projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 65fa22b7 BD |
1 | /* linux/arch/arm/plat-s3c24xx/irq-om.c |
| 2 | * | |
| e02f8664 | 3 | * Copyright (c) 2003-2004 Simtec Electronics |
| 65fa22b7 BD |
4 | * Ben Dooks <ben@simtec.co.uk> |
| 5 | * http://armlinux.simtec.co.uk/ | |
| 6 | * | |
| 7 | * S3C24XX - IRQ PM code | |
| 8 | * | |
| 9 | * This program is free software; you can redistribute it and/or modify | |
| 10 | * it under the terms of the GNU General Public License version 2 as | |
| 11 | * published by the Free Software Foundation. | |
| 12 | */ | |
| 13 | ||
| 14 | #include <linux/init.h> | |
| 15 | #include <linux/module.h> | |
| 16 | #include <linux/interrupt.h> | |
| 57436c2d | 17 | #include <linux/irq.h> |
| d8fdec16 | 18 | #include <linux/syscore_ops.h> |
| dc1a3538 | 19 | #include <linux/io.h> |
| 65fa22b7 BD |
20 | |
| 21 | #include <plat/cpu.h> | |
| 22 | #include <plat/pm.h> | |
| dc1a3538 HS |
23 | #include <plat/map-base.h> |
| 24 | #include <plat/map-s3c.h> | |
| 25 | ||
| 26 | #include <mach/regs-irq.h> | |
| 27 | #include <mach/regs-gpio.h> | |
| 26922c59 | 28 | #include <mach/pm-core.h> |
| 65fa22b7 | 29 | |
| 57436c2d LB |
30 | #include <asm/irq.h> |
| 31 | ||
| 57436c2d | 32 | int s3c_irq_wake(struct irq_data *data, unsigned int state) |
| 65fa22b7 | 33 | { |
| b4a343e5 | 34 | unsigned long irqbit = 1 << data->hwirq; |
| 65fa22b7 BD |
35 | |
| 36 | if (!(s3c_irqwake_intallow & irqbit)) | |
| 37 | return -ENOENT; | |
| 38 | ||
| b4a343e5 HS |
39 | pr_info("wake %s for hwirq %lu\n", |
| 40 | state ? "enabled" : "disabled", data->hwirq); | |
| 65fa22b7 BD |
41 | |
| 42 | if (!state) | |
| 43 | s3c_irqwake_intmask |= irqbit; | |
| 44 | else | |
| 45 | s3c_irqwake_intmask &= ~irqbit; | |
| 46 | ||
| 47 | return 0; | |
| 48 | } | |
| 49 | ||
| 65fa22b7 BD |
50 | static struct sleep_save irq_save[] = { |
| 51 | SAVE_ITEM(S3C2410_INTMSK), | |
| 52 | SAVE_ITEM(S3C2410_INTSUBMSK), | |
| 53 | }; | |
| 54 | ||
| 55 | /* the extint values move between the s3c2410/s3c2440 and the s3c2412 | |
| 56 | * so we use an array to hold them, and to calculate the address of | |
| 57 | * the register at run-time | |
| 58 | */ | |
| 59 | ||
| 60 | static unsigned long save_extint[3]; | |
| 61 | static unsigned long save_eintflt[4]; | |
| 62 | static unsigned long save_eintmask; | |
| 63 | ||
| d8fdec16 | 64 | static int s3c24xx_irq_suspend(void) |
| 65fa22b7 BD |
65 | { |
| 66 | unsigned int i; | |
| 67 | ||
| 68 | for (i = 0; i < ARRAY_SIZE(save_extint); i++) | |
| 69 | save_extint[i] = __raw_readl(S3C24XX_EXTINT0 + (i*4)); | |
| 70 | ||
| 71 | for (i = 0; i < ARRAY_SIZE(save_eintflt); i++) | |
| 72 | save_eintflt[i] = __raw_readl(S3C24XX_EINFLT0 + (i*4)); | |
| 73 | ||
| 74 | s3c_pm_do_save(irq_save, ARRAY_SIZE(irq_save)); | |
| 75 | save_eintmask = __raw_readl(S3C24XX_EINTMASK); | |
| 76 | ||
| 77 | return 0; | |
| 78 | } | |
| 79 | ||
| d8fdec16 | 80 | static void s3c24xx_irq_resume(void) |
| 65fa22b7 BD |
81 | { |
| 82 | unsigned int i; | |
| 83 | ||
| 84 | for (i = 0; i < ARRAY_SIZE(save_extint); i++) | |
| 85 | __raw_writel(save_extint[i], S3C24XX_EXTINT0 + (i*4)); | |
| 86 | ||
| 87 | for (i = 0; i < ARRAY_SIZE(save_eintflt); i++) | |
| 88 | __raw_writel(save_eintflt[i], S3C24XX_EINFLT0 + (i*4)); | |
| 89 | ||
| 90 | s3c_pm_do_restore(irq_save, ARRAY_SIZE(irq_save)); | |
| 91 | __raw_writel(save_eintmask, S3C24XX_EINTMASK); | |
| 65fa22b7 | 92 | } |
| d8fdec16 HS |
93 | |
| 94 | struct syscore_ops s3c24xx_irq_syscore_ops = { | |
| 95 | .suspend = s3c24xx_irq_suspend, | |
| 96 | .resume = s3c24xx_irq_resume, | |
| 97 | }; | |
| ef602eb5 HS |
98 | |
| 99 | #ifdef CONFIG_CPU_S3C2416 | |
| 100 | static struct sleep_save s3c2416_irq_save[] = { | |
| 101 | SAVE_ITEM(S3C2416_INTMSK2), | |
| 102 | }; | |
| 103 | ||
| 104 | static int s3c2416_irq_suspend(void) | |
| 105 | { | |
| 106 | s3c_pm_do_save(s3c2416_irq_save, ARRAY_SIZE(s3c2416_irq_save)); | |
| 107 | ||
| 108 | return 0; | |
| 109 | } | |
| 110 | ||
| 111 | static void s3c2416_irq_resume(void) | |
| 112 | { | |
| 113 | s3c_pm_do_restore(s3c2416_irq_save, ARRAY_SIZE(s3c2416_irq_save)); | |
| 114 | } | |
| 115 | ||
| 116 | struct syscore_ops s3c2416_irq_syscore_ops = { | |
| 117 | .suspend = s3c2416_irq_suspend, | |
| 118 | .resume = s3c2416_irq_resume, | |
| 119 | }; | |
| 120 | #endif |