drivers/hid/hid-roccat-arvo.h

Source file repositories/reference/linux-study-clean/drivers/hid/hid-roccat-arvo.h

File Facts

System
Linux kernel
Corpus path
drivers/hid/hid-roccat-arvo.h
Extension
.h
Size
1630 bytes
Lines
83
Domain
Driver Families
Bucket
drivers/hid
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 arvo_mode_key { /* 2 bytes */
	uint8_t command; /* ARVO_COMMAND_MODE_KEY */
	uint8_t state;
} __packed;

struct arvo_button {
	uint8_t unknown[24];
} __packed;

struct arvo_info {
	uint8_t unknown[8];
} __packed;

struct arvo_key_mask { /* 2 bytes */
	uint8_t command; /* ARVO_COMMAND_KEY_MASK */
	uint8_t key_mask;
} __packed;

/* selected profile is persistent */
struct arvo_actual_profile { /* 2 bytes */
	uint8_t command; /* ARVO_COMMAND_ACTUAL_PROFILE */
	uint8_t actual_profile;
} __packed;

enum arvo_commands {
	ARVO_COMMAND_MODE_KEY = 0x3,
	ARVO_COMMAND_BUTTON = 0x4,
	ARVO_COMMAND_INFO = 0x5,
	ARVO_COMMAND_KEY_MASK = 0x6,
	ARVO_COMMAND_ACTUAL_PROFILE = 0x7,
};

struct arvo_special_report {
	uint8_t unknown1; /* always 0x01 */
	uint8_t event;
	uint8_t unknown2; /* always 0x70 */
} __packed;

enum arvo_special_report_events {
	ARVO_SPECIAL_REPORT_EVENT_ACTION_PRESS = 0x10,
	ARVO_SPECIAL_REPORT_EVENT_ACTION_RELEASE = 0x0,
};

enum arvo_special_report_event_masks {
	ARVO_SPECIAL_REPORT_EVENT_MASK_ACTION = 0xf0,
	ARVO_SPECIAL_REPORT_EVENT_MASK_BUTTON = 0x0f,
};

struct arvo_roccat_report {
	uint8_t profile;
	uint8_t button;
	uint8_t action;
} __packed;

enum arvo_roccat_report_action {
	ARVO_ROCCAT_REPORT_ACTION_RELEASE = 0,
	ARVO_ROCCAT_REPORT_ACTION_PRESS = 1,
};

struct arvo_device {
	int roccat_claimed;
	int chrdev_minor;

	struct mutex arvo_lock;

	int actual_profile;
};

#endif

Annotation

Implementation Notes