dm320: call storage idle notifys on in sdmmc thread

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31086 a1c6a512-1295-4272-9138-f99709370657

firmware/target/arm/tms320dm320/sansa-connect/powermgmt-sansaconnect.c

@@ -28,11 +28,13 @@
 
 static unsigned int current_battery_level = 100;
 
+/* This specifies the battery level that writes are still safe */
 const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] =
 {
-    0
+    1
 };
 
+/* Below this the player cannot be considered to operate reliably */
 const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] =
 {
     0

firmware/target/arm/tms320dm320/sdmmc-dm320.c

@@ -27,6 +27,7 @@
 #include "panic.h"
 #include "kernel.h"
 #include "dma-target.h"
+#include "ata_idle_notify.h"
 
 //#define SD_DEBUG
 
@@ -576,8 +577,8 @@ static void sd_thread(void) NORETURN_ATTR;
 static void sd_thread(void)
 {
     struct queue_event ev;
+    bool idle_notified = false;
 
-    /* TODO */
     while (1)
     {
         queue_wait_w_tmo(&sd_queue, &ev, HZ);
@@ -627,6 +628,17 @@ static void sd_thread(void)
         }
             break;
 #endif
+        case SYS_TIMEOUT:
+            if (TIME_BEFORE(current_tick, last_disk_activity+(3*HZ)))
+            {
+                idle_notified = false;
+            }
+            else if (!idle_notified)
+            {
+                call_storage_idle_notifys(false);
+                idle_notified = true;
+            }
+            break;
         }        
     }
 }

firmware/target/arm/tms320dm320/system-dm320.c

@@ -359,6 +359,10 @@ void system_init(void)
 #endif
 
 #ifdef SANSA_CONNECT
+    /* keep WIFI CS low to save power */
+    IO_GIO_DIR0 &= ~(1 << 4);
+    IO_GIO_BITCLR0 = (1 << 4);
+
     i2c_init();
     avr_hid_init();
     avr_hid_enable_charger();