2 * Abilis Systems Single DVB-T Receiver
3 * Copyright (C) 2008 Pierrick Hascoet <pierrick.hascoet@abilis.com>
4 * Copyright (C) 2010 Devin Heitmueller <dheitmueller@kernellabs.com>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2, or (at your option)
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 #include <linux/kernel.h>
17 #include <linux/errno.h>
18 #include <linux/ctype.h>
19 #include <linux/delay.h>
20 #include <linux/firmware.h>
22 #include "as102_drv.h"
25 static const char as102_st_fw1[] = "as102_data1_st.hex";
26 static const char as102_st_fw2[] = "as102_data2_st.hex";
27 static const char as102_dt_fw1[] = "as102_data1_dt.hex";
28 static const char as102_dt_fw2[] = "as102_data2_dt.hex";
30 static unsigned char atohx(unsigned char *dst, char *src)
32 unsigned char value = 0;
34 char msb = tolower(*src) - '0';
35 char lsb = tolower(*(src + 1)) - '0';
42 *dst = value = ((msb & 0xF) << 4) | (lsb & 0xF);
47 * Parse INTEL HEX firmware file to extract address and data.
49 static int parse_hex_line(unsigned char *fw_data, unsigned char *addr,
50 unsigned char *data, int *dataLength,
51 unsigned char *addr_has_changed) {
54 unsigned char *src, dst;
56 if (*fw_data++ != ':') {
57 pr_err("invalid firmware file\n");
61 /* locate end of line */
62 for (src = fw_data; *src != '\n'; src += 2) {
64 /* parse line to split addr / data */
76 /* check if data is an address */
78 *addr_has_changed = 1;
80 *addr_has_changed = 0;
84 if (*addr_has_changed)
85 addr[(count - 4)] = dst;
87 data[(count - 4)] = dst;
90 data[(count - 4)] = dst;
96 /* return read value + ':' + '\n' */
97 return (count * 2) + 2;
100 static int as102_firmware_upload(struct as10x_bus_adapter_t *bus_adap,
102 const struct firmware *firmware) {
104 struct as10x_fw_pkt_t fw_pkt;
105 int total_read_bytes = 0, errno = 0;
106 unsigned char addr_has_changed = 0;
108 for (total_read_bytes = 0; total_read_bytes < firmware->size; ) {
109 int read_bytes = 0, data_len = 0;
111 /* parse intel hex line */
112 read_bytes = parse_hex_line(
113 (u8 *) (firmware->data + total_read_bytes),
122 /* detect the end of file */
123 total_read_bytes += read_bytes;
124 if (total_read_bytes == firmware->size) {
125 fw_pkt.u.request[0] = 0x00;
126 fw_pkt.u.request[1] = 0x03;
128 /* send EOF command */
129 errno = bus_adap->ops->upload_fw_pkt(bus_adap,
135 if (!addr_has_changed) {
136 /* prepare command to send */
137 fw_pkt.u.request[0] = 0x00;
138 fw_pkt.u.request[1] = 0x01;
140 data_len += sizeof(fw_pkt.u.request);
141 data_len += sizeof(fw_pkt.raw.address);
143 /* send cmd to device */
144 errno = bus_adap->ops->upload_fw_pkt(bus_adap,
155 return (errno == 0) ? total_read_bytes : errno;
158 int as102_fw_upload(struct as10x_bus_adapter_t *bus_adap)
161 const struct firmware *firmware = NULL;
162 unsigned char *cmd_buf = NULL;
163 const char *fw1, *fw2;
164 struct usb_device *dev = bus_adap->usb_dev;
166 /* select fw file to upload */
175 /* allocate buffer to store firmware upload command and data */
176 cmd_buf = kzalloc(MAX_FW_PKT_SIZE, GFP_KERNEL);
177 if (cmd_buf == NULL) {
182 /* request kernel to locate firmware file: part1 */
183 errno = request_firmware(&firmware, fw1, &dev->dev);
185 pr_err("%s: unable to locate firmware file: %s\n",
190 /* initiate firmware upload */
191 errno = as102_firmware_upload(bus_adap, cmd_buf, firmware);
193 pr_err("%s: error during firmware upload part1\n",
198 pr_info("%s: firmware: %s loaded with success\n",
200 release_firmware(firmware);
202 /* wait for boot to complete */
205 /* request kernel to locate firmware file: part2 */
206 errno = request_firmware(&firmware, fw2, &dev->dev);
208 pr_err("%s: unable to locate firmware file: %s\n",
213 /* initiate firmware upload */
214 errno = as102_firmware_upload(bus_adap, cmd_buf, firmware);
216 pr_err("%s: error during firmware upload part2\n",
221 pr_info("%s: firmware: %s loaded with success\n",
225 release_firmware(firmware);