[RFC PATCH 2/3] pinctrl-bcm2835: don't call pinctrl_gpio_direction()

[Hans Verkuil <hverkuil-cisco@xxxxxxxxx>]

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@xxxxxxxxx>
---
 drivers/pinctrl/bcm/pinctrl-bcm2835.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/drivers/pinctrl/bcm/pinctrl-bcm2835.c b/drivers/pinctrl/bcm/pinctrl-bcm2835.c
index 2abcc6ce4eba..2f51fc3b24eb 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 = {
-- 
2.33.0