diff options
Diffstat (limited to 'drivers/usb/serial/ezusb.c')
| -rw-r--r-- | drivers/usb/serial/ezusb.c | 160 |
1 files changed, 0 insertions, 160 deletions
diff --git a/drivers/usb/serial/ezusb.c b/drivers/usb/serial/ezusb.c deleted file mode 100644 index 4223d761223d..000000000000 --- a/drivers/usb/serial/ezusb.c +++ /dev/null @@ -1,160 +0,0 @@ -/* - * 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> - -struct ezusb_fx_type { - /* EZ-USB Control and Status Register. Bit 0 controls 8051 reset */ - unsigned short cpucs_reg; - unsigned short max_internal_adress; -}; - -struct ezusb_fx_type ezusb_fx1 = { - .cpucs_reg = 0x7F92, - .max_internal_adress = 0x1B3F, -}; - -struct ezusb_fx_type ezusb_fx2 = { - .cpucs_reg = 0xE600, - .max_internal_adress = 0x3FFF, -}; - -/* Commands for writing to memory */ -#define WRITE_INT_RAM 0xA0 -#define WRITE_EXT_RAM 0xA3 - -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; -} -EXPORT_SYMBOL_GPL(ezusb_writememory); - -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); - -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); - -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); - -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); - |