124 lines
2.6 KiB
C
124 lines
2.6 KiB
C
/*
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* linux/arch/sh/boards/renesas/r7780rp/irq.c
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*
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* Copyright (C) 2000 Kazumoto Kojima
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*
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* Renesas Solutions Highlander R7780RP-1 Support.
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*
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* Modified for R7780RP-1 by
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* Atom Create Engineering Co., Ltd. 2002.
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*/
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#include <linux/config.h>
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#include <linux/init.h>
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#include <linux/irq.h>
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#include <asm/io.h>
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#include <asm/irq.h>
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#include <asm/r7780rp/r7780rp.h>
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#ifdef CONFIG_SH_R7780MP
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static int mask_pos[] = {12, 11, 9, 14, 15, 8, 13, 6, 5, 4, 3, 2, 0, 0, 1, 0};
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#else
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static int mask_pos[] = {15, 14, 13, 12, 11, 10, 9, 8, 7, 5, 6, 4, 0, 1, 2, 0};
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#endif
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static void enable_r7780rp_irq(unsigned int irq);
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static void disable_r7780rp_irq(unsigned int irq);
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/* shutdown is same as "disable" */
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#define shutdown_r7780rp_irq disable_r7780rp_irq
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static void ack_r7780rp_irq(unsigned int irq);
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static void end_r7780rp_irq(unsigned int irq);
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static unsigned int startup_r7780rp_irq(unsigned int irq)
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{
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enable_r7780rp_irq(irq);
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return 0; /* never anything pending */
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}
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static void disable_r7780rp_irq(unsigned int irq)
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{
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unsigned long flags;
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unsigned short val;
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unsigned short mask = 0xffff ^ (0x0001 << mask_pos[irq]);
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/* Set the priority in IPR to 0 */
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local_irq_save(flags);
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val = ctrl_inw(IRLCNTR1);
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val &= mask;
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ctrl_outw(val, IRLCNTR1);
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local_irq_restore(flags);
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}
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static void enable_r7780rp_irq(unsigned int irq)
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{
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unsigned long flags;
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unsigned short val;
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unsigned short value = (0x0001 << mask_pos[irq]);
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/* Set priority in IPR back to original value */
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local_irq_save(flags);
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val = ctrl_inw(IRLCNTR1);
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val |= value;
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ctrl_outw(val, IRLCNTR1);
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local_irq_restore(flags);
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}
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static void ack_r7780rp_irq(unsigned int irq)
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{
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disable_r7780rp_irq(irq);
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}
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static void end_r7780rp_irq(unsigned int irq)
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{
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if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS)))
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enable_r7780rp_irq(irq);
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}
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static struct hw_interrupt_type r7780rp_irq_type = {
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.typename = "R7780RP-IRQ",
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.startup = startup_r7780rp_irq,
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.shutdown = shutdown_r7780rp_irq,
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.enable = enable_r7780rp_irq,
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.disable = disable_r7780rp_irq,
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.ack = ack_r7780rp_irq,
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.end = end_r7780rp_irq,
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};
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static void make_r7780rp_irq(unsigned int irq)
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{
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disable_irq_nosync(irq);
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irq_desc[irq].handler = &r7780rp_irq_type;
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disable_r7780rp_irq(irq);
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}
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/*
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* Initialize IRQ setting
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*/
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void __init init_r7780rp_IRQ(void)
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{
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int i;
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/* IRL0=PCI Slot #A
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* IRL1=PCI Slot #B
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* IRL2=PCI Slot #C
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* IRL3=PCI Slot #D
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* IRL4=CF Card
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* IRL5=CF Card Insert
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* IRL6=M66596
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* IRL7=SD Card
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* IRL8=Touch Panel
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* IRL9=SCI
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* IRL10=Serial
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* IRL11=Extention #A
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* IRL11=Extention #B
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* IRL12=Debug LAN
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* IRL13=Push Switch
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* IRL14=ZiggBee IO
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*/
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for (i=0; i<15; i++)
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make_r7780rp_irq(i);
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}
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