add function au8522_read_mse, which will be used to compute snr
TO DO: mse2snr
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
+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__);
static int au8522_read_snr(struct dvb_frontend *fe, u16 *snr)
{
dprintk("%s()\n", __func__);
+ /* FIXME: This is mse, not snr
+ * TODO: mse2snr */
+ *snr = au8522_read_mse(fe);