/*
- * dvb_frontend.c: DVB frontend tuning interface/thread
- *
+ * dvb-core.c: DVB core driver
*
* Copyright (C) 1999-2001 Ralph Metzler
* Marcus Metzler
#include <linux/slab.h>
#include <linux/poll.h>
#include <linux/module.h>
-#include <linux/moduleparam.h>
#include <linux/list.h>
-#include <linux/suspend.h>
#include <asm/processor.h>
#include <asm/semaphore.h>
#include "dvb_frontend.h"
#include "dvbdev.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(dvb_frontend_debug, "Turn on/off frontend core debugging (default:off).");
-module_param(dvb_shutdown_timeout, int, 0444);
-MODULE_PARM_DESC(dvb_shutdown_timeout, "wait <shutdown_timeout> seconds after close() before suspending hardware");
-module_param(dvb_force_auto_inversion, int, 0444);
-MODULE_PARM_DESC(dvb_force_auto_inversion, "0: normal (default), 1: INVERSION_AUTO forced always");
-module_param(dvb_override_tune_delay, int, 0444);
-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, 0444);
-MODULE_PARM_DESC(dvb_powerdown_on_sleep, "0: do not power down, 1: turn LNB volatage off on sleep (default)");
-
-#define dprintk if (dvb_frontend_debug) printk
+#include "dvb_functions.h"
#define FESTATE_IDLE 1
#define FESTATE_RETUNE 2
* FESTATE_LOSTLOCK. When the lock has been lost, and we're searching it again.
*/
+
+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_data {
+ struct dvb_frontend_info *info;
+ struct dvb_frontend frontend;
+ struct dvb_device *dvbdev;
+ struct dvb_frontend_parameters parameters;
+ struct dvb_fe_events events;
+ struct semaphore sem;
+ struct list_head list_head;
+ 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;
+ 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;
+};
+
+
+static LIST_HEAD(frontend_list);
+static LIST_HEAD(frontend_ioctl_list);
+static LIST_HEAD(frontend_notifier_list);
+
static DECLARE_MUTEX(frontend_mutex);
-static void dvb_frontend_add_event(struct dvb_frontend *fe, fe_status_t status)
+
+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)
+{
+ 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_event *e;
sizeof (struct dvb_frontend_parameters));
if (status & FE_HAS_LOCK)
- if (fe->ops->get_frontend)
- fe->ops->get_frontend(fe, &e->parameters);
-
+ dvb_frontend_internal_ioctl (&fe->frontend,
+ FE_GET_FRONTEND,
+ &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 *fe,
+
+static int dvb_frontend_get_event (struct dvb_frontend_data *fe,
struct dvb_frontend_event *event, int flags)
{
struct dvb_fe_events *events = &fe->events;
return 0;
}
-static void dvb_frontend_init(struct dvb_frontend *fe)
+static void dvb_frontend_init (struct dvb_frontend_data *fe)
{
- dprintk ("DVB: initialising frontend %i (%s)...\n",
- fe->dvb->num,
- fe->ops->info.name);
+ struct dvb_frontend *frontend = &fe->frontend;
- if (fe->ops->init)
- fe->ops->init(fe);
+ dprintk ("DVB: initialising frontend %i:%i (%s)...\n",
+ frontend->i2c->adapter->num, frontend->i2c->id,
+ fe->info->name);
+
+ dvb_frontend_internal_ioctl (frontend, FE_INIT, NULL);
}
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_autotune(struct dvb_frontend_data *fe, int check_wrapped)
{
int autoinversion;
int ready = 0;
int original_inversion = fe->parameters.inversion;
u32 original_frequency = fe->parameters.frequency;
- /* are we using autoinversion? */
- autoinversion = ((!(fe->ops->info.caps & FE_CAN_INVERSION_AUTO)) &&
- (fe->parameters.inversion == INVERSION_AUTO));
+ // are we using autoinversion?
+ autoinversion = ((!(fe->info->caps & FE_CAN_INVERSION_AUTO)) && (fe->parameters.inversion == INVERSION_AUTO));
- /* setup parameters correctly */
+ // setup parameters correctly
while(!ready) {
- /* calculate the lnb_drift */
+ // calculate the lnb_drift
fe->lnb_drift = fe->auto_step * fe->step_size;
- /* wrap the auto_step if we've exceeded the maximum drift */
+ // 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;
}
- /* perform inversion and +/- zigzag */
+ // perform inversion and +/- zigzag
switch(fe->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;
default:
fe->auto_step++;
- fe->auto_sub_step = -1; /* it'll be incremented to 0 in a moment */
+ fe->auto_sub_step = -1; // it'll be incremented to 0 in a moment
break;
}
if (!ready) fe->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 ((fe->auto_step == fe->started_auto_step) && (fe->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__, fe->lnb_drift, fe->inversion,
- fe->auto_step, fe->auto_sub_step, fe->started_auto_step);
-
- /* set the frontend itself */
- fe->parameters.frequency += fe->lnb_drift;
- if (autoinversion)
- fe->parameters.inversion = fe->inversion;
- if (fe->ops->set_frontend)
- fe->ops->set_frontend(fe, &fe->parameters);
+ // 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++;
return 0;
}
-static int dvb_frontend_is_exiting(struct dvb_frontend *fe)
+
+
+static int dvb_frontend_is_exiting (struct dvb_frontend_data *fe)
{
if (fe->exit)
return 1;
return 0;
}
-static int dvb_frontend_should_wakeup(struct dvb_frontend *fe)
+static int dvb_frontend_should_wakeup (struct dvb_frontend_data *fe)
{
if (fe->wakeup) {
fe->wakeup = 0;
return dvb_frontend_is_exiting(fe);
}
-static void dvb_frontend_wakeup(struct dvb_frontend *fe)
-{
+static void dvb_frontend_wakeup (struct dvb_frontend_data *fe) {
fe->wakeup = 1;
wake_up_interruptible(&fe->wait_queue);
}
-/*
- * FIXME: use linux/kthread.h
- */
static int dvb_frontend_thread (void *data)
{
- struct dvb_frontend *fe = (struct dvb_frontend *) data;
+ struct dvb_frontend_data *fe = (struct dvb_frontend_data *) data;
unsigned long timeout;
char name [15];
int quality = 0, delay = 3*HZ;
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);
- fe->status = 0;
+ dvb_call_frontend_notifiers (fe, 0);
dvb_frontend_init (fe);
fe->wakeup = 0;
while (1) {
up (&fe->sem); /* is locked when we enter the thread... */
- timeout = wait_event_interruptible_timeout(fe->wait_queue,
- dvb_frontend_should_wakeup(fe),
- delay);
- if (0 != dvb_frontend_is_exiting (fe)) {
+ timeout = wait_event_interruptible_timeout(fe->wait_queue,0 != dvb_frontend_should_wakeup (fe), delay);
+ if (-ERESTARTSYS == timeout || 0 != dvb_frontend_is_exiting (fe)) {
/* got signal or quitting */
break;
}
- if (current->flags & PF_FREEZE)
- refrigerator(PF_FREEZE);
-
if (down_interruptible (&fe->sem))
break;
- /* if we've got no parameters, just keep idling */
+ // if we've got no parameters, just keep idling
if (fe->state & FESTATE_IDLE) {
delay = 3*HZ;
quality = 0;
continue;
}
-retune:
- /* get the frontend status */
- if (fe->state & FESTATE_RETUNE) {
- s = 0;
- } else {
- if (fe->ops->read_status)
- fe->ops->read_status(fe, &s);
- if (s != fe->status) {
+ // get the frontend status
+ dvb_frontend_internal_ioctl (&fe->frontend, FE_READ_STATUS, &s);
+ if (s != fe->status)
dvb_frontend_add_event (fe, s);
- fe->status = s;
- }
- }
- /* if we're not tuned, and we have a lock, move to the TUNED state */
+
+ // 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 we're tuned, then we have determined the correct inversion */
- if ((!(fe->ops->info.caps & FE_CAN_INVERSION_AUTO)) &&
- (fe->parameters.inversion == INVERSION_AUTO)) {
+ // 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;
}
continue;
}
- /* if we are tuned already, check we're still locked */
+ // 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)
+ // 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 */
+ } 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
}
}
- /* 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 */
+ // 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->ops->info.caps & FE_CAN_RECOVER) && (fe->max_drift == 0)) {
+ (fe->info->caps & FE_CAN_RECOVER) && (fe->max_drift == 0)) {
update_delay(&quality, &delay, fe->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. */
+ // 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 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;
check_wrapped = 0;
}
- /* fast zigzag. */
+ // fast zigzag.
if ((fe->state & FESTATE_SEARCHING_FAST) || (fe->state & FESTATE_RETUNE)) {
delay = fe->min_delay;
- /* peform a tune */
+ // 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 */
+ // 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 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;
- goto retune;
+ wake_up_interruptible(&fe->wait_queue);
}
}
- /* slow zigzag */
+ // 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 */
+ // 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->sleep)
- fe->ops->sleep(fe);
- }
+ if (dvb_shutdown_timeout)
+ dvb_frontend_internal_ioctl (&fe->frontend, FE_SLEEP, NULL);
+
+ up (&fe->sem);
fe->thread_pid = 0;
mb();
return 0;
}
-static void dvb_frontend_stop(struct dvb_frontend *fe)
+
+static void dvb_frontend_stop (struct dvb_frontend_data *fe)
{
unsigned long ret;
fe->thread_pid);
}
-static int dvb_frontend_start(struct dvb_frontend *fe)
+
+static int dvb_frontend_start (struct dvb_frontend_data *fe)
{
int ret;
unsigned int cmd, void *parg)
{
struct dvb_device *dvbdev = file->private_data;
- struct dvb_frontend *fe = dvbdev->priv;
- int err = -EOPNOTSUPP;
+ struct dvb_frontend_data *fe = dvbdev->priv;
+ struct dvb_frontend_tune_settings fetunesettings;
+ int err = 0;
dprintk ("%s\n", __FUNCTION__);
- if (!fe || fe->exit)
+ if (!fe || !fe->frontend.ioctl || fe->exit)
return -ENODEV;
- 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 (&fe->sem))
return -ERESTARTSYS;
switch (cmd) {
- case FE_GET_INFO: {
- struct dvb_frontend_info* info = (struct dvb_frontend_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:
- if (fe->ops->read_status)
- err = fe->ops->read_status(fe, (fe_status_t*) parg);
- 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);
- fe->state = FESTATE_DISEQC;
- fe->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);
- fe->state = FESTATE_DISEQC;
- fe->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);
- fe->state = FESTATE_DISEQC;
- fe->status = 0;
- }
- break;
-
case FE_SET_TONE:
- if (fe->ops->set_tone) {
- err = fe->ops->set_tone(fe, (fe_sec_tone_mode_t) parg);
- fe->state = FESTATE_DISEQC;
- fe->status = 0;
- }
- break;
-
- case FE_SET_VOLTAGE:
- if (fe->ops->set_voltage) {
- err = fe->ops->set_voltage(fe, (fe_sec_voltage_t) parg);
+ if (fe->status)
+ dvb_call_frontend_notifiers (fe, 0);
+ dvb_frontend_internal_ioctl (&fe->frontend, cmd, parg);
fe->state = FESTATE_DISEQC;
- fe->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 int) parg);
- fe->state = FESTATE_DISEQC;
- fe->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, (int) parg);
- break;
-
- case FE_SET_FRONTEND: {
- struct dvb_frontend_tune_settings fetunesettings;
+ case FE_SET_FRONTEND:
+ fe->state = FESTATE_RETUNE;
memcpy (&fe->parameters, parg,
sizeof (struct dvb_frontend_parameters));
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;
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 (fe->parameters.u.ofdm.hierarchy_information == HIERARCHY_NONE &&
- fe->parameters.u.ofdm.code_rate_LP == FEC_NONE)
- fe->parameters.u.ofdm.code_rate_LP = FEC_AUTO;
- }
- /* get frontend-specific tuning settings */
- if (fe->ops->get_tune_settings && (fe->ops->get_tune_settings(fe, &fetunesettings) == 0)) {
+ // 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;
} else {
- /* default values */
- switch(fe->ops->info.type) {
+ // default values
+ switch(fe->info->type) {
case FE_QPSK:
- fe->min_delay = HZ/20;
+ 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;
case FE_QAM:
- fe->min_delay = HZ/20;
- fe->step_size = 0; /* no zigzag */
- fe->max_drift = 0;
+ 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
break;
case FE_OFDM:
- fe->min_delay = HZ/20;
- fe->step_size = fe->ops->info.frequency_stepsize * 2;
- fe->max_drift = (fe->ops->info.frequency_stepsize * 2) + 1;
- break;
- case FE_ATSC:
- printk("dvb-core: FE_ATSC not handled yet.\n");
+ 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;
break;
}
}
- if (dvb_override_tune_delay > 0)
+ if (dvb_override_tune_delay > 0) {
fe->min_delay = (dvb_override_tune_delay * HZ) / 1000;
+ }
- fe->state = FESTATE_RETUNE;
- dvb_frontend_wakeup(fe);
dvb_frontend_add_event (fe, 0);
- fe->status = 0;
- err = 0;
break;
- }
case FE_GET_EVENT:
err = dvb_frontend_get_event (fe, parg, file->f_flags);
break;
-
case FE_GET_FRONTEND:
- if (fe->ops->get_frontend) {
- memcpy (parg, &fe->parameters, sizeof (struct dvb_frontend_parameters));
- err = fe->ops->get_frontend(fe, (struct dvb_frontend_parameters*) parg);
- }
- break;
+ 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;
+ }
+
+ // 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);
+ }
+
return err;
}
static unsigned int dvb_frontend_poll (struct file *file, struct poll_table_struct *wait)
{
struct dvb_device *dvbdev = file->private_data;
- struct dvb_frontend *fe = dvbdev->priv;
+ struct dvb_frontend_data *fe = dvbdev->priv;
dprintk ("%s\n", __FUNCTION__);
static int dvb_frontend_open (struct inode *inode, struct file *file)
{
struct dvb_device *dvbdev = file->private_data;
- struct dvb_frontend *fe = dvbdev->priv;
+ struct dvb_frontend_data *fe = dvbdev->priv;
int ret;
dprintk ("%s\n", __FUNCTION__);
static int dvb_frontend_release (struct inode *inode, struct file *file)
{
struct dvb_device *dvbdev = file->private_data;
- struct dvb_frontend *fe = dvbdev->priv;
+ struct dvb_frontend_data *fe = dvbdev->priv;
dprintk ("%s\n", __FUNCTION__);
}
+
+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;
+
+ 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);
+}
+
+
static struct file_operations dvb_frontend_fops = {
.owner = THIS_MODULE,
.ioctl = dvb_generic_ioctl,
.release = dvb_frontend_release
};
-int dvb_register_frontend(struct dvb_adapter* dvb,
- struct dvb_frontend* fe)
+
+
+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)
{
+ struct list_head *entry;
+ struct dvb_frontend_data *fe;
static const struct dvb_device dvbdev_template = {
.users = ~0,
.writers = 1,
if (down_interruptible (&frontend_mutex))
return -ERESTARTSYS;
+ if (!(fe = kmalloc (sizeof (struct dvb_frontend_data), GFP_KERNEL))) {
+ up (&frontend_mutex);
+ return -ENOMEM;
+ }
+
+ 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->dvb = dvb;
+
+ fe->frontend.ioctl = ioctl;
+ fe->frontend.i2c = i2c;
+ fe->frontend.data = data;
+ fe->info = info;
fe->inversion = INVERSION_OFF;
- printk ("DVB: registering frontend %i (%s)...\n",
- fe->dvb->num,
- fe->ops->info.name);
+ 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;
+
+ notifier = list_entry (entry,
+ struct dvb_frontend_notifier_data,
+ list_head);
- dvb_register_device (fe->dvb, &fe->dvbdev, &dvbdev_template,
+ 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,
fe, DVB_DEVICE_FRONTEND);
+ if ((info->caps & FE_NEEDS_BENDING) || (dvb_override_frequency_bending == 2))
+ do_frequency_bending = 1;
+
up (&frontend_mutex);
+
return 0;
}
-EXPORT_SYMBOL(dvb_register_frontend);
-int dvb_unregister_frontend(struct dvb_frontend* fe)
+
+int dvb_unregister_frontend (int (*ioctl) (struct dvb_frontend *frontend,
+ unsigned int cmd, void *arg),
+ struct dvb_i2c_bus *i2c)
{
+ struct list_head *entry, *n;
+
dprintk ("%s\n", __FUNCTION__);
down (&frontend_mutex);
+
+ list_for_each_safe (entry, n, &frontend_list) {
+ struct dvb_frontend_data *fe;
+
+ fe = list_entry (entry, struct dvb_frontend_data, list_head);
+
+ if (fe->frontend.ioctl == ioctl && fe->frontend.i2c == i2c) {
dvb_unregister_device (fe->dvbdev);
+ list_del (entry);
+ up (&frontend_mutex);
dvb_frontend_stop (fe);
- if (fe->ops->release)
- fe->ops->release(fe);
- else
- printk("dvb_frontend: Demodulator (%s) does not have a release callback!\n", fe->ops->info.name);
+ kfree (fe);
+ return 0;
+ }
+ }
+
up (&frontend_mutex);
- return 0;
+ return -EINVAL;
}
-EXPORT_SYMBOL(dvb_unregister_frontend);
+
+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");
git://git.onelab.eu / linux-2.6.git / blobdiff