backlight: Add support Skyworks SKY81452 backlight driver

Signed-off-by: Gyungoh Yoo <jack.yoo@skyworksinc.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Bryan Wu <cooloney@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

1 files changed, 46 insertions, 0 deletions

diff --git a/include/linux/platform_data/sky81452-backlight.h b/include/linux/platform_data/sky81452-backlight.h
new file mode 100644
index 000000000000..1231e9bb00f1
--- /dev/null
+++ b/include/linux/platform_data/sky81452-backlight.h
@@ -0,0 +1,46 @@
+/*
+ * sky81452.h   SKY81452 backlight driver
+ *
+ * Copyright 2014 Skyworks Solutions Inc.
+ * Author : Gyungoh Yoo <jack.yoo@skyworksinc.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _SKY81452_BACKLIGHT_H
+#define _SKY81452_BACKLIGHT_H
+
+/**
+ * struct sky81452_platform_data
+ * @name:       backlight driver name.
+                If it is not defined, default name is lcd-backlight.
+ * @gpio_enable:GPIO number which control EN pin
+ * @enable:     Enable mask for current sink channel 1, 2, 3, 4, 5 and 6.
+ * @ignore_pwm: true if DPWMI should be ignored.
+ * @dpwm_mode:  true is DPWM dimming mode, otherwise Analog dimming mode.
+ * @phase_shift:true is phase shift mode.
+ * @short_detecion_threshold:   It should be one of 4, 5, 6 and 7V.
+ * @boost_current_limit:        It should be one of 2300, 2750mA.
+ */
+struct sky81452_bl_platform_data {
+        const char *name;
+        int gpio_enable;
+        unsigned int enable;
+        bool ignore_pwm;
+        bool dpwm_mode;
+        bool phase_shift;
+        unsigned int short_detection_threshold;
+        unsigned int boost_current_limit;
+};
+
+#endif