Sansa Connect: Fix GIO initialization and screen wakeup.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31119 a1c6a512-1295-4272-9138-f99709370657

4 files changed, 28 insertions, 25 deletions

diff --git a/firmware/target/arm/tms320dm320/sansa-connect/avr-sansaconnect.c b/firmware/target/arm/tms320dm320/sansa-connect/avr-sansaconnect.c
index 870aa52..036b7db 100644
--- a/firmware/target/arm/tms320dm320/sansa-connect/avr-sansaconnect.c
+++ b/firmware/target/arm/tms320dm320/sansa-connect/avr-sansaconnect.c
@@ -214,22 +214,6 @@ static void parse_button_state(unsigned char *buf)
 #endif
 }
 
-/* HID Slave Select - GIO14 */
-#define HID_SS (1<<14)
-
-static inline void select_hid(bool on)
-{
-    if (on == true)
-    {
-        /* SS is active low */
-        IO_GIO_BITCLR0 = HID_SS;
-    }
-    else
-    {
-        IO_GIO_BITSET0 = HID_SS;
-    }
-}
-
 static void spi_txrx(unsigned char *buf_tx, unsigned char *buf_rx, int n)
 {
     int i;
@@ -239,7 +223,6 @@ static void spi_txrx(unsigned char *buf_tx, unsigned char *buf_rx, int n)
 
     bitset16(&IO_CLK_MOD2, CLK_MOD2_SIF1);
     IO_SERIAL1_TX_ENABLE = 0x0001;
-    select_hid(true);
 
     for (i = 0; i<n; i++)
     {
@@ -254,10 +237,10 @@ static void spi_txrx(unsigned char *buf_tx, unsigned char *buf_rx, int n)
         if (buf_rx != NULL)
             buf_rx[i] = rxdata & 0xFF;
 
-        udelay(100);
+        /* seems to be unneccessary */
+        //udelay(100);
     }
 
-    select_hid(false);
     IO_SERIAL1_TX_ENABLE = 0;
     bitclr16(&IO_CLK_MOD2, CLK_MOD2_SIF1);
 
@@ -280,14 +263,16 @@ void avr_hid_init(void)
 {
     /*
        setup alternate GIO functions:
-       GIO29 - SIF1 Enable
+       GIO29 - SIF1 Enable (Directly connected to AVR's SS)
        GIO30 - SIF1 Clock
        GIO31 - SIF1 Data In
        GIO32 - SIF1 Data Out
     */
     IO_GIO_FSEL2 = (IO_GIO_FSEL2 & 0x00FF) | 0xAA00;
-
-    bitclr16(&IO_GIO_DIR0, HID_SS); /* set GIO14 as output */ 
+    /* GIO29, GIO30 - outputs, GIO31 - input */
+    IO_GIO_DIR1 = (IO_GIO_DIR1 & ~((1 << 13) | (1 << 14))) | (1 << 15);
+    /* GIO32 - output */
+    bitclr16(&IO_GIO_DIR2, (1 << 0));
 
     /* RATE = 219 (0xDB) -> 200 kHz */
     IO_SERIAL1_MODE = 0x6DB;
diff --git a/firmware/target/arm/tms320dm320/sansa-connect/backlight-sansaconnect.c b/firmware/target/arm/tms320dm320/sansa-connect/backlight-sansaconnect.c
index b798984..50301c0 100644
--- a/firmware/target/arm/tms320dm320/sansa-connect/backlight-sansaconnect.c
+++ b/firmware/target/arm/tms320dm320/sansa-connect/backlight-sansaconnect.c
@@ -53,6 +53,13 @@ static void _backlight_write_brightness(int brightness)
 
 void _backlight_on(void)
 {
+#ifdef HAVE_LCD_SLEEP
+    if (!lcd_active())
+    {
+        lcd_awake();
+        lcd_update();
+    }
+#endif
     /* set GIO34 as PWM1 */
     IO_GIO_FSEL3 = (IO_GIO_FSEL3 & 0xFFF3) | (1 << 2);
 
diff --git a/firmware/target/arm/tms320dm320/sansa-connect/usb-sansaconnect.c b/firmware/target/arm/tms320dm320/sansa-connect/usb-sansaconnect.c
index ab42beb..979b1b9 100644
--- a/firmware/target/arm/tms320dm320/sansa-connect/usb-sansaconnect.c
+++ b/firmware/target/arm/tms320dm320/sansa-connect/usb-sansaconnect.c
@@ -40,6 +40,14 @@ int usb_detect(void)
 
 void usb_init_device(void)
 {
+    /* set TNETV USB nreset high */
+    IO_GIO_DIR0 &= ~(1 << 7);
+    IO_GIO_BITSET0 = (1 << 7);
+
+    /* set VLYNQ port functions */
+    IO_GIO_FSEL1 = 0xAAAA;
+    IO_GIO_FSEL2 = (IO_GIO_FSEL2 & 0xFFF0) | 0xA;
+
     return;
 }
 
diff --git a/firmware/target/arm/tms320dm320/system-dm320.c b/firmware/target/arm/tms320dm320/system-dm320.c
index 029aecc..37d06f4 100644
--- a/firmware/target/arm/tms320dm320/system-dm320.c
+++ b/firmware/target/arm/tms320dm320/system-dm320.c
@@ -344,7 +344,10 @@ void system_init(void)
     IO_TIMER2_TMMD = CONFIG_TIMER2_TMMD_STOP;
     IO_TIMER3_TMMD = CONFIG_TIMER3_TMMD_STOP;
 
+#ifndef SANSA_CONNECT
+    /* UART1 is not used on Sansa Connect - don't power it up */
     uart_init();
+#endif
     spi_init();
 
 #ifdef MROBE_500
@@ -359,9 +362,9 @@ 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);
+    /* keep WIFI CS and reset high to save power */
+    IO_GIO_DIR0 &= ~((1 << 4) /* CS */ | (1 << 3) /* reset */);
+    IO_GIO_BITSET0 = (1 << 4) | (1 << 3);
 
     i2c_init();
     avr_hid_init();