Support new Fuzev2 revisions (fuzev2_variant == 1)

- Revert BUTTON_HOME
- Modifications to SD driver (µSD not working yet)

TODO: µSD and FM radio

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27492 a1c6a512-1295-4272-9138-f99709370657

firmware/target/arm/as3525/debug-as3525.c

@@ -268,11 +268,15 @@ bool __dbg_hw_info(void)
     {
         while(1)
         {
-#ifdef SANSA_C200V2
+#if defined(SANSA_C200V2) || defined(SANSA_FUZEV2)
         lcd_clear_display();
         line = 0;
         lcd_puts(0, line++, "[Submodel:]");
+#if defined(SANSA_C200V2)
         lcd_putsf(0, line++, "C200v2 variant %d", c200v2_variant);
+#elif defined(SANSA_FUZEV2)
+        lcd_putsf(0, line++, "Fuzev2 variant %d", fuzev2_variant);
+#endif
         lcd_update();
         int btn = button_get_w_tmo(HZ/10);
         if(btn == (DEBUG_CANCEL|BUTTON_REL))

firmware/target/arm/as3525/sansa-fuzev2/button-fuzev2.c

@@ -257,6 +257,9 @@ int button_read_device(void)
         btn |= BUTTON_RIGHT;
     if (GPIOB_PIN(1) & 1<<1)
         btn |= BUTTON_HOME;
+    if (fuzev2_variant == 1)
+        btn ^= BUTTON_HOME;
+
     if (gpiod6 & 1<<6)
     {   /* power/hold is on the same pin. we know it's hold if the bit isn't
          * set now anymore */

firmware/target/arm/as3525/sd-as3525v2.c

@@ -394,6 +394,8 @@ static inline bool card_detect_target(void)
 static bool send_cmd(const int drive, const int cmd, const int arg, const int flags,
         unsigned long *response)
 {
+    int card_no;
+
 #if defined(HAVE_MULTIDRIVE)
     if(sd_present(SD_SLOT_AS3525))
         GPIOB_PIN(5) = (1-drive) << 5;
@@ -401,6 +403,13 @@ static bool send_cmd(const int drive, const int cmd, const int arg, const int fl
 
     MCI_ARGUMENT = arg;
 
+#ifdef SANSA_FUZEV2
+    if (fuzev2_variant == 1)
+        card_no = 1 << 16;
+    else
+#endif
+        card_no = CMD_CARD_NO(drive);
+
     /* Construct MCI_COMMAND  */
     MCI_COMMAND =
       /*b5:0*/    cmd
@@ -414,7 +423,7 @@ static bool send_cmd(const int drive, const int cmd, const int arg, const int fl
       /*b13 */  | (TRANSFER_CMD                      ? CMD_WAIT_PRV_DAT_BIT:  0)
       /*b14     | CMD_ABRT_CMD_BIT        unused  */
       /*b15     | CMD_SEND_INIT_BIT       unused  */
-   /*b20:16 */  |                                      CMD_CARD_NO(drive)
+   /*b20:16 */  |                                      card_no
       /*b21     | CMD_SEND_CLK_ONLY       unused  */
       /*b22     | CMD_READ_CEATA          unused  */
       /*b23     | CMD_CCS_EXPECTED        unused  */
@@ -580,14 +589,27 @@ static int sd_init_card(const int drive)
     /* ACMD42  */
     if(!send_cmd(drive, SD_SET_CLR_CARD_DETECT, 0, MCI_NO_RESP, NULL))
         return -17;
+
     /* Now that card is widebus make controller aware */
-    MCI_CTYPE |= (1<<drive);
+#ifdef SANSA_FUZEV2
+    if (fuzev2_variant == 1)
+        MCI_CTYPE |= 1<<1;
+    else
 #endif
+        MCI_CTYPE |= (1<<drive);
+
+#endif /* ! BOOTLOADER */
+
+    /*  Set low power mode  */
+#ifdef SANSA_FUZEV2
+    if (fuzev2_variant == 1)
+        MCI_CLKENA |= 1<<16;
+    else
+#endif
+        MCI_CLKENA |= 1<<(drive + 16);
 
     card_info[drive].initialized = 1;
 
-    MCI_CLKENA |= 1<<(drive + 16);      /*  Set low power mode  */
-
     return 0;
 }
 
@@ -682,14 +704,17 @@ static void init_controller(void)
 {
     int hcon_numcards = ((MCI_HCON>>1) & 0x1F) + 1;
     int card_mask = (1 << hcon_numcards) - 1;
+    int pwr_mask;
 
-    MCI_PWREN &= ~card_mask;            /*  power off all cards  */
+#ifdef SANSA_FUZEV2
+    if (fuzev2_variant == 1)
+        pwr_mask = 1 << 1;
+    else
+#endif
+        pwr_mask = card_mask;
 
-    MCI_CLKSRC = 0x00;                  /* All CLK_SRC_CRD set to 0*/
+    MCI_PWREN &= ~pwr_mask;             /*  power off all cards  */
-    MCI_CLKDIV = 0x00;                  /* CLK_DIV_0 : bits 7:0  */
+    MCI_PWREN = pwr_mask;               /*  power up cards  */
-
-    MCI_PWREN |= card_mask;             /*  power up cards  */
-    mci_delay();
 
     MCI_CTRL |= CTRL_RESET;
     while(MCI_CTRL & CTRL_RESET)
@@ -745,6 +770,7 @@ int sd_init(void)
 
     wakeup_init(&transfer_completion_signal);
     wakeup_init(&command_completion_signal);
+
 #ifdef HAVE_MULTIDRIVE
     /* clear previous irq */
     GPIOA_IC = EXT_SD_BITS;
@@ -754,7 +780,9 @@ int sd_init(void)
     GPIOA_IBE |= EXT_SD_BITS;
     /* enable the card detect interrupt */
     GPIOA_IE |= EXT_SD_BITS;
+#endif /* HAVE_MULTIDRIVE */
 
+#ifndef SANSA_CLIPV2
     /* Configure XPD for SD-MCI interface */
     CCU_IO |= (1<<2);
 #endif

firmware/target/arm/as3525/system-as3525.c

@@ -173,9 +173,7 @@ void fiq_handler(void)
 }
 
 #if defined(SANSA_C200V2)
-#include "dbop-as3525.h"
+int c200v2_variant;
-
-int c200v2_variant = 0;
 
 static void check_model_variant(void)
 {
@@ -188,24 +186,22 @@ static void check_model_variant(void)
      * to charge the input capacitance */
     for (i=0; i<1000; i++) asm volatile ("nop\n");
     /* read the pullup/pulldown value on A7 to determine the variant */
-    if (GPIOA_PIN(7) == 0) {
+    c200v2_variant = !GPIOA_PIN(7);
-        /*
-         * Backlight on A7.
-         */
-        c200v2_variant = 1;
-    } else {
-        /*
-         * Backlight on A5.
-         */
-        c200v2_variant = 0;
-    }
     GPIOA_DIR = saved_dir;
 }
+#elif defined(SANSA_FUZEV2)
+int fuzev2_variant;
+
+static void check_model_variant(void)
+{
+    GPIOB_DIR &= ~(1<<5);
+    fuzev2_variant = !!GPIOB_PIN(5);
+}
 #else
 static inline void check_model_variant(void)
 {
 }
-#endif /* SANSA_C200V2*/
+#endif /* model selection */
 
 void system_init(void)
 {

firmware/target/arm/as3525/system-target.h

@@ -46,6 +46,10 @@
         ? (((uintptr_t)(a)) - IRAM_ORIG) \
         : ((uintptr_t)(a))))
 
+#ifdef SANSA_FUZEV2
+extern int fuzev2_variant;
+#endif
+
 #ifdef SANSA_C200V2
 /* 0: Backlight on A5, 1: Backlight on A7 */
 extern int c200v2_variant;