diff options
Diffstat (limited to 'drivers/media/dvb/frontends/au8522.c')
| -rw-r--r-- | drivers/media/dvb/frontends/au8522.c | 47 |
1 files changed, 40 insertions, 7 deletions
diff --git a/drivers/media/dvb/frontends/au8522.c b/drivers/media/dvb/frontends/au8522.c index f7b7165..0b82cc2 100644 --- a/drivers/media/dvb/frontends/au8522.c +++ b/drivers/media/dvb/frontends/au8522.c @@ -1,7 +1,7 @@ /* Auvitek AU8522 QAM/8VSB demodulator driver - Copyright (C) 2008 Steven Toth <stoth@hauppauge.com> + Copyright (C) 2008 Steven Toth <stoth@linuxtv.org> This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -304,6 +304,43 @@ static int au8522_mse2snr_lookup(struct mse2snr_tab *tab, int sz, int mse, return ret; } +static int au8522_set_if(struct dvb_frontend *fe, enum au8522_if_freq if_freq) +{ + struct au8522_state *state = fe->demodulator_priv; + u8 r0b5, r0b6, r0b7; + char *ifmhz; + + switch (if_freq) { + case AU8522_IF_3_25MHZ: + ifmhz = "3.25"; + r0b5 = 0x00; + r0b6 = 0x3d; + r0b7 = 0xa0; + break; + case AU8522_IF_4MHZ: + ifmhz = "4.00"; + r0b5 = 0x00; + r0b6 = 0x4b; + r0b7 = 0xd9; + break; + case AU8522_IF_6MHZ: + ifmhz = "6.00"; + r0b5 = 0xfb; + r0b6 = 0x8e; + r0b7 = 0x39; + break; + default: + dprintk("%s() IF Frequency not supported\n", __func__); + return -EINVAL; + } + dprintk("%s() %s MHz\n", __func__, ifmhz); + au8522_writereg(state, 0x80b5, r0b5); + au8522_writereg(state, 0x80b6, r0b6); + au8522_writereg(state, 0x80b7, r0b7); + + return 0; +} + /* VSB Modulation table */ static struct { u16 reg; @@ -334,9 +371,6 @@ static struct { { 0x80af, 0x66 }, { 0x821b, 0xcc }, { 0x821d, 0x80 }, - { 0x80b5, 0xfb }, - { 0x80b6, 0x8e }, - { 0x80b7, 0x39 }, { 0x80a4, 0xe8 }, { 0x8231, 0x13 }, }; @@ -350,9 +384,6 @@ static struct { { 0x80a4, 0x00 }, { 0x8081, 0xc4 }, { 0x80a5, 0x40 }, - { 0x80b5, 0xfb }, - { 0x80b6, 0x8e }, - { 0x80b7, 0x39 }, { 0x80aa, 0x77 }, { 0x80ad, 0x77 }, { 0x80a6, 0x67 }, @@ -438,6 +469,7 @@ static int au8522_enable_modulation(struct dvb_frontend *fe, au8522_writereg(state, VSB_mod_tab[i].reg, VSB_mod_tab[i].data); + au8522_set_if(fe, state->config->vsb_if); break; case QAM_64: case QAM_256: @@ -446,6 +478,7 @@ static int au8522_enable_modulation(struct dvb_frontend *fe, au8522_writereg(state, QAM_mod_tab[i].reg, QAM_mod_tab[i].data); + au8522_set_if(fe, state->config->qam_if); break; default: dprintk("%s() Invalid modulation\n", __func__); |
