From 271c67e802c65b243c7e4c76e276a893345f15fe Mon Sep 17 00:00:00 2001
From: Michael Sparmann <theseven@rockbox.org>
Date: Mon, 5 Oct 2009 16:01:26 +0000
Subject: Fix the user timer on iPod Nano 2G

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22959 a1c6a512-1295-4272-9138-f99709370657
---
 firmware/target/arm/s5l8700/system-s5l8700.c | 19 +++++++++++++++----
 firmware/target/arm/s5l8700/timer-s5l8700.c  | 20 ++++++++++----------
 2 files changed, 25 insertions(+), 14 deletions(-)

(limited to 'firmware/target/arm')

diff --git a/firmware/target/arm/s5l8700/system-s5l8700.c b/firmware/target/arm/s5l8700/system-s5l8700.c
index 3477bb8886..a557700436 100644
--- a/firmware/target/arm/s5l8700/system-s5l8700.c
+++ b/firmware/target/arm/s5l8700/system-s5l8700.c
@@ -64,14 +64,25 @@ default_interrupt(RESERVED2);
 default_interrupt(INT_MSTICK);
 default_interrupt(INT_ADC_WAKEUP);
 default_interrupt(INT_ADC);
+default_interrupt(INT_UNK1);
+default_interrupt(INT_UNK2);
+default_interrupt(INT_UNK3);
 
 
+void INT_TIMER(void)
+{
+    if (TACON & 0x00038000) INT_TIMERA();
+    if (TBCON & 0x00038000) INT_TIMERB();
+    if (TCCON & 0x00038000) INT_TIMERC();
+    if (TDCON & 0x00038000) INT_TIMERD();
+}
+
 
 #if CONFIG_CPU==S5L8701
 static void (* const irqvector[])(void) =
 { /* still 90% unverified and probably incorrect */
-    EXT0,EXT1,EXT2,EINT_VBUS,EINTG,INT_TIMERB,INT_WDT,INT_TIMERA,
-    INT_TIMERC,INT_TIMERD,INT_DMA,INT_ALARM_RTC,INT_PRI_RTC,RESERVED1,INT_UART,INT_USB_HOST,
+    EXT0,EXT1,EXT2,EINT_VBUS,EINTG,INT_TIMER,INT_WDT,INT_UNK1,
+    INT_UNK2,INT_UNK3,INT_DMA,INT_ALARM_RTC,INT_PRI_RTC,RESERVED1,INT_UART,INT_USB_HOST,
     INT_USB_FUNC,INT_LCDC_0,INT_LCDC_1,INT_CALM,INT_ATA,INT_UART0,INT_SPDIF_OUT,INT_ECC,
     INT_SDCI,INT_LCD,INT_SPI,INT_IIC,RESERVED2,INT_MSTICK,INT_ADC_WAKEUP,INT_ADC
 };
@@ -88,8 +99,8 @@ static void (* const irqvector[])(void) =
 #if CONFIG_CPU==S5L8701
 static const char * const irqname[] =
 { /* still 90% unverified and probably incorrect */
-    "EXT0","EXT1","EXT2","EINT_VBUS","EINTG","INT_TIMERB","INT_WDT","INT_TIMERA",
-    "INT_TIMERC","INT_TIMERD","INT_DMA","INT_ALARM_RTC","INT_PRI_RTC","Reserved","INT_UART","INT_USB_HOST",
+    "EXT0","EXT1","EXT2","EINT_VBUS","EINTG","INT_TIMER","INT_WDT","INT_UNK1",
+    "INT_UNK2","INT_UNK3","INT_DMA","INT_ALARM_RTC","INT_PRI_RTC","Reserved","INT_UART","INT_USB_HOST",
     "INT_USB_FUNC","INT_LCDC_0","INT_LCDC_1","INT_CALM","INT_ATA","INT_UART0","INT_SPDIF_OUT","INT_ECC",
     "INT_SDCI","INT_LCD","INT_SPI","INT_IIC","Reserved","INT_MSTICK","INT_ADC_WAKEUP","INT_ADC"
 };
diff --git a/firmware/target/arm/s5l8700/timer-s5l8700.c b/firmware/target/arm/s5l8700/timer-s5l8700.c
index 3e8e7d7ad4..9ae7e01565 100644
--- a/firmware/target/arm/s5l8700/timer-s5l8700.c
+++ b/firmware/target/arm/s5l8700/timer-s5l8700.c
@@ -35,10 +35,10 @@
     TODO: investigate why the timer seems to count twice as fast as expected
 */
 
-void INT_TIMERD(void)
+void INT_TIMERC(void)
 {
     /* clear interrupt */
-    TDCON = TDCON;
+    TCCON = TCCON;
     
     if (pfn_timer != NULL) {
         pfn_timer();
@@ -52,7 +52,7 @@ bool timer_set(long cycles, bool start)
     long count;
 
     /* stop and clear timer */
-    TDCMD = (1 << 1);   /* TD_CLR */
+    TCCMD = (1 << 1);   /* TD_CLR */
 
     /* optionally unregister any previously registered timer user */
     if (start) {
@@ -78,27 +78,27 @@ bool timer_set(long cycles, bool start)
     }
 
     /* configure timer */
-    TDCON = (1 << 12) |     /* TD_INT0_EN */
+    TCCON = (1 << 12) |     /* TD_INT0_EN */
             (cs << 8) |     /* TS_CS */
             (0 << 4);       /* TD_MODE_SEL, 0 = interval mode */
-    TDPRE = prescale - 1;
-    TDDATA0 = count;
-    TDCMD = (1 << 0);       /* TD_ENABLE */
+    TCPRE = prescale - 1;
+    TCDATA0 = count;
+    TCCMD = (1 << 0);       /* TD_ENABLE */
 
     /* enable interrupt */
-    INTMSK |= (1 << 9);
+    INTMSK |=  INTMSK_TIMERC;
     
     return true;
 }
 
 bool timer_start(void)
 {
-    TDCMD = (1 << 0);       /* TD_ENABLE */
+    TCCMD = (1 << 0);       /* TD_ENABLE */
     return true;
 }
 
 void timer_stop(void)
 {
-    TDCMD = (0 << 0);       /* TD_ENABLE */
+    TCCMD = (0 << 0);       /* TD_ENABLE */
 }
 
-- 
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