V4L/DVB (7436): tda18271: add basic support for slave tuner configurations
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/dvb/frontends/tda18271-fe.c b/drivers/media/dvb/frontends/tda18271-fe.c
index 46905a7..5b1cb7f 100644
--- a/drivers/media/dvb/frontends/tda18271-fe.c
+++ b/drivers/media/dvb/frontends/tda18271-fe.c
@@ -36,6 +36,15 @@
/*---------------------------------------------------------------------*/
+static inline int charge_pump_source(struct dvb_frontend *fe, int force)
+{
+ struct tda18271_priv *priv = fe->tuner_priv;
+ return tda18271_charge_pump_source(fe,
+ (priv->role == TDA18271_SLAVE) ?
+ TDA18271_CAL_PLL :
+ TDA18271_MAIN_PLL, force);
+}
+
static int tda18271_channel_configuration(struct dvb_frontend *fe,
struct tda18271_std_map_item *map,
u32 freq, u32 bw)
@@ -97,8 +106,14 @@
/* dual tuner and agc1 extra configuration */
- /* main vco when Master, cal vco when slave */
- regs[R_EB1] |= 0x04; /* FIXME: assumes master */
+ switch (priv->role) {
+ case TDA18271_MASTER:
+ regs[R_EB1] |= 0x04; /* main vco */
+ break;
+ case TDA18271_SLAVE:
+ regs[R_EB1] &= ~0x04; /* cal vco */
+ break;
+ }
/* agc1 always active */
regs[R_EB1] &= ~0x02;
@@ -112,19 +127,29 @@
N = map->if_freq * 1000 + freq;
- /* FIXME: assumes master */
- tda18271_calc_main_pll(fe, N);
- tda18271_write_regs(fe, R_MPD, 4);
+ switch (priv->role) {
+ case TDA18271_MASTER:
+ tda18271_calc_main_pll(fe, N);
+ tda18271_write_regs(fe, R_MPD, 4);
+ break;
+ case TDA18271_SLAVE:
+ tda18271_calc_cal_pll(fe, N);
+ tda18271_write_regs(fe, R_CPD, 4);
+
+ regs[R_MPD] = regs[R_CPD] & 0x7f;
+ tda18271_write_regs(fe, R_MPD, 1);
+ break;
+ }
tda18271_write_regs(fe, R_TM, 7);
- /* main pll charge pump source */
- tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 1);
+ /* force charge pump source */
+ charge_pump_source(fe, 1);
msleep(1);
- /* normal operation for the main pll */
- tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 0);
+ /* return pll to normal operation */
+ charge_pump_source(fe, 0);
msleep(20);
@@ -1058,6 +1083,7 @@
case 1:
/* new tuner instance */
priv->gate = (cfg) ? cfg->gate : TDA18271_GATE_AUTO;
+ priv->role = (cfg) ? cfg->role : TDA18271_MASTER;
priv->cal_initialized = false;
mutex_init(&priv->lock);