From 4b881a0efd67deaff3ee59011e699677ba2b638b Mon Sep 17 00:00:00 2001
From: litong <litong20@lenovo.com>
Date: Fri, 21 Aug 2020 19:25:26 +0800
Subject: [PATCH] Determine whether to load by "mmi,panel_name"

Because there is no contains function on kernel 5.4, and we have no way
to modify the kernel code. So "mmi,panel_name" is used to determine
whether to probe this driver.

Change-Id: I956b6ce1d463cbe472b80599c954dd06bd633082
Reviewed-on: https://gerrit.mot.com/1728590
SLTApproved: Slta Waiver
SME-Granted: SME Approvals Granted
Tested-by: Jira Key
Reviewed-by: Konstantin Makariev <kmakariev@motorola.com>
Submit-Approved: Jira Key
---
 drivers/input/touchscreen/sec_mmi/sec_ts.c    |  5 ++++
 .../touchscreen_mmi/touchscreen_mmi_class.c   | 24 +++++++++++++++++++
 include/linux/touchscreen_mmi.h               |  1 +
 3 files changed, 30 insertions(+)

diff --git a/drivers/input/touchscreen/sec_mmi/sec_ts.c b/drivers/input/touchscreen/sec_mmi/sec_ts.c
index 75d03e157a4b..fb0393bacf4b 100644
--- a/drivers/input/touchscreen/sec_mmi/sec_ts.c
+++ b/drivers/input/touchscreen/sec_mmi/sec_ts.c
@@ -2671,6 +2671,11 @@ static int __init sec_ts_init(void)
 		return -ENODEV;
 	}
 #endif
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5, 4, 0))
+	if (!ts_mmi_is_panel_match("mmi,panel_name", "lsi"))
+		return false;
+#endif
 	pr_err("%s\n", __func__);
 
 	return i2c_add_driver(&sec_ts_driver);
diff --git a/drivers/input/touchscreen/touchscreen_mmi/touchscreen_mmi_class.c b/drivers/input/touchscreen/touchscreen_mmi/touchscreen_mmi_class.c
index f9d94fb4a417..0ee075a3cfea 100644
--- a/drivers/input/touchscreen/touchscreen_mmi/touchscreen_mmi_class.c
+++ b/drivers/input/touchscreen/touchscreen_mmi/touchscreen_mmi_class.c
@@ -787,6 +787,30 @@ void ts_mmi_dev_unregister(struct device *parent)
 }
 EXPORT_SYMBOL(ts_mmi_dev_unregister);
 
+bool ts_mmi_is_panel_match(const char *panel_node, char *touch_ic_name)
+{
+	struct device_node *of_chosen;
+	const char *panel_name;
+
+	of_chosen = of_find_node_by_path("/chosen");
+	if (of_chosen == NULL)
+		of_chosen = of_find_node_by_path("/chosen@0");
+
+	if (of_chosen == NULL)
+		return false;
+
+	if (of_property_read_string(of_chosen, panel_node, &panel_name)) {
+		pr_err("%s: Failed to get %s", __func__, panel_node);
+		return false;
+	}
+
+	if (strstr(panel_name, touch_ic_name))
+			return true;
+
+	return false;
+}
+EXPORT_SYMBOL(ts_mmi_is_panel_match);
+
 static int __init touchscreens_init(void)
 {
 	int error = 0;
diff --git a/include/linux/touchscreen_mmi.h b/include/linux/touchscreen_mmi.h
index 81de35269ef7..e016376c597f 100644
--- a/include/linux/touchscreen_mmi.h
+++ b/include/linux/touchscreen_mmi.h
@@ -468,6 +468,7 @@ extern int ts_mmi_gesture_suspend(struct ts_mmi_dev *touch_cdev);
 #ifdef CONFIG_DRM_PANEL_NOTIFICATIONS
 int ts_mmi_check_drm_panel(struct device_node *of_node);
 #endif
+extern bool ts_mmi_is_panel_match(const char *panel_node, char *touch_ic_name);
 
 /*sensor*/
 extern bool ts_mmi_is_sensor_enable(void);