android/android_kernel_samsung_sm8650-modules
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

touch: add qti dummy touch driver

Browse Source 
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>
This commit is contained in:
Jeykumar Sankaran 2022-05-16 18:38:21 -07:00
parent 5951b6d9d7
commit 9d186e44c9
6 changed files with 109 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
Android.mk
View File

@ -57,4 +57,15 @@ LOCAL_MODULE_PATH := $(KERNEL_MODULES_OUT)
include $(DLKM_DIR)/Build_external_kernelmodule.mk
###########################################################
###########################################################
include $(CLEAR_VARS)
LOCAL_SRC_FILES := $(wildcard $(LOCAL_PATH)/**/*) $(wildcard $(LOCAL_PATH)/*)
LOCAL_MODULE := dummy_ts.ko
LOCAL_MODULE_KBUILD_NAME := dummy_ts.ko
LOCAL_MODULE_TAGS := optional
#LOCAL_MODULE_DEBUG_ENABLE := true
LOCAL_MODULE_PATH := $(KERNEL_MODULES_OUT)
include $(DLKM_DIR)/Build_external_kernelmodule.mk
###########################################################
endif # DLKM check

6
Kbuild
View File

@ -115,4 +115,10 @@ ifeq ($(CONFIG_TOUCHSCREEN_ATMEL_MXT), y)
obj-$(CONFIG_MSM_TOUCH) += atmel_mxt_ts.o
endif
ifeq ($(CONFIG_TOUCHSCREEN_DUMMY), y)
dummy_ts-y := ./dummy_touch/dummy_touch.o
obj-$(CONFIG_MSM_TOUCH) += dummy_ts.o
endif
CDEFINES += -DBUILD_TIMESTAMP=\"$(shell date -u +'%Y-%m-%dT%H:%M:%SZ')\"

1
config/gki_kalamatouch.conf
View File

@ -1,4 +1,5 @@
export CONFIG_TOUCHSCREEN_NT36XXX_I2C=y
export CONFIG_TOUCHSCREEN_GOODIX_BRL=y
export CONFIG_TOUCHSCREEN_ATMEL_MXT=y
export CONFIG_TOUCHSCREEN_DUMMY=y
export CONFIG_MSM_TOUCH=m

87
dummy_touch/dummy_touch.c Normal file
View File

@ -0,0 +1,87 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
*/
#include <linux/module.h>
#include <linux/input.h>
#include <linux/platform_device.h>
#include <linux/mod_devicetable.h>
MODULE_DESCRIPTION("QTI dummy touchscreen driver");
MODULE_LICENSE("GPL v2");
#define DEVICE_COMPATIBLE "qti,dummy_ts"
#define DRIVER_NAME "qti_dummy_ts"
static int dummy_touch_probe(struct platform_device *device)
{
struct input_dev *touch_dev = NULL;
int rc;
touch_dev = input_allocate_device();
if (!touch_dev) {
pr_err("%s: input device allocate failed\n", __func__);
return -ENOMEM;
}
touch_dev->name = "qti_dummy_ts";
touch_dev->id.bustype = BUS_VIRTUAL;
touch_dev->evbit[0] = BIT_MASK(EV_KEY);
touch_dev->keybit[BIT_WORD(BTN_0)] = BIT_MASK(BTN_0);
touch_dev->dev.parent = NULL;
rc = input_register_device(touch_dev);
if (rc) {
pr_err("%s: touch device register failed, rc = %d\n", __func__, rc);
input_free_device(touch_dev);
return rc;
}
pr_info("qti_dummy_ts device registered\n");
platform_set_drvdata(device, (void *)touch_dev);
return 0;
}
static int dummy_touch_remove(struct platform_device *device)
{
struct input_dev *touch_dev = NULL;
touch_dev = (struct input_dev *)platform_get_drvdata(device);
if (touch_dev)
input_free_device(touch_dev);
return 0;
}
static const struct of_device_id dummy_touch_id[] = {
{.compatible = DEVICE_COMPATIBLE},
{}
};
static struct platform_driver dummy_touch_driver = {
.driver = {
.name = DRIVER_NAME,
.of_match_table = dummy_touch_id,
},
.probe = dummy_touch_probe,
.remove = dummy_touch_remove,
};
static int __init dummy_touch_init(void)
{
platform_driver_register(&dummy_touch_driver);
return 0;
}
static void __exit dummy_touch_exit(void)
{
platform_driver_unregister(&dummy_touch_driver);
}
late_initcall(dummy_touch_init);
module_exit(dummy_touch_exit);

3
touch_driver_board.mk
View File

@ -3,6 +3,7 @@ ifneq ($(TARGET_BOARD_AUTO),true)
ifeq ($(call is-board-platform-in-list,$(TARGET_BOARD_PLATFORM)),true)
BOARD_VENDOR_KERNEL_MODULES += $(KERNEL_MODULES_OUT)/nt36xxx-i2c.ko \
$(KERNEL_MODULES_OUT)/goodix_ts.ko \
$(KERNEL_MODULES_OUT)/atmel_mxt_ts.ko
$(KERNEL_MODULES_OUT)/atmel_mxt_ts.ko \
$(KERNEL_MODULES_OUT)/dummy_ts.ko
endif
endif

3
touch_driver_product.mk
View File

@ -1,4 +1,5 @@
PRODUCT_PACKAGES += $(KERNEL_MODULES_OUT)/nt36xxx-i2c.ko \
$(KERNEL_MODULES_OUT)/goodix_ts.ko \
$(KERNEL_MODULES_OUT)/atmel_mxt_ts.ko
$(KERNEL_MODULES_OUT)/atmel_mxt_ts.ko \
$(KERNEL_MODULES_OUT)/dummy_ts.ko