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| author | David Wong <davidtlwong@gmail.com> | 2009-11-28 08:36:31 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2010-02-26 15:10:25 -0300 |
| commit | c245c75c41b9693bcbd6c95e25af324188b4dce1 (patch) | |
| tree | 4bd070c650c0b87e3ed90ee23ee7befe625635eb | |
| parent | 8719cfdb4aa5bc7402bef873f607ed406960019f (diff) | |
| download | kernel_samsung_smdk4412-c245c75c41b9693bcbd6c95e25af324188b4dce1.zip kernel_samsung_smdk4412-c245c75c41b9693bcbd6c95e25af324188b4dce1.tar.gz kernel_samsung_smdk4412-c245c75c41b9693bcbd6c95e25af324188b4dce1.tar.bz2 | |
V4L/DVB (13838): atbm8830: use AGC setting from config
Improves ATBM8830 reception by using per card AGC configuration rather
than register default.
Signed-off-by: David T. L. Wong <davidtlwong@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
| -rw-r--r-- | drivers/media/dvb/dvb-usb/cxusb.c | 3 | ||||
| -rw-r--r-- | drivers/media/dvb/frontends/atbm8830.c | 16 | ||||
| -rw-r--r-- | drivers/media/video/cx23885/cx23885-dvb.c | 6 |
3 files changed, 25 insertions, 0 deletions
diff --git a/drivers/media/dvb/dvb-usb/cxusb.c b/drivers/media/dvb/dvb-usb/cxusb.c index 05fb28e9..a7b8405 100644 --- a/drivers/media/dvb/dvb-usb/cxusb.c +++ b/drivers/media/dvb/dvb-usb/cxusb.c @@ -1184,6 +1184,9 @@ static struct atbm8830_config mygica_d689_atbm8830_cfg = { .osc_clk_freq = 30400, /* in kHz */ .if_freq = 0, /* zero IF */ .zif_swap_iq = 1, + .agc_min = 0x2E, + .agc_max = 0x90, + .agc_hold_loop = 0, }; static int cxusb_mygica_d689_frontend_attach(struct dvb_usb_adapter *adap) diff --git a/drivers/media/dvb/frontends/atbm8830.c b/drivers/media/dvb/frontends/atbm8830.c index 59881a5..43aac2f 100644 --- a/drivers/media/dvb/frontends/atbm8830.c +++ b/drivers/media/dvb/frontends/atbm8830.c @@ -170,6 +170,19 @@ static int is_locked(struct atbm_state *priv, u8 *locked) return 0; } +static int set_agc_config(struct atbm_state *priv, + u8 min, u8 max, u8 hold_loop) +{ + /* no effect if both min and max are zero */ + if (!min && !max) + return 0; + + atbm8830_write_reg(priv, REG_AGC_MIN, min); + atbm8830_write_reg(priv, REG_AGC_MAX, max); + atbm8830_write_reg(priv, REG_AGC_HOLD_LOOP, hold_loop); + + return 0; +} static int set_static_channel_mode(struct atbm_state *priv) { @@ -227,6 +240,9 @@ static int atbm8830_init(struct dvb_frontend *fe) /*Set IF frequency*/ set_if_freq(priv, cfg->if_freq); + /*Set AGC Config*/ + set_agc_config(priv, cfg->agc_min, cfg->agc_max, + cfg->agc_hold_loop); /*Set static channel mode*/ set_static_channel_mode(priv); diff --git a/drivers/media/video/cx23885/cx23885-dvb.c b/drivers/media/video/cx23885/cx23885-dvb.c index e45d2df..ed99e93 100644 --- a/drivers/media/video/cx23885/cx23885-dvb.c +++ b/drivers/media/video/cx23885/cx23885-dvb.c @@ -542,6 +542,9 @@ static struct atbm8830_config mygica_x8558pro_atbm8830_cfg1 = { .osc_clk_freq = 30400, /* in kHz */ .if_freq = 0, /* zero IF */ .zif_swap_iq = 1, + .agc_min = 0x2E, + .agc_max = 0xFF, + .agc_hold_loop = 0, }; static struct max2165_config mygic_x8558pro_max2165_cfg1 = { @@ -558,6 +561,9 @@ static struct atbm8830_config mygica_x8558pro_atbm8830_cfg2 = { .osc_clk_freq = 30400, /* in kHz */ .if_freq = 0, /* zero IF */ .zif_swap_iq = 1, + .agc_min = 0x2E, + .agc_max = 0xFF, + .agc_hold_loop = 0, }; static struct max2165_config mygic_x8558pro_max2165_cfg2 = { |