Merge tag 'gpio-updates-for-v6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio updates from Bartosz Golaszewski:
 "Thanks to little activity in December, this is really tiny. Just a few
  updates to drivers and device-tree bindings.

  Driver improvements:
   - support a new model in gpio-mpc8xxx
   - refactor gpio-tqmx86 and add support for direction setting
   - allow building gpio-omap with COMPILE_TEST=y
   - use gpiochip_get_data() instead of dev_get_drvdata() in
     gpio-twl6040
   - drop unued field from driver data in gpio-altera
   - use generic request/free callbacks in gpio-regmap for better
     integration with pinctrl
   - use dev_err_probe() where applicable in gpio-pca953x
   - use existing dedicated GPIO defines in gpio-tps65219 instead of
     custom ones

  DT bindings:
   - document a new model in fsl,qoriq-gpio
   - explain the chip's latch clock pin and how it works like
     chip-select in fairchild,74hc595
   - enable the gpio-line-names property for gpio-brcmstb"

* tag 'gpio-updates-for-v6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
  gpio: regmap: Use generic request/free ops
  gpio: altera: Drop .mapped_irq from driver data
  gpio: mpc8xxx: Add MPC8314 support
  dt-bindings: gpio: fsl,qoriq-gpio: Add compatible string fsl,mpc8314-gpio
  dt-bindings: gpio: fairchild,74hc595: Document chip select vs. latch clock
  gpio: tps65219: Use existing kernel gpio macros
  gpio: pca953x: log an error when failing to get the reset GPIO
  dt-bindings: gpio: brcmstb: permit gpio-line-names property
  gpio: tqmx86: add support for changing GPIO directions
  gpio: tqmx86: introduce tqmx86_gpio_clrsetbits() helper
  gpio: tqmx86: use cleanup guards for spinlock
  gpio: tqmx86: consistently refer to IRQs by hwirq numbers
  gpio: tqmx86: add macros for interrupt configuration
  gpio: omap: allow building the module with COMPILE_TEST=y
  gpio: twl4030: use gpiochip_get_data

Author: torvalds

Documentation/devicetree/bindings/gpio/brcm,brcmstb-gpio.yaml

@@ -64,6 +64,10 @@ properties:
 
   gpio-ranges: true
 
+  gpio-line-names:
+    minItems: 1
+    maxItems: 128
+
   wakeup-source:
     type: boolean
     description: >

Documentation/devicetree/bindings/gpio/fairchild,74hc595.yaml

@@ -6,6 +6,23 @@ $schema: http://devicetree.org/meta-schemas/core.yaml#
 
 title: Generic 8-bit shift register
 
+description: |
+  NOTE: These chips nominally don't have a chip select pin. They do however
+  have a rising-edge triggered latch clock (or storage register clock) pin,
+  which behaves like an active-low chip select.
+
+  After the bits are shifted into the shift register, CS# is driven high, which
+  the 74HC595 sees as a rising edge on the latch clock that results in a
+  transfer of the bits from the shift register to the storage register and thus
+  to the output pins.
+                      _   _       _   _
+  shift clock    ____| |_| |_..._| |_| |_________
+
+  latch clock                           * trigger
+                 ___                     ________
+  chip select#      |___________________|
+
+
 maintainers:
   - Maxime Ripard <[email protected]>
 

Documentation/devicetree/bindings/gpio/fsl,qoriq-gpio.yaml

@@ -15,6 +15,7 @@ properties:
       - enum:
           - fsl,mpc5121-gpio
           - fsl,mpc5125-gpio
+          - fsl,mpc8314-gpio
           - fsl,mpc8349-gpio
           - fsl,mpc8572-gpio
           - fsl,mpc8610-gpio

drivers/gpio/Kconfig

@@ -529,9 +529,9 @@ config GPIO_OCTEON
 	  family of SOCs.
 
 config GPIO_OMAP
-	tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
+	tristate "TI OMAP GPIO support"
+	depends on ARCH_OMAP || COMPILE_TEST
 	default y if ARCH_OMAP
-	depends on ARM
 	select GENERIC_IRQ_CHIP
 	select GPIOLIB_IRQCHIP
 	help

drivers/gpio/gpio-altera.c

@@ -32,14 +32,12 @@
 *			  will be blocked until the current one completes.
 * @interrupt_trigger	: specifies the hardware configured IRQ trigger type
 *			  (rising, falling, both, high)
-* @mapped_irq		: kernel mapped irq number.
 */
 struct altera_gpio_chip {
 	struct gpio_chip gc;
 	void __iomem *regs;
 	raw_spinlock_t gpio_lock;
 	int interrupt_trigger;
-	int mapped_irq;
 };
 
 static void altera_gpio_irq_unmask(struct irq_data *d)
@@ -235,6 +233,7 @@ static int altera_gpio_probe(struct platform_device *pdev)
 	int reg, ret;
 	struct altera_gpio_chip *altera_gc;
 	struct gpio_irq_chip *girq;
+	int mapped_irq;
 
 	altera_gc = devm_kzalloc(&pdev->dev, sizeof(*altera_gc), GFP_KERNEL);
 	if (!altera_gc)
@@ -271,8 +270,8 @@ static int altera_gpio_probe(struct platform_device *pdev)
 	if (IS_ERR(altera_gc->regs))
 		return dev_err_probe(dev, PTR_ERR(altera_gc->regs), "failed to ioremap memory resource\n");
 
-	altera_gc->mapped_irq = platform_get_irq_optional(pdev, 0);
-	if (altera_gc->mapped_irq < 0)
+	mapped_irq = platform_get_irq_optional(pdev, 0);
+	if (mapped_irq < 0)
 		goto skip_irq;
 
 	if (device_property_read_u32(dev, "altr,interrupt-type", &reg)) {
@@ -296,7 +295,7 @@ static int altera_gpio_probe(struct platform_device *pdev)
 		return -ENOMEM;
 	girq->default_type = IRQ_TYPE_NONE;
 	girq->handler = handle_bad_irq;
-	girq->parents[0] = altera_gc->mapped_irq;
+	girq->parents[0] = mapped_irq;
 
 skip_irq:
 	ret = devm_gpiochip_add_data(dev, &altera_gc->gc, altera_gc);

drivers/gpio/gpio-mpc8xxx.c

@@ -285,6 +285,7 @@ static const struct mpc8xxx_gpio_devtype mpc8xxx_gpio_devtype_default = {
 };
 
 static const struct of_device_id mpc8xxx_gpio_ids[] = {
+	{ .compatible = "fsl,mpc8314-gpio", },
 	{ .compatible = "fsl,mpc8349-gpio", },
 	{ .compatible = "fsl,mpc8572-gpio", .data = &mpc8572_gpio_devtype, },
 	{ .compatible = "fsl,mpc8610-gpio", },

drivers/gpio/gpio-pca953x.c

@@ -1088,7 +1088,8 @@ static int pca953x_probe(struct i2c_client *client)
 		 */
 		reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
 		if (IS_ERR(reset_gpio))
-			return PTR_ERR(reset_gpio);
+			return dev_err_probe(dev, PTR_ERR(reset_gpio),
+					     "Failed to get reset gpio\n");
 	}
 
 	chip->client = client;

drivers/gpio/gpio-regmap.c

@@ -262,6 +262,8 @@ struct gpio_regmap *gpio_regmap_register(const struct gpio_regmap_config *config
 	chip->label = config->label ?: dev_name(config->parent);
 	chip->can_sleep = regmap_might_sleep(config->regmap);
 
+	chip->request = gpiochip_generic_request;
+	chip->free = gpiochip_generic_free;
 	chip->get = gpio_regmap_get;
 	if (gpio->reg_set_base && gpio->reg_clr_base)
 		chip->set = gpio_regmap_set_with_clear;

drivers/gpio/gpio-tps65219.c

@@ -15,8 +15,6 @@
 #define TPS65219_GPIO0_DIR_MASK		BIT(3)
 #define TPS65219_GPIO0_OFFSET		2
 #define TPS65219_GPIO0_IDX		0
-#define TPS65219_GPIO_DIR_IN		1
-#define TPS65219_GPIO_DIR_OUT		0
 
 struct tps65219_gpio {
 	struct gpio_chip gpio_chip;
@@ -61,7 +59,7 @@ static int tps65219_gpio_get(struct gpio_chip *gc, unsigned int offset)
 	 * status bit.
 	 */
 
-	if (tps65219_gpio_get_direction(gc, offset) == TPS65219_GPIO_DIR_OUT)
+	if (tps65219_gpio_get_direction(gc, offset) == GPIO_LINE_DIRECTION_OUT)
 		return -ENOTSUPP;
 
 	return ret;
@@ -124,10 +122,10 @@ static int tps65219_gpio_direction_input(struct gpio_chip *gc, unsigned int offs
 		return -ENOTSUPP;
 	}
 
-	if (tps65219_gpio_get_direction(gc, offset) == TPS65219_GPIO_DIR_IN)
+	if (tps65219_gpio_get_direction(gc, offset) == GPIO_LINE_DIRECTION_IN)
 		return 0;
 
-	return tps65219_gpio_change_direction(gc, offset, TPS65219_GPIO_DIR_IN);
+	return tps65219_gpio_change_direction(gc, offset, GPIO_LINE_DIRECTION_IN);
 }
 
 static int tps65219_gpio_direction_output(struct gpio_chip *gc, unsigned int offset, int value)
@@ -136,10 +134,10 @@ static int tps65219_gpio_direction_output(struct gpio_chip *gc, unsigned int off
 	if (offset != TPS65219_GPIO0_IDX)
 		return 0;
 
-	if (tps65219_gpio_get_direction(gc, offset) == TPS65219_GPIO_DIR_OUT)
+	if (tps65219_gpio_get_direction(gc, offset) == GPIO_LINE_DIRECTION_OUT)
 		return 0;
 
-	return tps65219_gpio_change_direction(gc, offset, TPS65219_GPIO_DIR_OUT);
+	return tps65219_gpio_change_direction(gc, offset, GPIO_LINE_DIRECTION_OUT);
 }
 
 static const struct gpio_chip tps65219_template_chip = {