Commit 74a89b2a authored by Mauro Carvalho Chehab's avatar Mauro Carvalho Chehab
Browse files

V4L/DVB (9769): tuner-xc2028: powers device of when not used 



Since the firmware load is now fast on most boards, better to keep the tuner
off by default. A modprobe parameter were added to keep the old behavior,
to be used by old devices.

Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 9e5d6760

drivers/media/common/tuners/tuner-xc2028.c

+31 −0
Original line number Original line Diff line number Diff line
@@ -28,6 +28,12 @@ static int debug; 
module_param(debug, int, 0644);

module_param(debug, int, 0644);

MODULE_PARM_DESC(debug, "enable verbose debug messages");

MODULE_PARM_DESC(debug, "enable verbose debug messages");





static int no_poweroff;

module_param(no_poweroff, int, 0644);

MODULE_PARM_DESC(debug, "0 (default) powers device off when not used.\n"

	"1 keep device energized and with tuner ready all the times.\n"

	"  Faster, but consumes more power and keeps the device hotter\n");



static char audio_std[8];

static char audio_std[8];

module_param_string(audio_std, audio_std, sizeof(audio_std), 0);

module_param_string(audio_std, audio_std, sizeof(audio_std), 0);

MODULE_PARM_DESC(audio_std,

MODULE_PARM_DESC(audio_std,
@@ -1091,6 +1097,30 @@ static int xc2028_set_params(struct dvb_frontend *fe, 
				T_DIGITAL_TV, type, 0, demod);

				T_DIGITAL_TV, type, 0, demod);

}

}





static int xc2028_sleep(struct dvb_frontend *fe)

{

	struct xc2028_data *priv = fe->tuner_priv;

	int rc = 0;



	/* Avoid firmware reload on slow devices */

	if (no_poweroff)

		return;



	tuner_dbg("Putting xc2028/3028 into poweroff mode.\n");



	mutex_lock(&priv->lock);



	if (priv->firm_version < 0x0202)

		rc = send_seq(priv, {0x00, 0x08, 0x00, 0x00});

	else

		rc = send_seq(priv, {0x80, 0x08, 0x00, 0x00});



	priv->cur_fw.type = 0;	/* need firmware reload */



	mutex_unlock(&priv->lock);



	return rc;

}





static int xc2028_dvb_release(struct dvb_frontend *fe)

static int xc2028_dvb_release(struct dvb_frontend *fe)

{

{
@@ -1171,6 +1201,7 @@ static const struct dvb_tuner_ops xc2028_dvb_tuner_ops = { 
	.get_frequency     = xc2028_get_frequency,

	.get_frequency     = xc2028_get_frequency,

	.get_rf_strength   = xc2028_signal,

	.get_rf_strength   = xc2028_signal,

	.set_params        = xc2028_set_params,

	.set_params        = xc2028_set_params,

	.sleep             = xc2028_sleep,

};

};





struct dvb_frontend *xc2028_attach(struct dvb_frontend *fe,

struct dvb_frontend *xc2028_attach(struct dvb_frontend *fe,