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[media] mn88472: check if firmware is already running before loading it 

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>
wifi-calibration
Benjamin Larsson 2015-03-15 19:57:54 -03:00 committed by Mauro Carvalho Chehab
parent 567627bfb2
commit 4752eb2731
1 changed files with 16 additions and 5 deletions
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21
drivers/staging/media/mn88472/mn88472.c
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@ -258,7 +258,7 @@ static int mn88472_init(struct dvb_frontend *fe)
int ret, len, remaining;
const struct firmware *fw = NULL;
u8 *fw_file = MN88472_FIRMWARE;
unsigned int csum;
unsigned int tmp;
dev_dbg(&client->dev, "\n");
@ -274,6 +274,17 @@ static int mn88472_init(struct dvb_frontend *fe)
if (ret)
goto err;
/* check if firmware is already running */
ret = regmap_read(dev->regmap[0], 0xf5, &tmp);
if (ret)
goto err;
if (!(tmp & 0x1)) {
dev_info(&client->dev, "firmware already running\n");
dev->warm = true;
return 0;
}
/* request the firmware, this will block and timeout */
ret = request_firmware(&fw, fw_file, &client->dev);
if (ret) {
@ -305,18 +316,18 @@ static int mn88472_init(struct dvb_frontend *fe)
}
/* parity check of firmware */
ret = regmap_read(dev->regmap[0], 0xf8, &csum);
ret = regmap_read(dev->regmap[0], 0xf8, &tmp);
if (ret) {
dev_err(&client->dev,
"parity reg read failed=%d\n", ret);
goto err;
}
if (csum & 0x10) {
if (tmp & 0x10) {
dev_err(&client->dev,
"firmware parity check failed=0x%x\n", csum);
"firmware parity check failed=0x%x\n", tmp);
goto err;
}
dev_err(&client->dev, "firmware parity check succeeded=0x%x\n", csum);
dev_err(&client->dev, "firmware parity check succeeded=0x%x\n", tmp);
ret = regmap_write(dev->regmap[0], 0xf5, 0x00);
if (ret)