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authorAmaury Pouly <amaury.pouly@gmail.com>2012-05-19 16:09:46 +0200
committerAmaury Pouly <amaury.pouly@gmail.com>2012-05-19 16:10:52 +0200
commit12c64a4b79e043d8e8d77a278b340310f867a588 (patch)
treeb34b56131d6eb0e06340a8a6d7e32843027d0f59 /firmware/target/arm/imx233/creative-zenxfi2/backlight-zenxfi2.c
parente09c1e3d43665d04ae0ce2f288ba695b5abc3622 (diff)
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Initial commit for the Creative ZEN X-Fi2 and X-Fi3 ports
These are really similar devices so one commit for both is ok. Change-Id: I8bd1d3fef1eb6d00aaadfb7af56c771f62d0c9c3
Diffstat (limited to 'firmware/target/arm/imx233/creative-zenxfi2/backlight-zenxfi2.c')
-rw-r--r--firmware/target/arm/imx233/creative-zenxfi2/backlight-zenxfi2.c58
1 files changed, 58 insertions, 0 deletions
diff --git a/firmware/target/arm/imx233/creative-zenxfi2/backlight-zenxfi2.c b/firmware/target/arm/imx233/creative-zenxfi2/backlight-zenxfi2.c
new file mode 100644
index 0000000000..8fcdd8ba32
--- /dev/null
+++ b/firmware/target/arm/imx233/creative-zenxfi2/backlight-zenxfi2.c
@@ -0,0 +1,58 @@
+/***************************************************************************
+ * __________ __ ___.
+ * Open \______ \ ____ ____ | | _\_ |__ _______ ___
+ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
+ * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
+ * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
+ * \/ \/ \/ \/ \/
+ * $Id$
+ *
+ * Copyright (C) 2011 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"
+
+void _backlight_set_brightness(int brightness)
+{
+ imx233_pwm_setup_channel(4, 1024, HW_PWM_PERIODx__CDIV__DIV_1,
+ 0, HW_PWM_PERIODx__STATE__HIGH,
+ (brightness * 1024) / 100, HW_PWM_PERIODx__STATE__LOW);
+ imx233_pwm_enable_channel(4, true);
+}
+
+bool _backlight_init(void)
+{
+ _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
+}