linux 2.6.16.38 w/ vs2.0.3-rc1

[linux-2.6.git] / arch / arm / mach-s3c2410 / s3c2440-irq.c

diff --git a/arch/arm/mach-s3c2410/s3c2440-irq.c b/arch/arm/mach-s3c2410/s3c2440-irq.c
index 1667ba1..278d004 100644 (file)
--- a/arch/arm/mach-s3c2410/s3c2440-irq.c
+++ b/arch/arm/mach-s3c2410/s3c2440-irq.c
@@ -17,6 +17,9 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  *
+ * Changelog:
+ *     25-Jul-2005 BJD         Split from irq.c
+ *
 */
 
 #include <linux/init.h>
@@ -97,12 +100,73 @@ static struct irqchip s3c_irq_wdtac97 = {
        .ack        = s3c_irq_wdtac97_ack,
 };
 
+/* camera irq */
+
+static void s3c_irq_demux_cam(unsigned int irq,
+                             struct irqdesc *desc,
+                             struct pt_regs *regs)
+{
+       unsigned int subsrc, submsk;
+       struct irqdesc *mydesc;
+
+       /* read the current pending interrupts, and the mask
+        * for what it is available */
+
+       subsrc = __raw_readl(S3C2410_SUBSRCPND);
+       submsk = __raw_readl(S3C2410_INTSUBMSK);
+
+       subsrc &= ~submsk;
+       subsrc >>= 11;
+       subsrc &= 3;
+
+       if (subsrc != 0) {
+               if (subsrc & 1) {
+                       mydesc = irq_desc + IRQ_S3C2440_CAM_C;
+                       desc_handle_irq(IRQ_S3C2440_CAM_C, mydesc, regs);
+               }
+               if (subsrc & 2) {
+                       mydesc = irq_desc + IRQ_S3C2440_CAM_P;
+                       desc_handle_irq(IRQ_S3C2440_CAM_P, mydesc, regs);
+               }
+       }
+}
+
+#define INTMSK_CAM (1UL << (IRQ_CAM - IRQ_EINT0))
+
+static void
+s3c_irq_cam_mask(unsigned int irqno)
+{
+       s3c_irqsub_mask(irqno, INTMSK_CAM, 3<<11);
+}
+
+static void
+s3c_irq_cam_unmask(unsigned int irqno)
+{
+       s3c_irqsub_unmask(irqno, INTMSK_CAM);
+}
+
+static void
+s3c_irq_cam_ack(unsigned int irqno)
+{
+       s3c_irqsub_maskack(irqno, INTMSK_CAM, 3<<11);
+}
+
+static struct irqchip s3c_irq_cam = {
+       .mask       = s3c_irq_cam_mask,
+       .unmask     = s3c_irq_cam_unmask,
+       .ack        = s3c_irq_cam_ack,
+};
+
 static int s3c2440_irq_add(struct sys_device *sysdev)
 {
        unsigned int irqno;
 
        printk("S3C2440: IRQ Support\n");
 
+       set_irq_chip(IRQ_NFCON, &s3c_irq_level_chip);
+       set_irq_handler(IRQ_NFCON, do_level_IRQ);
+       set_irq_flags(IRQ_NFCON, IRQF_VALID);
+
        /* add new chained handler for wdt, ac7 */
 
        set_irq_chip(IRQ_WDT, &s3c_irq_level_chip);
@@ -115,6 +179,18 @@ static int s3c2440_irq_add(struct sys_device *sysdev)
                set_irq_flags(irqno, IRQF_VALID);
        }
 
+       /* add chained handler for camera */
+
+       set_irq_chip(IRQ_CAM, &s3c_irq_level_chip);
+       set_irq_handler(IRQ_CAM, do_level_IRQ);
+       set_irq_chained_handler(IRQ_CAM, s3c_irq_demux_cam);
+
+       for (irqno = IRQ_S3C2440_CAM_C; irqno <= IRQ_S3C2440_CAM_P; irqno++) {
+               set_irq_chip(irqno, &s3c_irq_cam);
+               set_irq_handler(irqno, do_level_IRQ);
+               set_irq_flags(irqno, IRQF_VALID);
+       }
+
        return 0;
 }
 
@@ -122,10 +198,10 @@ static struct sysdev_driver s3c2440_irq_driver = {
        .add    = s3c2440_irq_add,
 };
 
-static int s3c2440_irq_init(void)
+static int s3c24xx_irq_driver(void)
 {
        return sysdev_driver_register(&s3c2440_sysclass, &s3c2440_irq_driver);
 }
 
-arch_initcall(s3c2440_irq_init);
+arch_initcall(s3c24xx_irq_driver);