diff options
Diffstat (limited to 'drivers/usb/misc')
-rw-r--r-- | drivers/usb/misc/Kconfig | 5 | ||||
-rw-r--r-- | drivers/usb/misc/Makefile | 1 | ||||
-rw-r--r-- | drivers/usb/misc/emi62.c | 2 | ||||
-rw-r--r-- | drivers/usb/misc/ezusb.c | 160 | ||||
-rw-r--r-- | drivers/usb/misc/legousbtower.c | 3 | ||||
-rw-r--r-- | drivers/usb/misc/rio500.c | 2 |
6 files changed, 168 insertions, 5 deletions
diff --git a/drivers/usb/misc/Kconfig b/drivers/usb/misc/Kconfig index 1bfcd02ebeb5..a8f05239350e 100644 --- a/drivers/usb/misc/Kconfig +++ b/drivers/usb/misc/Kconfig @@ -244,3 +244,8 @@ config USB_YUREX To compile this driver as a module, choose M here: the module will be called yurex. +config USB_EZUSB_FX2 + tristate "Functions for loading firmware on EZUSB chips" + help + Say Y here if you need EZUSB device support. + (Cypress FX/FX2/FX2LP microcontrollers) diff --git a/drivers/usb/misc/Makefile b/drivers/usb/misc/Makefile index 796ce7ebccc8..3e99a643294b 100644 --- a/drivers/usb/misc/Makefile +++ b/drivers/usb/misc/Makefile @@ -11,6 +11,7 @@ obj-$(CONFIG_USB_CYPRESS_CY7C63) += cypress_cy7c63.o obj-$(CONFIG_USB_CYTHERM) += cytherm.o obj-$(CONFIG_USB_EMI26) += emi26.o obj-$(CONFIG_USB_EMI62) += emi62.o +obj-$(CONFIG_USB_EZUSB_FX2) += ezusb.o obj-$(CONFIG_USB_FTDI_ELAN) += ftdi-elan.o obj-$(CONFIG_USB_IDMOUSE) += idmouse.o obj-$(CONFIG_USB_IOWARRIOR) += iowarrior.o diff --git a/drivers/usb/misc/emi62.c b/drivers/usb/misc/emi62.c index ff08015b230c..ae794b90766b 100644 --- a/drivers/usb/misc/emi62.c +++ b/drivers/usb/misc/emi62.c @@ -232,7 +232,7 @@ wraperr: return err; } -static const struct usb_device_id id_table[] __devinitconst = { +static const struct usb_device_id id_table[] = { { USB_DEVICE(EMI62_VENDOR_ID, EMI62_PRODUCT_ID) }, { } /* Terminating entry */ }; diff --git a/drivers/usb/misc/ezusb.c b/drivers/usb/misc/ezusb.c new file mode 100644 index 000000000000..4223d761223d --- /dev/null +++ b/drivers/usb/misc/ezusb.c @@ -0,0 +1,160 @@ +/* + * 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); + diff --git a/drivers/usb/misc/legousbtower.c b/drivers/usb/misc/legousbtower.c index a2702cbfe804..80894791c020 100644 --- a/drivers/usb/misc/legousbtower.c +++ b/drivers/usb/misc/legousbtower.c @@ -868,9 +868,6 @@ static int tower_probe (struct usb_interface *interface, const struct usb_device dbg(2, "%s: enter", __func__); - if (udev == NULL) - dev_info(&interface->dev, "udev is NULL.\n"); - /* allocate memory for our device state and initialize it */ dev = kmalloc (sizeof(struct lego_usb_tower), GFP_KERNEL); diff --git a/drivers/usb/misc/rio500.c b/drivers/usb/misc/rio500.c index 1084124c4a44..b9b356a9dd11 100644 --- a/drivers/usb/misc/rio500.c +++ b/drivers/usb/misc/rio500.c @@ -338,7 +338,7 @@ write_rio(struct file *file, const char __user *buffer, thistime -= partial; } else break; - }; + } if (result) { dev_err(&rio->rio_dev->dev, "Write Whoops - %x\n", result); |