hw: move timer devices to hw/timer/, configure with default-configs/

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 1293 insertions, 0 deletions

diff --git a/hw/input/tsc210x.c b/hw/input/tsc210x.c
new file mode 100644
index 0000000..e6c217c
--- /dev/null
+++ b/hw/input/tsc210x.c
@@ -0,0 +1,1293 @@
+/*
+ * 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/arm/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 tsc2101_rates[] = {
+    /* Fsref / 6.0 */
+    { 7350,	7,	1 },
+    { 8000,	7,	0 },
+    /* Fsref / 5.5 */
+    { 8018,	6,	1 },
+    { 8727,	6,	0 },
+    /* Fsref / 5.0 */
+    { 8820,	5,	1 },
+    { 9600,	5,	0 },
+    /* Fsref / 4.0 */
+    { 11025,	4,	1 },
+    { 12000,	4,	0 },
+    /* Fsref / 3.0 */
+    { 14700,	3,	1 },
+    { 16000,	3,	0 },
+    /* Fsref / 2.0 */
+    { 22050,	2,	1 },
+    { 24000,	2,	0 },
+    /* Fsref / 1.5 */
+    { 29400,	1,	1 },
+    { 32000,	1,	0 },
+    /* Fsref */
+    { 44100,	0,	1 },
+    { 48000,	0,	0 },
+
+    { 0,	0, 	0 },
+};
+
+/*  { 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_get_clock_ns(vm_clock) >
+                            s->volume_change + TSC_SOFTSTEP_DELAY);
+            r_ch = (qemu_get_clock_ns(vm_clock) >
+                            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_get_clock_ns(vm_clock) >
+                   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)
+            qemu_del_timer(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)
+                qemu_del_timer(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_get_clock_ns(vm_clock);
+        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_get_clock_ns(vm_clock);
+
+        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_get_clock_ns(vm_clock) + (get_ticks_per_sec() >> 10);
+    qemu_mod_timer(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_get_clock_ns(vm_clock);
+    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);
+
+    qemu_put_timer(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_get_clock_ns(vm_clock);
+    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);
+
+    qemu_get_timer(f, s->timer);
+    s->enabled = qemu_get_byte(f);
+    s->host_mode = qemu_get_byte(f);
+    s->function = qemu_get_byte(f);
+    s->nextfunction = qemu_get_byte(f);
+    s->precision = qemu_get_byte(f);
+    s->nextprecision = qemu_get_byte(f);
+    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 = qemu_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 = qemu_new_timer_ns(vm_clock, 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 = qemu_new_timer_ns(vm_clock, 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);
+    }
+}