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

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>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/regmap.h b/include/linux/regmap.h
index 7f7e00df3adf..9c4c9c673f38 100644
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -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;