1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
8 * Purpose: Implement functions to access baseband
10 * Author: Yiching Chen
20 #include <linux/compiler.h>
24 #define FIRMWARE_VERSION 0x133 /* version 1.51 */
25 #define FIRMWARE_NAME "vntwusb.fw"
27 #define FIRMWARE_CHUNK_SIZE 0x400
29 int vnt_download_firmware(struct vnt_private *priv)
31 struct device *dev = &priv->usb->dev;
32 const struct firmware *fw;
38 dev_dbg(dev, "---->Download firmware\n");
40 ret = request_firmware(&fw, FIRMWARE_NAME, dev);
42 dev_err(dev, "firmware file %s request failed (%d)\n",
47 buffer = kmalloc(FIRMWARE_CHUNK_SIZE, GFP_KERNEL);
53 for (ii = 0; ii < fw->size; ii += FIRMWARE_CHUNK_SIZE) {
54 length = min_t(int, fw->size - ii, FIRMWARE_CHUNK_SIZE);
55 memcpy(buffer, fw->data + ii, length);
57 ret = vnt_control_out(priv, 0, 0x1200 + ii, 0x0000, length,
62 dev_dbg(dev, "Download firmware...%d %zu\n", ii, fw->size);
72 MODULE_FIRMWARE(FIRMWARE_NAME);
74 int vnt_firmware_branch_to_sram(struct vnt_private *priv)
76 dev_dbg(&priv->usb->dev, "---->Branch to Sram\n");
78 return vnt_control_out(priv, 1, 0x1200, 0x0000, 0, NULL);
81 int vnt_check_firmware_version(struct vnt_private *priv)
85 ret = vnt_control_in(priv, MESSAGE_TYPE_READ, 0,
86 MESSAGE_REQUEST_VERSION, 2,
87 (u8 *)&priv->firmware_version);
89 dev_dbg(&priv->usb->dev,
90 "Could not get firmware version: %d.\n", ret);
94 dev_dbg(&priv->usb->dev, "Firmware Version [%04x]\n",
95 priv->firmware_version);
97 if (priv->firmware_version == 0xFFFF) {
98 dev_dbg(&priv->usb->dev, "In Loader.\n");
103 if (priv->firmware_version < FIRMWARE_VERSION) {
104 /* branch to loader for download new firmware */
105 ret = vnt_firmware_branch_to_sram(priv);
107 dev_dbg(&priv->usb->dev,
108 "Could not branch to SRAM: %d.\n", ret);