Implement PWM backlight driver for the Meizus. Update Meizu M3 bootloader to control brightness with the touch strip.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21478 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 6 insertions, 5 deletions

diff --git a/firmware/target/arm/s5l8700/system-s5l8700.c b/firmware/target/arm/s5l8700/system-s5l8700.c
index c535a0d955..48c50645e9 100644
--- a/firmware/target/arm/s5l8700/system-s5l8700.c
+++ b/firmware/target/arm/s5l8700/system-s5l8700.c
@@ -95,12 +95,13 @@ void irq_handler(void)
     asm volatile(   "stmfd sp!, {r0-r7, ip, lr} \n"   /* Store context */
                     "sub   sp, sp, #8           \n"); /* Reserve stack */
 
-    int irq_no = INTOFFSET;   /* Read clears the corresponding IRQ status */
+    int irq_no = INTOFFSET;
     
-    if ((irq_no & (1<<31)) == 0)  /* Ensure invalid flag is not set */
-    {
-        irqvector[irq_no]();
-    }
+    irqvector[irq_no]();
+
+    /* clear interrupt */
+    SRCPND = (1 << irq_no);
+    INTPND = INTPND;
     
     asm volatile(   "add   sp, sp, #8           \n"   /* Cleanup stack   */
                     "ldmfd sp!, {r0-r7, ip, lr} \n"   /* Restore context */