From 93e3f24cf69bbe1b0253edc3f1ab081c64e52075 Mon Sep 17 00:00:00 2001
From: funman <funman@a1c6a512-1295-4272-9138-f99709370657>
Date: Tue, 13 Apr 2010 19:06:21 +0000
Subject: [PATCH] Fuzev2: simplify button_read_device()

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25636 a1c6a512-1295-4272-9138-f99709370657
---
 .../target/arm/as3525/sansa-fuzev2/button-fuzev2.c | 29 ++++++++--------------
 .../target/arm/as3525/sansa-fuzev2/lcd-fuzev2.c    |  3 +--
 2 files changed, 12 insertions(+), 20 deletions(-)

diff --git a/firmware/target/arm/as3525/sansa-fuzev2/button-fuzev2.c b/firmware/target/arm/as3525/sansa-fuzev2/button-fuzev2.c
index 4848d9e7d..3ae4975b2 100644
--- a/firmware/target/arm/as3525/sansa-fuzev2/button-fuzev2.c
+++ b/firmware/target/arm/as3525/sansa-fuzev2/button-fuzev2.c
@@ -32,9 +32,11 @@ static bool hold_button = false;
 void button_init_device(void)
 {   /* activate the wheel */
     volatile int i;
-    GPIOB_DIR |= 1<<4;
+    GPIOA_DIR &= ~(1<<6|1<<7);
+    GPIOC_DIR = 0;
+    GPIOB_DIR |= (1<<4)|(1<<3)|(1<<0);
     for(i = 20; i; i--) nop;
-    GPIOB_PIN(4) = 0x10;
+    GPIOB_PIN(4) = 1<<4;
 }
 
 unsigned read_GPIOA_67(void)
@@ -74,29 +76,23 @@ int button_read_device(void)
     volatile int delay;
     static bool hold_button_old = false;
     static long power_counter = 0;
-    unsigned gpiod = GPIOD_DATA;
-    unsigned gpioa_dir = GPIOA_DIR;
     unsigned gpiod6;
+
     get_scrollwheel();
-    for(delay = 500; delay; delay--) nop;
+
     CCU_IO &= ~(1<<12);
     for(delay=8;delay;delay--) nop;
-    GPIOB_DIR |= 1<<3;
+
     GPIOB_PIN(3) = 1<<3;
-    GPIOC_DIR = 0;
-    GPIOB_DIR &= ~(1<<1);
-    GPIOB_DIR |= 1<<0;
-    GPIOB_PIN(0) = 1;
+    GPIOB_PIN(0) = 1<<0;
+
     for(delay = 500; delay; delay--)
         nop;
     gpiod6 = GPIOD_PIN(6);
     GPIOB_PIN(0) = 0;
     for(delay = 240; delay; delay--)
         nop;
-    GPIOD_DIR = 0xff;
-    GPIOA_DIR &= ~(1<<6|1<<7);
-    GPIOD_DATA = 0;
-    GPIOD_DIR = 0;
+
     if (GPIOC_PIN(1) & 1<<1)
         btn |= BUTTON_DOWN;
     if (GPIOC_PIN(2) & 1<<2)
@@ -123,11 +119,8 @@ int button_read_device(void)
         }
     }
 
-    GPIOD_DIR = 0xff;
-    GPIOD_DATA = gpiod;
-    GPIOA_DIR = gpioa_dir;
-    GPIOD_DIR = 0;
     CCU_IO |= 1<<12;
+
 #ifdef HAS_BUTTON_HOLD
 #ifndef BOOTLOADER
     /* light handling */
diff --git a/firmware/target/arm/as3525/sansa-fuzev2/lcd-fuzev2.c b/firmware/target/arm/as3525/sansa-fuzev2/lcd-fuzev2.c
index f3fa8e320..9797815d2 100644
--- a/firmware/target/arm/as3525/sansa-fuzev2/lcd-fuzev2.c
+++ b/firmware/target/arm/as3525/sansa-fuzev2/lcd-fuzev2.c
@@ -221,9 +221,8 @@ void lcd_init_device(void)
     GPIOA_PIN(0) = 1;
     GPIOA_PIN(4) = 0;
 
-    GPIOB_DIR |= 0xf;
+    GPIOB_DIR |= (1<<0)|(1<<2)|(1<<3);
     GPIOB_PIN(0) = 1<<0;
-    GPIOB_PIN(1) = 1<<1;
     GPIOB_PIN(2) = 1<<2;
     GPIOB_PIN(3) = 1<<3;
 
-- 
2.11.4.GIT