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Commit cb4493d8 authored by Rick Huang's avatar Rick Huang Committed by Fei Mao
Browse files

input: touchscreen: st: add touch notification when suspend 



When tap or swipe in a dedicated region, tp driver will notify
the subsystem/driver who has registered.
And this feature is not enabled by default; write the sysfs node
to enable it by demand.

Change-Id: Ie6312e8a0680b0abb9fed9a647bc9cee36985286
Signed-off-by: default avatarRick Huang <rhuang@codeaurora.org>
Signed-off-by: default avatarFei Mao <feim1@codeaurora.org>
parent 1a402819

drivers/input/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -6,7 +6,7 @@ 
# Each configuration option enables a list of files.



obj-$(CONFIG_INPUT)		+= input-core.o

input-core-y := input.o input-compat.o input-mt.o ff-core.o

input-core-y := input.o input-compat.o input-mt.o ff-core.o event_notify.o



obj-$(CONFIG_INPUT_FF_MEMLESS)	+= ff-memless.o

obj-$(CONFIG_INPUT_POLLDEV)	+= input-polldev.o

drivers/input/event_notify.c

0 → 100644
+34 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

/*

 * Copyright (c) 2019, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and

 * only version 2 as published by the Free Software Foundation.

 *

 */



#include <linux/export.h>

#include <linux/notifier.h>

#include <linux/input/touch_event_notify.h>



static BLOCKING_NOTIFIER_HEAD(touch_notifier_list);



int touch_event_register_notifier(struct notifier_block *nb)

{

	return blocking_notifier_chain_register(&touch_notifier_list, nb);

}

EXPORT_SYMBOL(touch_event_register_notifier);



int touch_event_unregister_notifier(struct notifier_block *nb)

{

	return blocking_notifier_chain_unregister(&touch_notifier_list, nb);

}

EXPORT_SYMBOL(touch_event_unregister_notifier);



void touch_event_call_notifier(unsigned long action, void *data)

{

	blocking_notifier_call_chain(&touch_notifier_list, action, data);

}

EXPORT_SYMBOL(touch_event_call_notifier);

drivers/input/touchscreen/st/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -3,4 +3,4 @@ 
## Makefile for the STMicroelectronics touchscreen driver.

#



obj-$(CONFIG_TOUCHSCREEN_ST) += fts.o fts_gui.o fts_driver_test.o fts_lib/
 
obj-$(CONFIG_TOUCHSCREEN_ST) += fts.o fts_gui.o fts_driver_test.o fts_aoi_event.o fts_lib/

drivers/input/touchscreen/st/fts.c

+99 −60
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

/*

 * fts.c

 *

 * FTS Capacitive touch screen controller (FingerTipS)

 *

 * Copyright (C) 2016-2019, STMicroelectronics Limited.

 * Authors: AMG(Analog Mems Group)

 *
@@ -47,6 +43,7 @@ 
#include <linux/input/mt.h>

#endif



#include <linux/input/touch_event_notify.h>



#include "fts.h"

#include "fts_lib/ftsCompensation.h"
@@ -60,8 +57,6 @@ 
#include "fts_lib/ftsTool.h"

#include "linux/moduleparam.h"







#define LINK_KOBJ_NAME "tp"



/*
@@ -70,7 +65,6 @@ 
 */

// #define FTS_USE_POLLING_MODE





/*

 * Event installer helpers

 */
@@ -80,7 +74,6 @@ 
#define install_handler(_i, _evt, _hnd) \

	(_i->event_dispatch_table[event_id(_evt)].handler = handler_name(_hnd))





/*

 * Asyncronouns command helper

 */
@@ -100,7 +93,6 @@ do { \ 
static struct class *fts_cmd_class;

#endif





//struct chipInfo ftsInfo;



/**
@@ -256,7 +248,6 @@ static ssize_t fts_fwupdate_show(struct device *dev, 
	return snprintf(buf, PAGE_SIZE, "AA%08XBB\n", info->fwupdate_stat);

}





/****UTILITIES (current fw_ver/conf_id, active mode, file fw_ver/conf_id)****/

/**

 * cat appid show on the terminal fw_version.config_id of
@@ -288,7 +279,6 @@ static ssize_t fts_mode_active_show(struct device *dev, 
	return snprintf(buf, PAGE_SIZE, "AA%08XBB\n", info->mode);

}





/**

 * cat fw_file_test show on the terminal fw_version and config_id of the FW

 * stored in the fw file/header file
@@ -315,7 +305,6 @@ static ssize_t fts_fw_test_show(struct device *dev, 
	return 0;

}





/**

 * cat lockdown_info to show the lockdown info on the terminal

 * (example output in the terminal = "AA00000000X1X2..X10BB" )
@@ -389,7 +378,6 @@ static ssize_t fts_strength_frame_store(struct device *dev, 
	return count;

}





static ssize_t fts_strength_frame_show(struct device *dev,

		struct device_attribute *attr, char *buf)

{
@@ -735,7 +723,6 @@ static ssize_t fts_feature_enable_show(struct device *dev, 
			tag, __func__, feature_feasibility);

	}





	all_strbuff = kmalloc(size, GFP_KERNEL);

	if (all_strbuff != NULL) {

		memset(all_strbuff, 0, size);
@@ -809,7 +796,6 @@ static ssize_t fts_edge_rej_show(struct device *dev, 
	return count;

}





static ssize_t fts_edge_rej_store(struct device *dev,

	struct device_attribute *attr, const char *buf, size_t count)

{
@@ -819,7 +805,6 @@ static ssize_t fts_edge_rej_store(struct device *dev, 
	struct i2c_client *client = to_i2c_client(dev);

	struct fts_ts_info *info = i2c_get_clientdata(client);





	/**

	 * in case of a different elaboration of the input,

	 * just modify this initial part of the code
@@ -908,7 +893,6 @@ static ssize_t fts_corner_rej_show(struct device *dev, 
	return count;

}





static ssize_t fts_corner_rej_store(struct device *dev,

	struct device_attribute *attr, const char *buf, size_t count)

{
@@ -1015,7 +999,6 @@ static ssize_t fts_edge_palm_rej_show(struct device *dev, 
	return count;

}





static ssize_t fts_edge_palm_rej_store(struct device *dev,

	struct device_attribute *attr, const char *buf, size_t count)

{
@@ -1114,7 +1097,6 @@ static ssize_t fts_charger_mode_show(struct device *dev, 
	return count;

}





static ssize_t fts_charger_mode_store(struct device *dev,

	struct device_attribute *attr, const char *buf, size_t count)

{
@@ -1216,7 +1198,6 @@ static ssize_t fts_glove_mode_show(struct device *dev, 
	return count;

}





static ssize_t fts_glove_mode_store(struct device *dev,

	struct device_attribute *attr, const char *buf, size_t count)

{
@@ -1315,7 +1296,6 @@ static ssize_t fts_vr_mode_show(struct device *dev, 
	return count;

}





static ssize_t fts_vr_mode_store(struct device *dev,

	struct device_attribute *attr, const char *buf, size_t count)

{
@@ -1325,7 +1305,6 @@ static ssize_t fts_vr_mode_store(struct device *dev, 
	struct i2c_client *client = to_i2c_client(dev);

	struct fts_ts_info *info = i2c_get_clientdata(client);





	/**

	 * in case of a different elaboration of the input,

	 * just modify this initial part of the code
@@ -1418,7 +1397,6 @@ static ssize_t fts_cover_mode_show(struct device *dev, 
	return count;

}





static ssize_t fts_cover_mode_store(struct device *dev,

	struct device_attribute *attr, const char *buf, size_t count)

{
@@ -1517,7 +1495,6 @@ static ssize_t fts_stylus_mode_show(struct device *dev, 
	return count;

}





static ssize_t fts_stylus_mode_store(struct device *dev,

	struct device_attribute *attr, const char *buf, size_t count)

{
@@ -1527,7 +1504,6 @@ static ssize_t fts_stylus_mode_store(struct device *dev, 
	struct i2c_client *client = to_i2c_client(dev);

	struct fts_ts_info *info = i2c_get_clientdata(client);





	/**

	 * in case of a different elaboration of the input,

	 * just modify this initial part of the code
@@ -1562,7 +1538,6 @@ static ssize_t fts_stylus_mode_store(struct device *dev, 
		}

	}





	return count;

}

#endif
@@ -1756,7 +1731,6 @@ static ssize_t fts_gesture_mask_show(struct device *dev, 
	return count;

}





static ssize_t fts_gesture_mask_store(struct device *dev,

	struct device_attribute *attr, const char *buf, size_t count)

{
@@ -1881,7 +1855,6 @@ static ssize_t fts_add_custom_gesture_show(struct device *dev, 
	return count;

}





static ssize_t fts_add_custom_gesture_store(struct device *dev,

	struct device_attribute *attr, const char *buf, size_t count)

{
@@ -2162,8 +2135,6 @@ static ssize_t fts_gesture_coordinates_store(struct device *dev, 
}

#endif







/***************** PRODUCTION TEST ****************/

static ssize_t fts_stm_cmd_store(struct device *dev,

	struct device_attribute *attr, const char *buf, size_t count)
@@ -2519,7 +2490,6 @@ static ssize_t fts_stm_cmd_show(struct device *dev, 
				strlcat(all_strbuff, buff, 4);

			}





			/* Copying self raw data Sense */

			for (j = 0; j < frameSS.header.sense_node; j++) {

				snprintf(buff, sizeof(buff), "%04X",
@@ -2751,7 +2721,6 @@ static int fts_command(struct fts_ts_info *info, unsigned char cmd) 
	return ret;

}





void fts_input_report_key(struct fts_ts_info *info, int key_code)

{

	mutex_lock(&info->input_report_mutex);
@@ -2762,7 +2731,6 @@ void fts_input_report_key(struct fts_ts_info *info, int key_code) 
	mutex_unlock(&info->input_report_mutex);

}





/*

 * New Interrupt handle implementation

 */
@@ -2798,6 +2766,7 @@ static void fts_enter_pointer_event_handler(struct fts_ts_info *info, 
	int minor;

	int major, distance;

	u8 touchsize;

	struct touch_event *touch = NULL;



	distance = 0;

	if (!info->resume_bit)
@@ -2828,9 +2797,6 @@ static void fts_enter_pointer_event_handler(struct fts_ts_info *info, 
	input_mt_slot(info->input_dev, touchId);

	input_mt_report_slot_state(info->input_dev, MT_TOOL_FINGER, 1);



	logError(0, "%s %s : TouchID = %d,Touchcount = %d,minor:%d,major:%d\n",

		tag, __func__, touchId, touchcount, minor, major);



	if (touchcount == 1) {

		input_report_key(info->input_dev, BTN_TOUCH, 1);

		input_report_key(info->input_dev, BTN_TOOL_FINGER, 1);
@@ -2840,6 +2806,40 @@ static void fts_enter_pointer_event_handler(struct fts_ts_info *info, 
	input_report_abs(info->input_dev, ABS_MT_TOUCH_MAJOR, major);

	input_report_abs(info->input_dev, ABS_MT_TOUCH_MINOR, minor);

	input_report_abs(info->input_dev, ABS_MT_DISTANCE, distance);



	if (!info->aoi_notify_enabled)

		goto no_report;



	if ((x >= info->aoi_left && x < info->aoi_right)

		&& (y >= info->aoi_top && y < info->aoi_bottom)) {



		touch = &info->event[touchId];

		touch->x = x;

		touch->y = y;

		touch->fid = touchId;

		touch->type = 'M';

		do_gettimeofday(&touch->time);



		if (!test_bit(touchId, &info->finger_pressed)) {

			touch->type = 'D';

			__set_bit(touchId, &info->finger_pressed);

		}

		__set_bit(touchId, &info->event_mask);

	} else {

		if (test_bit(touchId, &info->finger_pressed)) {



			touch = &info->event[touchId];

			touch->x = 0;

			touch->y = 0;

			touch->fid = touchId;

			touch->type = 'U';

			do_gettimeofday(&touch->time);



			__clear_bit(touchId, &info->finger_pressed);

			__set_bit(touchId, &info->event_mask);

		}

	}



no_report:

	return;
@@ -2849,9 +2849,9 @@ static void fts_enter_pointer_event_handler(struct fts_ts_info *info, 
static void fts_leave_pointer_event_handler(struct fts_ts_info *info,

			unsigned char *event)

{



	unsigned char touchId, touchcount;

	u8 touchsize;

	struct touch_event *touch = NULL;



	touchId = event[1] & 0x0F;

	touchcount = (event[1] & 0xF0) >> 4;
@@ -2869,6 +2869,20 @@ static void fts_leave_pointer_event_handler(struct fts_ts_info *info, 


	input_report_abs(info->input_dev, ABS_MT_TRACKING_ID, -1);



	if (!info->aoi_notify_enabled)

		return;



	if (test_bit(touchId, &info->finger_pressed)) {

		touch = &info->event[touchId];

		touch->x = 0;

		touch->y = 0;

		touch->fid = touchId;

		touch->type = 'U';

		do_gettimeofday(&touch->time);



		__clear_bit(touchId, &info->finger_pressed);

		__set_bit(touchId, &info->event_mask);

	}

}



/* EventId : 0x05 */
@@ -3225,9 +3239,7 @@ static void fts_event_handler(struct work_struct *work) 
	 * read all the FIFO and parsing events

	 */



	/* wake_lock_timeout(&info->wakelock, HZ); */

	__pm_wakeup_event(&info->wakeup_source, HZ);

	/* logError(1, "%s %s: begin\n", tag, __func__); */

	regAdd = FIFO_CMD_READONE;



	for (count = 0; count < FIFO_DEPTH; count++) {
@@ -3237,9 +3249,6 @@ static void fts_event_handler(struct work_struct *work) 
			eventId = data[0];

		else

			break;

		/* if(data[7]&0x20) */

		/* logError(1, "%s %s overflow ID = %02X  Last = %02X\n",*/

		/* tag, __func__, data[0], data[7]);*/



		if (eventId < EVENTID_LAST) {

			event_handler = info->event_dispatch_table[eventId];
@@ -3248,8 +3257,13 @@ static void fts_event_handler(struct work_struct *work) 
	}

	input_sync(info->input_dev);



	/* re-enable interrupts */

	fts_interrupt_enable(info);



	if (info->event_mask) {

		touch_event_call_notifier(info->event_mask,

				(void *)&info->event[0]);

		info->event_mask = 0;

	}

}



static int cx_crc_check(void)
@@ -3538,7 +3552,6 @@ static int fts_interrupt_install(struct fts_ts_info *info) 


static void fts_interrupt_uninstall(struct fts_ts_info *info)

{



	fts_disableInterrupt();



	kfree(info->event_dispatch_table);
@@ -3654,7 +3667,6 @@ int fts_chip_powercycle(struct fts_ts_info *info) 
	/* time needed by the regulators for reaching the regime values */

	msleep(20);





	if (info->bdata->reset_gpio != GPIO_NOT_DEFINED) {

		/* time to wait before bring up the reset */

		/* gpio after the power up of the regulators */
@@ -3718,7 +3730,6 @@ int fts_chip_powercycle2(struct fts_ts_info *info, unsigned long sleep) 
	/* time needed by the regulators for reaching the regime values */

	msleep(500);





	if (info->bdata->reset_gpio != GPIO_NOT_DEFINED) {

		/*

		 * time to wait before bring up the reset
@@ -4045,7 +4056,6 @@ static int fts_mode_handler(struct fts_ts_info *info, int force) 
	return res;

}





static void fts_resume_work(struct work_struct *work)

{

	struct fts_ts_info *info;
@@ -4087,7 +4097,6 @@ static void fts_resume_work(struct work_struct *work) 
	fts_interrupt_enable(info);

}





static void fts_suspend_work(struct work_struct *work)

{

	struct fts_ts_info *info;
@@ -4119,12 +4128,10 @@ static void fts_suspend_work(struct work_struct *work) 


}





#if defined(CONFIG_FB_MSM)

static int fts_fb_state_chg_callback(struct notifier_block *nb,

			unsigned long val, void *data)

{



	struct fts_ts_info *info = container_of(nb,

			struct fts_ts_info, notifier);

	struct fb_event *evdata = data;
@@ -4193,17 +4200,28 @@ static int fts_fb_state_chg_callback(struct notifier_block *nb, 
		case MSM_DRM_BLANK_POWERDOWN:

			if (info->sensor_sleep)

				break;

			logError(0, "%s %s: MSM_DRM_BLANK_UNBLANK\n",

					tag, __func__);



			if (info->aoi_notify_enabled)

				info->aoi_wake_on_suspend = true;

			else

				info->aoi_wake_on_suspend = false;



			if (info->aoi_wake_on_suspend)

				info->sensor_sleep = true;

			else

				queue_work(info->event_wq, &info->suspend_work);

			break;



		case MSM_DRM_BLANK_UNBLANK:

			if (!info->sensor_sleep)

				break;

			logError(0, "%s %s: MSM_DRM_BLANK_UNBLANK\n",

					tag, __func__);



			if (!info->resume_bit)

				queue_work(info->event_wq, &info->resume_work);



			if (info->aoi_wake_on_suspend)

				info->sensor_sleep = false;



			break;

		default:

			break;
@@ -4661,7 +4679,6 @@ static int fts_probe(struct i2c_client *client, 


	mutex_init(&(info->input_report_mutex));





#ifdef PHONE_GESTURE

	mutex_init(&gestureMask_mutex);

#endif
@@ -4742,7 +4759,6 @@ static int fts_probe(struct i2c_client *client, 
	}

#endif





#ifdef DRIVER_TEST

	if (fts_cmd_class == NULL)

		fts_cmd_class = class_create(THIS_MODULE, FTS_TS_DRV_NAME);
@@ -4764,9 +4780,33 @@ static int fts_probe(struct i2c_client *client, 
		goto ProbeErrorExit_11;

	}

#endif



	if (fts_cmd_class == NULL)

		fts_cmd_class = class_create(THIS_MODULE, FTS_TS_DRV_NAME);

	info->aoi_cmd_dev = device_create(fts_cmd_class,

			NULL, DCHIP_ID_0, info, "touch_aoi");

	if (IS_ERR(info->aoi_cmd_dev)) {

		logError(1,

			"%s ERROR: Failed to create device for the sysfs\n",

			tag);

		goto ProbeErrorExit_10;

	}



	dev_set_drvdata(info->aoi_cmd_dev, info);



	error = sysfs_create_group(&info->aoi_cmd_dev->kobj,

			&aoi_cmd_attr_group);

	if (error) {

		logError(1, "%s ERROR: Failed to create sysfs group\n", tag);

		goto ProbeErrorExit_11;

	}



	queue_delayed_work(info->fwu_workqueue, &info->fwu_work,

			msecs_to_jiffies(EXP_FN_WORK_DELAY_MS));

	logError(1, "%s Probe Finished!\n", tag);



	info->event_mask = 0;



	return OK;



	/* error exit path */
@@ -4935,7 +4975,6 @@ static void __exit fts_driver_exit(void) 
	i2c_del_driver(&fts_i2c_driver);

}





late_initcall(fts_driver_init);

module_exit(fts_driver_exit);

drivers/input/touchscreen/st/fts.h

+19 −2
Original line number Diff line number Diff line
@@ -24,6 +24,7 @@ 


/*#include <linux/wakelock.h>*/

#include <linux/pm_wakeup.h>

#include <linux/input/touch_event_notify.h>



#include "fts_lib/ftsSoftware.h"

#include "fts_lib/ftsHardware.h"
@@ -311,6 +312,20 @@ struct fts_ts_info { 


	uint8_t *i2c_data;

	uint8_t i2c_data_len;



	struct device *aoi_cmd_dev;

	bool aoi_notify_enabled;

	bool aoi_wake_on_suspend;



	unsigned long event_mask;

	unsigned long finger_pressed;

	struct touch_event event[FIFO_DEPTH];



	/* aoi region */

	int aoi_left;

	int aoi_top;

	int aoi_bottom;

	int aoi_right;

};



extern struct chipInfo ftsInfo;
@@ -323,6 +338,8 @@ int fts_chip_powercycle2(struct fts_ts_info *info, unsigned long sleep); 
extern int input_register_notifier_client(struct notifier_block *nb);

extern int input_unregister_notifier_client(struct notifier_block *nb);



extern struct attribute_group aoi_cmd_attr_group;



#ifdef SCRIPTLESS

extern struct attribute_group i2c_cmd_attr_group;

#endif