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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>
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Paul Mundt
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Oct 6, 2006
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,115 +1,54 @@ | ||
| /* | ||
| * 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}; | ||
| #else | ||
| 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 | ||
|
|
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| static void ack_r7780rp_irq(unsigned int irq); | ||
| static void end_r7780rp_irq(unsigned int irq); | ||
|
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||
| 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); | ||
| } | ||
|
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||
| 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 | ||
| */ | ||
| 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); | ||
| } | ||
| } |