From f34cd80f638a6ca3b336f6ebd14cd958974b2760 Mon Sep 17 00:00:00 2001
From: Mark Arigo <markarigo@gmail.com>
Date: Wed, 18 Feb 2009 02:19:22 +0000
Subject: Backlight brightness and button lights for the Philips HDD1630

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20035 a1c6a512-1295-4272-9138-f99709370657
---
 .../target/arm/philips/hdd1630/backlight-hdd1630.c | 59 ++++++++++++++++++++--
 1 file changed, 54 insertions(+), 5 deletions(-)

(limited to 'firmware/target/arm/philips/hdd1630/backlight-hdd1630.c')

diff --git a/firmware/target/arm/philips/hdd1630/backlight-hdd1630.c b/firmware/target/arm/philips/hdd1630/backlight-hdd1630.c
index eb2c2731ac..eafce13759 100755
--- a/firmware/target/arm/philips/hdd1630/backlight-hdd1630.c
+++ b/firmware/target/arm/philips/hdd1630/backlight-hdd1630.c
@@ -21,35 +21,84 @@
 #include "config.h"
 #include "backlight-target.h"
 #include "system.h"
-#include "lcd.h"
 #include "backlight.h"
+#include "synaptics-mep.h"
 
 #ifdef HAVE_BACKLIGHT_BRIGHTNESS
-static unsigned short backlight_brightness = DEFAULT_BRIGHTNESS_SETTING;
+static const int brightness_vals[16] =
+                {255,237,219,201,183,165,147,130,112,94,76,58,40,22,5,0};
 
 void _backlight_set_brightness(int brightness)
 {
+    outl(0x80000000 | (brightness_vals[brightness-1] << 16), 0x7000a000);
 }
 #endif
 
 void _backlight_on(void)
 {
-    GPO32_VAL &= ~0x1000000;
+    GPO32_VAL    &= ~0x1000000;
     GPO32_ENABLE &= ~0x1000000;
 }
 
 void _backlight_off(void)
 {
-    GPO32_VAL |= 0x1000000;
+    GPO32_VAL    |= 0x1000000;
     GPO32_ENABLE |= 0x1000000;
 }
 
 #ifdef HAVE_BUTTON_LIGHT
-void _buttonlight_on(void)
+
+#define BUTTONLIGHT_MASK 0x7f
+
+static unsigned short buttonight_brightness = DEFAULT_BRIGHTNESS_SETTING - 1;
+static unsigned short buttonlight_status = 0;
+
+static void set_buttonlight(int brightness)
 {
+    int data[6];
+
+    if (syn_get_status())
+    {
+        syn_int_enable(false);
+
+        /* turn on all touchpad leds */
+        data[0] = 0x05;
+        data[1] = 0x31;
+        data[2] = (brightness & 0xff) << 4;
+        data[3] = 0x00;
+        data[4] = 0x00;
+        data[5] = BUTTONLIGHT_MASK;
+        syn_send(data, 6);
+
+        /* device responds with a single-byte ACK packet */
+        syn_read(data, 2);
+
+        syn_int_enable(true);
+    }
 }
 
+void _buttonlight_on(void)
+{
+    if (!buttonlight_status)
+    {
+        set_buttonlight(buttonight_brightness);
+        buttonlight_status = 1;
+    }
+}
+ 
 void _buttonlight_off(void)
 {
+    if (buttonlight_status)
+    {
+        set_buttonlight(0);
+        buttonlight_status = 0;
+    }
+}
+
+void _buttonlight_set_brightness(int brightness)
+{
+    buttonight_brightness = brightness - 1;
+    set_buttonlight(buttonight_brightness);
+    buttonlight_status = 1;
 }
 #endif
-- 
cgit