drivers/usb/serial/cypress_m8.h

Source file repositories/reference/linux-study-clean/drivers/usb/serial/cypress_m8.h

File Facts

System
Linux kernel
Corpus path
drivers/usb/serial/cypress_m8.h
Extension
.h
Size
2364 bytes
Lines
83
Domain
Driver Families
Bucket
drivers/usb
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

#ifndef CYPRESS_M8_H
#define CYPRESS_M8_H

/*
 * definitions and function prototypes used for the cypress USB to Serial
 * controller
 */

/*
 * For sending our feature buffer - controlling serial communication states.
 * Linux HID has no support for serial devices so we do this through the driver
 */
#define HID_REQ_GET_REPORT	0x01
#define HID_REQ_SET_REPORT	0x09

/* List other cypress USB to Serial devices here, and add them to the id_table */

/* DeLorme Earthmate USB - a GPS device */
#define VENDOR_ID_DELORME		0x1163
#define PRODUCT_ID_EARTHMATEUSB		0x0100
#define PRODUCT_ID_EARTHMATEUSB_LT20	0x0200

/* Cypress HID->COM RS232 Adapter */
#define VENDOR_ID_CYPRESS		0x04b4
#define PRODUCT_ID_CYPHIDCOM		0x5500

/* Simply Automated HID->COM UPB PIM (using Cypress PID 0x5500) */
#define VENDOR_ID_SAI			0x17dd

/* FRWD Dongle - a GPS sports watch */
#define VENDOR_ID_FRWD			0x6737
#define PRODUCT_ID_CYPHIDCOM_FRWD	0x0001

/* Powercom UPS, chip CY7C63723 */
#define VENDOR_ID_POWERCOM		0x0d9f
#define PRODUCT_ID_UPS			0x0002

/* Nokia CA-42 USB to serial cable */
#define VENDOR_ID_DAZZLE		0x07d0
#define PRODUCT_ID_CA42			0x4101
/* End of device listing */

/* Used for setting / requesting serial line settings */
#define CYPRESS_SET_CONFIG	0x01
#define CYPRESS_GET_CONFIG	0x02

/* Used for throttle control */
#define THROTTLED		0x1
#define ACTUALLY_THROTTLED	0x2

/*
 * chiptypes - used in case firmware differs from the generic form ... offering
 * different baud speeds/etc.
 */
#define CT_EARTHMATE	0x01
#define CT_CYPHIDCOM	0x02
#define CT_CA42V2	0x03
#define CT_GENERIC	0x0F
/* End of chiptype definitions */

/*
 * RS-232 serial data communication protocol definitions.
 *
 * These are sent / read at byte 0 of the input/output hid reports.
 * You can find these values defined in the CY4601 USB to Serial design notes.
 */

#define CONTROL_DTR	0x20	/* data terminal ready */
#define CONTROL_RTS	0x10	/* request to send */
#define CONTROL_RESET	0x08	/* sent with output report */

#define UART_MSR_MASK	0xf0
#define UART_RI		0x80	/* ring indicator */
#define UART_CD		0x40	/* carrier detect */
#define UART_DSR	0x20	/* data set ready */
#define UART_CTS	0x10	/* clear to send */
#define CYP_ERROR	0x08	/* received from input report */

/* End of RS-232 protocol definitions */

#endif /* CYPRESS_M8_H */

Annotation

Implementation Notes