X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=qemu%2Fhw%2Finput%2Ftsc210x.c;fp=qemu%2Fhw%2Finput%2Ftsc210x.c;h=fae3385636017193ad205090c98b78ceeecaa018;hb=e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb;hp=0000000000000000000000000000000000000000;hpb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;p=kvmfornfv.git diff --git a/qemu/hw/input/tsc210x.c b/qemu/hw/input/tsc210x.c new file mode 100644 index 000000000..fae338563 --- /dev/null +++ b/qemu/hw/input/tsc210x.c @@ -0,0 +1,1275 @@ +/* + * TI TSC2102 (touchscreen/sensors/audio controller) emulator. + * TI TSC2301 (touchscreen/sensors/keypad). + * + * Copyright (c) 2006 Andrzej Zaborowski + * Copyright (C) 2008 Nokia Corporation + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 or + * (at your option) version 3 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, see . + */ + +#include "hw/hw.h" +#include "audio/audio.h" +#include "qemu/timer.h" +#include "ui/console.h" +#include "hw/arm/omap.h" /* For I2SCodec and uWireSlave */ +#include "hw/devices.h" + +#define TSC_DATA_REGISTERS_PAGE 0x0 +#define TSC_CONTROL_REGISTERS_PAGE 0x1 +#define TSC_AUDIO_REGISTERS_PAGE 0x2 + +#define TSC_VERBOSE + +#define TSC_CUT_RESOLUTION(value, p) ((value) >> (16 - resolution[p])) + +typedef struct { + qemu_irq pint; + qemu_irq kbint; + qemu_irq davint; + QEMUTimer *timer; + QEMUSoundCard card; + uWireSlave chip; + I2SCodec codec; + uint8_t in_fifo[16384]; + uint8_t out_fifo[16384]; + uint16_t model; + + int x, y; + int pressure; + + int state, page, offset, irq; + uint16_t command, dav; + + int busy; + int enabled; + int host_mode; + int function; + int nextfunction; + int precision; + int nextprecision; + int filter; + int pin_func; + int ref; + int timing; + int noise; + + uint16_t audio_ctrl1; + uint16_t audio_ctrl2; + uint16_t audio_ctrl3; + uint16_t pll[3]; + uint16_t volume; + int64_t volume_change; + int softstep; + uint16_t dac_power; + int64_t powerdown; + uint16_t filter_data[0x14]; + + const char *name; + SWVoiceIn *adc_voice[1]; + SWVoiceOut *dac_voice[1]; + int i2s_rx_rate; + int i2s_tx_rate; + + int tr[8]; + + struct { + uint16_t down; + uint16_t mask; + int scan; + int debounce; + int mode; + int intr; + } kb; +} TSC210xState; + +static const int resolution[4] = { 12, 8, 10, 12 }; + +#define TSC_MODE_NO_SCAN 0x0 +#define TSC_MODE_XY_SCAN 0x1 +#define TSC_MODE_XYZ_SCAN 0x2 +#define TSC_MODE_X 0x3 +#define TSC_MODE_Y 0x4 +#define TSC_MODE_Z 0x5 +#define TSC_MODE_BAT1 0x6 +#define TSC_MODE_BAT2 0x7 +#define TSC_MODE_AUX 0x8 +#define TSC_MODE_AUX_SCAN 0x9 +#define TSC_MODE_TEMP1 0xa +#define TSC_MODE_PORT_SCAN 0xb +#define TSC_MODE_TEMP2 0xc +#define TSC_MODE_XX_DRV 0xd +#define TSC_MODE_YY_DRV 0xe +#define TSC_MODE_YX_DRV 0xf + +static const uint16_t mode_regs[16] = { + 0x0000, /* No scan */ + 0x0600, /* X, Y scan */ + 0x0780, /* X, Y, Z scan */ + 0x0400, /* X */ + 0x0200, /* Y */ + 0x0180, /* Z */ + 0x0040, /* BAT1 */ + 0x0030, /* BAT2 */ + 0x0010, /* AUX */ + 0x0010, /* AUX scan */ + 0x0004, /* TEMP1 */ + 0x0070, /* Port scan */ + 0x0002, /* TEMP2 */ + 0x0000, /* X+, X- drivers */ + 0x0000, /* Y+, Y- drivers */ + 0x0000, /* Y+, X- drivers */ +}; + +#define X_TRANSFORM(s) \ + ((s->y * s->tr[0] - s->x * s->tr[1]) / s->tr[2] + s->tr[3]) +#define Y_TRANSFORM(s) \ + ((s->y * s->tr[4] - s->x * s->tr[5]) / s->tr[6] + s->tr[7]) +#define Z1_TRANSFORM(s) \ + ((400 - ((s)->x >> 7) + ((s)->pressure << 10)) << 4) +#define Z2_TRANSFORM(s) \ + ((4000 + ((s)->y >> 7) - ((s)->pressure << 10)) << 4) + +#define BAT1_VAL 0x8660 +#define BAT2_VAL 0x0000 +#define AUX1_VAL 0x35c0 +#define AUX2_VAL 0xffff +#define TEMP1_VAL 0x8c70 +#define TEMP2_VAL 0xa5b0 + +#define TSC_POWEROFF_DELAY 50 +#define TSC_SOFTSTEP_DELAY 50 + +static void tsc210x_reset(TSC210xState *s) +{ + s->state = 0; + s->pin_func = 2; + s->enabled = 0; + s->busy = 0; + s->nextfunction = 0; + s->ref = 0; + s->timing = 0; + s->irq = 0; + s->dav = 0; + + s->audio_ctrl1 = 0x0000; + s->audio_ctrl2 = 0x4410; + s->audio_ctrl3 = 0x0000; + s->pll[0] = 0x1004; + s->pll[1] = 0x0000; + s->pll[2] = 0x1fff; + s->volume = 0xffff; + s->dac_power = 0x8540; + s->softstep = 1; + s->volume_change = 0; + s->powerdown = 0; + s->filter_data[0x00] = 0x6be3; + s->filter_data[0x01] = 0x9666; + s->filter_data[0x02] = 0x675d; + s->filter_data[0x03] = 0x6be3; + s->filter_data[0x04] = 0x9666; + s->filter_data[0x05] = 0x675d; + s->filter_data[0x06] = 0x7d83; + s->filter_data[0x07] = 0x84ee; + s->filter_data[0x08] = 0x7d83; + s->filter_data[0x09] = 0x84ee; + s->filter_data[0x0a] = 0x6be3; + s->filter_data[0x0b] = 0x9666; + s->filter_data[0x0c] = 0x675d; + s->filter_data[0x0d] = 0x6be3; + s->filter_data[0x0e] = 0x9666; + s->filter_data[0x0f] = 0x675d; + s->filter_data[0x10] = 0x7d83; + s->filter_data[0x11] = 0x84ee; + s->filter_data[0x12] = 0x7d83; + s->filter_data[0x13] = 0x84ee; + + s->i2s_tx_rate = 0; + s->i2s_rx_rate = 0; + + s->kb.scan = 1; + s->kb.debounce = 0; + s->kb.mask = 0x0000; + s->kb.mode = 3; + s->kb.intr = 0; + + qemu_set_irq(s->pint, !s->irq); + qemu_set_irq(s->davint, !s->dav); + qemu_irq_raise(s->kbint); +} + +typedef struct { + int rate; + int dsor; + int fsref; +} TSC210xRateInfo; + +/* { rate, dsor, fsref } */ +static const TSC210xRateInfo tsc2102_rates[] = { + /* Fsref / 6.0 */ + { 7350, 63, 1 }, + { 8000, 63, 0 }, + /* Fsref / 6.0 */ + { 7350, 54, 1 }, + { 8000, 54, 0 }, + /* Fsref / 5.0 */ + { 8820, 45, 1 }, + { 9600, 45, 0 }, + /* Fsref / 4.0 */ + { 11025, 36, 1 }, + { 12000, 36, 0 }, + /* Fsref / 3.0 */ + { 14700, 27, 1 }, + { 16000, 27, 0 }, + /* Fsref / 2.0 */ + { 22050, 18, 1 }, + { 24000, 18, 0 }, + /* Fsref / 1.5 */ + { 29400, 9, 1 }, + { 32000, 9, 0 }, + /* Fsref */ + { 44100, 0, 1 }, + { 48000, 0, 0 }, + + { 0, 0, 0 }, +}; + +static inline void tsc210x_out_flush(TSC210xState *s, int len) +{ + uint8_t *data = s->codec.out.fifo + s->codec.out.start; + uint8_t *end = data + len; + + while (data < end) + data += AUD_write(s->dac_voice[0], data, end - data) ?: (end - data); + + s->codec.out.len -= len; + if (s->codec.out.len) + memmove(s->codec.out.fifo, end, s->codec.out.len); + s->codec.out.start = 0; +} + +static void tsc210x_audio_out_cb(TSC210xState *s, int free_b) +{ + if (s->codec.out.len >= free_b) { + tsc210x_out_flush(s, free_b); + return; + } + + s->codec.out.size = MIN(free_b, 16384); + qemu_irq_raise(s->codec.tx_start); +} + +static void tsc2102_audio_rate_update(TSC210xState *s) +{ + const TSC210xRateInfo *rate; + + s->codec.tx_rate = 0; + s->codec.rx_rate = 0; + if (s->dac_power & (1 << 15)) /* PWDNC */ + return; + + for (rate = tsc2102_rates; rate->rate; rate ++) + if (rate->dsor == (s->audio_ctrl1 & 0x3f) && /* DACFS */ + rate->fsref == ((s->audio_ctrl3 >> 13) & 1))/* REFFS */ + break; + if (!rate->rate) { + printf("%s: unknown sampling rate configured\n", __FUNCTION__); + return; + } + + s->codec.tx_rate = rate->rate; +} + +static void tsc2102_audio_output_update(TSC210xState *s) +{ + int enable; + struct audsettings fmt; + + if (s->dac_voice[0]) { + tsc210x_out_flush(s, s->codec.out.len); + s->codec.out.size = 0; + AUD_set_active_out(s->dac_voice[0], 0); + AUD_close_out(&s->card, s->dac_voice[0]); + s->dac_voice[0] = NULL; + } + s->codec.cts = 0; + + enable = + (~s->dac_power & (1 << 15)) && /* PWDNC */ + (~s->dac_power & (1 << 10)); /* DAPWDN */ + if (!enable || !s->codec.tx_rate) + return; + + /* Force our own sampling rate even in slave DAC mode */ + fmt.endianness = 0; + fmt.nchannels = 2; + fmt.freq = s->codec.tx_rate; + fmt.fmt = AUD_FMT_S16; + + s->dac_voice[0] = AUD_open_out(&s->card, s->dac_voice[0], + "tsc2102.sink", s, (void *) tsc210x_audio_out_cb, &fmt); + if (s->dac_voice[0]) { + s->codec.cts = 1; + AUD_set_active_out(s->dac_voice[0], 1); + } +} + +static uint16_t tsc2102_data_register_read(TSC210xState *s, int reg) +{ + switch (reg) { + case 0x00: /* X */ + s->dav &= 0xfbff; + return TSC_CUT_RESOLUTION(X_TRANSFORM(s), s->precision) + + (s->noise & 3); + + case 0x01: /* Y */ + s->noise ++; + s->dav &= 0xfdff; + return TSC_CUT_RESOLUTION(Y_TRANSFORM(s), s->precision) ^ + (s->noise & 3); + + case 0x02: /* Z1 */ + s->dav &= 0xfeff; + return TSC_CUT_RESOLUTION(Z1_TRANSFORM(s), s->precision) - + (s->noise & 3); + + case 0x03: /* Z2 */ + s->dav &= 0xff7f; + return TSC_CUT_RESOLUTION(Z2_TRANSFORM(s), s->precision) | + (s->noise & 3); + + case 0x04: /* KPData */ + if ((s->model & 0xff00) == 0x2300) { + if (s->kb.intr && (s->kb.mode & 2)) { + s->kb.intr = 0; + qemu_irq_raise(s->kbint); + } + return s->kb.down; + } + + return 0xffff; + + case 0x05: /* BAT1 */ + s->dav &= 0xffbf; + return TSC_CUT_RESOLUTION(BAT1_VAL, s->precision) + + (s->noise & 6); + + case 0x06: /* BAT2 */ + s->dav &= 0xffdf; + return TSC_CUT_RESOLUTION(BAT2_VAL, s->precision); + + case 0x07: /* AUX1 */ + s->dav &= 0xffef; + return TSC_CUT_RESOLUTION(AUX1_VAL, s->precision); + + case 0x08: /* AUX2 */ + s->dav &= 0xfff7; + return 0xffff; + + case 0x09: /* TEMP1 */ + s->dav &= 0xfffb; + return TSC_CUT_RESOLUTION(TEMP1_VAL, s->precision) - + (s->noise & 5); + + case 0x0a: /* TEMP2 */ + s->dav &= 0xfffd; + return TSC_CUT_RESOLUTION(TEMP2_VAL, s->precision) ^ + (s->noise & 3); + + case 0x0b: /* DAC */ + s->dav &= 0xfffe; + return 0xffff; + + default: +#ifdef TSC_VERBOSE + fprintf(stderr, "tsc2102_data_register_read: " + "no such register: 0x%02x\n", reg); +#endif + return 0xffff; + } +} + +static uint16_t tsc2102_control_register_read( + TSC210xState *s, int reg) +{ + switch (reg) { + case 0x00: /* TSC ADC */ + return (s->pressure << 15) | ((!s->busy) << 14) | + (s->nextfunction << 10) | (s->nextprecision << 8) | s->filter; + + case 0x01: /* Status / Keypad Control */ + if ((s->model & 0xff00) == 0x2100) + return (s->pin_func << 14) | ((!s->enabled) << 13) | + (s->host_mode << 12) | ((!!s->dav) << 11) | s->dav; + else + return (s->kb.intr << 15) | ((s->kb.scan || !s->kb.down) << 14) | + (s->kb.debounce << 11); + + case 0x02: /* DAC Control */ + if ((s->model & 0xff00) == 0x2300) + return s->dac_power & 0x8000; + else + goto bad_reg; + + case 0x03: /* Reference */ + return s->ref; + + case 0x04: /* Reset */ + return 0xffff; + + case 0x05: /* Configuration */ + return s->timing; + + case 0x06: /* Secondary configuration */ + if ((s->model & 0xff00) == 0x2100) + goto bad_reg; + return ((!s->dav) << 15) | ((s->kb.mode & 1) << 14) | s->pll[2]; + + case 0x10: /* Keypad Mask */ + if ((s->model & 0xff00) == 0x2100) + goto bad_reg; + return s->kb.mask; + + default: + bad_reg: +#ifdef TSC_VERBOSE + fprintf(stderr, "tsc2102_control_register_read: " + "no such register: 0x%02x\n", reg); +#endif + return 0xffff; + } +} + +static uint16_t tsc2102_audio_register_read(TSC210xState *s, int reg) +{ + int l_ch, r_ch; + uint16_t val; + + switch (reg) { + case 0x00: /* Audio Control 1 */ + return s->audio_ctrl1; + + case 0x01: + return 0xff00; + + case 0x02: /* DAC Volume Control */ + return s->volume; + + case 0x03: + return 0x8b00; + + case 0x04: /* Audio Control 2 */ + l_ch = 1; + r_ch = 1; + if (s->softstep && !(s->dac_power & (1 << 10))) { + l_ch = (qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) > + s->volume_change + TSC_SOFTSTEP_DELAY); + r_ch = (qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) > + s->volume_change + TSC_SOFTSTEP_DELAY); + } + + return s->audio_ctrl2 | (l_ch << 3) | (r_ch << 2); + + case 0x05: /* Stereo DAC Power Control */ + return 0x2aa0 | s->dac_power | + (((s->dac_power & (1 << 10)) && + (qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) > + s->powerdown + TSC_POWEROFF_DELAY)) << 6); + + case 0x06: /* Audio Control 3 */ + val = s->audio_ctrl3 | 0x0001; + s->audio_ctrl3 &= 0xff3f; + return val; + + case 0x07: /* LCH_BASS_BOOST_N0 */ + case 0x08: /* LCH_BASS_BOOST_N1 */ + case 0x09: /* LCH_BASS_BOOST_N2 */ + case 0x0a: /* LCH_BASS_BOOST_N3 */ + case 0x0b: /* LCH_BASS_BOOST_N4 */ + case 0x0c: /* LCH_BASS_BOOST_N5 */ + case 0x0d: /* LCH_BASS_BOOST_D1 */ + case 0x0e: /* LCH_BASS_BOOST_D2 */ + case 0x0f: /* LCH_BASS_BOOST_D4 */ + case 0x10: /* LCH_BASS_BOOST_D5 */ + case 0x11: /* RCH_BASS_BOOST_N0 */ + case 0x12: /* RCH_BASS_BOOST_N1 */ + case 0x13: /* RCH_BASS_BOOST_N2 */ + case 0x14: /* RCH_BASS_BOOST_N3 */ + case 0x15: /* RCH_BASS_BOOST_N4 */ + case 0x16: /* RCH_BASS_BOOST_N5 */ + case 0x17: /* RCH_BASS_BOOST_D1 */ + case 0x18: /* RCH_BASS_BOOST_D2 */ + case 0x19: /* RCH_BASS_BOOST_D4 */ + case 0x1a: /* RCH_BASS_BOOST_D5 */ + return s->filter_data[reg - 0x07]; + + case 0x1b: /* PLL Programmability 1 */ + return s->pll[0]; + + case 0x1c: /* PLL Programmability 2 */ + return s->pll[1]; + + case 0x1d: /* Audio Control 4 */ + return (!s->softstep) << 14; + + default: +#ifdef TSC_VERBOSE + fprintf(stderr, "tsc2102_audio_register_read: " + "no such register: 0x%02x\n", reg); +#endif + return 0xffff; + } +} + +static void tsc2102_data_register_write( + TSC210xState *s, int reg, uint16_t value) +{ + switch (reg) { + case 0x00: /* X */ + case 0x01: /* Y */ + case 0x02: /* Z1 */ + case 0x03: /* Z2 */ + case 0x05: /* BAT1 */ + case 0x06: /* BAT2 */ + case 0x07: /* AUX1 */ + case 0x08: /* AUX2 */ + case 0x09: /* TEMP1 */ + case 0x0a: /* TEMP2 */ + return; + + default: +#ifdef TSC_VERBOSE + fprintf(stderr, "tsc2102_data_register_write: " + "no such register: 0x%02x\n", reg); +#endif + } +} + +static void tsc2102_control_register_write( + TSC210xState *s, int reg, uint16_t value) +{ + switch (reg) { + case 0x00: /* TSC ADC */ + s->host_mode = value >> 15; + s->enabled = !(value & 0x4000); + if (s->busy && !s->enabled) + timer_del(s->timer); + s->busy &= s->enabled; + s->nextfunction = (value >> 10) & 0xf; + s->nextprecision = (value >> 8) & 3; + s->filter = value & 0xff; + return; + + case 0x01: /* Status / Keypad Control */ + if ((s->model & 0xff00) == 0x2100) + s->pin_func = value >> 14; + else { + s->kb.scan = (value >> 14) & 1; + s->kb.debounce = (value >> 11) & 7; + if (s->kb.intr && s->kb.scan) { + s->kb.intr = 0; + qemu_irq_raise(s->kbint); + } + } + return; + + case 0x02: /* DAC Control */ + if ((s->model & 0xff00) == 0x2300) { + s->dac_power &= 0x7fff; + s->dac_power |= 0x8000 & value; + } else + goto bad_reg; + break; + + case 0x03: /* Reference */ + s->ref = value & 0x1f; + return; + + case 0x04: /* Reset */ + if (value == 0xbb00) { + if (s->busy) + timer_del(s->timer); + tsc210x_reset(s); +#ifdef TSC_VERBOSE + } else { + fprintf(stderr, "tsc2102_control_register_write: " + "wrong value written into RESET\n"); +#endif + } + return; + + case 0x05: /* Configuration */ + s->timing = value & 0x3f; +#ifdef TSC_VERBOSE + if (value & ~0x3f) + fprintf(stderr, "tsc2102_control_register_write: " + "wrong value written into CONFIG\n"); +#endif + return; + + case 0x06: /* Secondary configuration */ + if ((s->model & 0xff00) == 0x2100) + goto bad_reg; + s->kb.mode = value >> 14; + s->pll[2] = value & 0x3ffff; + return; + + case 0x10: /* Keypad Mask */ + if ((s->model & 0xff00) == 0x2100) + goto bad_reg; + s->kb.mask = value; + return; + + default: + bad_reg: +#ifdef TSC_VERBOSE + fprintf(stderr, "tsc2102_control_register_write: " + "no such register: 0x%02x\n", reg); +#endif + } +} + +static void tsc2102_audio_register_write( + TSC210xState *s, int reg, uint16_t value) +{ + switch (reg) { + case 0x00: /* Audio Control 1 */ + s->audio_ctrl1 = value & 0x0f3f; +#ifdef TSC_VERBOSE + if ((value & ~0x0f3f) || ((value & 7) != ((value >> 3) & 7))) + fprintf(stderr, "tsc2102_audio_register_write: " + "wrong value written into Audio 1\n"); +#endif + tsc2102_audio_rate_update(s); + tsc2102_audio_output_update(s); + return; + + case 0x01: +#ifdef TSC_VERBOSE + if (value != 0xff00) + fprintf(stderr, "tsc2102_audio_register_write: " + "wrong value written into reg 0x01\n"); +#endif + return; + + case 0x02: /* DAC Volume Control */ + s->volume = value; + s->volume_change = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); + return; + + case 0x03: +#ifdef TSC_VERBOSE + if (value != 0x8b00) + fprintf(stderr, "tsc2102_audio_register_write: " + "wrong value written into reg 0x03\n"); +#endif + return; + + case 0x04: /* Audio Control 2 */ + s->audio_ctrl2 = value & 0xf7f2; +#ifdef TSC_VERBOSE + if (value & ~0xf7fd) + fprintf(stderr, "tsc2102_audio_register_write: " + "wrong value written into Audio 2\n"); +#endif + return; + + case 0x05: /* Stereo DAC Power Control */ + if ((value & ~s->dac_power) & (1 << 10)) + s->powerdown = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); + + s->dac_power = value & 0x9543; +#ifdef TSC_VERBOSE + if ((value & ~0x9543) != 0x2aa0) + fprintf(stderr, "tsc2102_audio_register_write: " + "wrong value written into Power\n"); +#endif + tsc2102_audio_rate_update(s); + tsc2102_audio_output_update(s); + return; + + case 0x06: /* Audio Control 3 */ + s->audio_ctrl3 &= 0x00c0; + s->audio_ctrl3 |= value & 0xf800; +#ifdef TSC_VERBOSE + if (value & ~0xf8c7) + fprintf(stderr, "tsc2102_audio_register_write: " + "wrong value written into Audio 3\n"); +#endif + tsc2102_audio_output_update(s); + return; + + case 0x07: /* LCH_BASS_BOOST_N0 */ + case 0x08: /* LCH_BASS_BOOST_N1 */ + case 0x09: /* LCH_BASS_BOOST_N2 */ + case 0x0a: /* LCH_BASS_BOOST_N3 */ + case 0x0b: /* LCH_BASS_BOOST_N4 */ + case 0x0c: /* LCH_BASS_BOOST_N5 */ + case 0x0d: /* LCH_BASS_BOOST_D1 */ + case 0x0e: /* LCH_BASS_BOOST_D2 */ + case 0x0f: /* LCH_BASS_BOOST_D4 */ + case 0x10: /* LCH_BASS_BOOST_D5 */ + case 0x11: /* RCH_BASS_BOOST_N0 */ + case 0x12: /* RCH_BASS_BOOST_N1 */ + case 0x13: /* RCH_BASS_BOOST_N2 */ + case 0x14: /* RCH_BASS_BOOST_N3 */ + case 0x15: /* RCH_BASS_BOOST_N4 */ + case 0x16: /* RCH_BASS_BOOST_N5 */ + case 0x17: /* RCH_BASS_BOOST_D1 */ + case 0x18: /* RCH_BASS_BOOST_D2 */ + case 0x19: /* RCH_BASS_BOOST_D4 */ + case 0x1a: /* RCH_BASS_BOOST_D5 */ + s->filter_data[reg - 0x07] = value; + return; + + case 0x1b: /* PLL Programmability 1 */ + s->pll[0] = value & 0xfffc; +#ifdef TSC_VERBOSE + if (value & ~0xfffc) + fprintf(stderr, "tsc2102_audio_register_write: " + "wrong value written into PLL 1\n"); +#endif + return; + + case 0x1c: /* PLL Programmability 2 */ + s->pll[1] = value & 0xfffc; +#ifdef TSC_VERBOSE + if (value & ~0xfffc) + fprintf(stderr, "tsc2102_audio_register_write: " + "wrong value written into PLL 2\n"); +#endif + return; + + case 0x1d: /* Audio Control 4 */ + s->softstep = !(value & 0x4000); +#ifdef TSC_VERBOSE + if (value & ~0x4000) + fprintf(stderr, "tsc2102_audio_register_write: " + "wrong value written into Audio 4\n"); +#endif + return; + + default: +#ifdef TSC_VERBOSE + fprintf(stderr, "tsc2102_audio_register_write: " + "no such register: 0x%02x\n", reg); +#endif + } +} + +/* This handles most of the chip logic. */ +static void tsc210x_pin_update(TSC210xState *s) +{ + int64_t expires; + int pin_state; + + switch (s->pin_func) { + case 0: + pin_state = s->pressure; + break; + case 1: + pin_state = !!s->dav; + break; + case 2: + default: + pin_state = s->pressure && !s->dav; + } + + if (!s->enabled) + pin_state = 0; + + if (pin_state != s->irq) { + s->irq = pin_state; + qemu_set_irq(s->pint, !s->irq); + } + + switch (s->nextfunction) { + case TSC_MODE_XY_SCAN: + case TSC_MODE_XYZ_SCAN: + if (!s->pressure) + return; + break; + + case TSC_MODE_X: + case TSC_MODE_Y: + case TSC_MODE_Z: + if (!s->pressure) + return; + /* Fall through */ + case TSC_MODE_BAT1: + case TSC_MODE_BAT2: + case TSC_MODE_AUX: + case TSC_MODE_TEMP1: + case TSC_MODE_TEMP2: + if (s->dav) + s->enabled = 0; + break; + + case TSC_MODE_AUX_SCAN: + case TSC_MODE_PORT_SCAN: + break; + + case TSC_MODE_NO_SCAN: + case TSC_MODE_XX_DRV: + case TSC_MODE_YY_DRV: + case TSC_MODE_YX_DRV: + default: + return; + } + + if (!s->enabled || s->busy || s->dav) + return; + + s->busy = 1; + s->precision = s->nextprecision; + s->function = s->nextfunction; + expires = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + (get_ticks_per_sec() >> 10); + timer_mod(s->timer, expires); +} + +static uint16_t tsc210x_read(TSC210xState *s) +{ + uint16_t ret = 0x0000; + + if (!s->command) + fprintf(stderr, "tsc210x_read: SPI underrun!\n"); + + switch (s->page) { + case TSC_DATA_REGISTERS_PAGE: + ret = tsc2102_data_register_read(s, s->offset); + if (!s->dav) + qemu_irq_raise(s->davint); + break; + case TSC_CONTROL_REGISTERS_PAGE: + ret = tsc2102_control_register_read(s, s->offset); + break; + case TSC_AUDIO_REGISTERS_PAGE: + ret = tsc2102_audio_register_read(s, s->offset); + break; + default: + hw_error("tsc210x_read: wrong memory page\n"); + } + + tsc210x_pin_update(s); + + /* Allow sequential reads. */ + s->offset ++; + s->state = 0; + return ret; +} + +static void tsc210x_write(TSC210xState *s, uint16_t value) +{ + /* + * This is a two-state state machine for reading + * command and data every second time. + */ + if (!s->state) { + s->command = value >> 15; + s->page = (value >> 11) & 0x0f; + s->offset = (value >> 5) & 0x3f; + s->state = 1; + } else { + if (s->command) + fprintf(stderr, "tsc210x_write: SPI overrun!\n"); + else + switch (s->page) { + case TSC_DATA_REGISTERS_PAGE: + tsc2102_data_register_write(s, s->offset, value); + break; + case TSC_CONTROL_REGISTERS_PAGE: + tsc2102_control_register_write(s, s->offset, value); + break; + case TSC_AUDIO_REGISTERS_PAGE: + tsc2102_audio_register_write(s, s->offset, value); + break; + default: + hw_error("tsc210x_write: wrong memory page\n"); + } + + tsc210x_pin_update(s); + s->state = 0; + } +} + +uint32_t tsc210x_txrx(void *opaque, uint32_t value, int len) +{ + TSC210xState *s = opaque; + uint32_t ret = 0; + + if (len != 16) + hw_error("%s: FIXME: bad SPI word width %i\n", __FUNCTION__, len); + + /* TODO: sequential reads etc - how do we make sure the host doesn't + * unintentionally read out a conversion result from a register while + * transmitting the command word of the next command? */ + if (!value || (s->state && s->command)) + ret = tsc210x_read(s); + if (value || (s->state && !s->command)) + tsc210x_write(s, value); + + return ret; +} + +static void tsc210x_timer_tick(void *opaque) +{ + TSC210xState *s = opaque; + + /* Timer ticked -- a set of conversions has been finished. */ + + if (!s->busy) + return; + + s->busy = 0; + s->dav |= mode_regs[s->function]; + tsc210x_pin_update(s); + qemu_irq_lower(s->davint); +} + +static void tsc210x_touchscreen_event(void *opaque, + int x, int y, int z, int buttons_state) +{ + TSC210xState *s = opaque; + int p = s->pressure; + + if (buttons_state) { + s->x = x; + s->y = y; + } + s->pressure = !!buttons_state; + + /* + * Note: We would get better responsiveness in the guest by + * signaling TS events immediately, but for now we simulate + * the first conversion delay for sake of correctness. + */ + if (p != s->pressure) + tsc210x_pin_update(s); +} + +static void tsc210x_i2s_swallow(TSC210xState *s) +{ + if (s->dac_voice[0]) + tsc210x_out_flush(s, s->codec.out.len); + else + s->codec.out.len = 0; +} + +static void tsc210x_i2s_set_rate(TSC210xState *s, int in, int out) +{ + s->i2s_tx_rate = out; + s->i2s_rx_rate = in; +} + +static void tsc210x_save(QEMUFile *f, void *opaque) +{ + TSC210xState *s = (TSC210xState *) opaque; + int64_t now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); + int i; + + qemu_put_be16(f, s->x); + qemu_put_be16(f, s->y); + qemu_put_byte(f, s->pressure); + + qemu_put_byte(f, s->state); + qemu_put_byte(f, s->page); + qemu_put_byte(f, s->offset); + qemu_put_byte(f, s->command); + + qemu_put_byte(f, s->irq); + qemu_put_be16s(f, &s->dav); + + timer_put(f, s->timer); + qemu_put_byte(f, s->enabled); + qemu_put_byte(f, s->host_mode); + qemu_put_byte(f, s->function); + qemu_put_byte(f, s->nextfunction); + qemu_put_byte(f, s->precision); + qemu_put_byte(f, s->nextprecision); + qemu_put_byte(f, s->filter); + qemu_put_byte(f, s->pin_func); + qemu_put_byte(f, s->ref); + qemu_put_byte(f, s->timing); + qemu_put_be32(f, s->noise); + + qemu_put_be16s(f, &s->audio_ctrl1); + qemu_put_be16s(f, &s->audio_ctrl2); + qemu_put_be16s(f, &s->audio_ctrl3); + qemu_put_be16s(f, &s->pll[0]); + qemu_put_be16s(f, &s->pll[1]); + qemu_put_be16s(f, &s->volume); + qemu_put_sbe64(f, (s->volume_change - now)); + qemu_put_sbe64(f, (s->powerdown - now)); + qemu_put_byte(f, s->softstep); + qemu_put_be16s(f, &s->dac_power); + + for (i = 0; i < 0x14; i ++) + qemu_put_be16s(f, &s->filter_data[i]); +} + +static int tsc210x_load(QEMUFile *f, void *opaque, int version_id) +{ + TSC210xState *s = (TSC210xState *) opaque; + int64_t now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); + int i; + + s->x = qemu_get_be16(f); + s->y = qemu_get_be16(f); + s->pressure = qemu_get_byte(f); + + s->state = qemu_get_byte(f); + s->page = qemu_get_byte(f); + s->offset = qemu_get_byte(f); + s->command = qemu_get_byte(f); + + s->irq = qemu_get_byte(f); + qemu_get_be16s(f, &s->dav); + + timer_get(f, s->timer); + s->enabled = qemu_get_byte(f); + s->host_mode = qemu_get_byte(f); + s->function = qemu_get_byte(f); + if (s->function < 0 || s->function >= ARRAY_SIZE(mode_regs)) { + return -EINVAL; + } + s->nextfunction = qemu_get_byte(f); + if (s->nextfunction < 0 || s->nextfunction >= ARRAY_SIZE(mode_regs)) { + return -EINVAL; + } + s->precision = qemu_get_byte(f); + if (s->precision < 0 || s->precision >= ARRAY_SIZE(resolution)) { + return -EINVAL; + } + s->nextprecision = qemu_get_byte(f); + if (s->nextprecision < 0 || s->nextprecision >= ARRAY_SIZE(resolution)) { + return -EINVAL; + } + s->filter = qemu_get_byte(f); + s->pin_func = qemu_get_byte(f); + s->ref = qemu_get_byte(f); + s->timing = qemu_get_byte(f); + s->noise = qemu_get_be32(f); + + qemu_get_be16s(f, &s->audio_ctrl1); + qemu_get_be16s(f, &s->audio_ctrl2); + qemu_get_be16s(f, &s->audio_ctrl3); + qemu_get_be16s(f, &s->pll[0]); + qemu_get_be16s(f, &s->pll[1]); + qemu_get_be16s(f, &s->volume); + s->volume_change = qemu_get_sbe64(f) + now; + s->powerdown = qemu_get_sbe64(f) + now; + s->softstep = qemu_get_byte(f); + qemu_get_be16s(f, &s->dac_power); + + for (i = 0; i < 0x14; i ++) + qemu_get_be16s(f, &s->filter_data[i]); + + s->busy = timer_pending(s->timer); + qemu_set_irq(s->pint, !s->irq); + qemu_set_irq(s->davint, !s->dav); + + return 0; +} + +uWireSlave *tsc2102_init(qemu_irq pint) +{ + TSC210xState *s; + + s = (TSC210xState *) + g_malloc0(sizeof(TSC210xState)); + memset(s, 0, sizeof(TSC210xState)); + s->x = 160; + s->y = 160; + s->pressure = 0; + s->precision = s->nextprecision = 0; + s->timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, tsc210x_timer_tick, s); + s->pint = pint; + s->model = 0x2102; + s->name = "tsc2102"; + + s->tr[0] = 0; + s->tr[1] = 1; + s->tr[2] = 1; + s->tr[3] = 0; + s->tr[4] = 1; + s->tr[5] = 0; + s->tr[6] = 1; + s->tr[7] = 0; + + s->chip.opaque = s; + s->chip.send = (void *) tsc210x_write; + s->chip.receive = (void *) tsc210x_read; + + s->codec.opaque = s; + s->codec.tx_swallow = (void *) tsc210x_i2s_swallow; + s->codec.set_rate = (void *) tsc210x_i2s_set_rate; + s->codec.in.fifo = s->in_fifo; + s->codec.out.fifo = s->out_fifo; + + tsc210x_reset(s); + + qemu_add_mouse_event_handler(tsc210x_touchscreen_event, s, 1, + "QEMU TSC2102-driven Touchscreen"); + + AUD_register_card(s->name, &s->card); + + qemu_register_reset((void *) tsc210x_reset, s); + register_savevm(NULL, s->name, -1, 0, + tsc210x_save, tsc210x_load, s); + + return &s->chip; +} + +uWireSlave *tsc2301_init(qemu_irq penirq, qemu_irq kbirq, qemu_irq dav) +{ + TSC210xState *s; + + s = (TSC210xState *) + g_malloc0(sizeof(TSC210xState)); + memset(s, 0, sizeof(TSC210xState)); + s->x = 400; + s->y = 240; + s->pressure = 0; + s->precision = s->nextprecision = 0; + s->timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, tsc210x_timer_tick, s); + s->pint = penirq; + s->kbint = kbirq; + s->davint = dav; + s->model = 0x2301; + s->name = "tsc2301"; + + s->tr[0] = 0; + s->tr[1] = 1; + s->tr[2] = 1; + s->tr[3] = 0; + s->tr[4] = 1; + s->tr[5] = 0; + s->tr[6] = 1; + s->tr[7] = 0; + + s->chip.opaque = s; + s->chip.send = (void *) tsc210x_write; + s->chip.receive = (void *) tsc210x_read; + + s->codec.opaque = s; + s->codec.tx_swallow = (void *) tsc210x_i2s_swallow; + s->codec.set_rate = (void *) tsc210x_i2s_set_rate; + s->codec.in.fifo = s->in_fifo; + s->codec.out.fifo = s->out_fifo; + + tsc210x_reset(s); + + qemu_add_mouse_event_handler(tsc210x_touchscreen_event, s, 1, + "QEMU TSC2301-driven Touchscreen"); + + AUD_register_card(s->name, &s->card); + + qemu_register_reset((void *) tsc210x_reset, s); + register_savevm(NULL, s->name, -1, 0, tsc210x_save, tsc210x_load, s); + + return &s->chip; +} + +I2SCodec *tsc210x_codec(uWireSlave *chip) +{ + TSC210xState *s = (TSC210xState *) chip->opaque; + + return &s->codec; +} + +/* + * Use tslib generated calibration data to generate ADC input values + * from the touchscreen. Assuming 12-bit precision was used during + * tslib calibration. + */ +void tsc210x_set_transform(uWireSlave *chip, + MouseTransformInfo *info) +{ + TSC210xState *s = (TSC210xState *) chip->opaque; +#if 0 + int64_t ltr[8]; + + ltr[0] = (int64_t) info->a[1] * info->y; + ltr[1] = (int64_t) info->a[4] * info->x; + ltr[2] = (int64_t) info->a[1] * info->a[3] - + (int64_t) info->a[4] * info->a[0]; + ltr[3] = (int64_t) info->a[2] * info->a[4] - + (int64_t) info->a[5] * info->a[1]; + ltr[4] = (int64_t) info->a[0] * info->y; + ltr[5] = (int64_t) info->a[3] * info->x; + ltr[6] = (int64_t) info->a[4] * info->a[0] - + (int64_t) info->a[1] * info->a[3]; + ltr[7] = (int64_t) info->a[2] * info->a[3] - + (int64_t) info->a[5] * info->a[0]; + + /* Avoid integer overflow */ + s->tr[0] = ltr[0] >> 11; + s->tr[1] = ltr[1] >> 11; + s->tr[2] = muldiv64(ltr[2], 1, info->a[6]); + s->tr[3] = muldiv64(ltr[3], 1 << 4, ltr[2]); + s->tr[4] = ltr[4] >> 11; + s->tr[5] = ltr[5] >> 11; + s->tr[6] = muldiv64(ltr[6], 1, info->a[6]); + s->tr[7] = muldiv64(ltr[7], 1 << 4, ltr[6]); +#else + + /* This version assumes touchscreen X & Y axis are parallel or + * perpendicular to LCD's X & Y axis in some way. */ + if (abs(info->a[0]) > abs(info->a[1])) { + s->tr[0] = 0; + s->tr[1] = -info->a[6] * info->x; + s->tr[2] = info->a[0]; + s->tr[3] = -info->a[2] / info->a[0]; + s->tr[4] = info->a[6] * info->y; + s->tr[5] = 0; + s->tr[6] = info->a[4]; + s->tr[7] = -info->a[5] / info->a[4]; + } else { + s->tr[0] = info->a[6] * info->y; + s->tr[1] = 0; + s->tr[2] = info->a[1]; + s->tr[3] = -info->a[2] / info->a[1]; + s->tr[4] = 0; + s->tr[5] = -info->a[6] * info->x; + s->tr[6] = info->a[3]; + s->tr[7] = -info->a[5] / info->a[3]; + } + + s->tr[0] >>= 11; + s->tr[1] >>= 11; + s->tr[3] <<= 4; + s->tr[4] >>= 11; + s->tr[5] >>= 11; + s->tr[7] <<= 4; +#endif +} + +void tsc210x_key_event(uWireSlave *chip, int key, int down) +{ + TSC210xState *s = (TSC210xState *) chip->opaque; + + if (down) + s->kb.down |= 1 << key; + else + s->kb.down &= ~(1 << key); + + if (down && (s->kb.down & ~s->kb.mask) && !s->kb.intr) { + s->kb.intr = 1; + qemu_irq_lower(s->kbint); + } else if (s->kb.intr && !(s->kb.down & ~s->kb.mask) && + !(s->kb.mode & 1)) { + s->kb.intr = 0; + qemu_irq_raise(s->kbint); + } +}