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| author | Manu Abraham <abraham.manu@gmail.com> | 2007-10-08 19:04:03 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2008-12-29 17:53:18 -0200 |
| commit | cf6efeb6705e9828291401f890dcb327a0ea52e7 (patch) | |
| tree | 7eccf311e6b78de7d9945ae91308fa2cc34b036b /drivers/media/dvb/frontends/tda8261.c | |
| parent | 6199ceef8bd28b79e0792423ca79cce8b224cd50 (diff) | |
| download | talos-obmc-linux-cf6efeb6705e9828291401f890dcb327a0ea52e7.tar.gz talos-obmc-linux-cf6efeb6705e9828291401f890dcb327a0ea52e7.zip | |
V4L/DVB (9419): Bug: unnecessary large current causes large phasor errors
Signed-off-by: Manu Abraham <manu@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/dvb/frontends/tda8261.c')
| -rw-r--r-- | drivers/media/dvb/frontends/tda8261.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/media/dvb/frontends/tda8261.c b/drivers/media/dvb/frontends/tda8261.c index 9cbd511d749e..1b9f4dc1b003 100644 --- a/drivers/media/dvb/frontends/tda8261.c +++ b/drivers/media/dvb/frontends/tda8261.c @@ -130,6 +130,10 @@ static int tda8261_set_state(struct dvb_frontend *fe, * (to account for half channel spacing on either side) */ frequency = tstate->frequency; + if ((frequency < 950000) || (frequency > 2150000)) { + printk("%s: Frequency beyond limits, frequency=%d\n", __func__, frequency); + return -EINVAL; + } N = (frequency + (div_tab[config->step_size] - 1)) / div_tab[config->step_size]; printk("%s: Step size=%d, Divider=%d, PG=0x%02x (%d)\n", __func__, config->step_size, div_tab[config->step_size], N, N); @@ -137,7 +141,14 @@ static int tda8261_set_state(struct dvb_frontend *fe, buf[0] = (N >> 8) & 0xff; buf[1] = N & 0xff; buf[2] = (0x01 << 7) | ((ref_div[config->step_size] & 0x07) << 1); - buf[3] = 0xc0; + + if (frequency < 1450000) + buf[3] = 0x00; + if (frequency < 2000000) + buf[3] = 0x40; + if (frequency < 2150000) + buf[3] = 0x80; + /* Set params */ if ((err = tda8261_write(state, buf)) < 0) { printk("%s: I/O Error\n", __func__); |
