diff options
| author | Pali Rohár <pali@kernel.org> | 2022-09-06 13:54:31 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-09-23 15:16:57 +0300 |
| commit | 24196210b198e8e39296e277bb93b362aa207775 (patch) | |
| tree | 8a5457f5d4fc4153bb8b936924b641a7c1f97f85 /drivers/gpio | |
| parent | 4d065f83565858fd433e1abbda2fc0fda3ac4a87 (diff) | |
| download | linux-24196210b198e8e39296e277bb93b362aa207775.tar.xz | |
gpio: mpc8xxx: Fix support for IRQ_TYPE_LEVEL_LOW flow_type in mpc85xx
[ Upstream commit 279c12df8d2efb28def9d037f288cbfb97c30fe2 ]
Commit e39d5ef67804 ("powerpc/5xxx: extend mpc8xxx_gpio driver to support
mpc512x gpios") implemented support for IRQ_TYPE_LEVEL_LOW flow type in
mpc512x via falling edge type. Do same for mpc85xx which support was added
in commit 345e5c8a1cc3 ("powerpc: Add interrupt support to mpc8xxx_gpio").
Fixes probing of lm90 hwmon driver on mpc85xx based board which use level
interrupt. Without it kernel prints error and refuse lm90 to work:
[ 15.258370] genirq: Setting trigger mode 8 for irq 49 failed (mpc8xxx_irq_set_type+0x0/0xf8)
[ 15.267168] lm90 0-004c: cannot request IRQ 49
[ 15.272708] lm90: probe of 0-004c failed with error -22
Fixes: 345e5c8a1cc3 ("powerpc: Add interrupt support to mpc8xxx_gpio")
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpio-mpc8xxx.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-mpc8xxx.c b/drivers/gpio/gpio-mpc8xxx.c index d60d5520707d..60c2533a39a5 100644 --- a/drivers/gpio/gpio-mpc8xxx.c +++ b/drivers/gpio/gpio-mpc8xxx.c @@ -169,6 +169,7 @@ static int mpc8xxx_irq_set_type(struct irq_data *d, unsigned int flow_type) switch (flow_type) { case IRQ_TYPE_EDGE_FALLING: + case IRQ_TYPE_LEVEL_LOW: raw_spin_lock_irqsave(&mpc8xxx_gc->lock, flags); gc->write_reg(mpc8xxx_gc->regs + GPIO_ICR, gc->read_reg(mpc8xxx_gc->regs + GPIO_ICR) |