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| author | Andreas Regel <andreas.regel@gmx.de> | 2009-11-14 00:16:44 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-12-05 23:41:29 +0300 |
| commit | b4a4248d56a6985f5d37fc5a219ba0675fc6f503 (patch) | |
| tree | fa45bffdd5547fe41ec2fec166c484a6459dbc36 /drivers/media/dvb/frontends/stv090x.c | |
| parent | b671a8d4b68626142a9a34da59c55396d2cf0ce9 (diff) | |
| download | linux-b4a4248d56a6985f5d37fc5a219ba0675fc6f503.tar.xz | |
V4L/DVB (13355): stv090x: fixes calculation of AGC2 and uses a different AGC2 threshold for cut 3 chips
Signed-off-by: Andreas Regel <andreas.regel@gmx.de>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/dvb/frontends/stv090x.c')
| -rw-r--r-- | drivers/media/dvb/frontends/stv090x.c | 33 |
1 files changed, 22 insertions, 11 deletions
diff --git a/drivers/media/dvb/frontends/stv090x.c b/drivers/media/dvb/frontends/stv090x.c index fe03bac5b2e4..8c0d351405f3 100644 --- a/drivers/media/dvb/frontends/stv090x.c +++ b/drivers/media/dvb/frontends/stv090x.c @@ -1485,7 +1485,7 @@ err: static int stv090x_get_agc2_min_level(struct stv090x_state *state) { - u32 agc2_min = 0, agc2 = 0, freq_init, freq_step, reg; + u32 agc2_min = 0xffff, agc2 = 0, freq_init, freq_step, reg; s32 i, j, steps, dir; if (STV090x_WRITE_DEMOD(state, AGC2REF, 0x38) < 0) @@ -1536,13 +1536,14 @@ static int stv090x_get_agc2_min_level(struct stv090x_state *state) if (STV090x_WRITE_DEMOD(state, DMDISTATE, 0x58) < 0) /* Demod RESET */ goto err; msleep(10); + + agc2 = 0; for (j = 0; j < 10; j++) { - agc2 += STV090x_READ_DEMOD(state, AGC2I1) << 8; - agc2 |= STV090x_READ_DEMOD(state, AGC2I0); + agc2 += (STV090x_READ_DEMOD(state, AGC2I1) << 8) | + STV090x_READ_DEMOD(state, AGC2I0); } agc2 /= 10; - agc2_min = 0xffff; - if (agc2 < 0xffff) + if (agc2 < agc2_min) agc2_min = agc2; } @@ -1584,6 +1585,12 @@ static u32 stv090x_srate_srch_coarse(struct stv090x_state *state) int tmg_lock = 0, i; s32 tmg_cpt = 0, dir = 1, steps, cur_step = 0, freq; u32 srate_coarse = 0, agc2 = 0, car_step = 1200, reg; + u32 agc2th; + + if (state->dev_ver >= 0x30) + agc2th = 0x2e00; + else + agc2th = 0x1f00; reg = STV090x_READ_DEMOD(state, DMDISTATE); STV090x_SETFIELD_Px(reg, I2C_DEMOD_MODE_FIELD, 0x1f); /* Demod RESET */ @@ -1611,7 +1618,7 @@ static u32 stv090x_srate_srch_coarse(struct stv090x_state *state) goto err; if (STV090x_WRITE_DEMOD(state, DMDTOM, 0x00) < 0) goto err; - if (STV090x_WRITE_DEMOD(state, AGC2REF, 0x60) < 0) + if (STV090x_WRITE_DEMOD(state, AGC2REF, 0x50) < 0) goto err; if (state->dev_ver >= 0x30) { @@ -1661,14 +1668,15 @@ static u32 stv090x_srate_srch_coarse(struct stv090x_state *state) reg = STV090x_READ_DEMOD(state, DSTATUS); if (STV090x_GETFIELD_Px(reg, TMGLOCK_QUALITY_FIELD) >= 2) tmg_cpt++; - agc2 += STV090x_READ_DEMOD(state, AGC2I1) << 8; - agc2 |= STV090x_READ_DEMOD(state, AGC2I0); + agc2 += (STV090x_READ_DEMOD(state, AGC2I1) << 8) | + STV090x_READ_DEMOD(state, AGC2I0); } agc2 /= 10; srate_coarse = stv090x_get_srate(state, state->mclk); cur_step++; dir *= -1; - if ((tmg_cpt >= 5) && (agc2 < 0x1f00) && (srate_coarse < 55000000) && (srate_coarse > 850000)) + if ((tmg_cpt >= 5) && (agc2 < agc2th) && + (srate_coarse < 50000000) && (srate_coarse > 850000)) tmg_lock = 1; else if (cur_step < steps) { if (dir > 0) @@ -1751,6 +1759,9 @@ static u32 stv090x_srate_srch_fine(struct stv090x_state *state) if (STV090x_WRITE_DEMOD(state, DMDCFGMD, reg) < 0) goto err; + if (STV090x_WRITE_DEMOD(state, AGC2REF, 0x38) < 0) + goto err; + if (state->dev_ver >= 0x30) { if (STV090x_WRITE_DEMOD(state, CARFREQ, 0x79) < 0) goto err; @@ -1908,8 +1919,8 @@ static int stv090x_blind_search(struct stv090x_state *state) cpt_fail = 0; agc2_ovflw = 0; for (i = 0; i < 10; i++) { - agc2 = STV090x_READ_DEMOD(state, AGC2I1) << 8; - agc2 |= STV090x_READ_DEMOD(state, AGC2I0); + agc2 += (STV090x_READ_DEMOD(state, AGC2I1) << 8) | + STV090x_READ_DEMOD(state, AGC2I0); if (agc2 >= 0xff00) agc2_ovflw++; reg = STV090x_READ_DEMOD(state, DSTATUS2); |