diff options
| author | Aidan MacDonald <aidanmacdonald.0x0@gmail.com> | 2022-11-12 18:18:32 +0300 |
|---|---|---|
| committer | Lee Jones <lee@kernel.org> | 2022-12-07 16:28:15 +0300 |
| commit | c79e387389d5add7cb967d2f7622c3bf5550927b (patch) | |
| tree | c6df53d1c69881a5ef54b1a039e77f0bd4162b79 /drivers/mfd | |
| parent | 963cd957694b28e227709608467595d58fcf1605 (diff) | |
| download | linux-c79e387389d5add7cb967d2f7622c3bf5550927b.tar.xz | |
mfd: stpmic1: Fix swapped mask/unmask in irq chip
The usual behavior of mask registers is writing a '1' bit to
disable (mask) an interrupt; similarly, writing a '1' bit to
an unmask register enables (unmasks) an interrupt.
Due to a longstanding issue in regmap-irq, mask and unmask
registers were inverted when both kinds of registers were
present on the same chip, ie. regmap-irq actually wrote '1's
to the mask register to enable an IRQ and '1's to the unmask
register to disable an IRQ.
This was fixed by commit e8ffb12e7f06 ("regmap-irq: Fix
inverted handling of unmask registers") but the fix is opt-in
via mask_unmask_non_inverted = true because it requires manual
changes for each affected driver. The new behavior will become
the default once all drivers have been updated.
The STPMIC1 has a normal mask register with separate set and
clear registers. The driver intends to use the set & clear
registers with regmap-irq and has compensated for regmap-irq's
inverted behavior, and should currently be working properly.
Thus, swap mask_base and unmask_base, and opt in to the new
non-inverted behavior.
Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@gmail.com>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20221112151835.39059-16-aidanmacdonald.0x0@gmail.com
Diffstat (limited to 'drivers/mfd')
| -rw-r--r-- | drivers/mfd/stpmic1.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/mfd/stpmic1.c b/drivers/mfd/stpmic1.c index 54a4d59d1937..8db1530d9bac 100644 --- a/drivers/mfd/stpmic1.c +++ b/drivers/mfd/stpmic1.c @@ -108,8 +108,9 @@ static const struct regmap_irq stpmic1_irqs[] = { static const struct regmap_irq_chip stpmic1_regmap_irq_chip = { .name = "pmic_irq", .status_base = INT_PENDING_R1, - .mask_base = INT_CLEAR_MASK_R1, - .unmask_base = INT_SET_MASK_R1, + .mask_base = INT_SET_MASK_R1, + .unmask_base = INT_CLEAR_MASK_R1, + .mask_unmask_non_inverted = true, .ack_base = INT_CLEAR_R1, .num_regs = STPMIC1_PMIC_NUM_IRQ_REGS, .irqs = stpmic1_irqs, |