From 6b82e0cfc15ec7e635eea83b04e1544ab64f81ad Mon Sep 17 00:00:00 2001 From: Michael Krufky Date: Mon, 1 Oct 2012 23:50:37 -0300 Subject: [PATCH] [media] tda18271: delay IR & RF calibration until init() if delay_cal is set if the configuration option 'delay_cal' is set, delay both IR & RF calibration until init() is called. both module option 'cal' or configuration option 'rf_cal_on_startup' will override this delay. it makes no sense to mix 'delay_cal' with 'rf_cal_on_startup' as these options conflict with each other. Signed-off-by: Michael Krufky Signed-off-by: Mauro Carvalho Chehab --- drivers/media/tuners/tda18271-fe.c | 5 +++++ drivers/media/tuners/tda18271.h | 5 +++++ 2 files changed, 10 insertions(+) diff --git a/drivers/media/tuners/tda18271-fe.c b/drivers/media/tuners/tda18271-fe.c index de21197ca4b9..ca202da9d4c9 100644 --- a/drivers/media/tuners/tda18271-fe.c +++ b/drivers/media/tuners/tda18271-fe.c @@ -1278,6 +1278,11 @@ struct dvb_frontend *tda18271_attach(struct dvb_frontend *fe, u8 addr, if (tda_fail(ret)) goto fail; + /* if delay_cal is set, delay IR & RF calibration until init() + * module option 'cal' overrides this delay */ + if ((cfg->delay_cal) && (!tda18271_need_cal_on_startup(cfg))) + break; + mutex_lock(&priv->lock); tda18271_init_regs(fe); diff --git a/drivers/media/tuners/tda18271.h b/drivers/media/tuners/tda18271.h index 640bae4e6a5a..89b6c6d93fec 100644 --- a/drivers/media/tuners/tda18271.h +++ b/drivers/media/tuners/tda18271.h @@ -105,6 +105,11 @@ struct tda18271_config { /* force rf tracking filter calibration on startup */ unsigned int rf_cal_on_startup:1; + /* prevent any register access during attach(), + * delaying both IR & RF calibration until init() + * module option 'cal' overrides this delay */ + unsigned int delay_cal:1; + /* interface to saa713x / tda829x */ unsigned int config; }; -- 2.34.1