Merge tag 'pinctrl-for-v3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pinctrl changes from Linus Walleij:
 "These are the first and major pinctrl changes for the v3.8 merge
  cycle.  Some of this is used as merge base for other trees so I better
  be early on the trigger.

  As can be seen from the diffstat the major changes are:

  - A big conversion of the AT91 pinctrl driver and the associated ACKed
    platform changes under arch/arm/max-at91 and its device trees.  This
    has been coordinated with the AT91 maintainers to go in through the
    pinctrl tree.

  - A larger chunk of changes to the SPEAr drivers and the addition of
    the "plgpio" driver for the SPEAr as well.

  - The removal of the remnants of the Nomadik driver from the arch/arm
    tree and fusion of that into the Nomadik driver and platform data
    header files.

  - Some local movement in the Marvell MVEBU drivers, these now have
    their own subdirectory.

  - The addition of a chunk of code to gpiolib under drivers/gpio to
    register gpio-to-pin range mappings from the GPIO side of things.
    This has been requested by Grant Likely and is now implemented, it
    is particularly useful for device tree work.

  Then we have incremental updates all over the place, many of these are
  cleanups and fixes from Axel Lin who has done a great job of removing
  minor mistakes and compilation annoyances."

* tag 'pinctrl-for-v3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (114 commits)
  ARM: mmp: select PINCTRL for ARCH_MMP
  pinctrl: Drop selecting PINCONF for MMP2, PXA168 and PXA910
  pinctrl: pinctrl-single: Fix error check condition
  pinctrl: SPEAr: Update error check for unsigned variables
  gpiolib: Fix use after free in gpiochip_add_pin_range
  gpiolib: rename pin range arguments
  pinctrl: single: support gpio request and free
  pinctrl: generic: add input schmitt disable parameter
  pinctrl/u300/coh901: stop spawning pinctrl from GPIO
  pinctrl/u300/coh901: let the gpio_chip register the range
  pinctrl: add function to retrieve range from pin
  gpiolib: return any error code from range creation
  pinctrl: make range registration defer properly
  gpiolib: rename find_pinctrl_*
  gpiolib: let gpiochip_add_pin_range() specify offset
  ARM: at91: pm9g45: add mmc support
  ARM: at91: Animeo IP: add mmc support
  ARM: at91: dt: add mmc pinctrl for Atmel reference boards
  ARM: at91: dt: at91sam9: add mmc pinctrl support
  ARM: at91/dts: add nodes for atmel hsmci controllers for atmel boards
  ...

5 files changed, 306 insertions, 9 deletions

diff --git a/include/linux/gpio.h b/include/linux/gpio.h
index 2e31e8b3a190..bfe665621536 100644
--- a/include/linux/gpio.h
+++ b/include/linux/gpio.h
@@ -72,9 +72,9 @@ static inline int irq_to_gpio(unsigned int irq)
 	return -EINVAL;
 }
 
-#endif
+#endif /* ! CONFIG_ARCH_HAVE_CUSTOM_GPIO_H */
 
-#else
+#else /* ! CONFIG_GENERIC_GPIO */
 
 #include <linux/kernel.h>
 #include <linux/types.h>
@@ -231,6 +231,21 @@ static inline int irq_to_gpio(unsigned irq)
 	return -EINVAL;
 }
 
-#endif
+static inline int
+gpiochip_add_pin_range(struct gpio_chip *chip, const char *pinctl_name,
+		       unsigned int gpio_offset, unsigned int pin_offset,
+		       unsigned int npins)
+{
+	WARN_ON(1);
+	return -EINVAL;
+}
+
+static inline void
+gpiochip_remove_pin_ranges(struct gpio_chip *chip)
+{
+	WARN_ON(1);
+}
+
+#endif /* ! CONFIG_GENERIC_GPIO */
 
 #endif /* __LINUX_GPIO_H */
diff --git a/include/linux/pinctrl/pinconf-generic.h b/include/linux/pinctrl/pinconf-generic.h
index 4f0abb9f1c09..47a1bdd88878 100644
--- a/include/linux/pinctrl/pinconf-generic.h
+++ b/include/linux/pinctrl/pinconf-generic.h
@@ -46,11 +46,11 @@
  * @PIN_CONFIG_DRIVE_OPEN_SOURCE: the pin will be driven with open source
  *	(open emitter). Sending this config will enabale open drain mode, the
  *	argument is ignored.
+ * @PIN_CONFIG_INPUT_SCHMITT_DISABLE: disable schmitt-trigger mode on the pin.
  * @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. The argument zero turns the schmitt trigger
- *	off.
+ *	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 on a custom format. Setting the
@@ -74,6 +74,7 @@ enum pin_config_param {
 	PIN_CONFIG_DRIVE_PUSH_PULL,
 	PIN_CONFIG_DRIVE_OPEN_DRAIN,
 	PIN_CONFIG_DRIVE_OPEN_SOURCE,
+	PIN_CONFIG_INPUT_SCHMITT_DISABLE,
 	PIN_CONFIG_INPUT_SCHMITT,
 	PIN_CONFIG_INPUT_DEBOUNCE,
 	PIN_CONFIG_POWER_SOURCE,
diff --git a/include/linux/pinctrl/pinctrl.h b/include/linux/pinctrl/pinctrl.h
index 7d087f03e91e..04d6700d99af 100644
--- a/include/linux/pinctrl/pinctrl.h
+++ b/include/linux/pinctrl/pinctrl.h
@@ -134,6 +134,25 @@ extern void pinctrl_add_gpio_range(struct pinctrl_dev *pctldev,
 extern void pinctrl_add_gpio_ranges(struct pinctrl_dev *pctldev,
 				struct pinctrl_gpio_range *ranges,
 				unsigned nranges);
+extern void pinctrl_remove_gpio_range(struct pinctrl_dev *pctldev,
+				struct pinctrl_gpio_range *range);
+
+extern struct pinctrl_dev *pinctrl_find_and_add_gpio_range(const char *devname,
+		struct pinctrl_gpio_range *range);
+extern struct pinctrl_gpio_range *
+pinctrl_find_gpio_range_from_pin(struct pinctrl_dev *pctldev,
+				 unsigned int pin);
+
+#ifdef CONFIG_OF
+extern struct pinctrl_dev *of_pinctrl_get(struct device_node *np);
+#else
+static inline
+struct pinctrl_dev *of_pinctrl_get(struct device_node *np)
+{
+	return NULL;
+}
+#endif /* CONFIG_OF */
+
 extern const char *pinctrl_dev_get_name(struct pinctrl_dev *pctldev);
 extern void *pinctrl_dev_get_drvdata(struct pinctrl_dev *pctldev);
 #else
diff --git a/include/linux/platform_data/pinctrl-coh901.h b/include/linux/platform_data/pinctrl-coh901.h
index 30dea251b835..dfbc65d10484 100644
--- a/include/linux/platform_data/pinctrl-coh901.h
+++ b/include/linux/platform_data/pinctrl-coh901.h
@@ -13,14 +13,10 @@
  * struct u300_gpio_platform - U300 GPIO platform data
  * @ports: number of GPIO block ports
  * @gpio_base: first GPIO number for this block (use a free range)
- * @gpio_irq_base: first GPIO IRQ number for this block (use a free range)
- * @pinctrl_device: pin control device to spawn as child
  */
 struct u300_gpio_platform {
 	u8 ports;
 	int gpio_base;
-	int gpio_irq_base;
-	struct platform_device *pinctrl_device;
 };
 
 #endif /* __MACH_U300_GPIO_U300_H */
diff --git a/include/linux/platform_data/pinctrl-nomadik.h b/include/linux/platform_data/pinctrl-nomadik.h
new file mode 100644
index 000000000000..f73b2f0c55b7
--- /dev/null
+++ b/include/linux/platform_data/pinctrl-nomadik.h
@@ -0,0 +1,266 @@
+/*
+ * Structures and registers for GPIO access in the Nomadik SoC
+ *
+ * Copyright (C) 2008 STMicroelectronics
+ *     Author: Prafulla WADASKAR <prafulla.wadaskar@st.com>
+ * Copyright (C) 2009 Alessandro Rubini <rubini@unipv.it>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __PLAT_NOMADIK_GPIO
+#define __PLAT_NOMADIK_GPIO
+
+/*
+ * pin configurations are represented by 32-bit integers:
+ *
+ *	bit  0.. 8 - Pin Number (512 Pins Maximum)
+ *	bit  9..10 - Alternate Function Selection
+ *	bit 11..12 - Pull up/down state
+ *	bit     13 - Sleep mode behaviour
+ *	bit     14 - Direction
+ *	bit     15 - Value (if output)
+ *	bit 16..18 - SLPM pull up/down state
+ *	bit 19..20 - SLPM direction
+ *	bit 21..22 - SLPM Value (if output)
+ *	bit 23..25 - PDIS value (if input)
+ *	bit	26 - Gpio mode
+ *	bit	27 - Sleep mode
+ *
+ * to facilitate the definition, the following macros are provided
+ *
+ * PIN_CFG_DEFAULT - default config (0):
+ *		     pull up/down = disabled
+ *		     sleep mode = input/wakeup
+ *		     direction = input
+ *		     value = low
+ *		     SLPM direction = same as normal
+ *		     SLPM pull = same as normal
+ *		     SLPM value = same as normal
+ *
+ * PIN_CFG	   - default config with alternate function
+ */
+
+typedef unsigned long pin_cfg_t;
+
+#define PIN_NUM_MASK		0x1ff
+#define PIN_NUM(x)		((x) & PIN_NUM_MASK)
+
+#define PIN_ALT_SHIFT		9
+#define PIN_ALT_MASK		(0x3 << PIN_ALT_SHIFT)
+#define PIN_ALT(x)		(((x) & PIN_ALT_MASK) >> PIN_ALT_SHIFT)
+#define PIN_GPIO		(NMK_GPIO_ALT_GPIO << PIN_ALT_SHIFT)
+#define PIN_ALT_A		(NMK_GPIO_ALT_A << PIN_ALT_SHIFT)
+#define PIN_ALT_B		(NMK_GPIO_ALT_B << PIN_ALT_SHIFT)
+#define PIN_ALT_C		(NMK_GPIO_ALT_C << PIN_ALT_SHIFT)
+
+#define PIN_PULL_SHIFT		11
+#define PIN_PULL_MASK		(0x3 << PIN_PULL_SHIFT)
+#define PIN_PULL(x)		(((x) & PIN_PULL_MASK) >> PIN_PULL_SHIFT)
+#define PIN_PULL_NONE		(NMK_GPIO_PULL_NONE << PIN_PULL_SHIFT)
+#define PIN_PULL_UP		(NMK_GPIO_PULL_UP << PIN_PULL_SHIFT)
+#define PIN_PULL_DOWN		(NMK_GPIO_PULL_DOWN << PIN_PULL_SHIFT)
+
+#define PIN_SLPM_SHIFT		13
+#define PIN_SLPM_MASK		(0x1 << PIN_SLPM_SHIFT)
+#define PIN_SLPM(x)		(((x) & PIN_SLPM_MASK) >> PIN_SLPM_SHIFT)
+#define PIN_SLPM_MAKE_INPUT	(NMK_GPIO_SLPM_INPUT << PIN_SLPM_SHIFT)
+#define PIN_SLPM_NOCHANGE	(NMK_GPIO_SLPM_NOCHANGE << PIN_SLPM_SHIFT)
+/* These two replace the above in DB8500v2+ */
+#define PIN_SLPM_WAKEUP_ENABLE	(NMK_GPIO_SLPM_WAKEUP_ENABLE << PIN_SLPM_SHIFT)
+#define PIN_SLPM_WAKEUP_DISABLE	(NMK_GPIO_SLPM_WAKEUP_DISABLE << PIN_SLPM_SHIFT)
+#define PIN_SLPM_USE_MUX_SETTINGS_IN_SLEEP PIN_SLPM_WAKEUP_DISABLE
+
+#define PIN_SLPM_GPIO  PIN_SLPM_WAKEUP_ENABLE /* In SLPM, pin is a gpio */
+#define PIN_SLPM_ALTFUNC PIN_SLPM_WAKEUP_DISABLE /* In SLPM, pin is altfunc */
+
+#define PIN_DIR_SHIFT		14
+#define PIN_DIR_MASK		(0x1 << PIN_DIR_SHIFT)
+#define PIN_DIR(x)		(((x) & PIN_DIR_MASK) >> PIN_DIR_SHIFT)
+#define PIN_DIR_INPUT		(0 << PIN_DIR_SHIFT)
+#define PIN_DIR_OUTPUT		(1 << PIN_DIR_SHIFT)
+
+#define PIN_VAL_SHIFT		15
+#define PIN_VAL_MASK		(0x1 << PIN_VAL_SHIFT)
+#define PIN_VAL(x)		(((x) & PIN_VAL_MASK) >> PIN_VAL_SHIFT)
+#define PIN_VAL_LOW		(0 << PIN_VAL_SHIFT)
+#define PIN_VAL_HIGH		(1 << PIN_VAL_SHIFT)
+
+#define PIN_SLPM_PULL_SHIFT	16
+#define PIN_SLPM_PULL_MASK	(0x7 << PIN_SLPM_PULL_SHIFT)
+#define PIN_SLPM_PULL(x)	\
+	(((x) & PIN_SLPM_PULL_MASK) >> PIN_SLPM_PULL_SHIFT)
+#define PIN_SLPM_PULL_NONE	\
+	((1 + NMK_GPIO_PULL_NONE) << PIN_SLPM_PULL_SHIFT)
+#define PIN_SLPM_PULL_UP	\
+	((1 + NMK_GPIO_PULL_UP) << PIN_SLPM_PULL_SHIFT)
+#define PIN_SLPM_PULL_DOWN	\
+	((1 + NMK_GPIO_PULL_DOWN) << PIN_SLPM_PULL_SHIFT)
+
+#define PIN_SLPM_DIR_SHIFT	19
+#define PIN_SLPM_DIR_MASK	(0x3 << PIN_SLPM_DIR_SHIFT)
+#define PIN_SLPM_DIR(x)		\
+	(((x) & PIN_SLPM_DIR_MASK) >> PIN_SLPM_DIR_SHIFT)
+#define PIN_SLPM_DIR_INPUT	((1 + 0) << PIN_SLPM_DIR_SHIFT)
+#define PIN_SLPM_DIR_OUTPUT	((1 + 1) << PIN_SLPM_DIR_SHIFT)
+
+#define PIN_SLPM_VAL_SHIFT	21
+#define PIN_SLPM_VAL_MASK	(0x3 << PIN_SLPM_VAL_SHIFT)
+#define PIN_SLPM_VAL(x)		\
+	(((x) & PIN_SLPM_VAL_MASK) >> PIN_SLPM_VAL_SHIFT)
+#define PIN_SLPM_VAL_LOW	((1 + 0) << PIN_SLPM_VAL_SHIFT)
+#define PIN_SLPM_VAL_HIGH	((1 + 1) << PIN_SLPM_VAL_SHIFT)
+
+#define PIN_SLPM_PDIS_SHIFT		23
+#define PIN_SLPM_PDIS_MASK		(0x3 << PIN_SLPM_PDIS_SHIFT)
+#define PIN_SLPM_PDIS(x)	\
+	(((x) & PIN_SLPM_PDIS_MASK) >> PIN_SLPM_PDIS_SHIFT)
+#define PIN_SLPM_PDIS_NO_CHANGE		(0 << PIN_SLPM_PDIS_SHIFT)
+#define PIN_SLPM_PDIS_DISABLED		(1 << PIN_SLPM_PDIS_SHIFT)
+#define PIN_SLPM_PDIS_ENABLED		(2 << PIN_SLPM_PDIS_SHIFT)
+
+#define PIN_LOWEMI_SHIFT	25
+#define PIN_LOWEMI_MASK		(0x1 << PIN_LOWEMI_SHIFT)
+#define PIN_LOWEMI(x)		(((x) & PIN_LOWEMI_MASK) >> PIN_LOWEMI_SHIFT)
+#define PIN_LOWEMI_DISABLED	(0 << PIN_LOWEMI_SHIFT)
+#define PIN_LOWEMI_ENABLED	(1 << PIN_LOWEMI_SHIFT)
+
+#define PIN_GPIOMODE_SHIFT	26
+#define PIN_GPIOMODE_MASK	(0x1 << PIN_GPIOMODE_SHIFT)
+#define PIN_GPIOMODE(x)		(((x) & PIN_GPIOMODE_MASK) >> PIN_GPIOMODE_SHIFT)
+#define PIN_GPIOMODE_DISABLED	(0 << PIN_GPIOMODE_SHIFT)
+#define PIN_GPIOMODE_ENABLED	(1 << PIN_GPIOMODE_SHIFT)
+
+#define PIN_SLEEPMODE_SHIFT	27
+#define PIN_SLEEPMODE_MASK	(0x1 << PIN_SLEEPMODE_SHIFT)
+#define PIN_SLEEPMODE(x)	(((x) & PIN_SLEEPMODE_MASK) >> PIN_SLEEPMODE_SHIFT)
+#define PIN_SLEEPMODE_DISABLED	(0 << PIN_SLEEPMODE_SHIFT)
+#define PIN_SLEEPMODE_ENABLED	(1 << PIN_SLEEPMODE_SHIFT)
+
+
+/* Shortcuts.  Use these instead of separate DIR, PULL, and VAL.  */
+#define PIN_INPUT_PULLDOWN	(PIN_DIR_INPUT | PIN_PULL_DOWN)
+#define PIN_INPUT_PULLUP	(PIN_DIR_INPUT | PIN_PULL_UP)
+#define PIN_INPUT_NOPULL	(PIN_DIR_INPUT | PIN_PULL_NONE)
+#define PIN_OUTPUT_LOW		(PIN_DIR_OUTPUT | PIN_VAL_LOW)
+#define PIN_OUTPUT_HIGH		(PIN_DIR_OUTPUT | PIN_VAL_HIGH)
+
+#define PIN_SLPM_INPUT_PULLDOWN	(PIN_SLPM_DIR_INPUT | PIN_SLPM_PULL_DOWN)
+#define PIN_SLPM_INPUT_PULLUP	(PIN_SLPM_DIR_INPUT | PIN_SLPM_PULL_UP)
+#define PIN_SLPM_INPUT_NOPULL	(PIN_SLPM_DIR_INPUT | PIN_SLPM_PULL_NONE)
+#define PIN_SLPM_OUTPUT_LOW	(PIN_SLPM_DIR_OUTPUT | PIN_SLPM_VAL_LOW)
+#define PIN_SLPM_OUTPUT_HIGH	(PIN_SLPM_DIR_OUTPUT | PIN_SLPM_VAL_HIGH)
+
+#define PIN_CFG_DEFAULT		(0)
+
+#define PIN_CFG(num, alt)		\
+	(PIN_CFG_DEFAULT |\
+	 (PIN_NUM(num) | PIN_##alt))
+
+#define PIN_CFG_INPUT(num, alt, pull)		\
+	(PIN_CFG_DEFAULT |\
+	 (PIN_NUM(num) | PIN_##alt | PIN_INPUT_##pull))
+
+#define PIN_CFG_OUTPUT(num, alt, val)		\
+	(PIN_CFG_DEFAULT |\
+	 (PIN_NUM(num) | PIN_##alt | PIN_OUTPUT_##val))
+
+/*
+ * "nmk_gpio" and "NMK_GPIO" stand for "Nomadik GPIO", leaving
+ * the "gpio" namespace for generic and cross-machine functions
+ */
+
+#define GPIO_BLOCK_SHIFT 5
+#define NMK_GPIO_PER_CHIP (1 << GPIO_BLOCK_SHIFT)
+
+/* Register in the logic block */
+#define NMK_GPIO_DAT	0x00
+#define NMK_GPIO_DATS	0x04
+#define NMK_GPIO_DATC	0x08
+#define NMK_GPIO_PDIS	0x0c
+#define NMK_GPIO_DIR	0x10
+#define NMK_GPIO_DIRS	0x14
+#define NMK_GPIO_DIRC	0x18
+#define NMK_GPIO_SLPC	0x1c
+#define NMK_GPIO_AFSLA	0x20
+#define NMK_GPIO_AFSLB	0x24
+#define NMK_GPIO_LOWEMI	0x28
+
+#define NMK_GPIO_RIMSC	0x40
+#define NMK_GPIO_FIMSC	0x44
+#define NMK_GPIO_IS	0x48
+#define NMK_GPIO_IC	0x4c
+#define NMK_GPIO_RWIMSC	0x50
+#define NMK_GPIO_FWIMSC	0x54
+#define NMK_GPIO_WKS	0x58
+/* These appear in DB8540 and later ASICs */
+#define NMK_GPIO_EDGELEVEL 0x5C
+#define NMK_GPIO_LEVEL	0x60
+
+/* Alternate functions: function C is set in hw by setting both A and B */
+#define NMK_GPIO_ALT_GPIO	0
+#define NMK_GPIO_ALT_A	1
+#define NMK_GPIO_ALT_B	2
+#define NMK_GPIO_ALT_C	(NMK_GPIO_ALT_A | NMK_GPIO_ALT_B)
+
+#define NMK_GPIO_ALT_CX_SHIFT 2
+#define NMK_GPIO_ALT_C1	((1<<NMK_GPIO_ALT_CX_SHIFT) | NMK_GPIO_ALT_C)
+#define NMK_GPIO_ALT_C2	((2<<NMK_GPIO_ALT_CX_SHIFT) | NMK_GPIO_ALT_C)
+#define NMK_GPIO_ALT_C3	((3<<NMK_GPIO_ALT_CX_SHIFT) | NMK_GPIO_ALT_C)
+#define NMK_GPIO_ALT_C4	((4<<NMK_GPIO_ALT_CX_SHIFT) | NMK_GPIO_ALT_C)
+
+/* Pull up/down values */
+enum nmk_gpio_pull {
+	NMK_GPIO_PULL_NONE,
+	NMK_GPIO_PULL_UP,
+	NMK_GPIO_PULL_DOWN,
+};
+
+/* Sleep mode */
+enum nmk_gpio_slpm {
+	NMK_GPIO_SLPM_INPUT,
+	NMK_GPIO_SLPM_WAKEUP_ENABLE = NMK_GPIO_SLPM_INPUT,
+	NMK_GPIO_SLPM_NOCHANGE,
+	NMK_GPIO_SLPM_WAKEUP_DISABLE = NMK_GPIO_SLPM_NOCHANGE,
+};
+
+/* Older deprecated pin config API that should go away soon */
+extern int nmk_config_pin(pin_cfg_t cfg, bool sleep);
+extern int nmk_config_pins(pin_cfg_t *cfgs, int num);
+extern int nmk_config_pins_sleep(pin_cfg_t *cfgs, int num);
+extern int nmk_gpio_set_slpm(int gpio, enum nmk_gpio_slpm mode);
+extern int nmk_gpio_set_pull(int gpio, enum nmk_gpio_pull pull);
+#ifdef CONFIG_PINCTRL_NOMADIK
+extern int nmk_gpio_set_mode(int gpio, int gpio_mode);
+#else
+static inline int nmk_gpio_set_mode(int gpio, int gpio_mode)
+{
+	return -ENODEV;
+}
+#endif
+extern int nmk_gpio_get_mode(int gpio);
+
+extern void nmk_gpio_wakeups_suspend(void);
+extern void nmk_gpio_wakeups_resume(void);
+
+extern void nmk_gpio_clocks_enable(void);
+extern void nmk_gpio_clocks_disable(void);
+
+extern void nmk_gpio_read_pull(int gpio_bank, u32 *pull_up);
+
+/*
+ * Platform data to register a block: only the initial gpio/irq number.
+ */
+struct nmk_gpio_platform_data {
+	char *name;
+	int first_gpio;
+	int first_irq;
+	int num_gpio;
+	u32 (*get_secondary_status)(unsigned int bank);
+	void (*set_ioforce)(bool enable);
+	bool supports_sleepmode;
+};
+
+#endif /* __PLAT_NOMADIK_GPIO */