include/linux/mfd/kempld.h

Source file repositories/reference/linux-study-clean/include/linux/mfd/kempld.h

File Facts

System
Linux kernel
Corpus path
include/linux/mfd/kempld.h
Extension
.h
Size
4174 bytes
Lines
128
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

struct kempld_info {
	unsigned int major;
	unsigned int minor;
	unsigned int buildnr;
	unsigned int number;
	unsigned int type;
	unsigned int spec_major;
	unsigned int spec_minor;
	char version[KEMPLD_VERSION_LEN];
};

/**
 * struct kempld_device_data - Internal representation of the PLD device
 * @io_base:		Pointer to the IO memory
 * @io_index:		Pointer to the IO index register
 * @io_data:		Pointer to the IO data register
 * @pld_clock:		PLD clock frequency
 * @feature_mask:	PLD feature mask
 * @dev:		Pointer to kernel device structure
 * @info:		KEMPLD info structure
 * @lock:		PLD mutex
 */
struct kempld_device_data {
	void __iomem		*io_base;
	void __iomem		*io_index;
	void __iomem		*io_data;
	u32			pld_clock;
	u32			feature_mask;
	struct device		*dev;
	struct kempld_info	info;
	struct mutex		lock;
};

/**
 * struct kempld_platform_data - PLD hardware configuration structure
 * @pld_clock:			PLD clock frequency
 * @gpio_base:			GPIO base pin number
 * @ioresource:			IO addresses of the PLD
 * @get_hardware_mutex:		PLD specific get_mutex callback
 * @release_hardware_mutex:	PLD specific release_mutex callback
 * @get_info:			PLD specific get_info callback
 * @register_cells:		PLD specific register_cells callback
 */
struct kempld_platform_data {
	u32				pld_clock;
	int				gpio_base;
	struct resource			*ioresource;
	void (*get_hardware_mutex)	(struct kempld_device_data *);
	void (*release_hardware_mutex)	(struct kempld_device_data *);
	int (*get_info)			(struct kempld_device_data *);
	int (*register_cells)		(struct kempld_device_data *);
};

extern void kempld_get_mutex(struct kempld_device_data *pld);
extern void kempld_release_mutex(struct kempld_device_data *pld);
extern u8 kempld_read8(struct kempld_device_data *pld, u8 index);
extern void kempld_write8(struct kempld_device_data *pld, u8 index, u8 data);
extern u16 kempld_read16(struct kempld_device_data *pld, u8 index);
extern void kempld_write16(struct kempld_device_data *pld, u8 index, u16 data);
extern u32 kempld_read32(struct kempld_device_data *pld, u8 index);
extern void kempld_write32(struct kempld_device_data *pld, u8 index, u32 data);

#endif /* _LINUX_MFD_KEMPLD_H_ */

Annotation

Implementation Notes