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[media] si2168: add support for firmware files in new format 

This patch adds support for new type of firmware versions of Si2168 chip.

Old type: n x 8 bytes (all data, first byte seems to be 04 or 05)
New type: n x 17 bytes (1 byte indicates len and max 16 bytes data)

New version of TechnoTrend CT2-4400 drivers
(http://www.tt-downloads.de/bda-treiber_4.3.0.0.zip) contains newer
firmware for Si2168-B40 that is in the new format. It can be extracted
with the following command:

dd if=ttTVStick4400_64.sys ibs=1 skip=323872 count=6919 of=dvb-demod-si2168-b40-01.fw

Signed-off-by: Olli Salonen <olli.salonen@iki.fi>
Reviewed-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Olli Salonen 2014-11-27 16:42:23 -03:00 committed by Mauro Carvalho Chehab
parent a594cf21aa
commit 1b97dc98b5
1 changed files with 31 additions and 13 deletions
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44
drivers/media/dvb-frontends/si2168.c
View File

@ -462,20 +462,38 @@ static int si2168_init(struct dvb_frontend *fe)
dev_info(&s->client->dev, "downloading firmware from file '%s'\n",
fw_file);
for (remaining = fw->size; remaining > 0; remaining -= i2c_wr_max) {
len = remaining;
if (len > i2c_wr_max)
len = i2c_wr_max;
if ((fw->size % 17 == 0) && (fw->data[0] > 5)) {
/* firmware is in the new format */
for (remaining = fw->size; remaining > 0; remaining -= 17) {
len = fw->data[fw->size - remaining];
memcpy(cmd.args, &fw->data[(fw->size - remaining) + 1], len);
cmd.wlen = len;
cmd.rlen = 1;
ret = si2168_cmd_execute(s, &cmd);
if (ret) {
dev_err(&s->client->dev,
"firmware download failed=%d\n",
ret);
goto error_fw_release;
}
}
} else {
/* firmware is in the old format */
for (remaining = fw->size; remaining > 0; remaining -= i2c_wr_max) {
len = remaining;
if (len > i2c_wr_max)
len = i2c_wr_max;
memcpy(cmd.args, &fw->data[fw->size - remaining], len);
cmd.wlen = len;
cmd.rlen = 1;
ret = si2168_cmd_execute(s, &cmd);
if (ret) {
dev_err(&s->client->dev,
"firmware download failed=%d\n",
ret);
goto error_fw_release;
memcpy(cmd.args, &fw->data[fw->size - remaining], len);
cmd.wlen = len;
cmd.rlen = 1;
ret = si2168_cmd_execute(s, &cmd);
if (ret) {
dev_err(&s->client->dev,
"firmware download failed=%d\n",
ret);
goto error_fw_release;
}
}
}