![Greg Kroah-Hartman](/assets/img/avatar_default.png)
This pulls in all of the USB changes in 3.7-rc3 into usb-next and resolves the merge issue with: drivers/usb/misc/ezusb.c Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
168 lines
4.5 KiB
C
168 lines
4.5 KiB
C
/*
|
|
* EZ-USB specific functions used by some of the USB to Serial drivers.
|
|
*
|
|
* Copyright (C) 1999 - 2002 Greg Kroah-Hartman (greg@kroah.com)
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License version
|
|
* 2 as published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.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 {
|
|
/* EZ-USB Control and Status Register. Bit 0 controls 8051 reset */
|
|
unsigned short cpucs_reg;
|
|
unsigned short max_internal_adress;
|
|
};
|
|
|
|
static struct ezusb_fx_type ezusb_fx1 = {
|
|
.cpucs_reg = 0x7F92,
|
|
.max_internal_adress = 0x1B3F,
|
|
};
|
|
|
|
/* Commands for writing to memory */
|
|
#define WRITE_INT_RAM 0xA0
|
|
#define WRITE_EXT_RAM 0xA3
|
|
|
|
static int ezusb_writememory(struct usb_device *dev, int address,
|
|
unsigned char *data, int length, __u8 request)
|
|
{
|
|
int result;
|
|
unsigned char *transfer_buffer;
|
|
|
|
if (!dev)
|
|
return -ENODEV;
|
|
|
|
transfer_buffer = kmemdup(data, length, GFP_KERNEL);
|
|
if (!transfer_buffer) {
|
|
dev_err(&dev->dev, "%s - kmalloc(%d) failed.\n",
|
|
__func__, length);
|
|
return -ENOMEM;
|
|
}
|
|
result = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request,
|
|
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
|
|
address, 0, transfer_buffer, length, 3000);
|
|
|
|
kfree(transfer_buffer);
|
|
return result;
|
|
}
|
|
|
|
static int ezusb_set_reset(struct usb_device *dev, unsigned short cpucs_reg,
|
|
unsigned char reset_bit)
|
|
{
|
|
int response = ezusb_writememory(dev, cpucs_reg, &reset_bit, 1, WRITE_INT_RAM);
|
|
if (response < 0)
|
|
dev_err(&dev->dev, "%s-%d failed: %d\n",
|
|
__func__, reset_bit, response);
|
|
return response;
|
|
}
|
|
|
|
int ezusb_fx1_set_reset(struct usb_device *dev, unsigned char reset_bit)
|
|
{
|
|
return ezusb_set_reset(dev, ezusb_fx1.cpucs_reg, reset_bit);
|
|
}
|
|
EXPORT_SYMBOL_GPL(ezusb_fx1_set_reset);
|
|
|
|
static int ezusb_ihex_firmware_download(struct usb_device *dev,
|
|
struct ezusb_fx_type fx,
|
|
const char *firmware_path)
|
|
{
|
|
int ret = -ENOENT;
|
|
const struct firmware *firmware = NULL;
|
|
const struct ihex_binrec *record;
|
|
|
|
if (request_ihex_firmware(&firmware, firmware_path,
|
|
&dev->dev)) {
|
|
dev_err(&dev->dev,
|
|
"%s - request \"%s\" failed\n",
|
|
__func__, firmware_path);
|
|
goto out;
|
|
}
|
|
|
|
ret = ezusb_set_reset(dev, fx.cpucs_reg, 0);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
record = (const struct ihex_binrec *)firmware->data;
|
|
for (; record; record = ihex_next_binrec(record)) {
|
|
if (be32_to_cpu(record->addr) > fx.max_internal_adress) {
|
|
ret = ezusb_writememory(dev, be32_to_cpu(record->addr),
|
|
(unsigned char *)record->data,
|
|
be16_to_cpu(record->len), WRITE_EXT_RAM);
|
|
if (ret < 0) {
|
|
dev_err(&dev->dev, "%s - ezusb_writememory "
|
|
"failed writing internal memory "
|
|
"(%d %04X %p %d)\n", __func__, ret,
|
|
be32_to_cpu(record->addr), record->data,
|
|
be16_to_cpu(record->len));
|
|
goto out;
|
|
}
|
|
}
|
|
}
|
|
|
|
ret = ezusb_set_reset(dev, fx.cpucs_reg, 1);
|
|
if (ret < 0)
|
|
goto out;
|
|
record = (const struct ihex_binrec *)firmware->data;
|
|
for (; record; record = ihex_next_binrec(record)) {
|
|
if (be32_to_cpu(record->addr) <= fx.max_internal_adress) {
|
|
ret = ezusb_writememory(dev, be32_to_cpu(record->addr),
|
|
(unsigned char *)record->data,
|
|
be16_to_cpu(record->len), WRITE_INT_RAM);
|
|
if (ret < 0) {
|
|
dev_err(&dev->dev, "%s - ezusb_writememory "
|
|
"failed writing external memory "
|
|
"(%d %04X %p %d)\n", __func__, ret,
|
|
be32_to_cpu(record->addr), record->data,
|
|
be16_to_cpu(record->len));
|
|
goto out;
|
|
}
|
|
}
|
|
}
|
|
ret = ezusb_set_reset(dev, fx.cpucs_reg, 0);
|
|
out:
|
|
release_firmware(firmware);
|
|
return ret;
|
|
}
|
|
|
|
int ezusb_fx1_ihex_firmware_download(struct usb_device *dev,
|
|
const char *firmware_path)
|
|
{
|
|
return ezusb_ihex_firmware_download(dev, ezusb_fx1, firmware_path);
|
|
}
|
|
EXPORT_SYMBOL_GPL(ezusb_fx1_ihex_firmware_download);
|
|
|
|
#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_LICENSE("GPL");
|