The power-saving SLEEP patch by Simon Elén.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@3259 a1c6a512-1295-4272-9138-f99709370657

3 files changed, 11 insertions, 17 deletions

diff --git a/firmware/drivers/ata.c b/firmware/drivers/ata.c
index 79193d9800..e65200eea2 100644
--- a/firmware/drivers/ata.c
+++ b/firmware/drivers/ata.c
@@ -111,7 +111,8 @@ static int wait_for_bsy(void)
 {
     int timeout = current_tick + HZ*10;
     while (TIME_BEFORE(current_tick, timeout) && (ATA_ALT_STATUS & STATUS_BSY))
-        yield();
+        sleep_thread();
+    wake_up_thread();
 
     if (TIME_BEFORE(current_tick, timeout))
         return 1;
@@ -131,7 +132,8 @@ static int wait_for_rdy(void)
     
     while (TIME_BEFORE(current_tick, timeout) &&
            !(ATA_ALT_STATUS & STATUS_RDY))
-        yield();
+        sleep_thread();
+    wake_up_thread();
 
     if (TIME_BEFORE(current_tick, timeout))
         return STATUS_RDY;
diff --git a/firmware/drivers/button.c b/firmware/drivers/button.c
index 2c33440fef..69d041f65e 100644
--- a/firmware/drivers/button.c
+++ b/firmware/drivers/button.c
@@ -163,19 +163,8 @@ int button_get(bool block)
 int button_get_w_tmo(int ticks)
 {
     struct event ev;
-    unsigned int timeout = current_tick + ticks;
-
-    while (TIME_BEFORE( current_tick, timeout ))
-    {
-        if(!queue_empty(&button_queue))
-        {
-            queue_wait(&button_queue, &ev);
-            return ev.id;
-        }
-        yield();
-    }
-
-    return BUTTON_NONE;
+    queue_wait_w_tmo(&button_queue, &ev, ticks);
+    return (ev.id != SYS_TIMEOUT)? ev.id: BUTTON_NONE;
 }
 
 #ifdef HAVE_RECORDER_KEYPAD
diff --git a/firmware/drivers/i2c.c b/firmware/drivers/i2c.c
index 97d7a511e1..f0b5907be8 100644
--- a/firmware/drivers/i2c.c
+++ b/firmware/drivers/i2c.c
@@ -19,6 +19,7 @@
 #include "lcd.h"
 #include "sh7034.h"
 #include "kernel.h"
+#include "thread.h"
 #include "debug.h"
 
 #define PB13 0x2000
@@ -108,7 +109,8 @@ void i2c_ack(int bit)
     
     SCL_INPUT;   /* Set the clock to input */
     while(!SCL)  /* and wait for the MAS to release it */
-        yield();
+        sleep_thread();
+    wake_up_thread();
 
     DELAY;
     SCL_OUTPUT;
@@ -130,7 +132,8 @@ int i2c_getack(void)
     SDA_INPUT;   /* And set to input */
     SCL_INPUT;   /* Set the clock to input */
     while(!SCL)  /* and wait for the MAS to release it */
-        yield();
+        sleep_thread();
+    wake_up_thread();
     
     if (SDA)
         /* ack failed */