From: Olli Salonen Date: Mon, 25 Aug 2014 18:07:02 +0000 (-0300) Subject: [media] si2157: change command for sleep X-Git-Tag: firefly_0821_release~176^2~2474^2~609 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=0e38233d329e463a64146080c008d8044651bd3f;p=firefly-linux-kernel-4.4.55.git [media] si2157: change command for sleep Instead of sending command 13 to the tuner, send command 16 when sleeping. This behaviour is observed when using manufacturer provided binary-only Linux driver for TechnoTrend CT2-4400 (Windows driver does not do power management). The issue with command 13 is that firmware loading is necessary after that. This is not an issue with tuners that do not require firmware, but starting streaming after sleep on an Si2158 takes noticeable time as firmware is loaded on resume. Signed-off-by: Olli Salonen Signed-off-by: Antti Palosaari Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/tuners/si2157.c b/drivers/media/tuners/si2157.c index efb5cced30a5..c84f7b8ee8d2 100644 --- a/drivers/media/tuners/si2157.c +++ b/drivers/media/tuners/si2157.c @@ -197,9 +197,10 @@ static int si2157_sleep(struct dvb_frontend *fe) s->active = false; - memcpy(cmd.args, "\x13", 1); - cmd.wlen = 1; - cmd.rlen = 0; + /* standby */ + memcpy(cmd.args, "\x16\x00", 2); + cmd.wlen = 2; + cmd.rlen = 1; ret = si2157_cmd_execute(s, &cmd); if (ret) goto err;