path: root/drivers/base/regmap/regmap-irq.c
diff options
authorStephen Warren <swarren@nvidia.com>2012-08-01 11:40:49 -0600
committerMark Brown <broonie@opensource.wolfsonmicro.com>2012-08-04 12:13:53 +0100
commit685879f4b2036e58c1a0cdaaee2b155d3c965461 (patch)
tree682b86c2c94bdc14c6ca4a4ddc32d0a29a5e955b /drivers/base/regmap/regmap-irq.c
parentca142750f8ac3d01e45909e624ca783779894640 (diff)
regmap: set MASK_ON_SUSPEND/SKIP_SET_WAKE if no wake_base
If a regmap-irq chip has no wake base: * There's no point calling .irq_set_wake, hence IRQCHIP_SKIP_SET_WAKE. * If some IRQs in the chip are enabled for wake and some aren't, we should mask those interrupts that are not wake enabled, so that if they occur during suspend, the system is not awoken. Hence, IRQCHIP_MASK_ON_SUSPEND. Note that IRQCHIP_MASK_ON_SUSPEND is handled by check_wakeup_irqs(), which always iterates over every single interrupt in the system, irrespective of whether an interrupt is a child of a controller whose output interrupt has no wake-enabled inputs and hence is presumably masked itself. Hence this change might cause interrupt unnecessary masking operations and associated register I/O. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'drivers/base/regmap/regmap-irq.c')
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/base/regmap/regmap-irq.c b/drivers/base/regmap/regmap-irq.c
index bf1203cbd122..9a6649c82daa 100644
--- a/drivers/base/regmap/regmap-irq.c
+++ b/drivers/base/regmap/regmap-irq.c
@@ -287,6 +287,11 @@ int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags,
d->irq_chip = regmap_irq_chip;
d->irq_chip.name = chip->name;
+ if (!chip->wake_base) {
+ d->irq_chip.irq_set_wake = NULL;
+ d->irq_chip.flags |= IRQCHIP_MASK_ON_SUSPEND |
+ }
d->irq = irq;
d->map = map;
d->chip = chip;