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
  ...

drivers/pinctrl/pinctrl-mcp23s08.c

@@ -25,6 +25,7 @@
 #define MCP_TYPE_008	2
 #define MCP_TYPE_017	3
 #define MCP_TYPE_S18    4
+#define MCP_TYPE_018    5
 
 #define MCP_MAX_DEV_PER_CS	8
 
@@ -278,8 +279,7 @@ static int mcp_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin,
 {
 	struct mcp23s08 *mcp = pinctrl_dev_get_drvdata(pctldev);
 	enum pin_config_param param;
-	u32 arg, mask;
-	u16 val;
+	u32 arg;
 	int ret = 0;
 	int i;
 
@@ -289,8 +289,6 @@ static int mcp_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin,
 
 		switch (param) {
 		case PIN_CONFIG_BIAS_PULL_UP:
-			val = arg ? 0xFFFF : 0x0000;
-			mask = BIT(pin);
 			ret = mcp_set_bit(mcp, MCP_GPPU, pin, arg);
 			break;
 		default:
@@ -837,6 +835,13 @@ static int mcp23s08_probe_one(struct mcp23s08 *mcp, struct device *dev,
 		mcp->chip.ngpio = 16;
 		mcp->chip.label = "mcp23017";
 		break;
+
+	case MCP_TYPE_018:
+		mcp->regmap = devm_regmap_init_i2c(data, &mcp23x17_regmap);
+		mcp->reg_shift = 1;
+		mcp->chip.ngpio = 16;
+		mcp->chip.label = "mcp23018";
+		break;
 #endif /* CONFIG_I2C */
 
 	default:
@@ -883,7 +888,7 @@ static int mcp23s08_probe_one(struct mcp23s08 *mcp, struct device *dev,
 		if (mirror)
 			status |= IOCON_MIRROR | (IOCON_MIRROR << 8);
 
-		if (type == MCP_TYPE_S18)
+		if (type == MCP_TYPE_S18 || type == MCP_TYPE_018)
 			status |= IOCON_INTCC | (IOCON_INTCC << 8);
 
 		ret = mcp_write(mcp, MCP_IOCON, status);
@@ -964,6 +969,10 @@ static const struct of_device_id mcp23s08_i2c_of_match[] = {
 		.compatible = "microchip,mcp23017",
 		.data = (void *) MCP_TYPE_017,
 	},
+	{
+		.compatible = "microchip,mcp23018",
+		.data = (void *) MCP_TYPE_018,
+	},
 /* NOTE: The use of the mcp prefix is deprecated and will be removed. */
 	{
 		.compatible = "mcp,mcp23008",
@@ -1013,6 +1022,7 @@ static int mcp230xx_probe(struct i2c_client *client,
 static const struct i2c_device_id mcp230xx_id[] = {
 	{ "mcp23008", MCP_TYPE_008 },
 	{ "mcp23017", MCP_TYPE_017 },
+	{ "mcp23018", MCP_TYPE_018 },
 	{ },
 };
 MODULE_DEVICE_TABLE(i2c, mcp230xx_id);