// SPDX-License-Identifier: GPL-2.0 /* * cypress_cy7c63.c * * Copyright (c) 2006-2007 Oliver Bock ([email protected]) * * This driver is based on the Cypress USB Driver by Marcus Maul * (cyport) and the 2.0 version of Greg Kroah-Hartman's * USB Skeleton driver. * * This is a generic driver for the Cypress CY7C63xxx family. * For the time being it enables you to read from and write to * the single I/O ports of the device. * * Supported vendors: AK Modul-Bus Computer GmbH * (Firmware "Port-Chip") * * Supported devices: CY7C63001A-PC * CY7C63001C-PXC * CY7C63001C-SXC * * Supported functions: Read/Write Ports * * * For up-to-date information please visit: * http://www.obock.de/kernel/cypress */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/slab.h> #include <linux/usb.h> #define DRIVER_AUTHOR … #define DRIVER_DESC … #define CYPRESS_VENDOR_ID … #define CYPRESS_PRODUCT_ID … #define CYPRESS_READ_PORT … #define CYPRESS_WRITE_PORT … #define CYPRESS_READ_RAM … #define CYPRESS_WRITE_RAM … #define CYPRESS_READ_ROM … #define CYPRESS_READ_PORT_ID0 … #define CYPRESS_WRITE_PORT_ID0 … #define CYPRESS_READ_PORT_ID1 … #define CYPRESS_WRITE_PORT_ID1 … #define CYPRESS_MAX_REQSIZE … /* table of devices that work with this driver */ static const struct usb_device_id cypress_table[] = …; MODULE_DEVICE_TABLE(usb, cypress_table); /* structure to hold all of our device specific stuff */ struct cypress { … }; /* used to send usb control messages to device */ static int vendor_command(struct cypress *dev, unsigned char request, unsigned char address, unsigned char data) { … } /* write port value */ static ssize_t write_port(struct device *dev, struct device_attribute *attr, const char *buf, size_t count, int port_num, int write_id) { … } /* attribute callback handler (write) */ static ssize_t port0_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } /* attribute callback handler (write) */ static ssize_t port1_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } /* read port value */ static ssize_t read_port(struct device *dev, struct device_attribute *attr, char *buf, int port_num, int read_id) { … } /* attribute callback handler (read) */ static ssize_t port0_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static DEVICE_ATTR_RW(port0); /* attribute callback handler (read) */ static ssize_t port1_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static DEVICE_ATTR_RW(port1); static struct attribute *cypress_attrs[] = …; ATTRIBUTE_GROUPS(…); static int cypress_probe(struct usb_interface *interface, const struct usb_device_id *id) { … } static void cypress_disconnect(struct usb_interface *interface) { … } static struct usb_driver cypress_driver = …; module_usb_driver(…) …; MODULE_AUTHOR(…); MODULE_DESCRIPTION(…); MODULE_LICENSE(…) …;
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