Merge tag 'pwm/for-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux

Pull pwm updates from Uwe Kleine-König:
 "This contains some cleanups to the core and some mostly minor updates
  to a bunch of drivers and device tree bindings. One thing worth
  pointing out is that it contains an immutable branch containing
  support for a new mfd chip (Analog Devices ADP5585) with several sub
  drivers.

  Thanks go to Andrew Kreimer, Clark Wang, Conor Dooley, David Lechner,
  Dmitry Rokosov, Frank Li, Geert Uytterhoeven, George Stark, Jiapeng
  Chong, Krzysztof Kozlowski, Laurent Pinchart, Liao Chen, Liu Ying, Rob
  Herring and Wolfram Sang for code contributions and reviews and to Lee
  Jones for preparing the above mentioned immutable branch"

* tag 'pwm/for-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux: (21 commits)
  pwm: stm32: Fix a typo
  dt-bindings: pwm: amlogic: Add new bindings for meson A1 PWM
  dt-bindings: pwm: amlogic: Add optional power-domains
  pwm: Switch back to struct platform_driver::remove()
  dt-bindings: pwm: allwinner,sun4i-a10-pwm: add top-level constraints
  pwm: axi-pwmgen: use shared macro for version reg
  pwm: atmel-hlcdc: Drop trailing comma
  pwm: atmel-hlcdc: Enable module autoloading
  pwm: omap-dmtimer: Use of_property_read_bool()
  pwm: adp5585: Set OSC_EN bit to 1 when PWM state is enabled
  pwm: lp3943: Fix an incorrect type in lp3943_pwm_parse_dt()
  pwm: Simplify pwm_capture()
  pwm: lp3943: Use of_property_count_u32_elems() to get property length
  pwm: Don't export pwm_capture()
  pwm: Make info in traces about affected pwm more useful
  dt-bindings: pwm: renesas,tpu: Add r8a779h0 support
  dt-bindings: pwm: renesas,pwm-rcar: Add r8a779h0 support
  pwm: adp5585: Add Analog Devices ADP5585 support
  gpio: adp5585: Add Analog Devices ADP5585 support
  mfd: adp5585: Add Analog Devices ADP5585 core support
  ...

3 files changed, 237 insertions, 0 deletions

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 58f43bcced7c..d93cd4f722b4 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -1233,6 +1233,13 @@ config GPIO_ADP5520
 	  This option enables support for on-chip GPIO found
 	  on Analog Devices ADP5520 PMICs.
 
+config GPIO_ADP5585
+	tristate "GPIO Support for ADP5585"
+	depends on MFD_ADP5585
+	help
+	  This option enables support for the GPIO function found in the Analog
+	  Devices ADP5585.
+
 config GPIO_ALTERA_A10SR
 	tristate "Altera Arria10 System Resource GPIO"
 	depends on MFD_ALTERA_A10SR
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index 64dd6d9d730d..1429e8c0229b 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -26,6 +26,7 @@ obj-$(CONFIG_GPIO_74X164)		+= gpio-74x164.o
 obj-$(CONFIG_GPIO_74XX_MMIO)		+= gpio-74xx-mmio.o
 obj-$(CONFIG_GPIO_ADNP)			+= gpio-adnp.o
 obj-$(CONFIG_GPIO_ADP5520)		+= gpio-adp5520.o
+obj-$(CONFIG_GPIO_ADP5585)		+= gpio-adp5585.o
 obj-$(CONFIG_GPIO_AGGREGATOR)		+= gpio-aggregator.o
 obj-$(CONFIG_GPIO_ALTERA_A10SR)		+= gpio-altera-a10sr.o
 obj-$(CONFIG_GPIO_ALTERA)  		+= gpio-altera.o
diff --git a/drivers/gpio/gpio-adp5585.c b/drivers/gpio/gpio-adp5585.c
new file mode 100644
index 000000000000..000d31f09671
--- /dev/null
+++ b/drivers/gpio/gpio-adp5585.c
@@ -0,0 +1,229 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Analog Devices ADP5585 GPIO driver
+ *
+ * Copyright 2022 NXP
+ * Copyright 2024 Ideas on Board Oy
+ */
+
+#include <linux/device.h>
+#include <linux/gpio/driver.h>
+#include <linux/mfd/adp5585.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/types.h>
+
+#define ADP5585_GPIO_MAX	11
+
+struct adp5585_gpio_dev {
+	struct gpio_chip gpio_chip;
+	struct regmap *regmap;
+};
+
+static int adp5585_gpio_get_direction(struct gpio_chip *chip, unsigned int off)
+{
+	struct adp5585_gpio_dev *adp5585_gpio = gpiochip_get_data(chip);
+	unsigned int bank = ADP5585_BANK(off);
+	unsigned int bit = ADP5585_BIT(off);
+	unsigned int val;
+
+	regmap_read(adp5585_gpio->regmap, ADP5585_GPIO_DIRECTION_A + bank, &val);
+
+	return val & bit ? GPIO_LINE_DIRECTION_OUT : GPIO_LINE_DIRECTION_IN;
+}
+
+static int adp5585_gpio_direction_input(struct gpio_chip *chip, unsigned int off)
+{
+	struct adp5585_gpio_dev *adp5585_gpio = gpiochip_get_data(chip);
+	unsigned int bank = ADP5585_BANK(off);
+	unsigned int bit = ADP5585_BIT(off);
+
+	return regmap_clear_bits(adp5585_gpio->regmap,
+				 ADP5585_GPIO_DIRECTION_A + bank, bit);
+}
+
+static int adp5585_gpio_direction_output(struct gpio_chip *chip, unsigned int off, int val)
+{
+	struct adp5585_gpio_dev *adp5585_gpio = gpiochip_get_data(chip);
+	unsigned int bank = ADP5585_BANK(off);
+	unsigned int bit = ADP5585_BIT(off);
+	int ret;
+
+	ret = regmap_update_bits(adp5585_gpio->regmap,
+				 ADP5585_GPO_DATA_OUT_A + bank, bit,
+				 val ? bit : 0);
+	if (ret)
+		return ret;
+
+	return regmap_set_bits(adp5585_gpio->regmap,
+			       ADP5585_GPIO_DIRECTION_A + bank, bit);
+}
+
+static int adp5585_gpio_get_value(struct gpio_chip *chip, unsigned int off)
+{
+	struct adp5585_gpio_dev *adp5585_gpio = gpiochip_get_data(chip);
+	unsigned int bank = ADP5585_BANK(off);
+	unsigned int bit = ADP5585_BIT(off);
+	unsigned int reg;
+	unsigned int val;
+
+	/*
+	 * The input status register doesn't reflect the pin state when the
+	 * GPIO is configured as an output. Check the direction, and read the
+	 * input status from GPI_STATUS or output value from GPO_DATA_OUT
+	 * accordingly.
+	 *
+	 * We don't need any locking, as concurrent access to the same GPIO
+	 * isn't allowed by the GPIO API, so there's no risk of the
+	 * .direction_input(), .direction_output() or .set() operations racing
+	 * with this.
+	 */
+	regmap_read(adp5585_gpio->regmap, ADP5585_GPIO_DIRECTION_A + bank, &val);
+	reg = val & bit ? ADP5585_GPO_DATA_OUT_A : ADP5585_GPI_STATUS_A;
+	regmap_read(adp5585_gpio->regmap, reg + bank, &val);
+
+	return !!(val & bit);
+}
+
+static void adp5585_gpio_set_value(struct gpio_chip *chip, unsigned int off, int val)
+{
+	struct adp5585_gpio_dev *adp5585_gpio = gpiochip_get_data(chip);
+	unsigned int bank = ADP5585_BANK(off);
+	unsigned int bit = ADP5585_BIT(off);
+
+	regmap_update_bits(adp5585_gpio->regmap, ADP5585_GPO_DATA_OUT_A + bank,
+			   bit, val ? bit : 0);
+}
+
+static int adp5585_gpio_set_bias(struct adp5585_gpio_dev *adp5585_gpio,
+				 unsigned int off, unsigned int bias)
+{
+	unsigned int bit, reg, mask, val;
+
+	/*
+	 * The bias configuration fields are 2 bits wide and laid down in
+	 * consecutive registers ADP5585_RPULL_CONFIG_*, with a hole of 4 bits
+	 * after R5.
+	 */
+	bit = off * 2 + (off > 5 ? 4 : 0);
+	reg = ADP5585_RPULL_CONFIG_A + bit / 8;
+	mask = ADP5585_Rx_PULL_CFG_MASK << (bit % 8);
+	val = bias << (bit % 8);
+
+	return regmap_update_bits(adp5585_gpio->regmap, reg, mask, val);
+}
+
+static int adp5585_gpio_set_drive(struct adp5585_gpio_dev *adp5585_gpio,
+				  unsigned int off, enum pin_config_param drive)
+{
+	unsigned int bank = ADP5585_BANK(off);
+	unsigned int bit = ADP5585_BIT(off);
+
+	return regmap_update_bits(adp5585_gpio->regmap,
+				  ADP5585_GPO_OUT_MODE_A + bank, bit,
+				  drive == PIN_CONFIG_DRIVE_OPEN_DRAIN ? bit : 0);
+}
+
+static int adp5585_gpio_set_debounce(struct adp5585_gpio_dev *adp5585_gpio,
+				     unsigned int off, unsigned int debounce)
+{
+	unsigned int bank = ADP5585_BANK(off);
+	unsigned int bit = ADP5585_BIT(off);
+
+	return regmap_update_bits(adp5585_gpio->regmap,
+				  ADP5585_DEBOUNCE_DIS_A + bank, bit,
+				  debounce ? 0 : bit);
+}
+
+static int adp5585_gpio_set_config(struct gpio_chip *chip, unsigned int off,
+				   unsigned long config)
+{
+	struct adp5585_gpio_dev *adp5585_gpio = gpiochip_get_data(chip);
+	enum pin_config_param param = pinconf_to_config_param(config);
+	u32 arg = pinconf_to_config_argument(config);
+
+	switch (param) {
+	case PIN_CONFIG_BIAS_DISABLE:
+		return adp5585_gpio_set_bias(adp5585_gpio, off,
+					     ADP5585_Rx_PULL_CFG_DISABLE);
+
+	case PIN_CONFIG_BIAS_PULL_DOWN:
+		return adp5585_gpio_set_bias(adp5585_gpio, off, arg ?
+					     ADP5585_Rx_PULL_CFG_PD_300K :
+					     ADP5585_Rx_PULL_CFG_DISABLE);
+
+	case PIN_CONFIG_BIAS_PULL_UP:
+		return adp5585_gpio_set_bias(adp5585_gpio, off, arg ?
+					     ADP5585_Rx_PULL_CFG_PU_300K :
+					     ADP5585_Rx_PULL_CFG_DISABLE);
+
+	case PIN_CONFIG_DRIVE_OPEN_DRAIN:
+	case PIN_CONFIG_DRIVE_PUSH_PULL:
+		return adp5585_gpio_set_drive(adp5585_gpio, off, param);
+
+	case PIN_CONFIG_INPUT_DEBOUNCE:
+		return adp5585_gpio_set_debounce(adp5585_gpio, off, arg);
+
+	default:
+		return -ENOTSUPP;
+	};
+}
+
+static int adp5585_gpio_probe(struct platform_device *pdev)
+{
+	struct adp5585_dev *adp5585 = dev_get_drvdata(pdev->dev.parent);
+	struct adp5585_gpio_dev *adp5585_gpio;
+	struct device *dev = &pdev->dev;
+	struct gpio_chip *gc;
+	int ret;
+
+	adp5585_gpio = devm_kzalloc(dev, sizeof(*adp5585_gpio), GFP_KERNEL);
+	if (!adp5585_gpio)
+		return -ENOMEM;
+
+	adp5585_gpio->regmap = adp5585->regmap;
+
+	device_set_of_node_from_dev(dev, dev->parent);
+
+	gc = &adp5585_gpio->gpio_chip;
+	gc->parent = dev;
+	gc->get_direction = adp5585_gpio_get_direction;
+	gc->direction_input = adp5585_gpio_direction_input;
+	gc->direction_output = adp5585_gpio_direction_output;
+	gc->get = adp5585_gpio_get_value;
+	gc->set = adp5585_gpio_set_value;
+	gc->set_config = adp5585_gpio_set_config;
+	gc->can_sleep = true;
+
+	gc->base = -1;
+	gc->ngpio = ADP5585_GPIO_MAX;
+	gc->label = pdev->name;
+	gc->owner = THIS_MODULE;
+
+	ret = devm_gpiochip_add_data(dev, &adp5585_gpio->gpio_chip,
+				     adp5585_gpio);
+	if (ret)
+		return dev_err_probe(dev, ret, "failed to add GPIO chip\n");
+
+	return 0;
+}
+
+static const struct platform_device_id adp5585_gpio_id_table[] = {
+	{ "adp5585-gpio" },
+	{ /* Sentinel */ }
+};
+MODULE_DEVICE_TABLE(platform, adp5585_gpio_id_table);
+
+static struct platform_driver adp5585_gpio_driver = {
+	.driver	= {
+		.name = "adp5585-gpio",
+	},
+	.probe = adp5585_gpio_probe,
+	.id_table = adp5585_gpio_id_table,
+};
+module_platform_driver(adp5585_gpio_driver);
+
+MODULE_AUTHOR("Haibo Chen <haibo.chen@nxp.com>");
+MODULE_DESCRIPTION("GPIO ADP5585 Driver");
+MODULE_LICENSE("GPL");