[PATCH 2/2] lgdt3305: add support for fixed tp clock mode

[PATCH 2/2] lgdt3305: add support for fixed tp clock mode

[Michael Krufky]

From: Michael Ira Krufky <mkrufky@linuxtv.org>

Add support for controlling TP clock mode for VSB and QAM annex-B/C mode.
Gated clock mode is the default value, and does not support QAM annex-C.
The patch enables setting this control to fixed clock mode.

Signed-off-by: Michael Ira Krufky <mkrufky@linuxtv.org>
---
 drivers/media/dvb-frontends/lgdt3305.c | 3 +++
 drivers/media/dvb-frontends/lgdt3305.h | 6 ++++++
 2 files changed, 9 insertions(+)

diff --git a/drivers/media/dvb-frontends/lgdt3305.c b/drivers/media/dvb-frontends/lgdt3305.c
index b42d649..873c63a 100644
--- a/drivers/media/dvb-frontends/lgdt3305.c
+++ b/drivers/media/dvb-frontends/lgdt3305.c
@@ -241,6 +241,7 @@ static int lgdt3305_mpeg_mode_polarity(struct lgdt3305_state *state)
 	u8 val;
 	int ret;
 	enum lgdt3305_tp_clock_edge edge = state->cfg->tpclk_edge;
+	enum lgdt3305_tp_clock_mode mode = state->cfg->tpclk_mode;
 	enum lgdt3305_tp_valid_polarity valid = state->cfg->tpvalid_polarity;
 
 	lg_dbg("edge = %d, valid = %d\n", edge, valid);
@@ -253,6 +254,8 @@ static int lgdt3305_mpeg_mode_polarity(struct lgdt3305_state *state)
 
 	if (edge)
 		val |= 0x08;
+	if (mode)
+		val |= 0x40;
 	if (valid)
 		val |= 0x01;
 
diff --git a/drivers/media/dvb-frontends/lgdt3305.h b/drivers/media/dvb-frontends/lgdt3305.h
index d9ab556..9c03e53 100644
--- a/drivers/media/dvb-frontends/lgdt3305.h
+++ b/drivers/media/dvb-frontends/lgdt3305.h
@@ -37,6 +37,11 @@ enum lgdt3305_tp_clock_edge {
 	LGDT3305_TPCLK_FALLING_EDGE = 1,
 };
 
+enum lgdt3305_tp_clock_mode {
+	LGDT3305_TPCLK_GATED = 0,
+	LGDT3305_TPCLK_FIXED = 1,
+};
+
 enum lgdt3305_tp_valid_polarity {
 	LGDT3305_TP_VALID_LOW = 0,
 	LGDT3305_TP_VALID_HIGH = 1,
@@ -70,6 +75,7 @@ struct lgdt3305_config {
 
 	enum lgdt3305_mpeg_mode mpeg_mode;
 	enum lgdt3305_tp_clock_edge tpclk_edge;
+	enum lgdt3305_tp_clock_mode tpclk_mode;
 	enum lgdt3305_tp_valid_polarity tpvalid_polarity;
 	enum lgdt_demod_chip_type demod_chip;
 };
-- 
2.1.0