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[media] mn88473: implement firmware parity check 

Signed-off-by: Benjamin Larsson <benjamin@southpole.se>
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Benjamin Larsson 2015-03-15 19:57:52 -03:00 committed by Mauro Carvalho Chehab
parent 307e95c922
commit 0f21ac7f92
1 changed files with 15 additions and 0 deletions
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15
drivers/staging/media/mn88473/mn88473.c
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@ -192,6 +192,7 @@ static int mn88473_init(struct dvb_frontend *fe)
int ret, len, remaining;
const struct firmware *fw = NULL;
u8 *fw_file = MN88473_FIRMWARE;
unsigned int tmp;
dev_dbg(&client->dev, "\n");
@ -227,6 +228,20 @@ static int mn88473_init(struct dvb_frontend *fe)
}
}
/* parity check of firmware */
ret = regmap_read(dev->regmap[0], 0xf8, &tmp);
if (ret) {
dev_err(&client->dev,
"parity reg read failed=%d\n", ret);
goto err;
}
if (tmp & 0x10) {
dev_err(&client->dev,
"firmware parity check failed=0x%x\n", tmp);
goto err;
}
dev_err(&client->dev, "firmware parity check succeeded=0x%x\n", tmp);
ret = regmap_write(dev->regmap[0], 0xf5, 0x00);
if (ret)
goto err;