From 9b4c9f024aef4d59e18def8de354e5698946613a Mon Sep 17 00:00:00 2001
From: wangyq13 <wangyq13@lenovo.com>
Date: Mon, 7 Nov 2022 15:06:26 +0800
Subject: [PATCH] input: nova_0flash_mmi: check whether panel exists

nova_0flash_mmi:
Check whether panel exists before probe:
- reduce boot on time
- don't set touch pin state, avoid impact other touch panel

Change-Id: I63f35d5af852477e9571680834087449601c2677
Signed-off-by: wangyq13 <wangyq13@lenovo.com>
Reviewed-on: https://gerrit.mot.com/2422379
SME-Granted: SME Approvals Granted
SLTApproved: Slta Waiver
Tested-by: Jira Key
Reviewed-by: Wei Deng <dengwei1@motorola.com>
Reviewed-by: Jing Hu <hujing3@lenovo.com>
Reviewed-by: Jun Weng <wengjun1@motorola.com>
Reviewed-by: Huosheng Liao <liaohs@motorola.com>
Submit-Approved: Jira Key
---
 drivers/input/touchscreen/nova_0flash_mmi/nt36xxx.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/input/touchscreen/nova_0flash_mmi/nt36xxx.c b/drivers/input/touchscreen/nova_0flash_mmi/nt36xxx.c
index 2cef370d97f7..7227f45c179d 100644
--- a/drivers/input/touchscreen/nova_0flash_mmi/nt36xxx.c
+++ b/drivers/input/touchscreen/nova_0flash_mmi/nt36xxx.c
@@ -70,6 +70,7 @@ enum touch_state {
 #endif
 
 #ifdef CONFIG_INPUT_TOUCHSCREEN_MMI
+#include <linux/mmi_device.h>
 extern int nvt_mmi_init(struct nvt_ts_data *ts_data, bool enable);
 #endif
 
@@ -2767,6 +2768,11 @@ static int32_t nvt_ts_probe(struct spi_device *client)
 		return ret;
 	}
 #endif
+#else
+	if (client->dev.of_node && !mmi_device_is_available(client->dev.of_node)) {
+		NVT_ERR("mmi: device not supported\n");
+		return -ENODEV;
+	}
 #endif
 
 	NVT_LOG("start\n");