diff --git a/drivers/input/touchscreen/focaltech_v2_mmi/Android.mk b/drivers/input/touchscreen/focaltech_v2_mmi/Android.mk
index b391381bdfcd..381ec41bad6d 100644
--- a/drivers/input/touchscreen/focaltech_v2_mmi/Android.mk
+++ b/drivers/input/touchscreen/focaltech_v2_mmi/Android.mk
@@ -1,6 +1,12 @@
 DLKM_DIR := motorola/kernel/modules
 LOCAL_PATH := $(call my-dir)
 
+ifneq ($(FOCALTECH_TOUCH_IC_NAME),)
+	KERNEL_CFLAGS += CONFIG_INPUT_FOCALTECH_0FLASH_MMI_IC_NAME=$(FOCALTECH_TOUCH_IC_NAME)
+else
+	KERNEL_CFLAGS += CONFIG_INPUT_FOCALTECH_0FLASH_MMI_IC_NAME=ft3518u
+endif
+
 ifneq ($(BOARD_USES_DOUBLE_TAP),)
 	KERNEL_CFLAGS += CONFIG_INPUT_FOCALTECH_MMI_ENABLE_DOUBLE_TAP=y
 endif
diff --git a/drivers/input/touchscreen/focaltech_v2_mmi/Kbuild b/drivers/input/touchscreen/focaltech_v2_mmi/Kbuild
index d01bb272f18e..8ebc2dd7d247 100644
--- a/drivers/input/touchscreen/focaltech_v2_mmi/Kbuild
+++ b/drivers/input/touchscreen/focaltech_v2_mmi/Kbuild
@@ -1,9 +1,9 @@
 # add -Wall to try to catch everything we can.
 EXTRA_CFLAGS += -Wall
-EXTRA_CFLAGS += -I$(TOP)/motorola/kernel/modules/include \
-		-I$(TOP)/motorola/kernel/modules/drivers/input/touchscreen/focaltech_v2_mmi \
-		-I$(TOP)/motorola/kernel/modules/drivers/input/touchscreen/focaltech_v2_mmi/include \
-		-I$(TOP)/motorola/kernel/modules/drivers/input/touchscreen/focaltech_v2_mmi/focaltech_test
+EXTRA_CFLAGS += -I$(ANDROID_BUILD_TOP)/motorola/kernel/modules/include \
+		-I$(ANDROID_BUILD_TOP)/motorola/kernel/modules/drivers/input/touchscreen/focaltech_v2_mmi \
+		-I$(ANDROID_BUILD_TOP)/motorola/kernel/modules/drivers/input/touchscreen/focaltech_v2_mmi/include \
+		-I$(ANDROID_BUILD_TOP)/motorola/kernel/modules/drivers/input/touchscreen/focaltech_v2_mmi/focaltech_test
 
 obj-m := focaltech_v2_mmi.o
 focaltech_v2_mmi-objs += focaltech_core.o
@@ -16,6 +16,10 @@ focaltech_v2_mmi-objs += focaltech_flash.o
 focaltech_v2_mmi-objs += focaltech_flash/focaltech_upgrade_ft3518u.o
 focaltech_v2_mmi-objs += focaltech_i2c.o
 
+ifneq ($(filter ft3519,$(CONFIG_INPUT_FOCALTECH_0FLASH_MMI_IC_NAME)),)
+	EXTRA_CFLAGS += -DCONFIG_INPUT_FOCALTECH_0FLASH_MMI_IC_NAME_FT3519
+endif
+
 ifneq ($(filter m y,$(CONFIG_INPUT_TOUCHSCREEN_MMI)),)
        EXTRA_CFLAGS += -DCONFIG_INPUT_TOUCHSCREEN_MMI
        focaltech_v2_mmi-objs += focaltech_ts_mmi.o
diff --git a/drivers/input/touchscreen/focaltech_v2_mmi/focaltech_common.h b/drivers/input/touchscreen/focaltech_v2_mmi/focaltech_common.h
index 1bc9fa4abef0..a76622752af4 100644
--- a/drivers/input/touchscreen/focaltech_v2_mmi/focaltech_common.h
+++ b/drivers/input/touchscreen/focaltech_v2_mmi/focaltech_common.h
@@ -54,7 +54,11 @@
 #define FTS_CHIP_IDC            ((FTS_CHIP_TYPE & FLAGBIT(FLAG_IDC_BIT)) == FLAGBIT(FLAG_IDC_BIT))
 #define FTS_HID_SUPPORTTED      ((FTS_CHIP_TYPE & FLAGBIT(FLAG_HID_BIT)) == FLAGBIT(FLAG_HID_BIT))
 
+#if defined(CONFIG_INPUT_FOCALTECH_0FLASH_MMI_IC_NAME_FT3519)
+#define FTS_CHIP_TYPE_MAPPING {{0x89, 0x54, 0x52, 0x54, 0x52, 0x00, 0x00, 0x54, 0x5E}}
+#else
 #define FTS_CHIP_TYPE_MAPPING {{0x81, 0x54, 0x52, 0x54, 0x52, 0x00, 0x00, 0x54, 0x5C}}
+#endif
 
 #define FILE_NAME_LENGTH                    128
 #define ENABLE                              1
diff --git a/drivers/input/touchscreen/focaltech_v2_mmi/focaltech_config.h b/drivers/input/touchscreen/focaltech_v2_mmi/focaltech_config.h
index cef285034d1d..22431acca2ae 100644
--- a/drivers/input/touchscreen/focaltech_v2_mmi/focaltech_config.h
+++ b/drivers/input/touchscreen/focaltech_v2_mmi/focaltech_config.h
@@ -117,6 +117,8 @@
 #define _FT5536L            0x5536E481
 #define _FT3418             0x34180481
 
+#define _FT3519             0x35190489
+
 #define _FT5446U            0x5446D083
 #define _FT5456U            0x5456D083
 #define _FT3417U            0x3417D083
@@ -161,8 +163,13 @@
 /*
  * choose your ic chip type of focaltech
  */
+ #if defined(CONFIG_INPUT_FOCALTECH_0FLASH_MMI_IC_NAME_FT3519)
+#define FTS_CHIP_TYPE   _FT3519
+#define FTS_CHIP_NAME   "ft3519"
+#else
 #define FTS_CHIP_TYPE   _FT3518U
 #define FTS_CHIP_NAME   "ft3518u"
+#endif
 
 /******************* Enables *********************/
 /*********** 1 to enable, 0 to disable ***********/
diff --git a/drivers/input/touchscreen/focaltech_v2_mmi/focaltech_flash.c b/drivers/input/touchscreen/focaltech_v2_mmi/focaltech_flash.c
index 77602efb782d..1050374e25a0 100644
--- a/drivers/input/touchscreen/focaltech_v2_mmi/focaltech_flash.c
+++ b/drivers/input/touchscreen/focaltech_v2_mmi/focaltech_flash.c
@@ -1167,7 +1167,9 @@ static int fts_read_file(char *file_name, u8 **file_buf)
     old_fs = get_fs();
     set_fs(KERNEL_DS);
     pos = 0;
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(5, 4, 0))
     ret = vfs_read(filp, *file_buf, file_len , &pos);
+#endif
     if (ret < 0)
         FTS_ERROR("read file fail");
     FTS_INFO("file len:%d read len:%d pos:%d", (u32)file_len, ret, (u32)pos);