linux/drivers/usb/misc/ezusb.c

// SPDX-License-Identifier: GPL-2.0
/*
 * EZ-USB specific functions used by some of the USB to Serial drivers.
 *
 * Copyright (C) 1999 - 2002 Greg Kroah-Hartman ([email protected])
 */

#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/usb.h>
#include <linux/firmware.h>
#include <linux/ihex.h>
#include <linux/usb/ezusb.h>

struct ezusb_fx_type { … };

static const struct ezusb_fx_type ezusb_fx1 = …;

/* Commands for writing to memory */
#define WRITE_INT_RAM …
#define WRITE_EXT_RAM …

static int ezusb_writememory(struct usb_device *dev, int address,
				unsigned char *data, int length, __u8 request)
{ … }

static int ezusb_set_reset(struct usb_device *dev, unsigned short cpucs_reg,
			   unsigned char reset_bit)
{ … }

int ezusb_fx1_set_reset(struct usb_device *dev, unsigned char reset_bit)
{ … }
EXPORT_SYMBOL_GPL(…);

static int ezusb_ihex_firmware_download(struct usb_device *dev,
					struct ezusb_fx_type fx,
					const char *firmware_path)
{ … }

int ezusb_fx1_ihex_firmware_download(struct usb_device *dev,
				     const char *firmware_path)
{ … }
EXPORT_SYMBOL_GPL(…);

#if 0
/*
 * Once someone one needs these fx2 functions, uncomment them
 * and add them to ezusb.h and all should be good.
 */
static struct ezusb_fx_type ezusb_fx2 = {
	.cpucs_reg = 0xE600,
	.max_internal_adress = 0x3FFF,
};

int ezusb_fx2_set_reset(struct usb_device *dev, unsigned char reset_bit)
{
	return ezusb_set_reset(dev, ezusb_fx2.cpucs_reg, reset_bit);
}
EXPORT_SYMBOL_GPL(ezusb_fx2_set_reset);

int ezusb_fx2_ihex_firmware_download(struct usb_device *dev,
				     const char *firmware_path)
{
	return ezusb_ihex_firmware_download(dev, ezusb_fx2, firmware_path);
}
EXPORT_SYMBOL_GPL(ezusb_fx2_ihex_firmware_download);
#endif

MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;