sh: mach-se: Convert SE7343 FPGA to dynamic IRQ allocation.

[linux-drm-fsl-dcu.git] / arch / sh / boards / mach-se / 7343 / irq.c

diff --git a/arch/sh/boards/mach-se/7343/irq.c b/arch/sh/boards/mach-se/7343/irq.c
index 051c29d4eae0ed472c687218c3ab4b5b928f04aa..c60fd13608d06725c676e24df966b448f7a5dd02 100644 (file)
--- a/arch/sh/boards/mach-se/7343/irq.c
+++ b/arch/sh/boards/mach-se/7343/irq.c
@@ -16,15 +16,17 @@
 #include <linux/io.h>
 #include <mach-se/mach/se7343.h>
 
+unsigned int se7343_fpga_irq[SE7343_FPGA_IRQ_NR] = { 0, };
+
 static void disable_se7343_irq(unsigned int irq)
 {
-       unsigned int bit = irq - SE7343_FPGA_IRQ_BASE;
+       unsigned int bit = (unsigned int)get_irq_chip_data(irq);
        ctrl_outw(ctrl_inw(PA_CPLD_IMSK) | 1 << bit, PA_CPLD_IMSK);
 }
 
 static void enable_se7343_irq(unsigned int irq)
 {
-       unsigned int bit = irq - SE7343_FPGA_IRQ_BASE;
+       unsigned int bit = (unsigned int)get_irq_chip_data(irq);
        ctrl_outw(ctrl_inw(PA_CPLD_IMSK) & ~(1 << bit), PA_CPLD_IMSK);
 }
 
@@ -38,18 +40,15 @@ static struct irq_chip se7343_irq_chip __read_mostly = {
 static void se7343_irq_demux(unsigned int irq, struct irq_desc *desc)
 {
        unsigned short intv = ctrl_inw(PA_CPLD_ST);
-       struct irq_desc *ext_desc;
-       unsigned int ext_irq = SE7343_FPGA_IRQ_BASE;
+       unsigned int ext_irq = 0;
 
        intv &= (1 << SE7343_FPGA_IRQ_NR) - 1;
 
-       while (intv) {
-               if (intv & 1) {
-                       ext_desc = irq_desc + ext_irq;
-                       handle_level_irq(ext_irq, ext_desc);
-               }
-               intv >>= 1;
-               ext_irq++;
+       for (; intv; intv >>= 1, ext_irq++) {
+               if (!(intv & 1))
+                       continue;
+
+               generic_handle_irq(se7343_fpga_irq[ext_irq]);
        }
 }
 
@@ -58,16 +57,24 @@ static void se7343_irq_demux(unsigned int irq, struct irq_desc *desc)
  */
 void __init init_7343se_IRQ(void)
 {
-       int i;
+       int i, irq;
 
        ctrl_outw(0, PA_CPLD_IMSK);     /* disable all irqs */
        ctrl_outw(0x2000, 0xb03fffec);  /* mrshpc irq enable */
 
-       for (i = 0; i < SE7343_FPGA_IRQ_NR; i++)
-               set_irq_chip_and_handler_name(SE7343_FPGA_IRQ_BASE + i,
+       for (i = 0; i < SE7343_FPGA_IRQ_NR; i++) {
+               irq = create_irq();
+               if (irq < 0)
+                       return;
+               se7343_fpga_irq[i] = irq;
+
+               set_irq_chip_and_handler_name(se7343_fpga_irq[i],
                                              &se7343_irq_chip,
                                              handle_level_irq, "level");
 
+               set_irq_chip_data(se7343_fpga_irq[i], (void *)i);
+       }
+
        set_irq_chained_handler(IRQ0_IRQ, se7343_irq_demux);
        set_irq_type(IRQ0_IRQ, IRQ_TYPE_LEVEL_LOW);
        set_irq_chained_handler(IRQ1_IRQ, se7343_irq_demux);