1 files changed, 61 insertions, 0 deletions

diff --git a/firmware/target/arm/imx233/sony-nwz/backlight-nwz.c b/firmware/target/arm/imx233/sony-nwz/backlight-nwz.c
new file mode 100644
index 0000000000..ad3ef484db
--- /dev/null
+++ b/firmware/target/arm/imx233/sony-nwz/backlight-nwz.c
@@ -0,0 +1,61 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2013 by Amaury Pouly
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include "config.h"
+#include "system.h"
+#include "lcd.h"
+#include "backlight.h"
+#include "backlight-target.h"
+#include "pwm-imx233.h"
+#include "pinctrl-imx233.h"
+
+void _backlight_set_brightness(int brightness)
+{
+    imx233_pwm_setup_simple(2, 24000, 100 - brightness);
+    imx233_pwm_enable(2, true);
+}
+
+bool _backlight_init(void)
+{
+    imx233_pinctrl_acquire(0, 10, "backlight_enable");
+    imx233_pinctrl_set_function(0, 10, PINCTRL_FUNCTION_GPIO);
+    imx233_pinctrl_enable_gpio(0, 10, true);
+    imx233_pinctrl_set_gpio(0, 10, true);
+    _backlight_set_brightness(DEFAULT_BRIGHTNESS_SETTING);
+    return true;
+}
+
+void _backlight_on(void)
+{
+#ifdef HAVE_LCD_ENABLE
+    lcd_enable(true); /* power on lcd + visible display */
+#endif
+    /* don't do anything special, the core will set the brightness */
+}
+
+void _backlight_off(void)
+{
+    /* there is no real on/off but we can set to 0 brightness */
+    _backlight_set_brightness(0);
+#ifdef HAVE_LCD_ENABLE
+    lcd_enable(false); /* power off visible display */
+#endif
+}