diff options
Diffstat (limited to 'drivers/media/dvb-frontends/tda8261.c')
| -rw-r--r-- | drivers/media/dvb-frontends/tda8261.c | 125 |
1 files changed, 52 insertions, 73 deletions
diff --git a/drivers/media/dvb-frontends/tda8261.c b/drivers/media/dvb-frontends/tda8261.c index 19c488814..3285b1bc4 100644 --- a/drivers/media/dvb-frontends/tda8261.c +++ b/drivers/media/dvb-frontends/tda8261.c @@ -83,88 +83,71 @@ static int tda8261_get_status(struct dvb_frontend *fe, u32 *status) static const u32 div_tab[] = { 2000, 1000, 500, 250, 125 }; /* kHz */ static const u8 ref_div[] = { 0x00, 0x01, 0x02, 0x05, 0x07 }; -static int tda8261_get_state(struct dvb_frontend *fe, - enum tuner_param param, - struct tuner_state *tstate) +static int tda8261_get_frequency(struct dvb_frontend *fe, u32 *frequency) { struct tda8261_state *state = fe->tuner_priv; - int err = 0; - switch (param) { - case DVBFE_TUNER_FREQUENCY: - tstate->frequency = state->frequency; - break; - case DVBFE_TUNER_BANDWIDTH: - tstate->bandwidth = 40000000; /* FIXME! need to calculate Bandwidth */ - break; - default: - pr_err("%s: Unknown parameter (param=%d)\n", __func__, param); - err = -EINVAL; - break; - } + *frequency = state->frequency; - return err; + return 0; } -static int tda8261_set_state(struct dvb_frontend *fe, - enum tuner_param param, - struct tuner_state *tstate) +static int tda8261_set_params(struct dvb_frontend *fe) { + struct dtv_frontend_properties *c = &fe->dtv_property_cache; struct tda8261_state *state = fe->tuner_priv; const struct tda8261_config *config = state->config; u32 frequency, N, status = 0; u8 buf[4]; int err = 0; - if (param & DVBFE_TUNER_FREQUENCY) { - /** - * N = Max VCO Frequency / Channel Spacing - * Max VCO Frequency = VCO frequency + (channel spacing - 1) - * (to account for half channel spacing on either side) - */ - frequency = tstate->frequency; - if ((frequency < 950000) || (frequency > 2150000)) { - pr_warn("%s: Frequency beyond limits, frequency=%d\n", __func__, frequency); - return -EINVAL; - } - N = (frequency + (div_tab[config->step_size] - 1)) / div_tab[config->step_size]; - pr_debug("%s: Step size=%d, Divider=%d, PG=0x%02x (%d)\n", - __func__, config->step_size, div_tab[config->step_size], N, N); - - buf[0] = (N >> 8) & 0xff; - buf[1] = N & 0xff; - buf[2] = (0x01 << 7) | ((ref_div[config->step_size] & 0x07) << 1); - - if (frequency < 1450000) - buf[3] = 0x00; - else if (frequency < 2000000) - buf[3] = 0x40; - else if (frequency < 2150000) - buf[3] = 0x80; - - /* Set params */ - if ((err = tda8261_write(state, buf)) < 0) { - pr_err("%s: I/O Error\n", __func__); - return err; - } - /* sleep for some time */ - pr_debug("%s: Waiting to Phase LOCK\n", __func__); - msleep(20); - /* check status */ - if ((err = tda8261_get_status(fe, &status)) < 0) { - pr_err("%s: I/O Error\n", __func__); - return err; - } - if (status == 1) { - pr_debug("%s: Tuner Phase locked: status=%d\n", __func__, status); - state->frequency = frequency; /* cache successful state */ - } else { - pr_debug("%s: No Phase lock: status=%d\n", __func__, status); - } - } else { - pr_err("%s: Unknown parameter (param=%d)\n", __func__, param); + /* + * N = Max VCO Frequency / Channel Spacing + * Max VCO Frequency = VCO frequency + (channel spacing - 1) + * (to account for half channel spacing on either side) + */ + frequency = c->frequency; + if ((frequency < 950000) || (frequency > 2150000)) { + pr_warn("%s: Frequency beyond limits, frequency=%d\n", + __func__, frequency); return -EINVAL; } + N = (frequency + (div_tab[config->step_size] - 1)) / div_tab[config->step_size]; + pr_debug("%s: Step size=%d, Divider=%d, PG=0x%02x (%d)\n", + __func__, config->step_size, div_tab[config->step_size], N, N); + + buf[0] = (N >> 8) & 0xff; + buf[1] = N & 0xff; + buf[2] = (0x01 << 7) | ((ref_div[config->step_size] & 0x07) << 1); + + if (frequency < 1450000) + buf[3] = 0x00; + else if (frequency < 2000000) + buf[3] = 0x40; + else if (frequency < 2150000) + buf[3] = 0x80; + + /* Set params */ + err = tda8261_write(state, buf); + if (err < 0) { + pr_err("%s: I/O Error\n", __func__); + return err; + } + /* sleep for some time */ + pr_debug("%s: Waiting to Phase LOCK\n", __func__); + msleep(20); + /* check status */ + if ((err = tda8261_get_status(fe, &status)) < 0) { + pr_err("%s: I/O Error\n", __func__); + return err; + } + if (status == 1) { + pr_debug("%s: Tuner Phase locked: status=%d\n", __func__, + status); + state->frequency = frequency; /* cache successful state */ + } else { + pr_debug("%s: No Phase lock: status=%d\n", __func__, status); + } return 0; } @@ -182,14 +165,13 @@ static struct dvb_tuner_ops tda8261_ops = { .info = { .name = "TDA8261", -// .tuner_name = NULL, .frequency_min = 950000, .frequency_max = 2150000, .frequency_step = 0 }, - .set_state = tda8261_set_state, - .get_state = tda8261_get_state, + .set_params = tda8261_set_params, + .get_frequency = tda8261_get_frequency, .get_status = tda8261_get_status, .release = tda8261_release }; @@ -210,10 +192,7 @@ struct dvb_frontend *tda8261_attach(struct dvb_frontend *fe, fe->ops.tuner_ops = tda8261_ops; fe->ops.tuner_ops.info.frequency_step = div_tab[config->step_size]; -// fe->ops.tuner_ops.tuner_name = &config->buf; -// printk("%s: Attaching %s TDA8261 8PSK/QPSK tuner\n", -// __func__, fe->ops.tuner_ops.tuner_name); pr_info("%s: Attaching TDA8261 8PSK/QPSK tuner\n", __func__); return fe; |