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regmap: irq: Enable devices for runtime PM while handling interrupts

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Some devices need to have a runtime PM reference while handling interrupts
to ensure that the register I/O is available. Support this with a flag in
the chip.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown
2012-07-24 15:41:19 +01:00
parent 40052ca0c2
commit 0c00c50b41
2 changed files with 27 additions and 0 deletions
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2
include/linux/regmap.h
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@@ -285,6 +285,7 @@ struct regmap_irq {
* @ack_base: Base ack address. If zero then the chip is clear on read.
* @wake_base: Base address for wake enables. If zero unsupported.
* @irq_reg_stride: Stride to use for chips where registers are not contiguous.
* @runtime_pm: Hold a runtime PM lock on the device when accessing it.
*
* @num_regs: Number of registers in each control bank.
* @irqs: Descriptors for individual IRQs. Interrupt numbers are
@@ -299,6 +300,7 @@ struct regmap_irq_chip {
unsigned int ack_base;
unsigned int wake_base;
unsigned int irq_reg_stride;
bool runtime_pm;
int num_regs;