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With ARCH=x86, make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/misc/ezusb.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/misc/isight_firmware.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/misc/yurex.o Add the missing invocations of the MODULE_DESCRIPTION() macro. Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Link: https://lore.kernel.org/r/20240611-md-drivers-usb-misc-v1-1-98475a5aa8ef@quicinc.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
152 lines
4.1 KiB
C
152 lines
4.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* EZ-USB specific functions used by some of the USB to Serial drivers.
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*
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* Copyright (C) 1999 - 2002 Greg Kroah-Hartman (greg@kroah.com)
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*/
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/usb.h>
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#include <linux/firmware.h>
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#include <linux/ihex.h>
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#include <linux/usb/ezusb.h>
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struct ezusb_fx_type {
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/* EZ-USB Control and Status Register. Bit 0 controls 8051 reset */
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unsigned short cpucs_reg;
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unsigned short max_internal_adress;
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};
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static const struct ezusb_fx_type ezusb_fx1 = {
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.cpucs_reg = 0x7F92,
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.max_internal_adress = 0x1B3F,
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};
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/* Commands for writing to memory */
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#define WRITE_INT_RAM 0xA0
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#define WRITE_EXT_RAM 0xA3
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static int ezusb_writememory(struct usb_device *dev, int address,
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unsigned char *data, int length, __u8 request)
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{
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if (!dev)
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return -ENODEV;
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return usb_control_msg_send(dev, 0, request,
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USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
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address, 0, data, length, 3000, GFP_KERNEL);
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}
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static int ezusb_set_reset(struct usb_device *dev, unsigned short cpucs_reg,
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unsigned char reset_bit)
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{
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int response = ezusb_writememory(dev, cpucs_reg, &reset_bit, 1, WRITE_INT_RAM);
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if (response < 0)
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dev_err(&dev->dev, "%s-%d failed: %d\n",
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__func__, reset_bit, response);
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return response;
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}
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int ezusb_fx1_set_reset(struct usb_device *dev, unsigned char reset_bit)
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{
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return ezusb_set_reset(dev, ezusb_fx1.cpucs_reg, reset_bit);
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}
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EXPORT_SYMBOL_GPL(ezusb_fx1_set_reset);
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static int ezusb_ihex_firmware_download(struct usb_device *dev,
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struct ezusb_fx_type fx,
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const char *firmware_path)
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{
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int ret = -ENOENT;
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const struct firmware *firmware = NULL;
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const struct ihex_binrec *record;
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if (request_ihex_firmware(&firmware, firmware_path,
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&dev->dev)) {
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dev_err(&dev->dev,
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"%s - request \"%s\" failed\n",
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__func__, firmware_path);
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goto out;
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}
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ret = ezusb_set_reset(dev, fx.cpucs_reg, 0);
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if (ret < 0)
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goto out;
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record = (const struct ihex_binrec *)firmware->data;
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for (; record; record = ihex_next_binrec(record)) {
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if (be32_to_cpu(record->addr) > fx.max_internal_adress) {
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ret = ezusb_writememory(dev, be32_to_cpu(record->addr),
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(unsigned char *)record->data,
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be16_to_cpu(record->len), WRITE_EXT_RAM);
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if (ret < 0) {
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dev_err(&dev->dev, "%s - ezusb_writememory "
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"failed writing internal memory "
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"(%d %04X %p %d)\n", __func__, ret,
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be32_to_cpu(record->addr), record->data,
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be16_to_cpu(record->len));
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goto out;
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}
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}
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}
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ret = ezusb_set_reset(dev, fx.cpucs_reg, 1);
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if (ret < 0)
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goto out;
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record = (const struct ihex_binrec *)firmware->data;
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for (; record; record = ihex_next_binrec(record)) {
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if (be32_to_cpu(record->addr) <= fx.max_internal_adress) {
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ret = ezusb_writememory(dev, be32_to_cpu(record->addr),
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(unsigned char *)record->data,
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be16_to_cpu(record->len), WRITE_INT_RAM);
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if (ret < 0) {
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dev_err(&dev->dev, "%s - ezusb_writememory "
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"failed writing external memory "
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"(%d %04X %p %d)\n", __func__, ret,
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be32_to_cpu(record->addr), record->data,
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be16_to_cpu(record->len));
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goto out;
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}
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}
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}
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ret = ezusb_set_reset(dev, fx.cpucs_reg, 0);
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out:
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release_firmware(firmware);
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return ret;
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}
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int ezusb_fx1_ihex_firmware_download(struct usb_device *dev,
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const char *firmware_path)
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{
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return ezusb_ihex_firmware_download(dev, ezusb_fx1, firmware_path);
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}
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EXPORT_SYMBOL_GPL(ezusb_fx1_ihex_firmware_download);
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#if 0
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/*
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* Once someone one needs these fx2 functions, uncomment them
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* and add them to ezusb.h and all should be good.
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*/
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static struct ezusb_fx_type ezusb_fx2 = {
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.cpucs_reg = 0xE600,
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.max_internal_adress = 0x3FFF,
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};
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int ezusb_fx2_set_reset(struct usb_device *dev, unsigned char reset_bit)
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{
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return ezusb_set_reset(dev, ezusb_fx2.cpucs_reg, reset_bit);
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}
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EXPORT_SYMBOL_GPL(ezusb_fx2_set_reset);
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int ezusb_fx2_ihex_firmware_download(struct usb_device *dev,
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const char *firmware_path)
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{
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return ezusb_ihex_firmware_download(dev, ezusb_fx2, firmware_path);
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}
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EXPORT_SYMBOL_GPL(ezusb_fx2_ihex_firmware_download);
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#endif
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MODULE_DESCRIPTION("EZUSB device support");
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MODULE_LICENSE("GPL");
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