Merge tag 'reset-gpio-for-v6.19' of https://git.pengutronix.de/git/pza/linux into gpio/for-next

Reset/GPIO/swnode changes for v6.19

* Extend software node implementation, allowing its properties to reference
  existing firmware nodes.
* Update the GPIO property interface to use reworked swnode macros.
* Rework reset-gpio code to use GPIO lookup via swnode.
* Fix spi-cs42l43 driver to work with swnode changes.

4 files changed, 11 insertions, 22 deletions

diff --git a/drivers/gpio/gpio-aggregator.c b/drivers/gpio/gpio-aggregator.c
index 37600faf4a4b..416f265d09d0 100644
--- a/drivers/gpio/gpio-aggregator.c
+++ b/drivers/gpio/gpio-aggregator.c
@@ -723,6 +723,7 @@ struct gpiochip_fwd *devm_gpiochip_fwd_alloc(struct device *dev,
 	chip->get_multiple = gpio_fwd_get_multiple_locked;
 	chip->set = gpio_fwd_set;
 	chip->set_multiple = gpio_fwd_set_multiple_locked;
+	chip->set_config = gpio_fwd_set_config;
 	chip->to_irq = gpio_fwd_to_irq;
 	chip->base = -1;
 	chip->ngpio = ngpios;
diff --git a/drivers/gpio/gpio-tb10x.c b/drivers/gpio/gpio-tb10x.c
index 09a448ce3eec..3c8fd322a713 100644
--- a/drivers/gpio/gpio-tb10x.c
+++ b/drivers/gpio/gpio-tb10x.c
@@ -50,25 +50,6 @@ static inline u32 tb10x_reg_read(struct tb10x_gpio *gpio, unsigned int offs)
 	return ioread32(gpio->base + offs);
 }
 
-static inline void tb10x_reg_write(struct tb10x_gpio *gpio, unsigned int offs,
-				u32 val)
-{
-	iowrite32(val, gpio->base + offs);
-}
-
-static inline void tb10x_set_bits(struct tb10x_gpio *gpio, unsigned int offs,
-				u32 mask, u32 val)
-{
-	u32 r;
-
-	guard(gpio_generic_lock_irqsave)(&gpio->chip);
-
-	r = tb10x_reg_read(gpio, offs);
-	r = (r & ~mask) | (val & mask);
-
-	tb10x_reg_write(gpio, offs, r);
-}
-
 static int tb10x_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
 {
 	struct tb10x_gpio *tb10x_gpio = gpiochip_get_data(chip);
diff --git a/drivers/gpio/gpiolib-swnode.c b/drivers/gpio/gpiolib-swnode.c
index f21dbc28cf2c..b44f35d68459 100644
--- a/drivers/gpio/gpiolib-swnode.c
+++ b/drivers/gpio/gpiolib-swnode.c
@@ -31,7 +31,7 @@ static struct gpio_device *swnode_get_gpio_device(struct fwnode_handle *fwnode)
 
 	gdev_node = to_software_node(fwnode);
 	if (!gdev_node || !gdev_node->name)
-		return ERR_PTR(-EINVAL);
+		goto fwnode_lookup;
 
 	/*
 	 * Check for a special node that identifies undefined GPIOs, this is
@@ -41,7 +41,8 @@ static struct gpio_device *swnode_get_gpio_device(struct fwnode_handle *fwnode)
 	    !strcmp(gdev_node->name, GPIOLIB_SWNODE_UNDEFINED_NAME))
 		return ERR_PTR(-ENOENT);
 
-	gdev = gpio_device_find_by_label(gdev_node->name);
+fwnode_lookup:
+	gdev = gpio_device_find_by_fwnode(fwnode);
 	return gdev ?: ERR_PTR(-EPROBE_DEFER);
 }
 
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index fb4311d41161..91e0c384f34a 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -5355,6 +5355,8 @@ static void *gpiolib_seq_start(struct seq_file *s, loff_t *pos)
 	struct gpio_device *gdev;
 	loff_t index = *pos;
 
+	s->private = NULL;
+
 	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
 	if (!priv)
 		return NULL;
@@ -5388,7 +5390,11 @@ static void *gpiolib_seq_next(struct seq_file *s, void *v, loff_t *pos)
 
 static void gpiolib_seq_stop(struct seq_file *s, void *v)
 {
-	struct gpiolib_seq_priv *priv = s->private;
+	struct gpiolib_seq_priv *priv;
+
+	priv = s->private;
+	if (!priv)
+		return;
 
 	srcu_read_unlock(&gpio_devices_srcu, priv->idx);
 	kfree(priv);