summaryrefslogtreecommitdiff
path: root/firmware/target/arm/samsung/yh925/lcd-yh925.c
diff options
context:
space:
mode:
Diffstat (limited to 'firmware/target/arm/samsung/yh925/lcd-yh925.c')
-rw-r--r--firmware/target/arm/samsung/yh925/lcd-yh925.c638
1 files changed, 638 insertions, 0 deletions
diff --git a/firmware/target/arm/samsung/yh925/lcd-yh925.c b/firmware/target/arm/samsung/yh925/lcd-yh925.c
new file mode 100644
index 0000000000..8afcf58bea
--- /dev/null
+++ b/firmware/target/arm/samsung/yh925/lcd-yh925.c
@@ -0,0 +1,638 @@
1/***************************************************************************
2 * __________ __ ___.
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
7 * \/ \/ \/ \/ \/
8 * $Id$
9 *
10 * Copyright (C) 2006 by Barry Wardell
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
16 *
17 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
18 * KIND, either express or implied.
19 *
20 ****************************************************************************/
21#include "config.h"
22#include "cpu.h"
23#include "lcd.h"
24#include "kernel.h"
25#include "system.h"
26
27/** Initialized in lcd_init_device() **/
28/* Is the power turned on? */
29static bool power_on;
30/* Is the display turned on? */
31static bool display_on;
32/* Amount of vertical offset. Used for flip offset correction/detection. */
33static int y_offset;
34/* Reverse flag. Must be remembered when display is turned off. */
35static unsigned short disp_control_rev;
36/* Contrast setting << 8 */
37static int lcd_contrast;
38
39static unsigned lcd_yuv_options SHAREDBSS_ATTR = 0;
40
41/* Forward declarations */
42#if defined(HAVE_LCD_ENABLE) || defined(HAVE_LCD_SLEEP)
43static void lcd_display_off(void);
44#endif
45
46/* register defines for the Renesas HD66773R */
47#define R_START_OSC 0x00
48#define R_DEVICE_CODE_READ 0x00
49#define R_DRV_OUTPUT_CONTROL 0x01
50#define R_DRV_AC_CONTROL 0x02
51#define R_POWER_CONTROL1 0x03
52#define R_POWER_CONTROL2 0x04
53#define R_ENTRY_MODE 0x05
54#define R_COMPARE_REG 0x06
55#define R_DISP_CONTROL 0x07
56#define R_FRAME_CYCLE_CONTROL 0x0b
57#define R_POWER_CONTROL3 0x0c
58#define R_POWER_CONTROL4 0x0d
59#define R_POWER_CONTROL5 0x0e
60#define R_GATE_SCAN_START_POS 0x0f
61#define R_VERT_SCROLL_CONTROL 0x11
62#define R_1ST_SCR_DRV_POS 0x14
63#define R_2ND_SCR_DRV_POS 0x15
64#define R_HORIZ_RAM_ADDR_POS 0x16
65#define R_VERT_RAM_ADDR_POS 0x17
66#define R_RAM_WRITE_DATA_MASK 0x20
67#define R_RAM_ADDR_SET 0x21
68#define R_WRITE_DATA_2_GRAM 0x22
69#define R_RAM_READ_DATA 0x22
70#define R_GAMMA_FINE_ADJ_POS1 0x30
71#define R_GAMMA_FINE_ADJ_POS2 0x31
72#define R_GAMMA_FINE_ADJ_POS3 0x32
73#define R_GAMMA_GRAD_ADJ_POS 0x33
74#define R_GAMMA_FINE_ADJ_NEG1 0x34
75#define R_GAMMA_FINE_ADJ_NEG2 0x35
76#define R_GAMMA_FINE_ADJ_NEG3 0x36
77#define R_GAMMA_GRAD_ADJ_NEG 0x37
78#define R_GAMMA_AMP_ADJ_POS 0x3a
79#define R_GAMMA_AMP_ADJ_NEG 0x3b
80
81static inline void lcd_wait_write(void)
82{
83 while (LCD2_PORT & LCD2_BUSY_MASK);
84}
85
86/* Send command */
87static inline void lcd_send_cmd(unsigned cmd)
88{
89 lcd_wait_write();
90 LCD2_PORT = LCD2_CMD_MASK; /* Send MSB first (should always be 0) */
91 lcd_wait_write();
92 LCD2_PORT = LCD2_CMD_MASK | cmd;
93}
94
95/* Send 16-bit data */
96static inline void lcd_send_data(unsigned data)
97{
98 lcd_wait_write();
99 LCD2_PORT = (data >> 8) | LCD2_DATA_MASK; /* Send MSB first */
100 lcd_wait_write();
101 LCD2_PORT = (data & 0xff) | LCD2_DATA_MASK;
102}
103
104/* Send 16-bit data byte-swapped. Only needed until we can use block transfer. */
105static inline void lcd_send_data_swapped(unsigned v)
106{
107 lcd_wait_write();
108 LCD2_PORT = LCD2_DATA_MASK | (v & 0xff); /* Send LSB first */
109 LCD2_PORT = LCD2_DATA_MASK | (v >> 8);
110}
111
112/* Write value to register */
113static void lcd_write_reg(int reg, int val)
114{
115 lcd_send_cmd(reg);
116 lcd_send_data(val);
117}
118
119/*** hardware configuration ***/
120
121int lcd_default_contrast(void)
122{
123 return DEFAULT_CONTRAST_SETTING;
124}
125
126void lcd_set_contrast(int val)
127{
128 /* Clamp val in range 0-14, 16-30 */
129 if (val < 1)
130 val = 0;
131 else if (val <= 15)
132 --val;
133 else if (val > 30)
134 val = 30;
135
136 lcd_contrast = val << 8;
137
138 if (!power_on)
139 return;
140
141 /* VCOMG=1, VDV4-0=xxxxx, VCM4-0=11000 */
142 lcd_write_reg(R_POWER_CONTROL5, 0x2018 | lcd_contrast);
143}
144
145void lcd_set_invert_display(bool yesno)
146{
147 if (yesno == (disp_control_rev == 0x0000))
148 return;
149
150 disp_control_rev = yesno ? 0x0000 : 0x0004;
151
152 if (!display_on)
153 return;
154
155 /* PT1-0=00, VLE2-1=00, SPT=0, GON=1, DTE=1, REV=x, D1-0=11 */
156 lcd_write_reg(R_DISP_CONTROL, 0x0033 | disp_control_rev);
157}
158
159
160/* turn the display upside down (call lcd_update() afterwards) */
161void lcd_set_flip(bool yesno)
162{
163 /* NOT MODIFIED FOR THE YH-925 */
164
165 if (yesno == (y_offset != 0))
166 return;
167
168 /* The LCD controller is 132x160 while the LCD itself is 128x160, so we need
169 * to shift the origin by 4 when we flip the LCD */
170 y_offset = yesno ? 4 : 0;
171
172 if (!power_on)
173 return;
174
175 /* SCN4-0=000x0 (G1/G160) */
176 lcd_write_reg(R_GATE_SCAN_START_POS, yesno ? 0x0002 : 0x0000);
177 /* SM=0, GS=x, SS=x, NL4-0=10011 (G1-G160) */
178 lcd_write_reg(R_DRV_OUTPUT_CONTROL, yesno ? 0x0213 : 0x0113);
179}
180
181/* LCD init */
182void lcd_init_device(void)
183{
184#if 0
185 /* This is the OF LCD init */
186 int i;
187
188 DEV_EN2 |= 0x2000;
189 DEV_INIT1 |= 0xfc000000;
190 CLCD_CLOCK_SRC &= ~0xf;
191 DEV_INIT2 &= ~0x400;
192
193 GPIOF_ENABLE |= 0x4;
194 GPIOF_OUTPUT_EN |= 0x4;
195 GPIOF_OUTPUT_VAL &= ~0x4;
196 udelay(300000);
197 GPIOF_OUTPUT_VAL |= 0x4;
198
199 outl(0x220, 0x70008a00);
200 outl(0x1f00, 0x70008a04);
201 LCD2_BLOCK_CTRL = 0x10008080;
202 LCD2_BLOCK_CONFIG = 0xf00000;
203 udelay(100000);
204
205 for (i = 0; i < 8; i++)
206 {
207 lcd_send_data(0);
208 udelay(1);
209 }
210
211 lcd_write_reg(R_START_OSC, 0x0001);
212 udelay(20000);
213 lcd_write_reg(R_DRV_OUTPUT_CONTROL, 0x0315);
214 lcd_write_reg(R_DRV_AC_CONTROL, 0x0700);
215 lcd_write_reg(R_ENTRY_MODE, 0x1028);
216 lcd_write_reg(R_COMPARE_REG, 0x0000);
217 lcd_write_reg(R_FRAME_CYCLE_CONTROL, 0x4008);
218 lcd_write_reg(R_RAM_ADDR_SET, 0x0000);
219 lcd_write_reg(R_GAMMA_FINE_ADJ_POS1, 0x0700);
220 lcd_write_reg(R_GAMMA_FINE_ADJ_POS2, 0x0000);
221 lcd_write_reg(R_GAMMA_FINE_ADJ_POS3, 0x0000);
222 lcd_write_reg(R_GAMMA_GRAD_ADJ_POS, 0x0100);
223 lcd_write_reg(R_GAMMA_FINE_ADJ_NEG1, 0x0707);
224 lcd_write_reg(R_GAMMA_FINE_ADJ_NEG2, 0x0007);
225 lcd_write_reg(R_GAMMA_FINE_ADJ_NEG3, 0x0700);
226 lcd_write_reg(R_GAMMA_GRAD_ADJ_NEG, 0x0001);
227 lcd_write_reg(R_GATE_SCAN_START_POS, 0x0000);
228 lcd_write_reg(R_VERT_SCROLL_CONTROL, 0x0000);
229 lcd_write_reg(R_1ST_SCR_DRV_POS, 0xaf10);
230 lcd_write_reg(R_2ND_SCR_DRV_POS, 0x0000);
231 lcd_write_reg(R_HORIZ_RAM_ADDR_POS, 0x7f00); /* ((LCD_HEIGHT - 1) << 8 | 0 */
232 lcd_write_reg(R_VERT_RAM_ADDR_POS, 0xaf10); /* ((LCD_WIDTH + 16 - 1) << 8) | 16 */
233 lcd_write_reg(R_GAMMA_AMP_ADJ_POS, 0x1600);
234 lcd_write_reg(R_GAMMA_AMP_ADJ_NEG, 0x0006);
235 lcd_write_reg(R_DISP_CONTROL, 0x0104);
236 lcd_write_reg(R_POWER_CONTROL4, 0x0100);
237 lcd_write_reg(R_POWER_CONTROL5, 0x0d18);
238 lcd_write_reg(R_POWER_CONTROL3, 0x0000);
239 udelay(50000);
240 lcd_write_reg(R_POWER_CONTROL1, 0x0008);
241 lcd_write_reg(R_POWER_CONTROL3, 0x0000);
242 lcd_write_reg(R_POWER_CONTROL2, 0x0000);
243 udelay(50000);
244 lcd_write_reg(R_POWER_CONTROL5, 0x2d18);
245 lcd_write_reg(R_POWER_CONTROL3, 0x0000);
246 udelay(50000);
247 lcd_write_reg(R_POWER_CONTROL4, 0x0110);
248 //~ lcd_clear_display();
249 lcd_write_reg(R_DISP_CONTROL, 0x0105);
250 udelay(20000);
251 lcd_write_reg(R_DISP_CONTROL, 0x0125);
252 lcd_write_reg(R_DISP_CONTROL, 0x0127);
253 udelay(20000);
254 lcd_write_reg(R_DISP_CONTROL, 0x0137);
255 lcd_send_cmd(R_WRITE_DATA_2_GRAM);
256
257 GPIOF_ENABLE |= 0x02;
258 GPIOF_OUTPUT_EN |= 0x02;
259 GPIOF_OUTPUT_VAL |= 0x02;
260#endif
261
262#ifndef BOOTLOADER
263 /* The OF won't boot if this is done in the bootloader - ideally we should
264 tweak the lcd controller speed settings but this will do for now */
265 CLCD_CLOCK_SRC |= 0xc0000000; /* Set LCD interface clock to PLL */
266#endif
267
268 /* only these bits are needed from the OF init */
269 lcd_write_reg(R_DRV_OUTPUT_CONTROL, 0x0215);
270 lcd_write_reg(R_ENTRY_MODE, 0x1028);
271
272 power_on = true;
273 display_on = true;
274 y_offset = 0;
275 disp_control_rev = 0x0004;
276 lcd_contrast = DEFAULT_CONTRAST_SETTING << 8;
277}
278
279/* THE SLEEP AND POWER FUNCTIONS HAVE NOT BEEN MODIFIED FOR THE YH-925 */
280
281#ifdef HAVE_LCD_SLEEP
282static void lcd_power_on(void)
283{
284 /* Be sure standby bit is clear. */
285 /* BT2-0=000, DC2-0=000, AP2-0=000, SLP=0, STB=0 */
286 lcd_write_reg(R_POWER_CONTROL1, 0x0000);
287
288 /** Power ON Sequence **/
289 /* Per datasheet Rev.1.10, Jun.21.2003, p. 99 */
290
291 lcd_write_reg(R_START_OSC, 0x0001); /* Start Oscillation */
292 /* 10ms or more for oscillation circuit to stabilize */
293 sleep(HZ/50);
294 /* Instruction (1) for power setting; VC2-0, VRH3-0, CAD,
295 VRL3-0, VCM4-0, VDV4-0 */
296 /* VC2-0=001 */
297 lcd_write_reg(R_POWER_CONTROL3, 0x0001);
298 /* VRL3-0=0100, PON=0, VRH3-0=0001 */
299 lcd_write_reg(R_POWER_CONTROL4, 0x0401);
300 /* CAD=1 */
301 lcd_write_reg(R_POWER_CONTROL2, 0x8000);
302 /* VCOMG=0, VDV4-0=xxxxx (19), VCM4-0=11000 */
303 lcd_write_reg(R_POWER_CONTROL5, 0x0018 | lcd_contrast);
304 /* Instruction (2) for power setting; BT2-0, DC2-0, AP2-0 */
305 /* BT2-0=000, DC2-0=001, AP2-0=011, SLP=0, STB=0 */
306 lcd_write_reg(R_POWER_CONTROL1, 0x002c);
307 /* Instruction (3) for power setting; VCOMG = "1" */
308 /* VCOMG=1, VDV4-0=xxxxx (19), VCM4-0=11000 */
309 lcd_write_reg(R_POWER_CONTROL5, 0x2018 | lcd_contrast);
310
311 /* 40ms or more; time for step-up circuits 1,2 to stabilize */
312 sleep(HZ/25);
313
314 /* Instruction (4) for power setting; PON = "1" */
315 /* VRL3-0=0100, PON=1, VRH3-0=0001 */
316 lcd_write_reg(R_POWER_CONTROL4, 0x0411);
317
318 /* 40ms or more; time for step-up circuit 4 to stabilize */
319 sleep(HZ/25);
320
321 /* Instructions for other mode settings (in register order). */
322 /* SM=0, GS=x, SS=0, NL4-0=10011 (G1-G160)*/
323 lcd_write_reg(R_DRV_OUTPUT_CONTROL, y_offset ? 0x0013 : 0x0113); /* different to X5 */
324 /* FLD1-0=01 (1 field), B/C=1, EOR=1 (C-pat), NW5-0=000000 (1 row) */
325 lcd_write_reg(R_DRV_AC_CONTROL, 0x0700);
326 /* DIT=0, BGR=1, HWM=0, I/D1-0=10, AM=1, LG2-0=000 */
327 lcd_write_reg(R_ENTRY_MODE, 0x1028); /* different to X5 */
328 /* CP15-0=0000000000000000 */
329 lcd_write_reg(R_COMPARE_REG, 0x0000);
330 /* NO1-0=01, SDT1-0=00, EQ1-0=00, DIV1-0=00, RTN3-00000 */
331 lcd_write_reg(R_FRAME_CYCLE_CONTROL, 0x4000);
332 /* SCN4-0=000x0 (G1/G160) */
333/* lcd_write_reg(R_GATE_SCAN_START_POS, y_offset ? 0x0000 : 0x0002); */
334 /* VL7-0=0x00 */
335 lcd_write_reg(R_VERT_SCROLL_CONTROL, 0x0000);
336 /* SE17-10(End)=0x9f (159), SS17-10(Start)=0x00 */
337 lcd_write_reg(R_1ST_SCR_DRV_POS, 0x9f00);
338 /* SE27-20(End)=0x5c (92), SS27-20(Start)=0x00 */
339 lcd_write_reg(R_2ND_SCR_DRV_POS, 0x5c00);
340 /* HEA7-0=7f, HSA7-0=00 */
341 lcd_write_reg(R_HORIZ_RAM_ADDR_POS, 0x7f00);
342 /* PKP12-10=0x0, PKP02-00=0x0 */
343 lcd_write_reg(R_GAMMA_FINE_ADJ_POS1, 0x0003);
344 /* PKP32-30=0x4, PKP22-20=0x0 */
345 lcd_write_reg(R_GAMMA_FINE_ADJ_POS2, 0x0400);
346 /* PKP52-50=0x4, PKP42-40=0x7 */
347 lcd_write_reg(R_GAMMA_FINE_ADJ_POS3, 0x0407);
348 /* PRP12-10=0x3, PRP02-00=0x5 */
349 lcd_write_reg(R_GAMMA_GRAD_ADJ_POS, 0x0305);
350 /* PKN12-10=0x0, PKN02-00=0x3 */
351 lcd_write_reg(R_GAMMA_FINE_ADJ_NEG1, 0x0003);
352 /* PKN32-30=0x7, PKN22-20=0x4 */
353 lcd_write_reg(R_GAMMA_FINE_ADJ_NEG2, 0x0704);
354 /* PKN52-50=0x4, PRN42-40=0x7 */
355 lcd_write_reg(R_GAMMA_FINE_ADJ_NEG3, 0x0407);
356 /* PRN12-10=0x5, PRN02-00=0x3 */
357 lcd_write_reg(R_GAMMA_GRAD_ADJ_NEG, 0x0503);
358 /* VRP14-10=0x14, VRP03-00=0x09 */
359 lcd_write_reg(R_GAMMA_AMP_ADJ_POS, 0x1409);
360 /* VRN14-00=0x06, VRN03-00=0x02 */
361 lcd_write_reg(R_GAMMA_AMP_ADJ_NEG, 0x0602);
362
363 /* 100ms or more; time for step-up circuits to stabilize */
364 sleep(HZ/10);
365
366 power_on = true;
367}
368
369static void lcd_power_off(void)
370{
371 /* Display must be off first */
372 if (display_on)
373 lcd_display_off();
374
375 power_on = false;
376
377 /** Power OFF sequence **/
378 /* Per datasheet Rev.1.10, Jun.21.2003, p. 99 */
379
380 /* Step-up1 halt setting bit */
381 /* BT2-0=110, DC2-0=001, AP2-0=011, SLP=0, STB=0 */
382 lcd_write_reg(R_POWER_CONTROL1, 0x062c);
383 /* Step-up3,4 halt setting bit */
384 /* VRL3-0=0100, PON=0, VRH3-0=0001 */
385 lcd_write_reg(R_POWER_CONTROL4, 0x0401);
386 /* VCOMG=0, VDV4-0=10011, VCM4-0=11000 */
387 lcd_write_reg(R_POWER_CONTROL5, 0x0018 | lcd_contrast);
388
389 /* Wait 100ms or more */
390 sleep(HZ/10);
391
392 /* Step-up2,amp halt setting bit */
393 /* BT2-0=000, DC2-0=000, AP2-0=000, SLP=0, STB=0 */
394 lcd_write_reg(R_POWER_CONTROL1, 0x0000);
395}
396
397void lcd_sleep(void)
398{
399 if (power_on)
400 lcd_power_off();
401
402 /* Set standby mode */
403 /* BT2-0=000, DC2-0=000, AP2-0=000, SLP=0, STB=1 */
404 lcd_write_reg(R_POWER_CONTROL1, 0x0001);
405}
406#endif
407
408#if defined(HAVE_LCD_ENABLE) || defined(HAVE_LCD_SLEEP)
409static void lcd_display_off(void)
410{
411 display_on = false;
412
413 /** Display OFF sequence **/
414 /* Per datasheet Rev.1.10, Jun.21.2003, p. 97 */
415
416 /* EQ1-0=00 already */
417
418 /* PT1-0=00, VLE2-1=00, SPT=0, GON=1, DTE=1, REV=x, D1-0=10 */
419 lcd_write_reg(R_DISP_CONTROL, 0x0032 | disp_control_rev);
420
421 sleep(HZ/25); /* Wait 2 frames or more */
422
423 /* PT1-0=00, VLE2-1=00, SPT=0, GON=1, DTE=0, REV=x, D1-0=10 */
424 lcd_write_reg(R_DISP_CONTROL, 0x0022 | disp_control_rev);
425
426 sleep(HZ/25); /* Wait 2 frames or more */
427
428 /* PT1-0=00, VLE2-1=00, SPT=0, GON=0, DTE=0, REV=0, D1-0=00 */
429 lcd_write_reg(R_DISP_CONTROL, 0x0000);
430}
431#endif
432
433#if defined(HAVE_LCD_ENABLE)
434static void lcd_display_on(void)
435{
436 /* Be sure power is on first */
437 if (!power_on)
438 lcd_power_on();
439
440 /** Display ON Sequence **/
441 /* Per datasheet Rev.1.10, Jun.21.2003, p. 97 */
442
443 /* PT1-0=00, VLE2-1=00, SPT=0, GON=0, DTE=0, REV=0, D1-0=01 */
444 lcd_write_reg(R_DISP_CONTROL, 0x0001);
445
446 sleep(HZ/25); /* Wait 2 frames or more */
447
448 /* PT1-0=00, VLE2-1=00, SPT=0, GON=1, DTE=0, REV=x, D1-0=01 */
449 lcd_write_reg(R_DISP_CONTROL, 0x0021 | disp_control_rev);
450 /* PT1-0=00, VLE2-1=00, SPT=0, GON=1, DTE=0, REV=x, D1-0=11 */
451 lcd_write_reg(R_DISP_CONTROL, 0x0023 | disp_control_rev);
452
453 sleep(HZ/25); /* Wait 2 frames or more */
454
455 /* PT1-0=00, VLE2-1=00, SPT=0, GON=1, DTE=1, REV=x, D1-0=11 */
456 lcd_write_reg(R_DISP_CONTROL, 0x0033 | disp_control_rev);
457
458 display_on = true;
459}
460
461void lcd_enable(bool on)
462{
463 if (on == display_on)
464 return;
465
466 if (on)
467 {
468 lcd_display_on();
469 /* Probably out of sync and we don't wanna pepper the code with
470 lcd_update() calls for this. */
471 lcd_update();
472 lcd_activation_call_hook();
473 }
474 else
475 {
476 lcd_display_off();
477 }
478}
479#endif
480
481#if defined(HAVE_LCD_ENABLE) || defined(HAVE_LCD_SLEEP)
482bool lcd_active(void)
483{
484 return display_on;
485}
486#endif
487
488/*** update functions ***/
489
490void lcd_yuv_set_options(unsigned options)
491{
492 lcd_yuv_options = options;
493}
494
495/* Line write helper function for lcd_yuv_blit. Write two lines of yuv420. */
496extern void lcd_write_yuv420_lines(unsigned char const * const src[3],
497 int width,
498 int stride);
499extern void lcd_write_yuv420_lines_odither(unsigned char const * const src[3],
500 int width,
501 int stride,
502 int x_screen, /* To align dither pattern */
503 int y_screen);
504
505/* Performance function to blit a YUV bitmap directly to the LCD */
506void lcd_blit_yuv(unsigned char * const src[3],
507 int src_x, int src_y, int stride,
508 int x, int y, int width, int height)
509{
510 const unsigned char *yuv_src[3];
511 const unsigned char *ysrc_max;
512 int y0;
513 int options;
514
515 /* NOT MODIFIED FOR THE YH-925 */
516
517 if (!display_on)
518 return;
519
520 width &= ~1;
521 height &= ~1;
522
523 /* calculate the drawing region */
524
525 /* The 20GB LCD is actually 128x160 but rotated 90 degrees so the origin
526 * is actually the bottom left and horizontal and vertical are swapped.
527 * Rockbox expects the origin to be the top left so we need to use
528 * 127 - y instead of just y */
529
530 /* max vert << 8 | start vert */
531 lcd_write_reg(R_VERT_RAM_ADDR_POS, ((x + width - 1) << 8) | x);
532
533 y0 = LCD_HEIGHT - 1 - y + y_offset;
534
535 /* DIT=0, BGR=1, HWM=0, I/D1-0=10, AM=0, LG2-0=000 */
536 lcd_write_reg(R_ENTRY_MODE, 0x1020);
537
538 yuv_src[0] = src[0] + src_y * stride + src_x;
539 yuv_src[1] = src[1] + (src_y * stride >> 2) + (src_x >> 1);
540 yuv_src[2] = src[2] + (yuv_src[1] - src[1]);
541 ysrc_max = yuv_src[0] + height * stride;
542
543 options = lcd_yuv_options;
544
545 do
546 {
547 /* max horiz << 8 | start horiz */
548 lcd_write_reg(R_HORIZ_RAM_ADDR_POS, (y0 << 8) | (y0 - 1));
549
550 /* position cursor (set AD0-AD15) */
551 /* start vert << 8 | start horiz */
552 lcd_write_reg(R_RAM_ADDR_SET, (x << 8) | y0);
553
554 /* start drawing */
555 lcd_send_cmd(R_WRITE_DATA_2_GRAM);
556
557 if (options & LCD_YUV_DITHER)
558 {
559 lcd_write_yuv420_lines_odither(yuv_src, width, stride,
560 x, y);
561 y -= 2;
562 }
563 else
564 {
565 lcd_write_yuv420_lines(yuv_src, width, stride);
566 }
567
568 y0 -= 2;
569 yuv_src[0] += stride << 1;
570 yuv_src[1] += stride >> 1;
571 yuv_src[2] += stride >> 1;
572 }
573 while (yuv_src[0] < ysrc_max);
574
575 /* DIT=0, BGR=1, HWM=0, I/D1-0=10, AM=1, LG2-0=000 */
576 lcd_write_reg(R_ENTRY_MODE, 0x1028);
577}
578
579
580/* Update a fraction of the display. */
581void lcd_update_rect(int x0, int y0, int width, int height)
582{
583 int x1, y1;
584 int lcd_x0, lcd_x1, lcd_y0, lcd_y1;
585 unsigned short *addr;
586
587 if (!display_on)
588 return;
589
590 /* calculate the drawing region */
591 y1 = (y0 + height) - 1; /* max vert */
592 x1 = (x0 + width) - 1; /* max horiz */
593
594 if(x1 >= LCD_WIDTH)
595 x1 = LCD_WIDTH - 1;
596 if (x1 <= 0)
597 return; /* nothing left to do, 0 is harmful to lcd_write_data() */
598 if(y1 >= LCD_HEIGHT)
599 y1 = LCD_HEIGHT-1;
600
601 /* The LCD is actually 128x160 rotated 90 degrees */
602 lcd_x0 = (LCD_HEIGHT - 1) - y1 + 4;
603 lcd_x1 = (LCD_HEIGHT - 1) - y0 + 4;
604 lcd_y0 = x0 + 16;
605 lcd_y1 = x1 + 16;
606
607 /* set the drawing window */
608 lcd_write_reg(R_HORIZ_RAM_ADDR_POS, (lcd_x1 << 8) | lcd_x0);
609 lcd_write_reg(R_VERT_RAM_ADDR_POS, (lcd_y1 << 8) | lcd_y0);
610
611 /* set the starting position */
612 lcd_write_reg(R_RAM_ADDR_SET, (lcd_y0 << 8) | lcd_x1);
613
614 /* start drawing */
615 lcd_send_cmd(R_WRITE_DATA_2_GRAM);
616
617 addr = (unsigned short*)&lcd_framebuffer[y0][x0];
618
619 int c, r;
620
621 /* for each row */
622 for (r = 0; r < height; r++) {
623 /* for each column */
624 for (c = 0; c < width; c++) {
625 /* output 1 pixel */
626 lcd_send_data(*addr++);
627 }
628
629 addr += (LCD_WIDTH - width);
630 }
631}
632
633/* Update the display.
634 This must be called after all other LCD functions that change the display. */
635void lcd_update(void)
636{
637 lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT);
638}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-05 00:14:41 +0000