info->LCDDithering = 1;
240 break;
241 case 0x8:
242 viaparinfo->lvds_setting_info->lcd_panel_hres = 800;
243 viaparinfo->lvds_setting_info->lcd_panel_vres = 480;
244 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
245 viaparinfo->lvds_setting_info->LCDDithering = 1;
246 break;
247 case 0x9:
248 viaparinfo->lvds_setting_info->lcd_panel_hres = 1024;
249 viaparinfo->lvds_setting_info->lcd_panel_vres = 768;
250 viaparinfo->lvds_setting_info->device_lcd_dualedge = 1;
251 viaparinfo->lvds_setting_info->LCDDithering = 1;
252 break;
253 case 0xA:
254 viaparinfo->lvds_setting_info->lcd_panel_hres = 1024;
255 viaparinfo->lvds_setting_info->lcd_panel_vres = 768;
256 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
257 viaparinfo->lvds_setting_info->LCDDithering = 0;
258 break;
259 case 0xB:
260 viaparinfo->lvds_setting_info->lcd_panel_hres = 1024;
261 viaparinfo->lvds_setting_info->lcd_panel_vres = 768;
262 viaparinfo->lvds_setting_info->device_lcd_dualedge = 1;
263 viaparinfo->lvds_setting_info->LCDDithering = 0;
264 break;
265 case 0xC:
266 viaparinfo->lvds_setting_info->lcd_panel_hres = 1280;
267 viaparinfo->lvds_setting_info->lcd_panel_vres = 768;
268 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
269 viaparinfo->lvds_setting_info->LCDDithering = 0;
270 break;
271 case 0xD:
272 viaparinfo->lvds_setting_info->lcd_panel_hres = 1280;
273 viaparinfo->lvds_setting_info->lcd_panel_vres = 1024;
274 viaparinfo->lvds_setting_info->device_lcd_dualedge = 1;
275 viaparinfo->lvds_setting_info->LCDDithering = 0;
276 break;
277 case 0xE:
278 viaparinfo->lvds_setting_info->lcd_panel_hres = 1400;
279 viaparinfo->lvds_setting_info->lcd_panel_vres = 1050;
280 viaparinfo->lvds_setting_info->device_lcd_dualedge = 1;
281 viaparinfo->lvds_setting_info->LCDDithering = 0;
282 break;
283 case 0xF:
284 viaparinfo->lvds_setting_info->lcd_panel_hres = 1600;
285 viaparinfo->lvds_setting_info->lcd_panel_vres = 1200;
286 viaparinfo->lvds_setting_info->device_lcd_dualedge = 1;
287 viaparinfo->lvds_setting_info->LCDDithering = 0;
288 break;
289 case 0x10:
290 viaparinfo->lvds_setting_info->lcd_panel_hres = 1366;
291 viaparinfo->lvds_setting_info->lcd_panel_vres = 768;
292 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
293 viaparinfo->lvds_setting_info->LCDDithering = 0;
294 break;
295 case 0x11:
296 viaparinfo->lvds_setting_info->lcd_panel_hres = 1024;
297 viaparinfo->lvds_setting_info->lcd_panel_vres = 600;
298 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
299 viaparinfo->lvds_setting_info->LCDDithering = 1;
300 break;
301 case 0x12:
302 viaparinfo->lvds_setting_info->lcd_panel_hres = 1280;
303 viaparinfo->lvds_setting_info->lcd_panel_vres = 768;
304 viaparinfo->lvds_setting_info->device_lcd_dualedge = 1;
305 viaparinfo->lvds_setting_info->LCDDithering = 1;
306 break;
307 case 0x13:
308 viaparinfo->lvds_setting_info->lcd_panel_hres = 1280;
309 viaparinfo->lvds_setting_info->lcd_panel_vres = 800;
310 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
311 viaparinfo->lvds_setting_info->LCDDithering = 1;
312 break;
313 case 0x14:
314 viaparinfo->lvds_setting_info->lcd_panel_hres = 1360;
315 viaparinfo->lvds_setting_info->lcd_panel_vres = 768;
316 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
317 viaparinfo->lvds_setting_info->LCDDithering = 0;
318 break;
319 case 0x15:
320 viaparinfo->lvds_setting_info->lcd_panel_hres = 1280;
321 viaparinfo->lvds_setting_info->lcd_panel_vres = 768;
322 viaparinfo->lvds_setting_info->device_lcd_dualedge = 1;
323 viaparinfo->lvds_setting_info->LCDDithering = 0;
324 break;
325 case 0x16:
326 viaparinfo->lvds_setting_info->lcd_panel_hres = 480;
327 viaparinfo->lvds_setting_info->lcd_panel_vres = 640;
328 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
329 viaparinfo->lvds_setting_info->LCDDithering = 1;
330 break;
331 case 0x17:
332 /* OLPC XO-1.5 panel */
333 viaparinfo->lvds_setting_info->lcd_panel_hres = 1200;
334 viaparinfo->lvds_setting_info->lcd_panel_vres = 900;
335 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
336 viaparinfo->lvds_setting_info->LCDDithering = 0;
337 break;
338 default:
339 viaparinfo->lvds_setting_info->lcd_panel_hres = 800;
340 viaparinfo->lvds_setting_info->lcd_panel_vres = 600;
341 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
342 viaparinfo->lvds_setting_info->LCDDithering = 1;
343 }
344}
345
346static int lvds_register_read(int index)
347{
348 u8 data;
349
350 viafb_i2c_readbyte(VIA_PORT_2C,
351 (u8) viaparinfo->chip_info->lvds_chip_info.lvds_chip_slave_addr,
352 (u8) index, &data);
353 return data;
354}
355
356static void load_lcd_scaling(int set_hres, int set_vres, int panel_hres,
357 int panel_vres)
358{
359 int reg_value = 0;
360 int viafb_load_reg_num;
361 struct io_register *reg = NULL;
362
363 DEBUG_MSG(KERN_INFO "load_lcd_scaling()!!\n");
364
365 /* LCD Scaling Enable */
366 viafb_write_reg_mask(CR79, VIACR, 0x07, BIT0 + BIT1 + BIT2);
367
368 /* Check if expansion for horizontal */
369 if (set_hres < panel_hres) {
370 /* Load Horizontal Scaling Factor */
371 switch (viaparinfo->chip_info->gfx_chip_name) {
372 case UNICHROME_CLE266:
373 case UNICHROME_K400:
374 reg_value =
375 CLE266_LCD_HOR_SCF_FORMULA(set_hres, panel_hres);
376 viafb_load_reg_num =
377 lcd_scaling_factor_CLE.lcd_hor_scaling_factor.
378 reg_num;
379 reg = lcd_scaling_factor_CLE.lcd_hor_scaling_factor.reg;
380 viafb_load_reg(reg_value,
381 viafb_load_reg_num, reg, VIACR);
382 break;
383 case UNICHROME_K800:
384 case UNICHROME_PM800:
385 case UNICHROME_CN700:
386 case UNICHROME_CX700:
387 case UNICHROME_K8M890:
388 case UNICHROME_P4M890:
389 case UNICHROME_P4M900:
390 case UNICHROME_CN750:
391 case UNICHROME_VX800:
392 case UNICHROME_VX855:
393 case UNICHROME_VX900:
394 reg_value =
395 K800_LCD_HOR_SCF_FORMULA(set_hres, panel_hres);
396 /* Horizontal scaling enabled */
397 viafb_write_reg_mask(CRA2, VIACR, 0xC0, BIT7 + BIT6);
398 viafb_load_reg_num =
399 lcd_scaling_factor.lcd_hor_scaling_factor.reg_num;
400 reg = lcd_scaling_factor.lcd_hor_scaling_factor.reg;
401 viafb_load_reg(reg_value,
402 viafb_load_reg_num, reg, VIACR);
403 break;
404 }
405
406 DEBUG_MSG(KERN_INFO "Horizontal Scaling value = %d", reg_value);
407 } else {
408 /* Horizontal scaling disabled */
409 viafb_write_reg_mask(CRA2, VIACR, 0x00, BIT7);
410 }
411
412 /* Check if expansion for vertical */
413 if (set_vres < panel_vres) {
414 /* Load Vertical Scaling Factor */
415 switch (viaparinfo->chip_info->gfx_chip_name) {
416 case UNICHROME_CLE266:
417 case UNICHROME_K400:
418 reg_value =
419 CLE266_LCD_VER_SCF_FORMULA(set_vres, panel_vres);
420 viafb_load_reg_num =
421 lcd_scaling_factor_CLE.lcd_ver_scaling_factor.
422 reg_num;
423 reg = lcd_scaling_factor_CLE.lcd_ver_scaling_factor.reg;
424 viafb_load_reg(reg_value,
425 viafb_load_reg_num, reg, VIACR);
426 break;
427 case UNICHROME_K800:
428 case UNICHROME_PM800:
429 case UNICHROME_CN700:
430 case UNICHROME_CX700:
431 case UNICHROME_K8M890:
432 case UNICHROME_P4M890:
433 case UNICHROME_P4M900:
434 case UNICHROME_CN750:
435 case UNICHROME_VX800:
436 case UNICHROME_VX855:
437 case UNICHROME_VX900:
438 reg_value =
439 K800_LCD_VER_SCF_FORMULA(set_vres, panel_vres);
440 /* Vertical scaling enabled */
441 viafb_write_reg_mask(CRA2, VIACR, 0x08, BIT3);
442 viafb_load_reg_num =
443 lcd_scaling_factor.lcd_ver_scaling_factor.reg_num;
444 reg = lcd_scaling_factor.lcd_ver_scaling_factor.reg;
445 viafb_load_reg(reg_value,
446 viafb_load_reg_num, reg, VIACR);
447 break;
448 }
449
450 DEBUG_MSG(KERN_INFO "Vertical Scaling value = %d", reg_value);
451 } else {
452 /* Vertical scaling disabled */
453 viafb_write_reg_mask(CRA2, VIACR, 0x00, BIT3);
454 }
455}
456
457static void via_pitch_alignment_patch_lcd(
458 struct lvds_setting_information *plvds_setting_info,
459 struct lvds_chip_information
460 *plvds_chip_info)
461{
462 unsigned char cr13, cr35, cr65, cr66, cr67;
463 unsigned long dwScreenPitch = 0;
464 unsigned long dwPitch;
465
466 dwPitch = plvds_setting_info->h_active * (plvds_setting_info->bpp >> 3);
467 if (dwPitch & 0x1F) {
468 dwScreenPitch = ((dwPitch + 31) & ~31) >> 3;
469 if (plvds_setting_info->iga_path == IGA2) {
470 if (plvds_setting_info->bpp > 8) {
471 cr66 = (unsigned char)(dwScreenPitch & 0xFF);
472 viafb_write_reg(CR66, VIACR, cr66);
473 cr67 = viafb_read_reg(VIACR, CR67) & 0xFC;
474 cr67 |=
475 (unsigned
476 char)((dwScreenPitch & 0x300) >> 8);
477 viafb_write_reg(CR67, VIACR, cr67);
478 }
479
480 /* Fetch Count */
481 cr67 = viafb_read_reg(VIACR, CR67) & 0xF3;
482 cr67 |= (unsigned char)((dwScreenPitch & 0x600) >> 7);
483 viafb_write_reg(CR67, VIACR, cr67);
484 cr65 = (unsigned char)((dwScreenPitch >> 1) & 0xFF);
485 cr65 += 2;
486 viafb_write_reg(CR65, VIACR, cr65);
487 } else {
488 if (plvds_setting_info->bpp > 8) {
489 cr13 = (unsigned char)(dwScreenPitch & 0xFF);
490 viafb_write_reg(CR13, VIACR, cr13);
491 cr35 = viafb_read_reg(VIACR, CR35) & 0x1F;
492 cr35 |=
493 (unsigned
494 char)((dwScreenPitch & 0x700) >> 3);
495 viafb_write_reg(CR35, VIACR, cr35);
496 }
497 }
498 }
499}
500static void lcd_patch_skew_dvp0(struct lvds_setting_information
501 *plvds_setting_info,
502 struct lvds_chip_information *plvds_chip_info)
503{
504 if (VT1636_LVDS == plvds_chip_info->lvds_chip_name) {
505 switch (viaparinfo->chip_info->gfx_chip_name) {
506 case UNICHROME_P4M900:
507 viafb_vt1636_patch_skew_on_vt3364(plvds_setting_info,
508 plvds_chip_info);
509 break;
510 case UNICHROME_P4M890:
511 viafb_vt1636_patch_skew_on_vt3327(plvds_setting_info,
512 plvds_chip_info);
513 break;
514 }
515 }
516}
517static void lcd_patch_skew_dvp1(struct lvds_setting_information
518 *plvds_setting_info,
519 struct lvds_chip_information *plvds_chip_info)
520{
521 if (VT1636_LVDS == plvds_chip_info->lvds_chip_name) {
522 switch (viaparinfo->chip_info->gfx_chip_name) {
523 case UNICHROME_CX700:
524 viafb_vt1636_patch_skew_on_vt3324(plvds_setting_info,
525 plvds_chip_info);
526 break;
527 }
528 }
529}
530static void lcd_patch_skew(struct lvds_setting_information
531 *plvds_setting_info, struct lvds_chip_information *plvds_chip_info)
532{
533 DEBUG_MSG(KERN_INFO "lcd_patch_skew\n");
534 switch (plvds_chip_info->output_interface) {
535 case INTERFACE_DVP0:
536 lcd_patch_skew_dvp0(plvds_setting_info, plvds_chip_info);
537 break;
538 case INTERFACE_DVP1:
539 lcd_patch_skew_dvp1(plvds_setting_info, plvds_chip_info);
540 break;
541 case INTERFACE_DFP_LOW:
542 if (UNICHROME_P4M900 == viaparinfo->chip_info->gfx_chip_name) {
543 viafb_write_reg_mask(CR99, VIACR, 0x08,
544 BIT0 + BIT1 + BIT2 + BIT3);
545 }
546 break;
547 }
548}
549
550/* LCD Set Mode */
551void viafb_lcd_set_mode(struct lvds_setting_information *plvds_setting_info,
552 struct lvds_chip_information *plvds_chip_info)
553{
554 int set_iga = plvds_setting_info->iga_path;
555 int mode_bpp = plvds_setting_info->bpp;
556 int set_hres = plvds_setting_info->h_active;
557 int set_vres = plvds_setting_info->v_active;
558 int panel_hres = plvds_setting_info->lcd_panel_hres;
559 int panel_vres = plvds_setting_info->lcd_panel_vres;
560 u32 clock;
561 struct display_timing mode_crt_reg, panel_crt_reg, timing;
562 struct crt_mode_table *mode_crt_table, *panel_crt_table;
563
564 DEBUG_MSG(KERN_INFO "viafb_lcd_set_mode!!\n");
565 /* Get mode table */
566 mode_crt_table = viafb_get_best_mode(set_hres, set_vres, 60);
567 mode_crt_reg = mode_crt_table->crtc;
568 /* Get panel table Pointer */
569 panel_crt_table = viafb_get_best_mode(panel_hres, panel_vres, 60);
570 panel_crt_reg = panel_crt_table->crtc;
571 DEBUG_MSG(KERN_INFO "bellow viafb_lcd_set_mode!!\n");
572 if (VT1636_LVDS == plvds_chip_info->lvds_chip_name)
573 viafb_init_lvds_vt1636(plvds_setting_info, plvds_chip_info);
574 clock = panel_crt_reg.hor_total * panel_crt_reg.ver_total
575 * panel_crt_table->refresh_rate;
576 plvds_setting_info->vclk = clock;
577
578 if (set_iga == IGA2 && (set_hres < panel_hres || set_vres < panel_vres)
579 && plvds_setting_info->display_method == LCD_EXPANDSION) {
580 timing = panel_crt_reg;
581 load_lcd_scaling(set_hres, set_vres, panel_hres, panel_vres);
582 } else {
583 timing = lcd_centering_timging(mode_crt_reg, panel_crt_reg);
584 if (set_iga == IGA2)
585 /* disable scaling */
586 via_write_reg_mask(VIACR, 0x79, 0x00,
587 BIT0 + BIT1 + BIT2);
588 }
589
590 timing.hor_blank_end += timing.hor_blank_start;
591 timing.hor_sync_end += timing.hor_sync_start;
592 timing.ver_blank_end += timing.ver_blank_start;
593 timing.ver_sync_end += timing.ver_sync_start;
594 if (set_iga == IGA1)
595 via_set_primary_timing(&timing);
596 else if (set_iga == IGA2)
597 via_set_secondary_timing(&timing);
598
599 /* Fetch count for IGA2 only */
600 viafb_load_fetch_count_reg(set_hres, mode_bpp / 8, set_iga);
601
602 if ((viaparinfo->chip_info->gfx_chip_name != UNICHROME_CLE266)
603 && (viaparinfo->chip_info->gfx_chip_name != UNICHROME_K400))
604 viafb_load_FIFO_reg(set_iga, set_hres, set_vres);
605
606 fill_lcd_format();
607 viafb_set_vclock(clock, set_iga);
608 lcd_patch_skew(plvds_setting_info, plvds_chip_info);
609
610 /* If K8M800, enable LCD Prefetch Mode. */
611 if ((viaparinfo->chip_info->gfx_chip_name == UNICHROME_K800)
612 || (UNICHROME_K8M890 == viaparinfo->chip_info->gfx_chip_name))
613 viafb_write_reg_mask(CR6A, VIACR, 0x01, BIT0);
614
615 /* Patch for non 32bit alignment mode */
616 via_pitch_alignment_patch_lcd(plvds_setting_info, plvds_chip_info);
617}
618
619static void integrated_lvds_disable(struct lvds_setting_information
620 *plvds_setting_info,
621 struct lvds_chip_information *plvds_chip_info)
622{
623 bool turn_off_first_powersequence = false;
624 bool turn_off_second_powersequence = false;
625 if (INTERFACE_LVDS0LVDS1 == plvds_chip_info->output_interface)
626 turn_off_first_powersequence = true;
627 if (INTERFACE_LVDS0 == plvds_chip_info->output_interface)
628 turn_off_first_powersequence = true;
629 if (INTERFACE_LVDS1 == plvds_chip_info->output_interface)
630 turn_off_second_powersequence = true;
631 if (turn_off_second_powersequence) {
632 /* Use second power sequence control: */
633
634 /* Turn off power sequence. */
635 viafb_write_reg_mask(CRD4, VIACR, 0, BIT1);
636
637 /* Turn off back light. */
638 viafb_write_reg_mask(CRD3, VIACR, 0xC0, BIT6 + BIT7);
639 }
640 if (turn_off_first_powersequence) {
641 /* Use first power sequence control: */
642
643 /* Turn off power sequence. */
644 viafb_write_reg_mask(CR6A, VIACR, 0, BIT3);
645
646 /* Turn off back light. */
647 viafb_write_reg_mask(CR91, VIACR, 0xC0, BIT6 + BIT7);
648 }
649
650 /* Power off LVDS channel. */
651 switch (plvds_chip_info->output_interface) {
652 case INTERFACE_LVDS0:
653 {
654 viafb_write_reg_mask(CRD2, VIACR, 0x80, BIT7);
655 break;
656 }
657
658 case INTERFACE_LVDS1:
659 {
660 viafb_write_reg_mask(CRD2, VIACR, 0x40, BIT6);
661 break;
662 }
663
664 case INTERFACE_LVDS0LVDS1:
665 {
666 viafb_write_reg_mask(CRD2, VIACR, 0xC0, BIT6 + BIT7);
667 break;
668 }
669 }
670}
671
672static void integrated_lvds_enable(struct lvds_setting_information
673 *plvds_setting_info,
674 struct lvds_chip_information *plvds_chip_info)
675{
676 DEBUG_MSG(KERN_INFO "integrated_lvds_enable, out_interface:%d\n",
677 plvds_chip_info->output_interface);
678 if (plvds_setting_info->lcd_mode == LCD_SPWG)
679 viafb_write_reg_mask(CRD2, VIACR, 0x00, BIT0 + BIT1);
680 else
681 viafb_write_reg_mask(CRD2, VIACR, 0x03, BIT0 + BIT1);
682
683 switch (plvds_chip_info->output_interface) {
684 case INTERFACE_LVDS0LVDS1:
685 case INTERFACE_LVDS0:
686 /* Use first power sequence control: */
687 /* Use hardware control power sequence. */
688 viafb_write_reg_mask(CR91, VIACR, 0, BIT0);
689 /* Turn on back light. */
690 viafb_write_reg_mask(CR91, VIACR, 0, BIT6 + BIT7);
691 /* Turn on hardware power sequence. */
692 viafb_write_reg_mask(CR6A, VIACR, 0x08, BIT3);
693 break;
694 case INTERFACE_LVDS1:
695 /* Use second power sequence control: */
696 /* Use hardware control power sequence. */
697 viafb_write_reg_mask(CRD3, VIACR, 0, BIT0);
698 /* Turn on back light. */
699 viafb_write_reg_mask(CRD3, VIACR, 0, BIT6 + BIT7);
700 /* Turn on hardware power sequence. */
701 viafb_write_reg_mask(CRD4, VIACR, 0x02, BIT1);
702 break;
703 }
704
705 /* Power on LVDS channel. */
706 switch (plvds_chip_info->output_interface) {
707 case INTERFACE_LVDS0:
708 {
709 viafb_write_reg_mask(CRD2, VIACR, 0, BIT7);
710 break;
711 }
712
713 case INTERFACE_LVDS1:
714 {
715 viafb_write_reg_mask(CRD2, VIACR, 0, BIT6);
716 break;
717 }
718
719 case INTERFACE_LVDS0LVDS1:
720 {
721 viafb_write_reg_mask(CRD2, VIACR, 0, BIT6 + BIT7);
722 break;
723 }
724 }
725}
726
727void viafb_lcd_disable(void)
728{
729
730 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266) {
731 lcd_powersequence_off();
732 /* DI1 pad off */
733 viafb_write_reg_mask(SR1E, VIASR, 0x00, 0x30);
734 } else if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CX700) {
735 if (viafb_LCD2_ON
736 && (INTEGRATED_LVDS ==
737 viaparinfo->chip_info->lvds_chip_info2.lvds_chip_name))
738 integrated_lvds_disable(viaparinfo->lvds_setting_info,
739 &viaparinfo->chip_info->lvds_chip_info2);
740 if (INTEGRATED_LVDS ==
741 viaparinfo->chip_info->lvds_chip_info.lvds_chip_name)
742 integrated_lvds_disable(viaparinfo->lvds_setting_info,
743 &viaparinfo->chip_info->lvds_chip_info);
744 if (VT1636_LVDS == viaparinfo->chip_info->
745 lvds_chip_info.lvds_chip_name)
746 viafb_disable_lvds_vt1636(viaparinfo->lvds_setting_info,
747 &viaparinfo->chip_info->lvds_chip_info);
748 } else if (VT1636_LVDS ==
749 viaparinfo->chip_info->lvds_chip_info.lvds_chip_name) {
750 viafb_disable_lvds_vt1636(viaparinfo->lvds_setting_info,
751 &viaparinfo->chip_info->lvds_chip_info);
752 } else {
753 /* Backlight off */
754 viafb_write_reg_mask(SR3D, VIASR, 0x00, 0x20);
755 /* 24 bit DI data paht off */
756 viafb_write_reg_mask(CR91, VIACR, 0x80, 0x80);
757 }
758
759 /* Disable expansion bit */
760 viafb_write_reg_mask(CR79, VIACR, 0x00, 0x01);
761 /* Simultaneout disabled */
762 viafb_write_reg_mask(CR6B, VIACR, 0x00, 0x08);
763}
764
765static void set_lcd_output_path(int set_iga, int output_interface)
766{
767 switch (output_interface) {
768 case INTERFACE_DFP:
769 if ((UNICHROME_K8M890 == viaparinfo->chip_info->gfx_chip_name)
770 || (UNICHROME_P4M890 ==
771 viaparinfo->chip_info->gfx_chip_name))
772 viafb_write_reg_mask(CR97, VIACR, 0x84,
773 BIT7 + BIT2 + BIT1 + BIT0);
774 case INTERFACE_DVP0:
775 case INTERFACE_DVP1:
776 case INTERFACE_DFP_HIGH:
777 case INTERFACE_DFP_LOW:
778 if (set_iga == IGA2)
779 viafb_write_reg(CR91, VIACR, 0x00);
780 break;
781 }
782}
783
784void viafb_lcd_enable(void)
785{
786 viafb_write_reg_mask(CR6B, VIACR, 0x00, BIT3);
787 viafb_write_reg_mask(CR6A, VIACR, 0x08, BIT3);
788 set_lcd_output_path(viaparinfo->lvds_setting_info->iga_path,
789 viaparinfo->chip_info->lvds_chip_info.output_interface);
790 if (viafb_LCD2_ON)
791 set_lcd_output_path(viaparinfo->lvds_setting_info2->iga_path,
792 viaparinfo->chip_info->
793 lvds_chip_info2.output_interface);
794
795 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266) {
796 /* DI1 pad on */
797 viafb_write_reg_mask(SR1E, VIASR, 0x30, 0x30);
798 lcd_powersequence_on();
799 } else if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CX700) {
800 if (viafb_LCD2_ON && (INTEGRATED_LVDS ==
801 viaparinfo->chip_info->lvds_chip_info2.lvds_chip_name))
802 integrated_lvds_enable(viaparinfo->lvds_setting_info2, \
803 &viaparinfo->chip_info->lvds_chip_info2);
804 if (INTEGRATED_LVDS ==
805 viaparinfo->chip_info->lvds_chip_info.lvds_chip_name)
806 integrated_lvds_enable(viaparinfo->lvds_setting_info,
807 &viaparinfo->chip_info->lvds_chip_info);
808 if (VT1636_LVDS == viaparinfo->chip_info->
809 lvds_chip_info.lvds_chip_name)
810 viafb_enable_lvds_vt1636(viaparinfo->
811 lvds_setting_info, &viaparinfo->chip_info->
812 lvds_chip_info);
813 } else if (VT1636_LVDS ==
814 viaparinfo->chip_info->lvds_chip_info.lvds_chip_name) {
815 viafb_enable_lvds_vt1636(viaparinfo->lvds_setting_info,
816 &viaparinfo->chip_info->lvds_chip_info);
817 } else {
818 /* Backlight on */
819 viafb_write_reg_mask(SR3D, VIASR, 0x20, 0x20);
820 /* 24 bit DI data paht on */
821 viafb_write_reg_mask(CR91, VIACR, 0x00, 0x80);
822 /* LCD enabled */
823 viafb_write_reg_mask(CR6A, VIACR, 0x48, 0x48);
824 }
825}
826
827static void lcd_powersequence_off(void)
828{
829 int i, mask, data;
830
831 /* Software control power sequence */
832 viafb_write_reg_mask(CR91, VIACR, 0x11, 0x11);
833
834 for (i = 0; i < 3; i++) {
835 mask = PowerSequenceOff[0][i];
836 data = PowerSequenceOff[1][i] & mask;
837 viafb_write_reg_mask(CR91, VIACR, (u8) data, (u8) mask);
838 udelay(PowerSequenceOff[2][i]);
839 }
840
841 /* Disable LCD */
842 viafb_write_reg_mask(CR6A, VIACR, 0x00, 0x08);
843}
844
845static void lcd_powersequence_on(void)
846{
847 int i, mask, data;
848
849 /* Software control power sequence */
850 viafb_write_reg_mask(CR91, VIACR, 0x11, 0x11);
851
852 /* Enable LCD */
853 viafb_write_reg_mask(CR6A, VIACR, 0x08, 0x08);
854
855 for (i = 0; i < 3; i++) {
856 mask = PowerSequenceOn[0][i];
857 data = PowerSequenceOn[1][i] & mask;
858 viafb_write_reg_mask(CR91, VIACR, (u8) data, (u8) mask);
859 udelay(PowerSequenceOn[2][i]);
860 }
861
862 udelay(1);
863}
864
865static void fill_lcd_format(void)
866{
867 u8 bdithering = 0, bdual = 0;
868
869 if (viaparinfo->lvds_setting_info->device_lcd_dualedge)
870 bdual = BIT4;
871 if (viaparinfo->lvds_setting_info->LCDDithering)
872 bdithering = BIT0;
873 /* Dual & Dithering */
874 viafb_write_reg_mask(CR88, VIACR, (bdithering | bdual), BIT4 + BIT0);
875}
876
877static void check_diport_of_integrated_lvds(
878 struct lvds_chip_information *plvds_chip_info,
879 struct lvds_setting_information
880 *plvds_setting_info)
881{
882 /* Determine LCD DI Port by hardware layout. */
883 switch (viafb_display_hardware_layout) {
884 case HW_LAYOUT_LCD_ONLY:
885 {
886 if (plvds_setting_info->device_lcd_dualedge) {
887 plvds_chip_info->output_interface =
888 INTERFACE_LVDS0LVDS1;
889 } else {
890 plvds_chip_info->output_interface =
891 INTERFACE_LVDS0;
892 }
893
894 break;
895 }
896
897 case HW_LAYOUT_DVI_ONLY:
898 {
899 plvds_chip_info->output_interface = INTERFACE_NONE;
900 break;
901 }
902
903 case HW_LAYOUT_LCD1_LCD2:
904 case HW_LAYOUT_LCD_EXTERNAL_LCD2:
905 {
906 plvds_chip_info->output_interface =
907 INTERFACE_LVDS0LVDS1;
908 break;
909 }
910
911 case HW_LAYOUT_LCD_DVI:
912 {
913 plvds_chip_info->output_interface = INTERFACE_LVDS1;
914 break;
915 }
916
917 default:
918 {
919 plvds_chip_info->output_interface = INTERFACE_LVDS1;
920 break;
921 }
922 }
923
924 DEBUG_MSG(KERN_INFO
925 "Display Hardware Layout: 0x%x, LCD DI Port: 0x%x\n",
926 viafb_display_hardware_layout,
927 plvds_chip_info->output_interface);
928}
929
930void __devinit viafb_init_lvds_output_interface(struct lvds_chip_information
931 *plvds_chip_info,
932 struct lvds_setting_information
933 *plvds_setting_info)
934{
935 if (INTERFACE_NONE != plvds_chip_info->output_interface) {
936 /*Do nothing, lcd port is specified by module parameter */
937 return;
938 }
939
940 switch (plvds_chip_info->lvds_chip_name) {
941
942 case VT1636_LVDS:
943 switch (viaparinfo->chip_info->gfx_chip_name) {
944 case UNICHROME_CX700:
945 plvds_chip_info->output_interface = INTERFACE_DVP1;
946 break;
947 case UNICHROME_CN700:
948 plvds_chip_info->output_interface = INTERFACE_DFP_LOW;
949 break;
950 default:
951 plvds_chip_info->output_interface = INTERFACE_DVP0;
952 break;
953 }
954 break;
955
956 case INTEGRATED_LVDS:
957 check_diport_of_integrated_lvds(plvds_chip_info,
958 plvds_setting_info);
959 break;
960
961 default:
962 switch (viaparinfo->chip_info->gfx_chip_name) {
963 case UNICHROME_K8M890:
964 case UNICHROME_P4M900:
965 case UNICHROME_P4M890:
966 plvds_chip_info->output_interface = INTERFACE_DFP_LOW;
967 break;
968 default:
969 plvds_chip_info->output_interface = INTERFACE_DFP;
970 break;
971 }
972 break;
973 }
974}
975
976static struct display_timing lcd_centering_timging(struct display_timing
977 mode_crt_reg,
978 struct display_timing panel_crt_reg)
979{
980 struct display_timing crt_reg;
981
982 crt_reg.hor_total = panel_crt_reg.hor_total;
983 crt_reg.hor_addr = mode_crt_reg.hor_addr;
984 crt_reg.hor_blank_start =
985 (panel_crt_reg.hor_addr - mode_crt_reg.hor_addr) / 2 +
986 crt_reg.hor_addr;
987 crt_reg.hor_blank_end = panel_crt_reg.hor_blank_end;
988 crt_reg.hor_sync_start =
989 (panel_crt_reg.hor_sync_start -
990 panel_crt_reg.hor_blank_start) + crt_reg.hor_blank_start;
991 crt_reg.hor_sync_end = panel_crt_reg.hor_sync_end;
992
993 crt_reg.ver_total = panel_crt_reg.ver_total;
994 crt_reg.ver_addr = mode_crt_reg.ver_addr;
995 crt_reg.ver_blank_start =
996 (panel_crt_reg.ver_addr - mode_crt_reg.ver_addr) / 2 +
997 crt_reg.ver_addr;
998 crt_reg.ver_blank_end = panel_crt_reg.ver_blank_end;
999 crt_reg.ver_sync_start =
1000 (panel_crt_reg.ver_sync_start -
1001 panel_crt_reg.ver_blank_start) + crt_reg.ver_blank_start;
1002 crt_reg.ver_sync_end = panel_crt_reg.ver_sync_end;
1003
1004 return crt_reg;
1005}
1006
1007bool viafb_lcd_get_mobile_state(bool *mobile)
1008{
1009 unsigned char __iomem *romptr, *tableptr, *biosptr;
1010 u8 core_base;
1011 /* Rom address */
1012 const u32 romaddr = 0x000C0000;
1013 u16 start_pattern;
1014
1015 biosptr = ioremap(romaddr, 0x10000);
1016 start_pattern = readw(biosptr);
1017
1018 /* Compare pattern */
1019 if (start_pattern == 0xAA55) {
1020 /* Get the start of Table */
1021 /* 0x1B means BIOS offset position */
1022 romptr = biosptr + 0x1B;
1023 tableptr = biosptr + readw(romptr);
1024
1025 /* Get the start of biosver structure */
1026 /* 18 means BIOS version position. */
1027 romptr = tableptr + 18;
1028 romptr = biosptr + readw(romptr);
1029
1030 /* The offset should be 44, but the
1031 actual image is less three char. */
1032 /* pRom += 44; */
1033 romptr += 41;
1034
1035 core_base = readb(romptr);
1036
1037 if (core_base & 0x8)
1038 *mobile = false;
1039 else
1040 *mobile = true;
1041 /* release memory */
1042 iounmap(biosptr);
1043
1044 return true;
1045 } else {
1046 iounmap(biosptr);
1047 return false;
1048 }
1049}