[Feature] add GA346 baseline version

Change-Id: Ic62933698569507dcf98240cdf5d9931ae34348f
diff --git a/src/kernel/linux/v4.19/arch/arm/mach-s3c64xx/backlight.h b/src/kernel/linux/v4.19/arch/arm/mach-s3c64xx/backlight.h
new file mode 100644
index 0000000..028663f
--- /dev/null
+++ b/src/kernel/linux/v4.19/arch/arm/mach-s3c64xx/backlight.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ *              http://www.samsung.com
+ */
+
+#ifndef __ASM_PLAT_BACKLIGHT_H
+#define __ASM_PLAT_BACKLIGHT_H __FILE__
+
+/* samsung_bl_gpio_info - GPIO info for PWM Backlight control
+ * @no:		GPIO number for PWM timer out
+ * @func:	Special function of GPIO line for PWM timer
+ */
+struct samsung_bl_gpio_info {
+	int no;
+	int func;
+};
+
+extern void __init samsung_bl_set(struct samsung_bl_gpio_info *gpio_info,
+	struct platform_pwm_backlight_data *bl_data);
+
+#endif /* __ASM_PLAT_BACKLIGHT_H */