Merge tag 'gpio-updates-for-v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio updates from Bartosz Golaszewski:
 "We have lots of small changes all over the place, but no huge reworks
  or new drivers:

   - use ioread()/iowrite() interfaces instead of raw inb()/outb() in
     drivers

   - make irqchips immutable due to the new warning popping up when
     drivers try to modify the irqchip structures

   - add new compatibles to dt-bindings for realtek-otto, renesas-rcar
     and pca95xx

   - add support for new models to gpio-rcar, gpio-pca953x &
     gpio-realtek-otto

   - allow parsing of GPIO hogs represented as children nodes of
     gpio-uniphier

   - define a set of common GPIO consumer strings in dt-bindings

   - shrink code in gpio-ml-ioh by using more devres interfaces

   - pass arguments to devm_kcalloc() in correct order in gpio-sim

   - add new helpers for iterating over GPIO firmware nodes and
     descriptors to gpiolib core and use it in several drivers

   - drop unused syscon_regmap_lookup_by_compatible() function

   - correct format specifiers and signedness of variables in GPIO ACPI

   - drop unneeded error checks in gpio-ftgpio

   - stop using the deprecated of_gpio.h header in gpio-zevio

   - drop platform_data support in gpio-max732x

   - simplify Kconfig dependencies in gpio-vf610

   - use raw spinlocks where needed to make PREEMPT_RT happy

   - fix return values in board files using gpio-pcf857x

   - convert more drivers to using fwnode instead of of_node

   - minor fixes and improvements in gpiolib core"

* tag 'gpio-updates-for-v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (55 commits)
  gpio: sifive: Make the irqchip immutable
  gpio: rcar: Make the irqchip immutable
  gpio: pcf857x: Make the irqchip immutable
  gpio: pca953x: Make the irqchip immutable
  gpio: dwapb: Make the irqchip immutable
  gpio: sim: Use correct order for the parameters of devm_kcalloc()
  gpio: ml-ioh: Convert to use managed functions pcim* and devm_*
  gpio: ftgpio: Remove unneeded ERROR check before clk_disable_unprepare
  gpio: ws16c48: Utilize iomap interface
  gpio: gpio-mm: Utilize iomap interface
  gpio: 104-idio-16: Utilize iomap interface
  gpio: 104-idi-48: Utilize iomap interface
  gpio: 104-dio-48e: Utilize iomap interface
  gpio: zevio: drop of_gpio.h header
  gpio: max77620: Make the irqchip immutable
  dt-bindings: gpio: pca95xx: add entry for pca6408
  gpio: pca953xx: Add support for pca6408
  gpio: max732x: Drop unused support for irq and setup code via platform data
  gpio: vf610: drop the SOC_VF610 dependency for GPIO_VF610
  gpio: syscon: Remove usage of syscon_regmap_lookup_by_compatible
  ...

1 files changed, 25 insertions, 12 deletions

diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c
index 8726921a1129..b444c6ab958b 100644
--- a/drivers/gpio/gpio-pca953x.c
+++ b/drivers/gpio/gpio-pca953x.c
@@ -71,6 +71,7 @@
 #define PCA_CHIP_TYPE(x)	((x) & PCA_TYPE_MASK)
 
 static const struct i2c_device_id pca953x_id[] = {
+	{ "pca6408", 8  | PCA953X_TYPE | PCA_INT, },
 	{ "pca6416", 16 | PCA953X_TYPE | PCA_INT, },
 	{ "pca9505", 40 | PCA953X_TYPE | PCA_INT, },
 	{ "pca9506", 40 | PCA953X_TYPE | PCA_INT, },
@@ -200,7 +201,6 @@ struct pca953x_chip {
 	DECLARE_BITMAP(irq_stat, MAX_LINE);
 	DECLARE_BITMAP(irq_trig_raise, MAX_LINE);
 	DECLARE_BITMAP(irq_trig_fall, MAX_LINE);
-	struct irq_chip irq_chip;
 #endif
 	atomic_t wakeup_path;
 
@@ -628,6 +628,7 @@ static void pca953x_irq_mask(struct irq_data *d)
 	irq_hw_number_t hwirq = irqd_to_hwirq(d);
 
 	clear_bit(hwirq, chip->irq_mask);
+	gpiochip_disable_irq(gc, hwirq);
 }
 
 static void pca953x_irq_unmask(struct irq_data *d)
@@ -636,6 +637,7 @@ static void pca953x_irq_unmask(struct irq_data *d)
 	struct pca953x_chip *chip = gpiochip_get_data(gc);
 	irq_hw_number_t hwirq = irqd_to_hwirq(d);
 
+	gpiochip_enable_irq(gc, hwirq);
 	set_bit(hwirq, chip->irq_mask);
 }
 
@@ -720,6 +722,26 @@ static void pca953x_irq_shutdown(struct irq_data *d)
 	clear_bit(hwirq, chip->irq_trig_fall);
 }
 
+static void pca953x_irq_print_chip(struct irq_data *data, struct seq_file *p)
+{
+	struct gpio_chip *gc = irq_data_get_irq_chip_data(data);
+
+	seq_printf(p, dev_name(gc->parent));
+}
+
+static const struct irq_chip pca953x_irq_chip = {
+	.irq_mask		= pca953x_irq_mask,
+	.irq_unmask		= pca953x_irq_unmask,
+	.irq_set_wake		= pca953x_irq_set_wake,
+	.irq_bus_lock		= pca953x_irq_bus_lock,
+	.irq_bus_sync_unlock	= pca953x_irq_bus_sync_unlock,
+	.irq_set_type		= pca953x_irq_set_type,
+	.irq_shutdown		= pca953x_irq_shutdown,
+	.irq_print_chip		= pca953x_irq_print_chip,
+	.flags			= IRQCHIP_IMMUTABLE,
+	GPIOCHIP_IRQ_RESOURCE_HELPERS,
+};
+
 static bool pca953x_irq_pending(struct pca953x_chip *chip, unsigned long *pending)
 {
 	struct gpio_chip *gc = &chip->gpio_chip;
@@ -811,7 +833,6 @@ static irqreturn_t pca953x_irq_handler(int irq, void *devid)
 static int pca953x_irq_setup(struct pca953x_chip *chip, int irq_base)
 {
 	struct i2c_client *client = chip->client;
-	struct irq_chip *irq_chip = &chip->irq_chip;
 	DECLARE_BITMAP(reg_direction, MAX_LINE);
 	DECLARE_BITMAP(irq_stat, MAX_LINE);
 	struct gpio_irq_chip *girq;
@@ -845,17 +866,8 @@ static int pca953x_irq_setup(struct pca953x_chip *chip, int irq_base)
 	bitmap_and(chip->irq_stat, irq_stat, reg_direction, chip->gpio_chip.ngpio);
 	mutex_init(&chip->irq_lock);
 
-	irq_chip->name = dev_name(&client->dev);
-	irq_chip->irq_mask = pca953x_irq_mask;
-	irq_chip->irq_unmask = pca953x_irq_unmask;
-	irq_chip->irq_set_wake = pca953x_irq_set_wake;
-	irq_chip->irq_bus_lock = pca953x_irq_bus_lock;
-	irq_chip->irq_bus_sync_unlock = pca953x_irq_bus_sync_unlock;
-	irq_chip->irq_set_type = pca953x_irq_set_type;
-	irq_chip->irq_shutdown = pca953x_irq_shutdown;
-
 	girq = &chip->gpio_chip.irq;
-	girq->chip = irq_chip;
+	gpio_irq_chip_set_chip(girq, &pca953x_irq_chip);
 	/* This will let us handle the parent IRQ in the driver */
 	girq->parent_handler = NULL;
 	girq->num_parents = 0;
@@ -1198,6 +1210,7 @@ static int pca953x_resume(struct device *dev)
 #define OF_957X(__nrgpio, __int) (void *)(__nrgpio | PCA957X_TYPE | __int)
 
 static const struct of_device_id pca953x_dt_ids[] = {
+	{ .compatible = "nxp,pca6408", .data = OF_953X(8, PCA_INT), },
 	{ .compatible = "nxp,pca6416", .data = OF_953X(16, PCA_INT), },
 	{ .compatible = "nxp,pca9505", .data = OF_953X(40, PCA_INT), },
 	{ .compatible = "nxp,pca9506", .data = OF_953X(40, PCA_INT), },