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Commit 20dafb3b authored by Ales Jurik's avatar Ales Jurik Committed by Mauro Carvalho Chehab
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V4L/DVB (9470): Disable PLL Loop while tuning 



Signed-off-by: default avatarAles Jurik <ajurik@quick.cz>
Signed-off-by: default avatarManu Abraham <manu@linuxtv.org>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 3f400925

drivers/media/dvb/frontends/stb6100.c

+11 −1
Original line number Diff line number Diff line
@@ -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);