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Commit 4efb0ca5 authored by Michael Krufky's avatar Michael Krufky Committed by Mauro Carvalho Chehab
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V4L/DVB (7435): tda18271: add function tda18271_charge_pump_source 



Force the main pll charge pump or cal pll charge pump to source current
to the main pll loop filter or cal pll loop filter, respectively.

Signed-off-by: default avatarMichael Krufky <mkrufky@linuxtv.org>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@infradead.org>
parent 40194b2b

drivers/media/dvb/frontends/tda18271-common.c

+17 −4
Original line number Diff line number Diff line
@@ -217,6 +217,21 @@ int tda18271_write_regs(struct dvb_frontend *fe, int idx, int len) 


/*---------------------------------------------------------------------*/



int tda18271_charge_pump_source(struct dvb_frontend *fe,

				enum tda18271_pll pll, int force)

{

	struct tda18271_priv *priv = fe->tuner_priv;

	unsigned char *regs = priv->tda18271_regs;



	int r_cp = (pll == TDA18271_CAL_PLL) ? R_EB7 : R_EB4;



	regs[r_cp] &= ~0x20;

	regs[r_cp] |= ((force & 1) << 5);

	tda18271_write_regs(fe, r_cp, 1);



	return 0;

}



int tda18271_init_regs(struct dvb_frontend *fe)

{

	struct tda18271_priv *priv = fe->tuner_priv;
@@ -359,13 +374,11 @@ int tda18271_init_regs(struct dvb_frontend *fe) 


	if ((priv->id) == TDA18271HDC2) {

		/* main pll cp source on */

		regs[R_EB4] = 0x61;

		tda18271_write_regs(fe, R_EB4, 1);

		tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 1);

		msleep(1);



		/* main pll cp source off */

		regs[R_EB4] = 0x41;

		tda18271_write_regs(fe, R_EB4, 1);

		tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 0);

	}



	msleep(5); /* pll locking */

drivers/media/dvb/frontends/tda18271-fe.c

+6 −12
Original line number Diff line number Diff line
@@ -119,14 +119,12 @@ static int tda18271_channel_configuration(struct dvb_frontend *fe, 
	tda18271_write_regs(fe, R_TM, 7);



	/* main pll charge pump source */

	regs[R_EB4] |= 0x20;

	tda18271_write_regs(fe, R_EB4, 1);

	tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 1);



	msleep(1);



	/* normal operation for the main pll */

	regs[R_EB4] &= ~0x20;

	tda18271_write_regs(fe, R_EB4, 1);

	tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 0);



	msleep(20);
@@ -285,12 +283,10 @@ static int tda18271_calibrate_rf(struct dvb_frontend *fe, u32 freq) 
	tda18271_write_regs(fe, R_EB13, 1);



	/* main pll charge pump source */

	regs[R_EB4]  |= 0x20;

	tda18271_write_regs(fe, R_EB4, 1);

	tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 1);



	/* cal pll charge pump source */

	regs[R_EB7]  |= 0x20;

	tda18271_write_regs(fe, R_EB7, 1);

	tda18271_charge_pump_source(fe, TDA18271_CAL_PLL, 1);



	/* force dcdc converter to 0 V */

	regs[R_EB14] = 0x00;
@@ -328,12 +324,10 @@ static int tda18271_calibrate_rf(struct dvb_frontend *fe, u32 freq) 
	/* --------------------------------------------------------------- */



	/* normal operation for the main pll */

	regs[R_EB4] &= ~0x20;

	tda18271_write_regs(fe, R_EB4, 1);

	tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 0);



	/* normal operation for the cal pll  */

	regs[R_EB7] &= ~0x20;

	tda18271_write_regs(fe, R_EB7, 1);

	tda18271_charge_pump_source(fe, TDA18271_CAL_PLL, 0);



	msleep(10); /* plls locking */

drivers/media/dvb/frontends/tda18271-priv.h

+7 −0
Original line number Diff line number Diff line
@@ -86,6 +86,11 @@ struct tda18271_rf_tracking_filter_cal { 
	int rf_b2;

};



enum tda18271_pll {

	TDA18271_MAIN_PLL,

	TDA18271_CAL_PLL,

};



enum tda18271_mode {

	TDA18271_ANALOG,

	TDA18271_DIGITAL,
@@ -188,6 +193,8 @@ extern int tda18271_read_extended(struct dvb_frontend *fe); 
extern int tda18271_write_regs(struct dvb_frontend *fe, int idx, int len);

extern int tda18271_init_regs(struct dvb_frontend *fe);



extern int tda18271_charge_pump_source(struct dvb_frontend *fe,

				       enum tda18271_pll pll, int force);

extern int tda18271_set_standby_mode(struct dvb_frontend *fe,

				     int sm, int sm_lt, int sm_xt);