include/linux/mfd/wm8994/core.h

Source file repositories/reference/linux-study-clean/include/linux/mfd/wm8994/core.h

File Facts

System
Linux kernel
Corpus path
include/linux/mfd/wm8994/core.h
Extension
.h
Size
3282 bytes
Lines
141
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 wm8994 {
	struct wm8994_pdata pdata;

	enum wm8994_type type;
	int revision;
	int cust_id;

	struct device *dev;
	struct regmap *regmap;

	bool ldo_ena_always_driven;

	int gpio_base;
	int irq_base;

	int irq;
	struct regmap_irq_chip_data *irq_data;
	struct irq_domain *edge_irq;

	/* Used over suspend/resume */
	bool suspended;

	struct regulator_dev *dbvdd;
	int num_supplies;
	struct regulator_bulk_data *supplies;
};

/* Device I/O API */

static inline int wm8994_reg_read(struct wm8994 *wm8994, unsigned short reg)
{
	unsigned int val;
	int ret;

	ret = regmap_read(wm8994->regmap, reg, &val);

	if (ret < 0)
		return ret;
	else
		return val;
}

static inline int wm8994_reg_write(struct wm8994 *wm8994, unsigned short reg,
				   unsigned short val)
{
	return regmap_write(wm8994->regmap, reg, val);
}

static inline int wm8994_bulk_read(struct wm8994 *wm8994, unsigned short reg,
				   int count, u16 *buf)
{
	return regmap_bulk_read(wm8994->regmap, reg, buf, count);
}

static inline int wm8994_bulk_write(struct wm8994 *wm8994, unsigned short reg,
				    int count, const u16 *buf)
{
	return regmap_raw_write(wm8994->regmap, reg, buf, count * sizeof(u16));
}

static inline int wm8994_set_bits(struct wm8994 *wm8994, unsigned short reg,
		    unsigned short mask, unsigned short val)
{
	return regmap_update_bits(wm8994->regmap, reg, mask, val);
}

/* Helper to save on boilerplate */
static inline int wm8994_request_irq(struct wm8994 *wm8994, int irq,
				     irq_handler_t handler, const char *name,
				     void *data)
{
	if (!wm8994->irq_data)
		return -EINVAL;
	return request_threaded_irq(regmap_irq_get_virq(wm8994->irq_data, irq),
				    NULL, handler, IRQF_TRIGGER_RISING, name,
				    data);
}
static inline void wm8994_free_irq(struct wm8994 *wm8994, int irq, void *data)
{
	if (!wm8994->irq_data)
		return;
	free_irq(regmap_irq_get_virq(wm8994->irq_data, irq), data);
}

int wm8994_irq_init(struct wm8994 *wm8994);
void wm8994_irq_exit(struct wm8994 *wm8994);

#endif

Annotation

Implementation Notes