]>
Commit | Line | Data |
---|---|---|
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 | ||
31 | #ifdef CONFIG_SED156X | |
32 | ||
33 | /* configure according to the selected display */ | |
34 | #if defined(CONFIG_SED156X_PG12864Q) | |
35 | #define LCD_WIDTH 128 | |
36 | #define LCD_HEIGHT 64 | |
37 | #define LCD_LINES 64 | |
38 | #define LCD_PAGES 9 | |
39 | #define LCD_COLUMNS 132 | |
40 | #else | |
41 | #error Unsupported SED156x configuration | |
42 | #endif | |
43 | ||
44 | /* include the font data */ | |
45 | #include <video_font.h> | |
46 | ||
47 | #if VIDEO_FONT_WIDTH != 8 || VIDEO_FONT_HEIGHT != 16 | |
48 | #error Expecting VIDEO_FONT_WIDTH == 8 && VIDEO_FONT_HEIGHT == 16 | |
49 | #endif | |
50 | ||
51 | #define LCD_BYTE_WIDTH (LCD_WIDTH / 8) | |
52 | #define VIDEO_FONT_BYTE_WIDTH (VIDEO_FONT_WIDTH / 8) | |
53 | ||
54 | #define LCD_TEXT_WIDTH (LCD_WIDTH / VIDEO_FONT_WIDTH) | |
55 | #define LCD_TEXT_HEIGHT (LCD_HEIGHT / VIDEO_FONT_HEIGHT) | |
56 | ||
57 | #define LCD_BYTE_LINESZ (LCD_BYTE_WIDTH * VIDEO_FONT_HEIGHT) | |
58 | ||
59 | const int sed156x_text_width = LCD_TEXT_WIDTH; | |
60 | const int sed156x_text_height = LCD_TEXT_HEIGHT; | |
61 | ||
62 | /**************************************************************************************/ | |
63 | ||
64 | #define SED156X_SPI_RXD() (SED156X_SPI_RXD_PORT & SED156X_SPI_RXD_MASK) | |
65 | ||
66 | #define SED156X_SPI_TXD(x) \ | |
67 | do { \ | |
68 | if (x) \ | |
69 | SED156X_SPI_TXD_PORT |= SED156X_SPI_TXD_MASK; \ | |
70 | else \ | |
71 | SED156X_SPI_TXD_PORT &= ~SED156X_SPI_TXD_MASK; \ | |
72 | } while(0) | |
73 | ||
74 | #define SED156X_SPI_CLK(x) \ | |
75 | do { \ | |
76 | if (x) \ | |
77 | SED156X_SPI_CLK_PORT |= SED156X_SPI_CLK_MASK; \ | |
78 | else \ | |
79 | SED156X_SPI_CLK_PORT &= ~SED156X_SPI_CLK_MASK; \ | |
80 | } while(0) | |
81 | ||
82 | #define SED156X_SPI_CLK_TOGGLE() (SED156X_SPI_CLK_PORT ^= SED156X_SPI_CLK_MASK) | |
83 | ||
84 | #define SED156X_SPI_BIT_DELAY() /* no delay */ | |
85 | ||
86 | #define SED156X_CS(x) \ | |
87 | do { \ | |
88 | if (x) \ | |
89 | SED156X_CS_PORT |= SED156X_CS_MASK; \ | |
90 | else \ | |
91 | SED156X_CS_PORT &= ~SED156X_CS_MASK; \ | |
92 | } while(0) | |
93 | ||
94 | #define SED156X_A0(x) \ | |
95 | do { \ | |
96 | if (x) \ | |
97 | SED156X_A0_PORT |= SED156X_A0_MASK; \ | |
98 | else \ | |
99 | SED156X_A0_PORT &= ~SED156X_A0_MASK; \ | |
100 | } while(0) | |
101 | ||
102 | /**************************************************************************************/ | |
103 | ||
104 | /*** LCD Commands ***/ | |
105 | ||
106 | #define LCD_ON 0xAF /* Display ON */ | |
107 | #define LCD_OFF 0xAE /* Display OFF */ | |
108 | #define LCD_LADDR 0x40 /* Display start line set + (6-bit) address */ | |
109 | #define LCD_PADDR 0xB0 /* Page address set + (4-bit) page */ | |
110 | #define LCD_CADRH 0x10 /* Column address set upper + (4-bit) column hi */ | |
111 | #define LCD_CADRL 0x00 /* Column address set lower + (4-bit) column lo */ | |
112 | #define LCD_ADC_NRM 0xA0 /* ADC select Normal */ | |
113 | #define LCD_ADC_REV 0xA1 /* ADC select Reverse */ | |
114 | #define LCD_DSP_NRM 0xA6 /* LCD display Normal */ | |
115 | #define LCD_DSP_REV 0xA7 /* LCD display Reverse */ | |
116 | #define LCD_DPT_NRM 0xA4 /* Display all points Normal */ | |
117 | #define LCD_DPT_ALL 0xA5 /* Display all points ON */ | |
118 | #define LCD_BIAS9 0xA2 /* LCD bias set 1/9 */ | |
119 | #define LCD_BIAS7 0xA3 /* LCD bias set 1/7 */ | |
120 | #define LCD_CAINC 0xE0 /* Read/modify/write */ | |
121 | #define LCD_CAEND 0xEE /* End */ | |
122 | #define LCD_RESET 0xE2 /* Reset */ | |
123 | #define LCD_C_NRM 0xC0 /* Common output mode select Normal direction */ | |
124 | #define LCD_C_RVS 0xC8 /* Common output mode select Reverse direction */ | |
125 | #define LCD_PWRMD 0x28 /* Power control set + (3-bit) mode */ | |
126 | #define LCD_RESRT 0x20 /* V5 v. reg. int. resistor ratio set + (3-bit) ratio */ | |
127 | #define LCD_EVSET 0x81 /* Electronic volume mode set + byte = (6-bit) volume */ | |
128 | #define LCD_SIOFF 0xAC /* Static indicator OFF */ | |
129 | #define LCD_SION 0xAD /* Static indicator ON + byte = (2-bit) mode */ | |
130 | #define LCD_NOP 0xE3 /* NOP */ | |
131 | #define LCD_TEST 0xF0 /* Test/Test mode reset (Note: *DO NOT USE*) */ | |
132 | ||
133 | /*------------------------------------------------------------------------------- | |
134 | Compound commands | |
135 | ------------------------------------------------------------------------------- | |
136 | Command Description Commands | |
137 | ---------- ------------------------ ------------------------------------- | |
138 | POWS_ON POWER SAVER ON command LCD_OFF, LCD_D_ALL | |
139 | POWS_OFF POWER SAVER OFF command LCD_D_NRM | |
140 | SLEEPON SLEEP mode LCD_SIOFF, POWS_ON | |
141 | SLEEPOFF SLEEP mode cancel LCD_D_NRM, LCD_SION, LCD_SIS_??? | |
142 | STDBYON STAND BY mode LCD_SION, POWS_ON | |
143 | STDBYOFF STAND BY mode cancel LCD_D_NRM | |
144 | -------------------------------------------------------------------------------*/ | |
145 | ||
146 | /*** LCD various parameters ***/ | |
147 | #define LCD_PPB 8 /* Pixels per byte (display is B/W, 1 bit per pixel) */ | |
148 | ||
149 | /*** LCD Status byte masks ***/ | |
150 | #define LCD_S_BUSY 0x80 /* Status Read - BUSY mask */ | |
151 | #define LCD_S_ADC 0x40 /* Status Read - ADC mask */ | |
152 | #define LCD_S_ONOFF 0x20 /* Status Read - ON/OFF mask */ | |
153 | #define LCD_S_RESET 0x10 /* Status Read - RESET mask */ | |
154 | ||
155 | /*** LCD commands parameter masks ***/ | |
156 | #define LCD_M_LADDR 0x3F /* Display start line (6-bit) address mask */ | |
157 | #define LCD_M_PADDR 0x0F /* Page address (4-bit) page mask */ | |
158 | #define LCD_M_CADRH 0x0F /* Column address upper (4-bit) column hi mask */ | |
159 | #define LCD_M_CADRL 0x0F /* Column address lower (4-bit) column lo mask */ | |
160 | #define LCD_M_PWRMD 0x07 /* Power control (3-bit) mode mask */ | |
161 | #define LCD_M_RESRT 0x07 /* V5 v. reg. int. resistor ratio (3-bit) ratio mask */ | |
162 | #define LCD_M_EVSET 0x3F /* Electronic volume mode byte (6-bit) volume mask */ | |
163 | #define LCD_M_SION 0x03 /* Static indicator ON (2-bit) mode mask */ | |
164 | ||
165 | /*** LCD Power control cirquits control masks ***/ | |
166 | #define LCD_PWRBSTR 0x04 /* Power control mode - Booster cirquit ON */ | |
167 | #define LCD_PWRVREG 0x02 /* Power control mode - Voltage regulator cirquit ON */ | |
168 | #define LCD_PWRVFOL 0x01 /* Power control mode - Voltage follower cirquit ON */ | |
169 | ||
170 | /*** LCD Static indicator states ***/ | |
171 | #define LCD_SIS_OFF 0x00 /* Static indicator register set - OFF state */ | |
172 | #define LCD_SIS_BL 0x01 /* Static indicator register set - 1s blink state */ | |
173 | #define LCD_SIS_RBL 0x02 /* Static indicator register set - .5s rapid blink state */ | |
174 | #define LCD_SIS_ON 0x03 /* Static indicator register set - constantly on state */ | |
175 | ||
176 | /*** LCD functions special parameters (commands) ***/ | |
177 | #define LCD_PREVP 0x80 /* Page number for moving to previous */ | |
178 | #define LCD_NEXTP 0x81 /* or next page */ | |
179 | #define LCD_ERR_P 0xFF /* Error in page number */ | |
180 | ||
181 | /*** LCD initialization settings ***/ | |
182 | #define LCD_BIAS LCD_BIAS9 /* Bias: 1/9 */ | |
183 | #define LCD_ADCMODE LCD_ADC_NRM /* ADC mode: normal */ | |
184 | #define LCD_COMDIR LCD_C_NRM /* Common output mode: normal */ | |
185 | #define LCD_RRATIO 0 /* Resistor ratio: 0 */ | |
186 | #define LCD_CNTRST 0x1C /* electronic volume: 1Ch */ | |
187 | #define LCD_POWERM (LCD_PWRBSTR | LCD_PWRVREG | LCD_PWRVFOL) /* Power mode: All on */ | |
188 | ||
189 | /**************************************************************************************/ | |
190 | ||
191 | static inline unsigned int sed156x_transfer(unsigned int val) | |
192 | { | |
193 | unsigned int rx; | |
194 | int b; | |
195 | ||
196 | rx = 0; b = 8; | |
197 | while (--b >= 0) { | |
198 | SED156X_SPI_TXD(val & 0x80); | |
199 | val <<= 1; | |
200 | SED156X_SPI_CLK_TOGGLE(); | |
201 | SED156X_SPI_BIT_DELAY(); | |
202 | rx <<= 1; | |
203 | if (SED156X_SPI_RXD()) | |
204 | rx |= 1; | |
205 | SED156X_SPI_CLK_TOGGLE(); | |
206 | SED156X_SPI_BIT_DELAY(); | |
207 | } | |
208 | ||
209 | return rx; | |
210 | } | |
211 | ||
212 | unsigned int sed156x_data_transfer(unsigned int val) | |
213 | { | |
214 | unsigned int rx; | |
215 | ||
216 | SED156X_SPI_CLK(1); | |
217 | SED156X_CS(0); | |
218 | SED156X_A0(1); | |
219 | ||
220 | rx = sed156x_transfer(val); | |
221 | ||
222 | SED156X_CS(1); | |
223 | ||
224 | return rx; | |
225 | } | |
226 | ||
227 | void sed156x_data_block_transfer(const u8 *p, int size) | |
228 | { | |
229 | SED156X_SPI_CLK(1); | |
230 | SED156X_CS(0); | |
231 | SED156X_A0(1); | |
232 | ||
233 | while (--size >= 0) | |
234 | sed156x_transfer(*p++); | |
235 | ||
236 | SED156X_CS(1); | |
237 | } | |
238 | ||
239 | unsigned int sed156x_cmd_transfer(unsigned int val) | |
240 | { | |
241 | unsigned int rx; | |
242 | ||
243 | SED156X_SPI_CLK(1); | |
244 | SED156X_CS(0); | |
245 | SED156X_A0(0); | |
246 | ||
247 | rx = sed156x_transfer(val); | |
248 | ||
249 | SED156X_CS(1); | |
250 | SED156X_A0(1); | |
251 | ||
252 | return rx; | |
253 | } | |
254 | ||
255 | /******************************************************************************/ | |
256 | ||
257 | static u8 hw_screen[LCD_PAGES][LCD_COLUMNS]; | |
258 | static u8 last_hw_screen[LCD_PAGES][LCD_COLUMNS]; | |
259 | static u8 sw_screen[LCD_BYTE_WIDTH * LCD_HEIGHT]; | |
260 | ||
261 | void sed156x_sync(void) | |
262 | { | |
263 | int i, j, last_page; | |
264 | u8 *d; | |
265 | const u8 *s, *e, *b, *r; | |
266 | u8 v0, v1, v2, v3, v4, v5, v6, v7; | |
267 | ||
268 | /* copy and rotate sw_screen to hw_screen */ | |
269 | for (i = 0; i < LCD_HEIGHT / 8; i++) { | |
270 | ||
271 | d = &hw_screen[i][0]; | |
272 | s = &sw_screen[LCD_BYTE_WIDTH * 8 * i + LCD_BYTE_WIDTH - 1]; | |
273 | ||
274 | for (j = 0; j < LCD_WIDTH / 8; j++) { | |
275 | ||
276 | v0 = s[0 * LCD_BYTE_WIDTH]; | |
277 | v1 = s[1 * LCD_BYTE_WIDTH]; | |
278 | v2 = s[2 * LCD_BYTE_WIDTH]; | |
279 | v3 = s[3 * LCD_BYTE_WIDTH]; | |
280 | v4 = s[4 * LCD_BYTE_WIDTH]; | |
281 | v5 = s[5 * LCD_BYTE_WIDTH]; | |
282 | v6 = s[6 * LCD_BYTE_WIDTH]; | |
283 | v7 = s[7 * LCD_BYTE_WIDTH]; | |
284 | ||
285 | d[0] = ((v7 & 0x01) << 7) | | |
286 | ((v6 & 0x01) << 6) | | |
287 | ((v5 & 0x01) << 5) | | |
288 | ((v4 & 0x01) << 4) | | |
289 | ((v3 & 0x01) << 3) | | |
290 | ((v2 & 0x01) << 2) | | |
291 | ((v1 & 0x01) << 1) | | |
292 | (v0 & 0x01) ; | |
293 | ||
294 | d[1] = ((v7 & 0x02) << 6) | | |
295 | ((v6 & 0x02) << 5) | | |
296 | ((v5 & 0x02) << 4) | | |
297 | ((v4 & 0x02) << 3) | | |
298 | ((v3 & 0x02) << 2) | | |
299 | ((v2 & 0x02) << 1) | | |
300 | ((v1 & 0x02) << 0) | | |
301 | ((v0 & 0x02) >> 1) ; | |
302 | ||
303 | d[2] = ((v7 & 0x04) << 5) | | |
304 | ((v6 & 0x04) << 4) | | |
305 | ((v5 & 0x04) << 3) | | |
306 | ((v4 & 0x04) << 2) | | |
307 | ((v3 & 0x04) << 1) | | |
308 | (v2 & 0x04) | | |
309 | ((v1 & 0x04) >> 1) | | |
310 | ((v0 & 0x04) >> 2) ; | |
311 | ||
312 | d[3] = ((v7 & 0x08) << 4) | | |
313 | ((v6 & 0x08) << 3) | | |
314 | ((v5 & 0x08) << 2) | | |
315 | ((v4 & 0x08) << 1) | | |
316 | (v3 & 0x08) | | |
317 | ((v2 & 0x08) >> 1) | | |
318 | ((v1 & 0x08) >> 2) | | |
319 | ((v0 & 0x08) >> 3) ; | |
320 | ||
321 | d[4] = ((v7 & 0x10) << 3) | | |
322 | ((v6 & 0x10) << 2) | | |
323 | ((v5 & 0x10) << 1) | | |
324 | (v4 & 0x10) | | |
325 | ((v3 & 0x10) >> 1) | | |
326 | ((v2 & 0x10) >> 2) | | |
327 | ((v1 & 0x10) >> 3) | | |
328 | ((v0 & 0x10) >> 4) ; | |
329 | ||
330 | d[5] = ((v7 & 0x20) << 2) | | |
331 | ((v6 & 0x20) << 1) | | |
332 | (v5 & 0x20) | | |
333 | ((v4 & 0x20) >> 1) | | |
334 | ((v3 & 0x20) >> 2) | | |
335 | ((v2 & 0x20) >> 3) | | |
336 | ((v1 & 0x20) >> 4) | | |
337 | ((v0 & 0x20) >> 5) ; | |
338 | ||
339 | d[6] = ((v7 & 0x40) << 1) | | |
340 | (v6 & 0x40) | | |
341 | ((v5 & 0x40) >> 1) | | |
342 | ((v4 & 0x40) >> 2) | | |
343 | ((v3 & 0x40) >> 3) | | |
344 | ((v2 & 0x40) >> 4) | | |
345 | ((v1 & 0x40) >> 5) | | |
346 | ((v0 & 0x40) >> 6) ; | |
347 | ||
348 | d[7] = (v7 & 0x80) | | |
349 | ((v6 & 0x80) >> 1) | | |
350 | ((v5 & 0x80) >> 2) | | |
351 | ((v4 & 0x80) >> 3) | | |
352 | ((v3 & 0x80) >> 4) | | |
353 | ((v2 & 0x80) >> 5) | | |
354 | ((v1 & 0x80) >> 6) | | |
355 | ((v0 & 0x80) >> 7) ; | |
356 | ||
357 | d += 8; | |
358 | s--; | |
359 | } | |
360 | } | |
361 | ||
362 | /* and now output only the differences */ | |
363 | for (i = 0; i < LCD_PAGES; i++) { | |
364 | ||
365 | b = &hw_screen[i][0]; | |
366 | e = &hw_screen[i][LCD_COLUMNS]; | |
367 | ||
368 | d = &last_hw_screen[i][0]; | |
369 | s = b; | |
370 | ||
371 | last_page = -1; | |
372 | ||
373 | /* update only the differences */ | |
374 | do { | |
375 | while (s < e && *s == *d) { | |
376 | s++; | |
377 | d++; | |
378 | } | |
379 | if (s == e) | |
380 | break; | |
381 | r = s; | |
382 | while (s < e && *s != *d) | |
383 | *d++ = *s++; | |
384 | ||
385 | j = r - b; | |
386 | ||
387 | if (i != last_page) { | |
388 | sed156x_cmd_transfer(LCD_PADDR | i); | |
389 | last_page = i; | |
390 | } | |
391 | ||
392 | sed156x_cmd_transfer(LCD_CADRH | ((j >> 4) & 0x0F)); | |
393 | sed156x_cmd_transfer(LCD_CADRL | (j & 0x0F)); | |
394 | sed156x_data_block_transfer(r, s - r); | |
395 | ||
396 | } while (s < e); | |
397 | } | |
398 | ||
399 | /******** | |
400 | for (i = 0; i < LCD_PAGES; i++) { | |
401 | sed156x_cmd_transfer(LCD_PADDR | i); | |
402 | sed156x_cmd_transfer(LCD_CADRH | 0); | |
403 | sed156x_cmd_transfer(LCD_CADRL | 0); | |
404 | sed156x_data_block_transfer(&hw_screen[i][0], LCD_COLUMNS); | |
405 | } | |
406 | memcpy(last_hw_screen, hw_screen, sizeof(last_hw_screen)); | |
407 | ********/ | |
408 | } | |
409 | ||
410 | void sed156x_clear(void) | |
411 | { | |
412 | memset(sw_screen, 0, sizeof(sw_screen)); | |
413 | } | |
414 | ||
415 | void sed156x_output_at(int x, int y, const char *str, int size) | |
416 | { | |
417 | int i, j; | |
418 | u8 *p; | |
419 | const u8 *s; | |
420 | ||
421 | if ((unsigned int)y >= LCD_TEXT_HEIGHT || (unsigned int)x >= LCD_TEXT_WIDTH) | |
422 | return; | |
423 | ||
424 | p = &sw_screen[y * VIDEO_FONT_HEIGHT * LCD_BYTE_WIDTH + x * VIDEO_FONT_BYTE_WIDTH]; | |
425 | ||
426 | while (--size >= 0) { | |
427 | ||
428 | s = &video_fontdata[((int)*str++ & 0xff) * VIDEO_FONT_BYTE_WIDTH * VIDEO_FONT_HEIGHT]; | |
429 | for (i = 0; i < VIDEO_FONT_HEIGHT; i++) { | |
430 | for (j = 0; j < VIDEO_FONT_BYTE_WIDTH; j++) | |
431 | *p++ = *s++; | |
432 | p += LCD_BYTE_WIDTH - VIDEO_FONT_BYTE_WIDTH; | |
433 | } | |
434 | p -= (LCD_BYTE_LINESZ - VIDEO_FONT_BYTE_WIDTH); | |
435 | ||
436 | if (x >= LCD_TEXT_WIDTH) | |
437 | break; | |
438 | x++; | |
439 | } | |
440 | } | |
441 | ||
442 | void sed156x_reverse_at(int x, int y, int size) | |
443 | { | |
444 | int i, j; | |
445 | u8 *p; | |
446 | ||
447 | if ((unsigned int)y >= LCD_TEXT_HEIGHT || (unsigned int)x >= LCD_TEXT_WIDTH) | |
448 | return; | |
449 | ||
450 | p = &sw_screen[y * VIDEO_FONT_HEIGHT * LCD_BYTE_WIDTH + x * VIDEO_FONT_BYTE_WIDTH]; | |
451 | ||
452 | while (--size >= 0) { | |
453 | ||
454 | for (i = 0; i < VIDEO_FONT_HEIGHT; i++) { | |
455 | for (j = 0; j < VIDEO_FONT_BYTE_WIDTH; j++, p++) | |
456 | *p = ~*p; | |
457 | p += LCD_BYTE_WIDTH - VIDEO_FONT_BYTE_WIDTH; | |
458 | } | |
459 | p -= (LCD_BYTE_LINESZ - VIDEO_FONT_BYTE_WIDTH); | |
460 | ||
461 | if (x >= LCD_TEXT_WIDTH) | |
462 | break; | |
463 | x++; | |
464 | } | |
465 | } | |
466 | ||
467 | void sed156x_scroll_line(void) | |
468 | { | |
469 | memmove(&sw_screen[0], | |
470 | &sw_screen[LCD_BYTE_LINESZ], | |
471 | LCD_BYTE_WIDTH * (LCD_HEIGHT - VIDEO_FONT_HEIGHT)); | |
472 | } | |
473 | ||
474 | void sed156x_scroll(int dx, int dy) | |
475 | { | |
476 | u8 *p1 = NULL, *p2 = NULL, *p3 = NULL; /* pacify gcc */ | |
477 | int adx, ady, i, sz; | |
478 | ||
479 | adx = dx > 0 ? dx : -dx; | |
480 | ady = dy > 0 ? dy : -dy; | |
481 | ||
482 | /* overscroll? erase everything */ | |
483 | if (adx >= LCD_TEXT_WIDTH || ady >= LCD_TEXT_HEIGHT) { | |
484 | memset(sw_screen, 0, sizeof(sw_screen)); | |
485 | return; | |
486 | } | |
487 | ||
488 | sz = LCD_BYTE_LINESZ * ady; | |
489 | if (dy > 0) { | |
490 | p1 = &sw_screen[0]; | |
491 | p2 = &sw_screen[sz]; | |
492 | p3 = &sw_screen[LCD_BYTE_WIDTH * LCD_HEIGHT - sz]; | |
493 | } else if (dy < 0) { | |
494 | p1 = &sw_screen[sz]; | |
495 | p2 = &sw_screen[0]; | |
496 | p3 = &sw_screen[0]; | |
497 | } | |
498 | ||
499 | if (ady > 0) { | |
500 | memmove(p1, p2, LCD_BYTE_WIDTH * LCD_HEIGHT - sz); | |
501 | memset(p3, 0, sz); | |
502 | } | |
503 | ||
504 | sz = VIDEO_FONT_BYTE_WIDTH * adx; | |
505 | if (dx > 0) { | |
506 | p1 = &sw_screen[0]; | |
507 | p2 = &sw_screen[0] + sz; | |
508 | p3 = &sw_screen[0] + LCD_BYTE_WIDTH - sz; | |
509 | } else if (dx < 0) { | |
510 | p1 = &sw_screen[0] + sz; | |
511 | p2 = &sw_screen[0]; | |
512 | p3 = &sw_screen[0]; | |
513 | } | |
514 | ||
515 | /* xscroll */ | |
516 | if (adx > 0) { | |
517 | for (i = 0; i < LCD_HEIGHT; i++) { | |
518 | memmove(p1, p2, LCD_BYTE_WIDTH - sz); | |
519 | memset(p3, 0, sz); | |
520 | p1 += LCD_BYTE_WIDTH; | |
521 | p2 += LCD_BYTE_WIDTH; | |
522 | p3 += LCD_BYTE_WIDTH; | |
523 | } | |
524 | } | |
525 | } | |
526 | ||
527 | void sed156x_init(void) | |
528 | { | |
529 | int i; | |
530 | ||
531 | SED156X_CS(1); | |
532 | SED156X_A0(1); | |
533 | ||
534 | /* Send initialization commands to the LCD */ | |
535 | sed156x_cmd_transfer(LCD_OFF); /* Turn display OFF */ | |
536 | sed156x_cmd_transfer(LCD_BIAS); /* set the LCD Bias, */ | |
537 | sed156x_cmd_transfer(LCD_ADCMODE); /* ADC mode, */ | |
538 | sed156x_cmd_transfer(LCD_COMDIR); /* common output mode, */ | |
539 | sed156x_cmd_transfer(LCD_RESRT | LCD_RRATIO); /* resistor ratio, */ | |
540 | sed156x_cmd_transfer(LCD_EVSET); /* electronic volume, */ | |
541 | sed156x_cmd_transfer(LCD_CNTRST); | |
542 | sed156x_cmd_transfer(LCD_PWRMD | LCD_POWERM); /* and power mode */ | |
543 | sed156x_cmd_transfer(LCD_PADDR | 0); /* cursor home */ | |
544 | sed156x_cmd_transfer(LCD_CADRH | 0); | |
545 | sed156x_cmd_transfer(LCD_CADRL | 0); | |
546 | sed156x_cmd_transfer(LCD_LADDR | 0); /* and display start line */ | |
547 | sed156x_cmd_transfer(LCD_DSP_NRM); /* LCD display Normal */ | |
548 | ||
549 | /* clear everything */ | |
550 | memset(sw_screen, 0, sizeof(sw_screen)); | |
551 | memset(hw_screen, 0, sizeof(hw_screen)); | |
552 | memset(last_hw_screen, 0, sizeof(last_hw_screen)); | |
553 | ||
554 | for (i = 0; i < LCD_PAGES; i++) { | |
555 | sed156x_cmd_transfer(LCD_PADDR | i); | |
556 | sed156x_cmd_transfer(LCD_CADRH | 0); | |
557 | sed156x_cmd_transfer(LCD_CADRL | 0); | |
558 | sed156x_data_block_transfer(&hw_screen[i][0], LCD_COLUMNS); | |
559 | } | |
560 | ||
561 | sed156x_clear(); | |
562 | sed156x_sync(); | |
563 | sed156x_cmd_transfer(LCD_ON); /* Turn display ON */ | |
564 | } | |
565 | ||
566 | #endif /* CONFIG_SED156X */ |