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5a8c51cd WD |
1 | /* |
2 | * (C) Copyright 2003 | |
3 | * | |
4 | * Pantelis Antoniou <panto@intracom.gr> | |
5 | * Intracom S.A. | |
6 | * | |
7 | * See file CREDITS for list of people who contributed to this | |
8 | * project. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public License as | |
12 | * published by the Free Software Foundation; either version 2 of | |
13 | * the License, or (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
23 | * MA 02111-1307 USA | |
24 | */ | |
25 | ||
26 | #include <common.h> | |
27 | #include <watchdog.h> | |
28 | ||
29 | #include <sed156x.h> | |
30 | ||
5a8c51cd WD |
31 | /* configure according to the selected display */ |
32 | #if defined(CONFIG_SED156X_PG12864Q) | |
33 | #define LCD_WIDTH 128 | |
34 | #define LCD_HEIGHT 64 | |
35 | #define LCD_LINES 64 | |
36 | #define LCD_PAGES 9 | |
37 | #define LCD_COLUMNS 132 | |
38 | #else | |
39 | #error Unsupported SED156x configuration | |
40 | #endif | |
41 | ||
42 | /* include the font data */ | |
43 | #include <video_font.h> | |
44 | ||
45 | #if VIDEO_FONT_WIDTH != 8 || VIDEO_FONT_HEIGHT != 16 | |
46 | #error Expecting VIDEO_FONT_WIDTH == 8 && VIDEO_FONT_HEIGHT == 16 | |
47 | #endif | |
48 | ||
49 | #define LCD_BYTE_WIDTH (LCD_WIDTH / 8) | |
50 | #define VIDEO_FONT_BYTE_WIDTH (VIDEO_FONT_WIDTH / 8) | |
51 | ||
52 | #define LCD_TEXT_WIDTH (LCD_WIDTH / VIDEO_FONT_WIDTH) | |
53 | #define LCD_TEXT_HEIGHT (LCD_HEIGHT / VIDEO_FONT_HEIGHT) | |
54 | ||
55 | #define LCD_BYTE_LINESZ (LCD_BYTE_WIDTH * VIDEO_FONT_HEIGHT) | |
56 | ||
57 | const int sed156x_text_width = LCD_TEXT_WIDTH; | |
58 | const int sed156x_text_height = LCD_TEXT_HEIGHT; | |
59 | ||
60 | /**************************************************************************************/ | |
61 | ||
62 | #define SED156X_SPI_RXD() (SED156X_SPI_RXD_PORT & SED156X_SPI_RXD_MASK) | |
63 | ||
64 | #define SED156X_SPI_TXD(x) \ | |
65 | do { \ | |
66 | if (x) \ | |
67 | SED156X_SPI_TXD_PORT |= SED156X_SPI_TXD_MASK; \ | |
68 | else \ | |
69 | SED156X_SPI_TXD_PORT &= ~SED156X_SPI_TXD_MASK; \ | |
70 | } while(0) | |
71 | ||
72 | #define SED156X_SPI_CLK(x) \ | |
73 | do { \ | |
74 | if (x) \ | |
75 | SED156X_SPI_CLK_PORT |= SED156X_SPI_CLK_MASK; \ | |
76 | else \ | |
77 | SED156X_SPI_CLK_PORT &= ~SED156X_SPI_CLK_MASK; \ | |
78 | } while(0) | |
79 | ||
80 | #define SED156X_SPI_CLK_TOGGLE() (SED156X_SPI_CLK_PORT ^= SED156X_SPI_CLK_MASK) | |
81 | ||
82 | #define SED156X_SPI_BIT_DELAY() /* no delay */ | |
83 | ||
84 | #define SED156X_CS(x) \ | |
85 | do { \ | |
86 | if (x) \ | |
87 | SED156X_CS_PORT |= SED156X_CS_MASK; \ | |
88 | else \ | |
89 | SED156X_CS_PORT &= ~SED156X_CS_MASK; \ | |
90 | } while(0) | |
91 | ||
92 | #define SED156X_A0(x) \ | |
93 | do { \ | |
94 | if (x) \ | |
95 | SED156X_A0_PORT |= SED156X_A0_MASK; \ | |
96 | else \ | |
97 | SED156X_A0_PORT &= ~SED156X_A0_MASK; \ | |
98 | } while(0) | |
99 | ||
100 | /**************************************************************************************/ | |
101 | ||
102 | /*** LCD Commands ***/ | |
103 | ||
104 | #define LCD_ON 0xAF /* Display ON */ | |
105 | #define LCD_OFF 0xAE /* Display OFF */ | |
106 | #define LCD_LADDR 0x40 /* Display start line set + (6-bit) address */ | |
107 | #define LCD_PADDR 0xB0 /* Page address set + (4-bit) page */ | |
108 | #define LCD_CADRH 0x10 /* Column address set upper + (4-bit) column hi */ | |
109 | #define LCD_CADRL 0x00 /* Column address set lower + (4-bit) column lo */ | |
110 | #define LCD_ADC_NRM 0xA0 /* ADC select Normal */ | |
111 | #define LCD_ADC_REV 0xA1 /* ADC select Reverse */ | |
112 | #define LCD_DSP_NRM 0xA6 /* LCD display Normal */ | |
113 | #define LCD_DSP_REV 0xA7 /* LCD display Reverse */ | |
114 | #define LCD_DPT_NRM 0xA4 /* Display all points Normal */ | |
115 | #define LCD_DPT_ALL 0xA5 /* Display all points ON */ | |
116 | #define LCD_BIAS9 0xA2 /* LCD bias set 1/9 */ | |
117 | #define LCD_BIAS7 0xA3 /* LCD bias set 1/7 */ | |
118 | #define LCD_CAINC 0xE0 /* Read/modify/write */ | |
119 | #define LCD_CAEND 0xEE /* End */ | |
120 | #define LCD_RESET 0xE2 /* Reset */ | |
121 | #define LCD_C_NRM 0xC0 /* Common output mode select Normal direction */ | |
122 | #define LCD_C_RVS 0xC8 /* Common output mode select Reverse direction */ | |
123 | #define LCD_PWRMD 0x28 /* Power control set + (3-bit) mode */ | |
124 | #define LCD_RESRT 0x20 /* V5 v. reg. int. resistor ratio set + (3-bit) ratio */ | |
125 | #define LCD_EVSET 0x81 /* Electronic volume mode set + byte = (6-bit) volume */ | |
126 | #define LCD_SIOFF 0xAC /* Static indicator OFF */ | |
127 | #define LCD_SION 0xAD /* Static indicator ON + byte = (2-bit) mode */ | |
128 | #define LCD_NOP 0xE3 /* NOP */ | |
129 | #define LCD_TEST 0xF0 /* Test/Test mode reset (Note: *DO NOT USE*) */ | |
130 | ||
131 | /*------------------------------------------------------------------------------- | |
132 | Compound commands | |
133 | ------------------------------------------------------------------------------- | |
134 | Command Description Commands | |
135 | ---------- ------------------------ ------------------------------------- | |
136 | POWS_ON POWER SAVER ON command LCD_OFF, LCD_D_ALL | |
137 | POWS_OFF POWER SAVER OFF command LCD_D_NRM | |
138 | SLEEPON SLEEP mode LCD_SIOFF, POWS_ON | |
139 | SLEEPOFF SLEEP mode cancel LCD_D_NRM, LCD_SION, LCD_SIS_??? | |
140 | STDBYON STAND BY mode LCD_SION, POWS_ON | |
141 | STDBYOFF STAND BY mode cancel LCD_D_NRM | |
142 | -------------------------------------------------------------------------------*/ | |
143 | ||
144 | /*** LCD various parameters ***/ | |
145 | #define LCD_PPB 8 /* Pixels per byte (display is B/W, 1 bit per pixel) */ | |
146 | ||
147 | /*** LCD Status byte masks ***/ | |
148 | #define LCD_S_BUSY 0x80 /* Status Read - BUSY mask */ | |
149 | #define LCD_S_ADC 0x40 /* Status Read - ADC mask */ | |
150 | #define LCD_S_ONOFF 0x20 /* Status Read - ON/OFF mask */ | |
151 | #define LCD_S_RESET 0x10 /* Status Read - RESET mask */ | |
152 | ||
153 | /*** LCD commands parameter masks ***/ | |
154 | #define LCD_M_LADDR 0x3F /* Display start line (6-bit) address mask */ | |
155 | #define LCD_M_PADDR 0x0F /* Page address (4-bit) page mask */ | |
156 | #define LCD_M_CADRH 0x0F /* Column address upper (4-bit) column hi mask */ | |
157 | #define LCD_M_CADRL 0x0F /* Column address lower (4-bit) column lo mask */ | |
158 | #define LCD_M_PWRMD 0x07 /* Power control (3-bit) mode mask */ | |
159 | #define LCD_M_RESRT 0x07 /* V5 v. reg. int. resistor ratio (3-bit) ratio mask */ | |
160 | #define LCD_M_EVSET 0x3F /* Electronic volume mode byte (6-bit) volume mask */ | |
161 | #define LCD_M_SION 0x03 /* Static indicator ON (2-bit) mode mask */ | |
162 | ||
163 | /*** LCD Power control cirquits control masks ***/ | |
164 | #define LCD_PWRBSTR 0x04 /* Power control mode - Booster cirquit ON */ | |
165 | #define LCD_PWRVREG 0x02 /* Power control mode - Voltage regulator cirquit ON */ | |
166 | #define LCD_PWRVFOL 0x01 /* Power control mode - Voltage follower cirquit ON */ | |
167 | ||
168 | /*** LCD Static indicator states ***/ | |
169 | #define LCD_SIS_OFF 0x00 /* Static indicator register set - OFF state */ | |
170 | #define LCD_SIS_BL 0x01 /* Static indicator register set - 1s blink state */ | |
171 | #define LCD_SIS_RBL 0x02 /* Static indicator register set - .5s rapid blink state */ | |
172 | #define LCD_SIS_ON 0x03 /* Static indicator register set - constantly on state */ | |
173 | ||
174 | /*** LCD functions special parameters (commands) ***/ | |
175 | #define LCD_PREVP 0x80 /* Page number for moving to previous */ | |
176 | #define LCD_NEXTP 0x81 /* or next page */ | |
177 | #define LCD_ERR_P 0xFF /* Error in page number */ | |
178 | ||
179 | /*** LCD initialization settings ***/ | |
180 | #define LCD_BIAS LCD_BIAS9 /* Bias: 1/9 */ | |
181 | #define LCD_ADCMODE LCD_ADC_NRM /* ADC mode: normal */ | |
182 | #define LCD_COMDIR LCD_C_NRM /* Common output mode: normal */ | |
183 | #define LCD_RRATIO 0 /* Resistor ratio: 0 */ | |
184 | #define LCD_CNTRST 0x1C /* electronic volume: 1Ch */ | |
185 | #define LCD_POWERM (LCD_PWRBSTR | LCD_PWRVREG | LCD_PWRVFOL) /* Power mode: All on */ | |
186 | ||
187 | /**************************************************************************************/ | |
188 | ||
189 | static inline unsigned int sed156x_transfer(unsigned int val) | |
190 | { | |
191 | unsigned int rx; | |
192 | int b; | |
193 | ||
194 | rx = 0; b = 8; | |
195 | while (--b >= 0) { | |
196 | SED156X_SPI_TXD(val & 0x80); | |
197 | val <<= 1; | |
198 | SED156X_SPI_CLK_TOGGLE(); | |
199 | SED156X_SPI_BIT_DELAY(); | |
200 | rx <<= 1; | |
201 | if (SED156X_SPI_RXD()) | |
202 | rx |= 1; | |
203 | SED156X_SPI_CLK_TOGGLE(); | |
204 | SED156X_SPI_BIT_DELAY(); | |
205 | } | |
206 | ||
207 | return rx; | |
208 | } | |
209 | ||
210 | unsigned int sed156x_data_transfer(unsigned int val) | |
211 | { | |
212 | unsigned int rx; | |
213 | ||
214 | SED156X_SPI_CLK(1); | |
215 | SED156X_CS(0); | |
216 | SED156X_A0(1); | |
217 | ||
218 | rx = sed156x_transfer(val); | |
219 | ||
220 | SED156X_CS(1); | |
221 | ||
222 | return rx; | |
223 | } | |
224 | ||
225 | void sed156x_data_block_transfer(const u8 *p, int size) | |
226 | { | |
227 | SED156X_SPI_CLK(1); | |
228 | SED156X_CS(0); | |
229 | SED156X_A0(1); | |
230 | ||
231 | while (--size >= 0) | |
232 | sed156x_transfer(*p++); | |
233 | ||
234 | SED156X_CS(1); | |
235 | } | |
236 | ||
237 | unsigned int sed156x_cmd_transfer(unsigned int val) | |
238 | { | |
239 | unsigned int rx; | |
240 | ||
241 | SED156X_SPI_CLK(1); | |
242 | SED156X_CS(0); | |
243 | SED156X_A0(0); | |
244 | ||
245 | rx = sed156x_transfer(val); | |
246 | ||
247 | SED156X_CS(1); | |
248 | SED156X_A0(1); | |
249 | ||
250 | return rx; | |
251 | } | |
252 | ||
253 | /******************************************************************************/ | |
254 | ||
255 | static u8 hw_screen[LCD_PAGES][LCD_COLUMNS]; | |
256 | static u8 last_hw_screen[LCD_PAGES][LCD_COLUMNS]; | |
257 | static u8 sw_screen[LCD_BYTE_WIDTH * LCD_HEIGHT]; | |
258 | ||
259 | void sed156x_sync(void) | |
260 | { | |
261 | int i, j, last_page; | |
262 | u8 *d; | |
263 | const u8 *s, *e, *b, *r; | |
264 | u8 v0, v1, v2, v3, v4, v5, v6, v7; | |
265 | ||
266 | /* copy and rotate sw_screen to hw_screen */ | |
267 | for (i = 0; i < LCD_HEIGHT / 8; i++) { | |
268 | ||
269 | d = &hw_screen[i][0]; | |
270 | s = &sw_screen[LCD_BYTE_WIDTH * 8 * i + LCD_BYTE_WIDTH - 1]; | |
271 | ||
272 | for (j = 0; j < LCD_WIDTH / 8; j++) { | |
273 | ||
274 | v0 = s[0 * LCD_BYTE_WIDTH]; | |
275 | v1 = s[1 * LCD_BYTE_WIDTH]; | |
276 | v2 = s[2 * LCD_BYTE_WIDTH]; | |
277 | v3 = s[3 * LCD_BYTE_WIDTH]; | |
278 | v4 = s[4 * LCD_BYTE_WIDTH]; | |
279 | v5 = s[5 * LCD_BYTE_WIDTH]; | |
280 | v6 = s[6 * LCD_BYTE_WIDTH]; | |
281 | v7 = s[7 * LCD_BYTE_WIDTH]; | |
282 | ||
283 | d[0] = ((v7 & 0x01) << 7) | | |
284 | ((v6 & 0x01) << 6) | | |
285 | ((v5 & 0x01) << 5) | | |
286 | ((v4 & 0x01) << 4) | | |
287 | ((v3 & 0x01) << 3) | | |
288 | ((v2 & 0x01) << 2) | | |
289 | ((v1 & 0x01) << 1) | | |
290 | (v0 & 0x01) ; | |
291 | ||
292 | d[1] = ((v7 & 0x02) << 6) | | |
293 | ((v6 & 0x02) << 5) | | |
294 | ((v5 & 0x02) << 4) | | |
295 | ((v4 & 0x02) << 3) | | |
296 | ((v3 & 0x02) << 2) | | |
297 | ((v2 & 0x02) << 1) | | |
298 | ((v1 & 0x02) << 0) | | |
299 | ((v0 & 0x02) >> 1) ; | |
300 | ||
301 | d[2] = ((v7 & 0x04) << 5) | | |
302 | ((v6 & 0x04) << 4) | | |
303 | ((v5 & 0x04) << 3) | | |
304 | ((v4 & 0x04) << 2) | | |
305 | ((v3 & 0x04) << 1) | | |
306 | (v2 & 0x04) | | |
307 | ((v1 & 0x04) >> 1) | | |
308 | ((v0 & 0x04) >> 2) ; | |
309 | ||
310 | d[3] = ((v7 & 0x08) << 4) | | |
311 | ((v6 & 0x08) << 3) | | |
312 | ((v5 & 0x08) << 2) | | |
313 | ((v4 & 0x08) << 1) | | |
314 | (v3 & 0x08) | | |
315 | ((v2 & 0x08) >> 1) | | |
316 | ((v1 & 0x08) >> 2) | | |
317 | ((v0 & 0x08) >> 3) ; | |
318 | ||
319 | d[4] = ((v7 & 0x10) << 3) | | |
320 | ((v6 & 0x10) << 2) | | |
321 | ((v5 & 0x10) << 1) | | |
322 | (v4 & 0x10) | | |
323 | ((v3 & 0x10) >> 1) | | |
324 | ((v2 & 0x10) >> 2) | | |
325 | ((v1 & 0x10) >> 3) | | |
326 | ((v0 & 0x10) >> 4) ; | |
327 | ||
328 | d[5] = ((v7 & 0x20) << 2) | | |
329 | ((v6 & 0x20) << 1) | | |
330 | (v5 & 0x20) | | |
331 | ((v4 & 0x20) >> 1) | | |
332 | ((v3 & 0x20) >> 2) | | |
333 | ((v2 & 0x20) >> 3) | | |
334 | ((v1 & 0x20) >> 4) | | |
335 | ((v0 & 0x20) >> 5) ; | |
336 | ||
337 | d[6] = ((v7 & 0x40) << 1) | | |
338 | (v6 & 0x40) | | |
339 | ((v5 & 0x40) >> 1) | | |
340 | ((v4 & 0x40) >> 2) | | |
341 | ((v3 & 0x40) >> 3) | | |
342 | ((v2 & 0x40) >> 4) | | |
343 | ((v1 & 0x40) >> 5) | | |
344 | ((v0 & 0x40) >> 6) ; | |
345 | ||
346 | d[7] = (v7 & 0x80) | | |
347 | ((v6 & 0x80) >> 1) | | |
348 | ((v5 & 0x80) >> 2) | | |
349 | ((v4 & 0x80) >> 3) | | |
350 | ((v3 & 0x80) >> 4) | | |
351 | ((v2 & 0x80) >> 5) | | |
352 | ((v1 & 0x80) >> 6) | | |
353 | ((v0 & 0x80) >> 7) ; | |
354 | ||
355 | d += 8; | |
356 | s--; | |
357 | } | |
358 | } | |
359 | ||
360 | /* and now output only the differences */ | |
361 | for (i = 0; i < LCD_PAGES; i++) { | |
362 | ||
363 | b = &hw_screen[i][0]; | |
364 | e = &hw_screen[i][LCD_COLUMNS]; | |
365 | ||
366 | d = &last_hw_screen[i][0]; | |
367 | s = b; | |
368 | ||
369 | last_page = -1; | |
370 | ||
371 | /* update only the differences */ | |
372 | do { | |
373 | while (s < e && *s == *d) { | |
374 | s++; | |
375 | d++; | |
376 | } | |
377 | if (s == e) | |
378 | break; | |
379 | r = s; | |
380 | while (s < e && *s != *d) | |
381 | *d++ = *s++; | |
382 | ||
383 | j = r - b; | |
384 | ||
385 | if (i != last_page) { | |
386 | sed156x_cmd_transfer(LCD_PADDR | i); | |
387 | last_page = i; | |
388 | } | |
389 | ||
390 | sed156x_cmd_transfer(LCD_CADRH | ((j >> 4) & 0x0F)); | |
391 | sed156x_cmd_transfer(LCD_CADRL | (j & 0x0F)); | |
392 | sed156x_data_block_transfer(r, s - r); | |
393 | ||
394 | } while (s < e); | |
395 | } | |
396 | ||
397 | /******** | |
398 | for (i = 0; i < LCD_PAGES; i++) { | |
399 | sed156x_cmd_transfer(LCD_PADDR | i); | |
400 | sed156x_cmd_transfer(LCD_CADRH | 0); | |
401 | sed156x_cmd_transfer(LCD_CADRL | 0); | |
402 | sed156x_data_block_transfer(&hw_screen[i][0], LCD_COLUMNS); | |
403 | } | |
404 | memcpy(last_hw_screen, hw_screen, sizeof(last_hw_screen)); | |
405 | ********/ | |
406 | } | |
407 | ||
408 | void sed156x_clear(void) | |
409 | { | |
410 | memset(sw_screen, 0, sizeof(sw_screen)); | |
411 | } | |
412 | ||
413 | void sed156x_output_at(int x, int y, const char *str, int size) | |
414 | { | |
415 | int i, j; | |
416 | u8 *p; | |
417 | const u8 *s; | |
418 | ||
419 | if ((unsigned int)y >= LCD_TEXT_HEIGHT || (unsigned int)x >= LCD_TEXT_WIDTH) | |
420 | return; | |
421 | ||
422 | p = &sw_screen[y * VIDEO_FONT_HEIGHT * LCD_BYTE_WIDTH + x * VIDEO_FONT_BYTE_WIDTH]; | |
423 | ||
424 | while (--size >= 0) { | |
425 | ||
426 | s = &video_fontdata[((int)*str++ & 0xff) * VIDEO_FONT_BYTE_WIDTH * VIDEO_FONT_HEIGHT]; | |
427 | for (i = 0; i < VIDEO_FONT_HEIGHT; i++) { | |
428 | for (j = 0; j < VIDEO_FONT_BYTE_WIDTH; j++) | |
429 | *p++ = *s++; | |
430 | p += LCD_BYTE_WIDTH - VIDEO_FONT_BYTE_WIDTH; | |
431 | } | |
432 | p -= (LCD_BYTE_LINESZ - VIDEO_FONT_BYTE_WIDTH); | |
433 | ||
434 | if (x >= LCD_TEXT_WIDTH) | |
435 | break; | |
436 | x++; | |
437 | } | |
438 | } | |
439 | ||
440 | void sed156x_reverse_at(int x, int y, int size) | |
441 | { | |
442 | int i, j; | |
443 | u8 *p; | |
444 | ||
445 | if ((unsigned int)y >= LCD_TEXT_HEIGHT || (unsigned int)x >= LCD_TEXT_WIDTH) | |
446 | return; | |
447 | ||
448 | p = &sw_screen[y * VIDEO_FONT_HEIGHT * LCD_BYTE_WIDTH + x * VIDEO_FONT_BYTE_WIDTH]; | |
449 | ||
450 | while (--size >= 0) { | |
451 | ||
452 | for (i = 0; i < VIDEO_FONT_HEIGHT; i++) { | |
453 | for (j = 0; j < VIDEO_FONT_BYTE_WIDTH; j++, p++) | |
454 | *p = ~*p; | |
455 | p += LCD_BYTE_WIDTH - VIDEO_FONT_BYTE_WIDTH; | |
456 | } | |
457 | p -= (LCD_BYTE_LINESZ - VIDEO_FONT_BYTE_WIDTH); | |
458 | ||
459 | if (x >= LCD_TEXT_WIDTH) | |
460 | break; | |
461 | x++; | |
462 | } | |
463 | } | |
464 | ||
465 | void sed156x_scroll_line(void) | |
466 | { | |
467 | memmove(&sw_screen[0], | |
468 | &sw_screen[LCD_BYTE_LINESZ], | |
469 | LCD_BYTE_WIDTH * (LCD_HEIGHT - VIDEO_FONT_HEIGHT)); | |
470 | } | |
471 | ||
472 | void sed156x_scroll(int dx, int dy) | |
473 | { | |
474 | u8 *p1 = NULL, *p2 = NULL, *p3 = NULL; /* pacify gcc */ | |
475 | int adx, ady, i, sz; | |
476 | ||
477 | adx = dx > 0 ? dx : -dx; | |
478 | ady = dy > 0 ? dy : -dy; | |
479 | ||
480 | /* overscroll? erase everything */ | |
481 | if (adx >= LCD_TEXT_WIDTH || ady >= LCD_TEXT_HEIGHT) { | |
482 | memset(sw_screen, 0, sizeof(sw_screen)); | |
483 | return; | |
484 | } | |
485 | ||
486 | sz = LCD_BYTE_LINESZ * ady; | |
487 | if (dy > 0) { | |
488 | p1 = &sw_screen[0]; | |
489 | p2 = &sw_screen[sz]; | |
490 | p3 = &sw_screen[LCD_BYTE_WIDTH * LCD_HEIGHT - sz]; | |
491 | } else if (dy < 0) { | |
492 | p1 = &sw_screen[sz]; | |
493 | p2 = &sw_screen[0]; | |
494 | p3 = &sw_screen[0]; | |
495 | } | |
496 | ||
497 | if (ady > 0) { | |
498 | memmove(p1, p2, LCD_BYTE_WIDTH * LCD_HEIGHT - sz); | |
499 | memset(p3, 0, sz); | |
500 | } | |
501 | ||
502 | sz = VIDEO_FONT_BYTE_WIDTH * adx; | |
503 | if (dx > 0) { | |
504 | p1 = &sw_screen[0]; | |
505 | p2 = &sw_screen[0] + sz; | |
506 | p3 = &sw_screen[0] + LCD_BYTE_WIDTH - sz; | |
507 | } else if (dx < 0) { | |
508 | p1 = &sw_screen[0] + sz; | |
509 | p2 = &sw_screen[0]; | |
510 | p3 = &sw_screen[0]; | |
511 | } | |
512 | ||
513 | /* xscroll */ | |
514 | if (adx > 0) { | |
515 | for (i = 0; i < LCD_HEIGHT; i++) { | |
516 | memmove(p1, p2, LCD_BYTE_WIDTH - sz); | |
517 | memset(p3, 0, sz); | |
518 | p1 += LCD_BYTE_WIDTH; | |
519 | p2 += LCD_BYTE_WIDTH; | |
520 | p3 += LCD_BYTE_WIDTH; | |
521 | } | |
522 | } | |
523 | } | |
524 | ||
525 | void sed156x_init(void) | |
526 | { | |
527 | int i; | |
528 | ||
529 | SED156X_CS(1); | |
530 | SED156X_A0(1); | |
531 | ||
532 | /* Send initialization commands to the LCD */ | |
533 | sed156x_cmd_transfer(LCD_OFF); /* Turn display OFF */ | |
534 | sed156x_cmd_transfer(LCD_BIAS); /* set the LCD Bias, */ | |
535 | sed156x_cmd_transfer(LCD_ADCMODE); /* ADC mode, */ | |
536 | sed156x_cmd_transfer(LCD_COMDIR); /* common output mode, */ | |
537 | sed156x_cmd_transfer(LCD_RESRT | LCD_RRATIO); /* resistor ratio, */ | |
538 | sed156x_cmd_transfer(LCD_EVSET); /* electronic volume, */ | |
539 | sed156x_cmd_transfer(LCD_CNTRST); | |
540 | sed156x_cmd_transfer(LCD_PWRMD | LCD_POWERM); /* and power mode */ | |
541 | sed156x_cmd_transfer(LCD_PADDR | 0); /* cursor home */ | |
542 | sed156x_cmd_transfer(LCD_CADRH | 0); | |
543 | sed156x_cmd_transfer(LCD_CADRL | 0); | |
544 | sed156x_cmd_transfer(LCD_LADDR | 0); /* and display start line */ | |
545 | sed156x_cmd_transfer(LCD_DSP_NRM); /* LCD display Normal */ | |
546 | ||
547 | /* clear everything */ | |
548 | memset(sw_screen, 0, sizeof(sw_screen)); | |
549 | memset(hw_screen, 0, sizeof(hw_screen)); | |
550 | memset(last_hw_screen, 0, sizeof(last_hw_screen)); | |
551 | ||
552 | for (i = 0; i < LCD_PAGES; i++) { | |
553 | sed156x_cmd_transfer(LCD_PADDR | i); | |
554 | sed156x_cmd_transfer(LCD_CADRH | 0); | |
555 | sed156x_cmd_transfer(LCD_CADRL | 0); | |
556 | sed156x_data_block_transfer(&hw_screen[i][0], LCD_COLUMNS); | |
557 | } | |
558 | ||
559 | sed156x_clear(); | |
560 | sed156x_sync(); | |
561 | sed156x_cmd_transfer(LCD_ON); /* Turn display ON */ | |
562 | } |