[linux-2.6-block.git] / drivers / gpio / gpiolib.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Internal GPIO functions.
 *
 * Copyright (C) 2013, Intel Corporation
 * Author: Mika Westerberg <mika.westerberg@linux.intel.com>
 */

#ifndef GPIOLIB_H
#define GPIOLIB_H

#include <linux/gpio/driver.h>
#include <linux/gpio/consumer.h> /* for enum gpiod_flags */
#include <linux/err.h>
#include <linux/device.h>
#include <linux/module.h>
#include <linux/cdev.h>

enum of_gpio_flags;
enum gpio_lookup_flags;
struct acpi_device;

/**
 * struct gpio_device - internal state container for GPIO devices
 * @id: numerical ID number for the GPIO chip
 * @dev: the GPIO device struct
 * @chrdev: character device for the GPIO device
 * @mockdev: class device used by the deprecated sysfs interface (may be
 * NULL)
 * @owner: helps prevent removal of modules exporting active GPIOs
 * @chip: pointer to the corresponding gpiochip, holding static
 * data for this device
 * @descs: array of ngpio descriptors.
 * @ngpio: the number of GPIO lines on this GPIO device, equal to the size
 * of the @descs array.
 * @base: GPIO base in the DEPRECATED global Linux GPIO numberspace, assigned
 * at device creation time.
 * @label: a descriptive name for the GPIO device, such as the part number
 * or name of the IP component in a System on Chip.
 * @data: per-instance data assigned by the driver
 * @list: links gpio_device:s together for traversal
 *
 * This state container holds most of the runtime variable data
 * for a GPIO device and can hold references and live on after the
 * GPIO chip has been removed, if it is still being used from
 * userspace.
 */
struct gpio_device {
	int			id;
	struct device		dev;
	struct cdev		chrdev;
	struct device		*mockdev;
	struct module		*owner;
	struct gpio_chip	*chip;
	struct gpio_desc	*descs;
	int			base;
	u16			ngpio;
	const char		*label;
	void			*data;
	struct list_head        list;

#ifdef CONFIG_PINCTRL
	/*
	 * If CONFIG_PINCTRL is enabled, then gpio controllers can optionally
	 * describe the actual pin range which they serve in an SoC. This
	 * information would be used by pinctrl subsystem to configure
	 * corresponding pins for gpio usage.
	 */
	struct list_head pin_ranges;
#endif
};

/**
 * struct acpi_gpio_info - ACPI GPIO specific information
 * @adev: reference to ACPI device which consumes GPIO resource
 * @flags: GPIO initialization flags
 * @gpioint: if %true this GPIO is of type GpioInt otherwise type is GpioIo
 * @polarity: interrupt polarity as provided by ACPI
 * @triggering: triggering type as provided by ACPI
 * @quirks: Linux specific quirks as provided by struct acpi_gpio_mapping
 */
struct acpi_gpio_info {
	struct acpi_device *adev;
	enum gpiod_flags flags;
	bool gpioint;
	int polarity;
	int triggering;
	unsigned int quirks;
};

/* gpio suffixes used for ACPI and device tree lookup */
static __maybe_unused const char * const gpio_suffixes[] = { "gpios", "gpio" };

#ifdef CONFIG_OF_GPIO
struct gpio_desc *of_find_gpio(struct device *dev,
			       const char *con_id,
			       unsigned int idx,
			       enum gpio_lookup_flags *flags);
struct gpio_desc *of_get_named_gpiod_flags(struct device_node *np,
		   const char *list_name, int index, enum of_gpio_flags *flags);
int of_gpiochip_add(struct gpio_chip *gc);
void of_gpiochip_remove(struct gpio_chip *gc);
#else
static inline struct gpio_desc *of_find_gpio(struct device *dev,
					     const char *con_id,
					     unsigned int idx,
					     enum gpio_lookup_flags *flags)
{
	return ERR_PTR(-ENOENT);
}
static inline struct gpio_desc *of_get_named_gpiod_flags(struct device_node *np,
		   const char *list_name, int index, enum of_gpio_flags *flags)
{
	return ERR_PTR(-ENOENT);
}
static inline int of_gpiochip_add(struct gpio_chip *gc) { return 0; }
static inline void of_gpiochip_remove(struct gpio_chip *gc) { }
#endif /* CONFIG_OF_GPIO */

#ifdef CONFIG_ACPI
void acpi_gpiochip_add(struct gpio_chip *chip);
void acpi_gpiochip_remove(struct gpio_chip *chip);

void acpi_gpiochip_request_interrupts(struct gpio_chip *chip);
void acpi_gpiochip_free_interrupts(struct gpio_chip *chip);

int acpi_gpio_update_gpiod_flags(enum gpiod_flags *flags,
				 struct acpi_gpio_info *info);

struct gpio_desc *acpi_find_gpio(struct device *dev,
				 const char *con_id,
				 unsigned int idx,
				 enum gpiod_flags *dflags,
				 enum gpio_lookup_flags *lookupflags);
struct gpio_desc *acpi_node_get_gpiod(struct fwnode_handle *fwnode,
				      const char *propname, int index,
				      struct acpi_gpio_info *info);

int acpi_gpio_count(struct device *dev, const char *con_id);

bool acpi_can_fallback_to_crs(struct acpi_device *adev, const char *con_id);
#else
static inline void acpi_gpiochip_add(struct gpio_chip *chip) { }
static inline void acpi_gpiochip_remove(struct gpio_chip *chip) { }

static inline void
acpi_gpiochip_request_interrupts(struct gpio_chip *chip) { }

static inline void
acpi_gpiochip_free_interrupts(struct gpio_chip *chip) { }

static inline int
acpi_gpio_update_gpiod_flags(enum gpiod_flags *flags, struct acpi_gpio_info *info)
{
	return 0;
}

static inline struct gpio_desc *
acpi_find_gpio(struct device *dev, const char *con_id,
	       unsigned int idx, enum gpiod_flags *dflags,
	       enum gpio_lookup_flags *lookupflags)
{
	return ERR_PTR(-ENOENT);
}
static inline struct gpio_desc *
acpi_node_get_gpiod(struct fwnode_handle *fwnode, const char *propname,
		    int index, struct acpi_gpio_info *info)
{
	return ERR_PTR(-ENXIO);
}
static inline int acpi_gpio_count(struct device *dev, const char *con_id)
{
	return -ENODEV;
}

static inline bool acpi_can_fallback_to_crs(struct acpi_device *adev,
					    const char *con_id)
{
	return false;
}
#endif

struct gpio_array {
	struct gpio_desc	**desc;
	unsigned int		size;
	struct gpio_chip	*chip;
	unsigned long		*get_mask;
	unsigned long		*set_mask;
	unsigned long		invert_mask[];
};

struct gpio_desc *gpiochip_get_desc(struct gpio_chip *chip, u16 hwnum);
int gpiod_get_array_value_complex(bool raw, bool can_sleep,
				  unsigned int array_size,
				  struct gpio_desc **desc_array,
				  struct gpio_array *array_info,
				  unsigned long *value_bitmap);
int gpiod_set_array_value_complex(bool raw, bool can_sleep,
				  unsigned int array_size,
				  struct gpio_desc **desc_array,
				  struct gpio_array *array_info,
				  unsigned long *value_bitmap);

extern struct spinlock gpio_lock;
extern struct list_head gpio_devices;

struct gpio_desc {
	struct gpio_device	*gdev;
	unsigned long		flags;
/* flag symbols are bit numbers */
#define FLAG_REQUESTED	0
#define FLAG_IS_OUT	1
#define FLAG_EXPORT	2	/* protected by sysfs_lock */
#define FLAG_SYSFS	3	/* exported via /sys/class/gpio/control */
#define FLAG_ACTIVE_LOW	6	/* value has active low */
#define FLAG_OPEN_DRAIN	7	/* Gpio is open drain type */
#define FLAG_OPEN_SOURCE 8	/* Gpio is open source type */
#define FLAG_USED_AS_IRQ 9	/* GPIO is connected to an IRQ */
#define FLAG_IRQ_IS_ENABLED 10	/* GPIO is connected to an enabled IRQ */
#define FLAG_IS_HOGGED	11	/* GPIO is hogged */
#define FLAG_TRANSITORY 12	/* GPIO may lose value in sleep or reset */

	/* Connection label */
	const char		*label;
	/* Name of the GPIO */
	const char		*name;
};

int gpiod_request(struct gpio_desc *desc, const char *label);
void gpiod_free(struct gpio_desc *desc);
int gpiod_configure_flags(struct gpio_desc *desc, const char *con_id,
		unsigned long lflags, enum gpiod_flags dflags);
int gpiod_hog(struct gpio_desc *desc, const char *name,
		unsigned long lflags, enum gpiod_flags dflags);

/*
 * Return the GPIO number of the passed descriptor relative to its chip
 */
static inline int gpio_chip_hwgpio(const struct gpio_desc *desc)
{
	return desc - &desc->gdev->descs[0];
}

void devprop_gpiochip_set_names(struct gpio_chip *chip,
				const struct fwnode_handle *fwnode);

/* With descriptor prefix */

#define gpiod_emerg(desc, fmt, ...)					       \
	pr_emerg("gpio-%d (%s): " fmt, desc_to_gpio(desc), desc->label ? : "?",\
		 ##__VA_ARGS__)
#define gpiod_crit(desc, fmt, ...)					       \
	pr_crit("gpio-%d (%s): " fmt, desc_to_gpio(desc), desc->label ? : "?", \
		 ##__VA_ARGS__)
#define gpiod_err(desc, fmt, ...)					       \
	pr_err("gpio-%d (%s): " fmt, desc_to_gpio(desc), desc->label ? : "?",  \
		 ##__VA_ARGS__)
#define gpiod_warn(desc, fmt, ...)					       \
	pr_warn("gpio-%d (%s): " fmt, desc_to_gpio(desc), desc->label ? : "?", \
		 ##__VA_ARGS__)
#define gpiod_info(desc, fmt, ...)					       \
	pr_info("gpio-%d (%s): " fmt, desc_to_gpio(desc), desc->label ? : "?", \
		 ##__VA_ARGS__)
#define gpiod_dbg(desc, fmt, ...)					       \
	pr_debug("gpio-%d (%s): " fmt, desc_to_gpio(desc), desc->label ? : "?",\
		 ##__VA_ARGS__)

/* With chip prefix */

#define chip_emerg(chip, fmt, ...)					\
	dev_emerg(&chip->gpiodev->dev, "(%s): " fmt, chip->label, ##__VA_ARGS__)
#define chip_crit(chip, fmt, ...)					\
	dev_crit(&chip->gpiodev->dev, "(%s): " fmt, chip->label, ##__VA_ARGS__)
#define chip_err(chip, fmt, ...)					\
	dev_err(&chip->gpiodev->dev, "(%s): " fmt, chip->label, ##__VA_ARGS__)
#define chip_warn(chip, fmt, ...)					\
	dev_warn(&chip->gpiodev->dev, "(%s): " fmt, chip->label, ##__VA_ARGS__)
#define chip_info(chip, fmt, ...)					\
	dev_info(&chip->gpiodev->dev, "(%s): " fmt, chip->label, ##__VA_ARGS__)
#define chip_dbg(chip, fmt, ...)					\
	dev_dbg(&chip->gpiodev->dev, "(%s): " fmt, chip->label, ##__VA_ARGS__)

#ifdef CONFIG_GPIO_SYSFS

int gpiochip_sysfs_register(struct gpio_device *gdev);
void gpiochip_sysfs_unregister(struct gpio_device *gdev);

#else

static inline int gpiochip_sysfs_register(struct gpio_device *gdev)
{
	return 0;
}

static inline void gpiochip_sysfs_unregister(struct gpio_device *gdev)
{
}

#endif /* CONFIG_GPIO_SYSFS */

#endif /* GPIOLIB_H */
Commit	Line	Data
dae5f0af	1	/* SPDX-License-Identifier: GPL-2.0 */
664e3e5a MW	2	/*
	3	* Internal GPIO functions.
	4	*
	5	* Copyright (C) 2013, Intel Corporation
	6	* Author: Mika Westerberg <mika.westerberg@linux.intel.com>
664e3e5a MW	7	*/
	8
	9	#ifndef GPIOLIB_H
	10	#define GPIOLIB_H
	11
ff2b1359	12	#include <linux/gpio/driver.h>
63f2dc0a	13	#include <linux/gpio/consumer.h> /* for enum gpiod_flags */
5ccff852 MW	14	#include <linux/err.h>
5ccff852 MW	15	#include <linux/device.h>
ff2b1359 LW	16	#include <linux/module.h>
ff2b1359 LW	17	#include <linux/cdev.h>
5ccff852	18
f01d9075	19	enum of_gpio_flags;
ea713bc4	20	enum gpio_lookup_flags;
ce793486 RW	21	struct acpi_device;
ce793486 RW	22
ff2b1359 LW	23	/**
	24	* struct gpio_device - internal state container for GPIO devices
	25	* @id: numerical ID number for the GPIO chip
	26	* @dev: the GPIO device struct
3c702e99	27	* @chrdev: character device for the GPIO device
afbc4f31 LW	28	* @mockdev: class device used by the deprecated sysfs interface (may be
afbc4f31 LW	29	* NULL)
ff2b1359 LW	30	* @owner: helps prevent removal of modules exporting active GPIOs
	31	* @chip: pointer to the corresponding gpiochip, holding static
	32	* data for this device
1c3cdb18	33	* @descs: array of ngpio descriptors.
fdeb8e15 LW	34	* @ngpio: the number of GPIO lines on this GPIO device, equal to the size
	35	* of the @descs array.
	36	* @base: GPIO base in the DEPRECATED global Linux GPIO numberspace, assigned
	37	* at device creation time.
df4878e9 LW	38	* @label: a descriptive name for the GPIO device, such as the part number
df4878e9 LW	39	* or name of the IP component in a System on Chip.
43c54eca	40	* @data: per-instance data assigned by the driver
ff2b1359 LW	41	* @list: links gpio_device:s together for traversal
	42	*
	43	* This state container holds most of the runtime variable data
	44	* for a GPIO device and can hold references and live on after the
	45	* GPIO chip has been removed, if it is still being used from
	46	* userspace.
	47	*/
	48	struct gpio_device {
	49	int id;
	50	struct device dev;
3c702e99	51	struct cdev chrdev;
afbc4f31	52	struct device *mockdev;
ff2b1359 LW	53	struct module *owner;
ff2b1359 LW	54	struct gpio_chip *chip;
1c3cdb18	55	struct gpio_desc *descs;
fdeb8e15 LW	56	int base;
fdeb8e15 LW	57	u16 ngpio;
3b469b0a	58	const char *label;
43c54eca	59	void *data;
ff2b1359	60	struct list_head list;
20ec3e39 LW	61
	62	#ifdef CONFIG_PINCTRL
	63	/*
	64	* If CONFIG_PINCTRL is enabled, then gpio controllers can optionally
	65	* describe the actual pin range which they serve in an SoC. This
	66	* information would be used by pinctrl subsystem to configure
	67	* corresponding pins for gpio usage.
	68	*/
	69	struct list_head pin_ranges;
	70	#endif
ff2b1359 LW	71	};
ff2b1359 LW	72
5ccff852 MW	73	/**
5ccff852 MW	74	* struct acpi_gpio_info - ACPI GPIO specific information
5870cff4	75	* @adev: reference to ACPI device which consumes GPIO resource
a31f5c3a	76	* @flags: GPIO initialization flags
5ccff852	77	* @gpioint: if %true this GPIO is of type GpioInt otherwise type is GpioIo
e567c35f AS	78	* @polarity: interrupt polarity as provided by ACPI
e567c35f AS	79	* @triggering: triggering type as provided by ACPI
ce0929d2	80	* @quirks: Linux specific quirks as provided by struct acpi_gpio_mapping
5ccff852 MW	81	*/
5ccff852 MW	82	struct acpi_gpio_info {
5870cff4	83	struct acpi_device *adev;
a31f5c3a	84	enum gpiod_flags flags;
5ccff852	85	bool gpioint;
52044723 CR	86	int polarity;
52044723 CR	87	int triggering;
ce0929d2	88	unsigned int quirks;
5ccff852 MW	89	};
5ccff852 MW	90
7f2e553a	91	/* gpio suffixes used for ACPI and device tree lookup */
b23ec599	92	static __maybe_unused const char * const gpio_suffixes[] = { "gpios", "gpio" };
7f2e553a	93
ea713bc4 LW	94	#ifdef CONFIG_OF_GPIO
	95	struct gpio_desc of_find_gpio(struct device dev,
	96	const char *con_id,
	97	unsigned int idx,
	98	enum gpio_lookup_flags *flags);
e0852940 LW	99	struct gpio_desc of_get_named_gpiod_flags(struct device_node np,
e0852940 LW	100	const char list_name, int index, enum of_gpio_flags flags);
f4c1181f LW	101	int of_gpiochip_add(struct gpio_chip *gc);
f4c1181f LW	102	void of_gpiochip_remove(struct gpio_chip *gc);
ea713bc4 LW	103	#else
	104	static inline struct gpio_desc of_find_gpio(struct device dev,
	105	const char *con_id,
	106	unsigned int idx,
	107	enum gpio_lookup_flags *flags)
	108	{
	109	return ERR_PTR(-ENOENT);
	110	}
e0852940 LW	111	static inline struct gpio_desc of_get_named_gpiod_flags(struct device_node np,
	112	const char list_name, int index, enum of_gpio_flags flags)
	113	{
	114	return ERR_PTR(-ENOENT);
	115	}
f4c1181f LW	116	static inline int of_gpiochip_add(struct gpio_chip *gc) { return 0; }
f4c1181f LW	117	static inline void of_gpiochip_remove(struct gpio_chip *gc) { }
ea713bc4 LW	118	#endif /* CONFIG_OF_GPIO */
ea713bc4 LW	119
664e3e5a MW	120	#ifdef CONFIG_ACPI
	121	void acpi_gpiochip_add(struct gpio_chip *chip);
	122	void acpi_gpiochip_remove(struct gpio_chip *chip);
5ccff852	123
afa82fab MW	124	void acpi_gpiochip_request_interrupts(struct gpio_chip *chip);
	125	void acpi_gpiochip_free_interrupts(struct gpio_chip *chip);
	126
a31f5c3a	127	int acpi_gpio_update_gpiod_flags(enum gpiod_flags *flags,
5c34b6c1	128	struct acpi_gpio_info *info);
a31f5c3a	129
031ba28a LW	130	struct gpio_desc acpi_find_gpio(struct device dev,
	131	const char *con_id,
	132	unsigned int idx,
a31f5c3a	133	enum gpiod_flags *dflags,
031ba28a	134	enum gpio_lookup_flags *lookupflags);
504a3374 RW	135	struct gpio_desc acpi_node_get_gpiod(struct fwnode_handle fwnode,
	136	const char *propname, int index,
	137	struct acpi_gpio_info *info);
66858527 RI	138
66858527 RI	139	int acpi_gpio_count(struct device dev, const char con_id);
10cf4899 DT	140
10cf4899 DT	141	bool acpi_can_fallback_to_crs(struct acpi_device adev, const char con_id);
664e3e5a MW	142	#else
	143	static inline void acpi_gpiochip_add(struct gpio_chip *chip) { }
	144	static inline void acpi_gpiochip_remove(struct gpio_chip *chip) { }
5ccff852	145
afa82fab MW	146	static inline void
	147	acpi_gpiochip_request_interrupts(struct gpio_chip *chip) { }
	148
	149	static inline void
	150	acpi_gpiochip_free_interrupts(struct gpio_chip *chip) { }
	151
a31f5c3a	152	static inline int
5c34b6c1	153	acpi_gpio_update_gpiod_flags(enum gpiod_flags flags, struct acpi_gpio_info info)
a31f5c3a AS	154	{
	155	return 0;
	156	}
	157
5ccff852	158	static inline struct gpio_desc *
031ba28a	159	acpi_find_gpio(struct device dev, const char con_id,
a31f5c3a	160	unsigned int idx, enum gpiod_flags *dflags,
031ba28a	161	enum gpio_lookup_flags *lookupflags)
5ccff852	162	{
031ba28a	163	return ERR_PTR(-ENOENT);
5ccff852	164	}
504a3374 RW	165	static inline struct gpio_desc *
	166	acpi_node_get_gpiod(struct fwnode_handle fwnode, const char propname,
	167	int index, struct acpi_gpio_info *info)
	168	{
	169	return ERR_PTR(-ENXIO);
	170	}
66858527 RI	171	static inline int acpi_gpio_count(struct device dev, const char con_id)
	172	{
	173	return -ENODEV;
	174	}
10cf4899 DT	175
	176	static inline bool acpi_can_fallback_to_crs(struct acpi_device *adev,
	177	const char *con_id)
	178	{
	179	return false;
	180	}
664e3e5a MW	181	#endif
664e3e5a MW	182
bf9346f5 JK	183	struct gpio_array {
	184	struct gpio_desc **desc;
	185	unsigned int size;
	186	struct gpio_chip *chip;
	187	unsigned long *get_mask;
	188	unsigned long *set_mask;
	189	unsigned long invert_mask[];
	190	};
	191
1bd6b601	192	struct gpio_desc gpiochip_get_desc(struct gpio_chip chip, u16 hwnum);
eec1d566 LW	193	int gpiod_get_array_value_complex(bool raw, bool can_sleep,
	194	unsigned int array_size,
	195	struct gpio_desc **desc_array,
77588c14	196	struct gpio_array *array_info,
b9762beb	197	unsigned long *value_bitmap);
3027743f	198	int gpiod_set_array_value_complex(bool raw, bool can_sleep,
3c940660 GU	199	unsigned int array_size,
	200	struct gpio_desc **desc_array,
	201	struct gpio_array *array_info,
	202	unsigned long *value_bitmap);
1bd6b601	203
0eb4c6c2	204	extern struct spinlock gpio_lock;
ff2b1359	205	extern struct list_head gpio_devices;
0eb4c6c2 AC	206
0eb4c6c2 AC	207	struct gpio_desc {
fdeb8e15	208	struct gpio_device *gdev;
0eb4c6c2 AC	209	unsigned long flags;
	210	/* flag symbols are bit numbers */
	211	#define FLAG_REQUESTED 0
	212	#define FLAG_IS_OUT 1
	213	#define FLAG_EXPORT 2 /* protected by sysfs_lock */
	214	#define FLAG_SYSFS 3 /* exported via /sys/class/gpio/control */
0eb4c6c2 AC	215	#define FLAG_ACTIVE_LOW 6 /* value has active low */
	216	#define FLAG_OPEN_DRAIN 7 /* Gpio is open drain type */
	217	#define FLAG_OPEN_SOURCE 8 /* Gpio is open source type */
	218	#define FLAG_USED_AS_IRQ 9 /* GPIO is connected to an IRQ */
4e9439dd	219	#define FLAG_IRQ_IS_ENABLED 10 /* GPIO is connected to an enabled IRQ */
f625d460	220	#define FLAG_IS_HOGGED 11 /* GPIO is hogged */
e10f72bf	221	#define FLAG_TRANSITORY 12 /* GPIO may lose value in sleep or reset */
0eb4c6c2	222
c0017ed7	223	/* Connection label */
0eb4c6c2	224	const char *label;
c0017ed7 MP	225	/* Name of the GPIO */
c0017ed7 MP	226	const char *name;
0eb4c6c2 AC	227	};
	228
	229	int gpiod_request(struct gpio_desc desc, const char label);
	230	void gpiod_free(struct gpio_desc *desc);
c29fd9eb AS	231	int gpiod_configure_flags(struct gpio_desc desc, const char con_id,
c29fd9eb AS	232	unsigned long lflags, enum gpiod_flags dflags);
f625d460 BP	233	int gpiod_hog(struct gpio_desc desc, const char name,
f625d460 BP	234	unsigned long lflags, enum gpiod_flags dflags);
0eb4c6c2 AC	235
	236	/*
	237	* Return the GPIO number of the passed descriptor relative to its chip
	238	*/
4a5c886e	239	static inline int gpio_chip_hwgpio(const struct gpio_desc *desc)
0eb4c6c2	240	{
fdeb8e15	241	return desc - &desc->gdev->descs[0];
0eb4c6c2 AC	242	}
0eb4c6c2 AC	243
82270335 CL	244	void devprop_gpiochip_set_names(struct gpio_chip *chip,
82270335 CL	245	const struct fwnode_handle *fwnode);
9427ecbe	246
0eb4c6c2 AC	247	/* With descriptor prefix */
	248
	249	#define gpiod_emerg(desc, fmt, ...) \
	250	pr_emerg("gpio-%d (%s): " fmt, desc_to_gpio(desc), desc->label ? : "?",\
	251	##__VA_ARGS__)
	252	#define gpiod_crit(desc, fmt, ...) \
	253	pr_crit("gpio-%d (%s): " fmt, desc_to_gpio(desc), desc->label ? : "?", \
	254	##__VA_ARGS__)
	255	#define gpiod_err(desc, fmt, ...) \
	256	pr_err("gpio-%d (%s): " fmt, desc_to_gpio(desc), desc->label ? : "?", \
	257	##__VA_ARGS__)
	258	#define gpiod_warn(desc, fmt, ...) \
	259	pr_warn("gpio-%d (%s): " fmt, desc_to_gpio(desc), desc->label ? : "?", \
	260	##__VA_ARGS__)
	261	#define gpiod_info(desc, fmt, ...) \
	262	pr_info("gpio-%d (%s): " fmt, desc_to_gpio(desc), desc->label ? : "?", \
	263	##__VA_ARGS__)
	264	#define gpiod_dbg(desc, fmt, ...) \
	265	pr_debug("gpio-%d (%s): " fmt, desc_to_gpio(desc), desc->label ? : "?",\
	266	##__VA_ARGS__)
	267
	268	/* With chip prefix */
	269
	270	#define chip_emerg(chip, fmt, ...) \
34ffd85d	271	dev_emerg(&chip->gpiodev->dev, "(%s): " fmt, chip->label, ##__VA_ARGS__)
0eb4c6c2	272	#define chip_crit(chip, fmt, ...) \
34ffd85d	273	dev_crit(&chip->gpiodev->dev, "(%s): " fmt, chip->label, ##__VA_ARGS__)
0eb4c6c2	274	#define chip_err(chip, fmt, ...) \
34ffd85d	275	dev_err(&chip->gpiodev->dev, "(%s): " fmt, chip->label, ##__VA_ARGS__)
0eb4c6c2	276	#define chip_warn(chip, fmt, ...) \
34ffd85d	277	dev_warn(&chip->gpiodev->dev, "(%s): " fmt, chip->label, ##__VA_ARGS__)
0eb4c6c2	278	#define chip_info(chip, fmt, ...) \
34ffd85d	279	dev_info(&chip->gpiodev->dev, "(%s): " fmt, chip->label, ##__VA_ARGS__)
0eb4c6c2	280	#define chip_dbg(chip, fmt, ...) \
34ffd85d	281	dev_dbg(&chip->gpiodev->dev, "(%s): " fmt, chip->label, ##__VA_ARGS__)
0eb4c6c2 AC	282
	283	#ifdef CONFIG_GPIO_SYSFS
	284
afbc4f31 LW	285	int gpiochip_sysfs_register(struct gpio_device *gdev);
afbc4f31 LW	286	void gpiochip_sysfs_unregister(struct gpio_device *gdev);
0eb4c6c2 AC	287
	288	#else
	289
afbc4f31	290	static inline int gpiochip_sysfs_register(struct gpio_device *gdev)
0eb4c6c2 AC	291	{
	292	return 0;
	293	}
	294
afbc4f31	295	static inline void gpiochip_sysfs_unregister(struct gpio_device *gdev)
0eb4c6c2 AC	296	{
	297	}
	298
	299	#endif /* CONFIG_GPIO_SYSFS */
	300
664e3e5a	301	#endif /* GPIOLIB_H */