9d186e44c9
Add support for dummy touchscreen driver to help boot up the HW with operating systems requiring at least one input devices in pre-silicon platforms. Change-Id: I0bb5c5a3dd2a8d945c3b0ecee738652ec9d2b561 Signed-off-by: Jeykumar Sankaran <quic_jeykumar@quicinc.com>
88 lines
1.9 KiB
C
88 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
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*/
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#include <linux/module.h>
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#include <linux/input.h>
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#include <linux/platform_device.h>
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#include <linux/mod_devicetable.h>
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MODULE_DESCRIPTION("QTI dummy touchscreen driver");
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MODULE_LICENSE("GPL v2");
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#define DEVICE_COMPATIBLE "qti,dummy_ts"
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#define DRIVER_NAME "qti_dummy_ts"
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static int dummy_touch_probe(struct platform_device *device)
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{
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struct input_dev *touch_dev = NULL;
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int rc;
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touch_dev = input_allocate_device();
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if (!touch_dev) {
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pr_err("%s: input device allocate failed\n", __func__);
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return -ENOMEM;
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}
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touch_dev->name = "qti_dummy_ts";
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touch_dev->id.bustype = BUS_VIRTUAL;
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touch_dev->evbit[0] = BIT_MASK(EV_KEY);
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touch_dev->keybit[BIT_WORD(BTN_0)] = BIT_MASK(BTN_0);
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touch_dev->dev.parent = NULL;
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rc = input_register_device(touch_dev);
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if (rc) {
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pr_err("%s: touch device register failed, rc = %d\n", __func__, rc);
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input_free_device(touch_dev);
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return rc;
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}
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pr_info("qti_dummy_ts device registered\n");
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platform_set_drvdata(device, (void *)touch_dev);
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return 0;
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}
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static int dummy_touch_remove(struct platform_device *device)
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{
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struct input_dev *touch_dev = NULL;
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touch_dev = (struct input_dev *)platform_get_drvdata(device);
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if (touch_dev)
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input_free_device(touch_dev);
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return 0;
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}
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static const struct of_device_id dummy_touch_id[] = {
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{.compatible = DEVICE_COMPATIBLE},
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{}
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};
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static struct platform_driver dummy_touch_driver = {
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.driver = {
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.name = DRIVER_NAME,
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.of_match_table = dummy_touch_id,
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},
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.probe = dummy_touch_probe,
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.remove = dummy_touch_remove,
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};
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static int __init dummy_touch_init(void)
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{
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platform_driver_register(&dummy_touch_driver);
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return 0;
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}
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static void __exit dummy_touch_exit(void)
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{
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platform_driver_unregister(&dummy_touch_driver);
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}
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late_initcall(dummy_touch_init);
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module_exit(dummy_touch_exit);
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