Add preliminary support for the Onda VX747 (MIPS target)

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18032 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 80 insertions, 0 deletions

diff --git a/firmware/target/mips/ingenic_jz47xx/onda_vx747/backlight-onda_vx747.c b/firmware/target/mips/ingenic_jz47xx/onda_vx747/backlight-onda_vx747.c
new file mode 100755
index 0000000000..9deab7712a
--- /dev/null
+++ b/firmware/target/mips/ingenic_jz47xx/onda_vx747/backlight-onda_vx747.c
@@ -0,0 +1,80 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2008 by Maurus Cuelenaere
+ *
+ * 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 "jz4740.h"
+#include "backlight-target.h"
+
+#define GPIO_PWM    123
+#define PWM_CHN     7
+#define PWM_FULL    101
+
+static void set_backlight(int unk, int val)
+{
+    if(val == 0)
+        __gpio_as_pwm7();
+    else
+    {
+        REG_TCU_TCSR(7) |= 2;
+        REG_TCU_TCSR(7) &= ~0x100;
+        int tmp;
+        tmp = (unk/2 + __cpm_get_rtcclk()) / unk;
+        if(tmp > 0xFFFF)
+            tmp = 0xFFFF;
+        
+        __tcu_set_half_data(7, (tmp * unk * 1374389535) >> 5);
+        __tcu_set_full_data(7, tmp);
+        
+        REG_TCU_TSCR = (1 << 7);
+        REG_TCU_TESR = (1 << 7);
+
+        __tcu_enable_pwm_output(7);
+    }
+    __tcu_set_count(7, 0);
+}
+
+bool _backlight_init(void)
+{
+    __gpio_as_pwm7();
+    
+    __tcu_stop_counter(7);
+    __tcu_disable_pwm_output(7);
+    
+    set_backlight(300, 7);
+    
+    return true;
+}
+void _backlight_on(void)
+{
+    set_backlight(300, 7);
+}
+void _backlight_off(void)
+{
+    set_backlight(300, 0);
+}
+
+#ifdef HAVE_BACKLIGHT_BRIGHTNESS
+void _backlight_set_brightness(int brightness)
+{
+    (void)brightness;
+    return;
+}
+#endif