b87625f0cc
Tuning DVB-T via the S2API was failing, missing some essential items. Signed-off-by: Steven Toth <stoth@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
1865 lines
50 KiB
C
1865 lines
50 KiB
C
/*
|
|
* dvb_frontend.c: DVB frontend tuning interface/thread
|
|
*
|
|
*
|
|
* Copyright (C) 1999-2001 Ralph Metzler
|
|
* Marcus Metzler
|
|
* Holger Waechtler
|
|
* for convergence integrated media GmbH
|
|
*
|
|
* Copyright (C) 2004 Andrew de Quincey (tuning thread cleanup)
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* 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
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
* Or, point your browser to http://www.gnu.org/copyleft/gpl.html
|
|
*/
|
|
|
|
#include <linux/string.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/wait.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/poll.h>
|
|
#include <linux/module.h>
|
|
#include <linux/list.h>
|
|
#include <linux/freezer.h>
|
|
#include <linux/jiffies.h>
|
|
#include <linux/kthread.h>
|
|
#include <asm/processor.h>
|
|
|
|
#include "dvb_frontend.h"
|
|
#include "dvbdev.h"
|
|
#include <linux/dvb/version.h>
|
|
|
|
static int dvb_frontend_debug;
|
|
static int dvb_shutdown_timeout;
|
|
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_TUNING_FAST 4
|
|
#define FESTATE_TUNING_SLOW 8
|
|
#define FESTATE_TUNED 16
|
|
#define FESTATE_ZIGZAG_FAST 32
|
|
#define FESTATE_ZIGZAG_SLOW 64
|
|
#define FESTATE_DISEQC 128
|
|
#define FESTATE_WAITFORLOCK (FESTATE_TUNING_FAST | FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW | FESTATE_DISEQC)
|
|
#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_TUNING_FAST. Tuning parameters have been supplied and fast zigzag scan is in progress.
|
|
* FESTATE_TUNING_SLOW. Tuning parameters have been supplied. Fast zigzag failed, so we're trying again, but slower.
|
|
* FESTATE_TUNED. The frontend has successfully locked on.
|
|
* FESTATE_ZIGZAG_FAST. The lock has been lost, and a fast zigzag has been initiated to try and regain it.
|
|
* FESTATE_ZIGZAG_SLOW. The lock has been lost. Fast zigzag has been failed, so we're trying again, but slower.
|
|
* FESTATE_DISEQC. A DISEQC command has just been issued.
|
|
* FESTATE_WAITFORLOCK. When we're waiting for a lock.
|
|
* FESTATE_SEARCHING_FAST. When we're searching for a signal using a fast zigzag scan.
|
|
* FESTATE_SEARCHING_SLOW. When we're searching for a signal using a slow zigzag scan.
|
|
* FESTATE_LOSTLOCK. When the lock has been lost, and we're searching it again.
|
|
*/
|
|
|
|
static DEFINE_MUTEX(frontend_mutex);
|
|
|
|
struct dvb_frontend_private {
|
|
|
|
/* thread/frontend values */
|
|
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;
|
|
struct task_struct *thread;
|
|
unsigned long release_jiffies;
|
|
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;
|
|
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 void dvb_frontend_add_event(struct dvb_frontend *fe, fe_status_t status)
|
|
{
|
|
struct dvb_frontend_private *fepriv = fe->frontend_priv;
|
|
struct dvb_fe_events *events = &fepriv->events;
|
|
struct dvb_frontend_event *e;
|
|
int wp;
|
|
|
|
dprintk ("%s\n", __func__);
|
|
|
|
if (mutex_lock_interruptible (&events->mtx))
|
|
return;
|
|
|
|
wp = (events->eventw + 1) % MAX_EVENT;
|
|
|
|
if (wp == events->eventr) {
|
|
events->overflow = 1;
|
|
events->eventr = (events->eventr + 1) % MAX_EVENT;
|
|
}
|
|
|
|
e = &events->events[events->eventw];
|
|
|
|
memcpy (&e->parameters, &fepriv->parameters,
|
|
sizeof (struct dvb_frontend_parameters));
|
|
|
|
if (status & FE_HAS_LOCK)
|
|
if (fe->ops.get_frontend)
|
|
fe->ops.get_frontend(fe, &e->parameters);
|
|
|
|
events->eventw = wp;
|
|
|
|
mutex_unlock(&events->mtx);
|
|
|
|
e->status = status;
|
|
|
|
wake_up_interruptible (&events->wait_queue);
|
|
}
|
|
|
|
static int dvb_frontend_get_event(struct dvb_frontend *fe,
|
|
struct dvb_frontend_event *event, int flags)
|
|
{
|
|
struct dvb_frontend_private *fepriv = fe->frontend_priv;
|
|
struct dvb_fe_events *events = &fepriv->events;
|
|
|
|
dprintk ("%s\n", __func__);
|
|
|
|
if (events->overflow) {
|
|
events->overflow = 0;
|
|
return -EOVERFLOW;
|
|
}
|
|
|
|
if (events->eventw == events->eventr) {
|
|
int ret;
|
|
|
|
if (flags & O_NONBLOCK)
|
|
return -EWOULDBLOCK;
|
|
|
|
up(&fepriv->sem);
|
|
|
|
ret = wait_event_interruptible (events->wait_queue,
|
|
events->eventw != events->eventr);
|
|
|
|
if (down_interruptible (&fepriv->sem))
|
|
return -ERESTARTSYS;
|
|
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
if (mutex_lock_interruptible (&events->mtx))
|
|
return -ERESTARTSYS;
|
|
|
|
memcpy (event, &events->events[events->eventr],
|
|
sizeof(struct dvb_frontend_event));
|
|
|
|
events->eventr = (events->eventr + 1) % MAX_EVENT;
|
|
|
|
mutex_unlock(&events->mtx);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void dvb_frontend_init(struct dvb_frontend *fe)
|
|
{
|
|
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);
|
|
}
|
|
}
|
|
|
|
void dvb_frontend_reinitialise(struct dvb_frontend *fe)
|
|
{
|
|
struct dvb_frontend_private *fepriv = fe->frontend_priv;
|
|
|
|
fepriv->reinitialise = 1;
|
|
dvb_frontend_wakeup(fe);
|
|
}
|
|
EXPORT_SYMBOL(dvb_frontend_reinitialise);
|
|
|
|
static void dvb_frontend_swzigzag_update_delay(struct dvb_frontend_private *fepriv, int locked)
|
|
{
|
|
int q2;
|
|
|
|
dprintk ("%s\n", __func__);
|
|
|
|
if (locked)
|
|
(fepriv->quality) = (fepriv->quality * 220 + 36*256) / 256;
|
|
else
|
|
(fepriv->quality) = (fepriv->quality * 220 + 0) / 256;
|
|
|
|
q2 = fepriv->quality - 128;
|
|
q2 *= q2;
|
|
|
|
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_swzigzag_autotune(struct dvb_frontend *fe, int check_wrapped)
|
|
{
|
|
int autoinversion;
|
|
int ready = 0;
|
|
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->ops.info.caps & FE_CAN_INVERSION_AUTO)) &&
|
|
(fepriv->parameters.inversion == INVERSION_AUTO));
|
|
|
|
/* setup parameters correctly */
|
|
while(!ready) {
|
|
/* 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(fepriv->auto_sub_step) {
|
|
case 0:
|
|
/* try with the current inversion and current drift setting */
|
|
ready = 1;
|
|
break;
|
|
|
|
case 1:
|
|
if (!autoinversion) break;
|
|
|
|
fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF;
|
|
ready = 1;
|
|
break;
|
|
|
|
case 2:
|
|
if (fepriv->lnb_drift == 0) break;
|
|
|
|
fepriv->lnb_drift = -fepriv->lnb_drift;
|
|
ready = 1;
|
|
break;
|
|
|
|
case 3:
|
|
if (fepriv->lnb_drift == 0) break;
|
|
if (!autoinversion) break;
|
|
|
|
fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF;
|
|
fepriv->lnb_drift = -fepriv->lnb_drift;
|
|
ready = 1;
|
|
break;
|
|
|
|
default:
|
|
fepriv->auto_step++;
|
|
fepriv->auto_sub_step = -1; /* it'll be incremented to 0 in a moment */
|
|
break;
|
|
}
|
|
|
|
if (!ready) fepriv->auto_sub_step++;
|
|
}
|
|
|
|
/* 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",
|
|
__func__, fepriv->lnb_drift, fepriv->inversion,
|
|
fepriv->auto_step, fepriv->auto_sub_step, fepriv->started_auto_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 *fe)
|
|
{
|
|
struct dvb_frontend_private *fepriv = fe->frontend_priv;
|
|
|
|
if (fepriv->exit)
|
|
return 1;
|
|
|
|
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 *fe)
|
|
{
|
|
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 *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)
|
|
{
|
|
struct dvb_frontend *fe = data;
|
|
struct dvb_frontend_private *fepriv = fe->frontend_priv;
|
|
unsigned long timeout;
|
|
fe_status_t s;
|
|
struct dvb_frontend_parameters *params;
|
|
|
|
dprintk("%s\n", __func__);
|
|
|
|
fepriv->check_wrapped = 0;
|
|
fepriv->quality = 0;
|
|
fepriv->delay = 3*HZ;
|
|
fepriv->status = 0;
|
|
fepriv->wakeup = 0;
|
|
fepriv->reinitialise = 0;
|
|
|
|
dvb_frontend_init(fe);
|
|
|
|
set_freezable();
|
|
while (1) {
|
|
up(&fepriv->sem); /* is locked when we enter the thread... */
|
|
restart:
|
|
timeout = wait_event_interruptible_timeout(fepriv->wait_queue,
|
|
dvb_frontend_should_wakeup(fe) || kthread_should_stop()
|
|
|| freezing(current),
|
|
fepriv->delay);
|
|
|
|
if (kthread_should_stop() || dvb_frontend_is_exiting(fe)) {
|
|
/* got signal or quitting */
|
|
break;
|
|
}
|
|
|
|
if (try_to_freeze())
|
|
goto restart;
|
|
|
|
if (down_interruptible(&fepriv->sem))
|
|
break;
|
|
|
|
if (fepriv->reinitialise) {
|
|
dvb_frontend_init(fe);
|
|
if (fepriv->tone != -1) {
|
|
fe->ops.set_tone(fe, fepriv->tone);
|
|
}
|
|
if (fepriv->voltage != -1) {
|
|
fe->ops.set_voltage(fe, fepriv->voltage);
|
|
}
|
|
fepriv->reinitialise = 0;
|
|
}
|
|
|
|
/* 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;
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
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 (fe->ops.sleep)
|
|
fe->ops.sleep(fe);
|
|
}
|
|
|
|
fepriv->thread = NULL;
|
|
mb();
|
|
|
|
dvb_frontend_wakeup(fe);
|
|
return 0;
|
|
}
|
|
|
|
static void dvb_frontend_stop(struct dvb_frontend *fe)
|
|
{
|
|
struct dvb_frontend_private *fepriv = fe->frontend_priv;
|
|
|
|
dprintk ("%s\n", __func__);
|
|
|
|
fepriv->exit = 1;
|
|
mb();
|
|
|
|
if (!fepriv->thread)
|
|
return;
|
|
|
|
kthread_stop(fepriv->thread);
|
|
|
|
init_MUTEX (&fepriv->sem);
|
|
fepriv->state = FESTATE_IDLE;
|
|
|
|
/* paranoia check in case a signal arrived */
|
|
if (fepriv->thread)
|
|
printk("dvb_frontend_stop: warning: thread %p won't exit\n",
|
|
fepriv->thread);
|
|
}
|
|
|
|
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 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;
|
|
struct task_struct *fe_thread;
|
|
|
|
dprintk ("%s\n", __func__);
|
|
|
|
if (fepriv->thread) {
|
|
if (!fepriv->exit)
|
|
return 0;
|
|
else
|
|
dvb_frontend_stop (fe);
|
|
}
|
|
|
|
if (signal_pending(current))
|
|
return -EINTR;
|
|
if (down_interruptible (&fepriv->sem))
|
|
return -EINTR;
|
|
|
|
fepriv->state = FESTATE_IDLE;
|
|
fepriv->exit = 0;
|
|
fepriv->thread = NULL;
|
|
mb();
|
|
|
|
fe_thread = kthread_run(dvb_frontend_thread, fe,
|
|
"kdvb-fe-%i", fe->dvb->num);
|
|
if (IS_ERR(fe_thread)) {
|
|
ret = PTR_ERR(fe_thread);
|
|
printk("dvb_frontend_start: failed to start kthread (%d)\n", ret);
|
|
up(&fepriv->sem);
|
|
return ret;
|
|
}
|
|
fepriv->thread = fe_thread;
|
|
return 0;
|
|
}
|
|
|
|
static void dvb_frontend_get_frequeny_limits(struct dvb_frontend *fe,
|
|
u32 *freq_min, u32 *freq_max)
|
|
{
|
|
*freq_min = max(fe->ops.info.frequency_min, fe->ops.tuner_ops.info.frequency_min);
|
|
|
|
if (fe->ops.info.frequency_max == 0)
|
|
*freq_max = fe->ops.tuner_ops.info.frequency_max;
|
|
else if (fe->ops.tuner_ops.info.frequency_max == 0)
|
|
*freq_max = fe->ops.info.frequency_max;
|
|
else
|
|
*freq_max = min(fe->ops.info.frequency_max, fe->ops.tuner_ops.info.frequency_max);
|
|
|
|
if (*freq_min == 0 || *freq_max == 0)
|
|
printk(KERN_WARNING "DVB: frontend %u frequency limits undefined - fix the driver\n",
|
|
fe->dvb->num);
|
|
}
|
|
|
|
static int dvb_frontend_check_parameters(struct dvb_frontend *fe,
|
|
struct dvb_frontend_parameters *parms)
|
|
{
|
|
u32 freq_min;
|
|
u32 freq_max;
|
|
|
|
/* range check: frequency */
|
|
dvb_frontend_get_frequeny_limits(fe, &freq_min, &freq_max);
|
|
if ((freq_min && parms->frequency < freq_min) ||
|
|
(freq_max && parms->frequency > freq_max)) {
|
|
printk(KERN_WARNING "DVB: frontend %u frequency %u out of range (%u..%u)\n",
|
|
fe->dvb->num, parms->frequency, freq_min, freq_max);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* range check: symbol rate */
|
|
if (fe->ops.info.type == FE_QPSK) {
|
|
if ((fe->ops.info.symbol_rate_min &&
|
|
parms->u.qpsk.symbol_rate < fe->ops.info.symbol_rate_min) ||
|
|
(fe->ops.info.symbol_rate_max &&
|
|
parms->u.qpsk.symbol_rate > fe->ops.info.symbol_rate_max)) {
|
|
printk(KERN_WARNING "DVB: frontend %u symbol rate %u out of range (%u..%u)\n",
|
|
fe->dvb->num, parms->u.qpsk.symbol_rate,
|
|
fe->ops.info.symbol_rate_min, fe->ops.info.symbol_rate_max);
|
|
return -EINVAL;
|
|
}
|
|
|
|
} else if (fe->ops.info.type == FE_QAM) {
|
|
if ((fe->ops.info.symbol_rate_min &&
|
|
parms->u.qam.symbol_rate < fe->ops.info.symbol_rate_min) ||
|
|
(fe->ops.info.symbol_rate_max &&
|
|
parms->u.qam.symbol_rate > fe->ops.info.symbol_rate_max)) {
|
|
printk(KERN_WARNING "DVB: frontend %u symbol rate %u out of range (%u..%u)\n",
|
|
fe->dvb->num, parms->u.qam.symbol_rate,
|
|
fe->ops.info.symbol_rate_min, fe->ops.info.symbol_rate_max);
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct dtv_cmds_h dtv_cmds[] = {
|
|
[DTV_TUNE] = {
|
|
.name = "DTV_TUNE",
|
|
.cmd = DTV_TUNE,
|
|
.set = 1,
|
|
},
|
|
[DTV_CLEAR] = {
|
|
.name = "DTV_CLEAR",
|
|
.cmd = DTV_CLEAR,
|
|
.set = 1,
|
|
},
|
|
|
|
/* Set */
|
|
[DTV_FREQUENCY] = {
|
|
.name = "DTV_FREQUENCY",
|
|
.cmd = DTV_FREQUENCY,
|
|
.set = 1,
|
|
},
|
|
[DTV_BANDWIDTH_HZ] = {
|
|
.name = "DTV_BANDWIDTH_HZ",
|
|
.cmd = DTV_BANDWIDTH_HZ,
|
|
.set = 1,
|
|
},
|
|
[DTV_MODULATION] = {
|
|
.name = "DTV_MODULATION",
|
|
.cmd = DTV_MODULATION,
|
|
.set = 1,
|
|
},
|
|
[DTV_INVERSION] = {
|
|
.name = "DTV_INVERSION",
|
|
.cmd = DTV_INVERSION,
|
|
.set = 1,
|
|
},
|
|
[DTV_DISEQC_MASTER] = {
|
|
.name = "DTV_DISEQC_MASTER",
|
|
.cmd = DTV_DISEQC_MASTER,
|
|
.set = 1,
|
|
.buffer = 1,
|
|
},
|
|
[DTV_SYMBOL_RATE] = {
|
|
.name = "DTV_SYMBOL_RATE",
|
|
.cmd = DTV_SYMBOL_RATE,
|
|
.set = 1,
|
|
},
|
|
[DTV_INNER_FEC] = {
|
|
.name = "DTV_INNER_FEC",
|
|
.cmd = DTV_INNER_FEC,
|
|
.set = 1,
|
|
},
|
|
[DTV_VOLTAGE] = {
|
|
.name = "DTV_VOLTAGE",
|
|
.cmd = DTV_VOLTAGE,
|
|
.set = 1,
|
|
},
|
|
[DTV_TONE] = {
|
|
.name = "DTV_TONE",
|
|
.cmd = DTV_TONE,
|
|
.set = 1,
|
|
},
|
|
[DTV_PILOT] = {
|
|
.name = "DTV_PILOT",
|
|
.cmd = DTV_PILOT,
|
|
.set = 1,
|
|
},
|
|
[DTV_ROLLOFF] = {
|
|
.name = "DTV_ROLLOFF",
|
|
.cmd = DTV_ROLLOFF,
|
|
.set = 1,
|
|
},
|
|
[DTV_DELIVERY_SYSTEM] = {
|
|
.name = "DTV_DELIVERY_SYSTEM",
|
|
.cmd = DTV_DELIVERY_SYSTEM,
|
|
.set = 1,
|
|
},
|
|
[DTV_CODE_RATE_HP] = {
|
|
.name = "DTV_CODE_RATE_HP",
|
|
.cmd = DTV_CODE_RATE_HP,
|
|
.set = 1,
|
|
},
|
|
[DTV_CODE_RATE_LP] = {
|
|
.name = "DTV_CODE_RATE_LP",
|
|
.cmd = DTV_CODE_RATE_LP,
|
|
.set = 1,
|
|
},
|
|
[DTV_GUARD_INTERVAL] = {
|
|
.name = "DTV_GUARD_INTERVAL",
|
|
.cmd = DTV_GUARD_INTERVAL,
|
|
.set = 1,
|
|
},
|
|
[DTV_TRANSMISSION_MODE] = {
|
|
.name = "DTV_TRANSMISSION_MODE",
|
|
.cmd = DTV_TRANSMISSION_MODE,
|
|
.set = 1,
|
|
},
|
|
/* Get */
|
|
[DTV_DISEQC_SLAVE_REPLY] = {
|
|
.name = "DTV_DISEQC_SLAVE_REPLY",
|
|
.cmd = DTV_DISEQC_SLAVE_REPLY,
|
|
.set = 0,
|
|
.buffer = 1,
|
|
},
|
|
[DTV_API_VERSION] = {
|
|
.name = "DTV_API_VERSION",
|
|
.cmd = DTV_API_VERSION,
|
|
.set = 0,
|
|
},
|
|
[DTV_CODE_RATE_HP] = {
|
|
.name = "DTV_CODE_RATE_HP",
|
|
.cmd = DTV_CODE_RATE_HP,
|
|
.set = 0,
|
|
},
|
|
[DTV_CODE_RATE_LP] = {
|
|
.name = "DTV_CODE_RATE_LP",
|
|
.cmd = DTV_CODE_RATE_LP,
|
|
.set = 0,
|
|
},
|
|
[DTV_GUARD_INTERVAL] = {
|
|
.name = "DTV_GUARD_INTERVAL",
|
|
.cmd = DTV_GUARD_INTERVAL,
|
|
.set = 0,
|
|
},
|
|
[DTV_TRANSMISSION_MODE] = {
|
|
.name = "DTV_TRANSMISSION_MODE",
|
|
.cmd = DTV_TRANSMISSION_MODE,
|
|
.set = 0,
|
|
},
|
|
};
|
|
|
|
void dtv_property_dump(struct dtv_property *tvp)
|
|
{
|
|
int i;
|
|
|
|
if (tvp->cmd <= 0 || tvp->cmd > DTV_MAX_COMMAND) {
|
|
printk("%s: tvp.cmd = 0x%08x (undefined/unknown/invalid)\n",
|
|
__func__, tvp->cmd);
|
|
return;
|
|
}
|
|
|
|
printk("%s() tvp.cmd = 0x%08x (%s)\n"
|
|
,__FUNCTION__
|
|
,tvp->cmd
|
|
,dtv_cmds[ tvp->cmd ].name);
|
|
|
|
if(dtv_cmds[ tvp->cmd ].buffer) {
|
|
|
|
printk("%s() tvp.u.buffer.len = 0x%02x\n"
|
|
,__FUNCTION__
|
|
,tvp->u.buffer.len);
|
|
|
|
for(i = 0; i < tvp->u.buffer.len; i++)
|
|
printk("%s() tvp.u.buffer.data[0x%02x] = 0x%02x\n"
|
|
,__FUNCTION__
|
|
,i
|
|
,tvp->u.buffer.data[i]);
|
|
|
|
} else
|
|
printk("%s() tvp.u.data = 0x%08x\n", __FUNCTION__, tvp->u.data);
|
|
}
|
|
|
|
int is_legacy_delivery_system(fe_delivery_system_t s)
|
|
{
|
|
if((s == SYS_UNDEFINED) || (s == SYS_DVBC_ANNEX_AC) ||
|
|
(s == SYS_DVBC_ANNEX_B) || (s == SYS_DVBT) || (s == SYS_DVBS))
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Synchronise the legacy tuning parameters into the cache, so that demodulator
|
|
* drivers can use a single set_frontend tuning function, regardless of whether
|
|
* it's being used for the legacy or new API, reducing code and complexity.
|
|
*/
|
|
void dtv_property_cache_sync(struct dvb_frontend *fe, struct dvb_frontend_parameters *p)
|
|
{
|
|
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
|
|
|
|
printk("%s()\n", __FUNCTION__);
|
|
|
|
c->frequency = p->frequency;
|
|
c->inversion = p->inversion;
|
|
|
|
switch (fe->ops.info.type) {
|
|
case FE_QPSK:
|
|
c->modulation = QPSK; /* implied for DVB-S in legacy API */
|
|
c->rolloff = ROLLOFF_35;/* implied for DVB-S */
|
|
c->symbol_rate = p->u.qpsk.symbol_rate;
|
|
c->fec_inner = p->u.qpsk.fec_inner;
|
|
c->delivery_system = SYS_DVBS;
|
|
break;
|
|
case FE_QAM:
|
|
c->symbol_rate = p->u.qam.symbol_rate;
|
|
c->fec_inner = p->u.qam.fec_inner;
|
|
c->modulation = p->u.qam.modulation;
|
|
c->delivery_system = SYS_DVBC_ANNEX_AC;
|
|
break;
|
|
case FE_OFDM:
|
|
if (p->u.ofdm.bandwidth == BANDWIDTH_6_MHZ)
|
|
c->bandwidth_hz = 6000000;
|
|
else if (p->u.ofdm.bandwidth == BANDWIDTH_7_MHZ)
|
|
c->bandwidth_hz = 7000000;
|
|
else if (p->u.ofdm.bandwidth == BANDWIDTH_8_MHZ)
|
|
c->bandwidth_hz = 8000000;
|
|
else
|
|
/* Including BANDWIDTH_AUTO */
|
|
c->bandwidth_hz = 0;
|
|
c->code_rate_HP = p->u.ofdm.code_rate_HP;
|
|
c->code_rate_LP = p->u.ofdm.code_rate_LP;
|
|
c->modulation = p->u.ofdm.constellation;
|
|
c->transmission_mode = p->u.ofdm.transmission_mode;
|
|
c->guard_interval = p->u.ofdm.guard_interval;
|
|
c->hierarchy = p->u.ofdm.hierarchy_information;
|
|
c->delivery_system = SYS_DVBT;
|
|
break;
|
|
case FE_ATSC:
|
|
c->modulation = p->u.vsb.modulation;
|
|
if ((c->modulation == VSB_8) || (c->modulation == VSB_16))
|
|
c->delivery_system = SYS_ATSC;
|
|
else
|
|
c->delivery_system = SYS_DVBC_ANNEX_B;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Ensure the cached values are set correctly in the frontend
|
|
* legacy tuning structures, for the advanced tuning API.
|
|
*/
|
|
void dtv_property_legacy_params_sync(struct dvb_frontend *fe)
|
|
{
|
|
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
|
|
struct dvb_frontend_private *fepriv = fe->frontend_priv;
|
|
struct dvb_frontend_parameters *p = &fepriv->parameters;
|
|
|
|
printk("%s()\n", __FUNCTION__);
|
|
|
|
p->frequency = c->frequency;
|
|
p->inversion = c->inversion;
|
|
|
|
switch (fe->ops.info.type) {
|
|
case FE_QPSK:
|
|
printk("%s() Preparing QPSK req\n", __FUNCTION__);
|
|
p->u.qpsk.symbol_rate = c->symbol_rate;
|
|
p->u.qpsk.fec_inner = c->fec_inner;
|
|
c->delivery_system = SYS_DVBS;
|
|
break;
|
|
case FE_QAM:
|
|
printk("%s() Preparing QAM req\n", __FUNCTION__);
|
|
p->u.qam.symbol_rate = c->symbol_rate;
|
|
p->u.qam.fec_inner = c->fec_inner;
|
|
p->u.qam.modulation = c->modulation;
|
|
c->delivery_system = SYS_DVBC_ANNEX_AC;
|
|
break;
|
|
case FE_OFDM:
|
|
printk("%s() Preparing OFDM req\n", __FUNCTION__);
|
|
if (c->bandwidth_hz == 6000000)
|
|
p->u.ofdm.bandwidth = BANDWIDTH_6_MHZ;
|
|
else if (c->bandwidth_hz == 7000000)
|
|
p->u.ofdm.bandwidth = BANDWIDTH_7_MHZ;
|
|
else if (c->bandwidth_hz == 8000000)
|
|
p->u.ofdm.bandwidth = BANDWIDTH_8_MHZ;
|
|
else
|
|
p->u.ofdm.bandwidth = BANDWIDTH_AUTO;
|
|
p->u.ofdm.code_rate_HP = c->code_rate_HP;
|
|
p->u.ofdm.code_rate_LP = c->code_rate_LP;
|
|
p->u.ofdm.constellation = c->modulation;
|
|
p->u.ofdm.transmission_mode = c->transmission_mode;
|
|
p->u.ofdm.guard_interval = c->guard_interval;
|
|
p->u.ofdm.hierarchy_information = c->hierarchy;
|
|
c->delivery_system = SYS_DVBT;
|
|
break;
|
|
case FE_ATSC:
|
|
printk("%s() Preparing VSB req\n", __FUNCTION__);
|
|
p->u.vsb.modulation = c->modulation;
|
|
if ((c->modulation == VSB_8) || (c->modulation == VSB_16))
|
|
c->delivery_system = SYS_ATSC;
|
|
else
|
|
c->delivery_system = SYS_DVBC_ANNEX_B;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Ensure the cached values are set correctly in the frontend
|
|
* legacy tuning structures, for the legacy tuning API.
|
|
*/
|
|
void dtv_property_adv_params_sync(struct dvb_frontend *fe)
|
|
{
|
|
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
|
|
struct dvb_frontend_private *fepriv = fe->frontend_priv;
|
|
struct dvb_frontend_parameters *p = &fepriv->parameters;
|
|
|
|
printk("%s()\n", __FUNCTION__);
|
|
|
|
p->frequency = c->frequency;
|
|
p->inversion = c->inversion;
|
|
|
|
switch(c->modulation) {
|
|
case PSK_8:
|
|
case APSK_16:
|
|
case QPSK:
|
|
p->u.qpsk.symbol_rate = c->symbol_rate;
|
|
p->u.qpsk.fec_inner = c->fec_inner;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if(c->delivery_system == SYS_ISDBT) {
|
|
/* Fake out a generic DVB-T request so we pass validation in the ioctl */
|
|
p->frequency = c->frequency;
|
|
p->inversion = INVERSION_AUTO;
|
|
p->u.ofdm.constellation = QAM_AUTO;
|
|
p->u.ofdm.code_rate_HP = FEC_AUTO;
|
|
p->u.ofdm.code_rate_LP = FEC_AUTO;
|
|
p->u.ofdm.bandwidth = BANDWIDTH_AUTO;
|
|
p->u.ofdm.transmission_mode = TRANSMISSION_MODE_AUTO;
|
|
p->u.ofdm.guard_interval = GUARD_INTERVAL_AUTO;
|
|
p->u.ofdm.hierarchy_information = HIERARCHY_AUTO;
|
|
}
|
|
}
|
|
|
|
void dtv_property_cache_submit(struct dvb_frontend *fe)
|
|
{
|
|
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
|
|
|
|
printk("%s()\n", __FUNCTION__);
|
|
|
|
/* For legacy delivery systems we don't need the delivery_system to
|
|
* be specified, but we populate the older structures from the cache
|
|
* so we can call set_frontend on older drivers.
|
|
*/
|
|
if(is_legacy_delivery_system(c->delivery_system)) {
|
|
|
|
printk("%s() legacy, modulation = %d\n", __FUNCTION__, c->modulation);
|
|
dtv_property_legacy_params_sync(fe);
|
|
|
|
} else {
|
|
printk("%s() adv, modulation = %d\n", __FUNCTION__, c->modulation);
|
|
|
|
/* For advanced delivery systems / modulation types ...
|
|
* we seed the lecacy dvb_frontend_parameters structure
|
|
* so that the sanity checking code later in the IOCTL processing
|
|
* can validate our basic frequency ranges, symbolrates, modulation
|
|
* etc.
|
|
*/
|
|
dtv_property_adv_params_sync(fe);
|
|
}
|
|
}
|
|
|
|
static int dvb_frontend_ioctl_legacy(struct inode *inode, struct file *file,
|
|
unsigned int cmd, void *parg);
|
|
static int dvb_frontend_ioctl_properties(struct inode *inode, struct file *file,
|
|
unsigned int cmd, void *parg);
|
|
|
|
int dtv_property_process_get(struct dvb_frontend *fe, struct dtv_property *tvp,
|
|
struct inode *inode, struct file *file)
|
|
{
|
|
int r = 0;
|
|
|
|
printk("%s()\n", __FUNCTION__);
|
|
|
|
dtv_property_dump(tvp);
|
|
|
|
/* Allow the frontend to validate incoming properties */
|
|
if (fe->ops.get_property)
|
|
r = fe->ops.get_property(fe, tvp);
|
|
|
|
if (r < 0)
|
|
return r;
|
|
|
|
switch(tvp->cmd) {
|
|
case DTV_FREQUENCY:
|
|
tvp->u.data = fe->dtv_property_cache.frequency;
|
|
break;
|
|
case DTV_MODULATION:
|
|
tvp->u.data = fe->dtv_property_cache.modulation;
|
|
break;
|
|
case DTV_BANDWIDTH_HZ:
|
|
tvp->u.data = fe->dtv_property_cache.bandwidth_hz;
|
|
break;
|
|
case DTV_INVERSION:
|
|
tvp->u.data = fe->dtv_property_cache.inversion;
|
|
break;
|
|
case DTV_SYMBOL_RATE:
|
|
tvp->u.data = fe->dtv_property_cache.symbol_rate;
|
|
break;
|
|
case DTV_INNER_FEC:
|
|
tvp->u.data = fe->dtv_property_cache.fec_inner;
|
|
break;
|
|
case DTV_PILOT:
|
|
tvp->u.data = fe->dtv_property_cache.pilot;
|
|
break;
|
|
case DTV_ROLLOFF:
|
|
tvp->u.data = fe->dtv_property_cache.rolloff;
|
|
break;
|
|
case DTV_DELIVERY_SYSTEM:
|
|
tvp->u.data = fe->dtv_property_cache.delivery_system;
|
|
break;
|
|
case DTV_VOLTAGE:
|
|
tvp->u.data = fe->dtv_property_cache.voltage;
|
|
break;
|
|
case DTV_TONE:
|
|
tvp->u.data = fe->dtv_property_cache.sectone;
|
|
break;
|
|
case DTV_API_VERSION:
|
|
tvp->u.data = (DVB_API_VERSION << 8) | DVB_API_VERSION_MINOR;
|
|
break;
|
|
case DTV_CODE_RATE_HP:
|
|
tvp->u.data = fe->dtv_property_cache.code_rate_HP;
|
|
break;
|
|
case DTV_CODE_RATE_LP:
|
|
tvp->u.data = fe->dtv_property_cache.code_rate_LP;
|
|
break;
|
|
case DTV_GUARD_INTERVAL:
|
|
tvp->u.data = fe->dtv_property_cache.guard_interval;
|
|
break;
|
|
case DTV_TRANSMISSION_MODE:
|
|
tvp->u.data = fe->dtv_property_cache.transmission_mode;
|
|
break;
|
|
default:
|
|
r = -1;
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
int dtv_property_process_set(struct dvb_frontend *fe, struct dtv_property *tvp,
|
|
struct inode *inode, struct file *file)
|
|
{
|
|
int r = 0;
|
|
struct dvb_frontend_private *fepriv = fe->frontend_priv;
|
|
printk("%s()\n", __FUNCTION__);
|
|
dtv_property_dump(tvp);
|
|
|
|
/* Allow the frontend to validate incoming properties */
|
|
if (fe->ops.set_property)
|
|
r = fe->ops.set_property(fe, tvp);
|
|
|
|
if (r < 0)
|
|
return r;
|
|
|
|
switch(tvp->cmd) {
|
|
case DTV_CLEAR:
|
|
/* Reset a cache of data specific to the frontend here. This does
|
|
* not effect hardware.
|
|
*/
|
|
printk("%s() Flushing property cache\n", __FUNCTION__);
|
|
memset(&fe->dtv_property_cache, 0, sizeof(struct dtv_frontend_properties));
|
|
fe->dtv_property_cache.state = tvp->cmd;
|
|
fe->dtv_property_cache.delivery_system = SYS_UNDEFINED;
|
|
break;
|
|
case DTV_TUNE:
|
|
/* interpret the cache of data, build either a traditional frontend
|
|
* tunerequest so we can pass validation in the FE_SET_FRONTEND
|
|
* ioctl.
|
|
*/
|
|
fe->dtv_property_cache.state = tvp->cmd;
|
|
printk("%s() Finalised property cache\n", __FUNCTION__);
|
|
dtv_property_cache_submit(fe);
|
|
|
|
r |= dvb_frontend_ioctl_legacy(inode, file, FE_SET_FRONTEND,
|
|
&fepriv->parameters);
|
|
break;
|
|
case DTV_FREQUENCY:
|
|
fe->dtv_property_cache.frequency = tvp->u.data;
|
|
break;
|
|
case DTV_MODULATION:
|
|
fe->dtv_property_cache.modulation = tvp->u.data;
|
|
break;
|
|
case DTV_BANDWIDTH_HZ:
|
|
fe->dtv_property_cache.bandwidth_hz = tvp->u.data;
|
|
break;
|
|
case DTV_INVERSION:
|
|
fe->dtv_property_cache.inversion = tvp->u.data;
|
|
break;
|
|
case DTV_SYMBOL_RATE:
|
|
fe->dtv_property_cache.symbol_rate = tvp->u.data;
|
|
break;
|
|
case DTV_INNER_FEC:
|
|
fe->dtv_property_cache.fec_inner = tvp->u.data;
|
|
break;
|
|
case DTV_PILOT:
|
|
fe->dtv_property_cache.pilot = tvp->u.data;
|
|
break;
|
|
case DTV_ROLLOFF:
|
|
fe->dtv_property_cache.rolloff = tvp->u.data;
|
|
break;
|
|
case DTV_DELIVERY_SYSTEM:
|
|
fe->dtv_property_cache.delivery_system = tvp->u.data;
|
|
break;
|
|
case DTV_VOLTAGE:
|
|
fe->dtv_property_cache.voltage = tvp->u.data;
|
|
r = dvb_frontend_ioctl_legacy(inode, file, FE_SET_VOLTAGE,
|
|
(void *)fe->dtv_property_cache.voltage);
|
|
break;
|
|
case DTV_TONE:
|
|
fe->dtv_property_cache.sectone = tvp->u.data;
|
|
r = dvb_frontend_ioctl_legacy(inode, file, FE_SET_TONE,
|
|
(void *)fe->dtv_property_cache.sectone);
|
|
break;
|
|
case DTV_CODE_RATE_HP:
|
|
fe->dtv_property_cache.code_rate_HP = tvp->u.data;
|
|
break;
|
|
case DTV_CODE_RATE_LP:
|
|
fe->dtv_property_cache.code_rate_LP = tvp->u.data;
|
|
break;
|
|
case DTV_GUARD_INTERVAL:
|
|
fe->dtv_property_cache.guard_interval = tvp->u.data;
|
|
break;
|
|
case DTV_TRANSMISSION_MODE:
|
|
fe->dtv_property_cache.transmission_mode = tvp->u.data;
|
|
break;
|
|
default:
|
|
r = -1;
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
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 *fe = dvbdev->priv;
|
|
struct dvb_frontend_private *fepriv = fe->frontend_priv;
|
|
int err = -EOPNOTSUPP;
|
|
|
|
dprintk ("%s\n", __func__);
|
|
|
|
if (fepriv->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 (&fepriv->sem))
|
|
return -ERESTARTSYS;
|
|
|
|
if ((cmd == FE_SET_PROPERTY) || (cmd == FE_GET_PROPERTY))
|
|
err = dvb_frontend_ioctl_properties(inode, file, cmd, parg);
|
|
else {
|
|
fe->dtv_property_cache.state = DTV_UNDEFINED;
|
|
err = dvb_frontend_ioctl_legacy(inode, file, cmd, parg);
|
|
}
|
|
|
|
up(&fepriv->sem);
|
|
return err;
|
|
}
|
|
|
|
static int dvb_frontend_ioctl_properties(struct inode *inode, struct file *file,
|
|
unsigned int cmd, void *parg)
|
|
{
|
|
struct dvb_device *dvbdev = file->private_data;
|
|
struct dvb_frontend *fe = dvbdev->priv;
|
|
int err = 0;
|
|
|
|
struct dtv_properties *tvps = NULL;
|
|
struct dtv_property *tvp = NULL;
|
|
int i;
|
|
|
|
dprintk("%s\n", __func__);
|
|
|
|
if(cmd == FE_SET_PROPERTY) {
|
|
printk("%s() FE_SET_PROPERTY\n", __FUNCTION__);
|
|
|
|
tvps = (struct dtv_properties __user *)parg;
|
|
|
|
printk("%s() properties.num = %d\n", __FUNCTION__, tvps->num);
|
|
printk("%s() properties.props = %p\n", __FUNCTION__, tvps->props);
|
|
|
|
/* Put an arbitrary limit on the number of messages that can
|
|
* be sent at once */
|
|
if (tvps->num > DTV_IOCTL_MAX_MSGS)
|
|
return -EINVAL;
|
|
|
|
tvp = (struct dtv_property *) kmalloc(tvps->num *
|
|
sizeof(struct dtv_property), GFP_KERNEL);
|
|
if (!tvp) {
|
|
err = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
if (copy_from_user(tvp, tvps->props, tvps->num * sizeof(struct dtv_property))) {
|
|
err = -EFAULT;
|
|
goto out;
|
|
}
|
|
|
|
for (i = 0; i < tvps->num; i++) {
|
|
(tvp + i)->result = dtv_property_process_set(fe, tvp + i, inode, file);
|
|
err |= (tvp + i)->result;
|
|
}
|
|
|
|
if(fe->dtv_property_cache.state == DTV_TUNE) {
|
|
printk("%s() Property cache is full, tuning\n", __FUNCTION__);
|
|
}
|
|
|
|
} else
|
|
if(cmd == FE_GET_PROPERTY) {
|
|
printk("%s() FE_GET_PROPERTY\n", __FUNCTION__);
|
|
|
|
tvps = (struct dtv_properties __user *)parg;
|
|
|
|
printk("%s() properties.num = %d\n", __FUNCTION__, tvps->num);
|
|
printk("%s() properties.props = %p\n", __FUNCTION__, tvps->props);
|
|
|
|
/* Put an arbitrary limit on the number of messages that can
|
|
* be sent at once */
|
|
if (tvps->num > DTV_IOCTL_MAX_MSGS)
|
|
return -EINVAL;
|
|
|
|
tvp = (struct dtv_property *) kmalloc(tvps->num *
|
|
sizeof(struct dtv_property), GFP_KERNEL);
|
|
if (!tvp) {
|
|
err = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
if (copy_from_user(tvp, tvps->props, tvps->num * sizeof(struct dtv_property))) {
|
|
err = -EFAULT;
|
|
goto out;
|
|
}
|
|
|
|
for (i = 0; i < tvps->num; i++) {
|
|
(tvp + i)->result = dtv_property_process_get(fe, tvp + i, inode, file);
|
|
err |= (tvp + i)->result;
|
|
}
|
|
|
|
if (copy_to_user(tvps->props, tvp, tvps->num * sizeof(struct dtv_property))) {
|
|
err = -EFAULT;
|
|
goto out;
|
|
}
|
|
|
|
} else
|
|
err = -EOPNOTSUPP;
|
|
|
|
out:
|
|
kfree(tvp);
|
|
return err;
|
|
}
|
|
|
|
static int dvb_frontend_ioctl_legacy(struct inode *inode, struct file *file,
|
|
unsigned int cmd, void *parg)
|
|
{
|
|
struct dvb_device *dvbdev = file->private_data;
|
|
struct dvb_frontend *fe = dvbdev->priv;
|
|
struct dvb_frontend_private *fepriv = fe->frontend_priv;
|
|
int err = -EOPNOTSUPP;
|
|
|
|
switch (cmd) {
|
|
case FE_GET_INFO: {
|
|
struct dvb_frontend_info* info = parg;
|
|
memcpy(info, &fe->ops.info, sizeof(struct dvb_frontend_info));
|
|
dvb_frontend_get_frequeny_limits(fe, &info->frequency_min, &info->frequency_max);
|
|
|
|
/* 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->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 swcmd = ((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", __func__, swcmd);
|
|
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 ((swcmd & 0x01) != last) {
|
|
/* set voltage to (last ? 13V : 18V) */
|
|
fe->ops.set_voltage(fe, (last) ? SEC_VOLTAGE_13 : SEC_VOLTAGE_18);
|
|
last = (last) ? 0 : 1;
|
|
}
|
|
swcmd = swcmd >> 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",
|
|
__func__, 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: {
|
|
struct dvb_frontend_tune_settings fetunesettings;
|
|
|
|
if(fe->dtv_property_cache.state == DTV_TUNE) {
|
|
if (dvb_frontend_check_parameters(fe, &fepriv->parameters) < 0) {
|
|
err = -EINVAL;
|
|
break;
|
|
}
|
|
} else {
|
|
if (dvb_frontend_check_parameters(fe, parg) < 0) {
|
|
err = -EINVAL;
|
|
break;
|
|
}
|
|
|
|
memcpy (&fepriv->parameters, parg,
|
|
sizeof (struct dvb_frontend_parameters));
|
|
dtv_property_cache_sync(fe, &fepriv->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 */
|
|
if (dvb_force_auto_inversion) {
|
|
fepriv->parameters.inversion = INVERSION_AUTO;
|
|
fetunesettings.parameters.inversion = INVERSION_AUTO;
|
|
}
|
|
if (fe->ops.info.type == FE_OFDM) {
|
|
/* without hierarchical 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 (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->ops.info.type) {
|
|
case FE_QPSK:
|
|
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:
|
|
fepriv->min_delay = HZ/20;
|
|
fepriv->step_size = 0; /* no zigzag */
|
|
fepriv->max_drift = 0;
|
|
break;
|
|
|
|
case FE_OFDM:
|
|
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)
|
|
fepriv->min_delay = (dvb_override_tune_delay * HZ) / 1000;
|
|
|
|
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:
|
|
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;
|
|
|
|
case FE_SET_FRONTEND_TUNE_MODE:
|
|
fepriv->tune_mode_flags = (unsigned long) parg;
|
|
err = 0;
|
|
break;
|
|
};
|
|
|
|
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_private *fepriv = fe->frontend_priv;
|
|
|
|
dprintk ("%s\n", __func__);
|
|
|
|
poll_wait (file, &fepriv->events.wait_queue, wait);
|
|
|
|
if (fepriv->events.eventw != fepriv->events.eventr)
|
|
return (POLLIN | POLLRDNORM | POLLPRI);
|
|
|
|
return 0;
|
|
}
|
|
|
|
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_private *fepriv = fe->frontend_priv;
|
|
int ret;
|
|
|
|
dprintk ("%s\n", __func__);
|
|
|
|
if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl) {
|
|
if ((ret = fe->ops.ts_bus_ctrl(fe, 1)) < 0)
|
|
return ret;
|
|
}
|
|
|
|
if ((ret = dvb_generic_open (inode, file)) < 0)
|
|
goto err1;
|
|
|
|
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)
|
|
goto err2;
|
|
|
|
/* empty event queue */
|
|
fepriv->events.eventr = fepriv->events.eventw = 0;
|
|
}
|
|
|
|
return ret;
|
|
|
|
err2:
|
|
dvb_generic_release(inode, file);
|
|
err1:
|
|
if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl)
|
|
fe->ops.ts_bus_ctrl(fe, 0);
|
|
return ret;
|
|
}
|
|
|
|
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_private *fepriv = fe->frontend_priv;
|
|
int ret;
|
|
|
|
dprintk ("%s\n", __func__);
|
|
|
|
if ((file->f_flags & O_ACCMODE) != O_RDONLY)
|
|
fepriv->release_jiffies = jiffies;
|
|
|
|
ret = dvb_generic_release (inode, file);
|
|
|
|
if (dvbdev->users == -1) {
|
|
if (fepriv->exit == 1) {
|
|
fops_put(file->f_op);
|
|
file->f_op = NULL;
|
|
wake_up(&dvbdev->wait_queue);
|
|
}
|
|
if (fe->ops.ts_bus_ctrl)
|
|
fe->ops.ts_bus_ctrl(fe, 0);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static struct file_operations dvb_frontend_fops = {
|
|
.owner = THIS_MODULE,
|
|
.ioctl = dvb_generic_ioctl,
|
|
.poll = dvb_frontend_poll,
|
|
.open = dvb_frontend_open,
|
|
.release = dvb_frontend_release
|
|
};
|
|
|
|
int dvb_register_frontend(struct dvb_adapter* dvb,
|
|
struct dvb_frontend* fe)
|
|
{
|
|
struct dvb_frontend_private *fepriv;
|
|
static const struct dvb_device dvbdev_template = {
|
|
.users = ~0,
|
|
.writers = 1,
|
|
.readers = (~0)-1,
|
|
.fops = &dvb_frontend_fops,
|
|
.kernel_ioctl = dvb_frontend_ioctl
|
|
};
|
|
|
|
dprintk ("%s\n", __func__);
|
|
|
|
if (mutex_lock_interruptible(&frontend_mutex))
|
|
return -ERESTARTSYS;
|
|
|
|
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;
|
|
|
|
init_MUTEX (&fepriv->sem);
|
|
init_waitqueue_head (&fepriv->wait_queue);
|
|
init_waitqueue_head (&fepriv->events.wait_queue);
|
|
mutex_init(&fepriv->events.mtx);
|
|
fe->dvb = dvb;
|
|
fepriv->inversion = INVERSION_OFF;
|
|
|
|
printk ("DVB: registering frontend %i (%s)...\n",
|
|
fe->dvb->num,
|
|
fe->ops.info.name);
|
|
|
|
dvb_register_device (fe->dvb, &fepriv->dvbdev, &dvbdev_template,
|
|
fe, DVB_DEVICE_FRONTEND);
|
|
|
|
mutex_unlock(&frontend_mutex);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(dvb_register_frontend);
|
|
|
|
int dvb_unregister_frontend(struct dvb_frontend* fe)
|
|
{
|
|
struct dvb_frontend_private *fepriv = fe->frontend_priv;
|
|
dprintk ("%s\n", __func__);
|
|
|
|
mutex_lock(&frontend_mutex);
|
|
dvb_frontend_stop (fe);
|
|
mutex_unlock(&frontend_mutex);
|
|
|
|
if (fepriv->dvbdev->users < -1)
|
|
wait_event(fepriv->dvbdev->wait_queue,
|
|
fepriv->dvbdev->users==-1);
|
|
|
|
mutex_lock(&frontend_mutex);
|
|
dvb_unregister_device (fepriv->dvbdev);
|
|
|
|
/* fe is invalid now */
|
|
kfree(fepriv);
|
|
mutex_unlock(&frontend_mutex);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(dvb_unregister_frontend);
|
|
|
|
#ifdef CONFIG_MEDIA_ATTACH
|
|
void dvb_frontend_detach(struct dvb_frontend* fe)
|
|
{
|
|
void *ptr;
|
|
|
|
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);
|
|
}
|
|
if (fe->ops.analog_ops.release) {
|
|
fe->ops.analog_ops.release(fe);
|
|
symbol_put_addr(fe->ops.analog_ops.release);
|
|
}
|
|
ptr = (void*)fe->ops.release;
|
|
if (ptr) {
|
|
fe->ops.release(fe);
|
|
symbol_put_addr(ptr);
|
|
}
|
|
}
|
|
#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.analog_ops.release)
|
|
fe->ops.analog_ops.release(fe);
|
|
if (fe->ops.release)
|
|
fe->ops.release(fe);
|
|
}
|
|
#endif
|
|
EXPORT_SYMBOL(dvb_frontend_detach);
|