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V4L/DVB (6987): tda18271: add support for fm radio 

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Michael Krufky 2008-01-08 10:38:10 -03:00 committed by Mauro Carvalho Chehab
parent a4f263b587
commit c353f42f75
3 changed files with 32 additions and 13 deletions
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42
drivers/media/dvb/frontends/tda18271-fe.c
View File

@ -49,7 +49,8 @@ static int tda18271_ir_cal_init(struct dvb_frontend *fe)
/* ------------------------------------------------------------------ */
static int tda18271_channel_configuration(struct dvb_frontend *fe,
u32 ifc, u32 freq, u32 bw, u8 std)
u32 ifc, u32 freq, u32 bw, u8 std,
int radio)
{
struct tda18271_priv *priv = fe->tuner_priv;
unsigned char *regs = priv->tda18271_regs;
@ -76,7 +77,11 @@ static int tda18271_channel_configuration(struct dvb_frontend *fe,
regs[R_MPD] |= 0x80; /* IF notch = 1 */
break;
}
regs[R_EP4] &= ~0x80; /* FM_RFn: turn this bit on only for fm radio */
if (radio)
regs[R_EP4] |= 0x80;
else
regs[R_EP4] &= ~0x80;
/* update RF_TOP / IF_TOP */
switch (priv->mode) {
@ -615,7 +620,7 @@ static int tda18271_init(struct dvb_frontend *fe)
}
static int tda18271c2_tune(struct dvb_frontend *fe,
u32 ifc, u32 freq, u32 bw, u8 std)
u32 ifc, u32 freq, u32 bw, u8 std, int radio)
{
struct tda18271_priv *priv = fe->tuner_priv;
@ -627,7 +632,7 @@ static int tda18271c2_tune(struct dvb_frontend *fe,
tda18271_rf_tracking_filters_correction(fe, freq);
tda18271_channel_configuration(fe, ifc, freq, bw, std);
tda18271_channel_configuration(fe, ifc, freq, bw, std, radio);
mutex_unlock(&priv->lock);
@ -637,7 +642,7 @@ static int tda18271c2_tune(struct dvb_frontend *fe,
/* ------------------------------------------------------------------ */
static int tda18271c1_tune(struct dvb_frontend *fe,
u32 ifc, u32 freq, u32 bw, u8 std)
u32 ifc, u32 freq, u32 bw, u8 std, int radio)
{
struct tda18271_priv *priv = fe->tuner_priv;
unsigned char *regs = priv->tda18271_regs;
@ -769,7 +774,10 @@ static int tda18271c1_tune(struct dvb_frontend *fe,
break;
}
regs[R_EP4] &= ~0x80; /* turn this bit on only for fm */
if (radio)
regs[R_EP4] |= 0x80;
else
regs[R_EP4] &= ~0x80;
/* image rejection validity */
tda18271_calc_ir_measure(fe, &freq);
@ -787,17 +795,17 @@ static int tda18271c1_tune(struct dvb_frontend *fe,
}
static inline int tda18271_tune(struct dvb_frontend *fe,
u32 ifc, u32 freq, u32 bw, u8 std)
u32 ifc, u32 freq, u32 bw, u8 std, int radio)
{
struct tda18271_priv *priv = fe->tuner_priv;
int ret = -EINVAL;
switch (priv->id) {
case TDA18271HDC1:
ret = tda18271c1_tune(fe, ifc, freq, bw, std);
ret = tda18271c1_tune(fe, ifc, freq, bw, std, radio);
break;
case TDA18271HDC2:
ret = tda18271c2_tune(fe, ifc, freq, bw, std);
ret = tda18271c2_tune(fe, ifc, freq, bw, std, radio);
break;
}
return ret;
@ -865,7 +873,7 @@ static int tda18271_set_params(struct dvb_frontend *fe,
return -EINVAL;
}
ret = tda18271_tune(fe, sgIF * 1000, freq, bw, std);
ret = tda18271_tune(fe, sgIF * 1000, freq, bw, std, 0);
if (ret < 0)
goto fail;
@ -883,14 +891,20 @@ static int tda18271_set_analog_params(struct dvb_frontend *fe,
struct tda18271_priv *priv = fe->tuner_priv;
struct tda18271_std_map *std_map = &priv->std;
char *mode;
int ret;
int ret, radio = 0;
u8 std;
u16 sgIF;
u32 freq = params->frequency * 62500;
priv->mode = TDA18271_ANALOG;
if (params->std & V4L2_STD_MN) {
if (params->mode == V4L2_TUNER_RADIO) {
radio = 1;
freq = freq / 1000;
std = std_map->fm_radio.std_bits;
sgIF = std_map->fm_radio.if_freq;
mode = "fm";
} else if (params->std & V4L2_STD_MN) {
std = std_map->atv_mn.std_bits;
sgIF = std_map->atv_mn.if_freq;
mode = "MN";
@ -926,7 +940,7 @@ static int tda18271_set_analog_params(struct dvb_frontend *fe,
tda_dbg("setting tda18271 to system %s\n", mode);
ret = tda18271_tune(fe, sgIF * 1000, freq, 0, std);
ret = tda18271_tune(fe, sgIF * 1000, freq, 0, std, radio);
if (ret < 0)
goto fail;
@ -994,6 +1008,7 @@ static int tda18271_dump_std_map(struct dvb_frontend *fe)
struct tda18271_std_map *std = &priv->std;
tda_dbg("========== STANDARD MAP SETTINGS ==========\n");
tda18271_dump_std_item(fm_radio, "fm");
tda18271_dump_std_item(atv_b, "pal b");
tda18271_dump_std_item(atv_dk, "pal dk");
tda18271_dump_std_item(atv_gh, "pal gh");
@ -1020,6 +1035,7 @@ static int tda18271_update_std_map(struct dvb_frontend *fe,
if (!map)
return -EINVAL;
tda18271_update_std(fm_radio, "fm");
tda18271_update_std(atv_b, "atv b");
tda18271_update_std(atv_dk, "atv dk");
tda18271_update_std(atv_gh, "atv gh");

2
drivers/media/dvb/frontends/tda18271-tables.c
View File

@ -1187,6 +1187,7 @@ fail:
/*---------------------------------------------------------------------*/
static struct tda18271_std_map tda18271c1_std_map = {
.fm_radio = { .if_freq = 1250, .std_bits = 0x18 },
.atv_b = { .if_freq = 6750, .std_bits = 0x0e },
.atv_dk = { .if_freq = 7750, .std_bits = 0x0f },
.atv_gh = { .if_freq = 7750, .std_bits = 0x0f },
@ -1203,6 +1204,7 @@ static struct tda18271_std_map tda18271c1_std_map = {
};
static struct tda18271_std_map tda18271c2_std_map = {
.fm_radio = { .if_freq = 1250, .std_bits = 0x18 },
.atv_b = { .if_freq = 6000, .std_bits = 0x0d },
.atv_dk = { .if_freq = 6900, .std_bits = 0x0e },
.atv_gh = { .if_freq = 7100, .std_bits = 0x0e },

1
drivers/media/dvb/frontends/tda18271.h
View File

@ -30,6 +30,7 @@ struct tda18271_std_map_item {
};
struct tda18271_std_map {
struct tda18271_std_map_item fm_radio;
struct tda18271_std_map_item atv_b;
struct tda18271_std_map_item atv_dk;
struct tda18271_std_map_item atv_gh;