Merge tag 'pinctrl-v4.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pin control updates from Linus Walleij:
 "This is the bulk of pin control changes for the v4.15 kernel cycle:

  Core:

   - The pin control Kconfig entry PINCTRL is now turned into a
     menuconfig option. This obviously has the implication of making the
     subsystem menu visible in menuconfig. This is happening because of
     two things:

      (a) Intel have started to deploy and depend on pin controllers in
          a way that is affecting users directly. This happens on the
          highly integrated laptop chipsets named after geographical
          places: baytrail, broxton, cannonlake, cedarfork, cherryview,
          denverton, geminilake, lewisburg, merrifield, sunrisepoint...
          It started a while back and now it is ever more evident that
          this is crucial infrastructure for x86 laptops and not an
          embedded obscurity anymore. Users need to be aware.

      (b) Pin control expanders on I2C and SPI that are arch-agnostic.
          Currently Semtech SX150X and Microchip MCP28x08 but more are
          expected. Users will have to be able to configure these in
          directly for their set-up.

   - Just go and select GPIOLIB now that we made sure that GPIOLIB is a
     very vanilla subsystem. Do not depend on it, if we need it, select
     it.

   - Exposing the pin control subsystem in menuconfig uncovered a bunch
     of obscure bugs that are now hopefully fixed, all more or less
     pertaining to Blackfin.

   - Unified namespace for cross-calls between pin control and GPIO.

   - New support for clock skew/delay generic DT bindings and generic
     pin config options for this.

   - Minor documentation improvements.

  Various:

   - The Renesas SH-PFC pin controller has evolved a lot. It seems
     Renesas are churning out new SoCs by the minute.

   - A bunch of non-critical fixes for the Rockchip driver.

   - Improve the use of library functions instead of open coding.

   - Support the MCP28018 variant in the MCP28x08 driver.

   - Static constifying"

* tag 'pinctrl-v4.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (91 commits)
  pinctrl: gemini: Fix missing pad descriptions
  pinctrl: Add some depends on HAS_IOMEM
  pinctrl: samsung/s3c24xx: add CONFIG_OF dependency
  pinctrl: gemini: Fix GMAC groups
  pinctrl: qcom: spmi-gpio: Add pmi8994 gpio support
  pinctrl: ti-iodelay: remove redundant unused variable dev
  pinctrl: max77620: Use common error handling code in max77620_pinconf_set()
  pinctrl: gemini: Implement clock skew/delay config
  pinctrl: gemini: Use generic DT parser
  pinctrl: Add skew-delay pin config and bindings
  pinctrl: armada-37xx: Add edge both type gpio irq support
  pinctrl: uniphier: remove eMMC hardware reset pin-mux
  pinctrl: rockchip: Add iomux-route switching support for rk3288
  pinctrl: intel: Add Intel Cedar Fork PCH pin controller support
  pinctrl: intel: Make offset to interrupt status register configurable
  pinctrl: sunxi: Enforce the strict mode by default
  pinctrl: sunxi: Disable strict mode for old pinctrl drivers
  pinctrl: sunxi: Introduce the strict flag
  pinctrl: sh-pfc: Save/restore registers for PSCI system suspend
  pinctrl: sh-pfc: r8a7796: Use generic IOCTRL register description
  ...

75 files changed, 6107 insertions, 3133 deletions

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 29fc15423299..d6a8e851ad13 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -834,15 +834,6 @@ config GPIO_PCF857X
 	  This driver provides an in-kernel interface to those GPIOs using
 	  platform-neutral GPIO calls.
 
-config GPIO_SX150X
-	bool "Semtech SX150x I2C GPIO expander (deprecated)"
-	depends on PINCTRL && I2C=y
-	select PINCTRL_SX150X
-	default n
-	help
-	  Say yes here to provide support for Semtech SX150x-series I2C
-	  GPIO expanders. The GPIO driver was replaced by a Pinctrl version.
-
 config GPIO_TPIC2810
 	tristate "TPIC2810 8-Bit I2C GPO expander"
 	help
diff --git a/drivers/gpio/gpio-aspeed.c b/drivers/gpio/gpio-aspeed.c
index 8781817d9003..6b3ca6601af2 100644
--- a/drivers/gpio/gpio-aspeed.c
+++ b/drivers/gpio/gpio-aspeed.c
@@ -539,12 +539,12 @@ static int aspeed_gpio_request(struct gpio_chip *chip, unsigned int offset)
 	if (!have_gpio(gpiochip_get_data(chip), offset))
 		return -ENODEV;
 
-	return pinctrl_request_gpio(chip->base + offset);
+	return pinctrl_gpio_request(chip->base + offset);
 }
 
 static void aspeed_gpio_free(struct gpio_chip *chip, unsigned int offset)
 {
-	pinctrl_free_gpio(chip->base + offset);
+	pinctrl_gpio_free(chip->base + offset);
 }
 
 static inline void __iomem *bank_debounce_reg(struct aspeed_gpio *gpio,
diff --git a/drivers/gpio/gpio-em.c b/drivers/gpio/gpio-em.c
index 8d32ccc980d9..b86e09e1b13b 100644
--- a/drivers/gpio/gpio-em.c
+++ b/drivers/gpio/gpio-em.c
@@ -239,12 +239,12 @@ static int em_gio_to_irq(struct gpio_chip *chip, unsigned offset)
 
 static int em_gio_request(struct gpio_chip *chip, unsigned offset)
 {
-	return pinctrl_request_gpio(chip->base + offset);
+	return pinctrl_gpio_request(chip->base + offset);
 }
 
 static void em_gio_free(struct gpio_chip *chip, unsigned offset)
 {
-	pinctrl_free_gpio(chip->base + offset);
+	pinctrl_gpio_free(chip->base + offset);
 
 	/* Set the GPIO as an input to ensure that the next GPIO request won't
 	* drive the GPIO pin as an output.
diff --git a/drivers/gpio/gpio-pxa.c b/drivers/gpio/gpio-pxa.c
index 6029899789f3..f480fb896963 100644
--- a/drivers/gpio/gpio-pxa.c
+++ b/drivers/gpio/gpio-pxa.c
@@ -330,16 +330,6 @@ static int pxa_gpio_of_xlate(struct gpio_chip *gc,
 }
 #endif
 
-static int pxa_gpio_request(struct gpio_chip *chip, unsigned int offset)
-{
-	return pinctrl_request_gpio(chip->base + offset);
-}
-
-static void pxa_gpio_free(struct gpio_chip *chip, unsigned int offset)
-{
-	pinctrl_free_gpio(chip->base + offset);
-}
-
 static int pxa_init_gpio_chip(struct pxa_gpio_chip *pchip, int ngpio,
 			      struct device_node *np, void __iomem *regbase)
 {
@@ -358,8 +348,8 @@ static int pxa_init_gpio_chip(struct pxa_gpio_chip *pchip, int ngpio,
 	pchip->chip.set = pxa_gpio_set;
 	pchip->chip.to_irq = pxa_gpio_to_irq;
 	pchip->chip.ngpio = ngpio;
-	pchip->chip.request = pxa_gpio_request;
-	pchip->chip.free = pxa_gpio_free;
+	pchip->chip.request = gpiochip_generic_request;
+	pchip->chip.free = gpiochip_generic_free;
 #ifdef CONFIG_OF_GPIO
 	pchip->chip.of_node = np;
 	pchip->chip.of_xlate = pxa_gpio_of_xlate;
diff --git a/drivers/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c
index 0ea998a3e357..e76de57dd617 100644
--- a/drivers/gpio/gpio-rcar.c
+++ b/drivers/gpio/gpio-rcar.c
@@ -250,7 +250,7 @@ static int gpio_rcar_request(struct gpio_chip *chip, unsigned offset)
 	if (error < 0)
 		return error;
 
-	error = pinctrl_request_gpio(chip->base + offset);
+	error = pinctrl_gpio_request(chip->base + offset);
 	if (error)
 		pm_runtime_put(&p->pdev->dev);
 
@@ -261,7 +261,7 @@ static void gpio_rcar_free(struct gpio_chip *chip, unsigned offset)
 {
 	struct gpio_rcar_priv *p = gpiochip_get_data(chip);
 
-	pinctrl_free_gpio(chip->base + offset);
+	pinctrl_gpio_free(chip->base + offset);
 
 	/*
 	 * Set the GPIO as an input to ensure that the next GPIO request won't
diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c
index fbaf974277df..8db47f671708 100644
--- a/drivers/gpio/gpio-tegra.c
+++ b/drivers/gpio/gpio-tegra.c
@@ -141,14 +141,14 @@ static void tegra_gpio_disable(struct tegra_gpio_info *tgi, unsigned int gpio)
 
 static int tegra_gpio_request(struct gpio_chip *chip, unsigned int offset)
 {
-	return pinctrl_request_gpio(offset);
+	return pinctrl_gpio_request(offset);
 }
 
 static void tegra_gpio_free(struct gpio_chip *chip, unsigned int offset)
 {
 	struct tegra_gpio_info *tgi = gpiochip_get_data(chip);
 
-	pinctrl_free_gpio(offset);
+	pinctrl_gpio_free(offset);
 	tegra_gpio_disable(tgi, offset);
 }
 
diff --git a/drivers/gpio/gpio-tz1090.c b/drivers/gpio/gpio-tz1090.c
index 22c5be65051f..0bb9bb583889 100644
--- a/drivers/gpio/gpio-tz1090.c
+++ b/drivers/gpio/gpio-tz1090.c
@@ -232,7 +232,7 @@ static int tz1090_gpio_request(struct gpio_chip *chip, unsigned int offset)
 	struct tz1090_gpio_bank *bank = gpiochip_get_data(chip);
 	int ret;
 
-	ret = pinctrl_request_gpio(chip->base + offset);
+	ret = pinctrl_gpio_request(chip->base + offset);
 	if (ret)
 		return ret;
 
@@ -246,7 +246,7 @@ static void tz1090_gpio_free(struct gpio_chip *chip, unsigned int offset)
 {
 	struct tz1090_gpio_bank *bank = gpiochip_get_data(chip);
 
-	pinctrl_free_gpio(chip->base + offset);
+	pinctrl_gpio_free(chip->base + offset);
 
 	tz1090_gpio_clear_bit(bank, REG_GPIO_BIT_EN, offset);
 }
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 641a5eb552cb..aad84a6306c4 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -1962,7 +1962,7 @@ static inline void gpiochip_irqchip_free_valid_mask(struct gpio_chip *gpiochip)
  */
 int gpiochip_generic_request(struct gpio_chip *chip, unsigned offset)
 {
-	return pinctrl_request_gpio(chip->gpiodev->base + offset);
+	return pinctrl_gpio_request(chip->gpiodev->base + offset);
 }
 EXPORT_SYMBOL_GPL(gpiochip_generic_request);
 
@@ -1973,7 +1973,7 @@ EXPORT_SYMBOL_GPL(gpiochip_generic_request);
  */
 void gpiochip_generic_free(struct gpio_chip *chip, unsigned offset)
 {
-	pinctrl_free_gpio(chip->gpiodev->base + offset);
+	pinctrl_gpio_free(chip->gpiodev->base + offset);
 }
 EXPORT_SYMBOL_GPL(gpiochip_generic_free);
 
diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig
index 82cd8b08d71f..4571cc098b76 100644
--- a/drivers/pinctrl/Kconfig
+++ b/drivers/pinctrl/Kconfig
@@ -2,11 +2,10 @@
 # PINCTRL infrastructure and drivers
 #
 
-config PINCTRL
-	bool
+menuconfig PINCTRL
+	bool "Pin controllers"
 
-menu "Pin controllers"
-	depends on PINCTRL
+if PINCTRL
 
 config GENERIC_PINCTRL_GROUPS
 	bool
@@ -33,7 +32,8 @@ config DEBUG_PINCTRL
 
 config PINCTRL_ADI2
 	bool "ADI pin controller driver"
-	depends on BLACKFIN
+	depends on (BF54x || BF60x)
+	depends on !GPIO_ADI
 	select PINMUX
 	select IRQ_DOMAIN
 	help
@@ -98,7 +98,8 @@ config PINCTRL_AT91PIO4
 
 config PINCTRL_AMD
 	tristate "AMD GPIO pin control"
-	depends on GPIOLIB
+	depends on HAS_IOMEM
+	select GPIOLIB
 	select GPIOLIB_IRQCHIP
 	select PINMUX
 	select PINCONF
@@ -152,12 +153,14 @@ config PINCTRL_GEMINI
 	depends on ARCH_GEMINI
 	default ARCH_GEMINI
 	select PINMUX
+	select GENERIC_PINCONF
 	select MFD_SYSCON
 
 config PINCTRL_MCP23S08
 	tristate "Microchip MCP23xxx I/O expander"
 	depends on SPI_MASTER || I2C
 	depends on I2C || I2C=n
+	select GPIOLIB
 	select GPIOLIB_IRQCHIP
 	select REGMAP_I2C if I2C
 	select REGMAP_SPI if SPI_MASTER
@@ -168,16 +171,6 @@ config PINCTRL_MCP23S08
 	  This provides a GPIO interface supporting inputs and outputs.
 	  The I2C versions of the chips can be used as interrupt-controller.
 
-config PINCTRL_MESON
-	bool
-	depends on OF
-	select PINMUX
-	select PINCONF
-	select GENERIC_PINCONF
-	select GPIOLIB
-	select OF_GPIO
-	select REGMAP_MMIO
-
 config PINCTRL_OXNAS
 	bool
 	depends on OF
@@ -210,6 +203,7 @@ config PINCTRL_RZA1
 config PINCTRL_SINGLE
 	tristate "One-register-per-pin type device tree based pinctrl driver"
 	depends on OF
+	depends on HAS_IOMEM
 	select GENERIC_PINCTRL_GROUPS
 	select GENERIC_PINMUX_FUNCTIONS
 	select GENERIC_PINCONF
@@ -226,10 +220,11 @@ config PINCTRL_SIRF
 
 config PINCTRL_SX150X
 	bool "Semtech SX150x I2C GPIO expander pinctrl driver"
-	depends on GPIOLIB && I2C=y
+	depends on I2C=y
 	select PINMUX
 	select PINCONF
 	select GENERIC_PINCONF
+	select GPIOLIB
 	select GPIOLIB_IRQCHIP
 	select REGMAP
 	help
@@ -369,6 +364,7 @@ source "drivers/pinctrl/uniphier/Kconfig"
 source "drivers/pinctrl/vt8500/Kconfig"
 source "drivers/pinctrl/mediatek/Kconfig"
 source "drivers/pinctrl/zte/Kconfig"
+source "drivers/pinctrl/meson/Kconfig"
 
 config PINCTRL_XWAY
 	bool
@@ -380,4 +376,4 @@ config PINCTRL_TB10X
 	depends on OF && ARC_PLAT_TB10X
 	select GPIOLIB
 
-endmenu
+endif
diff --git a/drivers/pinctrl/bcm/pinctrl-iproc-gpio.c b/drivers/pinctrl/bcm/pinctrl-iproc-gpio.c
index b93f62dc8733..b70058caee50 100644
--- a/drivers/pinctrl/bcm/pinctrl-iproc-gpio.c
+++ b/drivers/pinctrl/bcm/pinctrl-iproc-gpio.c
@@ -311,7 +311,7 @@ static int iproc_gpio_request(struct gpio_chip *gc, unsigned offset)
 	if (!chip->pinmux_is_supported)
 		return 0;
 
-	return pinctrl_request_gpio(gpio);
+	return pinctrl_gpio_request(gpio);
 }
 
 static void iproc_gpio_free(struct gpio_chip *gc, unsigned offset)
@@ -322,7 +322,7 @@ static void iproc_gpio_free(struct gpio_chip *gc, unsigned offset)
 	if (!chip->pinmux_is_supported)
 		return;
 
-	pinctrl_free_gpio(gpio);
+	pinctrl_gpio_free(gpio);
 }
 
 static int iproc_gpio_direction_input(struct gpio_chip *gc, unsigned gpio)
diff --git a/drivers/pinctrl/bcm/pinctrl-nsp-gpio.c b/drivers/pinctrl/bcm/pinctrl-nsp-gpio.c
index 1cfe45fd391f..e67ae52023ad 100644
--- a/drivers/pinctrl/bcm/pinctrl-nsp-gpio.c
+++ b/drivers/pinctrl/bcm/pinctrl-nsp-gpio.c
@@ -275,23 +275,6 @@ static struct irq_chip nsp_gpio_irq_chip = {
 	.irq_set_type = nsp_gpio_irq_set_type,
 };
 
-/*
- * Request the nsp IOMUX pinmux controller to mux individual pins to GPIO
- */
-static int nsp_gpio_request(struct gpio_chip *gc, unsigned offset)
-{
-	unsigned gpio = gc->base + offset;
-
-	return pinctrl_request_gpio(gpio);
-}
-
-static void nsp_gpio_free(struct gpio_chip *gc, unsigned offset)
-{
-	unsigned gpio = gc->base + offset;
-
-	pinctrl_free_gpio(gpio);
-}
-
 static int nsp_gpio_direction_input(struct gpio_chip *gc, unsigned gpio)
 {
 	struct nsp_gpio *chip = gpiochip_get_data(gc);
@@ -670,8 +653,8 @@ static int nsp_gpio_probe(struct platform_device *pdev)
 	gc->label = dev_name(dev);
 	gc->parent = dev;
 	gc->of_node = dev->of_node;
-	gc->request = nsp_gpio_request;
-	gc->free = nsp_gpio_free;
+	gc->request = gpiochip_generic_request;
+	gc->free = gpiochip_generic_free;
 	gc->direction_input = nsp_gpio_direction_input;
 	gc->direction_output = nsp_gpio_direction_output;
 	gc->set = nsp_gpio_set;
diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c
index 56fbe4c3e800..4c8d5b23e4d0 100644
--- a/drivers/pinctrl/core.c
+++ b/drivers/pinctrl/core.c
@@ -733,14 +733,14 @@ int pinctrl_get_group_selector(struct pinctrl_dev *pctldev,
 }
 
 /**
- * pinctrl_request_gpio() - request a single pin to be used as GPIO
+ * pinctrl_gpio_request() - request a single pin to be used as GPIO
  * @gpio: the GPIO pin number from the GPIO subsystem number space
  *
  * 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_request_gpio(unsigned gpio)
+int pinctrl_gpio_request(unsigned gpio)
 {
 	struct pinct