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authorSteven Toth <stoth@hauppauge.com>2008-01-10 03:43:11 -0300
committerMauro Carvalho Chehab <mchehab@infradead.org>2008-01-25 19:04:50 -0200
commita57ed8a1f7381aa7e1bec6c55d5f119706f2982d (patch)
tree0d9e8777cd884f8faf048c2b892891acec92d8cd /drivers/media
parent7b8880140ff6aec6a5bec7929b03ce0b96a7c79a (diff)
V4L/DVB (7008): s5h1409: Ensure the silicon is initialized during attach
If not it impacts on analog tuner quality. Signed-off-by: Steven Toth <stoth@hauppauge.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media')
-rw-r--r--drivers/media/dvb/frontends/s5h1409.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/media/dvb/frontends/s5h1409.c b/drivers/media/dvb/frontends/s5h1409.c
index d3b148ddad2..3391777e0b2 100644
--- a/drivers/media/dvb/frontends/s5h1409.c
+++ b/drivers/media/dvb/frontends/s5h1409.c
@@ -750,6 +750,7 @@ struct dvb_frontend* s5h1409_attach(const struct s5h1409_config* config,
struct i2c_adapter* i2c)
{
struct s5h1409_state* state = NULL;
+ u16 reg;
/* allocate memory for the internal state */
state = kmalloc(sizeof(struct s5h1409_state), GFP_KERNEL);
@@ -763,7 +764,8 @@ struct dvb_frontend* s5h1409_attach(const struct s5h1409_config* config,
state->if_freq = S5H1409_VSB_IF_FREQ;
/* check if the demod exists */
- if (s5h1409_readreg(state, 0x04) != 0x0066)
+ reg = s5h1409_readreg(state, 0x04);
+ if ((reg != 0x0066) && (reg != 0x007f))
goto error;
/* create dvb_frontend */
@@ -771,8 +773,14 @@ struct dvb_frontend* s5h1409_attach(const struct s5h1409_config* config,
sizeof(struct dvb_frontend_ops));
state->frontend.demodulator_priv = state;
+ if (s5h1409_init(&state->frontend) != 0) {
+ printk(KERN_ERR "%s: Failed to initialize correctly\n",
+ __FUNCTION__);
+ goto error;
+ }
+
/* Note: Leaving the I2C gate open here. */
- s5h1409_writereg(state, 0xf3, 1);
+ s5h1409_i2c_gate_ctrl(&state->frontend, 1);
return &state->frontend;