From: Kuo-Jung Su <dant...@faraday-tech.com>
The FTTSC010 provides two operation modes to sample
the analog input voltage.
1. The manual operation mode needs to program
and control the panel drivers by software
step-by-step for the x-y position measurement.
2. The auto-scan mode provides a periodic sampling
method to convert the analog input.
This patch only implements the auto-scan mode.
Signed-off-by: Kuo-Jung Su <dant...@faraday-tech.com>
---
hw/arm/Makefile.objs | 1 +
hw/arm/faraday_a369.c | 3 +
hw/arm/fttsc010.c | 260 +++++++++++++++++++++++++++++++++++++++++++++++++
hw/arm/fttsc010.h | 23 +++++
4 files changed, 287 insertions(+)
create mode 100644 hw/arm/fttsc010.c
create mode 100644 hw/arm/fttsc010.h
diff --git a/hw/arm/Makefile.objs b/hw/arm/Makefile.objs
index 5175a9d..854c30a 100644
--- a/hw/arm/Makefile.objs
+++ b/hw/arm/Makefile.objs
@@ -50,3 +50,4 @@ obj-y += ftssp010.o
obj-y += ftmac110.o
obj-y += ftgmac100.o
obj-y += ftlcdc200.o
+obj-y += fttsc010.o
diff --git a/hw/arm/faraday_a369.c b/hw/arm/faraday_a369.c
index 9100616..fd81e2b 100644
--- a/hw/arm/faraday_a369.c
+++ b/hw/arm/faraday_a369.c
@@ -193,6 +193,9 @@ a369_device_init(A369State *s)
pic[23], /* FIFO Under-Run */
pic[22], /* AHB Bus Error */
NULL);
+
+ /* fttsc010 */
+ sysbus_create_simple("fttsc010", 0x92400000, pic[19]);
}
static void
diff --git a/hw/arm/fttsc010.c b/hw/arm/fttsc010.c
new file mode 100644
index 0000000..7e5bcb0
--- /dev/null
+++ b/hw/arm/fttsc010.c
@@ -0,0 +1,260 @@
+/*
+ * Faraday FTTSC010 emulator.
+ *
+ * Copyright (c) 2012 Faraday Technology
+ * Written by Dante Su <dant...@faraday-tech.com>
+ *
+ * This code is licensed under GNU GPL v2+.
+ */
+
+#include <hw/hw.h>
+#include <hw/sysbus.h>
+#include <hw/devices.h>
+#include <ui/console.h>
+#include <qemu/timer.h>
+#include <sysemu/sysemu.h>
+
+#include "fttsc010.h"
+
+#define X_AXIS_DMAX 3470
+#define X_AXIS_MIN 290
+#define Y_AXIS_DMAX 3450
+#define Y_AXIS_MIN 200
+
+#define ADS_XPOS(x, y) \
+ (X_AXIS_MIN + ((X_AXIS_DMAX * (x)) >> 15))
+#define ADS_YPOS(x, y) \
+ (Y_AXIS_MIN + ((Y_AXIS_DMAX * (y)) >> 15))
+#define ADS_Z1POS(x, y) \
+ (8)
+#define ADS_Z2POS(x, y) \
+ ((1600 + ADS_XPOS(x, y)) * ADS_Z1POS(x, y) / ADS_XPOS(x, y))
+
+#define TYPE_FTTSC010 "fttsc010"
+
+typedef struct Fttsc010State {
+ SysBusDevice busdev;
+ MemoryRegion iomem;
+ qemu_irq irq;
+
+ uint64_t interval;
+ QEMUTimer *qtimer;
+
+ int x, y;
+ int z1, z2;
+
+ /* HW registers */
+ uint32_t cr;
+ uint32_t isr;
+ uint32_t imr;
+ uint32_t csr;
+ uint32_t pfr;
+ uint32_t dcr;
+} Fttsc010State;
+
+#define FTTSC010(obj) \
+ OBJECT_CHECK(Fttsc010State, obj, TYPE_FTTSC010)
+
+static void fttsc010_update_irq(Fttsc010State *s)
+{
+ if (s->imr & s->isr) {
+ qemu_irq_raise(s->irq);
+ } else {
+ qemu_irq_lower(s->irq);
+ }
+}
+
+static uint64_t fttsc010_mem_read(void *opaque, hwaddr addr, unsigned size)
+{
+ Fttsc010State *s = FTTSC010(opaque);
+
+ switch (addr) {
+ case REG_CR:
+ return s->cr;
+ case REG_ISR:
+ return s->isr;
+ case REG_IMR:
+ return s->imr;
+ case REG_VER:
+ return 0x00010000;
+ case REG_CSR:
+ return s->csr;
+ case REG_PFR:
+ return s->pfr;
+ case REG_DCR:
+ return s->dcr;
+ case REG_XYR:
+ return (s->x & 0x0fff) | ((s->y & 0x0fff) << 16);
+ case REG_ZR:
+ return (s->z1 & 0x0fff) | ((s->z2 & 0x0fff) << 16);
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static void fttsc010_mem_write(void *opaque,
+ hwaddr addr,
+ uint64_t val,
+ unsigned size)
+{
+ Fttsc010State *s = FTTSC010(opaque);
+
+ switch (addr) {
+ case REG_CR:
+ s->cr = (uint32_t)val;
+ if (s->cr & (3 << 30)) {
+ qemu_mod_timer(s->qtimer,
+ s->interval + qemu_get_clock_ns(vm_clock));
+ } else {
+ qemu_del_timer(s->qtimer);
+ }
+ break;
+ case REG_ISR:
+ s->isr &= ~((uint32_t)val);
+ fttsc010_update_irq(s);
+ break;
+ case REG_IMR:
+ s->imr = (uint32_t)val;
+ fttsc010_update_irq(s);
+ break;
+ case REG_CSR:
+ s->csr = (uint32_t)val;
+ break;
+ case REG_PFR:
+ s->pfr = (uint32_t)val;
+ break;
+ case REG_DCR:
+ s->dcr = (uint32_t)val;
+ break;
+ default:
+ break;
+ }
+}
+
+static const MemoryRegionOps fttsc010_ops = {
+ .read = fttsc010_mem_read,
+ .write = fttsc010_mem_write,
+ .endianness = DEVICE_LITTLE_ENDIAN,
+};
+
+static void fttsc010_timer_tick(void *opaque)
+{
+ Fttsc010State *s = FTTSC010(opaque);
+
+ /* if auto-scan enabled */
+ if (s->cr & (3 << 30)) {
+ s->isr |= (1 << 10);
+ /* turn it off, when it's under one-shot mode */
+ if (s->cr & (1 << 30)) {
+ s->cr &= ~(1 << 30);
+ }
+ }
+
+ fttsc010_update_irq(s);
+
+ qemu_mod_timer(s->qtimer, s->interval + qemu_get_clock_ns(vm_clock));
+}
+
+static void fttsc010_touchscreen_event(void *opaque,
+ int x,
+ int y,
+ int z,
+ int buttons_state)
+{
+ Fttsc010State *s = FTTSC010(opaque);
+
+ if (buttons_state) {
+ x = 0x7fff - x;
+ s->x = ADS_XPOS(x, y);
+ s->y = ADS_YPOS(x, y);
+ s->z1 = ADS_Z1POS(x, y);
+ s->z2 = ADS_Z2POS(x, y);
+ } else {
+ s->z1 = 0;
+ s->z2 = 0;
+ }
+}
+
+static void fttsc010_reset(DeviceState *ds)
+{
+ SysBusDevice *busdev = SYS_BUS_DEVICE(ds);
+ Fttsc010State *s = FTTSC010(FROM_SYSBUS(Fttsc010State, busdev));
+
+ s->cr = 0;
+ s->isr = 0;
+ s->imr = 0;
+ s->csr = 0;
+ s->pfr = 0;
+ s->dcr = 0;
+
+ s->x = 0;
+ s->y = 0;
+ s->z1 = 0;
+ s->z2 = 0;
+
+ qemu_irq_lower(s->irq);
+}
+
+static int fttsc010_init(SysBusDevice *dev)
+{
+ Fttsc010State *s = FTTSC010(FROM_SYSBUS(Fttsc010State, dev));
+
+ s->interval = (uint64_t)get_ticks_per_sec() >> 6;
+ s->qtimer = qemu_new_timer_ns(vm_clock, fttsc010_timer_tick, s);
+
+ memory_region_init_io(&s->iomem,
+ &fttsc010_ops,
+ s,
+ TYPE_FTTSC010,
+ 0x1000);
+ sysbus_init_mmio(dev, &s->iomem);
+ sysbus_init_irq(dev, &s->irq);
+
+ qemu_add_mouse_event_handler(fttsc010_touchscreen_event, s, 1,
+ "QEMU FTTSC010-driven Touchscreen");
+
+ return 0;
+}
+
+static const VMStateDescription vmstate_fttsc010 = {
+ .name = TYPE_FTTSC010,
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .minimum_version_id_old = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT32(cr, Fttsc010State),
+ VMSTATE_UINT32(isr, Fttsc010State),
+ VMSTATE_UINT32(imr, Fttsc010State),
+ VMSTATE_UINT32(csr, Fttsc010State),
+ VMSTATE_UINT32(pfr, Fttsc010State),
+ VMSTATE_UINT32(dcr, Fttsc010State),
+ VMSTATE_END_OF_LIST(),
+ }
+};
+
+static void fttsc010_class_init(ObjectClass *klass, void *data)
+{
+ SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
+ DeviceClass *dc = DEVICE_CLASS(klass);
+
+ k->init = fttsc010_init;
+ dc->reset = fttsc010_reset;
+ dc->vmsd = &vmstate_fttsc010;
+ dc->no_user = 1;
+}
+
+static const TypeInfo fttsc010_info = {
+ .name = TYPE_FTTSC010,
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(Fttsc010State),
+ .class_init = fttsc010_class_init,
+};
+
+static void fttsc010_register_types(void)
+{
+ type_register_static(&fttsc010_info);
+}
+
+type_init(fttsc010_register_types)
diff --git a/hw/arm/fttsc010.h b/hw/arm/fttsc010.h
new file mode 100644
index 0000000..10ae937
--- /dev/null
+++ b/hw/arm/fttsc010.h
@@ -0,0 +1,23 @@
+/*
+ * Faraday FTTSC010 touchscreen driver
+ *
+ * Copyright (C) 2012 Faraday Technology
+ * Written by Dante Su <dant...@faraday-tech.com>
+ *
+ * This file is licensed under GNU GPL v2+.
+ */
+
+#ifndef HW_ARM_FTTSC010_H
+#define HW_ARM_FTTSC010_H
+
+#define REG_CR 0x00 /* Control Register */
+#define REG_ISR 0x04 /* Interrupt Status Register */
+#define REG_IMR 0x08 /* Interrupt Mask Register */
+#define REG_VER 0x0C /* Version Register */
+#define REG_CSR 0x30 /* Clock & Sample Rate Register */
+#define REG_PFR 0x34 /* Panel Function Register */
+#define REG_DCR 0x38 /* Delay Control Register */
+#define REG_XYR 0x3C /* Touchscreen X,Y-Axis Register */
+#define REG_ZR 0x4C /* Touchscreen Z-Axis (Pressure) Register */
+
+#endif
--
1.7.9.5
