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Subject[PATCH 057/141] V4L/DVB (3303): TDA8290 update
Date
From: Hartmut Hackmann <hartmut.hackmann@t-online.de>
Date: 1139302149 -0200

This patch
- works around a bug in the I2C bridge that makes the initialization
of the TDA10046 fail on recent LifeView cards
- puts the AGC output to tristate in sleep mode. This is necessary for
recent hybrid cards that switch the AGC via tristateing.

Signed-off-by: Hartmut Hackmann<hartmut.hackmann@t-online.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
---
diff --git a/drivers/media/video/tda8290.c b/drivers/media/video/tda8290.c
diff --git a/drivers/media/video/tda8290.c b/drivers/media/video/tda8290.c
index 7b4fb28..2b954b3 100644
--- a/drivers/media/video/tda8290.c
+++ b/drivers/media/video/tda8290.c
@@ -281,7 +281,7 @@ static void tda827xa_agcf(struct i2c_cli
static void tda8290_i2c_bridge(struct i2c_client *c, int close)
{
unsigned char enable[2] = { 0x21, 0xC0 };
- unsigned char disable[2] = { 0x21, 0x80 };
+ unsigned char disable[2] = { 0x21, 0x00 };
unsigned char *msg;
if(close) {
msg = enable;
@@ -302,6 +302,7 @@ static int tda8290_tune(struct i2c_clien
unsigned char soft_reset[] = { 0x00, 0x00 };
unsigned char easy_mode[] = { 0x01, t->tda8290_easy_mode };
unsigned char expert_mode[] = { 0x01, 0x80 };
+ unsigned char agc_out_on[] = { 0x02, 0x00 };
unsigned char gainset_off[] = { 0x28, 0x14 };
unsigned char if_agc_spd[] = { 0x0f, 0x88 };
unsigned char adc_head_6[] = { 0x05, 0x04 };
@@ -320,6 +321,7 @@ static int tda8290_tune(struct i2c_clien
pll_stat;

i2c_master_send(c, easy_mode, 2);
+ i2c_master_send(c, agc_out_on, 2);
i2c_master_send(c, soft_reset, 2);
msleep(1);

@@ -470,6 +472,7 @@ static void standby(struct i2c_client *c
struct tuner *t = i2c_get_clientdata(c);
unsigned char cb1[] = { 0x30, 0xD0 };
unsigned char tda8290_standby[] = { 0x00, 0x02 };
+ unsigned char tda8290_agc_tri[] = { 0x02, 0x20 };
struct i2c_msg msg = {.addr = t->tda827x_addr, .flags=0, .buf=cb1, .len = 2};

tda8290_i2c_bridge(c, 1);
@@ -477,6 +480,7 @@ static void standby(struct i2c_client *c
cb1[1] = 0x90;
i2c_transfer(c->adapter, &msg, 1);
tda8290_i2c_bridge(c, 0);
+ i2c_master_send(c, tda8290_agc_tri, 2);
i2c_master_send(c, tda8290_standby, 2);
}

@@ -565,7 +569,7 @@ int tda8290_init(struct i2c_client *c)
strlcpy(c->name, "tda8290+75a", sizeof(c->name));
t->tda827x_ver = 2;
}
- tuner_info("tuner: type set to %s\n", c->name);
+ tuner_info("type set to %s\n", c->name);

t->set_tv_freq = set_tv_freq;
t->set_radio_freq = set_radio_freq;
-
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