2 * TI TSC2102 (touchscreen/sensors/audio controller) emulator.
3 * TI TSC2301 (touchscreen/sensors/keypad).
5 * Copyright (c) 2006 Andrzej Zaborowski <balrog@zabor.org>
6 * Copyright (C) 2008 Nokia Corporation
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.
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.
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/>.
22 #include "qemu/osdep.h"
24 #include "audio/audio.h"
25 #include "qemu/timer.h"
27 #include "sysemu/reset.h"
28 #include "ui/console.h"
29 #include "hw/arm/omap.h" /* For I2SCodec */
30 #include "hw/boards.h" /* for current_machine */
31 #include "hw/input/tsc2xxx.h"
33 #include "migration/vmstate.h"
34 #include "qapi/error.h"
36 #define TSC_DATA_REGISTERS_PAGE 0x0
37 #define TSC_CONTROL_REGISTERS_PAGE 0x1
38 #define TSC_AUDIO_REGISTERS_PAGE 0x2
42 #define TSC_CUT_RESOLUTION(value, p) ((value) >> (16 - resolution[p]))
52 uint8_t in_fifo
[16384];
53 uint8_t out_fifo
[16384];
68 uint8_t function
, nextfunction
;
69 uint8_t precision
, nextprecision
;
81 int64_t volume_change
;
85 uint16_t filter_data
[0x14];
88 SWVoiceIn
*adc_voice
[1];
89 SWVoiceOut
*dac_voice
[1];
103 int64_t now
; /* Time at migration */
106 static const int resolution
[4] = { 12, 8, 10, 12 };
108 #define TSC_MODE_NO_SCAN 0x0
109 #define TSC_MODE_XY_SCAN 0x1
110 #define TSC_MODE_XYZ_SCAN 0x2
111 #define TSC_MODE_X 0x3
112 #define TSC_MODE_Y 0x4
113 #define TSC_MODE_Z 0x5
114 #define TSC_MODE_BAT1 0x6
115 #define TSC_MODE_BAT2 0x7
116 #define TSC_MODE_AUX 0x8
117 #define TSC_MODE_AUX_SCAN 0x9
118 #define TSC_MODE_TEMP1 0xa
119 #define TSC_MODE_PORT_SCAN 0xb
120 #define TSC_MODE_TEMP2 0xc
121 #define TSC_MODE_XX_DRV 0xd
122 #define TSC_MODE_YY_DRV 0xe
123 #define TSC_MODE_YX_DRV 0xf
125 static const uint16_t mode_regs
[16] = {
126 0x0000, /* No scan */
127 0x0600, /* X, Y scan */
128 0x0780, /* X, Y, Z scan */
135 0x0010, /* AUX scan */
137 0x0070, /* Port scan */
139 0x0000, /* X+, X- drivers */
140 0x0000, /* Y+, Y- drivers */
141 0x0000, /* Y+, X- drivers */
144 #define X_TRANSFORM(s) \
145 ((s->y * s->tr[0] - s->x * s->tr[1]) / s->tr[2] + s->tr[3])
146 #define Y_TRANSFORM(s) \
147 ((s->y * s->tr[4] - s->x * s->tr[5]) / s->tr[6] + s->tr[7])
148 #define Z1_TRANSFORM(s) \
149 ((400 - ((s)->x >> 7) + ((s)->pressure << 10)) << 4)
150 #define Z2_TRANSFORM(s) \
151 ((4000 + ((s)->y >> 7) - ((s)->pressure << 10)) << 4)
153 #define BAT1_VAL 0x8660
154 #define BAT2_VAL 0x0000
155 #define AUX1_VAL 0x35c0
156 #define AUX2_VAL 0xffff
157 #define TEMP1_VAL 0x8c70
158 #define TEMP2_VAL 0xa5b0
160 #define TSC_POWEROFF_DELAY 50
161 #define TSC_SOFTSTEP_DELAY 50
163 static void tsc210x_reset(TSC210xState
*s
)
175 s
->audio_ctrl1
= 0x0000;
176 s
->audio_ctrl2
= 0x4410;
177 s
->audio_ctrl3
= 0x0000;
182 s
->dac_power
= 0x8540;
184 s
->volume_change
= 0;
186 s
->filter_data
[0x00] = 0x6be3;
187 s
->filter_data
[0x01] = 0x9666;
188 s
->filter_data
[0x02] = 0x675d;
189 s
->filter_data
[0x03] = 0x6be3;
190 s
->filter_data
[0x04] = 0x9666;
191 s
->filter_data
[0x05] = 0x675d;
192 s
->filter_data
[0x06] = 0x7d83;
193 s
->filter_data
[0x07] = 0x84ee;
194 s
->filter_data
[0x08] = 0x7d83;
195 s
->filter_data
[0x09] = 0x84ee;
196 s
->filter_data
[0x0a] = 0x6be3;
197 s
->filter_data
[0x0b] = 0x9666;
198 s
->filter_data
[0x0c] = 0x675d;
199 s
->filter_data
[0x0d] = 0x6be3;
200 s
->filter_data
[0x0e] = 0x9666;
201 s
->filter_data
[0x0f] = 0x675d;
202 s
->filter_data
[0x10] = 0x7d83;
203 s
->filter_data
[0x11] = 0x84ee;
204 s
->filter_data
[0x12] = 0x7d83;
205 s
->filter_data
[0x13] = 0x84ee;
216 qemu_set_irq(s
->pint
, !s
->irq
);
217 qemu_set_irq(s
->davint
, !s
->dav
);
218 qemu_irq_raise(s
->kbint
);
227 /* { rate, dsor, fsref } */
228 static const TSC210xRateInfo tsc2102_rates
[] = {
257 static inline void tsc210x_out_flush(TSC210xState
*s
, int len
)
259 uint8_t *data
= s
->codec
.out
.fifo
+ s
->codec
.out
.start
;
260 uint8_t *end
= data
+ len
;
263 data
+= AUD_write(s
->dac_voice
[0], data
, end
- data
) ?: (end
- data
);
265 s
->codec
.out
.len
-= len
;
266 if (s
->codec
.out
.len
)
267 memmove(s
->codec
.out
.fifo
, end
, s
->codec
.out
.len
);
268 s
->codec
.out
.start
= 0;
271 static void tsc210x_audio_out_cb(TSC210xState
*s
, int free_b
)
273 if (s
->codec
.out
.len
>= free_b
) {
274 tsc210x_out_flush(s
, free_b
);
278 s
->codec
.out
.size
= MIN(free_b
, 16384);
279 qemu_irq_raise(s
->codec
.tx_start
);
282 static void tsc2102_audio_rate_update(TSC210xState
*s
)
284 const TSC210xRateInfo
*rate
;
286 s
->codec
.tx_rate
= 0;
287 s
->codec
.rx_rate
= 0;
288 if (s
->dac_power
& (1 << 15)) /* PWDNC */
291 for (rate
= tsc2102_rates
; rate
->rate
; rate
++)
292 if (rate
->dsor
== (s
->audio_ctrl1
& 0x3f) && /* DACFS */
293 rate
->fsref
== ((s
->audio_ctrl3
>> 13) & 1))/* REFFS */
296 printf("%s: unknown sampling rate configured\n", __func__
);
300 s
->codec
.tx_rate
= rate
->rate
;
303 static void tsc2102_audio_output_update(TSC210xState
*s
)
306 struct audsettings fmt
;
308 if (s
->dac_voice
[0]) {
309 tsc210x_out_flush(s
, s
->codec
.out
.len
);
310 s
->codec
.out
.size
= 0;
311 AUD_set_active_out(s
->dac_voice
[0], 0);
312 AUD_close_out(&s
->card
, s
->dac_voice
[0]);
313 s
->dac_voice
[0] = NULL
;
318 (~s
->dac_power
& (1 << 15)) && /* PWDNC */
319 (~s
->dac_power
& (1 << 10)); /* DAPWDN */
320 if (!enable
|| !s
->codec
.tx_rate
)
323 /* Force our own sampling rate even in slave DAC mode */
326 fmt
.freq
= s
->codec
.tx_rate
;
327 fmt
.fmt
= AUDIO_FORMAT_S16
;
329 s
->dac_voice
[0] = AUD_open_out(&s
->card
, s
->dac_voice
[0],
330 "tsc2102.sink", s
, (void *) tsc210x_audio_out_cb
, &fmt
);
331 if (s
->dac_voice
[0]) {
333 AUD_set_active_out(s
->dac_voice
[0], 1);
337 static uint16_t tsc2102_data_register_read(TSC210xState
*s
, int reg
)
342 return TSC_CUT_RESOLUTION(X_TRANSFORM(s
), s
->precision
) +
348 return TSC_CUT_RESOLUTION(Y_TRANSFORM(s
), s
->precision
) ^
353 return TSC_CUT_RESOLUTION(Z1_TRANSFORM(s
), s
->precision
) -
358 return TSC_CUT_RESOLUTION(Z2_TRANSFORM(s
), s
->precision
) |
361 case 0x04: /* KPData */
362 if ((s
->model
& 0xff00) == 0x2300) {
363 if (s
->kb
.intr
&& (s
->kb
.mode
& 2)) {
365 qemu_irq_raise(s
->kbint
);
372 case 0x05: /* BAT1 */
374 return TSC_CUT_RESOLUTION(BAT1_VAL
, s
->precision
) +
377 case 0x06: /* BAT2 */
379 return TSC_CUT_RESOLUTION(BAT2_VAL
, s
->precision
);
381 case 0x07: /* AUX1 */
383 return TSC_CUT_RESOLUTION(AUX1_VAL
, s
->precision
);
385 case 0x08: /* AUX2 */
389 case 0x09: /* TEMP1 */
391 return TSC_CUT_RESOLUTION(TEMP1_VAL
, s
->precision
) -
394 case 0x0a: /* TEMP2 */
396 return TSC_CUT_RESOLUTION(TEMP2_VAL
, s
->precision
) ^
405 fprintf(stderr
, "tsc2102_data_register_read: "
406 "no such register: 0x%02x\n", reg
);
412 static uint16_t tsc2102_control_register_read(
413 TSC210xState
*s
, int reg
)
416 case 0x00: /* TSC ADC */
417 return (s
->pressure
<< 15) | ((!s
->busy
) << 14) |
418 (s
->nextfunction
<< 10) | (s
->nextprecision
<< 8) | s
->filter
;
420 case 0x01: /* Status / Keypad Control */
421 if ((s
->model
& 0xff00) == 0x2100)
422 return (s
->pin_func
<< 14) | ((!s
->enabled
) << 13) |
423 (s
->host_mode
<< 12) | ((!!s
->dav
) << 11) | s
->dav
;
425 return (s
->kb
.intr
<< 15) | ((s
->kb
.scan
|| !s
->kb
.down
) << 14) |
426 (s
->kb
.debounce
<< 11);
428 case 0x02: /* DAC Control */
429 if ((s
->model
& 0xff00) == 0x2300)
430 return s
->dac_power
& 0x8000;
434 case 0x03: /* Reference */
437 case 0x04: /* Reset */
440 case 0x05: /* Configuration */
443 case 0x06: /* Secondary configuration */
444 if ((s
->model
& 0xff00) == 0x2100)
446 return ((!s
->dav
) << 15) | ((s
->kb
.mode
& 1) << 14) | s
->pll
[2];
448 case 0x10: /* Keypad Mask */
449 if ((s
->model
& 0xff00) == 0x2100)
456 fprintf(stderr
, "tsc2102_control_register_read: "
457 "no such register: 0x%02x\n", reg
);
463 static uint16_t tsc2102_audio_register_read(TSC210xState
*s
, int reg
)
469 case 0x00: /* Audio Control 1 */
470 return s
->audio_ctrl1
;
475 case 0x02: /* DAC Volume Control */
481 case 0x04: /* Audio Control 2 */
484 if (s
->softstep
&& !(s
->dac_power
& (1 << 10))) {
485 l_ch
= (qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL
) >
486 s
->volume_change
+ TSC_SOFTSTEP_DELAY
);
487 r_ch
= (qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL
) >
488 s
->volume_change
+ TSC_SOFTSTEP_DELAY
);
491 return s
->audio_ctrl2
| (l_ch
<< 3) | (r_ch
<< 2);
493 case 0x05: /* Stereo DAC Power Control */
494 return 0x2aa0 | s
->dac_power
|
495 (((s
->dac_power
& (1 << 10)) &&
496 (qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL
) >
497 s
->powerdown
+ TSC_POWEROFF_DELAY
)) << 6);
499 case 0x06: /* Audio Control 3 */
500 val
= s
->audio_ctrl3
| 0x0001;
501 s
->audio_ctrl3
&= 0xff3f;
504 case 0x07: /* LCH_BASS_BOOST_N0 */
505 case 0x08: /* LCH_BASS_BOOST_N1 */
506 case 0x09: /* LCH_BASS_BOOST_N2 */
507 case 0x0a: /* LCH_BASS_BOOST_N3 */
508 case 0x0b: /* LCH_BASS_BOOST_N4 */
509 case 0x0c: /* LCH_BASS_BOOST_N5 */
510 case 0x0d: /* LCH_BASS_BOOST_D1 */
511 case 0x0e: /* LCH_BASS_BOOST_D2 */
512 case 0x0f: /* LCH_BASS_BOOST_D4 */
513 case 0x10: /* LCH_BASS_BOOST_D5 */
514 case 0x11: /* RCH_BASS_BOOST_N0 */
515 case 0x12: /* RCH_BASS_BOOST_N1 */
516 case 0x13: /* RCH_BASS_BOOST_N2 */
517 case 0x14: /* RCH_BASS_BOOST_N3 */
518 case 0x15: /* RCH_BASS_BOOST_N4 */
519 case 0x16: /* RCH_BASS_BOOST_N5 */
520 case 0x17: /* RCH_BASS_BOOST_D1 */
521 case 0x18: /* RCH_BASS_BOOST_D2 */
522 case 0x19: /* RCH_BASS_BOOST_D4 */
523 case 0x1a: /* RCH_BASS_BOOST_D5 */
524 return s
->filter_data
[reg
- 0x07];
526 case 0x1b: /* PLL Programmability 1 */
529 case 0x1c: /* PLL Programmability 2 */
532 case 0x1d: /* Audio Control 4 */
533 return (!s
->softstep
) << 14;
537 fprintf(stderr
, "tsc2102_audio_register_read: "
538 "no such register: 0x%02x\n", reg
);
544 static void tsc2102_data_register_write(
545 TSC210xState
*s
, int reg
, uint16_t value
)
552 case 0x05: /* BAT1 */
553 case 0x06: /* BAT2 */
554 case 0x07: /* AUX1 */
555 case 0x08: /* AUX2 */
556 case 0x09: /* TEMP1 */
557 case 0x0a: /* TEMP2 */
561 qemu_log_mask(LOG_GUEST_ERROR
, "tsc2102_data_register_write: "
562 "no such register: 0x%02x\n", reg
);
566 static void tsc2102_control_register_write(
567 TSC210xState
*s
, int reg
, uint16_t value
)
570 case 0x00: /* TSC ADC */
571 s
->host_mode
= value
>> 15;
572 s
->enabled
= !(value
& 0x4000);
573 if (s
->busy
&& !s
->enabled
)
575 s
->busy
= s
->busy
&& s
->enabled
;
576 s
->nextfunction
= (value
>> 10) & 0xf;
577 s
->nextprecision
= (value
>> 8) & 3;
578 s
->filter
= value
& 0xff;
581 case 0x01: /* Status / Keypad Control */
582 if ((s
->model
& 0xff00) == 0x2100)
583 s
->pin_func
= value
>> 14;
585 s
->kb
.scan
= (value
>> 14) & 1;
586 s
->kb
.debounce
= (value
>> 11) & 7;
587 if (s
->kb
.intr
&& s
->kb
.scan
) {
589 qemu_irq_raise(s
->kbint
);
594 case 0x02: /* DAC Control */
595 if ((s
->model
& 0xff00) == 0x2300) {
596 s
->dac_power
&= 0x7fff;
597 s
->dac_power
|= 0x8000 & value
;
602 case 0x03: /* Reference */
603 s
->ref
= value
& 0x1f;
606 case 0x04: /* Reset */
607 if (value
== 0xbb00) {
613 fprintf(stderr
, "tsc2102_control_register_write: "
614 "wrong value written into RESET\n");
619 case 0x05: /* Configuration */
620 s
->timing
= value
& 0x3f;
623 fprintf(stderr
, "tsc2102_control_register_write: "
624 "wrong value written into CONFIG\n");
628 case 0x06: /* Secondary configuration */
629 if ((s
->model
& 0xff00) == 0x2100)
631 s
->kb
.mode
= value
>> 14;
632 s
->pll
[2] = value
& 0x3ffff;
635 case 0x10: /* Keypad Mask */
636 if ((s
->model
& 0xff00) == 0x2100)
643 qemu_log_mask(LOG_GUEST_ERROR
, "tsc2102_control_register_write: "
644 "no such register: 0x%02x\n", reg
);
648 static void tsc2102_audio_register_write(
649 TSC210xState
*s
, int reg
, uint16_t value
)
652 case 0x00: /* Audio Control 1 */
653 s
->audio_ctrl1
= value
& 0x0f3f;
655 if ((value
& ~0x0f3f) || ((value
& 7) != ((value
>> 3) & 7)))
656 fprintf(stderr
, "tsc2102_audio_register_write: "
657 "wrong value written into Audio 1\n");
659 tsc2102_audio_rate_update(s
);
660 tsc2102_audio_output_update(s
);
666 fprintf(stderr
, "tsc2102_audio_register_write: "
667 "wrong value written into reg 0x01\n");
671 case 0x02: /* DAC Volume Control */
673 s
->volume_change
= qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL
);
679 fprintf(stderr
, "tsc2102_audio_register_write: "
680 "wrong value written into reg 0x03\n");
684 case 0x04: /* Audio Control 2 */
685 s
->audio_ctrl2
= value
& 0xf7f2;
688 fprintf(stderr
, "tsc2102_audio_register_write: "
689 "wrong value written into Audio 2\n");
693 case 0x05: /* Stereo DAC Power Control */
694 if ((value
& ~s
->dac_power
) & (1 << 10))
695 s
->powerdown
= qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL
);
697 s
->dac_power
= value
& 0x9543;
699 if ((value
& ~0x9543) != 0x2aa0)
700 fprintf(stderr
, "tsc2102_audio_register_write: "
701 "wrong value written into Power\n");
703 tsc2102_audio_rate_update(s
);
704 tsc2102_audio_output_update(s
);
707 case 0x06: /* Audio Control 3 */
708 s
->audio_ctrl3
&= 0x00c0;
709 s
->audio_ctrl3
|= value
& 0xf800;
712 fprintf(stderr
, "tsc2102_audio_register_write: "
713 "wrong value written into Audio 3\n");
715 tsc2102_audio_output_update(s
);
718 case 0x07: /* LCH_BASS_BOOST_N0 */
719 case 0x08: /* LCH_BASS_BOOST_N1 */
720 case 0x09: /* LCH_BASS_BOOST_N2 */
721 case 0x0a: /* LCH_BASS_BOOST_N3 */
722 case 0x0b: /* LCH_BASS_BOOST_N4 */
723 case 0x0c: /* LCH_BASS_BOOST_N5 */
724 case 0x0d: /* LCH_BASS_BOOST_D1 */
725 case 0x0e: /* LCH_BASS_BOOST_D2 */
726 case 0x0f: /* LCH_BASS_BOOST_D4 */
727 case 0x10: /* LCH_BASS_BOOST_D5 */
728 case 0x11: /* RCH_BASS_BOOST_N0 */
729 case 0x12: /* RCH_BASS_BOOST_N1 */
730 case 0x13: /* RCH_BASS_BOOST_N2 */
731 case 0x14: /* RCH_BASS_BOOST_N3 */
732 case 0x15: /* RCH_BASS_BOOST_N4 */
733 case 0x16: /* RCH_BASS_BOOST_N5 */
734 case 0x17: /* RCH_BASS_BOOST_D1 */
735 case 0x18: /* RCH_BASS_BOOST_D2 */
736 case 0x19: /* RCH_BASS_BOOST_D4 */
737 case 0x1a: /* RCH_BASS_BOOST_D5 */
738 s
->filter_data
[reg
- 0x07] = value
;
741 case 0x1b: /* PLL Programmability 1 */
742 s
->pll
[0] = value
& 0xfffc;
745 fprintf(stderr
, "tsc2102_audio_register_write: "
746 "wrong value written into PLL 1\n");
750 case 0x1c: /* PLL Programmability 2 */
751 s
->pll
[1] = value
& 0xfffc;
754 fprintf(stderr
, "tsc2102_audio_register_write: "
755 "wrong value written into PLL 2\n");
759 case 0x1d: /* Audio Control 4 */
760 s
->softstep
= !(value
& 0x4000);
763 fprintf(stderr
, "tsc2102_audio_register_write: "
764 "wrong value written into Audio 4\n");
769 qemu_log_mask(LOG_GUEST_ERROR
, "tsc2102_audio_register_write: "
770 "no such register: 0x%02x\n", reg
);
774 /* This handles most of the chip logic. */
775 static void tsc210x_pin_update(TSC210xState
*s
)
780 switch (s
->pin_func
) {
782 pin_state
= s
->pressure
;
785 pin_state
= !!s
->dav
;
789 pin_state
= s
->pressure
&& !s
->dav
;
795 if (pin_state
!= s
->irq
) {
797 qemu_set_irq(s
->pint
, !s
->irq
);
800 switch (s
->nextfunction
) {
801 case TSC_MODE_XY_SCAN
:
802 case TSC_MODE_XYZ_SCAN
:
822 case TSC_MODE_AUX_SCAN
:
823 case TSC_MODE_PORT_SCAN
:
826 case TSC_MODE_NO_SCAN
:
827 case TSC_MODE_XX_DRV
:
828 case TSC_MODE_YY_DRV
:
829 case TSC_MODE_YX_DRV
:
834 if (!s
->enabled
|| s
->busy
|| s
->dav
)
838 s
->precision
= s
->nextprecision
;
839 s
->function
= s
->nextfunction
;
840 expires
= qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL
) +
841 (NANOSECONDS_PER_SECOND
>> 10);
842 timer_mod(s
->timer
, expires
);
845 static uint16_t tsc210x_read(TSC210xState
*s
)
847 uint16_t ret
= 0x0000;
850 fprintf(stderr
, "tsc210x_read: SPI underrun!\n");
853 case TSC_DATA_REGISTERS_PAGE
:
854 ret
= tsc2102_data_register_read(s
, s
->offset
);
856 qemu_irq_raise(s
->davint
);
858 case TSC_CONTROL_REGISTERS_PAGE
:
859 ret
= tsc2102_control_register_read(s
, s
->offset
);
861 case TSC_AUDIO_REGISTERS_PAGE
:
862 ret
= tsc2102_audio_register_read(s
, s
->offset
);
865 hw_error("tsc210x_read: wrong memory page\n");
868 tsc210x_pin_update(s
);
870 /* Allow sequential reads. */
876 static void tsc210x_write(TSC210xState
*s
, uint16_t value
)
879 * This is a two-state state machine for reading
880 * command and data every second time.
883 s
->command
= (value
>> 15) != 0;
884 s
->page
= (value
>> 11) & 0x0f;
885 s
->offset
= (value
>> 5) & 0x3f;
889 fprintf(stderr
, "tsc210x_write: SPI overrun!\n");
892 case TSC_DATA_REGISTERS_PAGE
:
893 tsc2102_data_register_write(s
, s
->offset
, value
);
895 case TSC_CONTROL_REGISTERS_PAGE
:
896 tsc2102_control_register_write(s
, s
->offset
, value
);
898 case TSC_AUDIO_REGISTERS_PAGE
:
899 tsc2102_audio_register_write(s
, s
->offset
, value
);
902 hw_error("tsc210x_write: wrong memory page\n");
905 tsc210x_pin_update(s
);
910 uint32_t tsc210x_txrx(void *opaque
, uint32_t value
, int len
)
912 TSC210xState
*s
= opaque
;
916 qemu_log_mask(LOG_GUEST_ERROR
,
917 "%s: bad SPI word width %i\n", __func__
, len
);
921 /* TODO: sequential reads etc - how do we make sure the host doesn't
922 * unintentionally read out a conversion result from a register while
923 * transmitting the command word of the next command? */
924 if (!value
|| (s
->state
&& s
->command
))
925 ret
= tsc210x_read(s
);
926 if (value
|| (s
->state
&& !s
->command
))
927 tsc210x_write(s
, value
);
932 static void tsc210x_timer_tick(void *opaque
)
934 TSC210xState
*s
= opaque
;
936 /* Timer ticked -- a set of conversions has been finished. */
942 s
->dav
|= mode_regs
[s
->function
];
943 tsc210x_pin_update(s
);
944 qemu_irq_lower(s
->davint
);
947 static void tsc210x_touchscreen_event(void *opaque
,
948 int x
, int y
, int z
, int buttons_state
)
950 TSC210xState
*s
= opaque
;
957 s
->pressure
= !!buttons_state
;
960 * Note: We would get better responsiveness in the guest by
961 * signaling TS events immediately, but for now we simulate
962 * the first conversion delay for sake of correctness.
964 if (p
!= s
->pressure
)
965 tsc210x_pin_update(s
);
968 static void tsc210x_i2s_swallow(TSC210xState
*s
)
971 tsc210x_out_flush(s
, s
->codec
.out
.len
);
973 s
->codec
.out
.len
= 0;
976 static void tsc210x_i2s_set_rate(TSC210xState
*s
, int in
, int out
)
978 s
->i2s_tx_rate
= out
;
982 static int tsc210x_pre_save(void *opaque
)
984 TSC210xState
*s
= (TSC210xState
*) opaque
;
985 s
->now
= qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL
);
990 static int tsc210x_post_load(void *opaque
, int version_id
)
992 TSC210xState
*s
= (TSC210xState
*) opaque
;
993 int64_t now
= qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL
);
995 if (s
->function
>= ARRAY_SIZE(mode_regs
)) {
998 if (s
->nextfunction
>= ARRAY_SIZE(mode_regs
)) {
1001 if (s
->precision
>= ARRAY_SIZE(resolution
)) {
1004 if (s
->nextprecision
>= ARRAY_SIZE(resolution
)) {
1008 s
->volume_change
-= s
->now
;
1009 s
->volume_change
+= now
;
1010 s
->powerdown
-= s
->now
;
1011 s
->powerdown
+= now
;
1013 s
->busy
= timer_pending(s
->timer
);
1014 qemu_set_irq(s
->pint
, !s
->irq
);
1015 qemu_set_irq(s
->davint
, !s
->dav
);
1020 static const VMStateField vmstatefields_tsc210x
[] = {
1021 VMSTATE_BOOL(enabled
, TSC210xState
),
1022 VMSTATE_BOOL(host_mode
, TSC210xState
),
1023 VMSTATE_BOOL(irq
, TSC210xState
),
1024 VMSTATE_BOOL(command
, TSC210xState
),
1025 VMSTATE_BOOL(pressure
, TSC210xState
),
1026 VMSTATE_BOOL(softstep
, TSC210xState
),
1027 VMSTATE_BOOL(state
, TSC210xState
),
1028 VMSTATE_UINT16(dav
, TSC210xState
),
1029 VMSTATE_INT32(x
, TSC210xState
),
1030 VMSTATE_INT32(y
, TSC210xState
),
1031 VMSTATE_UINT8(offset
, TSC210xState
),
1032 VMSTATE_UINT8(page
, TSC210xState
),
1033 VMSTATE_UINT8(filter
, TSC210xState
),
1034 VMSTATE_UINT8(pin_func
, TSC210xState
),
1035 VMSTATE_UINT8(ref
, TSC210xState
),
1036 VMSTATE_UINT8(timing
, TSC210xState
),
1037 VMSTATE_UINT8(noise
, TSC210xState
),
1038 VMSTATE_UINT8(function
, TSC210xState
),
1039 VMSTATE_UINT8(nextfunction
, TSC210xState
),
1040 VMSTATE_UINT8(precision
, TSC210xState
),
1041 VMSTATE_UINT8(nextprecision
, TSC210xState
),
1042 VMSTATE_UINT16(audio_ctrl1
, TSC210xState
),
1043 VMSTATE_UINT16(audio_ctrl2
, TSC210xState
),
1044 VMSTATE_UINT16(audio_ctrl3
, TSC210xState
),
1045 VMSTATE_UINT16_ARRAY(pll
, TSC210xState
, 3),
1046 VMSTATE_UINT16(volume
, TSC210xState
),
1047 VMSTATE_UINT16(dac_power
, TSC210xState
),
1048 VMSTATE_INT64(volume_change
, TSC210xState
),
1049 VMSTATE_INT64(powerdown
, TSC210xState
),
1050 VMSTATE_INT64(now
, TSC210xState
),
1051 VMSTATE_UINT16_ARRAY(filter_data
, TSC210xState
, 0x14),
1052 VMSTATE_TIMER_PTR(timer
, TSC210xState
),
1053 VMSTATE_END_OF_LIST()
1056 static const VMStateDescription vmstate_tsc2102
= {
1059 .minimum_version_id
= 1,
1060 .pre_save
= tsc210x_pre_save
,
1061 .post_load
= tsc210x_post_load
,
1062 .fields
= vmstatefields_tsc210x
,
1065 static const VMStateDescription vmstate_tsc2301
= {
1068 .minimum_version_id
= 1,
1069 .pre_save
= tsc210x_pre_save
,
1070 .post_load
= tsc210x_post_load
,
1071 .fields
= vmstatefields_tsc210x
,
1074 static void tsc210x_init(TSC210xState
*s
,
1076 const VMStateDescription
*vmsd
)
1088 s
->chip
.send
= (void *) tsc210x_write
;
1089 s
->chip
.receive
= (void *) tsc210x_read
;
1091 s
->codec
.opaque
= s
;
1092 s
->codec
.tx_swallow
= (void *) tsc210x_i2s_swallow
;
1093 s
->codec
.set_rate
= (void *) tsc210x_i2s_set_rate
;
1094 s
->codec
.in
.fifo
= s
->in_fifo
;
1095 s
->codec
.out
.fifo
= s
->out_fifo
;
1099 qemu_add_mouse_event_handler(tsc210x_touchscreen_event
, s
, 1, name
);
1101 if (current_machine
->audiodev
) {
1102 s
->card
.name
= g_strdup(current_machine
->audiodev
);
1103 s
->card
.state
= audio_state_by_name(s
->card
.name
, &error_fatal
);
1105 AUD_register_card(s
->name
, &s
->card
, &error_fatal
);
1107 qemu_register_reset((void *) tsc210x_reset
, s
);
1108 vmstate_register(NULL
, 0, vmsd
, s
);
1111 uWireSlave
*tsc2102_init(qemu_irq pint
)
1115 s
= g_new0(TSC210xState
, 1);
1119 s
->precision
= s
->nextprecision
= 0;
1120 s
->timer
= timer_new_ns(QEMU_CLOCK_VIRTUAL
, tsc210x_timer_tick
, s
);
1123 s
->name
= "tsc2102";
1125 tsc210x_init(s
, "QEMU TSC2102-driven Touchscreen", &vmstate_tsc2102
);
1130 uWireSlave
*tsc2301_init(qemu_irq penirq
, qemu_irq kbirq
, qemu_irq dav
)
1134 s
= g_new0(TSC210xState
, 1);
1138 s
->precision
= s
->nextprecision
= 0;
1139 s
->timer
= timer_new_ns(QEMU_CLOCK_VIRTUAL
, tsc210x_timer_tick
, s
);
1144 s
->name
= "tsc2301";
1146 tsc210x_init(s
, "QEMU TSC2301-driven Touchscreen", &vmstate_tsc2301
);
1151 I2SCodec
*tsc210x_codec(uWireSlave
*chip
)
1153 TSC210xState
*s
= (TSC210xState
*) chip
->opaque
;
1159 * Use tslib generated calibration data to generate ADC input values
1160 * from the touchscreen. Assuming 12-bit precision was used during
1161 * tslib calibration.
1163 void tsc210x_set_transform(uWireSlave
*chip
, const MouseTransformInfo
*info
)
1165 TSC210xState
*s
= (TSC210xState
*) chip
->opaque
;
1169 ltr
[0] = (int64_t) info
->a
[1] * info
->y
;
1170 ltr
[1] = (int64_t) info
->a
[4] * info
->x
;
1171 ltr
[2] = (int64_t) info
->a
[1] * info
->a
[3] -
1172 (int64_t) info
->a
[4] * info
->a
[0];
1173 ltr
[3] = (int64_t) info
->a
[2] * info
->a
[4] -
1174 (int64_t) info
->a
[5] * info
->a
[1];
1175 ltr
[4] = (int64_t) info
->a
[0] * info
->y
;
1176 ltr
[5] = (int64_t) info
->a
[3] * info
->x
;
1177 ltr
[6] = (int64_t) info
->a
[4] * info
->a
[0] -
1178 (int64_t) info
->a
[1] * info
->a
[3];
1179 ltr
[7] = (int64_t) info
->a
[2] * info
->a
[3] -
1180 (int64_t) info
->a
[5] * info
->a
[0];
1182 /* Avoid integer overflow */
1183 s
->tr
[0] = ltr
[0] >> 11;
1184 s
->tr
[1] = ltr
[1] >> 11;
1185 s
->tr
[2] = muldiv64(ltr
[2], 1, info
->a
[6]);
1186 s
->tr
[3] = muldiv64(ltr
[3], 1 << 4, ltr
[2]);
1187 s
->tr
[4] = ltr
[4] >> 11;
1188 s
->tr
[5] = ltr
[5] >> 11;
1189 s
->tr
[6] = muldiv64(ltr
[6], 1, info
->a
[6]);
1190 s
->tr
[7] = muldiv64(ltr
[7], 1 << 4, ltr
[6]);
1193 /* This version assumes touchscreen X & Y axis are parallel or
1194 * perpendicular to LCD's X & Y axis in some way. */
1195 if (abs(info
->a
[0]) > abs(info
->a
[1])) {
1197 s
->tr
[1] = -info
->a
[6] * info
->x
;
1198 s
->tr
[2] = info
->a
[0];
1199 s
->tr
[3] = -info
->a
[2] / info
->a
[0];
1200 s
->tr
[4] = info
->a
[6] * info
->y
;
1202 s
->tr
[6] = info
->a
[4];
1203 s
->tr
[7] = -info
->a
[5] / info
->a
[4];
1205 s
->tr
[0] = info
->a
[6] * info
->y
;
1207 s
->tr
[2] = info
->a
[1];
1208 s
->tr
[3] = -info
->a
[2] / info
->a
[1];
1210 s
->tr
[5] = -info
->a
[6] * info
->x
;
1211 s
->tr
[6] = info
->a
[3];
1212 s
->tr
[7] = -info
->a
[5] / info
->a
[3];
1224 void tsc210x_key_event(uWireSlave
*chip
, int key
, int down
)
1226 TSC210xState
*s
= (TSC210xState
*) chip
->opaque
;
1229 s
->kb
.down
|= 1 << key
;
1231 s
->kb
.down
&= ~(1 << key
);
1233 if (down
&& (s
->kb
.down
& ~s
->kb
.mask
) && !s
->kb
.intr
) {
1235 qemu_irq_lower(s
->kbint
);
1236 } else if (s
->kb
.intr
&& !(s
->kb
.down
& ~s
->kb
.mask
) &&
1237 !(s
->kb
.mode
& 1)) {
1239 qemu_irq_raise(s
->kbint
);