Fixed the problem on the x5 of spontaneous shutdown after holding the power key for 1s.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@10904 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 34 insertions, 0 deletions

diff --git a/firmware/target/coldfire/iaudio/x5/pcf50606-x5.c b/firmware/target/coldfire/iaudio/x5/pcf50606-x5.c
index 2f3ee2bc09..dde20d8b7c 100644
--- a/firmware/target/coldfire/iaudio/x5/pcf50606-x5.c
+++ b/firmware/target/coldfire/iaudio/x5/pcf50606-x5.c
@@ -154,6 +154,8 @@ static void set_voltages(void)
 
 void pcf50606_init(void)
 {
+    unsigned char read[3];
+
     /* Bit banged I2C */
     or_l(0x00001000, &GPIO1_OUT);
     or_l(0x00000400, &GPIO_OUT);
@@ -164,8 +166,19 @@ void pcf50606_init(void)
 
     i2c_add_node(&pcf50606_i2c);
 
+    /* unmask ONKEY1S - ONKEY held low for 1 second */
+    pcf50606_write(0x05, ~0x04);
+    /* clear INT1-3 as these are left set after standby */
+    pcf50606_read_multiple(0x02, read, 3);
+
     set_voltages();
 
+    /* enable GPI0 interrupts (pcf50606 IRQ) */
+    and_l(~0x00000001, &GPIO_ENABLE);
+    or_l(0x00000001, &GPIO_FUNCTION);
+    or_l(0x00000100, &GPIO_INT_EN);     /* GPI0 H-L */
+    INTPRI5 |= 0x00000006;              /* INT32 - Priority 6 */
+
     pcf50606_write(0x39, 0x00); /* GPOOD0 = green led OFF */
     pcf50606_write(0x3a, 0x00); /* GPOOD1 = red led OFF */
 
@@ -183,3 +196,24 @@ void pcf50606_init(void)
     pcf50606_write(0x38, 0xb0); /* Backlight ON, GPO1INV=1, GPO1ACT=011 */
 #endif
 }
+
+/* Handles interrupts generated by the pcf50606 */
+void GPI0(void) __attribute__ ((interrupt_handler, section(".text")));
+void GPI0(void)
+{
+    char read[3]; /* 0 = INT1, 1 = INT2, 2 = INT3 */
+
+    /* Clear pending interrupts from pcf50606 - reading all INT* registers
+       resets the INT pin to high */
+    pcf50606_read_multiple(0x02, read, 3);
+
+    if (read[0] & 0x04)
+    {
+        /** ONKEY1S **/
+        /* reset timeout or else pcf50606 will go into standby in 8s */
+        pcf50606_write(0x08, pcf50606_read(0x08) | 0x02); /* OOCC1 - TOTRST=1 */
+    }
+
+    /* Clear pending GPI0 interrupts */
+    or_l(0x00000100, &GPIO_INT_CLEAR);
+}