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V4L/DVB (8098): xc5000: add module option to load firmware during driver attach

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The xc5000 firmware download process can be slow on certain devices.

Add a module option, "init_fw" to perform the firmware download during
xc5000_attach(), which would get the firmware download over with well
before any tune request is made.

When this option is enabled, it will reduce the time it takes to get a
signal lock during the first tune after driver load, but will add a few
seconds to the driver initialization.

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Michael Krufky 2008-06-21 22:13:42 -03:00 committed by Mauro Carvalho Chehab
parent fa1035997c
commit 7dc1b8844e
1 changed files with 7 additions and 0 deletions
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7
drivers/media/common/tuners/xc5000.c
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@ -36,6 +36,10 @@ static int debug;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");
static int xc5000_load_fw_on_attach;
module_param_named(init_fw, xc5000_load_fw_on_attach, int, 0644);
MODULE_PARM_DESC(init_fw, "Load firmware during driver initialization.");
#define dprintk(level,fmt, arg...) if (debug >= level) \
printk(KERN_INFO "%s: " fmt, "xc5000", ## arg)
@ -972,6 +976,9 @@ struct dvb_frontend *xc5000_attach(struct dvb_frontend *fe,
fe->tuner_priv = priv;
if (xc5000_load_fw_on_attach)
xc5000_init(fe);
return fe;
}
EXPORT_SYMBOL(xc5000_attach);