From 2a6c3115f4142e23ca10c984d7f65ac8fb901cc2 Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
Date: Wed, 8 Nov 2023 15:50:39 +0000
Subject: [PATCH] input: edt-ft5x06: Include I2C details in names for the
 devices

libinput uses the input device name alone. If you have two
identical input devices, then there is no way to differentiate
between them, and in the case of touchscreens that means no
way to associate them with the appropriate display device.

Add the I2C bus and address to the start of the input device
name so that the name is always unique within the system.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
---
 drivers/input/touchscreen/edt-ft5x06.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

--- a/drivers/input/touchscreen/edt-ft5x06.c
+++ b/drivers/input/touchscreen/edt-ft5x06.c
@@ -67,6 +67,7 @@
 #define TOUCH_EVENT_RESERVED		0x03
 
 #define EDT_NAME_LEN			23
+#define EDT_NAME_PREFIX_LEN		8
 #define EDT_SWITCH_MODE_RETRIES		10
 #define EDT_SWITCH_MODE_DELAY		5 /* msec */
 #define EDT_RAW_DATA_RETRIES		100
@@ -134,7 +135,7 @@ struct edt_ft5x06_ts_data {
 	int max_support_points;
 	unsigned int known_ids;
 
-	char name[EDT_NAME_LEN];
+	char name[EDT_NAME_PREFIX_LEN + EDT_NAME_LEN];
 	char fw_version[EDT_NAME_LEN];
 	int init_td_status;
 
@@ -965,6 +966,9 @@ static int edt_ft5x06_ts_identify(struct
 	char *model_name = tsdata->name;
 	char *fw_version = tsdata->fw_version;
 
+	snprintf(model_name, EDT_NAME_PREFIX_LEN, "%s ", dev_name(&client->dev));
+	model_name += strlen(model_name);
+
 	/* see what we find if we assume it is a M06 *
 	 * if we get less than EDT_NAME_LEN, we don't want
 	 * to have garbage in there
