/*
- * dvb-core.c: DVB core driver
+ * dvb_frontend.c: DVB frontend tuning interface/thread
+ *
*
* Copyright (C) 1999-2001 Ralph Metzler
- * Marcus Metzler
- * Holger Waechtler
- * for convergence integrated media GmbH
+ * Marcus Metzler
+ * Holger Waechtler
+ * for convergence integrated media GmbH
*
* Copyright (C) 2004 Andrew de Quincey (tuning thread cleanup)
*
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
#include <linux/slab.h>
#include <linux/poll.h>
#include <linux/module.h>
+#include <linux/moduleparam.h>
#include <linux/list.h>
+#include <linux/freezer.h>
+#include <linux/jiffies.h>
#include <asm/processor.h>
-#include <asm/semaphore.h>
#include "dvb_frontend.h"
#include "dvbdev.h"
-#include "dvb_functions.h"
+
+static int dvb_frontend_debug;
+static int dvb_shutdown_timeout = 5;
+static int dvb_force_auto_inversion;
+static int dvb_override_tune_delay;
+static int dvb_powerdown_on_sleep = 1;
+
+module_param_named(frontend_debug, dvb_frontend_debug, int, 0644);
+MODULE_PARM_DESC(frontend_debug, "Turn on/off frontend core debugging (default:off).");
+module_param(dvb_shutdown_timeout, int, 0644);
+MODULE_PARM_DESC(dvb_shutdown_timeout, "wait <shutdown_timeout> seconds after close() before suspending hardware");
+module_param(dvb_force_auto_inversion, int, 0644);
+MODULE_PARM_DESC(dvb_force_auto_inversion, "0: normal (default), 1: INVERSION_AUTO forced always");
+module_param(dvb_override_tune_delay, int, 0644);
+MODULE_PARM_DESC(dvb_override_tune_delay, "0: normal (default), >0 => delay in milliseconds to wait for lock after a tune attempt");
+module_param(dvb_powerdown_on_sleep, int, 0644);
+MODULE_PARM_DESC(dvb_powerdown_on_sleep, "0: do not power down, 1: turn LNB voltage off on sleep (default)");
+
+#define dprintk if (dvb_frontend_debug) printk
#define FESTATE_IDLE 1
#define FESTATE_RETUNE 2
#define FESTATE_SEARCHING_FAST (FESTATE_TUNING_FAST | FESTATE_ZIGZAG_FAST)
#define FESTATE_SEARCHING_SLOW (FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_SLOW)
#define FESTATE_LOSTLOCK (FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW)
+
+#define FE_ALGO_HW 1
/*
* FESTATE_IDLE. No tuning parameters have been supplied and the loop is idling.
* FESTATE_RETUNE. Parameters have been supplied, but we have not yet performed the first tune.
* FESTATE_LOSTLOCK. When the lock has been lost, and we're searching it again.
*/
+static DEFINE_MUTEX(frontend_mutex);
-static int dvb_frontend_debug = 0;
-static int dvb_shutdown_timeout = 5;
-static int dvb_override_frequency_bending = 0;
-static int dvb_force_auto_inversion = 0;
-static int dvb_override_tune_delay = 0;
-
-static int do_frequency_bending = 0;
-
-#define dprintk if (dvb_frontend_debug) printk
-
-#define MAX_EVENT 8
-
-struct dvb_fe_events {
- struct dvb_frontend_event events[MAX_EVENT];
- int eventw;
- int eventr;
- int overflow;
- wait_queue_head_t wait_queue;
- struct semaphore sem;
-};
-
+struct dvb_frontend_private {
-struct dvb_frontend_data {
- struct dvb_frontend_info *info;
- struct dvb_frontend frontend;
+ /* thread/frontend values */
struct dvb_device *dvbdev;
struct dvb_frontend_parameters parameters;
struct dvb_fe_events events;
wait_queue_head_t wait_queue;
pid_t thread_pid;
unsigned long release_jiffies;
- int state;
- int bending;
+ unsigned int exit;
+ unsigned int wakeup;
+ fe_status_t status;
+ unsigned long tune_mode_flags;
+ unsigned int delay;
+ unsigned int reinitialise;
+ int tone;
+ int voltage;
+
+ /* swzigzag values */
+ unsigned int state;
+ unsigned 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;
- fe_status_t status;
-};
-
-
-struct dvb_frontend_ioctl_data {
- struct list_head list_head;
- struct dvb_adapter *adapter;
- int (*before_ioctl) (struct dvb_frontend *frontend,
- unsigned int cmd, void *arg);
- int (*after_ioctl) (struct dvb_frontend *frontend,
- unsigned int cmd, void *arg);
- void *before_after_data;
-};
-
-
-struct dvb_frontend_notifier_data {
- struct list_head list_head;
- struct dvb_adapter *adapter;
- void (*callback) (fe_status_t s, void *data);
- void *data;
+ 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;
};
+static void dvb_frontend_wakeup(struct dvb_frontend *fe);
-static LIST_HEAD(frontend_list);
-static LIST_HEAD(frontend_ioctl_list);
-static LIST_HEAD(frontend_notifier_list);
-
-static DECLARE_MUTEX(frontend_mutex);
-
-
-static int dvb_frontend_internal_ioctl (struct dvb_frontend *frontend,
- unsigned int cmd, void *arg)
-{
- int err = -EOPNOTSUPP;
-
- dprintk ("%s\n", __FUNCTION__);
-
- if (frontend->before_ioctl)
- err = frontend->before_ioctl (frontend, cmd, arg);
-
- if (err == -EOPNOTSUPP) {
- err = frontend->ioctl (frontend, cmd, arg);
-
- if ((err == -EOPNOTSUPP) && frontend->after_ioctl)
- err = frontend->after_ioctl (frontend, cmd, arg);
- }
-
- return err;
-}
-
-
-/**
- * if 2 tuners are located side by side you can get interferences when
- * they try to tune to the same frequency, so both lose sync.
- * We will slightly mistune in this case. The AFC of the demodulator
- * should make it still possible to receive the requested transponder
- * on both tuners...
- */
-static void dvb_bend_frequency (struct dvb_frontend_data *this_fe, int recursive)
+static void dvb_frontend_add_event(struct dvb_frontend *fe, fe_status_t status)
{
- struct list_head *entry;
- int stepsize = this_fe->info->frequency_stepsize;
- int this_fe_adap_num = this_fe->frontend.i2c->adapter->num;
- int frequency;
-
- if (!stepsize || recursive > 10) {
- printk ("%s: too deep recursion, check frequency_stepsize "
- "in your frontend code!\n", __FUNCTION__);
- return;
- }
-
- dprintk ("%s\n", __FUNCTION__);
-
- if (!recursive) {
- if (down_interruptible (&frontend_mutex))
- return;
-
- this_fe->bending = 0;
- }
-
- list_for_each (entry, &frontend_list) {
- struct dvb_frontend_data *fe;
- int f;
-
- fe = list_entry (entry, struct dvb_frontend_data, list_head);
-
- if (fe->frontend.i2c->adapter->num != this_fe_adap_num)
- continue;
-
- f = fe->parameters.frequency;
- f += fe->lnb_drift;
- f += fe->bending;
-
- frequency = this_fe->parameters.frequency;
- frequency += this_fe->lnb_drift;
- frequency += this_fe->bending;
-
- if (this_fe != fe && (fe->state != FESTATE_IDLE) &&
- frequency > f - stepsize && frequency < f + stepsize)
- {
- if (recursive % 2)
- this_fe->bending += stepsize;
- else
- this_fe->bending = -this_fe->bending;
-
- dvb_bend_frequency (this_fe, recursive + 1);
- goto done;
- }
- }
-done:
- if (!recursive)
- up (&frontend_mutex);
-}
-
-
-static void dvb_call_frontend_notifiers (struct dvb_frontend_data *fe,
- fe_status_t s)
-{
- dprintk ("%s\n", __FUNCTION__);
-
- if (((s ^ fe->status) & FE_HAS_LOCK) && (s & FE_HAS_LOCK))
- dvb_delay (fe->info->notifier_delay);
-
- fe->status = s;
-
- if (!(s & FE_HAS_LOCK) && (fe->info->caps & FE_CAN_MUTE_TS))
- return;
-
- /**
- * now tell the Demux about the TS status changes...
- */
- if (fe->frontend.notifier_callback)
- fe->frontend.notifier_callback(fe->status, fe->frontend.notifier_data);
-}
-
-
-static void dvb_frontend_add_event (struct dvb_frontend_data *fe, fe_status_t status)
-{
- struct dvb_fe_events *events = &fe->events;
+ struct dvb_frontend_private *fepriv = fe->frontend_priv;
+ struct dvb_fe_events *events = &fepriv->events;
struct dvb_frontend_event *e;
int wp;
e = &events->events[events->eventw];
- memcpy (&e->parameters, &fe->parameters,
+ memcpy (&e->parameters, &fepriv->parameters,
sizeof (struct dvb_frontend_parameters));
if (status & FE_HAS_LOCK)
- dvb_frontend_internal_ioctl (&fe->frontend,
- FE_GET_FRONTEND,
- &e->parameters);
+ if (fe->ops.get_frontend)
+ fe->ops.get_frontend(fe, &e->parameters);
+
events->eventw = wp;
up (&events->sem);
e->status = status;
- dvb_call_frontend_notifiers (fe, status);
wake_up_interruptible (&events->wait_queue);
}
-
-static int dvb_frontend_get_event (struct dvb_frontend_data *fe,
+static int dvb_frontend_get_event(struct dvb_frontend *fe,
struct dvb_frontend_event *event, int flags)
{
- struct dvb_fe_events *events = &fe->events;
+ struct dvb_frontend_private *fepriv = fe->frontend_priv;
+ struct dvb_fe_events *events = &fepriv->events;
dprintk ("%s\n", __FUNCTION__);
if (events->overflow) {
- events->overflow = 0;
- return -EOVERFLOW;
- }
+ events->overflow = 0;
+ return -EOVERFLOW;
+ }
- if (events->eventw == events->eventr) {
+ if (events->eventw == events->eventr) {
int ret;
- if (flags & O_NONBLOCK)
- return -EWOULDBLOCK;
+ if (flags & O_NONBLOCK)
+ return -EWOULDBLOCK;
- up(&fe->sem);
+ up(&fepriv->sem);
- ret = wait_event_interruptible (events->wait_queue,
- events->eventw != events->eventr);
+ ret = wait_event_interruptible (events->wait_queue,
+ events->eventw != events->eventr);
- if (down_interruptible (&fe->sem))
+ if (down_interruptible (&fepriv->sem))
return -ERESTARTSYS;
- if (ret < 0)
- return ret;
- }
+ if (ret < 0)
+ return ret;
+ }
- if (down_interruptible (&events->sem))
+ if (down_interruptible (&events->sem))
return -ERESTARTSYS;
- memcpy (event, &events->events[events->eventr],
+ memcpy (event, &events->events[events->eventr],
sizeof(struct dvb_frontend_event));
- events->eventr = (events->eventr + 1) % MAX_EVENT;
+ events->eventr = (events->eventr + 1) % MAX_EVENT;
- up (&events->sem);
+ up (&events->sem);
- return 0;
+ return 0;
}
-static void dvb_frontend_init (struct dvb_frontend_data *fe)
+static void dvb_frontend_init(struct dvb_frontend *fe)
{
- struct dvb_frontend *frontend = &fe->frontend;
+ dprintk ("DVB: initialising frontend %i (%s)...\n",
+ fe->dvb->num,
+ fe->ops.info.name);
+
+ if (fe->ops.init)
+ fe->ops.init(fe);
+ if (fe->ops.tuner_ops.init) {
+ fe->ops.tuner_ops.init(fe);
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 0);
+ }
+}
- dprintk ("DVB: initialising frontend %i:%i (%s)...\n",
- frontend->i2c->adapter->num, frontend->i2c->id,
- fe->info->name);
+void dvb_frontend_reinitialise(struct dvb_frontend *fe)
+{
+ struct dvb_frontend_private *fepriv = fe->frontend_priv;
- dvb_frontend_internal_ioctl (frontend, FE_INIT, NULL);
+ fepriv->reinitialise = 1;
+ dvb_frontend_wakeup(fe);
}
+EXPORT_SYMBOL(dvb_frontend_reinitialise);
-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;
dprintk ("%s\n", __FUNCTION__);
if (locked)
- (*quality) = (*quality * 220 + 36*256) / 256;
+ (fepriv->quality) = (fepriv->quality * 220 + 36*256) / 256;
else
- (*quality) = (*quality * 220 + 0) / 256;
+ (fepriv->quality) = (fepriv->quality * 220 + 0) / 256;
- q2 = *quality - 128;
+ q2 = fepriv->quality - 128;
q2 *= q2;
- *delay = min_delay + q2 * HZ / (128*128);
+ fepriv->delay = fepriv->min_delay + q2 * HZ / (128*128);
}
/**
* Performs automatic twiddling of frontend parameters.
- *
+ *
* @param fe The frontend concerned.
* @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_data *fe, int check_wrapped)
+static int dvb_frontend_swzigzag_autotune(struct dvb_frontend *fe, int check_wrapped)
{
int autoinversion;
int ready = 0;
- int original_inversion = fe->parameters.inversion;
- u32 original_frequency = fe->parameters.frequency;
+ struct dvb_frontend_private *fepriv = fe->frontend_priv;
+ int original_inversion = fepriv->parameters.inversion;
+ u32 original_frequency = fepriv->parameters.frequency;
- // are we using autoinversion?
- autoinversion = ((!(fe->info->caps & FE_CAN_INVERSION_AUTO)) && (fe->parameters.inversion == INVERSION_AUTO));
+ /* are we using autoinversion? */
+ autoinversion = ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) &&
+ (fepriv->parameters.inversion == INVERSION_AUTO));
- // setup parameters correctly
+ /* setup parameters correctly */
while(!ready) {
- // calculate the lnb_drift
- fe->lnb_drift = fe->auto_step * fe->step_size;
-
- // wrap the auto_step if we've exceeded the maximum drift
- if (fe->lnb_drift > fe->max_drift) {
- fe->auto_step = 0;
- fe->auto_sub_step = 0;
- fe->lnb_drift = 0;
+ /* calculate the lnb_drift */
+ fepriv->lnb_drift = fepriv->auto_step * fepriv->step_size;
+
+ /* wrap the auto_step if we've exceeded the maximum drift */
+ if (fepriv->lnb_drift > fepriv->max_drift) {
+ fepriv->auto_step = 0;
+ fepriv->auto_sub_step = 0;
+ fepriv->lnb_drift = 0;
}
- // perform inversion and +/- zigzag
- switch(fe->auto_sub_step) {
+ /* perform inversion and +/- zigzag */
+ switch(fepriv->auto_sub_step) {
case 0:
- // try with the current inversion and current drift setting
+ /* try with the current inversion and current drift setting */
ready = 1;
break;
case 1:
if (!autoinversion) break;
- fe->inversion = (fe->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF;
+ fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF;
ready = 1;
break;
case 2:
- if (fe->lnb_drift == 0) break;
-
- fe->lnb_drift = -fe->lnb_drift;
+ if (fepriv->lnb_drift == 0) break;
+
+ fepriv->lnb_drift = -fepriv->lnb_drift;
ready = 1;
break;
-
+
case 3:
- if (fe->lnb_drift == 0) break;
+ if (fepriv->lnb_drift == 0) break;
if (!autoinversion) break;
-
- fe->inversion = (fe->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF;
- fe->lnb_drift = -fe->lnb_drift;
+
+ fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF;
+ fepriv->lnb_drift = -fepriv->lnb_drift;
ready = 1;
break;
-
+
default:
- fe->auto_step++;
- fe->auto_sub_step = -1; // it'll be incremented to 0 in a moment
+ fepriv->auto_step++;
+ fepriv->auto_sub_step = -1; /* it'll be incremented to 0 in a moment */
break;
}
-
- if (!ready) fe->auto_sub_step++;
+
+ if (!ready) fepriv->auto_sub_step++;
}
- // if this attempt would hit where we started, indicate a complete iteration has occurred
- if ((fe->auto_step == fe->started_auto_step) && (fe->auto_sub_step == 0) && check_wrapped) {
+ /* if this attempt would hit where we started, indicate a complete
+ * iteration has occurred */
+ if ((fepriv->auto_step == fepriv->started_auto_step) &&
+ (fepriv->auto_sub_step == 0) && check_wrapped) {
return 1;
- }
+ }
+
+ dprintk("%s: drift:%i inversion:%i auto_step:%i "
+ "auto_sub_step:%i started_auto_step:%i\n",
+ __FUNCTION__, fepriv->lnb_drift, fepriv->inversion,
+ fepriv->auto_step, fepriv->auto_sub_step, fepriv->started_auto_step);
- // perform frequency bending if necessary
- if ((dvb_override_frequency_bending != 1) && do_frequency_bending)
- dvb_bend_frequency(fe, 0);
-
- // instrumentation
- dprintk("%s: drift:%i bending:%i inversion:%i auto_step:%i auto_sub_step:%i started_auto_step:%i\n",
- __FUNCTION__, fe->lnb_drift, fe->bending, fe->inversion, fe->auto_step, fe->auto_sub_step,
- fe->started_auto_step);
-
- // set the frontend itself
- fe->parameters.frequency += fe->lnb_drift + fe->bending;
- if (autoinversion) fe->parameters.inversion = fe->inversion;
- dvb_frontend_internal_ioctl (&fe->frontend, FE_SET_FRONTEND, &fe->parameters);
- fe->parameters.frequency = original_frequency;
- fe->parameters.inversion = original_inversion;
-
- // normal return
- fe->auto_sub_step++;
+ /* set the frontend itself */
+ fepriv->parameters.frequency += fepriv->lnb_drift;
+ if (autoinversion)
+ fepriv->parameters.inversion = fepriv->inversion;
+ if (fe->ops.set_frontend)
+ fe->ops.set_frontend(fe, &fepriv->parameters);
+
+ fepriv->parameters.frequency = original_frequency;
+ fepriv->parameters.inversion = original_inversion;
+
+ fepriv->auto_sub_step++;
return 0;
}
+static void dvb_frontend_swzigzag(struct dvb_frontend *fe)
+{
+ fe_status_t s = 0;
+ 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_data *fe)
+static int dvb_frontend_is_exiting(struct dvb_frontend *fe)
{
- if (fe->exit)
+ struct dvb_frontend_private *fepriv = fe->frontend_priv;
+
+ if (fepriv->exit)
return 1;
- if (fe->dvbdev->writers == 1)
- if (jiffies - fe->release_jiffies > dvb_shutdown_timeout * HZ)
+ if (fepriv->dvbdev->writers == 1)
+ if (time_after(jiffies, fepriv->release_jiffies +
+ dvb_shutdown_timeout * HZ))
return 1;
return 0;
}
-static int dvb_frontend_should_wakeup (struct dvb_frontend_data *fe)
+static int dvb_frontend_should_wakeup(struct dvb_frontend *fe)
{
- if (fe->wakeup) {
- fe->wakeup = 0;
+ struct dvb_frontend_private *fepriv = fe->frontend_priv;
+
+ if (fepriv->wakeup) {
+ fepriv->wakeup = 0;
return 1;
}
return dvb_frontend_is_exiting(fe);
}
-static void dvb_frontend_wakeup (struct dvb_frontend_data *fe) {
- fe->wakeup = 1;
- wake_up_interruptible(&fe->wait_queue);
+static void dvb_frontend_wakeup(struct dvb_frontend *fe)
+{
+ struct dvb_frontend_private *fepriv = fe->frontend_priv;
+
+ fepriv->wakeup = 1;
+ wake_up_interruptible(&fepriv->wait_queue);
}
-static int dvb_frontend_thread (void *data)
+static int dvb_frontend_thread(void *data)
{
- struct dvb_frontend_data *fe = (struct dvb_frontend_data *) 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__);
+ dprintk("%s\n", __FUNCTION__);
+
+ snprintf (name, sizeof(name), "kdvb-fe-%i", fe->dvb->num);
- snprintf (name, sizeof(name), "kdvb-fe-%i:%i",
- fe->frontend.i2c->adapter->num, fe->frontend.i2c->id);
+ lock_kernel();
+ daemonize(name);
+ sigfillset(¤t->blocked);
+ unlock_kernel();
- dvb_kernel_thread_setup (name);
+ fepriv->check_wrapped = 0;
+ fepriv->quality = 0;
+ fepriv->delay = 3*HZ;
+ fepriv->status = 0;
+ fepriv->wakeup = 0;
+ fepriv->reinitialise = 0;
- dvb_call_frontend_notifiers (fe, 0);
- dvb_frontend_init (fe);
- fe->wakeup = 0;
+ dvb_frontend_init(fe);
while (1) {
- up (&fe->sem); /* is locked when we enter the thread... */
+ up(&fepriv->sem); /* is locked when we enter the thread... */
- timeout = wait_event_interruptible_timeout(fe->wait_queue,0 != dvb_frontend_should_wakeup (fe), delay);
- if (-ERESTARTSYS == timeout || 0 != dvb_frontend_is_exiting (fe)) {
+ timeout = wait_event_interruptible_timeout(fepriv->wait_queue,
+ dvb_frontend_should_wakeup(fe),
+ fepriv->delay);
+ if (0 != dvb_frontend_is_exiting(fe)) {
/* got signal or quitting */
break;
}
- if (down_interruptible (&fe->sem))
- break;
+ try_to_freeze();
- // if we've got no parameters, just keep idling
- if (fe->state & FESTATE_IDLE) {
- delay = 3*HZ;
- quality = 0;
- continue;
- }
-
- // get the frontend status
- dvb_frontend_internal_ioctl (&fe->frontend, FE_READ_STATUS, &s);
- if (s != fe->status)
- dvb_frontend_add_event (fe, s);
-
- // if we're not tuned, and we have a lock, move to the TUNED state
- if ((fe->state & FESTATE_WAITFORLOCK) && (s & FE_HAS_LOCK)) {
- update_delay(&quality, &delay, fe->min_delay, s & FE_HAS_LOCK);
- fe->state = FESTATE_TUNED;
+ if (down_interruptible(&fepriv->sem))
+ break;
- // if we're tuned, then we have determined the correct inversion
- if ((!(fe->info->caps & FE_CAN_INVERSION_AUTO)) && (fe->parameters.inversion == INVERSION_AUTO)) {
- fe->parameters.inversion = fe->inversion;
+ if (fepriv->reinitialise) {
+ dvb_frontend_init(fe);
+ if (fepriv->tone != -1) {
+ fe->ops.set_tone(fe, fepriv->tone);
}
- continue;
- }
-
- // if we are tuned already, check we're still locked
- if (fe->state & FESTATE_TUNED) {
- update_delay(&quality, &delay, fe->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, need to zigzag
- fe->state = FESTATE_ZIGZAG_FAST;
- fe->started_auto_step = fe->auto_step;
- check_wrapped = 0;
- // fallthrough
+ if (fepriv->voltage != -1) {
+ fe->ops.set_voltage(fe, fepriv->voltage);
}
+ fepriv->reinitialise = 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 ((fe->state & FESTATE_LOSTLOCK) &&
- (fe->info->caps & FE_CAN_RECOVER) && (fe->max_drift == 0)) {
- update_delay(&quality, &delay, fe->min_delay, s & FE_HAS_LOCK);
- continue;
+ /* do an iteration of the tuning loop */
+ if (fe->ops.get_frontend_algo) {
+ if (fe->ops.get_frontend_algo(fe) == FE_ALGO_HW) {
+ /* have we been asked to retune? */
+ params = NULL;
+ if (fepriv->state & FESTATE_RETUNE) {
+ params = &fepriv->parameters;
+ fepriv->state = FESTATE_TUNED;
}
-
- // 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 (fe->state & FESTATE_DISEQC) {
- update_delay(&quality, &delay, fe->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 (fe->state & FESTATE_RETUNE) {
- fe->lnb_drift = 0;
- fe->auto_step = 0;
- fe->auto_sub_step = 0;
- fe->started_auto_step = 0;
- check_wrapped = 0;
- }
- // fast zigzag.
- if ((fe->state & FESTATE_SEARCHING_FAST) || (fe->state & FESTATE_RETUNE)) {
- delay = fe->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
- fe->state = FESTATE_SEARCHING_SLOW;
- fe->started_auto_step = fe->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 (fe->state & FESTATE_RETUNE) {
- fe->state = FESTATE_TUNING_FAST;
- wake_up_interruptible(&fe->wait_queue);
- }
- }
+ 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;
+ }
+ } else
+ dvb_frontend_swzigzag(fe);
+ } else
+ dvb_frontend_swzigzag(fe);
+ }
- // slow zigzag
- if (fe->state & FESTATE_SEARCHING_SLOW) {
- update_delay(&quality, &delay, fe->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);
+ if (dvb_shutdown_timeout) {
+ if (dvb_powerdown_on_sleep)
+ if (fe->ops.set_voltage)
+ fe->ops.set_voltage(fe, SEC_VOLTAGE_OFF);
+ if (fe->ops.tuner_ops.sleep) {
+ fe->ops.tuner_ops.sleep(fe);
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 0);
}
- };
-
- if (dvb_shutdown_timeout)
- dvb_frontend_internal_ioctl (&fe->frontend, FE_SLEEP, NULL);
-
- up (&fe->sem);
+ if (fe->ops.sleep)
+ fe->ops.sleep(fe);
+ }
- fe->thread_pid = 0;
+ fepriv->thread_pid = 0;
mb();
dvb_frontend_wakeup(fe);
return 0;
}
-
-static void dvb_frontend_stop (struct dvb_frontend_data *fe)
+static void dvb_frontend_stop(struct dvb_frontend *fe)
{
unsigned long ret;
+ struct dvb_frontend_private *fepriv = fe->frontend_priv;
dprintk ("%s\n", __FUNCTION__);
- fe->exit = 1;
+ fepriv->exit = 1;
mb();
- if (!fe->thread_pid)
+ if (!fepriv->thread_pid)
return;
/* check if the thread is really alive */
- if (kill_proc(fe->thread_pid, 0, 1) == -ESRCH) {
+ if (kill_proc(fepriv->thread_pid, 0, 1) == -ESRCH) {
printk("dvb_frontend_stop: thread PID %d already died\n",
- fe->thread_pid);
+ fepriv->thread_pid);
/* make sure the mutex was not held by the thread */
- init_MUTEX (&fe->sem);
+ init_MUTEX (&fepriv->sem);
return;
}
dvb_frontend_wakeup(fe);
/* wait until the frontend thread has exited */
- ret = wait_event_interruptible(fe->wait_queue,0 == fe->thread_pid);
+ ret = wait_event_interruptible(fepriv->wait_queue,0 == fepriv->thread_pid);
if (-ERESTARTSYS != ret) {
- fe->state = FESTATE_IDLE;
+ fepriv->state = FESTATE_IDLE;
return;
}
- fe->state = FESTATE_IDLE;
+ fepriv->state = FESTATE_IDLE;
/* paranoia check in case a signal arrived */
- if (fe->thread_pid)
+ if (fepriv->thread_pid)
printk("dvb_frontend_stop: warning: thread PID %d won't exit\n",
- fe->thread_pid);
+ fepriv->thread_pid);
}
+s32 timeval_usec_diff(struct timeval lasttime, struct timeval curtime)
+{
+ return ((curtime.tv_usec < lasttime.tv_usec) ?
+ 1000000 - lasttime.tv_usec + curtime.tv_usec :
+ curtime.tv_usec - lasttime.tv_usec);
+}
+EXPORT_SYMBOL(timeval_usec_diff);
-static int dvb_frontend_start (struct dvb_frontend_data *fe)
+static inline void timeval_usec_add(struct timeval *curtime, u32 add_usec)
+{
+ curtime->tv_usec += add_usec;
+ if (curtime->tv_usec >= 1000000) {
+ curtime->tv_usec -= 1000000;
+ curtime->tv_sec++;
+ }
+}
+
+/*
+ * Sleep until gettimeofday() > waketime + add_usec
+ * This needs to be as precise as possible, but as the delay is
+ * usually between 2ms and 32ms, it is done using a scheduled msleep
+ * followed by usleep (normally a busy-wait loop) for the remainder
+ */
+void dvb_frontend_sleep_until(struct timeval *waketime, u32 add_usec)
+{
+ struct timeval lasttime;
+ s32 delta, newdelta;
+
+ timeval_usec_add(waketime, add_usec);
+
+ do_gettimeofday(&lasttime);
+ delta = timeval_usec_diff(lasttime, *waketime);
+ if (delta > 2500) {
+ msleep((delta - 1500) / 1000);
+ do_gettimeofday(&lasttime);
+ newdelta = timeval_usec_diff(lasttime, *waketime);
+ delta = (newdelta > delta) ? 0 : newdelta;
+ }
+ if (delta > 0)
+ udelay(delta);
+}
+EXPORT_SYMBOL(dvb_frontend_sleep_until);
+
+static int dvb_frontend_start(struct dvb_frontend *fe)
{
int ret;
+ struct dvb_frontend_private *fepriv = fe->frontend_priv;
dprintk ("%s\n", __FUNCTION__);
- if (fe->thread_pid) {
- if (!fe->exit)
+ if (fepriv->thread_pid) {
+ if (!fepriv->exit)
return 0;
else
- dvb_frontend_stop (fe);
+ dvb_frontend_stop (fe);
}
if (signal_pending(current))
return -EINTR;
- if (down_interruptible (&fe->sem))
+ if (down_interruptible (&fepriv->sem))
return -EINTR;
- fe->state = FESTATE_IDLE;
- fe->exit = 0;
- fe->thread_pid = 0;
+ fepriv->state = FESTATE_IDLE;
+ fepriv->exit = 0;
+ fepriv->thread_pid = 0;
mb();
ret = kernel_thread (dvb_frontend_thread, fe, 0);
+
if (ret < 0) {
printk("dvb_frontend_start: failed to start kernel_thread (%d)\n", ret);
- up(&fe->sem);
+ up(&fepriv->sem);
return ret;
}
- fe->thread_pid = ret;
+ fepriv->thread_pid = ret;
return 0;
}
-
-static int dvb_frontend_ioctl (struct inode *inode, struct file *file,
+static int dvb_frontend_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, void *parg)
{
struct dvb_device *dvbdev = file->private_data;
- struct dvb_frontend_data *fe = dvbdev->priv;
- struct dvb_frontend_tune_settings fetunesettings;
- int err = 0;
+ struct dvb_frontend *fe = dvbdev->priv;
+ struct dvb_frontend_private *fepriv = fe->frontend_priv;
+ int err = -EOPNOTSUPP;
dprintk ("%s\n", __FUNCTION__);
- if (!fe || !fe->frontend.ioctl || fe->exit)
+ if (!fe || fepriv->exit)
return -ENODEV;
- if (down_interruptible (&fe->sem))
+ if ((file->f_flags & O_ACCMODE) == O_RDONLY &&
+ (_IOC_DIR(cmd) != _IOC_READ || cmd == FE_GET_EVENT ||
+ cmd == FE_DISEQC_RECV_SLAVE_REPLY))
+ return -EPERM;
+
+ if (down_interruptible (&fepriv->sem))
return -ERESTARTSYS;
switch (cmd) {
+ case FE_GET_INFO: {
+ struct dvb_frontend_info* info = parg;
+ memcpy(info, &fe->ops.info, sizeof(struct dvb_frontend_info));
+
+ /* Force the CAN_INVERSION_AUTO bit on. If the frontend doesn't
+ * do it, it is done for it. */
+ info->caps |= FE_CAN_INVERSION_AUTO;
+ err = 0;
+ break;
+ }
+
+ case FE_READ_STATUS: {
+ fe_status_t* status = parg;
+
+ /* if retune was requested but hasn't occured yet, prevent
+ * that user get signal state from previous tuning */
+ if(fepriv->state == FESTATE_RETUNE) {
+ err=0;
+ *status = 0;
+ break;
+ }
+
+ if (fe->ops.read_status)
+ err = fe->ops.read_status(fe, status);
+ break;
+ }
+ case FE_READ_BER:
+ if (fe->ops.read_ber)
+ err = fe->ops.read_ber(fe, (__u32*) parg);
+ break;
+
+ case FE_READ_SIGNAL_STRENGTH:
+ if (fe->ops.read_signal_strength)
+ err = fe->ops.read_signal_strength(fe, (__u16*) parg);
+ break;
+
+ case FE_READ_SNR:
+ if (fe->ops.read_snr)
+ err = fe->ops.read_snr(fe, (__u16*) parg);
+ break;
+
+ case FE_READ_UNCORRECTED_BLOCKS:
+ if (fe->ops.read_ucblocks)
+ err = fe->ops.read_ucblocks(fe, (__u32*) parg);
+ break;
+
+
+ case FE_DISEQC_RESET_OVERLOAD:
+ if (fe->ops.diseqc_reset_overload) {
+ err = fe->ops.diseqc_reset_overload(fe);
+ fepriv->state = FESTATE_DISEQC;
+ fepriv->status = 0;
+ }
+ break;
+
case FE_DISEQC_SEND_MASTER_CMD:
+ if (fe->ops.diseqc_send_master_cmd) {
+ err = fe->ops.diseqc_send_master_cmd(fe, (struct dvb_diseqc_master_cmd*) parg);
+ fepriv->state = FESTATE_DISEQC;
+ fepriv->status = 0;
+ }
+ break;
+
case FE_DISEQC_SEND_BURST:
+ if (fe->ops.diseqc_send_burst) {
+ err = fe->ops.diseqc_send_burst(fe, (fe_sec_mini_cmd_t) parg);
+ fepriv->state = FESTATE_DISEQC;
+ fepriv->status = 0;
+ }
+ break;
+
case FE_SET_TONE:
- if (fe->status)
- dvb_call_frontend_notifiers (fe, 0);
- dvb_frontend_internal_ioctl (&fe->frontend, cmd, parg);
- fe->state = FESTATE_DISEQC;
+ if (fe->ops.set_tone) {
+ err = fe->ops.set_tone(fe, (fe_sec_tone_mode_t) parg);
+ fepriv->tone = (fe_sec_tone_mode_t) parg;
+ fepriv->state = FESTATE_DISEQC;
+ fepriv->status = 0;
+ }
+ break;
+
+ case FE_SET_VOLTAGE:
+ if (fe->ops.set_voltage) {
+ err = fe->ops.set_voltage(fe, (fe_sec_voltage_t) parg);
+ fepriv->voltage = (fe_sec_voltage_t) parg;
+ fepriv->state = FESTATE_DISEQC;
+ fepriv->status = 0;
+ }
+ break;
+
+ case FE_DISHNETWORK_SEND_LEGACY_CMD:
+ if (fe->ops.dishnetwork_send_legacy_command) {
+ err = fe->ops.dishnetwork_send_legacy_command(fe, (unsigned long) parg);
+ fepriv->state = FESTATE_DISEQC;
+ fepriv->status = 0;
+ } else if (fe->ops.set_voltage) {
+ /*
+ * NOTE: This is a fallback condition. Some frontends
+ * (stv0299 for instance) take longer than 8msec to
+ * respond to a set_voltage command. Those switches
+ * need custom routines to switch properly. For all
+ * other frontends, the following shoule work ok.
+ * Dish network legacy switches (as used by Dish500)
+ * are controlled by sending 9-bit command words
+ * spaced 8msec apart.
+ * the actual command word is switch/port dependant
+ * so it is up to the userspace application to send
+ * the right command.
+ * The command must always start with a '0' after
+ * initialization, so parg is 8 bits and does not
+ * include the initialization or start bit
+ */
+ unsigned long cmd = ((unsigned long) parg) << 1;
+ struct timeval nexttime;
+ struct timeval tv[10];
+ int i;
+ u8 last = 1;
+ if (dvb_frontend_debug)
+ printk("%s switch command: 0x%04lx\n", __FUNCTION__, cmd);
+ do_gettimeofday(&nexttime);
+ if (dvb_frontend_debug)
+ memcpy(&tv[0], &nexttime, sizeof(struct timeval));
+ /* before sending a command, initialize by sending
+ * a 32ms 18V to the switch
+ */
+ fe->ops.set_voltage(fe, SEC_VOLTAGE_18);
+ dvb_frontend_sleep_until(&nexttime, 32000);
+
+ for (i = 0; i < 9; i++) {
+ if (dvb_frontend_debug)
+ do_gettimeofday(&tv[i + 1]);
+ if ((cmd & 0x01) != last) {
+ /* set voltage to (last ? 13V : 18V) */
+ fe->ops.set_voltage(fe, (last) ? SEC_VOLTAGE_13 : SEC_VOLTAGE_18);
+ last = (last) ? 0 : 1;
+ }
+ cmd = cmd >> 1;
+ if (i != 8)
+ dvb_frontend_sleep_until(&nexttime, 8000);
+ }
+ if (dvb_frontend_debug) {
+ printk("%s(%d): switch delay (should be 32k followed by all 8k\n",
+ __FUNCTION__, fe->dvb->num);
+ for (i = 1; i < 10; i++)
+ printk("%d: %d\n", i, timeval_usec_diff(tv[i-1] , tv[i]));
+ }
+ err = 0;
+ fepriv->state = FESTATE_DISEQC;
+ fepriv->status = 0;
+ }
+ break;
+
+ case FE_DISEQC_RECV_SLAVE_REPLY:
+ if (fe->ops.diseqc_recv_slave_reply)
+ err = fe->ops.diseqc_recv_slave_reply(fe, (struct dvb_diseqc_slave_reply*) parg);
+ break;
+
+ case FE_ENABLE_HIGH_LNB_VOLTAGE:
+ if (fe->ops.enable_high_lnb_voltage)
+ err = fe->ops.enable_high_lnb_voltage(fe, (long) parg);
break;
- case FE_SET_FRONTEND:
- fe->state = FESTATE_RETUNE;
-
- memcpy (&fe->parameters, parg,
+ case FE_SET_FRONTEND: {
+ struct dvb_frontend_tune_settings fetunesettings;
+
+ memcpy (&fepriv->parameters, parg,
sizeof (struct dvb_frontend_parameters));
memset(&fetunesettings, 0, sizeof(struct dvb_frontend_tune_settings));
memcpy(&fetunesettings.parameters, parg,
sizeof (struct dvb_frontend_parameters));
-
- // force auto frequency inversion if requested
+
+ /* force auto frequency inversion if requested */
if (dvb_force_auto_inversion) {
- fe->parameters.inversion = INVERSION_AUTO;
+ fepriv->parameters.inversion = INVERSION_AUTO;
fetunesettings.parameters.inversion = INVERSION_AUTO;
}
+ if (fe->ops.info.type == FE_OFDM) {
+ /* without hierachical coding code_rate_LP is irrelevant,
+ * so we tolerate the otherwise invalid FEC_NONE setting */
+ if (fepriv->parameters.u.ofdm.hierarchy_information == HIERARCHY_NONE &&
+ fepriv->parameters.u.ofdm.code_rate_LP == FEC_NONE)
+ fepriv->parameters.u.ofdm.code_rate_LP = FEC_AUTO;
+ }
- // get frontend-specific tuning settings
- if (dvb_frontend_internal_ioctl(&fe->frontend, FE_GET_TUNE_SETTINGS, &fetunesettings) == 0) {
- fe->min_delay = (fetunesettings.min_delay_ms * HZ) / 1000;
- fe->max_drift = fetunesettings.max_drift;
- fe->step_size = fetunesettings.step_size;
+ /* get frontend-specific tuning settings */
+ if (fe->ops.get_tune_settings && (fe->ops.get_tune_settings(fe, &fetunesettings) == 0)) {
+ fepriv->min_delay = (fetunesettings.min_delay_ms * HZ) / 1000;
+ fepriv->max_drift = fetunesettings.max_drift;
+ fepriv->step_size = fetunesettings.step_size;
} else {
- // default values
- switch(fe->info->type) {
+ /* default values */
+ switch(fe->ops.info.type) {
case FE_QPSK:
- fe->min_delay = HZ/20; // default mindelay of 50ms
- fe->step_size = fe->parameters.u.qpsk.symbol_rate / 16000;
- fe->max_drift = fe->parameters.u.qpsk.symbol_rate / 2000;
- break;
-
+ fepriv->min_delay = HZ/20;
+ fepriv->step_size = fepriv->parameters.u.qpsk.symbol_rate / 16000;
+ fepriv->max_drift = fepriv->parameters.u.qpsk.symbol_rate / 2000;
+ break;
+
case FE_QAM:
- fe->min_delay = HZ/20; // default mindelay of 50ms
- fe->step_size = 0;
- fe->max_drift = 0; // don't want any zigzagging under DVB-C frontends
+ fepriv->min_delay = HZ/20;
+ fepriv->step_size = 0; /* no zigzag */
+ fepriv->max_drift = 0;
break;
-
+
case FE_OFDM:
- fe->min_delay = HZ/20; // default mindelay of 50ms
- fe->step_size = fe->info->frequency_stepsize * 2;
- fe->max_drift = (fe->info->frequency_stepsize * 2) + 1;
+ fepriv->min_delay = HZ/20;
+ fepriv->step_size = fe->ops.info.frequency_stepsize * 2;
+ fepriv->max_drift = (fe->ops.info.frequency_stepsize * 2) + 1;
+ break;
+ case FE_ATSC:
+ fepriv->min_delay = HZ/20;
+ fepriv->step_size = 0;
+ fepriv->max_drift = 0;
break;
}
}
- if (dvb_override_tune_delay > 0) {
- fe->min_delay = (dvb_override_tune_delay * HZ) / 1000;
- }
+ if (dvb_override_tune_delay > 0)
+ fepriv->min_delay = (dvb_override_tune_delay * HZ) / 1000;
- dvb_frontend_add_event (fe, 0);
+ fepriv->state = FESTATE_RETUNE;
+ dvb_frontend_wakeup(fe);
+ dvb_frontend_add_event(fe, 0);
+ fepriv->status = 0;
+ err = 0;
break;
+ }
case FE_GET_EVENT:
err = dvb_frontend_get_event (fe, parg, file->f_flags);
break;
- case FE_GET_FRONTEND:
- memcpy (parg, &fe->parameters,
- sizeof (struct dvb_frontend_parameters));
- /* fall-through... */
- default:
- err = dvb_frontend_internal_ioctl (&fe->frontend, cmd, parg);
- };
-
- up (&fe->sem);
- if (err < 0)
- return err;
- // Force the CAN_INVERSION_AUTO bit on. If the frontend doesn't do it, it is done for it.
- if ((cmd == FE_GET_INFO) && (err == 0)) {
- struct dvb_frontend_info* tmp = (struct dvb_frontend_info*) parg;
- tmp->caps |= FE_CAN_INVERSION_AUTO;
- }
+ case FE_GET_FRONTEND:
+ if (fe->ops.get_frontend) {
+ memcpy (parg, &fepriv->parameters, sizeof (struct dvb_frontend_parameters));
+ err = fe->ops.get_frontend(fe, (struct dvb_frontend_parameters*) parg);
+ }
+ break;
- // if the frontend has just been set, wait until the first tune has finished.
- // This ensures the app doesn't start reading data too quickly, perhaps from the
- // previous lock, which is REALLY CONFUSING TO DEBUG!
- if ((cmd == FE_SET_FRONTEND) && (err == 0)) {
- dvb_frontend_wakeup(fe);
- err = wait_event_interruptible(fe->wait_queue, fe->state & ~FESTATE_RETUNE);
- }
+ case FE_SET_FRONTEND_TUNE_MODE:
+ fepriv->tune_mode_flags = (unsigned long) parg;
+ err = 0;
+ break;
+ };
+ up (&fepriv->sem);
return err;
}
-
-static unsigned int dvb_frontend_poll (struct file *file, struct poll_table_struct *wait)
+static unsigned int dvb_frontend_poll(struct file *file, struct poll_table_struct *wait)
{
struct dvb_device *dvbdev = file->private_data;
- struct dvb_frontend_data *fe = dvbdev->priv;
+ struct dvb_frontend *fe = dvbdev->priv;
+ struct dvb_frontend_private *fepriv = fe->frontend_priv;
dprintk ("%s\n", __FUNCTION__);
- poll_wait (file, &fe->events.wait_queue, wait);
+ poll_wait (file, &fepriv->events.wait_queue, wait);
- if (fe->events.eventw != fe->events.eventr)
+ if (fepriv->events.eventw != fepriv->events.eventr)
return (POLLIN | POLLRDNORM | POLLPRI);
return 0;
}
-
-static int dvb_frontend_open (struct inode *inode, struct file *file)
+static int dvb_frontend_open(struct inode *inode, struct file *file)
{
struct dvb_device *dvbdev = file->private_data;
- struct dvb_frontend_data *fe = dvbdev->priv;
+ struct dvb_frontend *fe = dvbdev->priv;
+ struct dvb_frontend_private *fepriv = fe->frontend_priv;
int ret;
dprintk ("%s\n", __FUNCTION__);
if ((ret = dvb_generic_open (inode, file)) < 0)
return ret;
+ if (fe->ops.ts_bus_ctrl) {
+ if ((ret = fe->ops.ts_bus_ctrl (fe, 1)) < 0) {
+ dvb_generic_release (inode, file);
+ return ret;
+ }
+ }
+
if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
+
+ /* normal tune mode when opened R/W */
+ fepriv->tune_mode_flags &= ~FE_TUNE_MODE_ONESHOT;
+ fepriv->tone = -1;
+ fepriv->voltage = -1;
+
ret = dvb_frontend_start (fe);
if (ret)
dvb_generic_release (inode, file);
/* empty event queue */
- fe->events.eventr = fe->events.eventw = 0;
+ fepriv->events.eventr = fepriv->events.eventw = 0;
}
-
+
return ret;
}
-
-static int dvb_frontend_release (struct inode *inode, struct file *file)
+static int dvb_frontend_release(struct inode *inode, struct file *file)
{
struct dvb_device *dvbdev = file->private_data;
- struct dvb_frontend_data *fe = dvbdev->priv;
+ struct dvb_frontend *fe = dvbdev->priv;
+ struct dvb_frontend_private *fepriv = fe->frontend_priv;
dprintk ("%s\n", __FUNCTION__);
if ((file->f_flags & O_ACCMODE) != O_RDONLY)
- fe->release_jiffies = jiffies;
+ fepriv->release_jiffies = jiffies;
- return dvb_generic_release (inode, file);
-}
-
-
-
-int
-dvb_add_frontend_ioctls (struct dvb_adapter *adapter,
- int (*before_ioctl) (struct dvb_frontend *frontend,
- unsigned int cmd, void *arg),
- int (*after_ioctl) (struct dvb_frontend *frontend,
- unsigned int cmd, void *arg),
- void *before_after_data)
-{
- struct dvb_frontend_ioctl_data *ioctl;
- struct list_head *entry;
+ if (fe->ops.ts_bus_ctrl)
+ fe->ops.ts_bus_ctrl (fe, 0);
- dprintk ("%s\n", __FUNCTION__);
-
- if (down_interruptible (&frontend_mutex))
- return -ERESTARTSYS;
-
- ioctl = kmalloc (sizeof(struct dvb_frontend_ioctl_data), GFP_KERNEL);
-
- if (!ioctl) {
- up (&frontend_mutex);
- return -ENOMEM;
- }
-
- ioctl->adapter = adapter;
- ioctl->before_ioctl = before_ioctl;
- ioctl->after_ioctl = after_ioctl;
- ioctl->before_after_data = before_after_data;
-
- list_add_tail (&ioctl->list_head, &frontend_ioctl_list);
-
- list_for_each (entry, &frontend_list) {
- struct dvb_frontend_data *fe;
-
- fe = list_entry (entry, struct dvb_frontend_data, list_head);
-
- if (fe->frontend.i2c->adapter == adapter &&
- fe->frontend.before_ioctl == NULL &&
- fe->frontend.after_ioctl == NULL)
- {
- fe->frontend.before_ioctl = before_ioctl;
- fe->frontend.after_ioctl = after_ioctl;
- fe->frontend.before_after_data = before_after_data;
- }
- }
-
- up (&frontend_mutex);
-
- return 0;
-}
-
-
-void
-dvb_remove_frontend_ioctls (struct dvb_adapter *adapter,
- int (*before_ioctl) (struct dvb_frontend *frontend,
- unsigned int cmd, void *arg),
- int (*after_ioctl) (struct dvb_frontend *frontend,
- unsigned int cmd, void *arg))
-{
- struct list_head *entry, *n;
-
- dprintk ("%s\n", __FUNCTION__);
-
- down (&frontend_mutex);
-
- list_for_each (entry, &frontend_list) {
- struct dvb_frontend_data *fe;
-
- fe = list_entry (entry, struct dvb_frontend_data, list_head);
-
- if (fe->frontend.i2c->adapter == adapter &&
- fe->frontend.before_ioctl == before_ioctl &&
- fe->frontend.after_ioctl == after_ioctl)
- {
- fe->frontend.before_ioctl = NULL;
- fe->frontend.after_ioctl = NULL;
-
- }
- }
-
- list_for_each_safe (entry, n, &frontend_ioctl_list) {
- struct dvb_frontend_ioctl_data *ioctl;
-
- ioctl = list_entry (entry, struct dvb_frontend_ioctl_data, list_head);
-
- if (ioctl->adapter == adapter &&
- ioctl->before_ioctl == before_ioctl &&
- ioctl->after_ioctl == after_ioctl)
- {
- list_del (&ioctl->list_head);
- kfree (ioctl);
-
- break;
- }
- }
-
- up (&frontend_mutex);
-}
-
-
-int
-dvb_add_frontend_notifier (struct dvb_adapter *adapter,
- void (*callback) (fe_status_t s, void *data),
- void *data)
-{
- struct dvb_frontend_notifier_data *notifier;
- struct list_head *entry;
-
- dprintk ("%s\n", __FUNCTION__);
-
- if (down_interruptible (&frontend_mutex))
- return -ERESTARTSYS;
-
- notifier = kmalloc (sizeof(struct dvb_frontend_notifier_data), GFP_KERNEL);
-
- if (!notifier) {
- up (&frontend_mutex);
- return -ENOMEM;
- }
-
- notifier->adapter = adapter;
- notifier->callback = callback;
- notifier->data = data;
-
- list_add_tail (¬ifier->list_head, &frontend_notifier_list);
-
- list_for_each (entry, &frontend_list) {
- struct dvb_frontend_data *fe;
-
- fe = list_entry (entry, struct dvb_frontend_data, list_head);
-
- if (fe->frontend.i2c->adapter == adapter &&
- fe->frontend.notifier_callback == NULL)
- {
- fe->frontend.notifier_callback = callback;
- fe->frontend.notifier_data = data;
- }
- }
-
- up (&frontend_mutex);
-
- return 0;
-}
-
-
-void
-dvb_remove_frontend_notifier (struct dvb_adapter *adapter,
- void (*callback) (fe_status_t s, void *data))
-{
- struct list_head *entry, *n;
-
- dprintk ("%s\n", __FUNCTION__);
-
- down (&frontend_mutex);
-
- list_for_each (entry, &frontend_list) {
- struct dvb_frontend_data *fe;
-
- fe = list_entry (entry, struct dvb_frontend_data, list_head);
-
- if (fe->frontend.i2c->adapter == adapter &&
- fe->frontend.notifier_callback == callback)
- {
- fe->frontend.notifier_callback = NULL;
-
- }
- }
-
- list_for_each_safe (entry, n, &frontend_notifier_list) {
- struct dvb_frontend_notifier_data *notifier;
-
- notifier = list_entry (entry, struct dvb_frontend_notifier_data, list_head);
-
- if (notifier->adapter == adapter &&
- notifier->callback == callback)
- {
- list_del (¬ifier->list_head);
- kfree (notifier);
-
- break;
- }
- }
-
- up (&frontend_mutex);
+ return dvb_generic_release (inode, file);
}
-
static struct file_operations dvb_frontend_fops = {
.owner = THIS_MODULE,
.ioctl = dvb_generic_ioctl,
.release = dvb_frontend_release
};
-
-
-int
-dvb_register_frontend (int (*ioctl) (struct dvb_frontend *frontend,
- unsigned int cmd, void *arg),
- struct dvb_i2c_bus *i2c,
- void *data,
- struct dvb_frontend_info *info)
+int dvb_register_frontend(struct dvb_adapter* dvb,
+ struct dvb_frontend* fe)
{
- struct list_head *entry;
- struct dvb_frontend_data *fe;
+ struct dvb_frontend_private *fepriv;
static const struct dvb_device dvbdev_template = {
.users = ~0,
.writers = 1,
dprintk ("%s\n", __FUNCTION__);
- if (down_interruptible (&frontend_mutex))
+ if (mutex_lock_interruptible(&frontend_mutex))
return -ERESTARTSYS;
- if (!(fe = kmalloc (sizeof (struct dvb_frontend_data), GFP_KERNEL))) {
- up (&frontend_mutex);
+ fe->frontend_priv = kzalloc(sizeof(struct dvb_frontend_private), GFP_KERNEL);
+ if (fe->frontend_priv == NULL) {
+ mutex_unlock(&frontend_mutex);
return -ENOMEM;
}
+ fepriv = fe->frontend_priv;
- memset (fe, 0, sizeof (struct dvb_frontend_data));
-
- init_MUTEX (&fe->sem);
- init_waitqueue_head (&fe->wait_queue);
- init_waitqueue_head (&fe->events.wait_queue);
- init_MUTEX (&fe->events.sem);
- fe->events.eventw = fe->events.eventr = 0;
- fe->events.overflow = 0;
-
- fe->frontend.ioctl = ioctl;
- fe->frontend.i2c = i2c;
- fe->frontend.data = data;
- fe->info = info;
- fe->inversion = INVERSION_OFF;
-
- list_for_each (entry, &frontend_ioctl_list) {
- struct dvb_frontend_ioctl_data *ioctl;
-
- ioctl = list_entry (entry,
- struct dvb_frontend_ioctl_data,
- list_head);
-
- if (ioctl->adapter == i2c->adapter) {
- fe->frontend.before_ioctl = ioctl->before_ioctl;
- fe->frontend.after_ioctl = ioctl->after_ioctl;
- fe->frontend.before_after_data = ioctl->before_after_data;
- break;
- }
- }
-
- list_for_each (entry, &frontend_notifier_list) {
- struct dvb_frontend_notifier_data *notifier;
+ init_MUTEX (&fepriv->sem);
+ init_waitqueue_head (&fepriv->wait_queue);
+ init_waitqueue_head (&fepriv->events.wait_queue);
+ init_MUTEX (&fepriv->events.sem);
+ fe->dvb = dvb;
+ fepriv->inversion = INVERSION_OFF;
- notifier = list_entry (entry,
- struct dvb_frontend_notifier_data,
- list_head);
+ printk ("DVB: registering frontend %i (%s)...\n",
+ fe->dvb->num,
+ fe->ops.info.name);
- if (notifier->adapter == i2c->adapter) {
- fe->frontend.notifier_callback = notifier->callback;
- fe->frontend.notifier_data = notifier->data;
- break;
- }
- }
-
- list_add_tail (&fe->list_head, &frontend_list);
-
- printk ("DVB: registering frontend %i:%i (%s)...\n",
- fe->frontend.i2c->adapter->num, fe->frontend.i2c->id,
- fe->info->name);
-
- dvb_register_device (i2c->adapter, &fe->dvbdev, &dvbdev_template,
+ dvb_register_device (fe->dvb, &fepriv->dvbdev, &dvbdev_template,
fe, DVB_DEVICE_FRONTEND);
- if ((info->caps & FE_NEEDS_BENDING) || (dvb_override_frequency_bending == 2))
- do_frequency_bending = 1;
-
- up (&frontend_mutex);
-
+ mutex_unlock(&frontend_mutex);
return 0;
}
+EXPORT_SYMBOL(dvb_register_frontend);
-
-int dvb_unregister_frontend (int (*ioctl) (struct dvb_frontend *frontend,
- unsigned int cmd, void *arg),
- struct dvb_i2c_bus *i2c)
+int dvb_unregister_frontend(struct dvb_frontend* fe)
{
- struct list_head *entry, *n;
-
+ struct dvb_frontend_private *fepriv = fe->frontend_priv;
dprintk ("%s\n", __FUNCTION__);
- down (&frontend_mutex);
+ mutex_lock(&frontend_mutex);
+ dvb_unregister_device (fepriv->dvbdev);
+ dvb_frontend_stop (fe);
- list_for_each_safe (entry, n, &frontend_list) {
- struct dvb_frontend_data *fe;
+ /* fe is invalid now */
+ kfree(fepriv);
+ mutex_unlock(&frontend_mutex);
+ return 0;
+}
+EXPORT_SYMBOL(dvb_unregister_frontend);
- fe = list_entry (entry, struct dvb_frontend_data, list_head);
+#ifdef CONFIG_DVB_CORE_ATTACH
+void dvb_frontend_detach(struct dvb_frontend* fe)
+{
+ void *ptr;
- if (fe->frontend.ioctl == ioctl && fe->frontend.i2c == i2c) {
- dvb_unregister_device (fe->dvbdev);
- list_del (entry);
- up (&frontend_mutex);
- dvb_frontend_stop (fe);
- kfree (fe);
- return 0;
- }
+ if (fe->ops.release_sec) {
+ fe->ops.release_sec(fe);
+ symbol_put_addr(fe->ops.release_sec);
+ }
+ if (fe->ops.tuner_ops.release) {
+ fe->ops.tuner_ops.release(fe);
+ symbol_put_addr(fe->ops.tuner_ops.release);
+ }
+ ptr = (void*)fe->ops.release;
+ if (ptr) {
+ fe->ops.release(fe);
+ symbol_put_addr(ptr);
}
-
- up (&frontend_mutex);
- return -EINVAL;
}
-
-MODULE_PARM(dvb_frontend_debug,"i");
-MODULE_PARM(dvb_shutdown_timeout,"i");
-MODULE_PARM(dvb_override_frequency_bending,"i");
-MODULE_PARM(dvb_force_auto_inversion,"i");
-MODULE_PARM(dvb_override_tune_delay,"i");
-
-MODULE_PARM_DESC(dvb_frontend_debug, "enable verbose debug messages");
-MODULE_PARM_DESC(dvb_shutdown_timeout, "wait <shutdown_timeout> seconds after close() before suspending hardware");
-MODULE_PARM_DESC(dvb_override_frequency_bending, "0: normal (default), 1: never use frequency bending, 2: always use frequency bending");
-MODULE_PARM_DESC(dvb_force_auto_inversion, "0: normal (default), 1: INVERSION_AUTO forced always");
-MODULE_PARM_DESC(dvb_override_tune_delay, "0: normal (default), >0 => delay in milliseconds to wait for lock after a tune attempt");
+#else
+void dvb_frontend_detach(struct dvb_frontend* fe)
+{
+ if (fe->ops.release_sec)
+ fe->ops.release_sec(fe);
+ if (fe->ops.tuner_ops.release)
+ fe->ops.tuner_ops.release(fe);
+ if (fe->ops.release)
+ fe->ops.release(fe);
+}
+#endif
+EXPORT_SYMBOL(dvb_frontend_detach);
git://git.onelab.eu / linux-2.6.git / blobdiff