diff options
| -rw-r--r-- | drivers/media/common/tuners/tda8290.c | 63 |
1 files changed, 53 insertions, 10 deletions
diff --git a/drivers/media/common/tuners/tda8290.c b/drivers/media/common/tuners/tda8290.c index c112bdd4e0f..0ee79fd7c7a 100644 --- a/drivers/media/common/tuners/tda8290.c +++ b/drivers/media/common/tuners/tda8290.c @@ -32,6 +32,9 @@ static int debug; module_param(debug, int, 0644); MODULE_PARM_DESC(debug, "enable verbose debug messages"); +static int deemphasis_50; +MODULE_PARM_DESC(deemphasis_50, "0 - 75us deemphasis; 1 - 50us deemphasis"); + /* ---------------------------------------------------------------------- */ struct tda8290_priv { @@ -139,9 +142,34 @@ static void set_audio(struct dvb_frontend *fe, mode = "xx"; } - tuner_dbg("setting tda829x to system %s\n", mode); + if (params->mode == V4L2_TUNER_RADIO) { + priv->tda8290_easy_mode = 0x01; /* Start with MN values */ + tuner_dbg("setting to radio FM\n"); + } else { + tuner_dbg("setting tda829x to system %s\n", mode); + } } +struct { + unsigned char seq[2]; +} fm_mode[] = { + { { 0x01, 0x81} }, /* Put device into expert mode */ + { { 0x03, 0x48} }, /* Disable NOTCH and VIDEO filters */ + { { 0x04, 0x04} }, /* Disable color carrier filter (SSIF) */ + { { 0x05, 0x04} }, /* ADC headroom */ + { { 0x06, 0x10} }, /* group delay flat */ + + { { 0x07, 0x00} }, /* use the same radio DTO values as a tda8295 */ + { { 0x08, 0x00} }, + { { 0x09, 0x80} }, + { { 0x0a, 0xda} }, + { { 0x0b, 0x4b} }, + { { 0x0c, 0x68} }, + + { { 0x0d, 0x00} }, /* PLL off, no video carrier detect */ + { { 0x14, 0x00} }, /* disable auto mute if no video */ +}; + static void tda8290_set_params(struct dvb_frontend *fe, struct analog_parameters *params) { @@ -178,15 +206,30 @@ static void tda8290_set_params(struct dvb_frontend *fe, tuner_i2c_xfer_send(&priv->i2c_props, soft_reset, 2); msleep(1); - expert_mode[1] = priv->tda8290_easy_mode + 0x80; - tuner_i2c_xfer_send(&priv->i2c_props, expert_mode, 2); - tuner_i2c_xfer_send(&priv->i2c_props, gainset_off, 2); - tuner_i2c_xfer_send(&priv->i2c_props, if_agc_spd, 2); - if (priv->tda8290_easy_mode & 0x60) - tuner_i2c_xfer_send(&priv->i2c_props, adc_head_9, 2); - else - tuner_i2c_xfer_send(&priv->i2c_props, adc_head_6, 2); - tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_nom, 2); + if (params->mode == V4L2_TUNER_RADIO) { + int i; + unsigned char deemphasis[] = { 0x13, 1 }; + + /* FIXME: allow using a different deemphasis */ + + if (deemphasis_50) + deemphasis[1] = 2; + + for (i = 0; i < ARRAY_SIZE(fm_mode); i++) + tuner_i2c_xfer_send(&priv->i2c_props, fm_mode[i].seq, 2); + + tuner_i2c_xfer_send(&priv->i2c_props, deemphasis, 2); + } else { + expert_mode[1] = priv->tda8290_easy_mode + 0x80; + tuner_i2c_xfer_send(&priv->i2c_props, expert_mode, 2); + tuner_i2c_xfer_send(&priv->i2c_props, gainset_off, 2); + tuner_i2c_xfer_send(&priv->i2c_props, if_agc_spd, 2); + if (priv->tda8290_easy_mode & 0x60) + tuner_i2c_xfer_send(&priv->i2c_props, adc_head_9, 2); + else + tuner_i2c_xfer_send(&priv->i2c_props, adc_head_6, 2); + tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_nom, 2); + } tda8290_i2c_bridge(fe, 1); |