[PATCH 2/4] V4L/DVB: Update tuner script for new firmware

[PATCH 2/4] V4L/DVB: Update tuner script for new firmware

[Bimow Chen]

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>From b3f9eb6e410ac317042cebdce5833dac8e276c1a Mon Sep 17 00:00:00 2001
From: Bimow Chen <Bimow.Chen@ite.com.tw>
Date: Tue, 5 Aug 2014 10:31:46 +0800
Subject: [PATCH 2/4] Update tuner script for new firmware.


Signed-off-by: Bimow Chen <Bimow.Chen@ite.com.tw>
---
 drivers/media/dvb-frontends/af9033.c      |   14 ++++++++++++++
 drivers/media/dvb-frontends/af9033_priv.h |   20 +++++++++-----------
 2 files changed, 23 insertions(+), 11 deletions(-)

diff --git a/drivers/media/dvb-frontends/af9033.c b/drivers/media/dvb-frontends/af9033.c
index be4bec2..22cb62a 100644
--- a/drivers/media/dvb-frontends/af9033.c
+++ b/drivers/media/dvb-frontends/af9033.c
@@ -274,6 +274,20 @@ static int af9033_init(struct dvb_frontend *fe)
 		{ 0x800045, state->cfg.adc_multiplier, 0xff },
 	};
 
+	/* power up tuner - for performance */
+	switch (state->cfg.tuner) {
+	case AF9033_TUNER_IT9135_38:
+	case AF9033_TUNER_IT9135_51:
+	case AF9033_TUNER_IT9135_52:
+	case AF9033_TUNER_IT9135_60:
+	case AF9033_TUNER_IT9135_61:
+	case AF9033_TUNER_IT9135_62:
+		ret = af9033_wr_reg(state, 0x80ec40, 0x1);
+		ret |= af9033_wr_reg(state, 0x80fba8, 0x0);
+		if (ret < 0)
+			goto err;
+	}
+
 	/* program clock control */
 	clock_cw = af9033_div(state, state->cfg.clock, 1000000ul, 19ul);
 	buf[0] = (clock_cw >>  0) & 0xff;
diff --git a/drivers/media/dvb-frontends/af9033_priv.h b/drivers/media/dvb-frontends/af9033_priv.h
index fc2ad58..ded7b67 100644
--- a/drivers/media/dvb-frontends/af9033_priv.h
+++ b/drivers/media/dvb-frontends/af9033_priv.h
@@ -1418,7 +1418,7 @@ static const struct reg_val tuner_init_it9135_60[] = {
 	{ 0x800068, 0x0a },
 	{ 0x80006a, 0x03 },
 	{ 0x800070, 0x0a },
-	{ 0x800071, 0x05 },
+	{ 0x800071, 0x0a },
 	{ 0x800072, 0x02 },
 	{ 0x800075, 0x8c },
 	{ 0x800076, 0x8c },
@@ -1484,7 +1484,6 @@ static const struct reg_val tuner_init_it9135_60[] = {
 	{ 0x800104, 0x02 },
 	{ 0x800105, 0xbe },
 	{ 0x800106, 0x00 },
-	{ 0x800109, 0x02 },
 	{ 0x800115, 0x0a },
 	{ 0x800116, 0x03 },
 	{ 0x80011a, 0xbe },
@@ -1510,7 +1509,6 @@ static const struct reg_val tuner_init_it9135_60[] = {
 	{ 0x80014b, 0x8c },
 	{ 0x80014d, 0xac },
 	{ 0x80014e, 0xc6 },
-	{ 0x80014f, 0x03 },
 	{ 0x800151, 0x1e },
 	{ 0x800153, 0xbc },
 	{ 0x800178, 0x09 },
@@ -1522,9 +1520,10 @@ static const struct reg_val tuner_init_it9135_60[] = {
 	{ 0x80018d, 0x5f },
 	{ 0x80018f, 0xa0 },
 	{ 0x800190, 0x5a },
-	{ 0x80ed02, 0xff },
-	{ 0x80ee42, 0xff },
-	{ 0x80ee82, 0xff },
+	{ 0x800191, 0x00 },
+	{ 0x80ed02, 0x40 },
+	{ 0x80ee42, 0x40 },
+	{ 0x80ee82, 0x40 },
 	{ 0x80f000, 0x0f },
 	{ 0x80f01f, 0x8c },
 	{ 0x80f020, 0x00 },
@@ -1699,7 +1698,6 @@ static const struct reg_val tuner_init_it9135_61[] = {
 	{ 0x800104, 0x02 },
 	{ 0x800105, 0xc8 },
 	{ 0x800106, 0x00 },
-	{ 0x800109, 0x02 },
 	{ 0x800115, 0x0a },
 	{ 0x800116, 0x03 },
 	{ 0x80011a, 0xc6 },
@@ -1725,7 +1723,6 @@ static const struct reg_val tuner_init_it9135_61[] = {
 	{ 0x80014b, 0x8c },
 	{ 0x80014d, 0xa8 },
 	{ 0x80014e, 0xc6 },
-	{ 0x80014f, 0x03 },
 	{ 0x800151, 0x28 },
 	{ 0x800153, 0xcc },
 	{ 0x800178, 0x09 },
@@ -1737,9 +1734,10 @@ static const struct reg_val tuner_init_it9135_61[] = {
 	{ 0x80018d, 0x5f },
 	{ 0x80018f, 0xfb },
 	{ 0x800190, 0x5c },
-	{ 0x80ed02, 0xff },
-	{ 0x80ee42, 0xff },
-	{ 0x80ee82, 0xff },
+	{ 0x800191, 0x00 },
+	{ 0x80ed02, 0x40 },
+	{ 0x80ee42, 0x40 },
+	{ 0x80ee82, 0x40 },
 	{ 0x80f000, 0x0f },
 	{ 0x80f01f, 0x8c },
 	{ 0x80f020, 0x00 },
-- 
1.7.0.4

Re: [PATCH 2/4] V4L/DVB: Update tuner script for new firmware

[Antti Palosaari]

I applied that too, but removed those register writes you added to 
af9033 driver. Patch commit message was totally missing and I did a 
*lot* of reverse-engineering in order to understand patch (actually all 
these patches).

What I discovered, not sure if correct, but that patch updates IT9135 BX 
chipset tuner related inittabs. Tuner config 60 and 61 was updated. I 
take latest IT9135 windows driver binary from Hauppauge and extracted 
inittab for tuner 60. It was just same as here. So I suspect these tabs 
are just same than latest windows. Firmware is likely same too, but I 
was too lazy to dump it out from windows driver and compare...

Also, what I suspect, the 0xfba8 register write I removed from that 
patch, is some clock output provided by demod core. That is clock source 
for tuner, right?

regards
Antti

-- 
http://palosaari.fi/