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V4L/DVB (13838): atbm8830: use AGC setting from config

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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>
This commit is contained in:
David Wong 2009-11-28 08:36:31 -03:00 committed by Mauro Carvalho Chehab
parent 8719cfdb4a
commit c245c75c41
3 changed files with 25 additions and 0 deletions
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3
drivers/media/dvb/dvb-usb/cxusb.c
View File

@ -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)

16
drivers/media/dvb/frontends/atbm8830.c
View File

@ -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);

6
drivers/media/video/cx23885/cx23885-dvb.c
View File

@ -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 = {