The ADS7846 touchscreen controller device was used only by
the XScale-based PDA machine types. Now that they have been
removed, this device is not used in the tree and can be
deleted.
Signed-off-by: Peter Maydell <peter.mayd...@linaro.org>
Reviewed-by: Thomas Huth <th...@redhat.com>
Message-id: 20240903160751.4100218-3-peter.mayd...@linaro.org
---
MAINTAINERS | 1 -
hw/input/ads7846.c | 186 -------------------------------------------
hw/input/Kconfig | 3 -
hw/input/meson.build | 1 -
4 files changed, 191 deletions(-)
delete mode 100644 hw/input/ads7846.c
diff --git a/MAINTAINERS b/MAINTAINERS
index 0c03c612cfe..42e37db3b00 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -939,7 +939,6 @@ F: hw/*/pxa2xx*
F: hw/display/tc6393xb.c
F: hw/gpio/max7310.c
F: hw/gpio/zaurus.c
-F: hw/input/ads7846.c
F: hw/misc/mst_fpga.c
F: hw/adc/max111x.c
F: include/hw/adc/max111x.h
diff --git a/hw/input/ads7846.c b/hw/input/ads7846.c
deleted file mode 100644
index cde38922165..00000000000
--- a/hw/input/ads7846.c
+++ /dev/null
@@ -1,186 +0,0 @@
-/*
- * TI ADS7846 / TSC2046 chip emulation.
- *
- * Copyright (c) 2006 Openedhand Ltd.
- * Written by Andrzej Zaborowski <bal...@zabor.org>
- *
- * This code is licensed under the GNU GPL v2.
- *
- * Contributions after 2012-01-13 are licensed under the terms of the
- * GNU GPL, version 2 or (at your option) any later version.
- */
-
-#include "qemu/osdep.h"
-#include "hw/irq.h"
-#include "hw/ssi/ssi.h"
-#include "migration/vmstate.h"
-#include "qemu/module.h"
-#include "ui/console.h"
-#include "qom/object.h"
-
-struct ADS7846State {
- SSIPeripheral ssidev;
- qemu_irq interrupt;
-
- int input[8];
- int pressure;
- int noise;
-
- int cycle;
- int output;
-};
-
-#define TYPE_ADS7846 "ads7846"
-OBJECT_DECLARE_SIMPLE_TYPE(ADS7846State, ADS7846)
-
-/* Control-byte bitfields */
-#define CB_PD0 (1 << 0)
-#define CB_PD1 (1 << 1)
-#define CB_SER (1 << 2)
-#define CB_MODE (1 << 3)
-#define CB_A0 (1 << 4)
-#define CB_A1 (1 << 5)
-#define CB_A2 (1 << 6)
-#define CB_START (1 << 7)
-
-#define X_AXIS_DMAX 3470
-#define X_AXIS_MIN 290
-#define Y_AXIS_DMAX 3450
-#define Y_AXIS_MIN 200
-
-#define ADS_VBAT 2000
-#define ADS_VAUX 2000
-#define ADS_TEMP0 2000
-#define ADS_TEMP1 3000
-#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) 600
-#define ADS_Z2POS(x, y) (600 + 6000 / ADS_XPOS(x, y))
-
-static void ads7846_int_update(ADS7846State *s)
-{
- if (s->interrupt)
- qemu_set_irq(s->interrupt, s->pressure == 0);
-}
-
-static uint32_t ads7846_transfer(SSIPeripheral *dev, uint32_t value)
-{
- ADS7846State *s = ADS7846(dev);
-
- switch (s->cycle ++) {
- case 0:
- if (!(value & CB_START)) {
- s->cycle = 0;
- break;
- }
-
- s->output = s->input[(value >> 4) & 7];
-
- /* Imitate the ADC noise, some drivers expect this. */
- s->noise = (s->noise + 3) & 7;
- switch ((value >> 4) & 7) {
- case 1: s->output += s->noise ^ 2; break;
- case 3: s->output += s->noise ^ 0; break;
- case 4: s->output += s->noise ^ 7; break;
- case 5: s->output += s->noise ^ 5; break;
- }
-
- if (value & CB_MODE)
- s->output >>= 4; /* 8 bits instead of 12 */
-
- break;
- case 1:
- s->cycle = 0;
- break;
- }
- return s->output;
-}
-
-static void ads7846_ts_event(void *opaque,
- int x, int y, int z, int buttons_state)
-{
- ADS7846State *s = opaque;
-
- if (buttons_state) {
- x = 0x7fff - x;
- s->input[1] = ADS_XPOS(x, y);
- s->input[3] = ADS_Z1POS(x, y);
- s->input[4] = ADS_Z2POS(x, y);
- s->input[5] = ADS_YPOS(x, y);
- }
-
- if (s->pressure == !buttons_state) {
- s->pressure = !!buttons_state;
-
- ads7846_int_update(s);
- }
-}
-
-static int ads7856_post_load(void *opaque, int version_id)
-{
- ADS7846State *s = opaque;
-
- s->pressure = 0;
- ads7846_int_update(s);
- return 0;
-}
-
-static const VMStateDescription vmstate_ads7846 = {
- .name = "ads7846",
- .version_id = 1,
- .minimum_version_id = 1,
- .post_load = ads7856_post_load,
- .fields = (const VMStateField[]) {
- VMSTATE_SSI_PERIPHERAL(ssidev, ADS7846State),
- VMSTATE_INT32_ARRAY(input, ADS7846State, 8),
- VMSTATE_INT32(noise, ADS7846State),
- VMSTATE_INT32(cycle, ADS7846State),
- VMSTATE_INT32(output, ADS7846State),
- VMSTATE_END_OF_LIST()
- }
-};
-
-static void ads7846_realize(SSIPeripheral *d, Error **errp)
-{
- DeviceState *dev = DEVICE(d);
- ADS7846State *s = ADS7846(d);
-
- qdev_init_gpio_out(dev, &s->interrupt, 1);
-
- s->input[0] = ADS_TEMP0; /* TEMP0 */
- s->input[2] = ADS_VBAT; /* VBAT */
- s->input[6] = ADS_VAUX; /* VAUX */
- s->input[7] = ADS_TEMP1; /* TEMP1 */
-
- /* We want absolute coordinates */
- qemu_add_mouse_event_handler(ads7846_ts_event, s, 1,
- "QEMU ADS7846-driven Touchscreen");
-
- ads7846_int_update(s);
-
- vmstate_register_any(NULL, &vmstate_ads7846, s);
-}
-
-static void ads7846_class_init(ObjectClass *klass, void *data)
-{
- DeviceClass *dc = DEVICE_CLASS(klass);
- SSIPeripheralClass *k = SSI_PERIPHERAL_CLASS(klass);
-
- k->realize = ads7846_realize;
- k->transfer = ads7846_transfer;
- set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
-}
-
-static const TypeInfo ads7846_info = {
- .name = TYPE_ADS7846,
- .parent = TYPE_SSI_PERIPHERAL,
- .instance_size = sizeof(ADS7846State),
- .class_init = ads7846_class_init,
-};
-
-static void ads7846_register_types(void)
-{
- type_register_static(&ads7846_info);
-}
-
-type_init(ads7846_register_types)
diff --git a/hw/input/Kconfig b/hw/input/Kconfig
index f86e98c8293..acfdba5c4ca 100644
--- a/hw/input/Kconfig
+++ b/hw/input/Kconfig
@@ -1,9 +1,6 @@
config ADB
bool
-config ADS7846
- bool
-
config LM832X
bool
depends on I2C
diff --git a/hw/input/meson.build b/hw/input/meson.build
index 3cc8ab85f0c..07a28c2c01c 100644
--- a/hw/input/meson.build
+++ b/hw/input/meson.build
@@ -1,6 +1,5 @@
system_ss.add(files('hid.c'))
system_ss.add(when: 'CONFIG_ADB', if_true: files('adb.c', 'adb-mouse.c',
'adb-kbd.c'))
-system_ss.add(when: 'CONFIG_ADS7846', if_true: files('ads7846.c'))
system_ss.add(when: 'CONFIG_LM832X', if_true: files('lm832x.c'))
system_ss.add(when: 'CONFIG_PCKBD', if_true: files('pckbd.c'))
system_ss.add(when: 'CONFIG_PL050', if_true: files('pl050.c'))
--
2.34.1
