Add TSC2301 touchscreen & keypad controller.
Add also a facility for setting up touchscreen calibration data per-board
based on calibration data generated by tslib.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4214 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/hw/devices.h b/hw/devices.h
index 07c673b..2c3f83d 100644
--- a/hw/devices.h
+++ b/hw/devices.h
@@ -16,6 +16,18 @@
void ads7846_write(void *opaque, uint32_t value);
struct ads7846_state_s *ads7846_init(qemu_irq penirq);
+/* tsc210x.c */
+struct uwire_slave_s;
+struct mouse_transform_info_s;
+struct uwire_slave_s *tsc2102_init(qemu_irq pint, AudioState *audio);
+struct uwire_slave_s *tsc2301_init(qemu_irq penirq, qemu_irq kbirq,
+ qemu_irq dav, AudioState *audio);
+struct i2s_codec_s *tsc210x_codec(struct uwire_slave_s *chip);
+uint32_t tsc210x_txrx(void *opaque, uint32_t value);
+void tsc210x_set_transform(struct uwire_slave_s *chip,
+ struct mouse_transform_info_s *info);
+void tsc210x_key_event(struct uwire_slave_s *chip, int key, int down);
+
/* stellaris_input.c */
void stellaris_gamepad_init(int n, qemu_irq *irq, const int *keycode);
diff --git a/hw/omap.h b/hw/omap.h
index 087b813..91c1588 100644
--- a/hw/omap.h
+++ b/hw/omap.h
@@ -1125,10 +1125,4 @@
# define cpu_register_io_memory debug_register_io_memory
# endif
-/* Not really omap specific, but is the only thing that uses the
- uwire interface. */
-/* tsc210x.c */
-struct uwire_slave_s *tsc2102_init(qemu_irq pint, AudioState *audio);
-struct i2s_codec_s *tsc210x_codec(struct uwire_slave_s *chip);
-
#endif /* hw_omap_h */
diff --git a/hw/tsc210x.c b/hw/tsc210x.c
index 96956a4..da2efed 100644
--- a/hw/tsc210x.c
+++ b/hw/tsc210x.c
@@ -1,12 +1,14 @@
/*
* 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 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
@@ -35,12 +37,15 @@
struct tsc210x_state_s {
qemu_irq pint;
+ qemu_irq kbint;
+ qemu_irq davint;
QEMUTimer *timer;
QEMUSoundCard card;
struct uwire_slave_s chip;
struct i2s_codec_s codec;
uint8_t in_fifo[16384];
uint8_t out_fifo[16384];
+ uint16_t model;
int x, y;
int pressure;
@@ -64,7 +69,7 @@
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;
@@ -78,6 +83,17 @@
int i2s_rx_rate;
int i2s_tx_rate;
AudioState *audio;
+
+ int tr[8];
+
+ struct {
+ uint16_t down;
+ uint16_t mask;
+ int scan;
+ int debounce;
+ int mode;
+ int intr;
+ } kb;
};
static const int resolution[4] = { 12, 8, 10, 12 };
@@ -118,17 +134,10 @@
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 >> 7) + ((s)->pressure << 10)) << 4)
#define Z2_TRANSFORM(s) \
@@ -161,6 +170,7 @@
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;
@@ -190,7 +200,15 @@
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);
}
struct tsc210x_rate_info_s {
@@ -344,13 +362,13 @@
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 */
@@ -364,6 +382,14 @@
(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 */
@@ -414,9 +440,19 @@
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;
@@ -427,7 +463,18 @@
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);
@@ -556,10 +603,27 @@
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;
@@ -586,7 +650,21 @@
#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);
@@ -785,7 +863,7 @@
return;
}
- if (!s->enabled || s->busy)
+ if (!s->enabled || s->busy || s->dav)
return;
s->busy = 1;
@@ -805,6 +883,8 @@
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);
@@ -859,6 +939,22 @@
}
}
+uint32_t tsc210x_txrx(void *opaque, uint32_t value)
+{
+ struct tsc210x_state_s *s = opaque;
+ uint32_t ret = 0;
+
+ /* 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;
@@ -871,6 +967,7 @@
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,
@@ -1001,6 +1098,7 @@
s->busy = qemu_timer_pending(s->timer);
qemu_set_irq(s->pint, !s->irq);
+ qemu_set_irq(s->davint, !s->dav);
return 0;
}
@@ -1020,9 +1118,19 @@
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->audio = audio;
+ s->tr[0] = 0;
+ s->tr[1] = 1;
+ s->tr[2] = 0;
+ s->tr[3] = 1;
+ s->tr[4] = 1;
+ s->tr[5] = 0;
+ s->tr[6] = 0;
+ s->tr[7] = 1;
+
s->chip.opaque = s;
s->chip.send = (void *) tsc210x_write;
s->chip.receive = (void *) tsc210x_read;
@@ -1048,9 +1156,149 @@
return &s->chip;
}
+struct uwire_slave_s *tsc2301_init(qemu_irq penirq, qemu_irq kbirq,
+ qemu_irq dav, AudioState *audio)
+{
+ struct tsc210x_state_s *s;
+
+ s = (struct tsc210x_state_s *)
+ qemu_mallocz(sizeof(struct tsc210x_state_s));
+ memset(s, 0, sizeof(struct tsc210x_state_s));
+ 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->audio = audio;
+
+ s->tr[0] = 0;
+ s->tr[1] = 1;
+ s->tr[2] = 0;
+ s->tr[3] = 1;
+ s->tr[4] = 1;
+ s->tr[5] = 0;
+ s->tr[6] = 0;
+ s->tr[7] = 1;
+
+ 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");
+
+ if (s->audio)
+ AUD_register_card(s->audio, s->name, &s->card);
+
+ qemu_register_reset((void *) tsc210x_reset, s);
+ register_savevm(s->name, tsc2102_iid ++, 0,
+ tsc210x_save, tsc210x_load, s);
+
+ return &s->chip;
+}
+
struct i2s_codec_s *tsc210x_codec(struct uwire_slave_s *chip)
{
struct tsc210x_state_s *s = (struct tsc210x_state_s *) 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(struct uwire_slave_s *chip,
+ struct mouse_transform_info_s *info)
+{
+ struct tsc210x_state_s *s = (struct tsc210x_state_s *) 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(struct uwire_slave_s *chip, int key, int down)
+{
+ struct tsc210x_state_s *s = (struct tsc210x_state_s *) 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);
+ }
+}
