diff options
| author | Hans Verkuil <hverkuil-cisco@xs4all.nl> | 2021-12-06 16:16:47 +0300 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2021-12-16 05:42:52 +0300 |
| commit | 1a4541b68e250bc4b21bd4c6178877523c5d896b (patch) | |
| tree | 810d24bcb2208c696bbc9ead73996b970419fc60 | |
| parent | dc1b242478f47d04a41f319a14f163711c52646a (diff) | |
| download | linux-1a4541b68e250bc4b21bd4c6178877523c5d896b.tar.xz | |
pinctrl-bcm2835: don't call pinctrl_gpio_direction()
Set the direction directly without calling pinctrl_gpio_direction().
This avoids the mutex_lock() calls in that function, which would
invalid the can_sleep = false.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20211206131648.1521868-3-hverkuil-cisco@xs4all.nl
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| -rw-r--r-- | drivers/pinctrl/bcm/pinctrl-bcm2835.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/pinctrl/bcm/pinctrl-bcm2835.c b/drivers/pinctrl/bcm/pinctrl-bcm2835.c index e473fc1509d3..d8cacdaf1476 100644 --- a/drivers/pinctrl/bcm/pinctrl-bcm2835.c +++ b/drivers/pinctrl/bcm/pinctrl-bcm2835.c @@ -313,7 +313,10 @@ static inline void bcm2835_pinctrl_fsel_set( static int bcm2835_gpio_direction_input(struct gpio_chip *chip, unsigned offset) { - return pinctrl_gpio_direction_input(chip->base + offset); + struct bcm2835_pinctrl *pc = gpiochip_get_data(chip); + + bcm2835_pinctrl_fsel_set(pc, offset, BCM2835_FSEL_GPIO_IN); + return 0; } static int bcm2835_gpio_get(struct gpio_chip *chip, unsigned offset) @@ -348,8 +351,11 @@ static void bcm2835_gpio_set(struct gpio_chip *chip, unsigned offset, int value) static int bcm2835_gpio_direction_output(struct gpio_chip *chip, unsigned offset, int value) { - bcm2835_gpio_set(chip, offset, value); - return pinctrl_gpio_direction_output(chip->base + offset); + struct bcm2835_pinctrl *pc = gpiochip_get_data(chip); + + bcm2835_gpio_set_bit(pc, value ? GPSET0 : GPCLR0, offset); + bcm2835_pinctrl_fsel_set(pc, offset, BCM2835_FSEL_GPIO_OUT); + return 0; } static const struct gpio_chip bcm2835_gpio_chip = { |