--- /dev/null
+/*
+ * TI TSC2102 (touchscreen/sensors/audio controller) emulator.
+ * TI TSC2301 (touchscreen/sensors/keypad).
+ *
+ * Copyright (c) 2006 Andrzej Zaborowski <balrog@zabor.org>
+ * 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 <http://www.gnu.org/licenses/>.
+ */
+
+#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);
+ }
+}
Code Review / kvmfornfv.git / blobdiff