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path: root/drivers/media/dvb-frontends/tda8261.c
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Diffstat (limited to 'drivers/media/dvb-frontends/tda8261.c')
-rw-r--r--drivers/media/dvb-frontends/tda8261.c125
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;