sh: Convert r7780rp IRQ handler to IRQ chip.

Simple conversion of the R7780RP IRQ handler to struct irq_chip.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 22 insertions, 83 deletions

diff --git a/arch/sh/boards/renesas/r7780rp/irq.c b/arch/sh/boards/renesas/r7780rp/irq.c
index 2d960e9a3143..5519d3da6bc5 100644
--- a/arch/sh/boards/renesas/r7780rp/irq.c
+++ b/arch/sh/boards/renesas/r7780rp/irq.c
@@ -1,18 +1,16 @@
 /*
- * linux/arch/sh/boards/renesas/r7780rp/irq.c
- *
- * Copyright (C) 2000  Kazumoto Kojima
- *
  * Renesas Solutions Highlander R7780RP-1 Support.
  *
- * Modified for R7780RP-1 by
- * Atom Create Engineering Co., Ltd. 2002.
+ * Copyright (C) 2002  Atom Create Engineering Co., Ltd.
+ * Copyright (C) 2006  Paul Mundt
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
  */
 #include <linux/init.h>
 #include <linux/irq.h>
 #include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/r7780rp/r7780rp.h>
 
 #ifdef CONFIG_SH_R7780MP
 static int mask_pos[] = {12, 11, 9, 14, 15, 8, 13, 6, 5, 4, 3, 2, 0, 0, 1, 0};
@@ -20,71 +18,26 @@ static int mask_pos[] = {12, 11, 9, 14, 15, 8, 13, 6, 5, 4, 3, 2, 0, 0, 1, 0};
 static int mask_pos[] = {15, 14, 13, 12, 11, 10, 9, 8, 7, 5, 6, 4, 0, 1, 2, 0};
 #endif
 
-static void enable_r7780rp_irq(unsigned int irq);
-static void disable_r7780rp_irq(unsigned int irq);
-
-/* shutdown is same as "disable" */
-#define shutdown_r7780rp_irq disable_r7780rp_irq
-
-static void ack_r7780rp_irq(unsigned int irq);
-static void end_r7780rp_irq(unsigned int irq);
-
-static unsigned int startup_r7780rp_irq(unsigned int irq)
-{
-        enable_r7780rp_irq(irq);
-        return 0; /* never anything pending */
-}
-
-static void disable_r7780rp_irq(unsigned int irq)
-{
-        unsigned short val;
-        unsigned short mask = 0xffff ^ (0x0001 << mask_pos[irq]);
-
-        /* Set the priority in IPR to 0 */
-        val = ctrl_inw(IRLCNTR1);
-        val &= mask;
-        ctrl_outw(val, IRLCNTR1);
-}
-
 static void enable_r7780rp_irq(unsigned int irq)
 {
-        unsigned short val;
-        unsigned short value = (0x0001 << mask_pos[irq]);
-
         /* Set priority in IPR back to original value */
-        val = ctrl_inw(IRLCNTR1);
-        val |= value;
-        ctrl_outw(val, IRLCNTR1);
-}
-
-static void ack_r7780rp_irq(unsigned int irq)
-{
-        disable_r7780rp_irq(irq);
+        ctrl_outw(ctrl_inw(IRLCNTR1) | (1 << mask_pos[irq]), IRLCNTR1);
 }
 
-static void end_r7780rp_irq(unsigned int irq)
+static void disable_r7780rp_irq(unsigned int irq)
 {
-        if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS)))
-                enable_r7780rp_irq(irq);
+        /* Set the priority in IPR to 0 */
+        ctrl_outw(ctrl_inw(IRLCNTR1) & (0xffff ^ (1 << mask_pos[irq])),
+                  IRLCNTR1);
 }
 
-static struct hw_interrupt_type r7780rp_irq_type = {
-        .typename = "R7780RP-IRQ",
-        .startup = startup_r7780rp_irq,
-        .shutdown = shutdown_r7780rp_irq,
-        .enable = enable_r7780rp_irq,
-        .disable = disable_r7780rp_irq,
-        .ack = ack_r7780rp_irq,
-        .end = end_r7780rp_irq,
+static struct irq_chip r7780rp_irq_chip __read_mostly = {
+        .name           = "r7780rp",
+        .mask           = disable_r7780rp_irq,
+        .unmask         = enable_r7780rp_irq,
+        .mask_ack       = disable_r7780rp_irq,
 };
 
-static void make_r7780rp_irq(unsigned int irq)
-{
-        disable_irq_nosync(irq);
-        irq_desc[irq].chip = &r7780rp_irq_type;
-        disable_r7780rp_irq(irq);
-}
-
 /*
  * Initialize IRQ setting
  */
@@ -92,24 +45,10 @@ void __init init_r7780rp_IRQ(void)
 {
         int i;
 
-        /* IRL0=PCI Slot #A
-         * IRL1=PCI Slot #B
-         * IRL2=PCI Slot #C
-         * IRL3=PCI Slot #D
-         * IRL4=CF Card
-         * IRL5=CF Card Insert
-         * IRL6=M66596
-         * IRL7=SD Card
-         * IRL8=Touch Panel
-         * IRL9=SCI
-         * IRL10=Serial
-         * IRL11=Extention #A
-         * IRL11=Extention #B
-         * IRL12=Debug LAN
-         * IRL13=Push Switch
-         * IRL14=ZiggBee IO
-         */
-
-        for (i=0; i<15; i++)
-                make_r7780rp_irq(i);
+        for (i = 0; i < 15; i++) {
+                disable_irq_nosync(i);
+                set_irq_chip_and_handler(i, &r7780rp_irq_chip,
+                                         handle_level_irq);
+                disable_r7780rp_irq(i);
+        }
 }