mirror of https://github.com/xemu-project/xemu.git
hw/input: Drop ADS7846 device
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.maydell@linaro.org> Reviewed-by: Thomas Huth <thuth@redhat.com> Message-id: 20240903160751.4100218-3-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell
parent
b62151489a
commit
11bbcf2789
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@ -939,7 +939,6 @@ F: hw/*/pxa2xx*
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F: hw/display/tc6393xb.c
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F: hw/gpio/max7310.c
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F: hw/gpio/zaurus.c
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F: hw/input/ads7846.c
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F: hw/misc/mst_fpga.c
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F: hw/adc/max111x.c
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F: include/hw/adc/max111x.h
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@ -1,9 +1,6 @@
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config ADB
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bool
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config ADS7846
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bool
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config LM832X
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bool
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depends on I2C
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@ -1,186 +0,0 @@
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/*
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* TI ADS7846 / TSC2046 chip emulation.
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*
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* Copyright (c) 2006 Openedhand Ltd.
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* Written by Andrzej Zaborowski <balrog@zabor.org>
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*
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* This code is licensed under the GNU GPL v2.
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*
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* Contributions after 2012-01-13 are licensed under the terms of the
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* GNU GPL, version 2 or (at your option) any later version.
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*/
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#include "qemu/osdep.h"
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#include "hw/irq.h"
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#include "hw/ssi/ssi.h"
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#include "migration/vmstate.h"
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#include "qemu/module.h"
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#include "ui/console.h"
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#include "qom/object.h"
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struct ADS7846State {
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SSIPeripheral ssidev;
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qemu_irq interrupt;
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int input[8];
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int pressure;
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int noise;
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int cycle;
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int output;
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};
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#define TYPE_ADS7846 "ads7846"
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OBJECT_DECLARE_SIMPLE_TYPE(ADS7846State, ADS7846)
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/* Control-byte bitfields */
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#define CB_PD0 (1 << 0)
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#define CB_PD1 (1 << 1)
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#define CB_SER (1 << 2)
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#define CB_MODE (1 << 3)
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#define CB_A0 (1 << 4)
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#define CB_A1 (1 << 5)
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#define CB_A2 (1 << 6)
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#define CB_START (1 << 7)
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#define X_AXIS_DMAX 3470
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#define X_AXIS_MIN 290
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#define Y_AXIS_DMAX 3450
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#define Y_AXIS_MIN 200
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#define ADS_VBAT 2000
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#define ADS_VAUX 2000
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#define ADS_TEMP0 2000
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#define ADS_TEMP1 3000
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#define ADS_XPOS(x, y) (X_AXIS_MIN + ((X_AXIS_DMAX * (x)) >> 15))
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#define ADS_YPOS(x, y) (Y_AXIS_MIN + ((Y_AXIS_DMAX * (y)) >> 15))
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#define ADS_Z1POS(x, y) 600
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#define ADS_Z2POS(x, y) (600 + 6000 / ADS_XPOS(x, y))
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static void ads7846_int_update(ADS7846State *s)
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{
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if (s->interrupt)
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qemu_set_irq(s->interrupt, s->pressure == 0);
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}
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static uint32_t ads7846_transfer(SSIPeripheral *dev, uint32_t value)
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{
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ADS7846State *s = ADS7846(dev);
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switch (s->cycle ++) {
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case 0:
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if (!(value & CB_START)) {
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s->cycle = 0;
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break;
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}
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s->output = s->input[(value >> 4) & 7];
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/* Imitate the ADC noise, some drivers expect this. */
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s->noise = (s->noise + 3) & 7;
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switch ((value >> 4) & 7) {
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case 1: s->output += s->noise ^ 2; break;
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case 3: s->output += s->noise ^ 0; break;
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case 4: s->output += s->noise ^ 7; break;
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case 5: s->output += s->noise ^ 5; break;
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}
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if (value & CB_MODE)
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s->output >>= 4; /* 8 bits instead of 12 */
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break;
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case 1:
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s->cycle = 0;
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break;
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}
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return s->output;
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}
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static void ads7846_ts_event(void *opaque,
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int x, int y, int z, int buttons_state)
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{
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ADS7846State *s = opaque;
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if (buttons_state) {
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x = 0x7fff - x;
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s->input[1] = ADS_XPOS(x, y);
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s->input[3] = ADS_Z1POS(x, y);
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s->input[4] = ADS_Z2POS(x, y);
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s->input[5] = ADS_YPOS(x, y);
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}
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if (s->pressure == !buttons_state) {
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s->pressure = !!buttons_state;
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ads7846_int_update(s);
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}
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}
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static int ads7856_post_load(void *opaque, int version_id)
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{
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ADS7846State *s = opaque;
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s->pressure = 0;
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ads7846_int_update(s);
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return 0;
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}
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static const VMStateDescription vmstate_ads7846 = {
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.name = "ads7846",
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.version_id = 1,
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.minimum_version_id = 1,
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.post_load = ads7856_post_load,
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.fields = (const VMStateField[]) {
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VMSTATE_SSI_PERIPHERAL(ssidev, ADS7846State),
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VMSTATE_INT32_ARRAY(input, ADS7846State, 8),
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VMSTATE_INT32(noise, ADS7846State),
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VMSTATE_INT32(cycle, ADS7846State),
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VMSTATE_INT32(output, ADS7846State),
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VMSTATE_END_OF_LIST()
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}
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};
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static void ads7846_realize(SSIPeripheral *d, Error **errp)
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{
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DeviceState *dev = DEVICE(d);
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ADS7846State *s = ADS7846(d);
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qdev_init_gpio_out(dev, &s->interrupt, 1);
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s->input[0] = ADS_TEMP0; /* TEMP0 */
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s->input[2] = ADS_VBAT; /* VBAT */
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s->input[6] = ADS_VAUX; /* VAUX */
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s->input[7] = ADS_TEMP1; /* TEMP1 */
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/* We want absolute coordinates */
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qemu_add_mouse_event_handler(ads7846_ts_event, s, 1,
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"QEMU ADS7846-driven Touchscreen");
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ads7846_int_update(s);
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vmstate_register_any(NULL, &vmstate_ads7846, s);
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}
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static void ads7846_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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SSIPeripheralClass *k = SSI_PERIPHERAL_CLASS(klass);
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k->realize = ads7846_realize;
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k->transfer = ads7846_transfer;
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set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
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}
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static const TypeInfo ads7846_info = {
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.name = TYPE_ADS7846,
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.parent = TYPE_SSI_PERIPHERAL,
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.instance_size = sizeof(ADS7846State),
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.class_init = ads7846_class_init,
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};
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static void ads7846_register_types(void)
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{
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type_register_static(&ads7846_info);
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}
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type_init(ads7846_register_types)
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@ -1,6 +1,5 @@
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system_ss.add(files('hid.c'))
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system_ss.add(when: 'CONFIG_ADB', if_true: files('adb.c', 'adb-mouse.c', 'adb-kbd.c'))
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system_ss.add(when: 'CONFIG_ADS7846', if_true: files('ads7846.c'))
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system_ss.add(when: 'CONFIG_LM832X', if_true: files('lm832x.c'))
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system_ss.add(when: 'CONFIG_PCKBD', if_true: files('pckbd.c'))
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system_ss.add(when: 'CONFIG_PL050', if_true: files('pl050.c'))
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