From 8f0b9dedfad0f52279f91ff2a69ca61fc5227066 Mon Sep 17 00:00:00 2001
From: Tim Zimmermann <tim@linux4.de>
Date: Sat, 25 Sep 2021 17:30:12 +0200
Subject: [PATCH] drivers: input: wacom: disable touchscreen input when spen is
 in use

Change-Id: Icb71fbf9d10d9c74f313f7fec01c8aa5f858dfc2
---
 drivers/input/touchscreen/himax/himax_83102E/himax_common.c | 5 +++++
 drivers/input/wacom/wacom.h                                 | 5 +++++
 drivers/input/wacom/wacom_i2c.c                             | 4 ++++
 3 files changed, 14 insertions(+)

diff --git a/drivers/input/touchscreen/himax/himax_83102E/himax_common.c b/drivers/input/touchscreen/himax/himax_83102E/himax_common.c
index 514de7944b8a..09009ed75ff4 100644
--- a/drivers/input/touchscreen/himax/himax_83102E/himax_common.c
+++ b/drivers/input/touchscreen/himax/himax_83102E/himax_common.c
@@ -239,6 +239,9 @@ bool FAKE_POWER_KEY_SEND = true;
 	struct proc_dir_entry *himax_proc_HSEN_file = NULL;
 #endif
 
+bool himax_epen_mode = false;
+EXPORT_SYMBOL(himax_epen_mode);
+
 #if defined(HX_PALM_REPORT)
 static int himax_palm_detect(uint8_t *buf)
 {
@@ -2384,6 +2387,8 @@ static void himax_finger_report(struct himax_ts_data *ts)
 	int i = 0;
 	bool valid = false;
 
+	if (himax_epen_mode)
+		return;
 
 	if (g_ts_dbg != 0) {
 		I("%s:start\n", __func__);
diff --git a/drivers/input/wacom/wacom.h b/drivers/input/wacom/wacom.h
index 47a36b084ccd..6acd7f525994 100644
--- a/drivers/input/wacom/wacom.h
+++ b/drivers/input/wacom/wacom.h
@@ -397,4 +397,9 @@ extern int set_spen_mode(int mode);
 #ifdef CONFIG_SEC_FACTORY
 bool wacom_check_ub(struct wacom_i2c *wac_i2c);
 #endif
+
+#ifdef CONFIG_TOUCHSCREEN_HIMAX_SPI
+extern bool himax_epen_mode;
+#endif
+
 #endif /* _LINUX_WACOM_H_ */
diff --git a/drivers/input/wacom/wacom_i2c.c b/drivers/input/wacom/wacom_i2c.c
index 7fa71e84afa8..0a03800e1c3a 100644
--- a/drivers/input/wacom/wacom_i2c.c
+++ b/drivers/input/wacom/wacom_i2c.c
@@ -1271,6 +1271,10 @@ int wacom_i2c_coord(struct wacom_i2c *wac_i2c)
 		wac_i2c->localscan_mode = false;
 	}
 
+#ifdef CONFIG_TOUCHSCREEN_HIMAX_SPI
+	himax_epen_mode = wac_i2c->pen_prox || wac_i2c->pen_pressed;
+#endif
+
 	return 0;
 }