From 201574d689b9144382bf9dfeb8fbce0565391e86 Mon Sep 17 00:00:00 2001
From: Szymon Dziok <b0hoon@o2.pl>
Date: Sun, 11 Sep 2011 12:21:01 +0000
Subject: HDD6330: Fix random issues with the button light (MENU button
 sometimes does not light up).

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30505 a1c6a512-1295-4272-9138-f99709370657
---
 firmware/drivers/synaptics-mep.c                        | 13 +++++++++++--
 firmware/target/arm/philips/hdd6330/backlight-hdd6330.c | 12 ++++++------
 2 files changed, 17 insertions(+), 8 deletions(-)

diff --git a/firmware/drivers/synaptics-mep.c b/firmware/drivers/synaptics-mep.c
index 98c8829ead..48139534f2 100644
--- a/firmware/drivers/synaptics-mep.c
+++ b/firmware/drivers/synaptics-mep.c
@@ -590,7 +590,7 @@ int touchpad_read_device(char *data, int len)
 int touchpad_set_parameter(char mod_nr, char par_nr, unsigned int param)
 {
     char data[4];
-    int val=0;
+    int i, val=0;
 
     if (syn_status)
     {
@@ -601,7 +601,16 @@ int touchpad_set_parameter(char mod_nr, char par_nr, unsigned int param)
         data[2]=(param >> 8) & 0xff; /* param_hi */
         data[3]=param & 0xff;        /* param_lo */
         syn_send(data,4);
-        val=syn_read(data,1); /* get the simple ACK = 0x18 */
+        val=syn_read(data,4); /* try to get the simple ACK = 0x18 */
+
+        /* modules > 0 sometimes don't give ACK immediately but other packets like */
+        /* absolute from the scroll strip, so it has to be ignored until we receive ACK */
+        if ((mod_nr > 0) && ((data[0] & 7) != 0))
+        for (i = 0; i < 2; i++)
+        {
+            val=syn_read(data,4);
+            if (data[0] == 0x18) break;
+        }
 
         syn_enable_int(true);
     }
diff --git a/firmware/target/arm/philips/hdd6330/backlight-hdd6330.c b/firmware/target/arm/philips/hdd6330/backlight-hdd6330.c
index 369f3a40f1..ec77e9c828 100644
--- a/firmware/target/arm/philips/hdd6330/backlight-hdd6330.c
+++ b/firmware/target/arm/philips/hdd6330/backlight-hdd6330.c
@@ -55,26 +55,26 @@ void _buttonlight_on(void)
 {
     if (!buttonlight_status)
     {
+        /* enable 1 led (from 2) for MENU - GPO, module 1 */
+        /* no need to enable led for the hidden button */
+        touchpad_set_parameter(0x01,0x21,0x01);
         /* enable 3 leds (from 5) for PREV, PLAY and NEXT, */
         /* skip 2 leds because their light does not pass */
         /* through the panel anyway - on GPOs, module 0 */
         touchpad_set_parameter(0x00,0x22,0x15);
-        /* enable 1 led (from 2) for MENU - GPO, module 1 */
-        /* no need to enable led for the hidden button */
-        touchpad_set_parameter(0x01,0x21,0x01);
         /* left, right and the scrollstrip */
         touchpad_set_buttonlights(BUTTONLIGHT_MASK, buttonight_brightness);
         buttonlight_status = 1;
     }
 }
- 
+
 void _buttonlight_off(void)
 {
     if (buttonlight_status)
     {
         /* disable all leds on GPOs for module 0 and 1 */
-        touchpad_set_parameter(0x00,0x22,0x00);
         touchpad_set_parameter(0x01,0x21,0x00);
+        touchpad_set_parameter(0x00,0x22,0x00);
         touchpad_set_buttonlights(BUTTONLIGHT_MASK, 0);
         buttonlight_status = 0;
     }
@@ -82,8 +82,8 @@ void _buttonlight_off(void)
 
 void _buttonlight_set_brightness(int brightness)
 {
-    touchpad_set_parameter(0x00,0x22,0x15);
     touchpad_set_parameter(0x01,0x21,0x01);
+    touchpad_set_parameter(0x00,0x22,0x15);
     buttonight_brightness = brightness - 1;
     touchpad_set_buttonlights(BUTTONLIGHT_MASK, buttonight_brightness);
     buttonlight_status = 1;
-- 
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