Sansa Connect: Working USB Mass Storage

Acknowledge SYS_USB_CONNECTED in all queues so USB task can gain
exclusive access to the storage.

Reduce CPPI requeue timeout to speed up disk access.

Change-Id: I322aae4cac679696bb8186ccacf838a18f0715e9

3 files changed, 9 insertions, 17 deletions

diff --git a/firmware/target/arm/tms320dm320/sansa-connect/avr-sansaconnect.c b/firmware/target/arm/tms320dm320/sansa-connect/avr-sansaconnect.c
index 611bdbfde5..1af9789174 100644
--- a/firmware/target/arm/tms320dm320/sansa-connect/avr-sansaconnect.c
+++ b/firmware/target/arm/tms320dm320/sansa-connect/avr-sansaconnect.c
@@ -374,7 +374,13 @@ void btn_thread(void)
     while (1)
     {
         queue_wait(&btn_queue, &ev);
-        
+
+        if (ev.id == SYS_USB_CONNECTED)
+        {
+            /* Allow USB to gain exclusive storage access */
+            usb_acknowledge(SYS_USB_CONNECTED_ACK);
+        }
+
         /* Ignore all messages except BTN_INTERRUPT */
         if (ev.id != BTN_INTERRUPT)
             continue;
diff --git a/firmware/target/arm/tms320dm320/sansa-connect/tnetv105_usb_drv.c b/firmware/target/arm/tms320dm320/sansa-connect/tnetv105_usb_drv.c
index 56251a96db..00c9c2b80d 100644
--- a/firmware/target/arm/tms320dm320/sansa-connect/tnetv105_usb_drv.c
+++ b/firmware/target/arm/tms320dm320/sansa-connect/tnetv105_usb_drv.c
@@ -1034,7 +1034,7 @@ static int cppi_timeout_cb(struct timeout *tmo)
     int flags = disable_irq_save();
     bool requeue = tnetv_handle_cppi();
     restore_irq(flags);
-    return requeue ? HZ/10 : 0;
+    return requeue ? 1 : 0;
 }
 
 void VLYNQ(void) __attribute__ ((section(".icode")));
@@ -1205,7 +1205,7 @@ void VLYNQ(void)
 
         if (tnetv_handle_cppi())
         {
-            timeout_register(&cppi_timeout, cppi_timeout_cb, HZ/10, 0);
+            timeout_register(&cppi_timeout, cppi_timeout_cb, 1, 0);
         }
     }
 }
diff --git a/firmware/target/arm/tms320dm320/sdmmc-dm320.c b/firmware/target/arm/tms320dm320/sdmmc-dm320.c
index fdc3e041a0..cc5c4a822e 100644
--- a/firmware/target/arm/tms320dm320/sdmmc-dm320.c
+++ b/firmware/target/arm/tms320dm320/sdmmc-dm320.c
@@ -781,20 +781,10 @@ int sd_read_sectors(IF_MD(int card_no,) unsigned long start, int incount,
 int sd_write_sectors(IF_MD(int card_no,) unsigned long start, int count,
                       const void* outbuf)
 {
-#ifndef BOOTLOADER
 #ifndef HAVE_MULTIDRIVE
     const int card_no = 0;
 #endif
     return sd_transfer_sectors(card_no, start, count, (void*)outbuf, true);
-#else /* we don't need write support in bootloader */
-#ifdef HAVE_MULTIDRIVE
-    (void)card_no;
-#endif
-    (void)start;
-    (void)count;
-    (void)outbuf;
-    return 0;
-#endif
 }
 
 int sd_init(void)
@@ -809,9 +799,7 @@ int sd_init(void)
 
     mutex_lock(&sd_mtx);
 
-#ifndef BOOTLOADER
     enable_controller(false);
-#endif
 
     /* based on linux/drivers/mmc/dm320mmc.c
        Copyright (C) 2006 ZSI, All Rights Reserved.
@@ -859,8 +847,6 @@ int sd_init(void)
 #endif
 #endif
 
-    sd_select_device(1);
-
     /* Disable Memory Card CLK - it is enabled on demand by TMS320DM320 */
     bitclr16(&IO_MMC_MEM_CLK_CONTROL, (1 << 8));
     mutex_unlock(&sd_mtx);