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Diffstat (limited to 'firmware/target/arm/as3525/sansa-clip/backlight-clip.c')
-rw-r--r--firmware/target/arm/as3525/sansa-clip/backlight-clip.c58
1 files changed, 58 insertions, 0 deletions
diff --git a/firmware/target/arm/as3525/sansa-clip/backlight-clip.c b/firmware/target/arm/as3525/sansa-clip/backlight-clip.c
new file mode 100644
index 0000000000..2064f0992f
--- /dev/null
+++ b/firmware/target/arm/as3525/sansa-clip/backlight-clip.c
@@ -0,0 +1,58 @@
+/***************************************************************************
+ * __________ __ ___.
+ * Open \______ \ ____ ____ | | _\_ |__ _______ ___
+ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
+ * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
+ * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
+ * \/ \/ \/ \/ \/
+ * $Id$
+ *
+ * Copyright © 2008 Rafaël Carré
+ *
+ * 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 "backlight-target.h"
+#include "as3525.h"
+
+/* TODO : backlight brightness */
+
+/* XXX : xpd is used for SD/MCI interface
+ * If interrupts are used to access this interface, they should be
+ * disabled in _buttonlight_on/off ()
+ */
+
+void _buttonlight_on(void)
+{
+ int saved_ccu_io;
+
+ saved_ccu_io = CCU_IO; /* save XPD setting */
+
+ CCU_IO &= ~(3<<2); /* setup xpd as GPIO */
+
+ GPIOD_DIR |= (1<<7);
+ GPIOD_PIN(7) = (1<<7); /* set pin d7 high */
+
+ CCU_IO = saved_ccu_io; /* restore the previous XPD setting */
+}
+
+void _buttonlight_off(void)
+{
+ int saved_ccu_io;
+
+ saved_ccu_io = CCU_IO; /* save XPD setting */
+
+ CCU_IO &= ~(3<<2); /* setup xpd as GPIO */
+
+ GPIOD_DIR |= (1<<7);
+ GPIOD_PIN(7) = 0; /* set pin d7 low */
+
+ CCU_IO = saved_ccu_io; /* restore the previous XPD setting */
+}