// SPDX-License-Identifier: GPL-2.0+
/*
* USB Cypress M8 driver
*
* Copyright (C) 2004
* Lonnie Mendez (dignome@gmail.com)
* Copyright (C) 2003,2004
* Neil Whelchel (koyama@firstlight.net)
*
* See Documentation/usb/usb-serial.txt for more information on using this
* driver
*
* See http://geocities.com/i0xox0i for information on this driver and the
* earthmate usb device.
*/
/* Thanks to Neil Whelchel for writing the first cypress m8 implementation
for linux. */
/* Thanks to cypress for providing references for the hid reports. */
/* Thanks to Jiang Zhang for providing links and for general help. */
/* Code originates and was built up from ftdi_sio, belkin, pl2303 and others.*/
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/tty.h>
#include <linux/tty_driver.h>
#include <linux/tty_flip.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/spinlock.h>
#include <linux/usb.h>
#include <linux/usb/serial.h>
#include <linux/serial.h>
#include <linux/kfifo.h>
#include <linux/delay.h>
#include <linux/uaccess.h>
#include <asm/unaligned.h>
#include "cypress_m8.h"
static bool stats;
static int interval;
static bool unstable_bauds;
#define DRIVER_AUTHOR "Lonnie Mendez <dignome@gmail.com>, Neil Whelchel <koyama@firstlight.net>"
#define DRIVER_DESC "Cypress USB to Serial Driver"
/* write buffer size defines */
#define CYPRESS_BUF_SIZE 1024
static const struct usb_device_id id_table_earthmate[] = {
{ USB_DEVICE(VENDOR_ID_DELORME, PRODUCT_ID_EARTHMATEUSB) },
{ USB_DEVICE(VENDOR_ID_DELORME, PRODUCT_ID_EARTHMATEUSB_LT20) },
{ } /* Terminating entry */
};
static const struct usb_device_id id_table_cyphidcomrs232[] = {
{ USB_DEVICE(VENDOR_ID_CYPRESS, PRODUCT_ID_CYPHIDCOM) },
{ USB_DEVICE(VENDOR_ID_POWERCOM, PRODUCT_ID_UPS) },
{ USB_DEVICE(VENDOR_ID_FRWD, PRODUCT_ID_CYPHIDCOM_FRWD) },
{ } /* Terminating entry */
};
static const struct usb_device_id id_table_nokiaca42v2[] = {
{ USB_DEVICE(VENDOR_ID_DAZZLE, PRODUCT_ID_CA42) },
{ } /* Terminating entry */
};
static const struct usb_device_id id_table_combined[] = {
{ USB_DEVICE(VENDOR_ID_DELORME, PRODUCT_ID_EARTHMATEUSB) },
{ USB_DEVICE(VENDOR_ID_DELORME, PRODUCT_ID_EARTHMATEUSB_LT20) },
{ USB_DEVICE(VENDOR_ID_CYPRESS, PRODUCT_ID_CYPHIDCOM) },
{ USB_DEVICE(VENDOR_ID_POWERCOM, PRODUCT_ID_UPS) },
{ USB_DEVICE(VENDOR_ID_FRWD, PRODUCT_ID_CYPHIDCOM_FRWD) },
{ USB_DEVICE(VENDOR_ID_DAZZLE, PRODUCT_ID_CA42) },
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, id_table_combined);
enum packet_format {
packet_format_1, /* b0:status, b1:payload count */
packet_format_2 /* b0[7:3]:status, b0[2:0]:payload count */
};
struct cypress_private {
spinlock_t lock; /* private lock */
int chiptype; /* identifier of device, for quirks/etc */
int bytes_in; /* used for statistics */
int bytes_out; /* used for statistics */
int cmd_count; /* used for statistics */
int cmd_ctrl; /* always set this to 1 before issuing a command */
struct kfifo write_fifo; /* write fifo */
int write_urb_in_use; /* write urb in use indicator */
int write_urb_interval; /* interval to use for write urb */
int read_urb_interval; /* interval to use for read urb */
int comm_is_ok;