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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright 1998-2008 VIA Technologies, Inc. All Rights Reserved.
4 * Copyright 2001-2008 S3 Graphics, Inc. All Rights Reserved.
5
6 */
7#include <linux/via-core.h>
8#include <linux/via_i2c.h>
9#include "global.h"
10
11#define viafb_compact_res(x, y) (((x)<<16)|(y))
12
13/* CLE266 Software Power Sequence */
14/* {Mask}, {Data}, {Delay} */
15static const int PowerSequenceOn[3][3] = {
16 {0x10, 0x08, 0x06}, {0x10, 0x08, 0x06}, {0x19, 0x1FE, 0x01}
17};
18static const int PowerSequenceOff[3][3] = {
19 {0x06, 0x08, 0x10}, {0x00, 0x00, 0x00}, {0xD2, 0x19, 0x01}
20};
21
22static struct _lcd_scaling_factor lcd_scaling_factor = {
23 /* LCD Horizontal Scaling Factor Register */
24 {LCD_HOR_SCALING_FACTOR_REG_NUM,
25 {{CR9F, 0, 1}, {CR77, 0, 7}, {CR79, 4, 5} } },
26 /* LCD Vertical Scaling Factor Register */
27 {LCD_VER_SCALING_FACTOR_REG_NUM,
28 {{CR79, 3, 3}, {CR78, 0, 7}, {CR79, 6, 7} } }
29};
30static struct _lcd_scaling_factor lcd_scaling_factor_CLE = {
31 /* LCD Horizontal Scaling Factor Register */
32 {LCD_HOR_SCALING_FACTOR_REG_NUM_CLE, {{CR77, 0, 7}, {CR79, 4, 5} } },
33 /* LCD Vertical Scaling Factor Register */
34 {LCD_VER_SCALING_FACTOR_REG_NUM_CLE, {{CR78, 0, 7}, {CR79, 6, 7} } }
35};
36
37static bool lvds_identify_integratedlvds(void);
38static void fp_id_to_vindex(int panel_id);
39static int lvds_register_read(int index);
40static void load_lcd_scaling(int set_hres, int set_vres, int panel_hres,
41 int panel_vres);
42static void lcd_patch_skew_dvp0(struct lvds_setting_information
43 *plvds_setting_info,
44 struct lvds_chip_information *plvds_chip_info);
45static void lcd_patch_skew_dvp1(struct lvds_setting_information
46 *plvds_setting_info,
47 struct lvds_chip_information *plvds_chip_info);
48static void lcd_patch_skew(struct lvds_setting_information
49 *plvds_setting_info, struct lvds_chip_information *plvds_chip_info);
50
51static void integrated_lvds_disable(struct lvds_setting_information
52 *plvds_setting_info,
53 struct lvds_chip_information *plvds_chip_info);
54static void integrated_lvds_enable(struct lvds_setting_information
55 *plvds_setting_info,
56 struct lvds_chip_information *plvds_chip_info);
57static void lcd_powersequence_off(void);
58static void lcd_powersequence_on(void);
59static void fill_lcd_format(void);
60static void check_diport_of_integrated_lvds(
61 struct lvds_chip_information *plvds_chip_info,
62 struct lvds_setting_information
63 *plvds_setting_info);
64
65static inline bool check_lvds_chip(int device_id_subaddr, int device_id)
66{
67 return lvds_register_read(device_id_subaddr) == device_id;
68}
69
70void viafb_init_lcd_size(void)
71{
72 DEBUG_MSG(KERN_INFO "viafb_init_lcd_size()\n");
73
74 fp_id_to_vindex(viafb_lcd_panel_id);
75 viaparinfo->lvds_setting_info2->lcd_panel_hres =
76 viaparinfo->lvds_setting_info->lcd_panel_hres;
77 viaparinfo->lvds_setting_info2->lcd_panel_vres =
78 viaparinfo->lvds_setting_info->lcd_panel_vres;
79 viaparinfo->lvds_setting_info2->device_lcd_dualedge =
80 viaparinfo->lvds_setting_info->device_lcd_dualedge;
81 viaparinfo->lvds_setting_info2->LCDDithering =
82 viaparinfo->lvds_setting_info->LCDDithering;
83}
84
85static bool lvds_identify_integratedlvds(void)
86{
87 if (viafb_display_hardware_layout == HW_LAYOUT_LCD_EXTERNAL_LCD2) {
88 /* Two dual channel LCD (Internal LVDS + External LVDS): */
89 /* If we have an external LVDS, such as VT1636, we should
90 have its chip ID already. */
91 if (viaparinfo->chip_info->lvds_chip_info.lvds_chip_name) {
92 viaparinfo->chip_info->lvds_chip_info2.lvds_chip_name =
93 INTEGRATED_LVDS;
94 DEBUG_MSG(KERN_INFO "Support two dual channel LVDS! "
95 "(Internal LVDS + External LVDS)\n");
96 } else {
97 viaparinfo->chip_info->lvds_chip_info.lvds_chip_name =
98 INTEGRATED_LVDS;
99 DEBUG_MSG(KERN_INFO "Not found external LVDS, "
100 "so can't support two dual channel LVDS!\n");
101 }
102 } else if (viafb_display_hardware_layout == HW_LAYOUT_LCD1_LCD2) {
103 /* Two single channel LCD (Internal LVDS + Internal LVDS): */
104 viaparinfo->chip_info->lvds_chip_info.lvds_chip_name =
105 INTEGRATED_LVDS;
106 viaparinfo->chip_info->lvds_chip_info2.lvds_chip_name =
107 INTEGRATED_LVDS;
108 DEBUG_MSG(KERN_INFO "Support two single channel LVDS! "
109 "(Internal LVDS + Internal LVDS)\n");
110 } else if (viafb_display_hardware_layout != HW_LAYOUT_DVI_ONLY) {
111 /* If we have found external LVDS, just use it,
112 otherwise, we will use internal LVDS as default. */
113 if (!viaparinfo->chip_info->lvds_chip_info.lvds_chip_name) {
114 viaparinfo->chip_info->lvds_chip_info.lvds_chip_name =
115 INTEGRATED_LVDS;
116 DEBUG_MSG(KERN_INFO "Found Integrated LVDS!\n");
117 }
118 } else {
119 viaparinfo->chip_info->lvds_chip_info.lvds_chip_name =
120 NON_LVDS_TRANSMITTER;
121 DEBUG_MSG(KERN_INFO "Do not support LVDS!\n");
122 return false;
123 }
124
125 return true;
126}
127
128bool viafb_lvds_trasmitter_identify(void)
129{
130 if (viafb_lvds_identify_vt1636(VIA_PORT_31)) {
131 viaparinfo->chip_info->lvds_chip_info.i2c_port = VIA_PORT_31;
132 DEBUG_MSG(KERN_INFO
133 "Found VIA VT1636 LVDS on port i2c 0x31\n");
134 } else {
135 if (viafb_lvds_identify_vt1636(VIA_PORT_2C)) {
136 viaparinfo->chip_info->lvds_chip_info.i2c_port =
137 VIA_PORT_2C;
138 DEBUG_MSG(KERN_INFO
139 "Found VIA VT1636 LVDS on port gpio 0x2c\n");
140 }
141 }
142
143 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CX700)
144 lvds_identify_integratedlvds();
145
146 if (viaparinfo->chip_info->lvds_chip_info.lvds_chip_name)
147 return true;
148 /* Check for VT1631: */
149 viaparinfo->chip_info->lvds_chip_info.lvds_chip_name = VT1631_LVDS;
150 viaparinfo->chip_info->lvds_chip_info.lvds_chip_target_addr =
151 VT1631_LVDS_I2C_ADDR;
152
153 if (check_lvds_chip(VT1631_DEVICE_ID_REG, VT1631_DEVICE_ID)) {
154 DEBUG_MSG(KERN_INFO "\n VT1631 LVDS ! \n");
155 DEBUG_MSG(KERN_INFO "\n %2d",
156 viaparinfo->chip_info->lvds_chip_info.lvds_chip_name);
157 DEBUG_MSG(KERN_INFO "\n %2d",
158 viaparinfo->chip_info->lvds_chip_info.lvds_chip_name);
159 return true;
160 }
161
162 viaparinfo->chip_info->lvds_chip_info.lvds_chip_name =
163 NON_LVDS_TRANSMITTER;
164 viaparinfo->chip_info->lvds_chip_info.lvds_chip_target_addr =
165 VT1631_LVDS_I2C_ADDR;
166 return false;
167}
168
169static void fp_id_to_vindex(int panel_id)
170{
171 DEBUG_MSG(KERN_INFO "fp_get_panel_id()\n");
172
173 if (panel_id > LCD_PANEL_ID_MAXIMUM)
174 viafb_lcd_panel_id = panel_id =
175 viafb_read_reg(VIACR, CR3F) & 0x0F;
176
177 switch (panel_id) {
178 case 0x0:
179 viaparinfo->lvds_setting_info->lcd_panel_hres = 640;
180 viaparinfo->lvds_setting_info->lcd_panel_vres = 480;
181 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
182 viaparinfo->lvds_setting_info->LCDDithering = 1;
183 break;
184 case 0x1:
185 viaparinfo->lvds_setting_info->lcd_panel_hres = 800;
186 viaparinfo->lvds_setting_info->lcd_panel_vres = 600;
187 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
188 viaparinfo->lvds_setting_info->LCDDithering = 1;
189 break;
190 case 0x2:
191 viaparinfo->lvds_setting_info->lcd_panel_hres = 1024;
192 viaparinfo->lvds_setting_info->lcd_panel_vres = 768;
193 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
194 viaparinfo->lvds_setting_info->LCDDithering = 1;
195 break;
196 case 0x3:
197 viaparinfo->lvds_setting_info->lcd_panel_hres = 1280;
198 viaparinfo->lvds_setting_info->lcd_panel_vres = 768;
199 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
200 viaparinfo->lvds_setting_info->LCDDithering = 1;
201 break;
202 case 0x4:
203 viaparinfo->lvds_setting_info->lcd_panel_hres = 1280;
204 viaparinfo->lvds_setting_info->lcd_panel_vres = 1024;
205 viaparinfo->lvds_setting_info->device_lcd_dualedge = 1;
206 viaparinfo->lvds_setting_info->LCDDithering = 1;
207 break;
208 case 0x5:
209 viaparinfo->lvds_setting_info->lcd_panel_hres = 1400;
210 viaparinfo->lvds_setting_info->lcd_panel_vres = 1050;
211 viaparinfo->lvds_setting_info->device_lcd_dualedge = 1;
212 viaparinfo->lvds_setting_info->LCDDithering = 1;
213 break;
214 case 0x6:
215 viaparinfo->lvds_setting_info->lcd_panel_hres = 1600;
216 viaparinfo->lvds_setting_info->lcd_panel_vres = 1200;
217 viaparinfo->lvds_setting_info->device_lcd_dualedge = 1;
218 viaparinfo->lvds_setting_info->LCDDithering = 1;
219 break;
220 case 0x8:
221 viaparinfo->lvds_setting_info->lcd_panel_hres = 800;
222 viaparinfo->lvds_setting_info->lcd_panel_vres = 480;
223 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
224 viaparinfo->lvds_setting_info->LCDDithering = 1;
225 break;
226 case 0x9:
227 viaparinfo->lvds_setting_info->lcd_panel_hres = 1024;
228 viaparinfo->lvds_setting_info->lcd_panel_vres = 768;
229 viaparinfo->lvds_setting_info->device_lcd_dualedge = 1;
230 viaparinfo->lvds_setting_info->LCDDithering = 1;
231 break;
232 case 0xA:
233 viaparinfo->lvds_setting_info->lcd_panel_hres = 1024;
234 viaparinfo->lvds_setting_info->lcd_panel_vres = 768;
235 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
236 viaparinfo->lvds_setting_info->LCDDithering = 0;
237 break;
238 case 0xB:
239 viaparinfo->lvds_setting_info->lcd_panel_hres = 1024;
240 viaparinfo->lvds_setting_info->lcd_panel_vres = 768;
241 viaparinfo->lvds_setting_info->device_lcd_dualedge = 1;
242 viaparinfo->lvds_setting_info->LCDDithering = 0;
243 break;
244 case 0xC:
245 viaparinfo->lvds_setting_info->lcd_panel_hres = 1280;
246 viaparinfo->lvds_setting_info->lcd_panel_vres = 768;
247 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
248 viaparinfo->lvds_setting_info->LCDDithering = 0;
249 break;
250 case 0xD:
251 viaparinfo->lvds_setting_info->lcd_panel_hres = 1280;
252 viaparinfo->lvds_setting_info->lcd_panel_vres = 1024;
253 viaparinfo->lvds_setting_info->device_lcd_dualedge = 1;
254 viaparinfo->lvds_setting_info->LCDDithering = 0;
255 break;
256 case 0xE:
257 viaparinfo->lvds_setting_info->lcd_panel_hres = 1400;
258 viaparinfo->lvds_setting_info->lcd_panel_vres = 1050;
259 viaparinfo->lvds_setting_info->device_lcd_dualedge = 1;
260 viaparinfo->lvds_setting_info->LCDDithering = 0;
261 break;
262 case 0xF:
263 viaparinfo->lvds_setting_info->lcd_panel_hres = 1600;
264 viaparinfo->lvds_setting_info->lcd_panel_vres = 1200;
265 viaparinfo->lvds_setting_info->device_lcd_dualedge = 1;
266 viaparinfo->lvds_setting_info->LCDDithering = 0;
267 break;
268 case 0x10:
269 viaparinfo->lvds_setting_info->lcd_panel_hres = 1366;
270 viaparinfo->lvds_setting_info->lcd_panel_vres = 768;
271 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
272 viaparinfo->lvds_setting_info->LCDDithering = 0;
273 break;
274 case 0x11:
275 viaparinfo->lvds_setting_info->lcd_panel_hres = 1024;
276 viaparinfo->lvds_setting_info->lcd_panel_vres = 600;
277 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
278 viaparinfo->lvds_setting_info->LCDDithering = 1;
279 break;
280 case 0x12:
281 viaparinfo->lvds_setting_info->lcd_panel_hres = 1280;
282 viaparinfo->lvds_setting_info->lcd_panel_vres = 768;
283 viaparinfo->lvds_setting_info->device_lcd_dualedge = 1;
284 viaparinfo->lvds_setting_info->LCDDithering = 1;
285 break;
286 case 0x13:
287 viaparinfo->lvds_setting_info->lcd_panel_hres = 1280;
288 viaparinfo->lvds_setting_info->lcd_panel_vres = 800;
289 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
290 viaparinfo->lvds_setting_info->LCDDithering = 1;
291 break;
292 case 0x14:
293 viaparinfo->lvds_setting_info->lcd_panel_hres = 1360;
294 viaparinfo->lvds_setting_info->lcd_panel_vres = 768;
295 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
296 viaparinfo->lvds_setting_info->LCDDithering = 0;
297 break;
298 case 0x15:
299 viaparinfo->lvds_setting_info->lcd_panel_hres = 1280;
300 viaparinfo->lvds_setting_info->lcd_panel_vres = 768;
301 viaparinfo->lvds_setting_info->device_lcd_dualedge = 1;
302 viaparinfo->lvds_setting_info->LCDDithering = 0;
303 break;
304 case 0x16:
305 viaparinfo->lvds_setting_info->lcd_panel_hres = 480;
306 viaparinfo->lvds_setting_info->lcd_panel_vres = 640;
307 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
308 viaparinfo->lvds_setting_info->LCDDithering = 1;
309 break;
310 case 0x17:
311 /* OLPC XO-1.5 panel */
312 viaparinfo->lvds_setting_info->lcd_panel_hres = 1200;
313 viaparinfo->lvds_setting_info->lcd_panel_vres = 900;
314 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
315 viaparinfo->lvds_setting_info->LCDDithering = 0;
316 break;
317 default:
318 viaparinfo->lvds_setting_info->lcd_panel_hres = 800;
319 viaparinfo->lvds_setting_info->lcd_panel_vres = 600;
320 viaparinfo->lvds_setting_info->device_lcd_dualedge = 0;
321 viaparinfo->lvds_setting_info->LCDDithering = 1;
322 }
323}
324
325static int lvds_register_read(int index)
326{
327 u8 data;
328
329 viafb_i2c_readbyte(VIA_PORT_2C,
330 (u8) viaparinfo->chip_info->lvds_chip_info.lvds_chip_target_addr,
331 (u8) index, &data);
332 return data;
333}
334
335static void load_lcd_scaling(int set_hres, int set_vres, int panel_hres,
336 int panel_vres)
337{
338 int reg_value = 0;
339 int viafb_load_reg_num;
340 struct io_register *reg = NULL;
341
342 DEBUG_MSG(KERN_INFO "load_lcd_scaling()!!\n");
343
344 /* LCD Scaling Enable */
345 viafb_write_reg_mask(CR79, VIACR, 0x07, BIT0 + BIT1 + BIT2);
346
347 /* Check if expansion for horizontal */
348 if (set_hres < panel_hres) {
349 /* Load Horizontal Scaling Factor */
350 switch (viaparinfo->chip_info->gfx_chip_name) {
351 case UNICHROME_CLE266:
352 case UNICHROME_K400:
353 reg_value =
354 CLE266_LCD_HOR_SCF_FORMULA(set_hres, panel_hres);
355 viafb_load_reg_num =
356 lcd_scaling_factor_CLE.lcd_hor_scaling_factor.
357 reg_num;
358 reg = lcd_scaling_factor_CLE.lcd_hor_scaling_factor.reg;
359 viafb_load_reg(reg_value,
360 viafb_load_reg_num, reg, VIACR);
361 break;
362 case UNICHROME_K800:
363 case UNICHROME_PM800:
364 case UNICHROME_CN700:
365 case UNICHROME_CX700:
366 case UNICHROME_K8M890:
367 case UNICHROME_P4M890:
368 case UNICHROME_P4M900:
369 case UNICHROME_CN750:
370 case UNICHROME_VX800:
371 case UNICHROME_VX855:
372 case UNICHROME_VX900:
373 reg_value =
374 K800_LCD_HOR_SCF_FORMULA(set_hres, panel_hres);
375 /* Horizontal scaling enabled */
376 viafb_write_reg_mask(CRA2, VIACR, 0xC0, BIT7 + BIT6);
377 viafb_load_reg_num =
378 lcd_scaling_factor.lcd_hor_scaling_factor.reg_num;
379 reg = lcd_scaling_factor.lcd_hor_scaling_factor.reg;
380 viafb_load_reg(reg_value,
381 viafb_load_reg_num, reg, VIACR);
382 break;
383 }
384
385 DEBUG_MSG(KERN_INFO "Horizontal Scaling value = %d", reg_value);
386 } else {
387 /* Horizontal scaling disabled */
388 viafb_write_reg_mask(CRA2, VIACR, 0x00, BIT7);
389 }
390
391 /* Check if expansion for vertical */
392 if (set_vres < panel_vres) {
393 /* Load Vertical Scaling Factor */
394 switch (viaparinfo->chip_info->gfx_chip_name) {
395 case UNICHROME_CLE266:
396 case UNICHROME_K400:
397 reg_value =
398 CLE266_LCD_VER_SCF_FORMULA(set_vres, panel_vres);
399 viafb_load_reg_num =
400 lcd_scaling_factor_CLE.lcd_ver_scaling_factor.
401 reg_num;
402 reg = lcd_scaling_factor_CLE.lcd_ver_scaling_factor.reg;
403 viafb_load_reg(reg_value,
404 viafb_load_reg_num, reg, VIACR);
405 break;
406 case UNICHROME_K800:
407 case UNICHROME_PM800:
408 case UNICHROME_CN700:
409 case UNICHROME_CX700:
410 case UNICHROME_K8M890:
411 case UNICHROME_P4M890:
412 case UNICHROME_P4M900:
413 case UNICHROME_CN750:
414 case UNICHROME_VX800:
415 case UNICHROME_VX855:
416 case UNICHROME_VX900:
417 reg_value =
418 K800_LCD_VER_SCF_FORMULA(set_vres, panel_vres);
419 /* Vertical scaling enabled */
420 viafb_write_reg_mask(CRA2, VIACR, 0x08, BIT3);
421 viafb_load_reg_num =
422 lcd_scaling_factor.lcd_ver_scaling_factor.reg_num;
423 reg = lcd_scaling_factor.lcd_ver_scaling_factor.reg;
424 viafb_load_reg(reg_value,
425 viafb_load_reg_num, reg, VIACR);
426 break;
427 }
428
429 DEBUG_MSG(KERN_INFO "Vertical Scaling value = %d", reg_value);
430 } else {
431 /* Vertical scaling disabled */
432 viafb_write_reg_mask(CRA2, VIACR, 0x00, BIT3);
433 }
434}
435
436static void via_pitch_alignment_patch_lcd(int iga_path, int hres, int bpp)
437{
438 unsigned char cr13, cr35, cr65, cr66, cr67;
439 unsigned long dwScreenPitch = 0;
440 unsigned long dwPitch;
441
442 dwPitch = hres * (bpp >> 3);
443 if (dwPitch & 0x1F) {
444 dwScreenPitch = ((dwPitch + 31) & ~31) >> 3;
445 if (iga_path == IGA2) {
446 if (bpp > 8) {
447 cr66 = (unsigned char)(dwScreenPitch & 0xFF);
448 viafb_write_reg(CR66, VIACR, cr66);
449 cr67 = viafb_read_reg(VIACR, CR67) & 0xFC;
450 cr67 |=
451 (unsigned
452 char)((dwScreenPitch & 0x300) >> 8);
453 viafb_write_reg(CR67, VIACR, cr67);
454 }
455
456 /* Fetch Count */
457 cr67 = viafb_read_reg(VIACR, CR67) & 0xF3;
458 cr67 |= (unsigned char)((dwScreenPitch & 0x600) >> 7);
459 viafb_write_reg(CR67, VIACR, cr67);
460 cr65 = (unsigned char)((dwScreenPitch >> 1) & 0xFF);
461 cr65 += 2;
462 viafb_write_reg(CR65, VIACR, cr65);
463 } else {
464 if (bpp > 8) {
465 cr13 = (unsigned char)(dwScreenPitch & 0xFF);
466 viafb_write_reg(CR13, VIACR, cr13);
467 cr35 = viafb_read_reg(VIACR, CR35) & 0x1F;
468 cr35 |=
469 (unsigned
470 char)((dwScreenPitch & 0x700) >> 3);
471 viafb_write_reg(CR35, VIACR, cr35);
472 }
473 }
474 }
475}
476static void lcd_patch_skew_dvp0(struct lvds_setting_information
477 *plvds_setting_info,
478 struct lvds_chip_information *plvds_chip_info)
479{
480 if (VT1636_LVDS == plvds_chip_info->lvds_chip_name) {
481 switch (viaparinfo->chip_info->gfx_chip_name) {
482 case UNICHROME_P4M900:
483 viafb_vt1636_patch_skew_on_vt3364(plvds_setting_info,
484 plvds_chip_info);
485 break;
486 case UNICHROME_P4M890:
487 viafb_vt1636_patch_skew_on_vt3327(plvds_setting_info,
488 plvds_chip_info);
489 break;
490 }
491 }
492}
493static void lcd_patch_skew_dvp1(struct lvds_setting_information
494 *plvds_setting_info,
495 struct lvds_chip_information *plvds_chip_info)
496{
497 if (VT1636_LVDS == plvds_chip_info->lvds_chip_name) {
498 switch (viaparinfo->chip_info->gfx_chip_name) {
499 case UNICHROME_CX700:
500 viafb_vt1636_patch_skew_on_vt3324(plvds_setting_info,
501 plvds_chip_info);
502 break;
503 }
504 }
505}
506static void lcd_patch_skew(struct lvds_setting_information
507 *plvds_setting_info, struct lvds_chip_information *plvds_chip_info)
508{
509 DEBUG_MSG(KERN_INFO "lcd_patch_skew\n");
510 switch (plvds_chip_info->output_interface) {
511 case INTERFACE_DVP0:
512 lcd_patch_skew_dvp0(plvds_setting_info, plvds_chip_info);
513 break;
514 case INTERFACE_DVP1:
515 lcd_patch_skew_dvp1(plvds_setting_info, plvds_chip_info);
516 break;
517 case INTERFACE_DFP_LOW:
518 if (UNICHROME_P4M900 == viaparinfo->chip_info->gfx_chip_name) {
519 viafb_write_reg_mask(CR99, VIACR, 0x08,
520 BIT0 + BIT1 + BIT2 + BIT3);
521 }
522 break;
523 }
524}
525
526/* LCD Set Mode */
527void viafb_lcd_set_mode(const struct fb_var_screeninfo *var, u16 cxres,
528 u16 cyres, struct lvds_setting_information *plvds_setting_info,
529 struct lvds_chip_information *plvds_chip_info)
530{
531 int set_iga = plvds_setting_info->iga_path;
532 int mode_bpp = var->bits_per_pixel;
533 int set_hres = cxres ? cxres : var->xres;
534 int set_vres = cyres ? cyres : var->yres;
535 int panel_hres = plvds_setting_info->lcd_panel_hres;
536 int panel_vres = plvds_setting_info->lcd_panel_vres;
537 u32 clock;
538 struct via_display_timing timing;
539 struct fb_var_screeninfo panel_var;
540 const struct fb_videomode *panel_crt_table;
541
542 DEBUG_MSG(KERN_INFO "viafb_lcd_set_mode!!\n");
543 /* Get panel table Pointer */
544 panel_crt_table = viafb_get_best_mode(panel_hres, panel_vres, 60);
545 viafb_fill_var_timing_info(&panel_var, panel_crt_table);
546 DEBUG_MSG(KERN_INFO "below viafb_lcd_set_mode!!\n");
547 if (VT1636_LVDS == plvds_chip_info->lvds_chip_name)
548 viafb_init_lvds_vt1636(plvds_setting_info, plvds_chip_info);
549 clock = PICOS2KHZ(panel_crt_table->pixclock) * 1000;
550 plvds_setting_info->vclk = clock;
551
552 if (set_iga == IGA2 && (set_hres < panel_hres || set_vres < panel_vres)
553 && plvds_setting_info->display_method == LCD_EXPANDSION) {
554 timing = var_to_timing(&panel_var, panel_hres, panel_vres);
555 load_lcd_scaling(set_hres, set_vres, panel_hres, panel_vres);
556 } else {
557 timing = var_to_timing(&panel_var, set_hres, set_vres);
558 if (set_iga == IGA2)
559 /* disable scaling */
560 via_write_reg_mask(VIACR, 0x79, 0x00,
561 BIT0 + BIT1 + BIT2);
562 }
563
564 if (set_iga == IGA1)
565 via_set_primary_timing(&timing);
566 else if (set_iga == IGA2)
567 via_set_secondary_timing(&timing);
568
569 /* Fetch count for IGA2 only */
570 viafb_load_fetch_count_reg(set_hres, mode_bpp / 8, set_iga);
571
572 if ((viaparinfo->chip_info->gfx_chip_name != UNICHROME_CLE266)
573 && (viaparinfo->chip_info->gfx_chip_name != UNICHROME_K400))
574 viafb_load_FIFO_reg(set_iga, set_hres, set_vres);
575
576 fill_lcd_format();
577 viafb_set_vclock(clock, set_iga);
578 lcd_patch_skew(plvds_setting_info, plvds_chip_info);
579
580 /* If K8M800, enable LCD Prefetch Mode. */
581 if ((viaparinfo->chip_info->gfx_chip_name == UNICHROME_K800)
582 || (UNICHROME_K8M890 == viaparinfo->chip_info->gfx_chip_name))
583 viafb_write_reg_mask(CR6A, VIACR, 0x01, BIT0);
584
585 /* Patch for non 32bit alignment mode */
586 via_pitch_alignment_patch_lcd(plvds_setting_info->iga_path, set_hres,
587 var->bits_per_pixel);
588}
589
590static void integrated_lvds_disable(struct lvds_setting_information
591 *plvds_setting_info,
592 struct lvds_chip_information *plvds_chip_info)
593{
594 bool turn_off_first_powersequence = false;
595 bool turn_off_second_powersequence = false;
596 if (INTERFACE_LVDS0LVDS1 == plvds_chip_info->output_interface)
597 turn_off_first_powersequence = true;
598 if (INTERFACE_LVDS0 == plvds_chip_info->output_interface)
599 turn_off_first_powersequence = true;
600 if (INTERFACE_LVDS1 == plvds_chip_info->output_interface)
601 turn_off_second_powersequence = true;
602 if (turn_off_second_powersequence) {
603 /* Use second power sequence control: */
604
605 /* Turn off power sequence. */
606 viafb_write_reg_mask(CRD4, VIACR, 0, BIT1);
607
608 /* Turn off back light. */
609 viafb_write_reg_mask(CRD3, VIACR, 0xC0, BIT6 + BIT7);
610 }
611 if (turn_off_first_powersequence) {
612 /* Use first power sequence control: */
613
614 /* Turn off power sequence. */
615 viafb_write_reg_mask(CR6A, VIACR, 0, BIT3);
616
617 /* Turn off back light. */
618 viafb_write_reg_mask(CR91, VIACR, 0xC0, BIT6 + BIT7);
619 }
620
621 /* Power off LVDS channel. */
622 switch (plvds_chip_info->output_interface) {
623 case INTERFACE_LVDS0:
624 {
625 viafb_write_reg_mask(CRD2, VIACR, 0x80, BIT7);
626 break;
627 }
628
629 case INTERFACE_LVDS1:
630 {
631 viafb_write_reg_mask(CRD2, VIACR, 0x40, BIT6);
632 break;
633 }
634
635 case INTERFACE_LVDS0LVDS1:
636 {
637 viafb_write_reg_mask(CRD2, VIACR, 0xC0, BIT6 + BIT7);
638 break;
639 }
640 }
641}
642
643static void integrated_lvds_enable(struct lvds_setting_information
644 *plvds_setting_info,
645 struct lvds_chip_information *plvds_chip_info)
646{
647 DEBUG_MSG(KERN_INFO "integrated_lvds_enable, out_interface:%d\n",
648 plvds_chip_info->output_interface);
649 if (plvds_setting_info->lcd_mode == LCD_SPWG)
650 viafb_write_reg_mask(CRD2, VIACR, 0x00, BIT0 + BIT1);
651 else
652 viafb_write_reg_mask(CRD2, VIACR, 0x03, BIT0 + BIT1);
653
654 switch (plvds_chip_info->output_interface) {
655 case INTERFACE_LVDS0LVDS1:
656 case INTERFACE_LVDS0:
657 /* Use first power sequence control: */
658 /* Use hardware control power sequence. */
659 viafb_write_reg_mask(CR91, VIACR, 0, BIT0);
660 /* Turn on back light. */
661 viafb_write_reg_mask(CR91, VIACR, 0, BIT6 + BIT7);
662 /* Turn on hardware power sequence. */
663 viafb_write_reg_mask(CR6A, VIACR, 0x08, BIT3);
664 break;
665 case INTERFACE_LVDS1:
666 /* Use second power sequence control: */
667 /* Use hardware control power sequence. */
668 viafb_write_reg_mask(CRD3, VIACR, 0, BIT0);
669 /* Turn on back light. */
670 viafb_write_reg_mask(CRD3, VIACR, 0, BIT6 + BIT7);
671 /* Turn on hardware power sequence. */
672 viafb_write_reg_mask(CRD4, VIACR, 0x02, BIT1);
673 break;
674 }
675
676 /* Power on LVDS channel. */
677 switch (plvds_chip_info->output_interface) {
678 case INTERFACE_LVDS0:
679 {
680 viafb_write_reg_mask(CRD2, VIACR, 0, BIT7);
681 break;
682 }
683
684 case INTERFACE_LVDS1:
685 {
686 viafb_write_reg_mask(CRD2, VIACR, 0, BIT6);
687 break;
688 }
689
690 case INTERFACE_LVDS0LVDS1:
691 {
692 viafb_write_reg_mask(CRD2, VIACR, 0, BIT6 + BIT7);
693 break;
694 }
695 }
696}
697
698void viafb_lcd_disable(void)
699{
700
701 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266) {
702 lcd_powersequence_off();
703 /* DI1 pad off */
704 viafb_write_reg_mask(SR1E, VIASR, 0x00, 0x30);
705 } else if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CX700) {
706 if (viafb_LCD2_ON
707 && (INTEGRATED_LVDS ==
708 viaparinfo->chip_info->lvds_chip_info2.lvds_chip_name))
709 integrated_lvds_disable(viaparinfo->lvds_setting_info,
710 &viaparinfo->chip_info->lvds_chip_info2);
711 if (INTEGRATED_LVDS ==
712 viaparinfo->chip_info->lvds_chip_info.lvds_chip_name)
713 integrated_lvds_disable(viaparinfo->lvds_setting_info,
714 &viaparinfo->chip_info->lvds_chip_info);
715 if (VT1636_LVDS == viaparinfo->chip_info->
716 lvds_chip_info.lvds_chip_name)
717 viafb_disable_lvds_vt1636(viaparinfo->lvds_setting_info,
718 &viaparinfo->chip_info->lvds_chip_info);
719 } else if (VT1636_LVDS ==
720 viaparinfo->chip_info->lvds_chip_info.lvds_chip_name) {
721 viafb_disable_lvds_vt1636(viaparinfo->lvds_setting_info,
722 &viaparinfo->chip_info->lvds_chip_info);
723 } else {
724 /* Backlight off */
725 viafb_write_reg_mask(SR3D, VIASR, 0x00, 0x20);
726 /* 24 bit DI data paht off */
727 viafb_write_reg_mask(CR91, VIACR, 0x80, 0x80);
728 }
729
730 /* Disable expansion bit */
731 viafb_write_reg_mask(CR79, VIACR, 0x00, 0x01);
732 /* Simultaneout disabled */
733 viafb_write_reg_mask(CR6B, VIACR, 0x00, 0x08);
734}
735
736static void set_lcd_output_path(int set_iga, int output_interface)
737{
738 switch (output_interface) {
739 case INTERFACE_DFP:
740 if ((UNICHROME_K8M890 == viaparinfo->chip_info->gfx_chip_name)
741 || (UNICHROME_P4M890 ==
742 viaparinfo->chip_info->gfx_chip_name))
743 viafb_write_reg_mask(CR97, VIACR, 0x84,
744 BIT7 + BIT2 + BIT1 + BIT0);
745 fallthrough;
746 case INTERFACE_DVP0:
747 case INTERFACE_DVP1:
748 case INTERFACE_DFP_HIGH:
749 case INTERFACE_DFP_LOW:
750 if (set_iga == IGA2)
751 viafb_write_reg(CR91, VIACR, 0x00);
752 break;
753 }
754}
755
756void viafb_lcd_enable(void)
757{
758 viafb_write_reg_mask(CR6B, VIACR, 0x00, BIT3);
759 viafb_write_reg_mask(CR6A, VIACR, 0x08, BIT3);
760 set_lcd_output_path(viaparinfo->lvds_setting_info->iga_path,
761 viaparinfo->chip_info->lvds_chip_info.output_interface);
762 if (viafb_LCD2_ON)
763 set_lcd_output_path(viaparinfo->lvds_setting_info2->iga_path,
764 viaparinfo->chip_info->
765 lvds_chip_info2.output_interface);
766
767 if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266) {
768 /* DI1 pad on */
769 viafb_write_reg_mask(SR1E, VIASR, 0x30, 0x30);
770 lcd_powersequence_on();
771 } else if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CX700) {
772 if (viafb_LCD2_ON && (INTEGRATED_LVDS ==
773 viaparinfo->chip_info->lvds_chip_info2.lvds_chip_name))
774 integrated_lvds_enable(viaparinfo->lvds_setting_info2, \
775 &viaparinfo->chip_info->lvds_chip_info2);
776 if (INTEGRATED_LVDS ==
777 viaparinfo->chip_info->lvds_chip_info.lvds_chip_name)
778 integrated_lvds_enable(viaparinfo->lvds_setting_info,
779 &viaparinfo->chip_info->lvds_chip_info);
780 if (VT1636_LVDS == viaparinfo->chip_info->
781 lvds_chip_info.lvds_chip_name)
782 viafb_enable_lvds_vt1636(viaparinfo->
783 lvds_setting_info, &viaparinfo->chip_info->
784 lvds_chip_info);
785 } else if (VT1636_LVDS ==
786 viaparinfo->chip_info->lvds_chip_info.lvds_chip_name) {
787 viafb_enable_lvds_vt1636(viaparinfo->lvds_setting_info,
788 &viaparinfo->chip_info->lvds_chip_info);
789 } else {
790 /* Backlight on */
791 viafb_write_reg_mask(SR3D, VIASR, 0x20, 0x20);
792 /* 24 bit DI data paht on */
793 viafb_write_reg_mask(CR91, VIACR, 0x00, 0x80);
794 /* LCD enabled */
795 viafb_write_reg_mask(CR6A, VIACR, 0x48, 0x48);
796 }
797}
798
799static void lcd_powersequence_off(void)
800{
801 int i, mask, data;
802
803 /* Software control power sequence */
804 viafb_write_reg_mask(CR91, VIACR, 0x11, 0x11);
805
806 for (i = 0; i < 3; i++) {
807 mask = PowerSequenceOff[0][i];
808 data = PowerSequenceOff[1][i] & mask;
809 viafb_write_reg_mask(CR91, VIACR, (u8) data, (u8) mask);
810 udelay(PowerSequenceOff[2][i]);
811 }
812
813 /* Disable LCD */
814 viafb_write_reg_mask(CR6A, VIACR, 0x00, 0x08);
815}
816
817static void lcd_powersequence_on(void)
818{
819 int i, mask, data;
820
821 /* Software control power sequence */
822 viafb_write_reg_mask(CR91, VIACR, 0x11, 0x11);
823
824 /* Enable LCD */
825 viafb_write_reg_mask(CR6A, VIACR, 0x08, 0x08);
826
827 for (i = 0; i < 3; i++) {
828 mask = PowerSequenceOn[0][i];
829 data = PowerSequenceOn[1][i] & mask;
830 viafb_write_reg_mask(CR91, VIACR, (u8) data, (u8) mask);
831 udelay(PowerSequenceOn[2][i]);
832 }
833
834 udelay(1);
835}
836
837static void fill_lcd_format(void)
838{
839 u8 bdithering = 0, bdual = 0;
840
841 if (viaparinfo->lvds_setting_info->device_lcd_dualedge)
842 bdual = BIT4;
843 if (viaparinfo->lvds_setting_info->LCDDithering)
844 bdithering = BIT0;
845 /* Dual & Dithering */
846 viafb_write_reg_mask(CR88, VIACR, (bdithering | bdual), BIT4 + BIT0);
847}
848
849static void check_diport_of_integrated_lvds(
850 struct lvds_chip_information *plvds_chip_info,
851 struct lvds_setting_information
852 *plvds_setting_info)
853{
854 /* Determine LCD DI Port by hardware layout. */
855 switch (viafb_display_hardware_layout) {
856 case HW_LAYOUT_LCD_ONLY:
857 {
858 if (plvds_setting_info->device_lcd_dualedge) {
859 plvds_chip_info->output_interface =
860 INTERFACE_LVDS0LVDS1;
861 } else {
862 plvds_chip_info->output_interface =
863 INTERFACE_LVDS0;
864 }
865
866 break;
867 }
868
869 case HW_LAYOUT_DVI_ONLY:
870 {
871 plvds_chip_info->output_interface = INTERFACE_NONE;
872 break;
873 }
874
875 case HW_LAYOUT_LCD1_LCD2:
876 case HW_LAYOUT_LCD_EXTERNAL_LCD2:
877 {
878 plvds_chip_info->output_interface =
879 INTERFACE_LVDS0LVDS1;
880 break;
881 }
882
883 case HW_LAYOUT_LCD_DVI:
884 {
885 plvds_chip_info->output_interface = INTERFACE_LVDS1;
886 break;
887 }
888
889 default:
890 {
891 plvds_chip_info->output_interface = INTERFACE_LVDS1;
892 break;
893 }
894 }
895
896 DEBUG_MSG(KERN_INFO
897 "Display Hardware Layout: 0x%x, LCD DI Port: 0x%x\n",
898 viafb_display_hardware_layout,
899 plvds_chip_info->output_interface);
900}
901
902void viafb_init_lvds_output_interface(struct lvds_chip_information
903 *plvds_chip_info,
904 struct lvds_setting_information
905 *plvds_setting_info)
906{
907 if (INTERFACE_NONE != plvds_chip_info->output_interface) {
908 /*Do nothing, lcd port is specified by module parameter */
909 return;
910 }
911
912 switch (plvds_chip_info->lvds_chip_name) {
913
914 case VT1636_LVDS:
915 switch (viaparinfo->chip_info->gfx_chip_name) {
916 case UNICHROME_CX700:
917 plvds_chip_info->output_interface = INTERFACE_DVP1;
918 break;
919 case UNICHROME_CN700:
920 plvds_chip_info->output_interface = INTERFACE_DFP_LOW;
921 break;
922 default:
923 plvds_chip_info->output_interface = INTERFACE_DVP0;
924 break;
925 }
926 break;
927
928 case INTEGRATED_LVDS:
929 check_diport_of_integrated_lvds(plvds_chip_info,
930 plvds_setting_info);
931 break;
932
933 default:
934 switch (viaparinfo->chip_info->gfx_chip_name) {
935 case UNICHROME_K8M890:
936 case UNICHROME_P4M900:
937 case UNICHROME_P4M890:
938 plvds_chip_info->output_interface = INTERFACE_DFP_LOW;
939 break;
940 default:
941 plvds_chip_info->output_interface = INTERFACE_DFP;
942 break;
943 }
944 break;
945 }
946}
947
948bool viafb_lcd_get_mobile_state(bool *mobile)
949{
950 unsigned char __iomem *romptr, *tableptr, *biosptr;
951 u8 core_base;
952 /* Rom address */
953 const u32 romaddr = 0x000C0000;
954 u16 start_pattern;
955
956 biosptr = ioremap(romaddr, 0x10000);
957 if (!biosptr)
958 return false;
959
960 start_pattern = readw(biosptr);
961
962 /* Compare pattern */
963 if (start_pattern == 0xAA55) {
964 /* Get the start of Table */
965 /* 0x1B means BIOS offset position */
966 romptr = biosptr + 0x1B;
967 tableptr = biosptr + readw(romptr);
968
969 /* Get the start of biosver structure */
970 /* 18 means BIOS version position. */
971 romptr = tableptr + 18;
972 romptr = biosptr + readw(romptr);
973
974 /* The offset should be 44, but the
975 actual image is less three char. */
976 /* pRom += 44; */
977 romptr += 41;
978
979 core_base = readb(romptr);
980
981 if (core_base & 0x8)
982 *mobile = false;
983 else
984 *mobile = true;
985 /* release memory */
986 iounmap(biosptr);
987
988 return true;
989 } else {
990 iounmap(biosptr);
991 return false;
992 }
993}