/*
* TI TSC2102 (touchscreen/sensors/audio controller) emulator.
+ * TI TSC2301 (touchscreen/sensors/keypad).
*
+ * 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 of
- * the License, or (at your option) any later version.
+ * 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, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * 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 "vl.h"
+#include "hw.h"
+#include "audio/audio.h"
+#include "qemu-timer.h"
+#include "console.h"
+#include "omap.h" /* For I2SCodec and uWireSlave */
+#include "devices.h"
#define TSC_DATA_REGISTERS_PAGE 0x0
#define TSC_CONTROL_REGISTERS_PAGE 0x1
#define TSC_CUT_RESOLUTION(value, p) ((value) >> (16 - resolution[p]))
-struct tsc210x_state_s {
+typedef struct {
qemu_irq pint;
+ qemu_irq kbint;
+ qemu_irq davint;
QEMUTimer *timer;
- struct uwire_slave_s chip;
+ QEMUSoundCard card;
+ uWireSlave chip;
+ I2SCodec codec;
+ uint8_t in_fifo[16384];
+ uint8_t out_fifo[16384];
+ uint16_t model;
int x, y;
int pressure;
uint16_t audio_ctrl1;
uint16_t audio_ctrl2;
uint16_t audio_ctrl3;
- uint16_t pll[2];
+ 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 };
0x0000, /* Y+, X- drivers */
};
-/*
- * Convert screen coordinates to arbitrary values that the
- * touchscreen in my Palm Tungsten E device returns.
- * This shouldn't really matter (because the guest system
- * should calibrate the touchscreen anyway), but let's
- * imitate some real hardware.
- */
-#define X_TRANSFORM(value) \
- ((3850 - ((int) (value) * (3850 - 250) / 32768)) << 4)
-#define Y_TRANSFORM(value) \
- ((150 + ((int) (value) * (3037 - 150) / 32768)) << 4)
+#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 + ((s)->pressure << 9)) << 4)
+ ((400 - ((s)->x >> 7) + ((s)->pressure << 10)) << 4)
#define Z2_TRANSFORM(s) \
- ((4000 + (s)->y - ((s)->pressure << 10)) << 4)
+ ((4000 + ((s)->y >> 7) - ((s)->pressure << 10)) << 4)
+
#define BAT1_VAL 0x8660
#define BAT2_VAL 0x0000
#define AUX1_VAL 0x35c0
#define TSC_POWEROFF_DELAY 50
#define TSC_SOFTSTEP_DELAY 50
-static void tsc210x_reset(struct tsc210x_state_s *s)
+static void tsc210x_reset(TSC210xState *s)
{
s->state = 0;
s->pin_func = 2;
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->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(struct tsc210x_state_s *s, int reg)
+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->x), s->precision) +
+ 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->y), s->precision) ^
+ return TSC_CUT_RESOLUTION(Y_TRANSFORM(s), s->precision) ^
(s->noise & 3);
case 0x02: /* Z1 */
(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);
+ return TSC_CUT_RESOLUTION(BAT1_VAL, s->precision) +
+ (s->noise & 6);
case 0x06: /* BAT2 */
s->dav &= 0xffdf;
case 0x09: /* TEMP1 */
s->dav &= 0xfffb;
- return TSC_CUT_RESOLUTION(TEMP1_VAL, s->precision);
+ 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);
+ return TSC_CUT_RESOLUTION(TEMP2_VAL, s->precision) ^
+ (s->noise & 3);
case 0x0b: /* DAC */
s->dav &= 0xfffe;
}
static uint16_t tsc2102_control_register_read(
- struct tsc210x_state_s *s, int reg)
+ 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 */
- return (s->pin_func << 14) | ((!s->enabled) << 13) |
- (s->host_mode << 12) | ((!!s->dav) << 11) | s->dav;
+ 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 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);
}
}
-static uint16_t tsc2102_audio_register_read(struct tsc210x_state_s *s, int reg)
+static uint16_t tsc2102_audio_register_read(TSC210xState *s, int reg)
{
int l_ch, r_ch;
uint16_t val;
}
static void tsc2102_data_register_write(
- struct tsc210x_state_s *s, int reg, uint16_t value)
+ TSC210xState *s, int reg, uint16_t value)
{
switch (reg) {
case 0x00: /* X */
}
static void tsc2102_control_register_write(
- struct tsc210x_state_s *s, int reg, uint16_t value)
+ TSC210xState *s, int reg, uint16_t value)
{
switch (reg) {
case 0x00: /* TSC ADC */
s->filter = value & 0xff;
return;
- case 0x01: /* Status */
- s->pin_func = value >> 14;
+ 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;
#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);
}
static void tsc2102_audio_register_write(
- struct tsc210x_state_s *s, int reg, uint16_t value)
+ TSC210xState *s, int reg, uint16_t value)
{
switch (reg) {
case 0x00: /* Audio Control 1 */
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:
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 */
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 */
}
/* This handles most of the chip logic. */
-static void tsc210x_pin_update(struct tsc210x_state_s *s)
+static void tsc210x_pin_update(TSC210xState *s)
{
int64_t expires;
int pin_state;
return;
}
- if (!s->enabled || s->busy)
+ if (!s->enabled || s->busy || s->dav)
return;
s->busy = 1;
s->precision = s->nextprecision;
s->function = s->nextfunction;
- expires = qemu_get_clock(vm_clock) + (ticks_per_sec >> 10);
+ expires = qemu_get_clock(vm_clock) + (get_ticks_per_sec() >> 10);
qemu_mod_timer(s->timer, expires);
}
-static uint16_t tsc210x_read(struct tsc210x_state_s *s)
+static uint16_t tsc210x_read(TSC210xState *s)
{
uint16_t ret = 0x0000;
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);
ret = tsc2102_audio_register_read(s, s->offset);
break;
default:
- cpu_abort(cpu_single_env, "tsc210x_read: wrong memory page\n");
+ hw_error("tsc210x_read: wrong memory page\n");
}
tsc210x_pin_update(s);
return ret;
}
-static void tsc210x_write(struct tsc210x_state_s *s, uint16_t value)
+static void tsc210x_write(TSC210xState *s, uint16_t value)
{
/*
* This is a two-state state machine for reading
tsc2102_audio_register_write(s, s->offset, value);
break;
default:
- cpu_abort(cpu_single_env,
- "tsc210x_write: wrong memory page\n");
+ hw_error("tsc210x_write: wrong memory page\n");
}
tsc210x_pin_update(s);
}
}
+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)
{
- struct tsc210x_state_s *s = opaque;
+ TSC210xState *s = opaque;
/* Timer ticked -- a set of conversions has been finished. */
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)
{
- struct tsc210x_state_s *s = opaque;
+ TSC210xState *s = opaque;
int p = s->pressure;
if (buttons_state) {
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)
{
- struct tsc210x_state_s *s = (struct tsc210x_state_s *) opaque;
+ TSC210xState *s = (TSC210xState *) opaque;
int64_t now = qemu_get_clock(vm_clock);
int i;
qemu_put_be16s(f, &s->pll[0]);
qemu_put_be16s(f, &s->pll[1]);
qemu_put_be16s(f, &s->volume);
- qemu_put_be64(f, (uint64_t) (s->volume_change - now));
- qemu_put_be64(f, (uint64_t) (s->powerdown - now));
+ 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);
static int tsc210x_load(QEMUFile *f, void *opaque, int version_id)
{
- struct tsc210x_state_s *s = (struct tsc210x_state_s *) opaque;
+ TSC210xState *s = (TSC210xState *) opaque;
int64_t now = qemu_get_clock(vm_clock);
int i;
qemu_get_be16s(f, &s->pll[0]);
qemu_get_be16s(f, &s->pll[1]);
qemu_get_be16s(f, &s->volume);
- s->volume_change = (int64_t) qemu_get_be64(f) + now;
- s->powerdown = (int64_t) qemu_get_be64(f) + now;
+ 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);
s->busy = qemu_timer_pending(s->timer);
qemu_set_irq(s->pint, !s->irq);
+ qemu_set_irq(s->davint, !s->dav);
return 0;
}
-static int tsc2102_iid = 0;
-
-struct uwire_slave_s *tsc2102_init(qemu_irq pint)
+uWireSlave *tsc2102_init(qemu_irq pint)
{
- struct tsc210x_state_s *s;
+ TSC210xState *s;
- s = (struct tsc210x_state_s *)
- qemu_mallocz(sizeof(struct tsc210x_state_s));
- memset(s, 0, sizeof(struct tsc210x_state_s));
+ s = (TSC210xState *)
+ qemu_mallocz(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(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("tsc2102", tsc2102_iid ++, 0,
+ register_savevm(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 *)
+ qemu_mallocz(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(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(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);
+ }
+}
projects / qemu.git / blobdiff