1 files changed, 163 insertions, 0 deletions

diff --git a/firmware/target/mips/ingenic_jz47xx/onda_vx747/backlight-onda_vx7X7.c b/firmware/target/mips/ingenic_jz47xx/onda_vx747/backlight-onda_vx7X7.c
new file mode 100644
index 0000000000..eec48768b2
--- /dev/null
+++ b/firmware/target/mips/ingenic_jz47xx/onda_vx747/backlight-onda_vx7X7.c
@@ -0,0 +1,163 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   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"
+
+/* PWM_CHN7 == GPIO(32*3 + 31) */
+#define BACKLIGHT_GPIO  (32*3+31)
+#define BACKLIGHT_PWM   7
+
+#define SW_PWM 1
+
+#if SW_PWM
+
+static bool backlight_on;
+
+static void set_backlight(int val)
+{
+    (void)val;
+}
+
+bool _backlight_init(void)
+{
+    __gpio_as_output(BACKLIGHT_GPIO);
+    __gpio_set_pin(BACKLIGHT_GPIO);
+    
+    backlight_on = true;
+
+    return true;
+}
+
+bool backlight_enabled(void)
+{
+    return backlight_on;
+}
+
+void _backlight_on(void)
+{
+    __gpio_set_pin(BACKLIGHT_GPIO);
+    backlight_on = true;
+}
+
+void _backlight_off(void)
+{
+    __gpio_clear_pin(BACKLIGHT_GPIO);
+    backlight_on = false;
+}
+
+#else
+
+static int old_val;
+static void set_backlight(int val)
+{
+    if(val == old_val)
+        return;
+    
+    /* Taken from the OF */
+    int tmp;
+    tmp = (val/2 + __cpm_get_rtcclk()) / val;
+    if(tmp > 0xFFFF)
+        tmp = 0xFFFF;
+
+    __tcu_set_half_data(BACKLIGHT_PWM, (tmp * val * 1374389535) >> 5);
+    __tcu_set_full_data(BACKLIGHT_PWM, tmp);
+    
+    old_val = val;
+}
+
+static void set_backlight_on(void)
+{
+    if(old_val == MAX_BRIGHTNESS_SETTING)
+        return;
+    
+    __tcu_start_timer_clock(BACKLIGHT_PWM);
+    
+    set_backlight(MAX_BRIGHTNESS_SETTING);
+
+    __tcu_set_count(BACKLIGHT_PWM, 0);
+    __tcu_start_counter(BACKLIGHT_PWM);
+
+    __tcu_enable_pwm_output(BACKLIGHT_PWM);
+}
+
+static void set_backlight_off(void)
+{
+    __tcu_stop_counter(BACKLIGHT_PWM);
+    __tcu_disable_pwm_output(BACKLIGHT_PWM);
+    __tcu_stop_timer_clock(BACKLIGHT_PWM);
+    
+    old_val = -1;
+}
+
+bool _backlight_init(void)
+{
+    __gpio_as_pwm(BACKLIGHT_PWM);
+    __tcu_start_timer_clock(BACKLIGHT_PWM);
+
+    __tcu_stop_counter(BACKLIGHT_PWM);
+    __tcu_disable_pwm_output(BACKLIGHT_PWM);
+
+    __tcu_init_pwm_output_low(BACKLIGHT_PWM);
+    __tcu_select_rtcclk(BACKLIGHT_PWM);
+    __tcu_select_clk_div1(BACKLIGHT_PWM);
+
+    __tcu_mask_half_match_irq(BACKLIGHT_PWM);
+    __tcu_mask_full_match_irq(BACKLIGHT_PWM);
+    
+    old_val = -1;
+
+    set_backlight_on();
+
+    return true;
+}
+
+bool backlight_enabled(void)
+{
+    return old_val > -1 ? true : false;
+}
+
+void _backlight_on(void)
+{
+    set_backlight_on();
+}
+
+void _backlight_off(void)
+{
+    set_backlight_off();
+}
+#endif /* !SW_PWM */
+
+#ifdef HAVE_BACKLIGHT_BRIGHTNESS
+void _backlight_set_brightness(int brightness)
+{
+    set_backlight(brightness);
+}
+#endif
+
+#ifdef HAVE_LCD_SLEEP
+/* Turn off LED supply */
+void _backlight_lcd_sleep(void)
+{
+    set_backlight_off();
+}
+#endif