drivers/dpll/zl3073x/synth.h

Source file repositories/reference/linux-study-clean/drivers/dpll/zl3073x/synth.h

File Facts

System
Linux kernel
Corpus path
drivers/dpll/zl3073x/synth.h
Extension
.h
Size
1716 bytes
Lines
73
Domain
Driver Families
Bucket
drivers/dpll
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct zl3073x_synth {
	struct_group(inv, /* Invariants */
		u32	freq_mult;
		u16	freq_base;
		u16	freq_m;
		u16	freq_n;
		u8	ctrl;
	);
};

int zl3073x_synth_state_fetch(struct zl3073x_dev *zldev, u8 synth_id);

const struct zl3073x_synth *zl3073x_synth_state_get(struct zl3073x_dev *zldev,
						    u8 synth_id);

/**
 * zl3073x_synth_dpll_get - get DPLL ID the synth is driven by
 * @synth: pointer to synth state
 *
 * Return: ID of DPLL the given synthetizer is driven by
 */
static inline u8 zl3073x_synth_dpll_get(const struct zl3073x_synth *synth)
{
	return FIELD_GET(ZL_SYNTH_CTRL_DPLL_SEL, synth->ctrl);
}

/**
 * zl3073x_synth_freq_get - get synth current freq
 * @synth: pointer to synth state
 *
 * Return: frequency of given synthetizer
 */
static inline u32 zl3073x_synth_freq_get(const struct zl3073x_synth *synth)
{
	return mul_u64_u32_div(synth->freq_base * synth->freq_m,
			       synth->freq_mult, synth->freq_n);
}

/**
 * zl3073x_synth_is_enabled - check if the given synth is enabled
 * @synth: pointer to synth state
 *
 * Return: true if synth is enabled, false otherwise
 */
static inline bool zl3073x_synth_is_enabled(const struct zl3073x_synth *synth)
{
	return FIELD_GET(ZL_SYNTH_CTRL_EN, synth->ctrl);
}

#endif /* _ZL3073X_SYNTH_H */

Annotation

Implementation Notes