提交 20dafb3b 编写于 作者: A Ales Jurik 提交者: Mauro Carvalho Chehab

V4L/DVB (9470): Disable PLL Loop while tuning

Signed-off-by: NAles Jurik <ajurik@quick.cz>
Signed-off-by: NManu Abraham <manu@linuxtv.org>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
上级 3f400925
......@@ -320,6 +320,13 @@ static int stb6100_set_frequency(struct dvb_frontend *fe, u32 frequency)
}
srate = p.u.qpsk.symbol_rate;
regs[STB6100_DLB] = 0xdc;
/* Disable LPEN */
regs[STB6100_LPEN] &= ~STB6100_LPEN_LPEN; /* PLL Loop disabled */
if ((rc = stb6100_write_regs(state, regs)) < 0)
return rc;
/* Baseband gain. */
if (srate >= 15000000)
g = 9; // +4 dB
......@@ -376,9 +383,11 @@ static int stb6100_set_frequency(struct dvb_frontend *fe, u32 frequency)
/* Power up. */
regs[STB6100_LPEN] |= STB6100_LPEN_SYNP | STB6100_LPEN_OSCP | STB6100_LPEN_BEN;
msleep(2);
if ((rc = stb6100_write_regs(state, regs)) < 0)
return rc;
msleep(2);
regs[STB6100_LPEN] |= STB6100_LPEN_LPEN; /* PLL loop enabled */
if ((rc = stb6100_write_reg(state, STB6100_LPEN, regs[STB6100_LPEN])) < 0)
return rc;
......@@ -393,7 +402,8 @@ static int stb6100_set_frequency(struct dvb_frontend *fe, u32 frequency)
if ((rc = stb6100_write_reg(state, STB6100_VCO, regs[STB6100_VCO])) < 0)
return rc;
regs[STB6100_FCCK] &= ~STB6100_FCCK_FCCK; /* LPF BW clock disabled */
if ((rc = stb6100_write_reg(state, STB6100_FCCK, regs[STB6100_FCCK])) < 0)
stb6100_normalise_regs(regs);
if ((rc = stb6100_write_reg_range(state, &regs[1], 1, STB6100_NUMREGS - 3)) < 0)
return rc;
msleep(30);
......
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