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hw/pxa2xx_timer: Explicitly mark fallthroughs
[qemu/pbrook.git] / hw / tsc210x.c
blob2076c355d2225b303b994185cfedf4571b2ada17
1 /*
2 * TI TSC2102 (touchscreen/sensors/audio controller) emulator.
3 * TI TSC2301 (touchscreen/sensors/keypad).
4 *
5 * Copyright (c) 2006 Andrzej Zaborowski <balrog@zabor.org>
6 * Copyright (C) 2008 Nokia Corporation
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 or
11 * (at your option) version 3 of the License.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, see <http://www.gnu.org/licenses/>.
20 */
21
22 #include "hw.h"
23 #include "audio/audio.h"
24 #include "qemu/timer.h"
25 #include "ui/console.h"
26 #include "omap.h" /* For I2SCodec and uWireSlave */
27 #include "devices.h"
28
29 #define TSC_DATA_REGISTERS_PAGE 0x0
30 #define TSC_CONTROL_REGISTERS_PAGE 0x1
31 #define TSC_AUDIO_REGISTERS_PAGE 0x2
32
33 #define TSC_VERBOSE
34
35 #define TSC_CUT_RESOLUTION(value, p) ((value) >> (16 - resolution[p]))
36
37 typedef struct {
38 qemu_irq pint;
39 qemu_irq kbint;
40 qemu_irq davint;
41 QEMUTimer *timer;
42 QEMUSoundCard card;
43 uWireSlave chip;
44 I2SCodec codec;
45 uint8_t in_fifo[16384];
46 uint8_t out_fifo[16384];
47 uint16_t model;
48
49 int x, y;
50 int pressure;
51
52 int state, page, offset, irq;
53 uint16_t command, dav;
54
55 int busy;
56 int enabled;
57 int host_mode;
58 int function;
59 int nextfunction;
60 int precision;
61 int nextprecision;
62 int filter;
63 int pin_func;
64 int ref;
65 int timing;
66 int noise;
67
68 uint16_t audio_ctrl1;
69 uint16_t audio_ctrl2;
70 uint16_t audio_ctrl3;
71 uint16_t pll[3];
72 uint16_t volume;
73 int64_t volume_change;
74 int softstep;
75 uint16_t dac_power;
76 int64_t powerdown;
77 uint16_t filter_data[0x14];
78
79 const char *name;
80 SWVoiceIn *adc_voice[1];
81 SWVoiceOut *dac_voice[1];
82 int i2s_rx_rate;
83 int i2s_tx_rate;
84
85 int tr[8];
86
87 struct {
88 uint16_t down;
89 uint16_t mask;
90 int scan;
91 int debounce;
92 int mode;
93 int intr;
94 } kb;
95 } TSC210xState;
96
97 static const int resolution[4] = { 12, 8, 10, 12 };
98
99 #define TSC_MODE_NO_SCAN 0x0
100 #define TSC_MODE_XY_SCAN 0x1
101 #define TSC_MODE_XYZ_SCAN 0x2
102 #define TSC_MODE_X 0x3
103 #define TSC_MODE_Y 0x4
104 #define TSC_MODE_Z 0x5
105 #define TSC_MODE_BAT1 0x6
106 #define TSC_MODE_BAT2 0x7
107 #define TSC_MODE_AUX 0x8
108 #define TSC_MODE_AUX_SCAN 0x9
109 #define TSC_MODE_TEMP1 0xa
110 #define TSC_MODE_PORT_SCAN 0xb
111 #define TSC_MODE_TEMP2 0xc
112 #define TSC_MODE_XX_DRV 0xd
113 #define TSC_MODE_YY_DRV 0xe
114 #define TSC_MODE_YX_DRV 0xf
115
116 static const uint16_t mode_regs[16] = {
117 0x0000, /* No scan */
118 0x0600, /* X, Y scan */
119 0x0780, /* X, Y, Z scan */
120 0x0400, /* X */
121 0x0200, /* Y */
122 0x0180, /* Z */
123 0x0040, /* BAT1 */
124 0x0030, /* BAT2 */
125 0x0010, /* AUX */
126 0x0010, /* AUX scan */
127 0x0004, /* TEMP1 */
128 0x0070, /* Port scan */
129 0x0002, /* TEMP2 */
130 0x0000, /* X+, X- drivers */
131 0x0000, /* Y+, Y- drivers */
132 0x0000, /* Y+, X- drivers */
133 };
134
135 #define X_TRANSFORM(s) \
136 ((s->y * s->tr[0] - s->x * s->tr[1]) / s->tr[2] + s->tr[3])
137 #define Y_TRANSFORM(s) \
138 ((s->y * s->tr[4] - s->x * s->tr[5]) / s->tr[6] + s->tr[7])
139 #define Z1_TRANSFORM(s) \
140 ((400 - ((s)->x >> 7) + ((s)->pressure << 10)) << 4)
141 #define Z2_TRANSFORM(s) \
142 ((4000 + ((s)->y >> 7) - ((s)->pressure << 10)) << 4)
143
144 #define BAT1_VAL 0x8660
145 #define BAT2_VAL 0x0000
146 #define AUX1_VAL 0x35c0
147 #define AUX2_VAL 0xffff
148 #define TEMP1_VAL 0x8c70
149 #define TEMP2_VAL 0xa5b0
150
151 #define TSC_POWEROFF_DELAY 50
152 #define TSC_SOFTSTEP_DELAY 50
153
154 static void tsc210x_reset(TSC210xState *s)
155 {
156 s->state = 0;
157 s->pin_func = 2;
158 s->enabled = 0;
159 s->busy = 0;
160 s->nextfunction = 0;
161 s->ref = 0;
162 s->timing = 0;
163 s->irq = 0;
164 s->dav = 0;
165
166 s->audio_ctrl1 = 0x0000;
167 s->audio_ctrl2 = 0x4410;
168 s->audio_ctrl3 = 0x0000;
169 s->pll[0] = 0x1004;
170 s->pll[1] = 0x0000;
171 s->pll[2] = 0x1fff;
172 s->volume = 0xffff;
173 s->dac_power = 0x8540;
174 s->softstep = 1;
175 s->volume_change = 0;
176 s->powerdown = 0;
177 s->filter_data[0x00] = 0x6be3;
178 s->filter_data[0x01] = 0x9666;
179 s->filter_data[0x02] = 0x675d;
180 s->filter_data[0x03] = 0x6be3;
181 s->filter_data[0x04] = 0x9666;
182 s->filter_data[0x05] = 0x675d;
183 s->filter_data[0x06] = 0x7d83;
184 s->filter_data[0x07] = 0x84ee;
185 s->filter_data[0x08] = 0x7d83;
186 s->filter_data[0x09] = 0x84ee;
187 s->filter_data[0x0a] = 0x6be3;
188 s->filter_data[0x0b] = 0x9666;
189 s->filter_data[0x0c] = 0x675d;
190 s->filter_data[0x0d] = 0x6be3;
191 s->filter_data[0x0e] = 0x9666;
192 s->filter_data[0x0f] = 0x675d;
193 s->filter_data[0x10] = 0x7d83;
194 s->filter_data[0x11] = 0x84ee;
195 s->filter_data[0x12] = 0x7d83;
196 s->filter_data[0x13] = 0x84ee;
197
198 s->i2s_tx_rate = 0;
199 s->i2s_rx_rate = 0;
200
201 s->kb.scan = 1;
202 s->kb.debounce = 0;
203 s->kb.mask = 0x0000;
204 s->kb.mode = 3;
205 s->kb.intr = 0;
206
207 qemu_set_irq(s->pint, !s->irq);
208 qemu_set_irq(s->davint, !s->dav);
209 qemu_irq_raise(s->kbint);
210 }
211
212 typedef struct {
213 int rate;
214 int dsor;
215 int fsref;
216 } TSC210xRateInfo;
217
218 /* { rate, dsor, fsref } */
219 static const TSC210xRateInfo tsc2101_rates[] = {
220 /* Fsref / 6.0 */
221 { 7350, 7, 1 },
222 { 8000, 7, 0 },
223 /* Fsref / 5.5 */
224 { 8018, 6, 1 },
225 { 8727, 6, 0 },
226 /* Fsref / 5.0 */
227 { 8820, 5, 1 },
228 { 9600, 5, 0 },
229 /* Fsref / 4.0 */
230 { 11025, 4, 1 },
231 { 12000, 4, 0 },
232 /* Fsref / 3.0 */
233 { 14700, 3, 1 },
234 { 16000, 3, 0 },
235 /* Fsref / 2.0 */
236 { 22050, 2, 1 },
237 { 24000, 2, 0 },
238 /* Fsref / 1.5 */
239 { 29400, 1, 1 },
240 { 32000, 1, 0 },
241 /* Fsref */
242 { 44100, 0, 1 },
243 { 48000, 0, 0 },
244
245 { 0, 0, 0 },
246 };
247
248 /* { rate, dsor, fsref } */
249 static const TSC210xRateInfo tsc2102_rates[] = {
250 /* Fsref / 6.0 */
251 { 7350, 63, 1 },
252 { 8000, 63, 0 },
253 /* Fsref / 6.0 */
254 { 7350, 54, 1 },
255 { 8000, 54, 0 },
256 /* Fsref / 5.0 */
257 { 8820, 45, 1 },
258 { 9600, 45, 0 },
259 /* Fsref / 4.0 */
260 { 11025, 36, 1 },
261 { 12000, 36, 0 },
262 /* Fsref / 3.0 */
263 { 14700, 27, 1 },
264 { 16000, 27, 0 },
265 /* Fsref / 2.0 */
266 { 22050, 18, 1 },
267 { 24000, 18, 0 },
268 /* Fsref / 1.5 */
269 { 29400, 9, 1 },
270 { 32000, 9, 0 },
271 /* Fsref */
272 { 44100, 0, 1 },
273 { 48000, 0, 0 },
274
275 { 0, 0, 0 },
276 };
277
278 static inline void tsc210x_out_flush(TSC210xState *s, int len)
279 {
280 uint8_t *data = s->codec.out.fifo + s->codec.out.start;
281 uint8_t *end = data + len;
282
283 while (data < end)
284 data += AUD_write(s->dac_voice[0], data, end - data) ?: (end - data);
285
286 s->codec.out.len -= len;
287 if (s->codec.out.len)
288 memmove(s->codec.out.fifo, end, s->codec.out.len);
289 s->codec.out.start = 0;
290 }
291
292 static void tsc210x_audio_out_cb(TSC210xState *s, int free_b)
293 {
294 if (s->codec.out.len >= free_b) {
295 tsc210x_out_flush(s, free_b);
296 return;
297 }
298
299 s->codec.out.size = MIN(free_b, 16384);
300 qemu_irq_raise(s->codec.tx_start);
301 }
302
303 static void tsc2102_audio_rate_update(TSC210xState *s)
304 {
305 const TSC210xRateInfo *rate;
306
307 s->codec.tx_rate = 0;
308 s->codec.rx_rate = 0;
309 if (s->dac_power & (1 << 15)) /* PWDNC */
310 return;
311
312 for (rate = tsc2102_rates; rate->rate; rate ++)
313 if (rate->dsor == (s->audio_ctrl1 & 0x3f) && /* DACFS */
314 rate->fsref == ((s->audio_ctrl3 >> 13) & 1))/* REFFS */
315 break;
316 if (!rate->rate) {
317 printf("%s: unknown sampling rate configured\n", __FUNCTION__);
318 return;
319 }
320
321 s->codec.tx_rate = rate->rate;
322 }
323
324 static void tsc2102_audio_output_update(TSC210xState *s)
325 {
326 int enable;
327 struct audsettings fmt;
328
329 if (s->dac_voice[0]) {
330 tsc210x_out_flush(s, s->codec.out.len);
331 s->codec.out.size = 0;
332 AUD_set_active_out(s->dac_voice[0], 0);
333 AUD_close_out(&s->card, s->dac_voice[0]);
334 s->dac_voice[0] = NULL;
335 }
336 s->codec.cts = 0;
337
338 enable =
339 (~s->dac_power & (1 << 15)) && /* PWDNC */
340 (~s->dac_power & (1 << 10)); /* DAPWDN */
341 if (!enable || !s->codec.tx_rate)
342 return;
343
344 /* Force our own sampling rate even in slave DAC mode */
345 fmt.endianness = 0;
346 fmt.nchannels = 2;
347 fmt.freq = s->codec.tx_rate;
348 fmt.fmt = AUD_FMT_S16;
349
350 s->dac_voice[0] = AUD_open_out(&s->card, s->dac_voice[0],
351 "tsc2102.sink", s, (void *) tsc210x_audio_out_cb, &fmt);
352 if (s->dac_voice[0]) {
353 s->codec.cts = 1;
354 AUD_set_active_out(s->dac_voice[0], 1);
355 }
356 }
357
358 static uint16_t tsc2102_data_register_read(TSC210xState *s, int reg)
359 {
360 switch (reg) {
361 case 0x00: /* X */
362 s->dav &= 0xfbff;
363 return TSC_CUT_RESOLUTION(X_TRANSFORM(s), s->precision) +
364 (s->noise & 3);
365
366 case 0x01: /* Y */
367 s->noise ++;
368 s->dav &= 0xfdff;
369 return TSC_CUT_RESOLUTION(Y_TRANSFORM(s), s->precision) ^
370 (s->noise & 3);
371
372 case 0x02: /* Z1 */
373 s->dav &= 0xfeff;
374 return TSC_CUT_RESOLUTION(Z1_TRANSFORM(s), s->precision) -
375 (s->noise & 3);
376
377 case 0x03: /* Z2 */
378 s->dav &= 0xff7f;
379 return TSC_CUT_RESOLUTION(Z2_TRANSFORM(s), s->precision) |
380 (s->noise & 3);
381
382 case 0x04: /* KPData */
383 if ((s->model & 0xff00) == 0x2300) {
384 if (s->kb.intr && (s->kb.mode & 2)) {
385 s->kb.intr = 0;
386 qemu_irq_raise(s->kbint);
387 }
388 return s->kb.down;
389 }
390
391 return 0xffff;
392
393 case 0x05: /* BAT1 */
394 s->dav &= 0xffbf;
395 return TSC_CUT_RESOLUTION(BAT1_VAL, s->precision) +
396 (s->noise & 6);
397
398 case 0x06: /* BAT2 */
399 s->dav &= 0xffdf;
400 return TSC_CUT_RESOLUTION(BAT2_VAL, s->precision);
401
402 case 0x07: /* AUX1 */
403 s->dav &= 0xffef;
404 return TSC_CUT_RESOLUTION(AUX1_VAL, s->precision);
405
406 case 0x08: /* AUX2 */
407 s->dav &= 0xfff7;
408 return 0xffff;
409
410 case 0x09: /* TEMP1 */
411 s->dav &= 0xfffb;
412 return TSC_CUT_RESOLUTION(TEMP1_VAL, s->precision) -
413 (s->noise & 5);
414
415 case 0x0a: /* TEMP2 */
416 s->dav &= 0xfffd;
417 return TSC_CUT_RESOLUTION(TEMP2_VAL, s->precision) ^
418 (s->noise & 3);
419
420 case 0x0b: /* DAC */
421 s->dav &= 0xfffe;
422 return 0xffff;
423
424 default:
425 #ifdef TSC_VERBOSE
426 fprintf(stderr, "tsc2102_data_register_read: "
427 "no such register: 0x%02x\n", reg);
428 #endif
429 return 0xffff;
430 }
431 }
432
433 static uint16_t tsc2102_control_register_read(
434 TSC210xState *s, int reg)
435 {
436 switch (reg) {
437 case 0x00: /* TSC ADC */
438 return (s->pressure << 15) | ((!s->busy) << 14) |
439 (s->nextfunction << 10) | (s->nextprecision << 8) | s->filter;
440
441 case 0x01: /* Status / Keypad Control */
442 if ((s->model & 0xff00) == 0x2100)
443 return (s->pin_func << 14) | ((!s->enabled) << 13) |
444 (s->host_mode << 12) | ((!!s->dav) << 11) | s->dav;
445 else
446 return (s->kb.intr << 15) | ((s->kb.scan || !s->kb.down) << 14) |
447 (s->kb.debounce << 11);
448
449 case 0x02: /* DAC Control */
450 if ((s->model & 0xff00) == 0x2300)
451 return s->dac_power & 0x8000;
452 else
453 goto bad_reg;
454
455 case 0x03: /* Reference */
456 return s->ref;
457
458 case 0x04: /* Reset */
459 return 0xffff;
460
461 case 0x05: /* Configuration */
462 return s->timing;
463
464 case 0x06: /* Secondary configuration */
465 if ((s->model & 0xff00) == 0x2100)
466 goto bad_reg;
467 return ((!s->dav) << 15) | ((s->kb.mode & 1) << 14) | s->pll[2];
468
469 case 0x10: /* Keypad Mask */
470 if ((s->model & 0xff00) == 0x2100)
471 goto bad_reg;
472 return s->kb.mask;
473
474 default:
475 bad_reg:
476 #ifdef TSC_VERBOSE
477 fprintf(stderr, "tsc2102_control_register_read: "
478 "no such register: 0x%02x\n", reg);
479 #endif
480 return 0xffff;
481 }
482 }
483
484 static uint16_t tsc2102_audio_register_read(TSC210xState *s, int reg)
485 {
486 int l_ch, r_ch;
487 uint16_t val;
488
489 switch (reg) {
490 case 0x00: /* Audio Control 1 */
491 return s->audio_ctrl1;
492
493 case 0x01:
494 return 0xff00;
495
496 case 0x02: /* DAC Volume Control */
497 return s->volume;
498
499 case 0x03:
500 return 0x8b00;
501
502 case 0x04: /* Audio Control 2 */
503 l_ch = 1;
504 r_ch = 1;
505 if (s->softstep && !(s->dac_power & (1 << 10))) {
506 l_ch = (qemu_get_clock_ns(vm_clock) >
507 s->volume_change + TSC_SOFTSTEP_DELAY);
508 r_ch = (qemu_get_clock_ns(vm_clock) >
509 s->volume_change + TSC_SOFTSTEP_DELAY);
510 }
511
512 return s->audio_ctrl2 | (l_ch << 3) | (r_ch << 2);
513
514 case 0x05: /* Stereo DAC Power Control */
515 return 0x2aa0 | s->dac_power |
516 (((s->dac_power & (1 << 10)) &&
517 (qemu_get_clock_ns(vm_clock) >
518 s->powerdown + TSC_POWEROFF_DELAY)) << 6);
519
520 case 0x06: /* Audio Control 3 */
521 val = s->audio_ctrl3 | 0x0001;
522 s->audio_ctrl3 &= 0xff3f;
523 return val;
524
525 case 0x07: /* LCH_BASS_BOOST_N0 */
526 case 0x08: /* LCH_BASS_BOOST_N1 */
527 case 0x09: /* LCH_BASS_BOOST_N2 */
528 case 0x0a: /* LCH_BASS_BOOST_N3 */
529 case 0x0b: /* LCH_BASS_BOOST_N4 */
530 case 0x0c: /* LCH_BASS_BOOST_N5 */
531 case 0x0d: /* LCH_BASS_BOOST_D1 */
532 case 0x0e: /* LCH_BASS_BOOST_D2 */
533 case 0x0f: /* LCH_BASS_BOOST_D4 */
534 case 0x10: /* LCH_BASS_BOOST_D5 */
535 case 0x11: /* RCH_BASS_BOOST_N0 */
536 case 0x12: /* RCH_BASS_BOOST_N1 */
537 case 0x13: /* RCH_BASS_BOOST_N2 */
538 case 0x14: /* RCH_BASS_BOOST_N3 */
539 case 0x15: /* RCH_BASS_BOOST_N4 */
540 case 0x16: /* RCH_BASS_BOOST_N5 */
541 case 0x17: /* RCH_BASS_BOOST_D1 */
542 case 0x18: /* RCH_BASS_BOOST_D2 */
543 case 0x19: /* RCH_BASS_BOOST_D4 */
544 case 0x1a: /* RCH_BASS_BOOST_D5 */
545 return s->filter_data[reg - 0x07];
546
547 case 0x1b: /* PLL Programmability 1 */
548 return s->pll[0];
549
550 case 0x1c: /* PLL Programmability 2 */
551 return s->pll[1];
552
553 case 0x1d: /* Audio Control 4 */
554 return (!s->softstep) << 14;
555
556 default:
557 #ifdef TSC_VERBOSE
558 fprintf(stderr, "tsc2102_audio_register_read: "
559 "no such register: 0x%02x\n", reg);
560 #endif
561 return 0xffff;
562 }
563 }
564
565 static void tsc2102_data_register_write(
566 TSC210xState *s, int reg, uint16_t value)
567 {
568 switch (reg) {
569 case 0x00: /* X */
570 case 0x01: /* Y */
571 case 0x02: /* Z1 */
572 case 0x03: /* Z2 */
573 case 0x05: /* BAT1 */
574 case 0x06: /* BAT2 */
575 case 0x07: /* AUX1 */
576 case 0x08: /* AUX2 */
577 case 0x09: /* TEMP1 */
578 case 0x0a: /* TEMP2 */
579 return;
580
581 default:
582 #ifdef TSC_VERBOSE
583 fprintf(stderr, "tsc2102_data_register_write: "
584 "no such register: 0x%02x\n", reg);
585 #endif
586 }
587 }
588
589 static void tsc2102_control_register_write(
590 TSC210xState *s, int reg, uint16_t value)
591 {
592 switch (reg) {
593 case 0x00: /* TSC ADC */
594 s->host_mode = value >> 15;
595 s->enabled = !(value & 0x4000);
596 if (s->busy && !s->enabled)
597 qemu_del_timer(s->timer);
598 s->busy &= s->enabled;
599 s->nextfunction = (value >> 10) & 0xf;
600 s->nextprecision = (value >> 8) & 3;
601 s->filter = value & 0xff;
602 return;
603
604 case 0x01: /* Status / Keypad Control */
605 if ((s->model & 0xff00) == 0x2100)
606 s->pin_func = value >> 14;
607 else {
608 s->kb.scan = (value >> 14) & 1;
609 s->kb.debounce = (value >> 11) & 7;
610 if (s->kb.intr && s->kb.scan) {
611 s->kb.intr = 0;
612 qemu_irq_raise(s->kbint);
613 }
614 }
615 return;
616
617 case 0x02: /* DAC Control */
618 if ((s->model & 0xff00) == 0x2300) {
619 s->dac_power &= 0x7fff;
620 s->dac_power |= 0x8000 & value;
621 } else
622 goto bad_reg;
623 break;
624
625 case 0x03: /* Reference */
626 s->ref = value & 0x1f;
627 return;
628
629 case 0x04: /* Reset */
630 if (value == 0xbb00) {
631 if (s->busy)
632 qemu_del_timer(s->timer);
633 tsc210x_reset(s);
634 #ifdef TSC_VERBOSE
635 } else {
636 fprintf(stderr, "tsc2102_control_register_write: "
637 "wrong value written into RESET\n");
638 #endif
639 }
640 return;
641
642 case 0x05: /* Configuration */
643 s->timing = value & 0x3f;
644 #ifdef TSC_VERBOSE
645 if (value & ~0x3f)
646 fprintf(stderr, "tsc2102_control_register_write: "
647 "wrong value written into CONFIG\n");
648 #endif
649 return;
650
651 case 0x06: /* Secondary configuration */
652 if ((s->model & 0xff00) == 0x2100)
653 goto bad_reg;
654 s->kb.mode = value >> 14;
655 s->pll[2] = value & 0x3ffff;
656 return;
657
658 case 0x10: /* Keypad Mask */
659 if ((s->model & 0xff00) == 0x2100)
660 goto bad_reg;
661 s->kb.mask = value;
662 return;
663
664 default:
665 bad_reg:
666 #ifdef TSC_VERBOSE
667 fprintf(stderr, "tsc2102_control_register_write: "
668 "no such register: 0x%02x\n", reg);
669 #endif
670 }
671 }
672
673 static void tsc2102_audio_register_write(
674 TSC210xState *s, int reg, uint16_t value)
675 {
676 switch (reg) {
677 case 0x00: /* Audio Control 1 */
678 s->audio_ctrl1 = value & 0x0f3f;
679 #ifdef TSC_VERBOSE
680 if ((value & ~0x0f3f) || ((value & 7) != ((value >> 3) & 7)))
681 fprintf(stderr, "tsc2102_audio_register_write: "
682 "wrong value written into Audio 1\n");
683 #endif
684 tsc2102_audio_rate_update(s);
685 tsc2102_audio_output_update(s);
686 return;
687
688 case 0x01:
689 #ifdef TSC_VERBOSE
690 if (value != 0xff00)
691 fprintf(stderr, "tsc2102_audio_register_write: "
692 "wrong value written into reg 0x01\n");
693 #endif
694 return;
695
696 case 0x02: /* DAC Volume Control */
697 s->volume = value;
698 s->volume_change = qemu_get_clock_ns(vm_clock);
699 return;
700
701 case 0x03:
702 #ifdef TSC_VERBOSE
703 if (value != 0x8b00)
704 fprintf(stderr, "tsc2102_audio_register_write: "
705 "wrong value written into reg 0x03\n");
706 #endif
707 return;
708
709 case 0x04: /* Audio Control 2 */
710 s->audio_ctrl2 = value & 0xf7f2;
711 #ifdef TSC_VERBOSE
712 if (value & ~0xf7fd)
713 fprintf(stderr, "tsc2102_audio_register_write: "
714 "wrong value written into Audio 2\n");
715 #endif
716 return;
717
718 case 0x05: /* Stereo DAC Power Control */
719 if ((value & ~s->dac_power) & (1 << 10))
720 s->powerdown = qemu_get_clock_ns(vm_clock);
721
722 s->dac_power = value & 0x9543;
723 #ifdef TSC_VERBOSE
724 if ((value & ~0x9543) != 0x2aa0)
725 fprintf(stderr, "tsc2102_audio_register_write: "
726 "wrong value written into Power\n");
727 #endif
728 tsc2102_audio_rate_update(s);
729 tsc2102_audio_output_update(s);
730 return;
731
732 case 0x06: /* Audio Control 3 */
733 s->audio_ctrl3 &= 0x00c0;
734 s->audio_ctrl3 |= value & 0xf800;
735 #ifdef TSC_VERBOSE
736 if (value & ~0xf8c7)
737 fprintf(stderr, "tsc2102_audio_register_write: "
738 "wrong value written into Audio 3\n");
739 #endif
740 tsc2102_audio_output_update(s);
741 return;
742
743 case 0x07: /* LCH_BASS_BOOST_N0 */
744 case 0x08: /* LCH_BASS_BOOST_N1 */
745 case 0x09: /* LCH_BASS_BOOST_N2 */
746 case 0x0a: /* LCH_BASS_BOOST_N3 */
747 case 0x0b: /* LCH_BASS_BOOST_N4 */
748 case 0x0c: /* LCH_BASS_BOOST_N5 */
749 case 0x0d: /* LCH_BASS_BOOST_D1 */
750 case 0x0e: /* LCH_BASS_BOOST_D2 */
751 case 0x0f: /* LCH_BASS_BOOST_D4 */
752 case 0x10: /* LCH_BASS_BOOST_D5 */
753 case 0x11: /* RCH_BASS_BOOST_N0 */
754 case 0x12: /* RCH_BASS_BOOST_N1 */
755 case 0x13: /* RCH_BASS_BOOST_N2 */
756 case 0x14: /* RCH_BASS_BOOST_N3 */
757 case 0x15: /* RCH_BASS_BOOST_N4 */
758 case 0x16: /* RCH_BASS_BOOST_N5 */
759 case 0x17: /* RCH_BASS_BOOST_D1 */
760 case 0x18: /* RCH_BASS_BOOST_D2 */
761 case 0x19: /* RCH_BASS_BOOST_D4 */
762 case 0x1a: /* RCH_BASS_BOOST_D5 */
763 s->filter_data[reg - 0x07] = value;
764 return;
765
766 case 0x1b: /* PLL Programmability 1 */
767 s->pll[0] = value & 0xfffc;
768 #ifdef TSC_VERBOSE
769 if (value & ~0xfffc)
770 fprintf(stderr, "tsc2102_audio_register_write: "
771 "wrong value written into PLL 1\n");
772 #endif
773 return;
774
775 case 0x1c: /* PLL Programmability 2 */
776 s->pll[1] = value & 0xfffc;
777 #ifdef TSC_VERBOSE
778 if (value & ~0xfffc)
779 fprintf(stderr, "tsc2102_audio_register_write: "
780 "wrong value written into PLL 2\n");
781 #endif
782 return;
783
784 case 0x1d: /* Audio Control 4 */
785 s->softstep = !(value & 0x4000);
786 #ifdef TSC_VERBOSE
787 if (value & ~0x4000)
788 fprintf(stderr, "tsc2102_audio_register_write: "
789 "wrong value written into Audio 4\n");
790 #endif
791 return;
792
793 default:
794 #ifdef TSC_VERBOSE
795 fprintf(stderr, "tsc2102_audio_register_write: "
796 "no such register: 0x%02x\n", reg);
797 #endif
798 }
799 }
800
801 /* This handles most of the chip logic. */
802 static void tsc210x_pin_update(TSC210xState *s)
803 {
804 int64_t expires;
805 int pin_state;
806
807 switch (s->pin_func) {
808 case 0:
809 pin_state = s->pressure;
810 break;
811 case 1:
812 pin_state = !!s->dav;
813 break;
814 case 2:
815 default:
816 pin_state = s->pressure && !s->dav;
817 }
818
819 if (!s->enabled)
820 pin_state = 0;
821
822 if (pin_state != s->irq) {
823 s->irq = pin_state;
824 qemu_set_irq(s->pint, !s->irq);
825 }
826
827 switch (s->nextfunction) {
828 case TSC_MODE_XY_SCAN:
829 case TSC_MODE_XYZ_SCAN:
830 if (!s->pressure)
831 return;
832 break;
833
834 case TSC_MODE_X:
835 case TSC_MODE_Y:
836 case TSC_MODE_Z:
837 if (!s->pressure)
838 return;
839 /* Fall through */
840 case TSC_MODE_BAT1:
841 case TSC_MODE_BAT2:
842 case TSC_MODE_AUX:
843 case TSC_MODE_TEMP1:
844 case TSC_MODE_TEMP2:
845 if (s->dav)
846 s->enabled = 0;
847 break;
848
849 case TSC_MODE_AUX_SCAN:
850 case TSC_MODE_PORT_SCAN:
851 break;
852
853 case TSC_MODE_NO_SCAN:
854 case TSC_MODE_XX_DRV:
855 case TSC_MODE_YY_DRV:
856 case TSC_MODE_YX_DRV:
857 default:
858 return;
859 }
860
861 if (!s->enabled || s->busy || s->dav)
862 return;
863
864 s->busy = 1;
865 s->precision = s->nextprecision;
866 s->function = s->nextfunction;
867 expires = qemu_get_clock_ns(vm_clock) + (get_ticks_per_sec() >> 10);
868 qemu_mod_timer(s->timer, expires);
869 }
870
871 static uint16_t tsc210x_read(TSC210xState *s)
872 {
873 uint16_t ret = 0x0000;
874
875 if (!s->command)
876 fprintf(stderr, "tsc210x_read: SPI underrun!\n");
877
878 switch (s->page) {
879 case TSC_DATA_REGISTERS_PAGE:
880 ret = tsc2102_data_register_read(s, s->offset);
881 if (!s->dav)
882 qemu_irq_raise(s->davint);
883 break;
884 case TSC_CONTROL_REGISTERS_PAGE:
885 ret = tsc2102_control_register_read(s, s->offset);
886 break;
887 case TSC_AUDIO_REGISTERS_PAGE:
888 ret = tsc2102_audio_register_read(s, s->offset);
889 break;
890 default:
891 hw_error("tsc210x_read: wrong memory page\n");
892 }
893
894 tsc210x_pin_update(s);
895
896 /* Allow sequential reads. */
897 s->offset ++;
898 s->state = 0;
899 return ret;
900 }
901
902 static void tsc210x_write(TSC210xState *s, uint16_t value)
903 {
904 /*
905 * This is a two-state state machine for reading
906 * command and data every second time.
907 */
908 if (!s->state) {
909 s->command = value >> 15;
910 s->page = (value >> 11) & 0x0f;
911 s->offset = (value >> 5) & 0x3f;
912 s->state = 1;
913 } else {
914 if (s->command)
915 fprintf(stderr, "tsc210x_write: SPI overrun!\n");
916 else
917 switch (s->page) {
918 case TSC_DATA_REGISTERS_PAGE:
919 tsc2102_data_register_write(s, s->offset, value);
920 break;
921 case TSC_CONTROL_REGISTERS_PAGE:
922 tsc2102_control_register_write(s, s->offset, value);
923 break;
924 case TSC_AUDIO_REGISTERS_PAGE:
925 tsc2102_audio_register_write(s, s->offset, value);
926 break;
927 default:
928 hw_error("tsc210x_write: wrong memory page\n");
929 }
930
931 tsc210x_pin_update(s);
932 s->state = 0;
933 }
934 }
935
936 uint32_t tsc210x_txrx(void *opaque, uint32_t value, int len)
937 {
938 TSC210xState *s = opaque;
939 uint32_t ret = 0;
940
941 if (len != 16)
942 hw_error("%s: FIXME: bad SPI word width %i\n", __FUNCTION__, len);
943
944 /* TODO: sequential reads etc - how do we make sure the host doesn't
945 * unintentionally read out a conversion result from a register while
946 * transmitting the command word of the next command? */
947 if (!value || (s->state && s->command))
948 ret = tsc210x_read(s);
949 if (value || (s->state && !s->command))
950 tsc210x_write(s, value);
951
952 return ret;
953 }
954
955 static void tsc210x_timer_tick(void *opaque)
956 {
957 TSC210xState *s = opaque;
958
959 /* Timer ticked -- a set of conversions has been finished. */
960
961 if (!s->busy)
962 return;
963
964 s->busy = 0;
965 s->dav |= mode_regs[s->function];
966 tsc210x_pin_update(s);
967 qemu_irq_lower(s->davint);
968 }
969
970 static void tsc210x_touchscreen_event(void *opaque,
971 int x, int y, int z, int buttons_state)
972 {
973 TSC210xState *s = opaque;
974 int p = s->pressure;
975
976 if (buttons_state) {
977 s->x = x;
978 s->y = y;
979 }
980 s->pressure = !!buttons_state;
981
982 /*
983 * Note: We would get better responsiveness in the guest by
984 * signaling TS events immediately, but for now we simulate
985 * the first conversion delay for sake of correctness.
986 */
987 if (p != s->pressure)
988 tsc210x_pin_update(s);
989 }
990
991 static void tsc210x_i2s_swallow(TSC210xState *s)
992 {
993 if (s->dac_voice[0])
994 tsc210x_out_flush(s, s->codec.out.len);
995 else
996 s->codec.out.len = 0;
997 }
998
999 static void tsc210x_i2s_set_rate(TSC210xState *s, int in, int out)
1000 {
1001 s->i2s_tx_rate = out;
1002 s->i2s_rx_rate = in;
1003 }
1004
1005 static void tsc210x_save(QEMUFile *f, void *opaque)
1006 {
1007 TSC210xState *s = (TSC210xState *) opaque;
1008 int64_t now = qemu_get_clock_ns(vm_clock);
1009 int i;
1010
1011 qemu_put_be16(f, s->x);
1012 qemu_put_be16(f, s->y);
1013 qemu_put_byte(f, s->pressure);
1014
1015 qemu_put_byte(f, s->state);
1016 qemu_put_byte(f, s->page);
1017 qemu_put_byte(f, s->offset);
1018 qemu_put_byte(f, s->command);
1019
1020 qemu_put_byte(f, s->irq);
1021 qemu_put_be16s(f, &s->dav);
1022
1023 qemu_put_timer(f, s->timer);
1024 qemu_put_byte(f, s->enabled);
1025 qemu_put_byte(f, s->host_mode);
1026 qemu_put_byte(f, s->function);
1027 qemu_put_byte(f, s->nextfunction);
1028 qemu_put_byte(f, s->precision);
1029 qemu_put_byte(f, s->nextprecision);
1030 qemu_put_byte(f, s->filter);
1031 qemu_put_byte(f, s->pin_func);
1032 qemu_put_byte(f, s->ref);
1033 qemu_put_byte(f, s->timing);
1034 qemu_put_be32(f, s->noise);
1035
1036 qemu_put_be16s(f, &s->audio_ctrl1);
1037 qemu_put_be16s(f, &s->audio_ctrl2);
1038 qemu_put_be16s(f, &s->audio_ctrl3);
1039 qemu_put_be16s(f, &s->pll[0]);
1040 qemu_put_be16s(f, &s->pll[1]);
1041 qemu_put_be16s(f, &s->volume);
1042 qemu_put_sbe64(f, (s->volume_change - now));
1043 qemu_put_sbe64(f, (s->powerdown - now));
1044 qemu_put_byte(f, s->softstep);
1045 qemu_put_be16s(f, &s->dac_power);
1046
1047 for (i = 0; i < 0x14; i ++)
1048 qemu_put_be16s(f, &s->filter_data[i]);
1049 }
1050
1051 static int tsc210x_load(QEMUFile *f, void *opaque, int version_id)
1052 {
1053 TSC210xState *s = (TSC210xState *) opaque;
1054 int64_t now = qemu_get_clock_ns(vm_clock);
1055 int i;
1056
1057 s->x = qemu_get_be16(f);
1058 s->y = qemu_get_be16(f);
1059 s->pressure = qemu_get_byte(f);
1060
1061 s->state = qemu_get_byte(f);
1062 s->page = qemu_get_byte(f);
1063 s->offset = qemu_get_byte(f);
1064 s->command = qemu_get_byte(f);
1065
1066 s->irq = qemu_get_byte(f);
1067 qemu_get_be16s(f, &s->dav);
1068
1069 qemu_get_timer(f, s->timer);
1070 s->enabled = qemu_get_byte(f);
1071 s->host_mode = qemu_get_byte(f);
1072 s->function = qemu_get_byte(f);
1073 s->nextfunction = qemu_get_byte(f);
1074 s->precision = qemu_get_byte(f);
1075 s->nextprecision = qemu_get_byte(f);
1076 s->filter = qemu_get_byte(f);
1077 s->pin_func = qemu_get_byte(f);
1078 s->ref = qemu_get_byte(f);
1079 s->timing = qemu_get_byte(f);
1080 s->noise = qemu_get_be32(f);
1081
1082 qemu_get_be16s(f, &s->audio_ctrl1);
1083 qemu_get_be16s(f, &s->audio_ctrl2);
1084 qemu_get_be16s(f, &s->audio_ctrl3);
1085 qemu_get_be16s(f, &s->pll[0]);
1086 qemu_get_be16s(f, &s->pll[1]);
1087 qemu_get_be16s(f, &s->volume);
1088 s->volume_change = qemu_get_sbe64(f) + now;
1089 s->powerdown = qemu_get_sbe64(f) + now;
1090 s->softstep = qemu_get_byte(f);
1091 qemu_get_be16s(f, &s->dac_power);
1092
1093 for (i = 0; i < 0x14; i ++)
1094 qemu_get_be16s(f, &s->filter_data[i]);
1095
1096 s->busy = qemu_timer_pending(s->timer);
1097 qemu_set_irq(s->pint, !s->irq);
1098 qemu_set_irq(s->davint, !s->dav);
1099
1100 return 0;
1101 }
1102
1103 uWireSlave *tsc2102_init(qemu_irq pint)
1104 {
1105 TSC210xState *s;
1106
1107 s = (TSC210xState *)
1108 g_malloc0(sizeof(TSC210xState));
1109 memset(s, 0, sizeof(TSC210xState));
1110 s->x = 160;
1111 s->y = 160;
1112 s->pressure = 0;
1113 s->precision = s->nextprecision = 0;
1114 s->timer = qemu_new_timer_ns(vm_clock, tsc210x_timer_tick, s);
1115 s->pint = pint;
1116 s->model = 0x2102;
1117 s->name = "tsc2102";
1118
1119 s->tr[0] = 0;
1120 s->tr[1] = 1;
1121 s->tr[2] = 1;
1122 s->tr[3] = 0;
1123 s->tr[4] = 1;
1124 s->tr[5] = 0;
1125 s->tr[6] = 1;
1126 s->tr[7] = 0;
1127
1128 s->chip.opaque = s;
1129 s->chip.send = (void *) tsc210x_write;
1130 s->chip.receive = (void *) tsc210x_read;
1131
1132 s->codec.opaque = s;
1133 s->codec.tx_swallow = (void *) tsc210x_i2s_swallow;
1134 s->codec.set_rate = (void *) tsc210x_i2s_set_rate;
1135 s->codec.in.fifo = s->in_fifo;
1136 s->codec.out.fifo = s->out_fifo;
1137
1138 tsc210x_reset(s);
1139
1140 qemu_add_mouse_event_handler(tsc210x_touchscreen_event, s, 1,
1141 "QEMU TSC2102-driven Touchscreen");
1142
1143 AUD_register_card(s->name, &s->card);
1144
1145 qemu_register_reset((void *) tsc210x_reset, s);
1146 register_savevm(NULL, s->name, -1, 0,
1147 tsc210x_save, tsc210x_load, s);
1148
1149 return &s->chip;
1150 }
1151
1152 uWireSlave *tsc2301_init(qemu_irq penirq, qemu_irq kbirq, qemu_irq dav)
1153 {
1154 TSC210xState *s;
1155
1156 s = (TSC210xState *)
1157 g_malloc0(sizeof(TSC210xState));
1158 memset(s, 0, sizeof(TSC210xState));
1159 s->x = 400;
1160 s->y = 240;
1161 s->pressure = 0;
1162 s->precision = s->nextprecision = 0;
1163 s->timer = qemu_new_timer_ns(vm_clock, tsc210x_timer_tick, s);
1164 s->pint = penirq;
1165 s->kbint = kbirq;
1166 s->davint = dav;
1167 s->model = 0x2301;
1168 s->name = "tsc2301";
1169
1170 s->tr[0] = 0;
1171 s->tr[1] = 1;
1172 s->tr[2] = 1;
1173 s->tr[3] = 0;
1174 s->tr[4] = 1;
1175 s->tr[5] = 0;
1176 s->tr[6] = 1;
1177 s->tr[7] = 0;
1178
1179 s->chip.opaque = s;
1180 s->chip.send = (void *) tsc210x_write;
1181 s->chip.receive = (void *) tsc210x_read;
1182
1183 s->codec.opaque = s;
1184 s->codec.tx_swallow = (void *) tsc210x_i2s_swallow;
1185 s->codec.set_rate = (void *) tsc210x_i2s_set_rate;
1186 s->codec.in.fifo = s->in_fifo;
1187 s->codec.out.fifo = s->out_fifo;
1188
1189 tsc210x_reset(s);
1190
1191 qemu_add_mouse_event_handler(tsc210x_touchscreen_event, s, 1,
1192 "QEMU TSC2301-driven Touchscreen");
1193
1194 AUD_register_card(s->name, &s->card);
1195
1196 qemu_register_reset((void *) tsc210x_reset, s);
1197 register_savevm(NULL, s->name, -1, 0, tsc210x_save, tsc210x_load, s);
1198
1199 return &s->chip;
1200 }
1201
1202 I2SCodec *tsc210x_codec(uWireSlave *chip)
1203 {
1204 TSC210xState *s = (TSC210xState *) chip->opaque;
1205
1206 return &s->codec;
1207 }
1208
1209 /*
1210 * Use tslib generated calibration data to generate ADC input values
1211 * from the touchscreen. Assuming 12-bit precision was used during
1212 * tslib calibration.
1213 */
1214 void tsc210x_set_transform(uWireSlave *chip,
1215 MouseTransformInfo *info)
1216 {
1217 TSC210xState *s = (TSC210xState *) chip->opaque;
1218 #if 0
1219 int64_t ltr[8];
1220
1221 ltr[0] = (int64_t) info->a[1] * info->y;
1222 ltr[1] = (int64_t) info->a[4] * info->x;
1223 ltr[2] = (int64_t) info->a[1] * info->a[3] -
1224 (int64_t) info->a[4] * info->a[0];
1225 ltr[3] = (int64_t) info->a[2] * info->a[4] -
1226 (int64_t) info->a[5] * info->a[1];
1227 ltr[4] = (int64_t) info->a[0] * info->y;
1228 ltr[5] = (int64_t) info->a[3] * info->x;
1229 ltr[6] = (int64_t) info->a[4] * info->a[0] -
1230 (int64_t) info->a[1] * info->a[3];
1231 ltr[7] = (int64_t) info->a[2] * info->a[3] -
1232 (int64_t) info->a[5] * info->a[0];
1233
1234 /* Avoid integer overflow */
1235 s->tr[0] = ltr[0] >> 11;
1236 s->tr[1] = ltr[1] >> 11;
1237 s->tr[2] = muldiv64(ltr[2], 1, info->a[6]);
1238 s->tr[3] = muldiv64(ltr[3], 1 << 4, ltr[2]);
1239 s->tr[4] = ltr[4] >> 11;
1240 s->tr[5] = ltr[5] >> 11;
1241 s->tr[6] = muldiv64(ltr[6], 1, info->a[6]);
1242 s->tr[7] = muldiv64(ltr[7], 1 << 4, ltr[6]);
1243 #else
1244
1245 /* This version assumes touchscreen X & Y axis are parallel or
1246 * perpendicular to LCD's X & Y axis in some way. */
1247 if (abs(info->a[0]) > abs(info->a[1])) {
1248 s->tr[0] = 0;
1249 s->tr[1] = -info->a[6] * info->x;
1250 s->tr[2] = info->a[0];
1251 s->tr[3] = -info->a[2] / info->a[0];
1252 s->tr[4] = info->a[6] * info->y;
1253 s->tr[5] = 0;
1254 s->tr[6] = info->a[4];
1255 s->tr[7] = -info->a[5] / info->a[4];
1256 } else {
1257 s->tr[0] = info->a[6] * info->y;
1258 s->tr[1] = 0;
1259 s->tr[2] = info->a[1];
1260 s->tr[3] = -info->a[2] / info->a[1];
1261 s->tr[4] = 0;
1262 s->tr[5] = -info->a[6] * info->x;
1263 s->tr[6] = info->a[3];
1264 s->tr[7] = -info->a[5] / info->a[3];
1265 }
1266
1267 s->tr[0] >>= 11;
1268 s->tr[1] >>= 11;
1269 s->tr[3] <<= 4;
1270 s->tr[4] >>= 11;
1271 s->tr[5] >>= 11;
1272 s->tr[7] <<= 4;
1273 #endif
1274 }
1275
1276 void tsc210x_key_event(uWireSlave *chip, int key, int down)
1277 {
1278 TSC210xState *s = (TSC210xState *) chip->opaque;
1279
1280 if (down)
1281 s->kb.down |= 1 << key;
1282 else
1283 s->kb.down &= ~(1 << key);
1284
1285 if (down && (s->kb.down & ~s->kb.mask) && !s->kb.intr) {
1286 s->kb.intr = 1;
1287 qemu_irq_lower(s->kbint);
1288 } else if (s->kb.intr && !(s->kb.down & ~s->kb.mask) &&
1289 !(s->kb.mode & 1)) {
1290 s->kb.intr = 0;
1291 qemu_irq_raise(s->kbint);
1292 }
1293 }
Various patches