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: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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@ -321,11 +321,28 @@ static int au8522_read_status(struct dvb_frontend *fe, fe_status_t *status)
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return 0;
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return 0;
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}
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}
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static int au8522_read_mse(struct dvb_frontend *fe)
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{
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struct au8522_state *state = fe->demodulator_priv;
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int mse = 0;
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if (state->current_modulation == VSB_8)
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mse = au8522_readreg(state, 0x4311);
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else
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mse = au8522_readreg(state, 0x4522);
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dprintk("%s: %d\n", __func__, mse);
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return mse;
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}
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static int au8522_read_snr(struct dvb_frontend *fe, u16 *snr)
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static int au8522_read_snr(struct dvb_frontend *fe, u16 *snr)
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{
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{
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dprintk("%s()\n", __func__);
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dprintk("%s()\n", __func__);
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*snr = 0;
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/* FIXME: This is mse, not snr
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* TODO: mse2snr */
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*snr = au8522_read_mse(fe);
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return 0;
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return 0;
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}
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}
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