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regmap-irq: Introduce inverted status registers support

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Some interrupt controllers have inverted status register:
cleared bits is active interrupts and set bits is inactive interrupts,
so add inverted status support to the framework.

Signed-off-by: Maxim Kochetkov <fido_max@inbox.ru>
Link: https://lore.kernel.org/r/20210525034204.5272-1-fido_max@inbox.ru
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Maxim Kochetkov 2021-05-25 06:42:03 +03:00 • committed by Mark Brown
parent b24412aff3
commit bcd23f93d3
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2 changed files with 9 additions and 0 deletions
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include/linux/regmap.h
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@ -1449,6 +1449,7 @@ struct regmap_irq_sub_irq_map {
* @not_fixed_stride: Used when chip peripherals are not laid out with fixed
* stride. Must be used with sub_reg_offsets containing the
* offsets to each peripheral.
* @status_invert: Inverted status register: cleared bits are active interrupts.
* @runtime_pm: Hold a runtime PM lock on the device when accessing it.
*
* @num_regs: Number of registers in each control bank.
@ -1501,6 +1502,7 @@ struct regmap_irq_chip {
bool type_in_mask:1;
bool clear_on_unmask:1;
bool not_fixed_stride:1;
bool status_invert:1;
int num_regs;