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authorPali Rohár <pali@kernel.org>2022-09-06 13:54:31 +0300
committerBartosz Golaszewski <brgl@bgdev.pl>2022-09-07 14:17:23 +0300
commit279c12df8d2efb28def9d037f288cbfb97c30fe2 (patch)
treec6eaf3cc7b491f1c7b2e31e898c2ef39cbde795d /drivers/gpio
parent7e18e42e4b280c85b76967a9106a13ca61c16179 (diff)
downloadlinux-279c12df8d2efb28def9d037f288cbfb97c30fe2.tar.xz
gpio: mpc8xxx: Fix support for IRQ_TYPE_LEVEL_LOW flow_type in mpc85xx
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>
Diffstat (limited to 'drivers/gpio')
-rw-r--r--drivers/gpio/gpio-mpc8xxx.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-mpc8xxx.c b/drivers/gpio/gpio-mpc8xxx.c
index 15049822937a..3eb08cd1fdc0 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)