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| author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2013-04-08 04:07:47 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2013-04-08 14:12:19 +0400 |
| commit | 0562aef296c251e50b0934e6af113c511349dd9c (patch) | |
| tree | 4eed80136b101379a769208bf19736200c20d477 /drivers/media/dvb-frontends/mb86a20s.c | |
| parent | b1f89331190820c42397156063fe5e39bc514e3b (diff) | |
| download | linux-0562aef296c251e50b0934e6af113c511349dd9c.tar.xz | |
[media] mb86a20s: better name temp vars at mb86a20s_layer_bitrate()
Using 'i' for the guard interval temporary var is a bad idea, as
'i' is generally used by "anonymous" indexes.
Let's rename modulation, fec and guard interval temp vars with
a meaningful name, as that makes easier to understand the code
and avoids cut-and-paste types of error.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/dvb-frontends/mb86a20s.c')
| -rw-r--r-- | drivers/media/dvb-frontends/mb86a20s.c | 37 |
1 files changed, 19 insertions, 18 deletions
diff --git a/drivers/media/dvb-frontends/mb86a20s.c b/drivers/media/dvb-frontends/mb86a20s.c index d25df75ed404..856374bd3676 100644 --- a/drivers/media/dvb-frontends/mb86a20s.c +++ b/drivers/media/dvb-frontends/mb86a20s.c @@ -566,12 +566,13 @@ static u32 isdbt_rate[3][5][4] = { }; static void mb86a20s_layer_bitrate(struct dvb_frontend *fe, u32 layer, - u32 modulation, u32 fec, u32 interleaving, + u32 modulation, u32 forward_error_correction, + u32 interleaving, u32 segment) { struct mb86a20s_state *state = fe->demodulator_priv; u32 rate; - int m, f, i; + int mod, fec, guard; /* * If modulation/fec/interleaving is not detected, the default is @@ -582,54 +583,54 @@ static void mb86a20s_layer_bitrate(struct dvb_frontend *fe, u32 layer, case DQPSK: case QPSK: default: - m = 0; + mod = 0; break; case QAM_16: - m = 1; + mod = 1; break; case QAM_64: - m = 2; + mod = 2; break; } - switch (fec) { + switch (forward_error_correction) { default: case FEC_1_2: case FEC_AUTO: - f = 0; + fec = 0; break; case FEC_2_3: - f = 1; + fec = 1; break; case FEC_3_4: - f = 2; + fec = 2; break; case FEC_5_6: - f = 3; + fec = 3; break; case FEC_7_8: - f = 4; + fec = 4; break; } switch (interleaving) { default: case GUARD_INTERVAL_1_4: - i = 0; + guard = 0; break; case GUARD_INTERVAL_1_8: - i = 1; + guard = 1; break; case GUARD_INTERVAL_1_16: - i = 2; + guard = 2; break; case GUARD_INTERVAL_1_32: - i = 3; + guard = 3; break; } /* Samples BER at BER_SAMPLING_RATE seconds */ - rate = isdbt_rate[m][f][i] * segment * BER_SAMPLING_RATE; + rate = isdbt_rate[mod][fec][guard] * segment * BER_SAMPLING_RATE; /* Avoids sampling too quickly or to overflow the register */ if (rate < 256) @@ -639,13 +640,13 @@ static void mb86a20s_layer_bitrate(struct dvb_frontend *fe, u32 layer, dev_dbg(&state->i2c->dev, "%s: layer %c bitrate: %d kbps; counter = %d (0x%06x)\n", - __func__, 'A' + layer, segment * isdbt_rate[m][f][i]/1000, + __func__, 'A' + layer, + segment * isdbt_rate[mod][fec][guard]/1000, rate, rate); state->estimated_rate[layer] = rate; } - static int mb86a20s_get_frontend(struct dvb_frontend *fe) { struct mb86a20s_state *state = fe->demodulator_priv; |