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V4L/DVB (7029): tda18271: provide a choice whether to perform rf cal on init or on first tune

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If module option "cal" is set to 1, the ~22 sec rf tracking filter calibration
sequence will be invoked on startup.  Otherwise, the calibration will take
place during the first tune.

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Michael Krufky 2008-01-13 22:01:07 -03:00 committed by Mauro Carvalho Chehab
parent 839c6c96d0
commit 0f96251e7b
1 changed files with 8 additions and 0 deletions
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8
drivers/media/dvb/frontends/tda18271-fe.c
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@ -27,6 +27,10 @@ module_param_named(debug, tda18271_debug, int, 0644);
MODULE_PARM_DESC(debug, "set debug level "
"(info=1, map=2, reg=4, adv=8, cal=16 (or-able))");
int tda18271_cal_on_startup;
module_param_named(cal, tda18271_cal_on_startup, int, 0644);
MODULE_PARM_DESC(cal, "perform RF tracking filter calibration on startup");
static LIST_HEAD(tda18271_list);
static DEFINE_MUTEX(tda18271_list_mutex);
@ -1177,6 +1181,10 @@ struct dvb_frontend *tda18271_attach(struct dvb_frontend *fe, u8 addr,
mutex_lock(&priv->lock);
tda18271_init_regs(fe);
if ((tda18271_cal_on_startup) && (priv->id == TDA18271HDC2))
tda18271_rf_cal_init(fe);
mutex_unlock(&priv->lock);
}