提交 fb8152cb 编写于 作者: M Michael Krufky 提交者: Mauro Carvalho Chehab

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: NMichael Krufky <mkrufky@linuxtv.org>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>
上级 8973dc4b
......@@ -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;
}
......
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