From 1dd5ddc125b4625c3beb8e644ae872445d739bbc Mon Sep 17 00:00:00 2001
From: "Sergei A. Trusov" <sergei.a.trusov@ya.ru>
Date: Thu, 5 Mar 2020 19:53:06 -0800
Subject: [PATCH] Input: goodix - fix touch coordinates on Cube I15-TC
Git-commit: 1dd5ddc125b4625c3beb8e644ae872445d739bbc
Patch-mainline: v5.7-rc1
References: git-fixes

The touchscreen on the Cube I15-TC don't match the default display,
with 0,0 touches being reported when touching at the top-right of
the screen.

Add a quirk to invert the x coordinate.

Reported-and-tested-by: Arkadiy <arkan49@yandex.ru>
Signed-off-by: Sergei A. Trusov <sergei.a.trusov@ya.ru>
Reviewed-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/input/touchscreen/goodix.c |   22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

--- a/drivers/input/touchscreen/goodix.c
+++ b/drivers/input/touchscreen/goodix.c
@@ -153,6 +153,22 @@ static const struct dmi_system_id rotate
 	{}
 };
 
+/*
+ * Those tablets have their x coordinate inverted
+ */
+static const struct dmi_system_id inverted_x_screen[] = {
+#if defined(CONFIG_DMI) && defined(CONFIG_X86)
+	{
+		.ident = "Cube I15-TC",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Cube"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "I15-TC")
+		},
+	},
+#endif
+	{}
+};
+
 /**
  * goodix_i2c_read - read data from a register of the i2c slave device.
  *
@@ -739,6 +755,12 @@ static int goodix_configure_dev(struct g
 			"Applying '180 degrees rotated screen' quirk\n");
 	}
 
+	if (dmi_check_system(inverted_x_screen)) {
+		ts->prop.invert_x = true;
+		dev_dbg(&ts->client->dev,
+			"Applying 'inverted x screen' quirk\n");
+	}
+
 	error = input_mt_init_slots(ts->input_dev, ts->max_touch_num,
 				    INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED);
 	if (error) {