mirror of https://gitee.com/openkylin/linux.git
229 lines
5.4 KiB
C
229 lines
5.4 KiB
C
/*
|
|
* Abilis Systems Single DVB-T Receiver
|
|
* Copyright (C) 2008 Pierrick Hascoet <pierrick.hascoet@abilis.com>
|
|
* Copyright (C) 2010 Devin Heitmueller <dheitmueller@kernellabs.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2, or (at your option)
|
|
* any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*/
|
|
#include <linux/kernel.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/ctype.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/firmware.h>
|
|
|
|
#include "as102_drv.h"
|
|
#include "as102_fw.h"
|
|
|
|
static const char as102_st_fw1[] = "as102_data1_st.hex";
|
|
static const char as102_st_fw2[] = "as102_data2_st.hex";
|
|
static const char as102_dt_fw1[] = "as102_data1_dt.hex";
|
|
static const char as102_dt_fw2[] = "as102_data2_dt.hex";
|
|
|
|
static unsigned char atohx(unsigned char *dst, char *src)
|
|
{
|
|
unsigned char value = 0;
|
|
|
|
char msb = tolower(*src) - '0';
|
|
char lsb = tolower(*(src + 1)) - '0';
|
|
|
|
if (msb > 9)
|
|
msb -= 7;
|
|
if (lsb > 9)
|
|
lsb -= 7;
|
|
|
|
*dst = value = ((msb & 0xF) << 4) | (lsb & 0xF);
|
|
return value;
|
|
}
|
|
|
|
/*
|
|
* Parse INTEL HEX firmware file to extract address and data.
|
|
*/
|
|
static int parse_hex_line(unsigned char *fw_data, unsigned char *addr,
|
|
unsigned char *data, int *dataLength,
|
|
unsigned char *addr_has_changed) {
|
|
|
|
int count = 0;
|
|
unsigned char *src, dst;
|
|
|
|
if (*fw_data++ != ':') {
|
|
pr_err("invalid firmware file\n");
|
|
return -EFAULT;
|
|
}
|
|
|
|
/* locate end of line */
|
|
for (src = fw_data; *src != '\n'; src += 2) {
|
|
atohx(&dst, src);
|
|
/* parse line to split addr / data */
|
|
switch (count) {
|
|
case 0:
|
|
*dataLength = dst;
|
|
break;
|
|
case 1:
|
|
addr[2] = dst;
|
|
break;
|
|
case 2:
|
|
addr[3] = dst;
|
|
break;
|
|
case 3:
|
|
/* check if data is an address */
|
|
if (dst == 0x04)
|
|
*addr_has_changed = 1;
|
|
else
|
|
*addr_has_changed = 0;
|
|
break;
|
|
case 4:
|
|
case 5:
|
|
if (*addr_has_changed)
|
|
addr[(count - 4)] = dst;
|
|
else
|
|
data[(count - 4)] = dst;
|
|
break;
|
|
default:
|
|
data[(count - 4)] = dst;
|
|
break;
|
|
}
|
|
count++;
|
|
}
|
|
|
|
/* return read value + ':' + '\n' */
|
|
return (count * 2) + 2;
|
|
}
|
|
|
|
static int as102_firmware_upload(struct as10x_bus_adapter_t *bus_adap,
|
|
unsigned char *cmd,
|
|
const struct firmware *firmware) {
|
|
|
|
struct as10x_fw_pkt_t fw_pkt;
|
|
int total_read_bytes = 0, errno = 0;
|
|
unsigned char addr_has_changed = 0;
|
|
|
|
for (total_read_bytes = 0; total_read_bytes < firmware->size; ) {
|
|
int read_bytes = 0, data_len = 0;
|
|
|
|
/* parse intel hex line */
|
|
read_bytes = parse_hex_line(
|
|
(u8 *) (firmware->data + total_read_bytes),
|
|
fw_pkt.raw.address,
|
|
fw_pkt.raw.data,
|
|
&data_len,
|
|
&addr_has_changed);
|
|
|
|
if (read_bytes <= 0)
|
|
goto error;
|
|
|
|
/* detect the end of file */
|
|
total_read_bytes += read_bytes;
|
|
if (total_read_bytes == firmware->size) {
|
|
fw_pkt.u.request[0] = 0x00;
|
|
fw_pkt.u.request[1] = 0x03;
|
|
|
|
/* send EOF command */
|
|
errno = bus_adap->ops->upload_fw_pkt(bus_adap,
|
|
(uint8_t *)
|
|
&fw_pkt, 2, 0);
|
|
if (errno < 0)
|
|
goto error;
|
|
} else {
|
|
if (!addr_has_changed) {
|
|
/* prepare command to send */
|
|
fw_pkt.u.request[0] = 0x00;
|
|
fw_pkt.u.request[1] = 0x01;
|
|
|
|
data_len += sizeof(fw_pkt.u.request);
|
|
data_len += sizeof(fw_pkt.raw.address);
|
|
|
|
/* send cmd to device */
|
|
errno = bus_adap->ops->upload_fw_pkt(bus_adap,
|
|
(uint8_t *)
|
|
&fw_pkt,
|
|
data_len,
|
|
0);
|
|
if (errno < 0)
|
|
goto error;
|
|
}
|
|
}
|
|
}
|
|
error:
|
|
return (errno == 0) ? total_read_bytes : errno;
|
|
}
|
|
|
|
int as102_fw_upload(struct as10x_bus_adapter_t *bus_adap)
|
|
{
|
|
int errno = -EFAULT;
|
|
const struct firmware *firmware = NULL;
|
|
unsigned char *cmd_buf = NULL;
|
|
const char *fw1, *fw2;
|
|
struct usb_device *dev = bus_adap->usb_dev;
|
|
|
|
/* select fw file to upload */
|
|
if (dual_tuner) {
|
|
fw1 = as102_dt_fw1;
|
|
fw2 = as102_dt_fw2;
|
|
} else {
|
|
fw1 = as102_st_fw1;
|
|
fw2 = as102_st_fw2;
|
|
}
|
|
|
|
/* allocate buffer to store firmware upload command and data */
|
|
cmd_buf = kzalloc(MAX_FW_PKT_SIZE, GFP_KERNEL);
|
|
if (cmd_buf == NULL) {
|
|
errno = -ENOMEM;
|
|
goto error;
|
|
}
|
|
|
|
/* request kernel to locate firmware file: part1 */
|
|
errno = request_firmware(&firmware, fw1, &dev->dev);
|
|
if (errno < 0) {
|
|
pr_err("%s: unable to locate firmware file: %s\n",
|
|
DRIVER_NAME, fw1);
|
|
goto error;
|
|
}
|
|
|
|
/* initiate firmware upload */
|
|
errno = as102_firmware_upload(bus_adap, cmd_buf, firmware);
|
|
if (errno < 0) {
|
|
pr_err("%s: error during firmware upload part1\n",
|
|
DRIVER_NAME);
|
|
goto error;
|
|
}
|
|
|
|
pr_info("%s: firmware: %s loaded with success\n",
|
|
DRIVER_NAME, fw1);
|
|
release_firmware(firmware);
|
|
|
|
/* wait for boot to complete */
|
|
mdelay(100);
|
|
|
|
/* request kernel to locate firmware file: part2 */
|
|
errno = request_firmware(&firmware, fw2, &dev->dev);
|
|
if (errno < 0) {
|
|
pr_err("%s: unable to locate firmware file: %s\n",
|
|
DRIVER_NAME, fw2);
|
|
goto error;
|
|
}
|
|
|
|
/* initiate firmware upload */
|
|
errno = as102_firmware_upload(bus_adap, cmd_buf, firmware);
|
|
if (errno < 0) {
|
|
pr_err("%s: error during firmware upload part2\n",
|
|
DRIVER_NAME);
|
|
goto error;
|
|
}
|
|
|
|
pr_info("%s: firmware: %s loaded with success\n",
|
|
DRIVER_NAME, fw2);
|
|
error:
|
|
kfree(cmd_buf);
|
|
release_firmware(firmware);
|
|
|
|
return errno;
|
|
}
|