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V4L/DVB (9462): Allow specifying clock per device 

Optimizations galore: Blistering barnacles! The KNC1 and friends
like 90 Mhz clock much better rather than running at a higher
throttle, for almost similar hardware. he exact cause unknown,
possibly due to a lower voltage applied for the demod power supply.

Signed-off-by: Manu Abraham <manu@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Manu Abraham 2008-03-04 19:19:58 -03:00 committed by Mauro Carvalho Chehab
parent ef3052bc98
commit b91a7cb026
4 changed files with 11 additions and 2 deletions
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5
drivers/media/dvb/frontends/stb0899_drv.c
View File

@ -1534,6 +1534,7 @@ static enum dvbfe_search stb0899_search(struct dvb_frontend *fe, struct dvbfe_pa
struct stb0899_state *state = fe->demodulator_priv;
struct stb0899_params *i_params = &state->params;
struct stb0899_internal *internal = &state->internal;
struct stb0899_config *config = state->config;
u32 SearchRange, gain;
@ -1575,9 +1576,9 @@ static enum dvbfe_search stb0899_search(struct dvb_frontend *fe, struct dvbfe_pa
}
if (i_params->srate <= 5000000)
stb0899_set_mclk(state, 76500000);
stb0899_set_mclk(state, config->lo_clk);
else
stb0899_set_mclk(state, 99000000);
stb0899_set_mclk(state, config->hi_clk);
switch (state->delsys) {
case DVBFE_DELSYS_DVBS:

2
drivers/media/dvb/frontends/stb0899_drv.h
View File

@ -117,6 +117,8 @@ struct stb0899_config {
u8 out_rate_comp;
u8 i2c_repeater;
// int inversion;
int lo_clk;
int hi_clk;
u32 esno_ave;
u32 esno_quant;

3
drivers/media/dvb/ttpci/budget-av.c
View File

@ -1127,6 +1127,9 @@ static struct stb0899_config knc1_dvbs2_config = {
.xtal_freq = 27000000,
.inversion = IQ_SWAP_OFF, /* 1 */
.lo_clk = 76500000,
.hi_clk = 90000000,
.esno_ave = STB0899_DVBS2_ESNO_AVE,
.esno_quant = STB0899_DVBS2_ESNO_QUANT,
.avframes_coarse = STB0899_DVBS2_AVFRAMES_COARSE,

3
drivers/media/dvb/ttpci/budget-ci.c
View File

@ -1312,6 +1312,9 @@ static struct stb0899_config tt3200_config = {
.xtal_freq = 27000000,
.inversion = IQ_SWAP_ON, /* 1 */
.lo_clk = 76500000,
.hi_clk = 99000000,
.esno_ave = STB0899_DVBS2_ESNO_AVE,
.esno_quant = STB0899_DVBS2_ESNO_QUANT,
.avframes_coarse = STB0899_DVBS2_AVFRAMES_COARSE,