diff options
Diffstat (limited to 'drivers/sh/intc.c')
| -rw-r--r-- | drivers/sh/intc.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/drivers/sh/intc.c b/drivers/sh/intc.c index b75f7015582..7fb9b5c4669 100644 --- a/drivers/sh/intc.c +++ b/drivers/sh/intc.c @@ -22,6 +22,8 @@ #include <linux/interrupt.h> #include <linux/bootmem.h> #include <linux/sh_intc.h> +#include <linux/sysdev.h> +#include <linux/list.h> #define _INTC_MK(fn, mode, addr_e, addr_d, width, shift) \ ((shift) | ((width) << 5) | ((fn) << 9) | ((mode) << 13) | \ @@ -40,6 +42,8 @@ struct intc_handle_int { }; struct intc_desc_int { + struct list_head list; + struct sys_device sysdev; unsigned long *reg; #ifdef CONFIG_SMP unsigned long *smp; @@ -52,6 +56,8 @@ struct intc_desc_int { struct irq_chip chip; }; +static LIST_HEAD(intc_list); + #ifdef CONFIG_SMP #define IS_SMP(x) x.smp #define INTC_REG(d, x, c) (d->reg[(x)] + ((d->smp[(x)] & 0xff) * c)) @@ -232,6 +238,11 @@ static void intc_disable(unsigned int irq) } } +static int intc_set_wake(unsigned int irq, unsigned int on) +{ + return 0; /* allow wakeup, but setup hardware in intc_suspend() */ +} + #if defined(CONFIG_CPU_SH3) || defined(CONFIG_CPU_SH4A) static void intc_mask_ack(unsigned int irq) { @@ -664,6 +675,9 @@ void __init register_intc_controller(struct intc_desc *desc) d = alloc_bootmem(sizeof(*d)); + INIT_LIST_HEAD(&d->list); + list_add(&d->list, &intc_list); + d->nr_reg = desc->mask_regs ? desc->nr_mask_regs * 2 : 0; d->nr_reg += desc->prio_regs ? desc->nr_prio_regs * 2 : 0; d->nr_reg += desc->sense_regs ? desc->nr_sense_regs : 0; @@ -711,6 +725,7 @@ void __init register_intc_controller(struct intc_desc *desc) d->chip.disable = intc_disable; d->chip.shutdown = intc_disable; d->chip.set_type = intc_set_sense; + d->chip.set_wake = intc_set_wake; #if defined(CONFIG_CPU_SH3) || defined(CONFIG_CPU_SH4A) if (desc->ack_regs) { @@ -761,3 +776,53 @@ void __init register_intc_controller(struct intc_desc *desc) intc_register_irq(desc, d, vect->enum_id, evt2irq(vect->vect)); } } + +static int intc_suspend(struct sys_device *dev, pm_message_t state) +{ + struct intc_desc_int *d; + struct irq_desc *desc; + int irq; + + /* get intc controller associated with this sysdev */ + d = container_of(dev, struct intc_desc_int, sysdev); + + /* enable wakeup irqs belonging to this intc controller */ + for_each_irq_desc(irq, desc) { + if ((desc->status & IRQ_WAKEUP) && (desc->chip == &d->chip)) + intc_enable(irq); + } + + return 0; +} + +static struct sysdev_class intc_sysdev_class = { + .name = "intc", + .suspend = intc_suspend, +}; + +/* register this intc as sysdev to allow suspend/resume */ +static int __init register_intc_sysdevs(void) +{ + struct intc_desc_int *d; + int error; + int id = 0; + + error = sysdev_class_register(&intc_sysdev_class); + if (!error) { + list_for_each_entry(d, &intc_list, list) { + d->sysdev.id = id; + d->sysdev.cls = &intc_sysdev_class; + error = sysdev_register(&d->sysdev); + if (error) + break; + id++; + } + } + + if (error) + pr_warning("intc: sysdev registration error\n"); + + return error; +} + +device_initcall(register_intc_sysdevs); |