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-rw-r--r--drivers/media/dvb/bt8xx/dst.c52
-rw-r--r--drivers/media/dvb/dvb-core/dvb_frontend.c307
-rw-r--r--drivers/media/dvb/dvb-core/dvb_frontend.h11
-rw-r--r--include/linux/dvb/frontend.h10
4 files changed, 228 insertions, 152 deletions
diff --git a/drivers/media/dvb/bt8xx/dst.c b/drivers/media/dvb/bt8xx/dst.c
index 8977c7a313d..3a2ff1cc24b 100644
--- a/drivers/media/dvb/bt8xx/dst.c
+++ b/drivers/media/dvb/bt8xx/dst.c
@@ -1341,30 +1341,40 @@ static int dst_read_snr(struct dvb_frontend *fe, u16 *snr)
return 0;
}
-static int dst_set_frontend(struct dvb_frontend *fe, struct dvb_frontend_parameters *p)
+static int dst_set_frontend(struct dvb_frontend* fe,
+ struct dvb_frontend_parameters* p,
+ unsigned int mode_flags,
+ int *delay,
+ fe_status_t *status)
{
struct dst_state *state = fe->demodulator_priv;
- dst_set_freq(state, p->frequency);
- dprintk(verbose, DST_DEBUG, 1, "Set Frequency=[%d]", p->frequency);
+ if (p != NULL) {
+ dst_set_freq(state, p->frequency);
+ dprintk(verbose, DST_DEBUG, 1, "Set Frequency=[%d]", p->frequency);
- if (state->dst_type == DST_TYPE_IS_SAT) {
- if (state->type_flags & DST_TYPE_HAS_OBS_REGS)
- dst_set_inversion(state, p->inversion);
- dst_set_fec(state, p->u.qpsk.fec_inner);
- dst_set_symbolrate(state, p->u.qpsk.symbol_rate);
- dst_set_polarization(state);
- dprintk(verbose, DST_DEBUG, 1, "Set Symbolrate=[%d]", p->u.qpsk.symbol_rate);
-
- } else if (state->dst_type == DST_TYPE_IS_TERR)
- dst_set_bandwidth(state, p->u.ofdm.bandwidth);
- else if (state->dst_type == DST_TYPE_IS_CABLE) {
- dst_set_fec(state, p->u.qam.fec_inner);
- dst_set_symbolrate(state, p->u.qam.symbol_rate);
- dst_set_modulation(state, p->u.qam.modulation);
+ if (state->dst_type == DST_TYPE_IS_SAT) {
+ if (state->type_flags & DST_TYPE_HAS_OBS_REGS)
+ dst_set_inversion(state, p->inversion);
+ dst_set_fec(state, p->u.qpsk.fec_inner);
+ dst_set_symbolrate(state, p->u.qpsk.symbol_rate);
+ dst_set_polarization(state);
+ dprintk(verbose, DST_DEBUG, 1, "Set Symbolrate=[%d]", p->u.qpsk.symbol_rate);
+
+ } else if (state->dst_type == DST_TYPE_IS_TERR)
+ dst_set_bandwidth(state, p->u.ofdm.bandwidth);
+ else if (state->dst_type == DST_TYPE_IS_CABLE) {
+ dst_set_fec(state, p->u.qam.fec_inner);
+ dst_set_symbolrate(state, p->u.qam.symbol_rate);
+ dst_set_modulation(state, p->u.qam.modulation);
+ }
+ dst_write_tuna(fe);
}
- dst_write_tuna(fe);
+ if (!(mode_flags & FE_TUNE_MODE_ONESHOT))
+ dst_read_status(fe, status);
+
+ *delay = HZ/10;
return 0;
}
@@ -1445,7 +1455,7 @@ static struct dvb_frontend_ops dst_dvbt_ops = {
.release = dst_release,
.init = dst_init,
- .set_frontend = dst_set_frontend,
+ .tune = dst_set_frontend,
.get_frontend = dst_get_frontend,
.read_status = dst_read_status,
.read_signal_strength = dst_read_signal_strength,
@@ -1469,7 +1479,7 @@ static struct dvb_frontend_ops dst_dvbs_ops = {
.release = dst_release,
.init = dst_init,
- .set_frontend = dst_set_frontend,
+ .tune = dst_set_frontend,
.get_frontend = dst_get_frontend,
.read_status = dst_read_status,
.read_signal_strength = dst_read_signal_strength,
@@ -1496,7 +1506,7 @@ static struct dvb_frontend_ops dst_dvbc_ops = {
.release = dst_release,
.init = dst_init,
- .set_frontend = dst_set_frontend,
+ .tune = dst_set_frontend,
.get_frontend = dst_get_frontend,
.read_status = dst_read_status,
.read_signal_strength = dst_read_signal_strength,
diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.c b/drivers/media/dvb/dvb-core/dvb_frontend.c
index 95ea5095e07..9b5fa540e1e 100644
--- a/drivers/media/dvb/dvb-core/dvb_frontend.c
+++ b/drivers/media/dvb/dvb-core/dvb_frontend.c
@@ -92,6 +92,7 @@ static DECLARE_MUTEX(frontend_mutex);
struct dvb_frontend_private {
+ /* thread/frontend values */
struct dvb_device *dvbdev;
struct dvb_frontend_parameters parameters;
struct dvb_fe_events events;
@@ -100,20 +101,25 @@ struct dvb_frontend_private {
wait_queue_head_t wait_queue;
pid_t thread_pid;
unsigned long release_jiffies;
- int state;
- int bending;
- int lnb_drift;
- int inversion;
- int auto_step;
- int auto_sub_step;
- int started_auto_step;
- int min_delay;
- int max_drift;
- int step_size;
- int exit;
- int wakeup;
+ unsigned int exit;
+ unsigned int wakeup;
fe_status_t status;
- fe_sec_tone_mode_t tone;
+ unsigned int tune_mode_flags;
+ unsigned int delay;
+
+ /* swzigzag values */
+ unsigned int state;
+ unsigned int bending;
+ int lnb_drift;
+ unsigned int inversion;
+ unsigned int auto_step;
+ unsigned int auto_sub_step;
+ unsigned int started_auto_step;
+ unsigned int min_delay;
+ unsigned int max_drift;
+ unsigned int step_size;
+ int quality;
+ unsigned int check_wrapped;
};
@@ -208,21 +214,21 @@ static void dvb_frontend_init(struct dvb_frontend *fe)
fe->ops->init(fe);
}
-static void update_delay(int *quality, int *delay, int min_delay, int locked)
+static void dvb_frontend_swzigzag_update_delay(struct dvb_frontend_private *fepriv, int locked)
{
- int q2;
+ int q2;
- dprintk ("%s\n", __FUNCTION__);
+ dprintk ("%s\n", __FUNCTION__);
- if (locked)
- (*quality) = (*quality * 220 + 36*256) / 256;
- else
- (*quality) = (*quality * 220 + 0) / 256;
+ if (locked)
+ (fepriv->quality) = (fepriv->quality * 220 + 36*256) / 256;
+ else
+ (fepriv->quality) = (fepriv->quality * 220 + 0) / 256;
- q2 = *quality - 128;
- q2 *= q2;
+ q2 = fepriv->quality - 128;
+ q2 *= q2;
- *delay = min_delay + q2 * HZ / (128*128);
+ fepriv->delay = fepriv->min_delay + q2 * HZ / (128*128);
}
/**
@@ -232,7 +238,7 @@ static void update_delay(int *quality, int *delay, int min_delay, int locked)
* @param check_wrapped Checks if an iteration has completed. DO NOT SET ON THE FIRST ATTEMPT
* @returns Number of complete iterations that have been performed.
*/
-static int dvb_frontend_autotune(struct dvb_frontend *fe, int check_wrapped)
+static int dvb_frontend_swzigzag_autotune(struct dvb_frontend *fe, int check_wrapped)
{
int autoinversion;
int ready = 0;
@@ -321,6 +327,129 @@ static int dvb_frontend_autotune(struct dvb_frontend *fe, int check_wrapped)
return 0;
}
+static void dvb_frontend_swzigzag(struct dvb_frontend *fe)
+{
+ fe_status_t s;
+ struct dvb_frontend_private *fepriv = fe->frontend_priv;
+
+ /* if we've got no parameters, just keep idling */
+ if (fepriv->state & FESTATE_IDLE) {
+ fepriv->delay = 3*HZ;
+ fepriv->quality = 0;
+ return;
+ }
+
+ /* in SCAN mode, we just set the frontend when asked and leave it alone */
+ if (fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT) {
+ if (fepriv->state & FESTATE_RETUNE) {
+ if (fe->ops->set_frontend)
+ fe->ops->set_frontend(fe, &fepriv->parameters);
+ fepriv->state = FESTATE_TUNED;
+ }
+ fepriv->delay = 3*HZ;
+ fepriv->quality = 0;
+ return;
+ }
+
+ /* get the frontend status */
+ if (fepriv->state & FESTATE_RETUNE) {
+ s = 0;
+ } else {
+ if (fe->ops->read_status)
+ fe->ops->read_status(fe, &s);
+ if (s != fepriv->status) {
+ dvb_frontend_add_event(fe, s);
+ fepriv->status = s;
+ }
+ }
+
+ /* if we're not tuned, and we have a lock, move to the TUNED state */
+ if ((fepriv->state & FESTATE_WAITFORLOCK) && (s & FE_HAS_LOCK)) {
+ dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
+ fepriv->state = FESTATE_TUNED;
+
+ /* if we're tuned, then we have determined the correct inversion */
+ if ((!(fe->ops->info.caps & FE_CAN_INVERSION_AUTO)) &&
+ (fepriv->parameters.inversion == INVERSION_AUTO)) {
+ fepriv->parameters.inversion = fepriv->inversion;
+ }
+ return;
+ }
+
+ /* if we are tuned already, check we're still locked */
+ if (fepriv->state & FESTATE_TUNED) {
+ dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
+
+ /* we're tuned, and the lock is still good... */
+ if (s & FE_HAS_LOCK) {
+ return;
+ } else { /* if we _WERE_ tuned, but now don't have a lock */
+ fepriv->state = FESTATE_ZIGZAG_FAST;
+ fepriv->started_auto_step = fepriv->auto_step;
+ fepriv->check_wrapped = 0;
+ }
+ }
+
+ /* don't actually do anything if we're in the LOSTLOCK state,
+ * the frontend is set to FE_CAN_RECOVER, and the max_drift is 0 */
+ if ((fepriv->state & FESTATE_LOSTLOCK) &&
+ (fe->ops->info.caps & FE_CAN_RECOVER) && (fepriv->max_drift == 0)) {
+ dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
+ return;
+ }
+
+ /* don't do anything if we're in the DISEQC state, since this
+ * might be someone with a motorized dish controlled by DISEQC.
+ * If its actually a re-tune, there will be a SET_FRONTEND soon enough. */
+ if (fepriv->state & FESTATE_DISEQC) {
+ dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
+ return;
+ }
+
+ /* if we're in the RETUNE state, set everything up for a brand
+ * new scan, keeping the current inversion setting, as the next
+ * tune is _very_ likely to require the same */
+ if (fepriv->state & FESTATE_RETUNE) {
+ fepriv->lnb_drift = 0;
+ fepriv->auto_step = 0;
+ fepriv->auto_sub_step = 0;
+ fepriv->started_auto_step = 0;
+ fepriv->check_wrapped = 0;
+ }
+
+ /* fast zigzag. */
+ if ((fepriv->state & FESTATE_SEARCHING_FAST) || (fepriv->state & FESTATE_RETUNE)) {
+ fepriv->delay = fepriv->min_delay;
+
+ /* peform a tune */
+ if (dvb_frontend_swzigzag_autotune(fe, fepriv->check_wrapped)) {
+ /* OK, if we've run out of trials at the fast speed.
+ * Drop back to slow for the _next_ attempt */
+ fepriv->state = FESTATE_SEARCHING_SLOW;
+ fepriv->started_auto_step = fepriv->auto_step;
+ return;
+ }
+ fepriv->check_wrapped = 1;
+
+ /* if we've just retuned, enter the ZIGZAG_FAST state.
+ * This ensures we cannot return from an
+ * FE_SET_FRONTEND ioctl before the first frontend tune
+ * occurs */
+ if (fepriv->state & FESTATE_RETUNE) {
+ fepriv->state = FESTATE_TUNING_FAST;
+ }
+ }
+
+ /* slow zigzag */
+ if (fepriv->state & FESTATE_SEARCHING_SLOW) {
+ dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
+
+ /* Note: don't bother checking for wrapping; we stay in this
+ * state until we get a lock */
+ dvb_frontend_swzigzag_autotune(fe, 0);
+ }
+}
+
static int dvb_frontend_is_exiting(struct dvb_frontend *fe)
{
struct dvb_frontend_private *fepriv = fe->frontend_priv;
@@ -330,7 +459,7 @@ static int dvb_frontend_is_exiting(struct dvb_frontend *fe)
if (fepriv->dvbdev->writers == 1)
if (time_after(jiffies, fepriv->release_jiffies +
- dvb_shutdown_timeout * HZ))
+ dvb_shutdown_timeout * HZ))
return 1;
return 0;
@@ -355,18 +484,14 @@ static void dvb_frontend_wakeup(struct dvb_frontend *fe)
wake_up_interruptible(&fepriv->wait_queue);
}
-/*
- * FIXME: use linux/kthread.h
- */
static int dvb_frontend_thread(void *data)
{
struct dvb_frontend *fe = data;
struct dvb_frontend_private *fepriv = fe->frontend_priv;
unsigned long timeout;
char name [15];
- int quality = 0, delay = 3*HZ;
fe_status_t s;
- int check_wrapped = 0;
+ struct dvb_frontend_parameters *params;
dprintk("%s\n", __FUNCTION__);
@@ -377,6 +502,9 @@ static int dvb_frontend_thread(void *data)
sigfillset(&current->blocked);
unlock_kernel();
+ fepriv->check_wrapped = 0;
+ fepriv->quality = 0;
+ fepriv->delay = 3*HZ;
fepriv->status = 0;
dvb_frontend_init(fe);
fepriv->wakeup = 0;
@@ -386,7 +514,7 @@ static int dvb_frontend_thread(void *data)
timeout = wait_event_interruptible_timeout(fepriv->wait_queue,
dvb_frontend_should_wakeup(fe),
- delay);
+ fepriv->delay);
if (0 != dvb_frontend_is_exiting(fe)) {
/* got signal or quitting */
break;
@@ -397,108 +525,22 @@ static int dvb_frontend_thread(void *data)
if (down_interruptible(&fepriv->sem))
break;
- /* if we've got no parameters, just keep idling */
- if (fepriv->state & FESTATE_IDLE) {
- delay = 3*HZ;
- quality = 0;
- continue;
- }
+ /* do an iteration of the tuning loop */
+ if (fe->ops->tune) {
+ /* have we been asked to retune? */
+ params = NULL;
+ if (fepriv->state & FESTATE_RETUNE) {
+ params = &fepriv->parameters;
+ fepriv->state = FESTATE_TUNED;
+ }
- /* get the frontend status */
- if (fepriv->state & FESTATE_RETUNE) {
- s = 0;
- } else {
- if (fe->ops->read_status)
- fe->ops->read_status(fe, &s);
+ fe->ops->tune(fe, params, fepriv->tune_mode_flags, &fepriv->delay, &s);
if (s != fepriv->status) {
dvb_frontend_add_event(fe, s);
fepriv->status = s;
}
- }
- /* if we're not tuned, and we have a lock, move to the TUNED state */
- if ((fepriv->state & FESTATE_WAITFORLOCK) && (s & FE_HAS_LOCK)) {
- update_delay(&quality, &delay, fepriv->min_delay, s & FE_HAS_LOCK);
- fepriv->state = FESTATE_TUNED;
-
- /* if we're tuned, then we have determined the correct inversion */
- if ((!(fe->ops->info.caps & FE_CAN_INVERSION_AUTO)) &&
- (fepriv->parameters.inversion == INVERSION_AUTO)) {
- fepriv->parameters.inversion = fepriv->inversion;
- }
- continue;
- }
-
- /* if we are tuned already, check we're still locked */
- if (fepriv->state & FESTATE_TUNED) {
- update_delay(&quality, &delay, fepriv->min_delay, s & FE_HAS_LOCK);
-
- /* we're tuned, and the lock is still good... */
- if (s & FE_HAS_LOCK)
- continue;
- else { /* if we _WERE_ tuned, but now don't have a lock */
- fepriv->state = FESTATE_ZIGZAG_FAST;
- fepriv->started_auto_step = fepriv->auto_step;
- check_wrapped = 0;
- }
- }
-
- /* don't actually do anything if we're in the LOSTLOCK state,
- * the frontend is set to FE_CAN_RECOVER, and the max_drift is 0 */
- if ((fepriv->state & FESTATE_LOSTLOCK) &&
- (fe->ops->info.caps & FE_CAN_RECOVER) && (fepriv->max_drift == 0)) {
- update_delay(&quality, &delay, fepriv->min_delay, s & FE_HAS_LOCK);
- continue;
- }
-
- /* don't do anything if we're in the DISEQC state, since this
- * might be someone with a motorized dish controlled by DISEQC.
- * If its actually a re-tune, there will be a SET_FRONTEND soon enough. */
- if (fepriv->state & FESTATE_DISEQC) {
- update_delay(&quality, &delay, fepriv->min_delay, s & FE_HAS_LOCK);
- continue;
- }
-
- /* if we're in the RETUNE state, set everything up for a brand
- * new scan, keeping the current inversion setting, as the next
- * tune is _very_ likely to require the same */
- if (fepriv->state & FESTATE_RETUNE) {
- fepriv->lnb_drift = 0;
- fepriv->auto_step = 0;
- fepriv->auto_sub_step = 0;
- fepriv->started_auto_step = 0;
- check_wrapped = 0;
- }
-
- /* fast zigzag. */
- if ((fepriv->state & FESTATE_SEARCHING_FAST) || (fepriv->state & FESTATE_RETUNE)) {
- delay = fepriv->min_delay;
-
- /* peform a tune */
- if (dvb_frontend_autotune(fe, check_wrapped)) {
- /* OK, if we've run out of trials at the fast speed.
- * Drop back to slow for the _next_ attempt */
- fepriv->state = FESTATE_SEARCHING_SLOW;
- fepriv->started_auto_step = fepriv->auto_step;
- continue;
- }
- check_wrapped = 1;
-
- /* if we've just retuned, enter the ZIGZAG_FAST state.
- * This ensures we cannot return from an
- * FE_SET_FRONTEND ioctl before the first frontend tune
- * occurs */
- if (fepriv->state & FESTATE_RETUNE) {
- fepriv->state = FESTATE_TUNING_FAST;
- }
- }
-
- /* slow zigzag */
- if (fepriv->state & FESTATE_SEARCHING_SLOW) {
- update_delay(&quality, &delay, fepriv->min_delay, s & FE_HAS_LOCK);
-
- /* Note: don't bother checking for wrapping; we stay in this
- * state until we get a lock */
- dvb_frontend_autotune(fe, 0);
+ } else {
+ dvb_frontend_swzigzag(fe);
}
}
@@ -733,7 +775,6 @@ static int dvb_frontend_ioctl(struct inode *inode, struct file *file,
err = fe->ops->set_tone(fe, (fe_sec_tone_mode_t) parg);
fepriv->state = FESTATE_DISEQC;
fepriv->status = 0;
- fepriv->tone = (fe_sec_tone_mode_t) parg;
}
break;
@@ -891,6 +932,10 @@ static int dvb_frontend_ioctl(struct inode *inode, struct file *file,
err = fe->ops->get_frontend(fe, (struct dvb_frontend_parameters*) parg);
}
break;
+
+ case FE_SET_FRONTEND_TUNE_MODE:
+ fepriv->tune_mode_flags = (unsigned int) parg;
+ break;
};
up (&fepriv->sem);
@@ -932,6 +977,9 @@ static int dvb_frontend_open(struct inode *inode, struct file *file)
/* empty event queue */
fepriv->events.eventr = fepriv->events.eventw = 0;
+
+ /* normal tune mode when opened R/W */
+ fepriv->tune_mode_flags &= ~FE_TUNE_MODE_ONESHOT;
}
return ret;
@@ -990,7 +1038,6 @@ int dvb_register_frontend(struct dvb_adapter* dvb,
init_MUTEX (&fepriv->events.sem);
fe->dvb = dvb;
fepriv->inversion = INVERSION_OFF;
- fepriv->tone = SEC_TONE_OFF;
printk ("DVB: registering frontend %i (%s)...\n",
fe->dvb->num,
diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.h b/drivers/media/dvb/dvb-core/dvb_frontend.h
index 1e0840d02f1..48c3f81be91 100644
--- a/drivers/media/dvb/dvb-core/dvb_frontend.h
+++ b/drivers/media/dvb/dvb-core/dvb_frontend.h
@@ -58,10 +58,19 @@ struct dvb_frontend_ops {
int (*init)(struct dvb_frontend* fe);
int (*sleep)(struct dvb_frontend* fe);
+ /* if this is set, it overrides the default swzigzag */
+ int (*tune)(struct dvb_frontend* fe,
+ struct dvb_frontend_parameters* params,
+ unsigned int mode_flags,
+ int *delay,
+ fe_status_t *status);
+
+ /* these two are only used for the swzigzag code */
int (*set_frontend)(struct dvb_frontend* fe, struct dvb_frontend_parameters* params);
- int (*get_frontend)(struct dvb_frontend* fe, struct dvb_frontend_parameters* params);
int (*get_tune_settings)(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* settings);
+ int (*get_frontend)(struct dvb_frontend* fe, struct dvb_frontend_parameters* params);
+
int (*read_status)(struct dvb_frontend* fe, fe_status_t* status);
int (*read_ber)(struct dvb_frontend* fe, u32* ber);
int (*read_signal_strength)(struct dvb_frontend* fe, u16* strength);
diff --git a/include/linux/dvb/frontend.h b/include/linux/dvb/frontend.h
index d41df7047ed..c8cbd90ba37 100644
--- a/include/linux/dvb/frontend.h
+++ b/include/linux/dvb/frontend.h
@@ -240,6 +240,15 @@ struct dvb_frontend_event {
};
+/**
+ * When set, this flag will disable any zigzagging or other "normal" tuning
+ * behaviour. Additionally, there will be no automatic monitoring of the lock
+ * status, and hence no frontend events will be generated. If a frontend device
+ * is closed, this flag will be automatically turned off when the device is
+ * reopened read-write.
+ */
+#define FE_TUNE_MODE_ONESHOT 0x01
+
#define FE_GET_INFO _IOR('o', 61, struct dvb_frontend_info)
@@ -260,6 +269,7 @@ struct dvb_frontend_event {
#define FE_SET_FRONTEND _IOW('o', 76, struct dvb_frontend_parameters)
#define FE_GET_FRONTEND _IOR('o', 77, struct dvb_frontend_parameters)
+#define FE_SET_FRONTEND_TUNE_MODE _IO('o', 81) /* unsigned int */
#define FE_GET_EVENT _IOR('o', 78, struct dvb_frontend_event)
#define FE_DISHNETWORK_SEND_LEGACY_CMD _IO('o', 80) /* unsigned int */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-25 04:08:36 +0000