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Commit fb8152cb authored by Michael Krufky's avatar Michael Krufky Committed by Mauro Carvalho Chehab
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V4L/DVB (7631): au8522: add function au8522_read_mse 



add function au8522_read_mse, which will be used to compute snr

TO DO: mse2snr

Signed-off-by: default avatarMichael Krufky <mkrufky@linuxtv.org>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@infradead.org>
parent 8973dc4b

drivers/media/dvb/frontends/au8522.c

+18 −1
Original line number Diff line number Diff line
@@ -321,11 +321,28 @@ static int au8522_read_status(struct dvb_frontend *fe, fe_status_t *status) 
	return 0;

}



static int au8522_read_mse(struct dvb_frontend *fe)

{

	struct au8522_state *state = fe->demodulator_priv;

	int mse = 0;



	if (state->current_modulation == VSB_8)

		mse = au8522_readreg(state, 0x4311);

	else

		mse = au8522_readreg(state, 0x4522);



	dprintk("%s: %d\n", __func__, mse);



	return mse;

}



static int au8522_read_snr(struct dvb_frontend *fe, u16 *snr)

{

	dprintk("%s()\n", __func__);



	*snr = 0;

	/* FIXME: This is mse, not snr

	 * TODO: mse2snr */

	*snr = au8522_read_mse(fe);



	return 0;

}