* Get interrupts working (but crashes after 10-30secs)

* Make current_tick increase
* Convert button driver into SADC driver
* Make touchscreen handling work better (still needs good calibration routine)


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18240 a1c6a512-1295-4272-9138-f99709370657

9 files changed, 314 insertions, 158 deletions

diff --git a/bootloader/ondavx747.c b/bootloader/ondavx747.c
index a9230e7ac5..41fb00b28a 100644
--- a/bootloader/ondavx747.c
+++ b/bootloader/ondavx747.c
@@ -43,7 +43,8 @@ static void audiotest(void)
 }
 
 int main(void)
-{   
+{
+    cli();
     kernel_init();
     lcd_init();
     font_init();
@@ -55,6 +56,8 @@ int main(void)
     
     ata_init();
     
+    sti();
+    
     /* To make Windows say "ding-dong".. */
     REG8(USB_REG_POWER) &= ~USB_POWER_SOFTCONN;
 
@@ -136,12 +139,10 @@ int main(void)
         snprintf(datetime, 30, "%02d/%02d/%04d %02d:%02d:%02d", get_time()->tm_mday, get_time()->tm_mon, get_time()->tm_year,
                                      get_time()->tm_hour, get_time()->tm_min, get_time()->tm_sec);
         lcd_putsxy(LCD_WIDTH-SYSFONT_WIDTH*strlen(datetime), LCD_HEIGHT-SYSFONT_HEIGHT, datetime);
-        snprintf(datetime, 30, "%d", REG_TCU_TCNT0);
+        snprintf(datetime, 30, "%d", current_tick);
         lcd_putsxy(LCD_WIDTH-SYSFONT_WIDTH*strlen(datetime), LCD_HEIGHT-SYSFONT_HEIGHT*2, datetime);
         snprintf(datetime, 30, "X: %d Y: %d", touch>>16, touch & 0xFFFF);
         lcd_putsxy(LCD_WIDTH-SYSFONT_WIDTH*strlen(datetime), LCD_HEIGHT-SYSFONT_HEIGHT*3, datetime);
-        snprintf(datetime, 30, "%d", read_c0_count());
-        lcd_putsxy(LCD_WIDTH-SYSFONT_WIDTH*strlen(datetime), LCD_HEIGHT-SYSFONT_HEIGHT*4, datetime);
         lcd_update();
     }
     
diff --git a/firmware/SOURCES b/firmware/SOURCES
index c6cefa014f..17545b99a6 100644
--- a/firmware/SOURCES
+++ b/firmware/SOURCES
@@ -1089,6 +1089,6 @@ drivers/nand_id.c
 
 #ifdef ONDA_VX747
 target/mips/ingenic_jz47xx/onda_vx747/backlight-onda_vx747.c
-target/mips/ingenic_jz47xx/onda_vx747/button-onda_vx747.c
 target/mips/ingenic_jz47xx/onda_vx747/lcd-onda_vx747.c
+target/mips/ingenic_jz47xx/onda_vx747/sadc-onda_vx747.c
 #endif
diff --git a/firmware/target/mips/ingenic_jz47xx/kernel-jz4740.c b/firmware/target/mips/ingenic_jz47xx/kernel-jz4740.c
index 1d88c750f2..29b581dd6b 100644
--- a/firmware/target/mips/ingenic_jz47xx/kernel-jz4740.c
+++ b/firmware/target/mips/ingenic_jz47xx/kernel-jz4740.c
@@ -22,8 +22,6 @@
 #include "config.h"
 #include "system.h"
 #include "kernel.h"
-#include "timer.h"
-#include "thread.h"
 #include "jz4740.h"
 
 extern void (*tick_funcs[MAX_NUM_TICK_TASKS])(void);
@@ -35,7 +33,9 @@ void tick_start(unsigned int interval_in_ms)
     unsigned int latch;
     __cpm_start_tcu();
     
+    __tcu_stop_counter(0);
     __tcu_disable_pwm_output(0);
+    
     __tcu_mask_half_match_irq(0); 
     __tcu_unmask_full_match_irq(0);
 
@@ -49,15 +49,19 @@ void tick_start(unsigned int interval_in_ms)
     
     latch = (JZ_EXTAL / 4 + (tps>>1)) / tps;
 #endif
+    REG_TCU_TCNT(0) = 0;
     REG_TCU_TDFR(0) = latch;
     REG_TCU_TDHR(0) = latch;
+    //REG_TCU_TDHR(0) = 0;
 
     __tcu_clear_full_match_flag(0);
     __tcu_start_counter(0);
     
-    //printf("TCSR = 0x%04x\r\n",*(volatile u16 *)0xb000204C);
+    system_enable_irq(IRQ_TCU0);
+    
 }
 
+/* Interrupt handler */
 void TCU0(void)
 {
     int i;
diff --git a/firmware/target/mips/ingenic_jz47xx/onda_vx747/button-onda_vx747.c b/firmware/target/mips/ingenic_jz47xx/onda_vx747/button-onda_vx747.c
deleted file mode 100644
index a6846ba18d..0000000000
--- a/firmware/target/mips/ingenic_jz47xx/onda_vx747/button-onda_vx747.c
+++ /dev/null
@@ -1,131 +0,0 @@
-/***************************************************************************
- *             __________               __   ___.
- *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
- *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
- *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
- *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
- *                     \/            \/     \/    \/            \/
- * $Id$
- *
- * Copyright (C) 2008 by Maurus Cuelenaere
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
- * KIND, either express or implied.
- *
- ****************************************************************************/
- 
-#include "config.h"
-#include "jz4740.h"
-#include "button-target.h"
-
-#define BTN_VOL_DOWN (1 << 27)
-#define BTN_VOL_UP   (1 << 0)
-#define BTN_MENU     (1 << 1)
-#define BTN_OFF      (1 << 29)
-#define BTN_HOLD     (1 << 16)
-#define BTN_MASK     (BTN_VOL_DOWN | BTN_VOL_UP \
-                      | BTN_MENU | BTN_OFF )
-
-#define SADC_CFG_INIT (   \
-                        (2 << SADC_CFG_CLKOUT_NUM_BIT) |  \
-                        SADC_CFG_XYZ1Z2                |  \
-                        SADC_CFG_SNUM_5                |  \
-                        (1 << SADC_CFG_CLKDIV_BIT)     |  \
-                        SADC_CFG_PBAT_HIGH             |  \
-                        SADC_CFG_CMD_INT_PEN              \
-                        )
-
-bool button_hold(void)
-{
-    return (~REG_GPIO_PXPIN(3) & BTN_HOLD ? 1 : 0);
-}
-
-void button_init_device(void)
-{
-    REG_SADC_ENA = 0;
-    REG_SADC_STATE &= (~REG_SADC_STATE);
-    REG_SADC_CTRL = 0x1f;
-    
-    __cpm_start_sadc();
-    REG_SADC_CFG = SADC_CFG_INIT;
-    
-    REG_SADC_SAMETIME = 1;
-    REG_SADC_WAITTIME = 1000; /* per 100 HZ */
-    REG_SADC_STATE &= (~REG_SADC_STATE);
-    REG_SADC_CTRL &= (~(SADC_CTRL_PENDM | SADC_CTRL_TSRDYM));
-    REG_SADC_ENA = SADC_ENA_TSEN; // | REG_SADC_ENA;//SADC_ENA_TSEN | SADC_ENA_PBATEN | SADC_ENA_SADCINEN;
-}
-
-static int touch_to_pixels(short x, short y)
-{ 
-    /* X:300 -> 3800 Y:300->3900 */
-    x -= 300;
-    y -= 300;
-    
-    /* X & Y are switched */
-    x /= 3200 / LCD_WIDTH;
-    y /= 3600 / LCD_HEIGHT;
-    
-    y = LCD_HEIGHT - y;
-    
-    return (x << 16) | y;
-}
-
-int button_read_device(int *data)
-{
-    if(button_hold())
-        return 0;
-    
-    unsigned int key = ~REG_GPIO_PXPIN(3);
-    int ret = 0;
-    if(key & BTN_MASK)
-    {
-        if(key & BTN_VOL_DOWN)
-            ret |= BUTTON_VOL_DOWN;
-        if(key & BTN_VOL_UP)
-            ret |= BUTTON_VOL_UP;
-        if(key & BTN_MENU)
-            ret |= BUTTON_MENU;
-        if(key & BTN_OFF)
-            ret |= BUTTON_POWER;
-    }
-    
-    if(REG_SADC_STATE & (SADC_CTRL_TSRDYM|SADC_STATE_PEND))
-    {
-        if(REG_SADC_STATE & SADC_CTRL_PENDM)
-        {
-            REG_SADC_CTRL &= (~(SADC_CTRL_PENUM |  SADC_CTRL_TSRDYM));
-            REG_SADC_CTRL |= (SADC_CTRL_PENDM);
-            unsigned int dat;
-            unsigned short xData,yData;
-            short tszData;
-            
-            dat = REG_SADC_TSDAT;
-            
-            xData = (dat >>  0) & 0xfff;
-            yData = (dat >> 16) & 0xfff;
-            
-            dat = REG_SADC_TSDAT;
-            tszData = (dat >>  0) & 0xfff;
-            tszData = tszData - ((dat >> 16) & 0xfff);
-            
-            *data = touch_to_pixels(xData, yData);
-            
-        }
-        REG_SADC_STATE = 0;
-        //__intc_unmask_irq(IRQ_SADC);
-    }
-    else
-        *data = 0;
-
-    return ret;
-}
-void button_set_touch_available(void)
-{
-    return;
-}
diff --git a/firmware/target/mips/ingenic_jz47xx/onda_vx747/sadc-onda_vx747.c b/firmware/target/mips/ingenic_jz47xx/onda_vx747/sadc-onda_vx747.c
new file mode 100644
index 0000000000..b5c817c367
--- /dev/null
+++ b/firmware/target/mips/ingenic_jz47xx/onda_vx747/sadc-onda_vx747.c
@@ -0,0 +1,217 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2008 by Maurus Cuelenaere
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+ 
+#include "config.h"
+#include "system.h"
+#include "jz4740.h"
+#include "button-target.h"
+
+#define BTN_VOL_DOWN (1 << 27)
+#define BTN_VOL_UP   (1 << 0)
+#define BTN_MENU     (1 << 1)
+#define BTN_OFF      (1 << 29)
+#define BTN_HOLD     (1 << 16)
+#define BTN_MASK     (BTN_VOL_DOWN | BTN_VOL_UP \
+                      | BTN_MENU | BTN_OFF )
+
+
+#define TS_AD_COUNT      5
+#define M_SADC_CFG_SNUM  ((TS_AD_COUNT - 1) << SADC_CFG_SNUM_BIT)
+
+#define SADC_CFG_INIT (   \
+                        (2 << SADC_CFG_CLKOUT_NUM_BIT) |  \
+                        SADC_CFG_XYZ1Z2                |  \
+                        M_SADC_CFG_SNUM                |  \
+                        (2 << SADC_CFG_CLKDIV_BIT)     |  \
+                        SADC_CFG_PBAT_HIGH             |  \
+                        SADC_CFG_CMD_INT_PEN              \
+                        )
+
+static bool pendown_flag = false;
+static short x_pos = -1, y_pos = -1, datacount = 0;
+static short stable_x_pos = -1, stable_y_pos = -1;
+
+bool button_hold(void)
+{
+    return (~REG_GPIO_PXPIN(3) & BTN_HOLD ? 1 : 0);
+}
+
+void button_init_device(void)
+{
+    REG_SADC_ENA = 0;
+    REG_SADC_STATE &= (~REG_SADC_STATE);
+    REG_SADC_CTRL = 0x1f;
+    
+    __cpm_start_sadc();
+    REG_SADC_CFG = SADC_CFG_INIT;
+    
+    system_enable_irq(IRQ_SADC);
+    
+    REG_SADC_SAMETIME = 350;
+    REG_SADC_WAITTIME = 100; /* per 10 HZ */
+    REG_SADC_STATE &= (~REG_SADC_STATE);
+    REG_SADC_CTRL &= (~(SADC_CTRL_PENDM | SADC_CTRL_PENUM | SADC_CTRL_TSRDYM));
+    REG_SADC_ENA = (SADC_ENA_TSEN | REG_SADC_ENA); //| SADC_ENA_PBATEN | SADC_ENA_SADCINEN);
+    
+    __gpio_port_as_input(3, 29);
+    __gpio_port_as_input(3, 27);
+    __gpio_port_as_input(3, 16);
+    __gpio_port_as_input(3, 1);
+    __gpio_port_as_input(3, 0);
+}
+
+//static unsigned short touchdivider[2] = {14.5833*1000, 9*1000};
+static int touch_to_pixels(short x, short y)
+{ 
+    /* X:300 -> 3800 Y:300->3900 */
+    x -= 300;
+    y -= 300;
+    
+    x /= 3200 / LCD_WIDTH;
+    y /= 3600 / LCD_HEIGHT;
+    //x /= touchdivider[0];
+    //y /= touchdivider[1];
+    
+    y = LCD_HEIGHT - y;
+    
+    return (x << 16) | y;
+}
+
+int button_read_device(int *data)
+{
+    if(button_hold())
+        return 0;
+    
+    unsigned int key = ~(__gpio_get_port(3));
+    int ret = 0;
+    if(key & BTN_MASK)
+    {
+        if(key & BTN_VOL_DOWN)
+            ret |= BUTTON_VOL_DOWN;
+        if(key & BTN_VOL_UP)
+            ret |= BUTTON_VOL_UP;
+        if(key & BTN_MENU)
+            ret |= BUTTON_MENU;
+        if(key & BTN_OFF)
+            ret |= BUTTON_POWER;
+    }
+    
+    if(pendown_flag)
+    {
+        *data = touch_to_pixels(stable_x_pos, stable_y_pos);
+        ret |= BUTTON_TOUCH;
+    }
+    else
+        *data = 0;
+
+    return ret;
+}
+
+void button_set_touch_available(void)
+{
+    return;
+}
+
+/* Interrupt handler */
+void SADC(void)
+{
+    unsigned char state;
+    unsigned char sadcstate;
+
+    sadcstate = REG_SADC_STATE;
+    state = REG_SADC_STATE & (~REG_SADC_CTRL);
+    REG_SADC_STATE &= sadcstate;
+            
+    if(state & SADC_CTRL_PENDM)
+    {
+        /* Pen down IRQ */
+        REG_SADC_CTRL &= (~(SADC_CTRL_PENUM |  SADC_CTRL_TSRDYM));
+        REG_SADC_CTRL |= (SADC_CTRL_PENDM);// | SADC_CTRL_TSRDYM);
+        pendown_flag = true;
+    }
+    if(state & SADC_CTRL_PENUM)
+    {
+        /* Pen up IRQ */
+        REG_SADC_CTRL &= (~SADC_CTRL_PENDM );
+        REG_SADC_CTRL |= SADC_CTRL_PENUM;
+        pendown_flag = false;
+        x_pos = -1;
+        y_pos = -1;
+        stable_x_pos = -1;
+        stable_y_pos = -1;
+    }
+    if(state & SADC_CTRL_TSRDYM)
+    {
+        unsigned int   dat;
+        unsigned short xData, yData;
+        short          tsz1Data, tsz2Data;
+        
+        dat = REG_SADC_TSDAT;
+        
+        xData = (dat >>  0) & 0xfff;
+        yData = (dat >> 16) & 0xfff;
+                
+        dat = REG_SADC_TSDAT;
+        tsz1Data = (dat >>  0) & 0xfff;
+        tsz2Data = (dat >> 16) & 0xfff;
+        
+        if(!pendown_flag)
+                return ;
+        
+         tsz1Data = tsz2Data - tsz1Data;
+        
+        if((tsz1Data > 15) || (tsz1Data < -15))
+        {
+                if(x_pos == -1)
+                        x_pos = xData;
+                else
+                        x_pos = (x_pos + xData) / 2;
+                
+                if(y_pos == -1)
+                        y_pos = yData;
+                else
+                        y_pos = (y_pos + yData) / 2;
+        }
+        
+        datacount++;
+        
+        if(datacount > TS_AD_COUNT - 1)
+        {
+                if(x_pos != -1)
+                {
+                stable_x_pos = x_pos;
+                stable_y_pos = y_pos;
+                        x_pos = -1;
+                        y_pos = -1;
+                }
+                
+                datacount = 0;
+        }
+    }
+    if(state & SADC_CTRL_PBATRDYM)
+    {
+        /* Battery AD IRQ */
+    }
+    if(state & SADC_CTRL_SRDYM)
+    {
+        /* SADC AD IRQ */
+    }
+}
diff --git a/firmware/target/mips/ingenic_jz47xx/system-jz4740.c b/firmware/target/mips/ingenic_jz47xx/system-jz4740.c
index 6d1e68e115..e878173abd 100644
--- a/firmware/target/mips/ingenic_jz47xx/system-jz4740.c
+++ b/firmware/target/mips/ingenic_jz47xx/system-jz4740.c
@@ -32,9 +32,10 @@
 #define NUM_GPIO 128
 #define IRQ_MAX  (IRQ_GPIO_0 + NUM_GPIO)
 
+static int irq;
 static void UIRQ(void)
 {
-    panicf("Unhandled interrupt occurred\n");
+    panicf("Unhandled interrupt occurred: %d\n", irq);
 }
 
 #define default_interrupt(name) \
@@ -51,7 +52,6 @@ default_interrupt(SSI);
 default_interrupt(CIM);
 default_interrupt(AIC);
 default_interrupt(ETH);
-default_interrupt(TCU3);
 default_interrupt(TCU2);
 default_interrupt(TCU1);
 default_interrupt(TCU0);
@@ -197,11 +197,12 @@ default_interrupt(GPIO127);
 
 static void (* const irqvector[])(void) =
 {
-    I2C,EMC,UHC,UART0,SADC,MSC,RTC,SSI,
-    CIM,AIC,ETH,UIRQ,TCU3,TCU2,TCU1,TCU0,
-    UDC,UIRQ,UIRQ,UIRQ,UIRQ,IPU,LCD,UIRQ,
-    DMA0,DMA1,DMA2,DMA3,DMA4,DMA5,UIRQ,UIRQ,
-    UIRQ,UIRQ,UIRQ,UIRQ,UIRQ,UIRQ,UIRQ,UIRQ,
+    I2C,EMC,UHC,UIRQ,UIRQ,UIRQ,UIRQ,UIRQ,
+    UART0,UIRQ,UIRQ,SADC,UIRQ,MSC,RTC,SSI,
+    CIM,AIC,ETH,UIRQ,TCU2,TCU1,TCU0,UDC,
+    UIRQ,UIRQ,UIRQ,UIRQ,IPU,LCD,UIRQ,DMA0,
+    DMA1,DMA2,DMA3,DMA4,DMA5,UIRQ,UIRQ,UIRQ,
+    UIRQ,UIRQ,UIRQ,UIRQ,UIRQ,UIRQ,UIRQ,
     GPIO0,GPIO1,GPIO2,GPIO3,GPIO4,GPIO5,GPIO6,GPIO7,
     GPIO8,GPIO9,GPIO10,GPIO11,GPIO12,GPIO13,GPIO14,GPIO15,
     GPIO16,GPIO17,GPIO18,GPIO19,GPIO20,GPIO21,GPIO22,GPIO23,
@@ -223,7 +224,7 @@ static void (* const irqvector[])(void) =
 static unsigned int dma_irq_mask = 0;
 static unsigned int gpio_irq_mask[4] = {0};
 
-static void ena_irq(unsigned int irq)
+void system_enable_irq(unsigned int irq)
 {
     register unsigned int t;
     if ((irq >= IRQ_GPIO_0) && (irq <= IRQ_GPIO_0 + NUM_GPIO))
@@ -333,7 +334,7 @@ static int get_irq_number(void)
 
 void intr_handler(void)
 {
-    register int irq = get_irq_number();
+    irq = get_irq_number();
     if(irq < 0)
         return;
     
@@ -341,7 +342,6 @@ void intr_handler(void)
     if(irq > 0)
         irqvector[irq-1]();
     
-    printf("Interrupt!");
     return;
 }
 
@@ -558,18 +558,11 @@ void system_main(void)
     
     __dcache_writeback_all();
     __icache_invalidate_all();
-
-    //set_c0_status(1 << 22); /* Enable Boot Exception Vectors */
     
-    /* Init interrupt handlers */
+    /* Init interrupt handling */
     ipl = 0;
     for(i=0;i<IRQ_MAX;i++)
-    {
-        if(irqvector[i] == UIRQ)
-            dis_irq(i);
-        else
-            ena_irq(i);
-    }
+        dis_irq(i);
     
     sti();
     
diff --git a/firmware/target/mips/ingenic_jz47xx/system-target.h b/firmware/target/mips/ingenic_jz47xx/system-target.h
index d923a48546..7d4c28756a 100644
--- a/firmware/target/mips/ingenic_jz47xx/system-target.h
+++ b/firmware/target/mips/ingenic_jz47xx/system-target.h
@@ -94,8 +94,11 @@ void __dcache_invalidate_all(void);
 void __icache_invalidate_all(void);
 void __flush_dcache_line(unsigned long addr);
 void dma_cache_wback_inv(unsigned long addr, unsigned long size);
+void system_enable_irq(unsigned int irq);
 void sti(void);
 void cli(void);
+void udelay(unsigned int usec);
+void mdelay(unsigned int msec);
 
 #endif /* __SYSTEM_TARGET_H_ */
 
diff --git a/firmware/target/mips/ingenic_jz47xx/timer-jz4740.c b/firmware/target/mips/ingenic_jz47xx/timer-jz4740.c
new file mode 100644
index 0000000000..00c8abcdbd
--- /dev/null
+++ b/firmware/target/mips/ingenic_jz47xx/timer-jz4740.c
@@ -0,0 +1,28 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2008 by Maurus Cuelenaere
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+ 
+#include "config.h"
+#include "jz4740.h"
+
+
+bool __timer_set(long cycles, bool set);
+bool __timer_register(void);
+void __timer_unregister(void);
diff --git a/firmware/target/mips/ingenic_jz47xx/timer-target.h b/firmware/target/mips/ingenic_jz47xx/timer-target.h
new file mode 100644
index 0000000000..202f941ce1
--- /dev/null
+++ b/firmware/target/mips/ingenic_jz47xx/timer-target.h
@@ -0,0 +1,41 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2008 by Maurus Cuelenaere
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#ifndef __TIMER_H_
+#define __TIMER_H_
+
+#define TIMER_FREQ (27000000)
+
+bool __timer_set(long cycles, bool set);
+bool __timer_register(void);
+void __timer_unregister(void);
+
+#define __TIMER_SET(cycles, set) \
+    __timer_set(cycles, set)
+
+#define __TIMER_REGISTER(reg_prio, unregister_callback, cycles, \
+                              int_prio, timer_callback) \
+    __timer_register()
+
+#define __TIMER_UNREGISTER(...) \
+    __timer_unregister()
+
+#endif /* __TIMER_H_ */