Merge tag 'gpio-pinctrl-updates-for-v6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio/pinctrl updates from Bartosz Golaszewski:
 "The bulk of it is a rework of the glue layer between pinctrl and GPIO.
  We changed the signature of GPIO helpers for pinctrl to taking the
  gpio_chip/offset pair as arguments instead of using the deprecated
  global GPIO numberspace.

  The last little bit is removing the gpiochip_find() function as it now
  has no more users in-tree.

  Summary:

   - rework the GPIO-to-pinctrl glue code to stop using the deprecated
     global GPIO numberspace

   - remove now unused wrappers around pinctrl GPIO helpers from drivers

   - remove gpiochip_find() as it has no more users"

* tag 'gpio-pinctrl-updates-for-v6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (70 commits)
  pinctrl: tegra: drop the wrapper around pinctrl_gpio_request()
  pinctrl: em: drop the wrapper around pinctrl_gpio_request()
  pinctrl: nuvoton: npcm8xx: drop wrappers around pinctrl_gpio_request/free()
  pinctrl: nuvoton: npcm7xx: drop wrappers around pinctrl_gpio_request/free()
  pinctrl: stm32: drop wrappers around pinctrl_gpio_free/input()
  pinctrl: starfive: jh7110: drop wrappers around pinctrl_gpio_request/free()
  pinctrl: starfive: jh7100: drop wrappers around pinctrl_gpio_request/free()
  pinctrl: ocelot: drop the wrapper around pinctrl_gpio_direction_input()
  pinctrl: cirrus: drop the wrapper around pinctrl_gpio_direction_input()
  pinctrl: mediatek: common: drop the wrappers around pinctrl_gpio_direction_input()
  pinctrl: mediatek: moore: drop the wrappers around pinctrl_gpio_direction_input()
  pinctrl: rk805: drop the wrapper around pinctrl_gpio_direction_input()
  pinctrl: axp209: drop the wrapper around pinctrl_gpio_direction_input()
  pinctrl: vt8500: drop the wrapper around pinctrl_gpio_direction_input()
  pinctrl: as3722: drop the wrapper around pinctrl_gpio_direction_input()
  pinctrl: ingenic: drop the wrapper around pinctrl_gpio_direction_input()
  pinctrl: st: drop the wrapper around pinctrl_gpio_direction_input()
  pinctrl: change the signature of pinctrl_ready_for_gpio_range()
  pinctrl: change the signature of gpio_to_pin()
  pinctrl: change the signature of pinctrl_match_gpio_range()
  ...

39 files changed, 198 insertions, 310 deletions

diff --git a/drivers/gpio/gpio-aspeed.c b/drivers/gpio/gpio-aspeed.c
index 58f107194fda..04c03402db6d 100644
--- a/drivers/gpio/gpio-aspeed.c
+++ b/drivers/gpio/gpio-aspeed.c
@@ -750,12 +750,12 @@ static int aspeed_gpio_request(struct gpio_chip *chip, unsigned int offset)
 	if (!have_gpio(gpiochip_get_data(chip), offset))
 		return -ENODEV;
 
-	return pinctrl_gpio_request(chip->base + offset);
+	return pinctrl_gpio_request(chip, offset);
 }
 
 static void aspeed_gpio_free(struct gpio_chip *chip, unsigned int offset)
 {
-	pinctrl_gpio_free(chip->base + offset);
+	pinctrl_gpio_free(chip, offset);
 }
 
 static int usecs_to_cycles(struct aspeed_gpio *gpio, unsigned long usecs,
@@ -973,7 +973,7 @@ static int aspeed_gpio_set_config(struct gpio_chip *chip, unsigned int offset,
 	else if (param == PIN_CONFIG_BIAS_DISABLE ||
 			param == PIN_CONFIG_BIAS_PULL_DOWN ||
 			param == PIN_CONFIG_DRIVE_STRENGTH)
-		return pinctrl_gpio_set_config(chip->base + offset, config);
+		return pinctrl_gpio_set_config(chip, offset, config);
 	else if (param == PIN_CONFIG_DRIVE_OPEN_DRAIN ||
 			param == PIN_CONFIG_DRIVE_OPEN_SOURCE)
 		/* Return -ENOTSUPP to trigger emulation, as per datasheet */
diff --git a/drivers/gpio/gpio-em.c b/drivers/gpio/gpio-em.c
index 858e6ebbb584..6c862c572322 100644
--- a/drivers/gpio/gpio-em.c
+++ b/drivers/gpio/gpio-em.c
@@ -227,14 +227,9 @@ static int em_gio_to_irq(struct gpio_chip *chip, unsigned offset)
 	return irq_create_mapping(gpio_to_priv(chip)->irq_domain, offset);
 }
 
-static int em_gio_request(struct gpio_chip *chip, unsigned offset)
-{
-	return pinctrl_gpio_request(chip->base + offset);
-}
-
 static void em_gio_free(struct gpio_chip *chip, unsigned offset)
 {
-	pinctrl_gpio_free(chip->base + offset);
+	pinctrl_gpio_free(chip, offset);
 
 	/* Set the GPIO as an input to ensure that the next GPIO request won't
 	* drive the GPIO pin as an output.
@@ -311,7 +306,7 @@ static int em_gio_probe(struct platform_device *pdev)
 	gpio_chip->direction_output = em_gio_direction_output;
 	gpio_chip->set = em_gio_set;
 	gpio_chip->to_irq = em_gio_to_irq;
-	gpio_chip->request = em_gio_request;
+	gpio_chip->request = pinctrl_gpio_request;
 	gpio_chip->free = em_gio_free;
 	gpio_chip->label = name;
 	gpio_chip->parent = dev;
diff --git a/drivers/gpio/gpio-mvebu.c b/drivers/gpio/gpio-mvebu.c
index 8f80ca8ec1ed..8342bfc2d3f9 100644
--- a/drivers/gpio/gpio-mvebu.c
+++ b/drivers/gpio/gpio-mvebu.c
@@ -346,7 +346,7 @@ static int mvebu_gpio_direction_input(struct gpio_chip *chip, unsigned int pin)
 	 * Check with the pinctrl driver whether this pin is usable as
 	 * an input GPIO
 	 */
-	ret = pinctrl_gpio_direction_input(chip->base + pin);
+	ret = pinctrl_gpio_direction_input(chip, pin);
 	if (ret)
 		return ret;
 
@@ -366,7 +366,7 @@ static int mvebu_gpio_direction_output(struct gpio_chip *chip, unsigned int pin,
 	 * Check with the pinctrl driver whether this pin is usable as
 	 * an output GPIO
 	 */
-	ret = pinctrl_gpio_direction_output(chip->base + pin);
+	ret = pinctrl_gpio_direction_output(chip, pin);
 	if (ret)
 		return ret;
 
diff --git a/drivers/gpio/gpio-pxa.c b/drivers/gpio/gpio-pxa.c
index cae9661862fe..91cea97255fa 100644
--- a/drivers/gpio/gpio-pxa.c
+++ b/drivers/gpio/gpio-pxa.c
@@ -260,7 +260,7 @@ static int pxa_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
 	int ret;
 
 	if (pxa_gpio_has_pinctrl()) {
-		ret = pinctrl_gpio_direction_input(chip->base + offset);
+		ret = pinctrl_gpio_direction_input(chip, offset);
 		if (ret)
 			return ret;
 	}
@@ -289,7 +289,7 @@ static int pxa_gpio_direction_output(struct gpio_chip *chip,
 	writel_relaxed(mask, base + (value ? GPSR_OFFSET : GPCR_OFFSET));
 
 	if (pxa_gpio_has_pinctrl()) {
-		ret = pinctrl_gpio_direction_output(chip->base + offset);
+		ret = pinctrl_gpio_direction_output(chip, offset);
 		if (ret)
 			return ret;
 	}
diff --git a/drivers/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c
index d8b1baae6357..6159fda38d5d 100644
--- a/drivers/gpio/gpio-rcar.c
+++ b/drivers/gpio/gpio-rcar.c
@@ -275,7 +275,7 @@ static int gpio_rcar_request(struct gpio_chip *chip, unsigned offset)
 		return error;
 	}
 
-	error = pinctrl_gpio_request(chip->base + offset);
+	error = pinctrl_gpio_request(chip, offset);
 	if (error)
 		pm_runtime_put(p->dev);
 
@@ -286,7 +286,7 @@ static void gpio_rcar_free(struct gpio_chip *chip, unsigned offset)
 {
 	struct gpio_rcar_priv *p = gpiochip_get_data(chip);
 
-	pinctrl_gpio_free(chip->base + offset);
+	pinctrl_gpio_free(chip, offset);
 
 	/*
 	 * Set the GPIO as an input to ensure that the next GPIO request won't
diff --git a/drivers/gpio/gpio-rockchip.c b/drivers/gpio/gpio-rockchip.c
index 23040a8cea34..0bd339813110 100644
--- a/drivers/gpio/gpio-rockchip.c
+++ b/drivers/gpio/gpio-rockchip.c
@@ -159,9 +159,9 @@ static int rockchip_gpio_set_direction(struct gpio_chip *chip,
 
 
 	if (input)
-		pinctrl_gpio_direction_input(bank->pin_base + offset);
+		pinctrl_gpio_direction_input(chip, offset);
 	else
-		pinctrl_gpio_direction_output(bank->pin_base + offset);
+		pinctrl_gpio_direction_output(chip, offset);
 
 	raw_spin_lock_irqsave(&bank->slock, flags);
 	rockchip_gpio_writel_bit(bank, offset, data, bank->gpio_regs->port_ddr);
diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c
index ea715582bcf3..ea5f9cc14bc4 100644
--- a/drivers/gpio/gpio-tegra.c
+++ b/drivers/gpio/gpio-tegra.c
@@ -137,16 +137,11 @@ static void tegra_gpio_disable(struct tegra_gpio_info *tgi, unsigned int gpio)
 	tegra_gpio_mask_write(tgi, GPIO_MSK_CNF(tgi, gpio), gpio, 0);
 }
 
-static int tegra_gpio_request(struct gpio_chip *chip, unsigned int offset)
-{
-	return pinctrl_gpio_request(chip->base + offset);
-}
-
 static void tegra_gpio_free(struct gpio_chip *chip, unsigned int offset)
 {
 	struct tegra_gpio_info *tgi = gpiochip_get_data(chip);
 
-	pinctrl_gpio_free(chip->base + offset);
+	pinctrl_gpio_free(chip, offset);
 	tegra_gpio_disable(tgi, offset);
 }
 
@@ -179,7 +174,7 @@ static int tegra_gpio_direction_input(struct gpio_chip *chip,
 	tegra_gpio_mask_write(tgi, GPIO_MSK_OE(tgi, offset), offset, 0);
 	tegra_gpio_enable(tgi, offset);
 
-	ret = pinctrl_gpio_direction_input(chip->base + offset);
+	ret = pinctrl_gpio_direction_input(chip, offset);
 	if (ret < 0)
 		dev_err(tgi->dev,
 			"Failed to set pinctrl input direction of GPIO %d: %d",
@@ -199,7 +194,7 @@ static int tegra_gpio_direction_output(struct gpio_chip *chip,
 	tegra_gpio_mask_write(tgi, GPIO_MSK_OE(tgi, offset), offset, 1);
 	tegra_gpio_enable(tgi, offset);
 
-	ret = pinctrl_gpio_direction_output(chip->base + offset);
+	ret = pinctrl_gpio_direction_output(chip, offset);
 	if (ret < 0)
 		dev_err(tgi->dev,
 			"Failed to set pinctrl output direction of GPIO %d: %d",
@@ -717,7 +712,7 @@ static int tegra_gpio_probe(struct platform_device *pdev)
 	}
 
 	tgi->gc.label			= "tegra-gpio";
-	tgi->gc.request			= tegra_gpio_request;
+	tgi->gc.request			= pinctrl_gpio_request;
 	tgi->gc.free			= tegra_gpio_free;
 	tgi->gc.direction_input		= tegra_gpio_direction_input;
 	tgi->gc.get			= tegra_gpio_get;
diff --git a/drivers/gpio/gpio-vf610.c b/drivers/gpio/gpio-vf610.c
index 444501c56a3b..07e5e6323e86 100644
--- a/drivers/gpio/gpio-vf610.c
+++ b/drivers/gpio/gpio-vf610.c
@@ -130,7 +130,7 @@ static int vf610_gpio_direction_input(struct gpio_chip *chip, unsigned gpio)
 		vf610_gpio_writel(val, port->gpio_base + GPIO_PDDR);
 	}
 
-	return pinctrl_gpio_direction_input(chip->base + gpio);
+	return pinctrl_gpio_direction_input(chip, gpio);
 }
 
 static int vf610_gpio_direction_output(struct gpio_chip *chip, unsigned gpio,
@@ -148,7 +148,7 @@ static int vf610_gpio_direction_output(struct gpio_chip *chip, unsigned gpio,
 		vf610_gpio_writel(val, port->gpio_base + GPIO_PDDR);
 	}
 
-	return pinctrl_gpio_direction_output(chip->base + gpio);
+	return pinctrl_gpio_direction_output(chip, gpio);
 }
 
 static void vf610_gpio_irq_handler(struct irq_desc *desc)
diff --git a/drivers/gpio/gpiolib-cdev.c b/drivers/gpio/gpiolib-cdev.c
index 31fc71a612c2..02ffda6c1e51 100644
--- a/drivers/gpio/gpiolib-cdev.c
+++ b/drivers/gpio/gpiolib-cdev.c
@@ -2287,8 +2287,7 @@ static void gpio_desc_to_lineinfo(struct gpio_desc *desc,
 	 * FIXME: find a non-racy way to retrieve this information. Maybe a
 	 * lock common to both frameworks?
 	 */
-	ok_for_pinctrl =
-		pinctrl_gpio_can_use_line(gc->base + info->offset);
+	ok_for_pinctrl = pinctrl_gpio_can_use_line(gc, info->offset);
 
 	spin_lock_irqsave(&gpio_lock, flags);
 
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index cbafcd95243e..95d2a7b2ea3e 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -1092,28 +1092,6 @@ void gpiochip_remove(struct gpio_chip *gc)
 }
 EXPORT_SYMBOL_GPL(gpiochip_remove);
 
-/*
- * FIXME: This will be removed soon.
- *
- * This function is depracated, don't use.
- */
-struct gpio_chip *gpiochip_find(void *data,
-				int (*match)(struct gpio_chip *gc,
-					     void *data))
-{
-	struct gpio_device *gdev;
-	struct gpio_chip *gc = NULL;
-
-	gdev = gpio_device_find(data, match);
-	if (gdev) {
-		gc = gdev->chip;
-		gpio_device_put(gdev);
-	}
-
-	return gc;
-}
-EXPORT_SYMBOL_GPL(gpiochip_find);
-
 /**
  * gpio_device_find() - find a specific GPIO device
  * @data: data to pass to match function
@@ -2036,7 +2014,7 @@ int gpiochip_generic_request(struct gpio_chip *gc, unsigned int offset)
 		return 0;
 #endif
 
-	return pinctrl_gpio_request(gc->gpiodev->base + offset);
+	return pinctrl_gpio_request(gc, offset);
 }
 EXPORT_SYMBOL_GPL(gpiochip_generic_request);
 
@@ -2052,7 +2030,7 @@ void gpiochip_generic_free(struct gpio_chip *gc, unsigned int offset)
 		return;
 #endif
 
-	pinctrl_gpio_free(gc->gpiodev->base + offset);
+	pinctrl_gpio_free(gc, offset);
 }
 EXPORT_SYMBOL_GPL(gpiochip_generic_free);
 
@@ -2065,7 +2043,7 @@ EXPORT_SYMBOL_GPL(gpiochip_generic_free);
 int gpiochip_generic_config(struct gpio_chip *gc, unsigned int offset,
 			    unsigned long config)
 {
-	return pinctrl_gpio_set_config(gc->gpiodev->base + offset, config);
+	return pinctrl_gpio_set_config(gc, offset, config);
 }
 EXPORT_SYMBOL_GPL(gpiochip_generic_config);
 
diff --git a/drivers/pinctrl/bcm/pinctrl-iproc-gpio.c b/drivers/pinctrl/bcm/pinctrl-iproc-gpio.c
index bc7bb9876e57..fd5ce52d05b1 100644
--- a/drivers/pinctrl/bcm/pinctrl-iproc-gpio.c
+++ b/drivers/pinctrl/bcm/pinctrl-iproc-gpio.c
@@ -330,24 +330,22 @@ static const struct irq_chip iproc_gpio_irq_chip = {
 static int iproc_gpio_request(struct gpio_chip *gc, unsigned offset)
 {
 	struct iproc_gpio *chip = gpiochip_get_data(gc);
-	unsigned gpio = gc->base + offset;
 
 	/* not all Iproc GPIO pins can be muxed individually */
 	if (!chip->pinmux_is_supported)
 		return 0;
 
-	return pinctrl_gpio_request(gpio);
+	return pinctrl_gpio_request(gc, offset);
 }
 
 static void iproc_gpio_free(struct gpio_chip *gc, unsigned offset)
 {
 	struct iproc_gpio *chip = gpiochip_get_data(gc);
-	unsigned gpio = gc->base + offset;
 
 	if (!chip->pinmux_is_supported)
 		return;
 
-	pinctrl_gpio_free(gpio);
+	pinctrl_gpio_free(gc, offset);
 }
 
 static int iproc_gpio_direction_input(struct gpio_chip *gc, unsigned gpio)
diff --git a/drivers/pinctrl/cirrus/pinctrl-cs42l43.c b/drivers/pinctrl/cirrus/pinctrl-cs42l43.c
index c09646318419..012b0a3bad5a 100644
--- a/drivers/pinctrl/cirrus/pinctrl-cs42l43.c
+++ b/drivers/pinctrl/cirrus/pinctrl-cs42l43.c
@@ -506,17 +506,12 @@ static void cs42l43_gpio_set(struct gpio_chip *chip, unsigned int offset, int va
 	pm_runtime_put(priv->dev);
 }
 
-static int cs42l43_gpio_direction_in(struct gpio_chip *chip, unsigned int offset)
-{
-	return pinctrl_gpio_direction_input(chip->base + offset);
-}
-
 static int cs42l43_gpio_direction_out(struct gpio_chip *chip,
 				      unsigned int offset, int value)
 {
 	cs42l43_gpio_set(chip, offset, value);
 
-	return pinctrl_gpio_direction_output(chip->base + offset);
+	return pinctrl_gpio_direction_output(chip, offset);
 }
 
 static int cs42l43_gpio_add_pin_ranges(struct gpio_chip *chip)
@@ -551,7 +546,7 @@ static int cs42l43_pin_probe(struct platform_device *pdev)
 
 	priv->gpio_chip.request = gpiochip_generic_request;
 	priv->gpio_chip.free = gpiochip_generic_free;
-	priv->gpio_chip.direction_input = cs42l43_gpio_direction_in;
+	priv->gpio_chip.direction_input = pinctrl_gpio_direction_input;
 	priv->gpio_chip.direction_output = cs42l43_gpio_direction_out;
 	priv->gpio_chip.add_pin_ranges = cs42l43_gpio_add_pin_ranges;
 	priv->gpio_chip.get = cs42l43_gpio_get;
diff --git a/drivers/pinctrl/cirrus/pinctrl-lochnagar.c b/drivers/pinctrl/cirrus/pinctrl-lochnagar.c
index 0b78cf611afe..014297a3fbd2 100644
--- a/drivers/pinctrl/cirrus/pinctrl-lochnagar.c
+++ b/drivers/pinctrl/cirrus/pinctrl-lochnagar.c
@@ -1098,7 +1098,7 @@ static int lochnagar_gpio_direction_out(struct gpio_chip *chip,
 {
 	lochnagar_gpio_set(chip, offset, value);
 
-	return pinctrl_gpio_direction_output(chip->base + offset);
+	return pinctrl_gpio_direction_output(chip, offset);
 }
 
 static int lochnagar_fill_func_groups(struct lochnagar_pin_priv *priv)
diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c
index 71fc9f95584e..1fa89be29b8f 100644
--- a/drivers/pinctrl/core.c
+++ b/drivers/pinctrl/core.c
@@ -23,6 +23,8 @@
 #include <linux/seq_file.h>
 #include <linux/slab.h>
 
+#include <linux/gpio/driver.h>
+
 #include <linux/pinctrl/consumer.h>
 #include <linux/pinctrl/devinfo.h>
 #include <linux/pinctrl/machine.h>
@@ -267,7 +269,8 @@ static int pinctrl_register_pins(struct pinctrl_dev *pctldev,
 /**
  * gpio_to_pin() - GPIO range GPIO number to pin number translation
  * @range: GPIO range used for the translation
- * @gpio: gpio pin to translate to a pin number
+ * @gc: GPIO chip structure from the GPIO subsystem
+ * @offset: hardware offset of the GPIO relative to the controller
  *
  * Finds the pin number for a given GPIO using the specified GPIO range
  * as a base for translation. The distinction between linear GPIO ranges
@@ -278,25 +281,27 @@ static int pinctrl_register_pins(struct pinctrl_dev *pctldev,
  * result of successful pinctrl_get_device_gpio_range calls)!
  */
 static inline int gpio_to_pin(struct pinctrl_gpio_range *range,
-				unsigned int gpio)
+			      struct gpio_chip *gc, unsigned int offset)
 {
-	unsigned int offset = gpio - range->base;
+	unsigned int pin = gc->base + offset - range->base;
 	if (range->pins)
-		return range->pins[offset];
+		return range->pins[pin];
 	else
-		return range->pin_base + offset;
+		return range->pin_base + pin;
 }
 
 /**
  * pinctrl_match_gpio_range() - check if a certain GPIO pin is in range
  * @pctldev: pin controller device to check
- * @gpio: gpio pin to check taken from the global GPIO pin space
+ * @gc: GPIO chip structure from the GPIO subsystem
+ * @offset: hardware offset of the GPIO relative to the controller
  *
  * Tries to match a GPIO pin number to the ranges handled by a certain pin
  * controller, return the range or NULL
  */
 static struct pinctrl_gpio_range *
-pinctrl_match_gpio_range(struct pinctrl_dev *pctldev, unsigned gpio)
+pinctrl_match_gpio_range(struct pinctrl_dev *pctldev, struct gpio_chip *gc,
+			 unsigned int offset)
 {
 	struct pinctrl_gpio_range *range;
 
@@ -304,8 +309,8 @@ pinctrl_match_gpio_range(struct pinctrl_dev *pctldev, unsigned gpio)
 	/* Loop over the ranges */
 	list_for_each_entry(range, &pctldev->gpio_ranges, node) {
 		/* Check if we're in the valid range */
-		if (gpio >= range->base &&
-		    gpio < range->base + range->npins) {
+		if ((gc->base + offset) >= range->base &&
+		    (gc->base + offset) < range->base + range->npins) {
 			mutex_unlock(&pctldev->mutex);
 			return range;
 		}
@@ -317,7 +322,8 @@ pinctrl_match_gpio_range(struct pinctrl_dev *pctldev, unsigned gpio)
 /**
  * pinctrl_ready_for_gpio_range() - check if other GPIO pins of
  * the same GPIO chip are in range
- * @gpio: gpio pin to check taken from the global GPIO pin space
+ * @gc: GPIO chip structure from the GPIO subsystem
+ * @offset: hardware offset of the GPIO relative to the controller
  *
  * This function is complement of pinctrl_match_gpio_range(). If the return
  * value of pinctrl_match_gpio_range() is NULL, this function could be used
@@ -328,19 +334,11 @@ pinctrl_match_gpio_range(struct pinctrl_dev *pctldev, unsigned gpio)
  * is false, it means that pinctrl device may not be ready.
  */
 #ifdef CONFIG_GPIOLIB
-static bool pinctrl_ready_for_gpio_range(unsigned gpio)
+static bool pinctrl_ready_for_gpio_range(struct gpio_chip *gc,
+					 unsigned int offset)
 {
 	struct pinctrl_dev *pctldev;
 	struct pinctrl_gpio_range *range = NULL;
-	/*
-	 * FIXME: "gpio" here is a number in the global GPIO numberspace.
-	 * get rid of this from the ranges eventually and get the GPIO
-	 * descriptor from the gpio_chip.
-	 */
-	struct gpio_chip *chip = gpiod_to_chip(gpio_to_desc(gpio));
-
-	if (WARN(!chip, "no gpio_chip for gpio%i?", gpio))
-		return false;
 
 	mutex_lock(&pinctrldev_list_mutex);
 
@@ -350,8 +348,8 @@ static bool pinctrl_ready_for_gpio_range(unsigned gpio)
 		mutex_lock(&pctldev->mutex);
 		list_for_each_entry(range, &pctldev->gpio_ranges, node) {
 			/* Check if any gpio range overlapped with gpio chip */
-			if (range->base + range->npins - 1 < chip->base ||
-			    range->base > chip->base + chip->ngpio - 1)
+			if (range->base + range->npins - 1 < gc->base ||
+			    range->base > gc->base + gc->ngpio - 1)
 				continue;
 			mutex_unlock(&pctldev->mutex);
 			mutex_unlock(&pinctrldev_list_mutex);
@@ -365,12 +363,17 @@ static bool pinctrl_ready_for_gpio_range(unsigned gpio)
 	return false;
 }
 #else
-static bool pinctrl_ready_for_gpio_range(unsigned gpio) { return true; }
+static inline bool
+pinctrl_ready_for_gpio_range(struct gpio_chip *gc, unsigned int offset)
+{
+	return true;
+}
 #endif
 
 /**
  * pinctrl_get_device_gpio_range() - find device for GPIO range
- * @gpio: the pin to locate the pin controller for
+ * @gc: GPIO chip structure from the GPIO subsystem
+ * @offset: hardware offset of the GPIO relative to the controller
  * @outdev: the pin control device if found
  * @outrange: the GPIO range if found
  *
@@ -379,7 +382,8 @@ static bool pinctrl_ready_for_gpio_range(unsigned gpio) { return true; }
  * -EPROBE_DEFER if the GPIO range could not be found in any device since it
  * may still have not been registered.
  */
-static int pinctrl_get_device_gpio_range(unsigned gpio,
+static int pinctrl_get_device_gpio_range(struct gpio_chip *gc,
+					 unsigned int offset,
 					 struct pinctrl_dev **outdev,
 					 struct pinctrl_gpio_range **outrange)
 {
@@ -391,7 +395,7 @@ static int pinctrl_get_device_gpio_range(unsigned gpio,
 	list_for_each_entry(pctldev, &pinctrldev_list, node) {
 		struct pinctrl_gpio_range *range;
 
-		range = pinctrl_match_gpio_range(pctldev, gpio);
+		range = pinctrl_match_gpio_range(pctldev, gc, offset);
 		if (range) {
 			*outdev = pctldev;
 			*outrange = range;
@@ -753,7 +757,7 @@ int pinctrl_get_group_selector(struct pinctrl_dev *pctldev,
 	return -EINVAL;
 }
 
-bool pinctrl_gpio_can_use_line(unsigned gpio)
+bool pinctrl_gpio_can_use_line(struct gpio_chip *gc, unsigned int offset)
 {
 	struct pinctrl_dev *pctldev;
 	struct pinctrl_gpio_range *range;
@@ -765,13 +769,13 @@ bool pinctrl_gpio_can_use_line(unsigned gpio)
 	 * we're probably dealing with GPIO driver
 	 * without a backing pin controller - bail out.
 	 */
-	if (pinctrl_get_device_gpio_range(gpio, &pctldev, &range))
+	if (pinctrl_get_device_gpio_range(gc, offset, &pctldev, &range))
 		return true;
 
 	mutex_lock(&pctldev->mutex);
 
 	/* Convert to the pin controllers number space */
-	pin = gpio_to_pin(range, gpio);
+	pin = gpio_to_pin(range, gc, offset);
 
 	result = pinmux_can_be_used_for_gpio(pctldev, pin);
 
@@ -783,22 +787,22 @@ EXPORT_SYMBOL_GPL(pinctrl_gpio_can_use_line);
 
 /**
  * pinctrl_gpio_request() - request a single pin to be used as GPIO
- * @gpio: the GPIO pin number from the GPIO subsystem number space
+ * @gc: GPIO chip structure from the GPIO subsystem
+ * @offset: hardware offset of the GPIO relative to the controller
  *
  * This function should *ONLY* be used from gpiolib-based GPIO drivers,
  * as part of their gpio_request() semantics, platforms and individual drivers
  * shall *NOT* request GPIO pins to be muxed in.
  */
-int pinctrl_gpio_request(unsigned gpio)
+int pinctrl_gpio_request(struct gpio_chip *gc, unsigned int offset)
 {
-	struct pinctrl_dev *pctldev;
 	struct pinctrl_gpio_range *range;
-	int ret;
-	int pin;
+	struct pinctrl_dev *pctldev;
+	int ret, pin;
 
-	ret = pinctrl_get_device_gpio_range(gpio, &pctldev, &range);
+	ret = pinctrl_get_device_gpio_range(gc, offset, &pctldev, &range);
 	if (ret) {
-		if (pinctrl_ready_for_gpio_range(gpio))
+		if (pinctrl_ready_for_gpio_range(gc, offset))
 			ret = 0;
 		return ret;
 	}
@@ -806,9 +810,9 @@ int pinctrl_gpio_request(unsigned gpio)
 	mutex_lock(&pctldev->mutex);
 
 	/* Convert to the pin controllers number space */
-	pin = gpio_to_pin(range, gpio);
+	pin = gpio_to_pin(range, gc, offset);
 
-	ret = pinmux_request_gpio(pctldev, range, pin, gpio);
+	ret = pinmux_request_gpio(pctldev, range, pin, gc->base + offset);
 
 	mutex_unlock(&pctldev->mutex);
 
@@ -818,27 +822,27 @@ EXPORT_SYMBOL_GPL(pinctrl_gpio_request);
 
 /**
  * pinctrl_gpio_free() - free control on a single pin, cur