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| author | Michael Krufky <mkrufky@linuxtv.org> | 2008-04-06 02:13:05 (GMT) |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2008-04-24 17:09:43 (GMT) |
| commit | fb8152cb01dc2bca04a6ee561920d0a02af6c73b (patch) | |
| tree | 24ce9b01afa8e9f0d8c498258a20db892ec28bbc | |
| parent | 8973dc4b70c5506596207da3fddab03002357178 (diff) | |
| download | linux-fb8152cb01dc2bca04a6ee561920d0a02af6c73b.tar.xz | |
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>
| -rw-r--r-- | drivers/media/dvb/frontends/au8522.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/media/dvb/frontends/au8522.c b/drivers/media/dvb/frontends/au8522.c index 9fb61e6..d445cf1 100644 --- a/drivers/media/dvb/frontends/au8522.c +++ b/drivers/media/dvb/frontends/au8522.c @@ -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; } |