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-rw-r--r--firmware/target/arm/as3525/lcd-as-e200v2-fuze.S501
-rw-r--r--firmware/target/arm/as3525/sansa-e200v2/lcd-e200v2.c99
-rw-r--r--firmware/target/arm/as3525/sansa-fuze/lcd-fuze.c121
3 files changed, 674 insertions, 47 deletions
diff --git a/firmware/target/arm/as3525/lcd-as-e200v2-fuze.S b/firmware/target/arm/as3525/lcd-as-e200v2-fuze.S
new file mode 100644
index 0000000000..254816cd0e
--- /dev/null
+++ b/firmware/target/arm/as3525/lcd-as-e200v2-fuze.S
@@ -0,0 +1,501 @@
1/***************************************************************************
2 * __________ __ ___.
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
7 * \/ \/ \/ \/ \/
8 * $Id$
9 *
10 * Copyright (C) 2007 by Jens Arnold
11 * Heavily based on lcd-as-memframe.c by Michael Sevakis
12 * Adapted for Sansa Fuze/e200v2 by Rafaël Carré
13 *
14 * This program is free software; you can redistribute it and/or
15 * modify it under the terms of the GNU General Public License
16 * as published by the Free Software Foundation; either version 2
17 * of the License, or (at your option) any later version.
18 *
19 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
20 * KIND, either express or implied.
21 *
22 ****************************************************************************/
23
24#include "config.h"
25#include "cpu.h"
26
27#define DBOP_BUSY (1<<10)
28
29/****************************************************************************
30 * void lcd_write_yuv_420_lines(unsigned char const * const src[3],
31 * int width,
32 * int stride);
33 *
34 * |R| |1.000000 -0.000001 1.402000| |Y'|
35 * |G| = |1.000000 -0.334136 -0.714136| |Pb|
36 * |B| |1.000000 1.772000 0.000000| |Pr|
37 * Scaled, normalized, rounded and tweaked to yield RGB 565:
38 * |R| |74 0 101| |Y' - 16| >> 9
39 * |G| = |74 -24 -51| |Cb - 128| >> 8
40 * |B| |74 128 0| |Cr - 128| >> 9
41 *
42 * Write four RGB565 pixels in the following order on each loop:
43 * 1 3 + > down
44 * 2 4 \/ left
45 */
46 .section .icode, "ax", %progbits
47 .align 2
48 .global lcd_write_yuv420_lines
49 .type lcd_write_yuv420_lines, %function
50lcd_write_yuv420_lines:
51 @ r0 = yuv_src
52 @ r1 = width
53 @ r2 = stride
54 stmfd sp!, { r4-r12 } @ save non-scratch
55 ldmia r0, { r4, r5, r6 } @ r4 = yuv_src[0] = Y'_p
56 @ r5 = yuv_src[1] = Cb_p
57 @ r6 = yuv_src[2] = Cr_p
58 @ r0 = scratch
59 sub r2, r2, #1 @
60 mov r3, #0xC8000000 @
61 orr r3, r3, #0x120000 @ r3 = DBOP_BASE
6210: @ loop line @
63 ldrb r7, [r4], #1 @ r7 = *Y'_p++;
64 ldrb r8, [r5], #1 @ r8 = *Cb_p++;
65 ldrb r9, [r6], #1 @ r9 = *Cr_p++;
66 @
67 sub r7, r7, #16 @ r7 = Y = (Y' - 16)*74
68 add r12, r7, r7, asl #2 @ actually (Y' - 16)*37 and shift right
69 add r7, r12, r7, asl #5 @ by one less when adding - same for all
70 @
71 sub r8, r8, #128 @ Cb -= 128
72 sub r9, r9, #128 @ Cr -= 128
73 @
74 add r10, r9, r9, asl #1 @ r10 = Cr*51 + Cb*24
75 add r10, r10, r10, asl #4 @
76 add r10, r10, r8, asl #3 @
77 add r10, r10, r8, asl #4 @
78 @
79 add r11, r9, r9, asl #2 @ r9 = Cr*101
80 add r11, r11, r9, asl #5 @
81 add r9, r11, r9, asl #6 @
82 @
83 add r8, r8, #2 @ r8 = bu = (Cb*128 + 128) >> 8
84 mov r8, r8, asr #2 @
85 add r9, r9, #256 @ r9 = rv = (r9 + 256) >> 9
86 mov r9, r9, asr #9 @
87 rsb r10, r10, #128 @ r10 = guv = (-r10 + 128) >> 8
88 mov r10, r10, asr #8 @
89 @ compute R, G, and B
90 add r0, r8, r7, asr #8 @ r0 = b = (Y >> 9) + bu
91 add r11, r9, r7, asr #8 @ r11 = r = (Y >> 9) + rv
92 add r7, r10, r7, asr #7 @ r7 = g = (Y >> 8) + guv
93 @
94 orr r12, r0, r11 @ check if clamping is needed...
95 orr r12, r12, r7, asr #1 @ ...at all
96 cmp r12, #31 @
97 bls 15f @ no clamp @
98 cmp r0, #31 @ clamp b
99 mvnhi r0, r0, asr #31 @
100 andhi r0, r0, #31 @
101 cmp r11, #31 @ clamp r
102 mvnhi r11, r11, asr #31 @
103 andhi r11, r11, #31 @
104 cmp r7, #63 @ clamp g
105 mvnhi r7, r7, asr #31 @
106 andhi r7, r7, #63 @
10715: @ no clamp @
108 @
109 ldrb r12, [r4, r2] @ r12 = Y' = *(Y'_p + stride)
110 @
111 orr r0, r0, r11, lsl #11 @ r0 = (r << 11) | b
112 orr r0, r0, r7, lsl #5 @ r0 = (r << 11) | (g << 5) | b
113 strh r0, [r3, #0x10] @ write pixel
1141: @ busy @
115 ldr r7, [r3,#0xc] @ r7 = DBOP_STATUS
116 tst r7, #DBOP_BUSY @ fifo not empty?
117 beq 1b @
118 @
119 sub r7, r12, #16 @ r7 = Y = (Y' - 16)*74
120 add r12, r7, r7, asl #2 @
121 add r7, r12, r7, asl #5 @
122 @ compute R, G, and B
123 add r0, r8, r7, asr #8 @ r0 = b = (Y >> 9) + bu
124 add r11, r9, r7, asr #8 @ r11 = r = (Y >> 9) + rv
125 add r7, r10, r7, asr #7 @ r7 = g = (Y >> 8) + guv
126 @
127 orr r12, r0, r11 @ check if clamping is needed...
128 orr r12, r12, r7, asr #1 @ ...at all
129 cmp r12, #31 @
130 bls 15f @ no clamp @
131 cmp r0, #31 @ clamp b
132 mvnhi r0, r0, asr #31 @
133 andhi r0, r0, #31 @
134 cmp r11, #31 @ clamp r
135 mvnhi r11, r11, asr #31 @
136 andhi r11, r11, #31 @
137 cmp r7, #63 @ clamp g
138 mvnhi r7, r7, asr #31 @
139 andhi r7, r7, #63 @
14015: @ no clamp @
141 @
142 ldrb r12, [r4], #1 @ r12 = Y' = *(Y'_p++)
143 @
144 orr r0, r0, r11, lsl #11 @ r0 = (r << 11) | b
145 orr r0, r0, r7, lsl #5 @ r0 = (r << 11) | (g << 5) | b
146 strh r0, [r3, #0x10] @ write pixel
1471: @ busy @
148 ldr r7, [r3,#0xc] @ r7 = DBOP_STATUS
149 tst r7, #DBOP_BUSY @ fifo not empty?
150 beq 1b @
151 @
152 sub r7, r12, #16 @ r7 = Y = (Y' - 16)*74
153 add r12, r7, r7, asl #2 @
154 add r7, r12, r7, asl #5 @
155 @ compute R, G, and B
156 add r0, r8, r7, asr #8 @ r0 = b = (Y >> 9) + bu
157 add r11, r9, r7, asr #8 @ r11 = r = (Y >> 9) + rv
158 add r7, r10, r7, asr #7 @ r7 = g = (Y >> 8) + guv
159 @
160 orr r12, r0, r11 @ check if clamping is needed...
161 orr r12, r12, r7, asr #1 @ ...at all
162 cmp r12, #31 @
163 bls 15f @ no clamp @
164 cmp r0, #31 @ clamp b
165 mvnhi r0, r0, asr #31 @
166 andhi r0, r0, #31 @
167 cmp r11, #31 @ clamp r
168 mvnhi r11, r11, asr #31 @
169 andhi r11, r11, #31 @
170 cmp r7, #63 @ clamp g
171 mvnhi r7, r7, asr #31 @
172 andhi r7, r7, #63 @
17315: @ no clamp @
174 @
175 ldrb r12, [r4, r2] @ r12 = Y' = *(Y'_p + stride)
176 @
177 @
178 orr r0, r0, r11, lsl #11 @ r0 = (r << 11) | b
179 orr r0, r0, r7, lsl #5 @ r0 = (r << 11) | (g << 5) | b
180 strh r0, [r3, #0x10] @ write pixel
1811: @ busy @
182 ldr r7, [r3,#0xc] @ r7 = DBOP_STATUS
183 tst r7, #DBOP_BUSY @ fifo not empty?
184 beq 1b @
185 @
186 sub r7, r12, #16 @ r7 = Y = (Y' - 16)*74
187 add r12, r7, r7, asl #2 @
188 add r7, r12, r7, asl #5 @
189 @ compute R, G, and B
190 add r0, r8, r7, asr #8 @ r0 = b = (Y >> 9) + bu
191 add r11, r9, r7, asr #8 @ r11 = r = (Y >> 9) + rv
192 add r7, r10, r7, asr #7 @ r7 = g = (Y >> 8) + guv
193 @
194 orr r12, r0, r11 @ check if clamping is needed...
195 orr r12, r12, r7, asr #1 @ ...at all
196 cmp r12, #31 @
197 bls 15f @ no clamp @
198 cmp r0, #31 @ clamp b
199 mvnhi r0, r0, asr #31 @
200 andhi r0, r0, #31 @
201 cmp r11, #31 @ clamp r
202 mvnhi r11, r11, asr #31 @
203 andhi r11, r11, #31 @
204 cmp r7, #63 @ clamp g
205 mvnhi r7, r7, asr #31 @
206 andhi r7, r7, #63 @
20715: @ no clamp @
208 @
209 orr r0, r0, r11, lsl #11 @ r0 = (r << 11) | b
210 orr r0, r0, r7, lsl #5 @ r0 = (r << 11) | (g << 5) | b
211 strh r0, [r3, #0x10] @ write pixel
2121: @ busy @
213 ldr r7, [r3,#0xc] @ r7 = DBOP_STATUS
214 tst r7, #DBOP_BUSY @ fifo not empty?
215 beq 1b @
216 @
217 subs r1, r1, #2 @ subtract block from width
218 bgt 10b @ loop line @
219 @
220 ldmfd sp!, { r4-r12 } @ restore registers and return
221 bx lr @
222 .ltorg @ dump constant pool
223 .size lcd_write_yuv420_lines, .-lcd_write_yuv420_lines
224
225/****************************************************************************
226 * void lcd_write_yuv_420_lines_odither(unsigned char const * const src[3],
227 * int width,
228 * int stride,
229 * int x_screen,
230 * int y_screen);
231 *
232 * |R| |1.000000 -0.000001 1.402000| |Y'|
233 * |G| = |1.000000 -0.334136 -0.714136| |Pb|
234 * |B| |1.000000 1.772000 0.000000| |Pr|
235 * Red scaled at twice g & b but at same precision to place it in correct
236 * bit position after multiply and leave instruction count lower.
237 * |R| |258 0 408| |Y' - 16|
238 * |G| = |149 -49 -104| |Cb - 128|
239 * |B| |149 258 0| |Cr - 128|
240 *
241 * Write four RGB565 pixels in the following order on each loop:
242 * 1 3 + > down
243 * 2 4 \/ left
244 *
245 * Kernel pattern (raw|rotated|use order):
246 * 5 3 4 2 2 6 3 7 row0 row2 > down
247 * 1 7 0 6 | 4 0 5 1 | 2 4 6 0 3 5 7 1 col0 left
248 * 4 2 5 3 | 3 7 2 6 | 3 5 7 1 2 4 6 0 col2 \/
249 * 0 6 1 7 5 1 4 0
250 */
251 .section .icode, "ax", %progbits
252 .align 2
253 .global lcd_write_yuv420_lines_odither
254 .type lcd_write_yuv420_lines_odither, %function
255lcd_write_yuv420_lines_odither:
256 @ r0 = yuv_src
257 @ r1 = width
258 @ r2 = stride
259 @ r3 = x_screen
260 @ [sp] = y_screen
261 stmfd sp!, { r4-r12, lr } @ save non-scratch
262 ldmia r0, { r4, r5, r6 } @ r4 = yuv_src[0] = Y'_p
263 @ r5 = yuv_src[1] = Cb_p
264 @ r6 = yuv_src[2] = Cr_p
265 @
266 sub r2, r2, #1 @
267 ldr r14, [sp, #40] @ Line up pattern and kernel quadrant
268 eor r14, r14, r3 @
269 and r14, r14, #0x2 @
270 mov r14, r14, lsl #6 @ 0x00 or 0x80
271 mov r3, #0xC8000000 @
272 orr r3, r3, #0x120000 @ r3 = DBOP_BASE
27310: @ loop line @
274 @
275 ldrb r7, [r4], #1 @ r7 = *Y'_p++;
276 ldrb r8, [r5], #1 @ r8 = *Cb_p++;
277 ldrb r9, [r6], #1 @ r9 = *Cr_p++;
278 @
279 eor r14, r14, #0x80 @ flip pattern quadrant
280 @
281 sub r7, r7, #16 @ r7 = Y = (Y' - 16)*149
282 add r12, r7, r7, asl #2 @
283 add r12, r12, r12, asl #4 @
284 add r7, r12, r7, asl #6 @
285 @
286 sub r8, r8, #128 @ Cb -= 128
287 sub r9, r9, #128 @ Cr -= 128
288 @
289 add r10, r8, r8, asl #4 @ r10 = guv = Cr*104 + Cb*49
290 add r10, r10, r8, asl #5 @
291 add r10, r10, r9, asl #3 @
292 add r10, r10, r9, asl #5 @
293 add r10, r10, r9, asl #6 @
294 @
295 mov r8, r8, asl #1 @ r8 = bu = Cb*258
296 add r8, r8, r8, asl #7 @
297 @
298 add r9, r9, r9, asl #1 @ r9 = rv = Cr*408
299 add r9, r9, r9, asl #4 @
300 mov r9, r9, asl #3 @
301 @
302 @ compute R, G, and B
303 add r0, r8, r7 @ r0 = b' = Y + bu
304 add r11, r9, r7, asl #1 @ r11 = r' = Y*2 + rv
305 rsb r7, r10, r7 @ r7 = g' = Y + guv
306 @
307 @ r8 = bu, r9 = rv, r10 = guv
308 @
309 sub r12, r0, r0, lsr #5 @ r0 = 31/32*b + b/256
310 add r0, r12, r0, lsr #8 @
311 @
312 sub r12, r11, r11, lsr #5 @ r11 = 31/32*r + r/256
313 add r11, r12, r11, lsr #8 @
314 @
315 sub r12, r7, r7, lsr #6 @ r7 = 63/64*g + g/256
316 add r7, r12, r7, lsr #8 @
317 @
318 add r12, r14, #0x100 @
319 @
320 add r0, r0, r12 @ b = r0 + delta
321 add r11, r11, r12, lsl #1 @ r = r11 + delta*2
322 add r7, r7, r12, lsr #1 @ g = r7 + delta/2
323 @
324 orr r12, r0, r11, asr #1 @ check if clamping is needed...
325 orr r12, r12, r7 @ ...at all
326 movs r12, r12, asr #15 @
327 beq 15f @ no clamp @
328 movs r12, r0, asr #15 @ clamp b
329 mvnne r0, r12, lsr #15 @
330 andne r0, r0, #0x7c00 @ mask b only if clamped
331 movs r12, r11, asr #16 @ clamp r
332 mvnne r11, r12, lsr #16 @
333 movs r12, r7, asr #15 @ clamp g
334 mvnne r7, r12, lsr #15 @
33515: @ no clamp @
336 @
337 ldrb r12, [r4, r2] @ r12 = Y' = *(Y'_p + stride)
338 @
339 and r11, r11, #0xf800 @ pack pixel
340 and r7, r7, #0x7e00 @ r0 = pixel = (r & 0xf800) |
341 orr r11, r11, r7, lsr #4 @ ((g & 0x7e00) >> 4) |
342 orr r0, r11, r0, lsr #10 @ (b >> 10)
343 strh r0, [r3, #0x10] @ write pixel
3441: @ busy @
345 ldr r7, [r3,#0xc] @ r7 = DBOP_STATUS
346 tst r7, #DBOP_BUSY @ fifo not empty?
347 beq 1b @
348 @
349 sub r7, r12, #16 @ r7 = Y = (Y' - 16)*149
350 add r12, r7, r7, asl #2 @
351 add r12, r12, r12, asl #4 @
352 add r7, r12, r7, asl #6 @
353 @ compute R, G, and B
354 add r0, r8, r7 @ r0 = b' = Y + bu
355 add r11, r9, r7, asl #1 @ r11 = r' = Y*2 + rv
356 rsb r7, r10, r7 @ r7 = g' = Y + guv
357 @
358 sub r12, r0, r0, lsr #5 @ r0 = 31/32*b' + b'/256
359 add r0, r12, r0, lsr #8 @
360 @
361 sub r12, r11, r11, lsr #5 @ r11 = 31/32*r' + r'/256
362 add r11, r12, r11, lsr #8 @
363 @
364 sub r12, r7, r7, lsr #6 @ r7 = 63/64*g' + g'/256
365 add r7, r12, r7, lsr #8 @
366 @
367 add r12, r14, #0x200 @
368 @
369 add r0, r0, r12 @ b = r0 + delta
370 add r11, r11, r12, lsl #1 @ r = r11 + delta*2
371 add r7, r7, r12, lsr #1 @ g = r7 + delta/2
372 @
373 orr r12, r0, r11, asr #1 @ check if clamping is needed...
374 orr r12, r12, r7 @ ...at all
375 movs r12, r12, asr #15 @
376 beq 15f @ no clamp @
377 movs r12, r0, asr #15 @ clamp b
378 mvnne r0, r12, lsr #15 @
379 andne r0, r0, #0x7c00 @ mask b only if clamped
380 movs r12, r11, asr #16 @ clamp r
381 mvnne r11, r12, lsr #16 @
382 movs r12, r7, asr #15 @ clamp g
383 mvnne r7, r12, lsr #15 @
38415: @ no clamp @
385 @
386 ldrb r12, [r4], #1 @ r12 = Y' = *(Y'_p++)
387
388 and r11, r11, #0xf800 @ pack pixel
389 and r7, r7, #0x7e00 @ r0 = pixel = (r & 0xf800) |
390 orr r11, r11, r7, lsr #4 @ ((g & 0x7e00) >> 4) |
391 orr r0, r11, r0, lsr #10 @ (b >> 10)
392 strh r0, [r3, #0x10] @ write pixel
3931: @ busy @
394 ldr r7, [r3,#0xc] @ r7 = DBOP_STATUS
395 tst r7, #DBOP_BUSY @ fifo not empty?
396 beq 1b @
397 @
398 sub r7, r12, #16 @ r7 = Y = (Y' - 16)*149
399 add r12, r7, r7, asl #2 @
400 add r12, r12, r12, asl #4 @
401 add r7, r12, r7, asl #6 @
402 @ compute R, G, and B
403 add r0, r8, r7 @ r0 = b' = Y + bu
404 add r11, r9, r7, asl #1 @ r11 = r' = Y*2 + rv
405 rsb r7, r10, r7 @ r7 = g' = Y + guv
406 @
407 @ r8 = bu, r9 = rv, r10 = guv
408 @
409 sub r12, r0, r0, lsr #5 @ r0 = 31/32*b' + b'/256
410 add r0, r12, r0, lsr #8 @
411 @
412 sub r12, r11, r11, lsr #5 @ r11 = 31/32*r' + r'/256
413 add r11, r12, r11, lsr #8 @
414 @
415 sub r12, r7, r7, lsr #6 @ r7 = 63/64*g' + g'/256
416 add r7, r12, r7, lsr #8 @
417 @
418 add r12, r14, #0x300 @
419 @
420 add r0, r0, r12 @ b = r0 + delta
421 add r11, r11, r12, lsl #1 @ r = r11 + delta*2
422 add r7, r7, r12, lsr #1 @ g = r7 + delta/2
423 @
424 orr r12, r0, r11, asr #1 @ check if clamping is needed...
425 orr r12, r12, r7 @ ...at all
426 movs r12, r12, asr #15 @
427 beq 15f @ no clamp @
428 movs r12, r0, asr #15 @ clamp b
429 mvnne r0, r12, lsr #15 @
430 andne r0, r0, #0x7c00 @ mask b only if clamped
431 movs r12, r11, asr #16 @ clamp r
432 mvnne r11, r12, lsr #16 @
433 movs r12, r7, asr #15 @ clamp g
434 mvnne r7, r12, lsr #15 @
43515: @ no clamp @
436 @
437 ldrb r12, [r4, r2] @ r12 = Y' = *(Y'_p + stride)
438 @
439 and r11, r11, #0xf800 @ pack pixel
440 and r7, r7, #0x7e00 @ r0 = pixel = (r & 0xf800) |
441 orr r11, r11, r7, lsr #4 @ ((g & 0x7e00) >> 4) |
442 orr r0, r11, r0, lsr #10 @ (b >> 10)
443 strh r0, [r3, #0x10] @ write pixel
4441: @ busy @
445 ldr r7, [r3,#0xc] @ r7 = DBOP_STATUS
446 tst r7, #DBOP_BUSY @ fifo not empty?
447 beq 1b @
448 @
449 sub r7, r12, #16 @ r7 = Y = (Y' - 16)*149
450 add r12, r7, r7, asl #2 @
451 add r12, r12, r12, asl #4 @
452 add r7, r12, r7, asl #6 @
453 @ compute R, G, and B
454 add r0, r8, r7 @ r0 = b' = Y + bu
455 add r11, r9, r7, asl #1 @ r11 = r' = Y*2 + rv
456 rsb r7, r10, r7 @ r7 = g' = Y + guv
457 @
458 sub r12, r0, r0, lsr #5 @ r0 = 31/32*b + b/256
459 add r0, r12, r0, lsr #8 @
460 @
461 sub r12, r11, r11, lsr #5 @ r11 = 31/32*r + r/256
462 add r11, r12, r11, lsr #8 @
463 @
464 sub r12, r7, r7, lsr #6 @ r7 = 63/64*g + g/256
465 add r7, r12, r7, lsr #8 @
466 @
467 @ This element is zero - use r14 @
468 @
469 add r0, r0, r14 @ b = r0 + delta
470 add r11, r11, r14, lsl #1 @ r = r11 + delta*2
471 add r7, r7, r14, lsr #1 @ g = r7 + delta/2
472 @
473 orr r12, r0, r11, asr #1 @ check if clamping is needed...
474 orr r12, r12, r7 @ ...at all
475 movs r12, r12, asr #15 @
476 beq 15f @ no clamp @
477 movs r12, r0, asr #15 @ clamp b
478 mvnne r0, r12, lsr #15 @
479 andne r0, r0, #0x7c00 @ mask b only if clamped
480 movs r12, r11, asr #16 @ clamp r
481 mvnne r11, r12, lsr #16 @
482 movs r12, r7, asr #15 @ clamp g
483 mvnne r7, r12, lsr #15 @
48415: @ no clamp @
485 @
486 and r11, r11, #0xf800 @ pack pixel
487 and r7, r7, #0x7e00 @ r0 = pixel = (r & 0xf800) |
488 orr r11, r11, r7, lsr #4 @ ((g & 0x7e00) >> 4) |
489 orr r0, r11, r0, lsr #10 @ (b >> 10)
490 strh r0, [r3, #0x10] @ write pixel
4911: @ busy @
492 ldr r7, [r3,#0xc] @ r7 = DBOP_STATUS
493 tst r7, #DBOP_BUSY @ fifo not empty?
494 beq 1b @
495 @
496 subs r1, r1, #2 @ subtract block from width
497 bgt 10b @ loop line @
498 @
499 ldmfd sp!, { r4-r12, pc } @ restore registers and return
500 .ltorg @ dump constant pool
501 .size lcd_write_yuv420_lines_odither, .-lcd_write_yuv420_lines_odither
diff --git a/firmware/target/arm/as3525/sansa-e200v2/lcd-e200v2.c b/firmware/target/arm/as3525/sansa-e200v2/lcd-e200v2.c
index 30ba8911ea..ef21893494 100644
--- a/firmware/target/arm/as3525/sansa-e200v2/lcd-e200v2.c
+++ b/firmware/target/arm/as3525/sansa-e200v2/lcd-e200v2.c
@@ -74,7 +74,7 @@ static volatile bool lcd_busy = false;
74#define R_GAMMA_GRAD_ADJ_NEG 0x37 74#define R_GAMMA_GRAD_ADJ_NEG 0x37
75 75
76#define R_GAMMA_AMP_ADJ_RES_POS 0x38 76#define R_GAMMA_AMP_ADJ_RES_POS 0x38
77#define R_GAMMA_AMP_AVG_ADJ_RES_NEG 0x39 77#define R_GAMMA_AMP_AVG_ADJ_RES_NEG 0x39
78 78
79#define R_GATE_SCAN_POS 0x40 79#define R_GATE_SCAN_POS 0x40
80#define R_VERT_SCROLL_CONTROL 0x41 80#define R_VERT_SCROLL_CONTROL 0x41
@@ -89,6 +89,7 @@ static volatile bool lcd_busy = false;
89static unsigned short r_entry_mode = R_ENTRY_MODE_HORZ_NORMAL; 89static unsigned short r_entry_mode = R_ENTRY_MODE_HORZ_NORMAL;
90#define R_ENTRY_MODE_VERT 0x7038 90#define R_ENTRY_MODE_VERT 0x7038
91#define R_ENTRY_MODE_SOLID_VERT 0x1038 91#define R_ENTRY_MODE_SOLID_VERT 0x1038
92#define R_ENTRY_MODE_VIDEO 0x7020
92 93
93 94
94/* Reverse Flag */ 95/* Reverse Flag */
@@ -182,7 +183,7 @@ void lcd_set_invert_display(bool yesno)
182void lcd_set_flip(bool yesno) 183void lcd_set_flip(bool yesno)
183{ 184{
184 display_flipped = yesno; 185 display_flipped = yesno;
185 186
186 r_entry_mode = yesno ? R_ENTRY_MODE_HORZ_FLIPPED : 187 r_entry_mode = yesno ? R_ENTRY_MODE_HORZ_FLIPPED :
187 R_ENTRY_MODE_HORZ_NORMAL; 188 R_ENTRY_MODE_HORZ_NORMAL;
188} 189}
@@ -253,13 +254,13 @@ static void _display_on(void)
253 /* DC12-10 = 000b: Step-up1 = clock/8, 254 /* DC12-10 = 000b: Step-up1 = clock/8,
254 * DC02-00 = 000b: Step-up2 = clock/16, 255 * DC02-00 = 000b: Step-up2 = clock/16,
255 * VC2-0 = 010b: VciOUT = 0.87 * VciLVL */ 256 * VC2-0 = 010b: VciOUT = 0.87 * VciLVL */
256 lcd_write_reg(R_POWER_CONTROL2, 0x0002); 257 lcd_write_reg(R_POWER_CONTROL2, 0x0002);
257 258
258 /* VRH3-0 = 1000b: Vreg1OUT = REGP * 1.90 */ 259 /* VRH3-0 = 1000b: Vreg1OUT = REGP * 1.90 */
259 lcd_write_reg(R_POWER_CONTROL3, 0x0008); 260 lcd_write_reg(R_POWER_CONTROL3, 0x0008);
260 261
261 lcd_delay(40); 262 lcd_delay(40);
262 263
263 lcd_write_reg(R_POWER_CONTROL4, 0x0000); /* VCOMG = 0 */ 264 lcd_write_reg(R_POWER_CONTROL4, 0x0000); /* VCOMG = 0 */
264 265
265 /* This register is unknown */ 266 /* This register is unknown */
@@ -270,8 +271,8 @@ static void _display_on(void)
270 271
271 lcd_delay(10); 272 lcd_delay(10);
272 273
273 lcd_write_reg(R_POWER_CONTROL2, 0x0000); 274 lcd_write_reg(R_POWER_CONTROL2, 0x0000);
274 lcd_write_reg(R_POWER_CONTROL3, 0x0013); 275 lcd_write_reg(R_POWER_CONTROL3, 0x0013);
275 276
276 lcd_delay(20); 277 lcd_delay(20);
277 278
@@ -296,7 +297,7 @@ static void _display_on(void)
296 lcd_write_reg(R_GATE_SCAN_POS, 0); 297 lcd_write_reg(R_GATE_SCAN_POS, 0);
297 lcd_write_reg(R_VERT_SCROLL_CONTROL, 0); 298 lcd_write_reg(R_VERT_SCROLL_CONTROL, 0);
298 299
299 lcd_window(0, 0, LCD_WIDTH-1, LCD_HEIGHT-1); 300 lcd_window(0, 0, LCD_WIDTH-1, LCD_HEIGHT-1);
300 lcd_write_reg(R_1ST_SCR_DRV_POS, (LCD_HEIGHT-1) << 8); 301 lcd_write_reg(R_1ST_SCR_DRV_POS, (LCD_HEIGHT-1) << 8);
301 lcd_write_reg(R_2ND_SCR_DRV_POS, (LCD_HEIGHT-1) << 8); 302 lcd_write_reg(R_2ND_SCR_DRV_POS, (LCD_HEIGHT-1) << 8);
302 303
@@ -356,6 +357,30 @@ bool lcd_active(void)
356 357
357/*** update functions ***/ 358/*** update functions ***/
358 359
360static unsigned lcd_yuv_options SHAREDBSS_ATTR = 0;
361
362/* Line write helper function for lcd_yuv_blit. Write two lines of yuv420. */
363extern void lcd_write_yuv420_lines(unsigned char const * const src[3],
364 int width,
365 int stride);
366extern void lcd_write_yuv420_lines_odither(unsigned char const * const src[3],
367 int width,
368 int stride,
369 int x_screen, /* To align dither pattern */
370 int y_screen);
371
372void lcd_yuv_set_options(unsigned options)
373{
374 lcd_yuv_options = options;
375}
376
377static void lcd_window_blit(int xmin, int ymin, int xmax, int ymax)
378{
379 lcd_write_reg(R_HORIZ_RAM_ADDR_POS, ((LCD_WIDTH-1 - xmin) << 8) | (LCD_WIDTH-1 - xmax));
380 lcd_write_reg(R_VERT_RAM_ADDR_POS, (ymax << 8) | ymin);
381 lcd_write_reg(R_RAM_ADDR_SET, (ymin << 8) | (LCD_WIDTH-1 - xmin));
382}
383
359/* Performance function to blit a YUV bitmap directly to the LCD 384/* Performance function to blit a YUV bitmap directly to the LCD
360 * src_x, src_y, width and height should be even 385 * src_x, src_y, width and height should be even
361 * x, y, width and height have to be within LCD bounds 386 * x, y, width and height have to be within LCD bounds
@@ -364,14 +389,58 @@ void lcd_blit_yuv(unsigned char * const src[3],
364 int src_x, int src_y, int stride, 389 int src_x, int src_y, int stride,
365 int x, int y, int width, int height) 390 int x, int y, int width, int height)
366{ 391{
367 (void)src; 392 unsigned char const * yuv_src[3];
368 (void)src_x; 393 off_t z;
369 (void)src_y; 394
370 (void)stride; 395 lcd_busy = true;
371 (void)x; 396
372 (void)y; 397 /* Sorry, but width and height must be >= 2 or else */
373 (void)width; 398 width &= ~1;
374 (void)height; 399 height >>= 1;
400
401 z = stride*src_y;
402 yuv_src[0] = src[0] + z + src_x;
403 yuv_src[1] = src[1] + (z >> 2) + (src_x >> 1);
404 yuv_src[2] = src[2] + (yuv_src[1] - src[1]);
405
406 lcd_write_reg(R_ENTRY_MODE, R_ENTRY_MODE_VIDEO);
407
408 if (lcd_yuv_options & LCD_YUV_DITHER)
409 {
410 do
411 {
412 lcd_window_blit(y, x, y+1, x+width-1);
413
414 /* Start write to GRAM */
415 lcd_write_cmd(R_WRITE_DATA_2_GRAM);
416
417 lcd_write_yuv420_lines_odither(yuv_src, width, stride, x, y);
418 yuv_src[0] += stride << 1; /* Skip down two luma lines */
419 yuv_src[1] += stride >> 1; /* Skip down one chroma line */
420 yuv_src[2] += stride >> 1;
421 y+=2;
422 }
423 while (--height > 0);
424 }
425 else
426 {
427 do
428 {
429 lcd_window_blit(y, x, y+1, x+width-1);
430
431 /* Start write to GRAM */
432 lcd_write_cmd(R_WRITE_DATA_2_GRAM);
433
434 lcd_write_yuv420_lines(yuv_src, width, stride);
435 yuv_src[0] += stride << 1; /* Skip down two luma lines */
436 yuv_src[1] += stride >> 1; /* Skip down one chroma line */
437 yuv_src[2] += stride >> 1;
438 y+=2;
439 }
440 while (--height > 0);
441 }
442
443 lcd_busy = false;
375} 444}
376 445
377/* Update the display. 446/* Update the display.
diff --git a/firmware/target/arm/as3525/sansa-fuze/lcd-fuze.c b/firmware/target/arm/as3525/sansa-fuze/lcd-fuze.c
index 3e08ba4dff..141b890861 100644
--- a/firmware/target/arm/as3525/sansa-fuze/lcd-fuze.c
+++ b/firmware/target/arm/as3525/sansa-fuze/lcd-fuze.c
@@ -37,7 +37,9 @@
37#define R_WRITE_DATA_2_GRAM 0x22 37#define R_WRITE_DATA_2_GRAM 0x22
38 38
39#define R_ENTRY_MODE_HORZ 0x7030 39#define R_ENTRY_MODE_HORZ 0x7030
40#define R_ENTRY_MODE_VERT 0x7038
40 41
42static unsigned lcd_yuv_options SHAREDBSS_ATTR = 0;
41static bool display_on = false; /* is the display turned on? */ 43static bool display_on = false; /* is the display turned on? */
42static bool display_flipped = false; 44static bool display_flipped = false;
43static int xoffset = 20; /* needed for flip */ 45static int xoffset = 20; /* needed for flip */
@@ -189,7 +191,7 @@ void lcd_enable(bool on)
189 * avoid irritating flash on backlight on */ 191 * avoid irritating flash on backlight on */
190 while(delay--); 192 while(delay--);
191 lcd_activation_call_hook(); 193 lcd_activation_call_hook();
192 194
193 } 195 }
194 else 196 else
195 { 197 {
@@ -210,22 +212,94 @@ bool lcd_active(void)
210 212
211/*** update functions ***/ 213/*** update functions ***/
212 214
213/* Performance function to blit a YUV bitmap directly to the LCD 215/* Set horizontal window addresses */
214 * src_x, src_y, width and height should be even 216static void lcd_window_x(int xmin, int xmax)
215 * x, y, width and height have to be within LCD bounds 217{
216 */ 218 xmin += xoffset;
219 xmax += xoffset;
220 lcd_write_reg(0x46, (xmax << 8) | xmin);
221 lcd_write_reg(0x20, xmin);
222}
223
224/* Set vertical window addresses */
225static void lcd_window_y(int ymin, int ymax)
226{
227 lcd_write_reg(0x47, ymax);
228 lcd_write_reg(0x48, ymin);
229 lcd_write_reg(0x21, ymin);
230}
231
232void lcd_yuv_set_options(unsigned options)
233{
234 lcd_yuv_options = options;
235}
236
237/* Line write helper function for lcd_yuv_blit. Write two lines of yuv420. */
238extern void lcd_write_yuv420_lines(unsigned char const * const src[3],
239 int width,
240 int stride);
241extern void lcd_write_yuv420_lines_odither(unsigned char const * const src[3],
242 int width,
243 int stride,
244 int x_screen, /* To align dither pattern */
245 int y_screen);
246/* Performance function to blit a YUV bitmap directly to the LCD */
217void lcd_blit_yuv(unsigned char * const src[3], 247void lcd_blit_yuv(unsigned char * const src[3],
218 int src_x, int src_y, int stride, 248 int src_x, int src_y, int stride,
219 int x, int y, int width, int height) 249 int x, int y, int width, int height)
220{ 250{
221 (void)src; 251 unsigned char const * yuv_src[3];
222 (void)src_x; 252 off_t z;
223 (void)src_y; 253
224 (void)stride; 254 lcd_busy = true;
225 (void)x; 255
226 (void)y; 256 lcd_write_reg(R_ENTRY_MODE, R_ENTRY_MODE_VERT);
227 (void)width; 257
228 (void)height; 258 /* Sorry, but width and height must be >= 2 or else */
259 width &= ~1;
260 height >>= 1;
261
262 z = stride*src_y;
263 yuv_src[0] = src[0] + z + src_x;
264 yuv_src[1] = src[1] + (z >> 2) + (src_x >> 1);
265 yuv_src[2] = src[2] + (yuv_src[1] - src[1]);
266
267 lcd_window_x(x, x + width - 1);
268
269 if (lcd_yuv_options & LCD_YUV_DITHER)
270 {
271 do
272 {
273 lcd_window_y(y, y + 1);
274 /* Start write to GRAM */
275 lcd_write_cmd(R_WRITE_DATA_2_GRAM);
276
277 lcd_write_yuv420_lines_odither(yuv_src, width, stride, x, y);
278 yuv_src[0] += stride << 1; /* Skip down two luma lines */
279 yuv_src[1] += stride >> 1; /* Skip down one chroma line */
280 yuv_src[2] += stride >> 1;
281 y += 2;
282 }
283 while (--height > 0);
284 }
285 else
286 {
287 do
288 {
289 lcd_window_y(y, y + 1);
290 /* Start write to GRAM */
291 lcd_write_cmd(R_WRITE_DATA_2_GRAM);
292
293 lcd_write_yuv420_lines(yuv_src, width, stride);
294 yuv_src[0] += stride << 1; /* Skip down two luma lines */
295 yuv_src[1] += stride >> 1; /* Skip down one chroma line */
296 yuv_src[2] += stride >> 1;
297 y += 2;
298 }
299 while (--height > 0);
300 }
301
302 lcd_busy = false;
229} 303}
230 304
231void lcd_init_device() 305void lcd_init_device()
@@ -242,23 +316,6 @@ void lcd_init_device()
242 _display_on(); 316 _display_on();
243} 317}
244 318
245/* Set horizontal window addresses */
246void lcd_window_x(int xmin, int xmax)
247{
248 xmin += xoffset;
249 xmax += xoffset;
250 lcd_write_reg(0x46, (xmax << 8) | xmin);
251 lcd_write_reg(0x20, xmin);
252}
253
254/* Set vertical window addresses */
255void lcd_window_y(int ymin, int ymax)
256{
257 lcd_write_reg(0x47, ymax);
258 lcd_write_reg(0x48, ymin);
259 lcd_write_reg(0x21, ymin);
260}
261
262/* Update the display. 319/* Update the display.
263 This must be called after all other LCD functions that change the display. */ 320 This must be called after all other LCD functions that change the display. */
264void lcd_update(void) 321void lcd_update(void)
@@ -272,7 +329,7 @@ void lcd_update(void)
272 lcd_window_x(0, LCD_WIDTH - 1); 329 lcd_window_x(0, LCD_WIDTH - 1);
273 lcd_window_y(0, LCD_HEIGHT - 1); 330 lcd_window_y(0, LCD_HEIGHT - 1);
274 331
275 /* Start write to GRAM */ 332 /* Start write to GRAM */
276 lcd_write_cmd(R_WRITE_DATA_2_GRAM); 333 lcd_write_cmd(R_WRITE_DATA_2_GRAM);
277 334
278 /* Write data */ 335 /* Write data */
@@ -313,7 +370,7 @@ void lcd_update_rect(int x, int y, int width, int height)
313 lcd_window_x(x, xmax); 370 lcd_window_x(x, xmax);
314 lcd_window_y(y, ymax); 371 lcd_window_y(y, ymax);
315 372
316 /* Start write to GRAM */ 373 /* Start write to GRAM */
317 lcd_write_cmd(R_WRITE_DATA_2_GRAM); 374 lcd_write_cmd(R_WRITE_DATA_2_GRAM);
318 375
319 ptr = (unsigned short *)&lcd_framebuffer[y][x]; 376 ptr = (unsigned short *)&lcd_framebuffer[y][x];
generated by cgit v1.2.3 (git 2.39.1) at 2024-09-28 17:24:32 +0000