drivers/input/touchscreen/cyttsp_core.h

Source file repositories/reference/linux-study-clean/drivers/input/touchscreen/cyttsp_core.h

File Facts

System
Linux kernel
Corpus path
drivers/input/touchscreen/cyttsp_core.h
Extension
.h
Size
2801 bytes
Lines
142
Domain
Driver Families
Bucket
drivers/input
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 cyttsp_tch {
	__be16 x, y;
	u8 z;
} __packed;

/* TrueTouch Standard Product Gen3 interface definition */
struct cyttsp_xydata {
	u8 hst_mode;
	u8 tt_mode;
	u8 tt_stat;
	struct cyttsp_tch tch1;
	u8 touch12_id;
	struct cyttsp_tch tch2;
	u8 gest_cnt;
	u8 gest_id;
	struct cyttsp_tch tch3;
	u8 touch34_id;
	struct cyttsp_tch tch4;
	u8 tt_undef[3];
	u8 act_dist;
	u8 tt_reserved;
} __packed;


/* TTSP System Information interface definition */
struct cyttsp_sysinfo_data {
	u8 hst_mode;
	u8 mfg_stat;
	u8 mfg_cmd;
	u8 cid[3];
	u8 tt_undef1;
	u8 uid[8];
	u8 bl_verh;
	u8 bl_verl;
	u8 tts_verh;
	u8 tts_verl;
	u8 app_idh;
	u8 app_idl;
	u8 app_verh;
	u8 app_verl;
	u8 tt_undef[5];
	u8 scn_typ;
	u8 act_intrvl;
	u8 tch_tmout;
	u8 lp_intrvl;
};

/* TTSP Bootloader Register Map interface definition */
#define CY_BL_CHKSUM_OK 0x01
struct cyttsp_bootloader_data {
	u8 bl_file;
	u8 bl_status;
	u8 bl_error;
	u8 blver_hi;
	u8 blver_lo;
	u8 bld_blver_hi;
	u8 bld_blver_lo;
	u8 ttspver_hi;
	u8 ttspver_lo;
	u8 appid_hi;
	u8 appid_lo;
	u8 appver_hi;
	u8 appver_lo;
	u8 cid_0;
	u8 cid_1;
	u8 cid_2;
};

struct cyttsp;

struct cyttsp_bus_ops {
	u16 bustype;
	int (*write)(struct device *dev, u8 *xfer_buf, u16 addr, u8 length,
			const void *values);
	int (*read)(struct device *dev, u8 *xfer_buf, u16 addr, u8 length,
			void *values);
};

enum cyttsp_state {
	CY_IDLE_STATE,
	CY_ACTIVE_STATE,
	CY_BL_STATE,
};

struct cyttsp {
	struct device *dev;
	int irq;
	struct input_dev *input;
	const struct cyttsp_bus_ops *bus_ops;
	struct cyttsp_bootloader_data bl_data;

Annotation

Implementation Notes