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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
2 changed files with 9 additions and 0 deletions
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7
drivers/base/regmap/regmap-irq.c
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@@ -531,6 +531,10 @@ static irqreturn_t regmap_irq_thread(int irq, void *d)
}
}
if (chip->status_invert)
for (i = 0; i < data->chip->num_regs; i++)
data->status_buf[i] = ~data->status_buf[i];
/*
* Ignore masked IRQs and ack if we need to; we ack early so
* there is no race between handling and acknowleding the
@@ -800,6 +804,9 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode,
goto err_alloc;
}
if (chip->status_invert)
d->status_buf[i] = ~d->status_buf[i];
if (d->status_buf[i] && (chip->ack_base || chip->use_ack)) {
reg = sub_irq_reg(d, d->chip->ack_base, i);
if (chip->ack_invert)