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| author | Francesco VIRLINZI <francesco.virlinzi@st.com> | 2009-04-06 07:17:04 +0000 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2009-04-06 08:55:19 -0700 |
| commit | 7fd87b3f1a6955da0a21b4fd99f8939701055172 (patch) | |
| tree | 8461dd19d75747499ee9cbebad2bbaafa42a0478 | |
| parent | 0221c81b1b8eb0cbb6b30a0ced52ead32d2b4e4c (diff) | |
| download | lwn-7fd87b3f1a6955da0a21b4fd99f8939701055172.tar.gz lwn-7fd87b3f1a6955da0a21b4fd99f8939701055172.zip | |
sh: intc: Added resume from hibernation support to the intc
It's required for all modules loaded in the previous runtime
session because not initilized duing the kernel start-up.
Signed-off-by: Francesco Virlinzi <francesco.virlinzi@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| -rw-r--r-- | drivers/sh/intc.c | 35 |
1 files changed, 31 insertions, 4 deletions
diff --git a/drivers/sh/intc.c b/drivers/sh/intc.c index 7fb9b5c4669a..12d13d99b6f0 100644 --- a/drivers/sh/intc.c +++ b/drivers/sh/intc.c @@ -44,6 +44,7 @@ struct intc_handle_int { struct intc_desc_int { struct list_head list; struct sys_device sysdev; + pm_message_t state; unsigned long *reg; #ifdef CONFIG_SMP unsigned long *smp; @@ -786,18 +787,44 @@ static int intc_suspend(struct sys_device *dev, pm_message_t state) /* 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); + switch (state.event) { + case PM_EVENT_ON: + if (d->state.event != PM_EVENT_FREEZE) + break; + for_each_irq_desc(irq, desc) { + if (desc->chip != &d->chip) + continue; + if (desc->status & IRQ_DISABLED) + intc_disable(irq); + else + intc_enable(irq); + } + break; + case PM_EVENT_FREEZE: + /* nothing has to be done */ + break; + case PM_EVENT_SUSPEND: + /* 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); + } + break; } + d->state = state; return 0; } +static int intc_resume(struct sys_device *dev) +{ + return intc_suspend(dev, PMSG_ON); +} + static struct sysdev_class intc_sysdev_class = { .name = "intc", .suspend = intc_suspend, + .resume = intc_resume, }; /* register this intc as sysdev to allow suspend/resume */ |