Merge tag 'pinctrl-v4.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pin control updates from Linus Walleij:
 "This is the big bulk of pin control changes for the v4.4 kernel
  development cycle.  Development pace is high in pin control again this
  merge window.  28 contributors, 83 patches.

  It hits a few sites outside the pin control subsystem:

   - Device tree bindings in Documentation (as usual)
   - MAINTAINERS
   - drivers/base/* for the "init" state handling by Doug Anderson.
     This has been ACKed by Greg.
   - drivers/usb/renesas_usbhs/rcar2.c, for a dependent Renesas change
     in the USB subsystem.  This has been ACKed by both Greg and Felipe.
   - arch/arm/boot/dts/sama5d2.dtsi - this should ideally have gone
     through the ARM SoC tree but ended up here.

  This time I am using Geert Uytterhoeven as submaintainer for SH PFC
  since the are three-four people working in parallel with new Renesas
  ASICs.

  Summary of changes:

  Infrastructure:

   - Doug Anderson wrote a patch adding an "init" state different from
     the "default" state for pin control state handling in the core
     framework.  This is applied before the driver's probe() call if
     defined and takes precedence over "default".  If both are defined,
     "init" will be applied *before* probe() and "default" will be
     applied *after* probe().

  Significant subdriver improvements:

   - SH PFC is switched to getting GPIO ranges from the device tree
     ranges property on DT platforms.
   - Got rid of CONFIG_ARCH_SHMOBILE_LEGACY, we are all modernized.
   - Got rid of SH PFC hardcoded IRQ numbers.
   - Allwinner sunxi external interrupt through the "r" controller.
   - Moved the Cygnus driver to use DT-provided GPIO ranges.

  New drivers:

   - Atmel PIO4 pin controller for the SAMA4D2 family

  New subdrivers:

   - Rockchip RK3036 subdriver
   - Renesas SH PFC R8A7795 subdriver
   - Allwinner sunxi A83T PIO subdriver
   - Freescale i.MX7d iomux lpsr subdriver
   - Marvell Berlin BG4CT subdriver
   - SiRF Atlas 7 step B SoC subdriver
   - Intel Broxton SoC subdriver

  Apart from this, the usual slew if syntactic and semantic fixes"

* tag 'pinctrl-v4.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (81 commits)
  pinctrl: pinconf: remove needless loop
  pinctrl: uniphier: guard uniphier directory with CONFIG_PINCTRL_UNIPHIER
  pinctrl: zynq: fix UTF-8 errors
  pinctrl: zynq: Initialize early
  pinctrl: at91: add missing of_node_put
  pinctrl: tegra-xusb: Correct lane mux options
  pinctrl: intel: Add Intel Broxton pin controller support
  pinctrl: intel: Allow requesting pins which are in ACPI mode as GPIOs
  pinctrl: intel: Add support for multiple GPIO chips sharing the interrupt
  drivers/pinctrl: Add the concept of an "init" state
  pinctrl: uniphier: set input-enable before pin-muxing
  pinctrl: cygnus: Add new compatible string for gpio controller driver
  pinctrl: cygnus: Remove GPIO to Pinctrl pin mapping from driver
  pinctrl: cygnus: Optional DT property to support pin mappings
  pinctrl: sunxi: Add irq pinmuxing to sun6i "r" pincontroller
  pinctrl: sunxi: Fix irq_of_xlate for the r_pio pinctrl block
  pinctrl: sh-pfc: Remove obsolete r8a7778 platform_device_id entry
  pinctrl: sh-pfc: Remove obsolete r8a7779 platform_device_id entry
  pinctrl: sh-pfc: Stop including <linux/platform_data/gpio-rcar.h>
  usb: renesas_usbhs: Remove unneeded #include <linux/platform_data/gpio-rcar.h>
  ...

3 files changed, 50 insertions, 32 deletions

diff --git a/include/linux/pinctrl/devinfo.h b/include/linux/pinctrl/devinfo.h
index 281cb91..05082e4 100644
--- a/include/linux/pinctrl/devinfo.h
+++ b/include/linux/pinctrl/devinfo.h
@@ -24,10 +24,14 @@
  * struct dev_pin_info - pin state container for devices
  * @p: pinctrl handle for the containing device
  * @default_state: the default state for the handle, if found
+ * @init_state: the state at probe time, if found
+ * @sleep_state: the state at suspend time, if found
+ * @idle_state: the state at idle (runtime suspend) time, if found
  */
 struct dev_pin_info {
 	struct pinctrl *p;
 	struct pinctrl_state *default_state;
+	struct pinctrl_state *init_state;
 #ifdef CONFIG_PM
 	struct pinctrl_state *sleep_state;
 	struct pinctrl_state *idle_state;
@@ -35,6 +39,7 @@ struct dev_pin_info {
 };
 
 extern int pinctrl_bind_pins(struct device *dev);
+extern int pinctrl_init_done(struct device *dev);
 
 #else
 
@@ -45,5 +50,10 @@ static inline int pinctrl_bind_pins(struct device *dev)
 	return 0;
 }
 
+static inline int pinctrl_init_done(struct device *dev)
+{
+	return 0;
+}
+
 #endif /* CONFIG_PINCTRL */
 #endif /* PINCTRL_DEVINFO_H */
diff --git a/include/linux/pinctrl/pinconf-generic.h b/include/linux/pinctrl/pinconf-generic.h
index fe65962..d921afd 100644
--- a/include/linux/pinctrl/pinconf-generic.h
+++ b/include/linux/pinctrl/pinconf-generic.h
@@ -20,6 +20,11 @@
 
 /**
  * enum pin_config_param - possible pin configuration parameters
+ * @PIN_CONFIG_BIAS_BUS_HOLD: the pin will be set to weakly latch so that it
+ *	weakly drives the last value on a tristate bus, also known as a "bus
+ *	holder", "bus keeper" or "repeater". This allows another device on the
+ *	bus to change the value by driving the bus high or low and switching to
+ *	tristate. The argument is ignored.
  * @PIN_CONFIG_BIAS_DISABLE: disable any pin bias on the pin, a
  *	transition from say pull-up to pull-down implies that you disable
  *	pull-up in the process, this setting disables all biasing.
@@ -29,14 +34,6 @@
  *	if for example some other pin is going to drive the signal connected
  *	to it for a while. Pins used for input are usually always high
  *	impedance.
- * @PIN_CONFIG_BIAS_BUS_HOLD: the pin will be set to weakly latch so that it
- *	weakly drives the last value on a tristate bus, also known as a "bus
- *	holder", "bus keeper" or "repeater". This allows another device on the
- *	bus to change the value by driving the bus high or low and switching to
- *	tristate. The argument is ignored.
- * @PIN_CONFIG_BIAS_PULL_UP: the pin will be pulled up (usually with high
- *	impedance to VDD). If the argument is != 0 pull-up is enabled,
- *	if it is 0, pull-up is total, i.e. the pin is connected to VDD.
  * @PIN_CONFIG_BIAS_PULL_DOWN: the pin will be pulled down (usually with high
  *	impedance to GROUND). If the argument is != 0 pull-down is enabled,
  *	if it is 0, pull-down is total, i.e. the pin is connected to GROUND.
@@ -48,10 +45,9 @@
  *	If the argument is != 0 pull up/down is enabled, if it is 0, the
  *	configuration is ignored. The proper way to disable it is to use
  *	@PIN_CONFIG_BIAS_DISABLE.
- * @PIN_CONFIG_DRIVE_PUSH_PULL: the pin will be driven actively high and
- *	low, this is the most typical case and is typically achieved with two
- *	active transistors on the output. Setting this config will enable
- *	push-pull mode, the argument is ignored.
+ * @PIN_CONFIG_BIAS_PULL_UP: the pin will be pulled up (usually with high
+ *	impedance to VDD). If the argument is != 0 pull-up is enabled,
+ *	if it is 0, pull-up is total, i.e. the pin is connected to VDD.
  * @PIN_CONFIG_DRIVE_OPEN_DRAIN: the pin will be driven with open drain (open
  *	collector) which means it is usually wired with other output ports
  *	which are then pulled up with an external resistor. Setting this
@@ -59,28 +55,26 @@
  * @PIN_CONFIG_DRIVE_OPEN_SOURCE: the pin will be driven with open source
  *	(open emitter). Setting this config will enable open source mode, the
  *	argument is ignored.
+ * @PIN_CONFIG_DRIVE_PUSH_PULL: the pin will be driven actively high and
+ *	low, this is the most typical case and is typically achieved with two
+ *	active transistors on the output. Setting this config will enable
+ *	push-pull mode, the argument is ignored.
  * @PIN_CONFIG_DRIVE_STRENGTH: the pin will sink or source at most the current
  *	passed as argument. The argument is in mA.
+ * @PIN_CONFIG_INPUT_DEBOUNCE: this will configure the pin to debounce mode,
+ *	which means it will wait for signals to settle when reading inputs. The
+ *	argument gives the debounce time in usecs. Setting the
+ *	argument to zero turns debouncing off.
  * @PIN_CONFIG_INPUT_ENABLE: enable the pin's input.  Note that this does not
  *	affect the pin's ability to drive output.  1 enables input, 0 disables
  *	input.
- * @PIN_CONFIG_INPUT_SCHMITT_ENABLE: control schmitt-trigger mode on the pin.
- *      If the argument != 0, schmitt-trigger mode is enabled. If it's 0,
- *      schmitt-trigger mode is disabled.
  * @PIN_CONFIG_INPUT_SCHMITT: this will configure an input pin to run in
  *	schmitt-trigger mode. If the schmitt-trigger has adjustable hysteresis,
  *	the threshold value is given on a custom format as argument when
  *	setting pins to this mode.
- * @PIN_CONFIG_INPUT_DEBOUNCE: this will configure the pin to debounce mode,
- *	which means it will wait for signals to settle when reading inputs. The
- *	argument gives the debounce time in usecs. Setting the
- *	argument to zero turns debouncing off.
- * @PIN_CONFIG_POWER_SOURCE: if the pin can select between different power
- *	supplies, the argument to this parameter (on a custom format) tells
- *	the driver which alternative power source to use.
- * @PIN_CONFIG_SLEW_RATE: if the pin can select slew rate, the argument to
- *	this parameter (on a custom format) tells the driver which alternative
- *	slew rate to use.
+ * @PIN_CONFIG_INPUT_SCHMITT_ENABLE: control schmitt-trigger mode on the pin.
+ *      If the argument != 0, schmitt-trigger mode is enabled. If it's 0,
+ *      schmitt-trigger mode is disabled.
  * @PIN_CONFIG_LOW_POWER_MODE: this will configure the pin for low power
  *	operation, if several modes of operation are supported these can be
  *	passed in the argument on a custom form, else just use argument 1
@@ -89,29 +83,35 @@
  *	1 to indicate high level, argument 0 to indicate low level. (Please
  *	see Documentation/pinctrl.txt, section "GPIO mode pitfalls" for a
  *	discussion around this parameter.)
+ * @PIN_CONFIG_POWER_SOURCE: if the pin can select between different power
+ *	supplies, the argument to this parameter (on a custom format) tells
+ *	the driver which alternative power source to use.
+ * @PIN_CONFIG_SLEW_RATE: if the pin can select slew rate, the argument to
+ *	this parameter (on a custom format) tells the driver which alternative
+ *	slew rate to use.
  * @PIN_CONFIG_END: this is the last enumerator for pin configurations, if
  *	you need to pass in custom configurations to the pin controller, use
  *	PIN_CONFIG_END+1 as the base offset.
  */
 enum pin_config_param {
+	PIN_CONFIG_BIAS_BUS_HOLD,
 	PIN_CONFIG_BIAS_DISABLE,
 	PIN_CONFIG_BIAS_HIGH_IMPEDANCE,
-	PIN_CONFIG_BIAS_BUS_HOLD,
-	PIN_CONFIG_BIAS_PULL_UP,
 	PIN_CONFIG_BIAS_PULL_DOWN,
 	PIN_CONFIG_BIAS_PULL_PIN_DEFAULT,
-	PIN_CONFIG_DRIVE_PUSH_PULL,
+	PIN_CONFIG_BIAS_PULL_UP,
 	PIN_CONFIG_DRIVE_OPEN_DRAIN,
 	PIN_CONFIG_DRIVE_OPEN_SOURCE,
+	PIN_CONFIG_DRIVE_PUSH_PULL,
 	PIN_CONFIG_DRIVE_STRENGTH,
+	PIN_CONFIG_INPUT_DEBOUNCE,
 	PIN_CONFIG_INPUT_ENABLE,
-	PIN_CONFIG_INPUT_SCHMITT_ENABLE,
 	PIN_CONFIG_INPUT_SCHMITT,
-	PIN_CONFIG_INPUT_DEBOUNCE,
-	PIN_CONFIG_POWER_SOURCE,
-	PIN_CONFIG_SLEW_RATE,
+	PIN_CONFIG_INPUT_SCHMITT_ENABLE,
 	PIN_CONFIG_LOW_POWER_MODE,
 	PIN_CONFIG_OUTPUT,
+	PIN_CONFIG_POWER_SOURCE,
+	PIN_CONFIG_SLEW_RATE,
 	PIN_CONFIG_END = 0x7FFF,
 };
 
diff --git a/include/linux/pinctrl/pinctrl-state.h b/include/linux/pinctrl/pinctrl-state.h
index b5919f8..2307351 100644
--- a/include/linux/pinctrl/pinctrl-state.h
+++ b/include/linux/pinctrl/pinctrl-state.h
@@ -9,6 +9,13 @@
  *	hogs to configure muxing and pins at boot, and also as a state
  *	to go into when returning from sleep and idle in
  *	.pm_runtime_resume() or ordinary .resume() for example.
+ * @PINCTRL_STATE_INIT: normally the pinctrl will be set to "default"
+ *	before the driver's probe() function is called.  There are some
+ *	drivers where that is not appropriate becausing doing so would
+ *	glitch the pins.  In those cases you can add an "init" pinctrl
+ *	which is the state of the pins before drive probe.  After probe
+ *	if the pins are still in "init" state they'll be moved to
+ *	"default".
  * @PINCTRL_STATE_IDLE: the state the pinctrl handle shall be put into
  *	when the pins are idle. This is a state where the system is relaxed
  *	but not fully sleeping - some power may be on but clocks gated for
@@ -20,5 +27,6 @@
  *	ordinary .suspend() function.
  */
 #define PINCTRL_STATE_DEFAULT "default"
+#define PINCTRL_STATE_INIT "init"
 #define PINCTRL_STATE_IDLE "idle"
 #define PINCTRL_STATE_SLEEP "sleep"