From 30905c955f0a83d32365826bc73c04093f995525 Mon Sep 17 00:00:00 2001
From: funman <funman@a1c6a512-1295-4272-9138-f99709370657>
Date: Wed, 5 May 2010 04:13:15 +0000
Subject: [PATCH] Fuzev2: don't disable interrupts in fm code, allow button
 tick to run

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25819 a1c6a512-1295-4272-9138-f99709370657
---
 firmware/target/arm/as3525/fmradio-i2c-as3525.c         | 5 -----
 firmware/target/arm/as3525/sansa-fuzev2/button-fuzev2.c | 4 +++-
 2 files changed, 3 insertions(+), 6 deletions(-)

diff --git a/firmware/target/arm/as3525/fmradio-i2c-as3525.c b/firmware/target/arm/as3525/fmradio-i2c-as3525.c
index 31d701dc6..33d12f9fa 100644
--- a/firmware/target/arm/as3525/fmradio-i2c-as3525.c
+++ b/firmware/target/arm/as3525/fmradio-i2c-as3525.c
@@ -30,7 +30,6 @@
 #include "as3525.h"
 #include "generic_i2c.h"
 #include "fmradio_i2c.h"
-#include "system.h"
 
 #if     defined(SANSA_CLIP) || defined(SANSA_C200V2)
 #define I2C_SCL_GPIO(x) GPIOB_PIN(x)
@@ -168,13 +167,11 @@ void fmradio_i2c_init(void)
 int fmradio_i2c_write(unsigned char address, const unsigned char* buf, int count)
 {
 #ifdef SANSA_FUZEV2
-    int s = disable_irq_save();
     CCU_IO &= ~(1<<12);
 #endif
     int ret = i2c_write_data(fm_i2c_bus, address, -1, buf, count);
 #ifdef SANSA_FUZEV2
     CCU_IO |= 1<<12;
-    restore_irq(s);
 #endif
     return ret;
 }
@@ -182,13 +179,11 @@ int fmradio_i2c_write(unsigned char address, const unsigned char* buf, int count
 int fmradio_i2c_read(unsigned char address, unsigned char* buf, int count)
 {
 #ifdef SANSA_FUZEV2
-    int s = disable_irq_save();
     CCU_IO &= ~(1<<12);
 #endif
     int ret = i2c_read_data(fm_i2c_bus, address, -1, buf, count);
 #ifdef SANSA_FUZEV2
     CCU_IO |= 1<<12;
-    restore_irq(s);
 #endif
     return ret;
 }
diff --git a/firmware/target/arm/as3525/sansa-fuzev2/button-fuzev2.c b/firmware/target/arm/as3525/sansa-fuzev2/button-fuzev2.c
index fcda5226c..4486af95b 100644
--- a/firmware/target/arm/as3525/sansa-fuzev2/button-fuzev2.c
+++ b/firmware/target/arm/as3525/sansa-fuzev2/button-fuzev2.c
@@ -230,6 +230,7 @@ int button_read_device(void)
     int delay = 30;
     while(delay--) nop;
 
+    bool ccu_io_bit12 = CCU_IO & (1<<12);
     CCU_IO &= ~(1<<12);
 
     /* B1 is shared with FM i2c */
@@ -273,7 +274,8 @@ int button_read_device(void)
     if(gpiob_pin0_dir)
         GPIOB_DIR |= 1<<1;
 
-    CCU_IO |= 1<<12;
+    if(ccu_io_bit12)
+        CCU_IO |= 1<<12;
 
 #ifdef HAS_BUTTON_HOLD
 #ifndef BOOTLOADER
-- 
2.11.4.GIT