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- /*
- * 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
- */
- /* Enables DVBv3 compatibility bits at the headers */
- #define __DVB_CORE__
- #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/semaphore.h>
- #include <linux/module.h>
- #include <linux/list.h>
- #include <linux/freezer.h>
- #include <linux/jiffies.h>
- #include <linux/kthread.h>
- #include <linux/ktime.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;
- static int dvb_mfe_wait_time = 5;
- 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)");
- module_param(dvb_mfe_wait_time, int, 0644);
- MODULE_PARM_DESC(dvb_mfe_wait_time, "Wait up to <mfe_wait_time> seconds on open() for multi-frontend to become available (default:5 seconds)");
- #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_ERROR 256
- #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)
- /*
- * 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_out;
- 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 wakeup;
- enum fe_status 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;
- enum dvbfe_search algo_status;
- #if defined(CONFIG_MEDIA_CONTROLLER_DVB)
- struct media_pipeline pipe;
- struct media_entity *pipe_start_entity;
- #endif
- };
- static void dvb_frontend_wakeup(struct dvb_frontend *fe);
- static int dtv_get_frontend(struct dvb_frontend *fe,
- struct dvb_frontend_parameters *p_out);
- static int dtv_property_legacy_params_sync(struct dvb_frontend *fe,
- struct dvb_frontend_parameters *p);
- static bool has_get_frontend(struct dvb_frontend *fe)
- {
- return fe->ops.get_frontend != NULL;
- }
- /*
- * Due to DVBv3 API calls, a delivery system should be mapped into one of
- * the 4 DVBv3 delivery systems (FE_QPSK, FE_QAM, FE_OFDM or FE_ATSC),
- * otherwise, a DVBv3 call will fail.
- */
- enum dvbv3_emulation_type {
- DVBV3_UNKNOWN,
- DVBV3_QPSK,
- DVBV3_QAM,
- DVBV3_OFDM,
- DVBV3_ATSC,
- };
- static enum dvbv3_emulation_type dvbv3_type(u32 delivery_system)
- {
- switch (delivery_system) {
- case SYS_DVBC_ANNEX_A:
- case SYS_DVBC_ANNEX_C:
- return DVBV3_QAM;
- case SYS_DVBS:
- case SYS_DVBS2:
- case SYS_TURBO:
- case SYS_ISDBS:
- case SYS_DSS:
- return DVBV3_QPSK;
- case SYS_DVBT:
- case SYS_DVBT2:
- case SYS_ISDBT:
- case SYS_DTMB:
- return DVBV3_OFDM;
- case SYS_ATSC:
- case SYS_ATSCMH:
- case SYS_DVBC_ANNEX_B:
- return DVBV3_ATSC;
- case SYS_UNDEFINED:
- case SYS_ISDBC:
- case SYS_DVBH:
- case SYS_DAB:
- default:
- /*
- * Doesn't know how to emulate those types and/or
- * there's no frontend driver from this type yet
- * with some emulation code, so, we're not sure yet how
- * to handle them, or they're not compatible with a DVBv3 call.
- */
- return DVBV3_UNKNOWN;
- }
- }
- static void dvb_frontend_add_event(struct dvb_frontend *fe,
- enum fe_status status)
- {
- struct dvb_frontend_private *fepriv = fe->frontend_priv;
- struct dvb_fe_events *events = &fepriv->events;
- struct dvb_frontend_event *e;
- int wp;
- dev_dbg(fe->dvb->device, "%s:\n", __func__);
- if ((status & FE_HAS_LOCK) && has_get_frontend(fe))
- dtv_get_frontend(fe, &fepriv->parameters_out);
- mutex_lock(&events->mtx);
- 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];
- e->status = status;
- e->parameters = fepriv->parameters_out;
- events->eventw = wp;
- mutex_unlock(&events->mtx);
- wake_up_interruptible (&events->wait_queue);
- }
- static int dvb_frontend_test_event(struct dvb_frontend_private *fepriv,
- struct dvb_fe_events *events)
- {
- int ret;
- up(&fepriv->sem);
- ret = events->eventw != events->eventr;
- down(&fepriv->sem);
- return ret;
- }
- 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;
- dev_dbg(fe->dvb->device, "%s:\n", __func__);
- if (events->overflow) {
- events->overflow = 0;
- return -EOVERFLOW;
- }
- if (events->eventw == events->eventr) {
- int ret;
- if (flags & O_NONBLOCK)
- return -EWOULDBLOCK;
- ret = wait_event_interruptible(events->wait_queue,
- dvb_frontend_test_event(fepriv, events));
- if (ret < 0)
- return ret;
- }
- mutex_lock(&events->mtx);
- *event = events->events[events->eventr];
- events->eventr = (events->eventr + 1) % MAX_EVENT;
- mutex_unlock(&events->mtx);
- return 0;
- }
- static void dvb_frontend_clear_events(struct dvb_frontend *fe)
- {
- struct dvb_frontend_private *fepriv = fe->frontend_priv;
- struct dvb_fe_events *events = &fepriv->events;
- mutex_lock(&events->mtx);
- events->eventr = events->eventw;
- mutex_unlock(&events->mtx);
- }
- static void dvb_frontend_init(struct dvb_frontend *fe)
- {
- dev_dbg(fe->dvb->device,
- "%s: initialising adapter %i frontend %i (%s)...\n",
- __func__, fe->dvb->num, fe->id, fe->ops.info.name);
- if (fe->ops.init)
- fe->ops.init(fe);
- if (fe->ops.tuner_ops.init) {
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 1);
- 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;
- struct dvb_frontend *fe = fepriv->dvbdev->priv;
- dev_dbg(fe->dvb->device, "%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;
- int fe_set_err = 0;
- struct dvb_frontend_private *fepriv = fe->frontend_priv;
- struct dtv_frontend_properties *c = &fe->dtv_property_cache, tmp;
- int original_inversion = c->inversion;
- u32 original_frequency = c->frequency;
- /* are we using autoinversion? */
- autoinversion = ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) &&
- (c->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;
- }
- dev_dbg(fe->dvb->device, "%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 */
- c->frequency += fepriv->lnb_drift;
- if (autoinversion)
- c->inversion = fepriv->inversion;
- tmp = *c;
- if (fe->ops.set_frontend)
- fe_set_err = fe->ops.set_frontend(fe);
- *c = tmp;
- if (fe_set_err < 0) {
- fepriv->state = FESTATE_ERROR;
- return fe_set_err;
- }
- c->frequency = original_frequency;
- c->inversion = original_inversion;
- fepriv->auto_sub_step++;
- return 0;
- }
- static void dvb_frontend_swzigzag(struct dvb_frontend *fe)
- {
- enum fe_status s = 0;
- int retval = 0;
- struct dvb_frontend_private *fepriv = fe->frontend_priv;
- struct dtv_frontend_properties *c = &fe->dtv_property_cache, tmp;
- /* 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) {
- tmp = *c;
- if (fe->ops.set_frontend)
- retval = fe->ops.set_frontend(fe);
- *c = tmp;
- if (retval < 0)
- fepriv->state = FESTATE_ERROR;
- else
- 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)) &&
- (c->inversion == INVERSION_AUTO)) {
- c->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;
- /* perform a tune */
- retval = dvb_frontend_swzigzag_autotune(fe,
- fepriv->check_wrapped);
- if (retval < 0) {
- return;
- } else if (retval) {
- /* 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 (fe->exit != DVB_FE_NO_EXIT)
- return 1;
- if (fepriv->dvbdev->writers == 1)
- if (time_after_eq(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);
- }
- /**
- * dvb_enable_media_tuner() - tries to enable the DVB tuner
- *
- * @fe: struct dvb_frontend pointer
- *
- * This function ensures that just one media tuner is enabled for a given
- * frontend. It has two different behaviors:
- * - For trivial devices with just one tuner:
- * it just enables the existing tuner->fe link
- * - For devices with more than one tuner:
- * It is up to the driver to implement the logic that will enable one tuner
- * and disable the other ones. However, if more than one tuner is enabled for
- * the same frontend, it will print an error message and return -EINVAL.
- *
- * At return, it will return the error code returned by media_entity_setup_link,
- * or 0 if everything is OK, if no tuner is linked to the frontend or if the
- * mdev is NULL.
- */
- #ifdef CONFIG_MEDIA_CONTROLLER_DVB
- static int dvb_enable_media_tuner(struct dvb_frontend *fe)
- {
- struct dvb_frontend_private *fepriv = fe->frontend_priv;
- struct dvb_adapter *adapter = fe->dvb;
- struct media_device *mdev = adapter->mdev;
- struct media_entity *entity, *source;
- struct media_link *link, *found_link = NULL;
- int i, ret, n_links = 0, active_links = 0;
- fepriv->pipe_start_entity = NULL;
- if (!mdev)
- return 0;
- entity = fepriv->dvbdev->entity;
- fepriv->pipe_start_entity = entity;
- for (i = 0; i < entity->num_links; i++) {
- link = &entity->links[i];
- if (link->sink->entity == entity) {
- found_link = link;
- n_links++;
- if (link->flags & MEDIA_LNK_FL_ENABLED)
- active_links++;
- }
- }
- if (!n_links || active_links == 1 || !found_link)
- return 0;
- /*
- * If a frontend has more than one tuner linked, it is up to the driver
- * to select with one will be the active one, as the frontend core can't
- * guess. If the driver doesn't do that, it is a bug.
- */
- if (n_links > 1 && active_links != 1) {
- dev_err(fe->dvb->device,
- "WARNING: there are %d active links among %d tuners. This is a driver's bug!\n",
- active_links, n_links);
- return -EINVAL;
- }
- source = found_link->source->entity;
- fepriv->pipe_start_entity = source;
- for (i = 0; i < source->num_links; i++) {
- struct media_entity *sink;
- int flags = 0;
- link = &source->links[i];
- sink = link->sink->entity;
- if (sink == entity)
- flags = MEDIA_LNK_FL_ENABLED;
- ret = media_entity_setup_link(link, flags);
- if (ret) {
- dev_err(fe->dvb->device,
- "Couldn't change link %s->%s to %s. Error %d\n",
- source->name, sink->name,
- flags ? "enabled" : "disabled",
- ret);
- return ret;
- } else
- dev_dbg(fe->dvb->device,
- "link %s->%s was %s\n",
- source->name, sink->name,
- flags ? "ENABLED" : "disabled");
- }
- return 0;
- }
- #endif
- static int dvb_frontend_thread(void *data)
- {
- struct dvb_frontend *fe = data;
- struct dvb_frontend_private *fepriv = fe->frontend_priv;
- enum fe_status s;
- enum dvbfe_algo algo;
- #ifdef CONFIG_MEDIA_CONTROLLER_DVB
- int ret;
- #endif
- bool re_tune = false;
- bool semheld = false;
- dev_dbg(fe->dvb->device, "%s:\n", __func__);
- fepriv->check_wrapped = 0;
- fepriv->quality = 0;
- fepriv->delay = 3*HZ;
- fepriv->status = 0;
- fepriv->wakeup = 0;
- fepriv->reinitialise = 0;
- #ifdef CONFIG_MEDIA_CONTROLLER_DVB
- ret = dvb_enable_media_tuner(fe);
- if (ret) {
- /* FIXME: return an error if it fails */
- dev_info(fe->dvb->device,
- "proceeding with FE task\n");
- } else if (fepriv->pipe_start_entity) {
- ret = media_entity_pipeline_start(fepriv->pipe_start_entity,
- &fepriv->pipe);
- if (ret)
- return ret;
- }
- #endif
- dvb_frontend_init(fe);
- set_freezable();
- while (1) {
- up(&fepriv->sem); /* is locked when we enter the thread... */
- restart:
- 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 */
- if (!down_interruptible(&fepriv->sem))
- semheld = true;
- fe->exit = DVB_FE_NORMAL_EXIT;
- break;
- }
- if (try_to_freeze())
- goto restart;
- if (down_interruptible(&fepriv->sem))
- break;
- if (fepriv->reinitialise) {
- dvb_frontend_init(fe);
- if (fe->ops.set_tone && fepriv->tone != -1)
- fe->ops.set_tone(fe, fepriv->tone);
- if (fe->ops.set_voltage && 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) {
- algo = fe->ops.get_frontend_algo(fe);
- switch (algo) {
- case DVBFE_ALGO_HW:
- dev_dbg(fe->dvb->device, "%s: Frontend ALGO = DVBFE_ALGO_HW\n", __func__);
- if (fepriv->state & FESTATE_RETUNE) {
- dev_dbg(fe->dvb->device, "%s: Retune requested, FESTATE_RETUNE\n", __func__);
- re_tune = true;
- fepriv->state = FESTATE_TUNED;
- } else {
- re_tune = false;
- }
- if (fe->ops.tune)
- fe->ops.tune(fe, re_tune, fepriv->tune_mode_flags, &fepriv->delay, &s);
- if (s != fepriv->status && !(fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT)) {
- dev_dbg(fe->dvb->device, "%s: state changed, adding current state\n", __func__);
- dvb_frontend_add_event(fe, s);
- fepriv->status = s;
- }
- break;
- case DVBFE_ALGO_SW:
- dev_dbg(fe->dvb->device, "%s: Frontend ALGO = DVBFE_ALGO_SW\n", __func__);
- dvb_frontend_swzigzag(fe);
- break;
- case DVBFE_ALGO_CUSTOM:
- dev_dbg(fe->dvb->device, "%s: Frontend ALGO = DVBFE_ALGO_CUSTOM, state=%d\n", __func__, fepriv->state);
- if (fepriv->state & FESTATE_RETUNE) {
- dev_dbg(fe->dvb->device, "%s: Retune requested, FESTAT_RETUNE\n", __func__);
- fepriv->state = FESTATE_TUNED;
- }
- /* Case where we are going to search for a carrier
- * User asked us to retune again for some reason, possibly
- * requesting a search with a new set of parameters
- */
- if (fepriv->algo_status & DVBFE_ALGO_SEARCH_AGAIN) {
- if (fe->ops.search) {
- fepriv->algo_status = fe->ops.search(fe);
- /* We did do a search as was requested, the flags are
- * now unset as well and has the flags wrt to search.
- */
- } else {
- fepriv->algo_status &= ~DVBFE_ALGO_SEARCH_AGAIN;
- }
- }
- /* Track the carrier if the search was successful */
- if (fepriv->algo_status != DVBFE_ALGO_SEARCH_SUCCESS) {
- fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN;
- fepriv->delay = HZ / 2;
- }
- dtv_property_legacy_params_sync(fe, &fepriv->parameters_out);
- fe->ops.read_status(fe, &s);
- if (s != fepriv->status) {
- dvb_frontend_add_event(fe, s); /* update event list */
- fepriv->status = s;
- if (!(s & FE_HAS_LOCK)) {
- fepriv->delay = HZ / 10;
- fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN;
- } else {
- fepriv->delay = 60 * HZ;
- }
- }
- break;
- default:
- dev_dbg(fe->dvb->device, "%s: UNDEFINED ALGO !\n", __func__);
- break;
- }
- } else {
- dvb_frontend_swzigzag(fe);
- }
- }
- #ifdef CONFIG_MEDIA_CONTROLLER_DVB
- if (fepriv->pipe_start_entity)
- media_entity_pipeline_stop(fepriv->pipe_start_entity);
- fepriv->pipe_start_entity = NULL;
- #endif
- if (dvb_powerdown_on_sleep) {
- if (fe->ops.set_voltage)
- fe->ops.set_voltage(fe, SEC_VOLTAGE_OFF);
- if (fe->ops.tuner_ops.sleep) {
- if (fe->ops.i2c_gate_ctrl)
- fe->ops.i2c_gate_ctrl(fe, 1);
- 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;
- if (kthread_should_stop())
- fe->exit = DVB_FE_DEVICE_REMOVED;
- else
- fe->exit = DVB_FE_NO_EXIT;
- mb();
- if (semheld)
- up(&fepriv->sem);
- dvb_frontend_wakeup(fe);
- return 0;
- }
- static void dvb_frontend_stop(struct dvb_frontend *fe)
- {
- struct dvb_frontend_private *fepriv = fe->frontend_priv;
- dev_dbg(fe->dvb->device, "%s:\n", __func__);
- if (fe->exit != DVB_FE_DEVICE_REMOVED)
- fe->exit = DVB_FE_NORMAL_EXIT;
- mb();
- if (!fepriv->thread)
- return;
- kthread_stop(fepriv->thread);
- sema_init(&fepriv->sem, 1);
- fepriv->state = FESTATE_IDLE;
- /* paranoia check in case a signal arrived */
- if (fepriv->thread)
- dev_warn(fe->dvb->device,
- "dvb_frontend_stop: warning: thread %p won't exit\n",
- fepriv->thread);
- }
- /*
- * 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(ktime_t *waketime, u32 add_usec)
- {
- s32 delta, newdelta;
- ktime_add_us(*waketime, add_usec);
- delta = ktime_us_delta(ktime_get_real(), *waketime);
- if (delta > 2500) {
- msleep((delta - 1500) / 1000);
- newdelta = ktime_us_delta(ktime_get_real(), *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;
- dev_dbg(fe->dvb->device, "%s:\n", __func__);
- if (fepriv->thread) {
- if (fe->exit == DVB_FE_NO_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;
- fe->exit = DVB_FE_NO_EXIT;
- fepriv->thread = NULL;
- mb();
- fe_thread = kthread_run(dvb_frontend_thread, fe,
- "kdvb-ad-%i-fe-%i", fe->dvb->num,fe->id);
- if (IS_ERR(fe_thread)) {
- ret = PTR_ERR(fe_thread);
- dev_warn(fe->dvb->device,
- "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_frequency_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)
- dev_warn(fe->dvb->device, "DVB: adapter %i frontend %u frequency limits undefined - fix the driver\n",
- fe->dvb->num, fe->id);
- }
- static int dvb_frontend_check_parameters(struct dvb_frontend *fe)
- {
- struct dtv_frontend_properties *c = &fe->dtv_property_cache;
- u32 freq_min;
- u32 freq_max;
- /* range check: frequency */
- dvb_frontend_get_frequency_limits(fe, &freq_min, &freq_max);
- if ((freq_min && c->frequency < freq_min) ||
- (freq_max && c->frequency > freq_max)) {
- dev_warn(fe->dvb->device, "DVB: adapter %i frontend %i frequency %u out of range (%u..%u)\n",
- fe->dvb->num, fe->id, c->frequency,
- freq_min, freq_max);
- return -EINVAL;
- }
- /* range check: symbol rate */
- switch (c->delivery_system) {
- case SYS_DVBS:
- case SYS_DVBS2:
- case SYS_TURBO:
- case SYS_DVBC_ANNEX_A:
- case SYS_DVBC_ANNEX_C:
- if ((fe->ops.info.symbol_rate_min &&
- c->symbol_rate < fe->ops.info.symbol_rate_min) ||
- (fe->ops.info.symbol_rate_max &&
- c->symbol_rate > fe->ops.info.symbol_rate_max)) {
- dev_warn(fe->dvb->device, "DVB: adapter %i frontend %i symbol rate %u out of range (%u..%u)\n",
- fe->dvb->num, fe->id, c->symbol_rate,
- fe->ops.info.symbol_rate_min,
- fe->ops.info.symbol_rate_max);
- return -EINVAL;
- }
- default:
- break;
- }
- return 0;
- }
- static int dvb_frontend_clear_cache(struct dvb_frontend *fe)
- {
- struct dtv_frontend_properties *c = &fe->dtv_property_cache;
- int i;
- u32 delsys;
- delsys = c->delivery_system;
- memset(c, 0, offsetof(struct dtv_frontend_properties, strength));
- c->delivery_system = delsys;
- c->state = DTV_CLEAR;
- dev_dbg(fe->dvb->device, "%s: Clearing cache for delivery system %d\n",
- __func__, c->delivery_system);
- c->transmission_mode = TRANSMISSION_MODE_AUTO;
- c->bandwidth_hz = 0; /* AUTO */
- c->guard_interval = GUARD_INTERVAL_AUTO;
- c->hierarchy = HIERARCHY_AUTO;
- c->symbol_rate = 0;
- c->code_rate_HP = FEC_AUTO;
- c->code_rate_LP = FEC_AUTO;
- c->fec_inner = FEC_AUTO;
- c->rolloff = ROLLOFF_AUTO;
- c->voltage = SEC_VOLTAGE_OFF;
- c->sectone = SEC_TONE_OFF;
- c->pilot = PILOT_AUTO;
- c->isdbt_partial_reception = 0;
- c->isdbt_sb_mode = 0;
- c->isdbt_sb_subchannel = 0;
- c->isdbt_sb_segment_idx = 0;
- c->isdbt_sb_segment_count = 0;
- c->isdbt_layer_enabled = 0;
- for (i = 0; i < 3; i++) {
- c->layer[i].fec = FEC_AUTO;
- c->layer[i].modulation = QAM_AUTO;
- c->layer[i].interleaving = 0;
- c->layer[i].segment_count = 0;
- }
- c->stream_id = NO_STREAM_ID_FILTER;
- switch (c->delivery_system) {
- case SYS_DVBS:
- case SYS_DVBS2:
- case SYS_TURBO:
- c->modulation = QPSK; /* implied for DVB-S in legacy API */
- c->rolloff = ROLLOFF_35;/* implied for DVB-S */
- break;
- case SYS_ATSC:
- c->modulation = VSB_8;
- break;
- case SYS_ISDBS:
- c->symbol_rate = 28860000;
- c->rolloff = ROLLOFF_35;
- c->bandwidth_hz = c->symbol_rate / 100 * 135;
- break;
- default:
- c->modulation = QAM_AUTO;
- break;
- }
- c->lna = LNA_AUTO;
- return 0;
- }
- #define _DTV_CMD(n, s, b) \
- [n] = { \
- .name = #n, \
- .cmd = n, \
- .set = s,\
- .buffer = b \
- }
- static struct dtv_cmds_h dtv_cmds[DTV_MAX_COMMAND + 1] = {
- _DTV_CMD(DTV_TUNE, 1, 0),
- _DTV_CMD(DTV_CLEAR, 1, 0),
- /* Set */
- _DTV_CMD(DTV_FREQUENCY, 1, 0),
- _DTV_CMD(DTV_BANDWIDTH_HZ, 1, 0),
- _DTV_CMD(DTV_MODULATION, 1, 0),
- _DTV_CMD(DTV_INVERSION, 1, 0),
- _DTV_CMD(DTV_DISEQC_MASTER, 1, 1),
- _DTV_CMD(DTV_SYMBOL_RATE, 1, 0),
- _DTV_CMD(DTV_INNER_FEC, 1, 0),
- _DTV_CMD(DTV_VOLTAGE, 1, 0),
- _DTV_CMD(DTV_TONE, 1, 0),
- _DTV_CMD(DTV_PILOT, 1, 0),
- _DTV_CMD(DTV_ROLLOFF, 1, 0),
- _DTV_CMD(DTV_DELIVERY_SYSTEM, 1, 0),
- _DTV_CMD(DTV_HIERARCHY, 1, 0),
- _DTV_CMD(DTV_CODE_RATE_HP, 1, 0),
- _DTV_CMD(DTV_CODE_RATE_LP, 1, 0),
- _DTV_CMD(DTV_GUARD_INTERVAL, 1, 0),
- _DTV_CMD(DTV_TRANSMISSION_MODE, 1, 0),
- _DTV_CMD(DTV_INTERLEAVING, 1, 0),
- _DTV_CMD(DTV_ISDBT_PARTIAL_RECEPTION, 1, 0),
- _DTV_CMD(DTV_ISDBT_SOUND_BROADCASTING, 1, 0),
- _DTV_CMD(DTV_ISDBT_SB_SUBCHANNEL_ID, 1, 0),
- _DTV_CMD(DTV_ISDBT_SB_SEGMENT_IDX, 1, 0),
- _DTV_CMD(DTV_ISDBT_SB_SEGMENT_COUNT, 1, 0),
- _DTV_CMD(DTV_ISDBT_LAYER_ENABLED, 1, 0),
- _DTV_CMD(DTV_ISDBT_LAYERA_FEC, 1, 0),
- _DTV_CMD(DTV_ISDBT_LAYERA_MODULATION, 1, 0),
- _DTV_CMD(DTV_ISDBT_LAYERA_SEGMENT_COUNT, 1, 0),
- _DTV_CMD(DTV_ISDBT_LAYERA_TIME_INTERLEAVING, 1, 0),
- _DTV_CMD(DTV_ISDBT_LAYERB_FEC, 1, 0),
- _DTV_CMD(DTV_ISDBT_LAYERB_MODULATION, 1, 0),
- _DTV_CMD(DTV_ISDBT_LAYERB_SEGMENT_COUNT, 1, 0),
- _DTV_CMD(DTV_ISDBT_LAYERB_TIME_INTERLEAVING, 1, 0),
- _DTV_CMD(DTV_ISDBT_LAYERC_FEC, 1, 0),
- _DTV_CMD(DTV_ISDBT_LAYERC_MODULATION, 1, 0),
- _DTV_CMD(DTV_ISDBT_LAYERC_SEGMENT_COUNT, 1, 0),
- _DTV_CMD(DTV_ISDBT_LAYERC_TIME_INTERLEAVING, 1, 0),
- _DTV_CMD(DTV_STREAM_ID, 1, 0),
- _DTV_CMD(DTV_DVBT2_PLP_ID_LEGACY, 1, 0),
- _DTV_CMD(DTV_LNA, 1, 0),
- /* Get */
- _DTV_CMD(DTV_DISEQC_SLAVE_REPLY, 0, 1),
- _DTV_CMD(DTV_API_VERSION, 0, 0),
- _DTV_CMD(DTV_ENUM_DELSYS, 0, 0),
- _DTV_CMD(DTV_ATSCMH_PARADE_ID, 1, 0),
- _DTV_CMD(DTV_ATSCMH_RS_FRAME_ENSEMBLE, 1, 0),
- _DTV_CMD(DTV_ATSCMH_FIC_VER, 0, 0),
- _DTV_CMD(DTV_ATSCMH_NOG, 0, 0),
- _DTV_CMD(DTV_ATSCMH_TNOG, 0, 0),
- _DTV_CMD(DTV_ATSCMH_SGN, 0, 0),
- _DTV_CMD(DTV_ATSCMH_PRC, 0, 0),
- _DTV_CMD(DTV_ATSCMH_RS_FRAME_MODE, 0, 0),
- _DTV_CMD(DTV_ATSCMH_RS_CODE_MODE_PRI, 0, 0),
- _DTV_CMD(DTV_ATSCMH_RS_CODE_MODE_SEC, 0, 0),
- _DTV_CMD(DTV_ATSCMH_SCCC_BLOCK_MODE, 0, 0),
- _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_A, 0, 0),
- _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_B, 0, 0),
- _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_C, 0, 0),
- _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_D, 0, 0),
- /* Statistics API */
- _DTV_CMD(DTV_STAT_SIGNAL_STRENGTH, 0, 0),
- _DTV_CMD(DTV_STAT_CNR, 0, 0),
- _DTV_CMD(DTV_STAT_PRE_ERROR_BIT_COUNT, 0, 0),
- _DTV_CMD(DTV_STAT_PRE_TOTAL_BIT_COUNT, 0, 0),
- _DTV_CMD(DTV_STAT_POST_ERROR_BIT_COUNT, 0, 0),
- _DTV_CMD(DTV_STAT_POST_TOTAL_BIT_COUNT, 0, 0),
- _DTV_CMD(DTV_STAT_ERROR_BLOCK_COUNT, 0, 0),
- _DTV_CMD(DTV_STAT_TOTAL_BLOCK_COUNT, 0, 0),
- };
- static void dtv_property_dump(struct dvb_frontend *fe, struct dtv_property *tvp)
- {
- int i;
- if (tvp->cmd <= 0 || tvp->cmd > DTV_MAX_COMMAND) {
- dev_warn(fe->dvb->device, "%s: tvp.cmd = 0x%08x undefined\n",
- __func__, tvp->cmd);
- return;
- }
- dev_dbg(fe->dvb->device, "%s: tvp.cmd = 0x%08x (%s)\n", __func__,
- tvp->cmd, dtv_cmds[tvp->cmd].name);
- if (dtv_cmds[tvp->cmd].buffer) {
- dev_dbg(fe->dvb->device, "%s: tvp.u.buffer.len = 0x%02x\n",
- __func__, tvp->u.buffer.len);
- for(i = 0; i < tvp->u.buffer.len; i++)
- dev_dbg(fe->dvb->device,
- "%s: tvp.u.buffer.data[0x%02x] = 0x%02x\n",
- __func__, i, tvp->u.buffer.data[i]);
- } else {
- dev_dbg(fe->dvb->device, "%s: tvp.u.data = 0x%08x\n", __func__,
- tvp->u.data);
- }
- }
- /* 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.
- */
- static int dtv_property_cache_sync(struct dvb_frontend *fe,
- struct dtv_frontend_properties *c,
- const struct dvb_frontend_parameters *p)
- {
- c->frequency = p->frequency;
- c->inversion = p->inversion;
- switch (dvbv3_type(c->delivery_system)) {
- case DVBV3_QPSK:
- dev_dbg(fe->dvb->device, "%s: Preparing QPSK req\n", __func__);
- c->symbol_rate = p->u.qpsk.symbol_rate;
- c->fec_inner = p->u.qpsk.fec_inner;
- break;
- case DVBV3_QAM:
- dev_dbg(fe->dvb->device, "%s: Preparing QAM req\n", __func__);
- c->symbol_rate = p->u.qam.symbol_rate;
- c->fec_inner = p->u.qam.fec_inner;
- c->modulation = p->u.qam.modulation;
- break;
- case DVBV3_OFDM:
- dev_dbg(fe->dvb->device, "%s: Preparing OFDM req\n", __func__);
- switch (p->u.ofdm.bandwidth) {
- case BANDWIDTH_10_MHZ:
- c->bandwidth_hz = 10000000;
- break;
- case BANDWIDTH_8_MHZ:
- c->bandwidth_hz = 8000000;
- break;
- case BANDWIDTH_7_MHZ:
- c->bandwidth_hz = 7000000;
- break;
- case BANDWIDTH_6_MHZ:
- c->bandwidth_hz = 6000000;
- break;
- case BANDWIDTH_5_MHZ:
- c->bandwidth_hz = 5000000;
- break;
- case BANDWIDTH_1_712_MHZ:
- c->bandwidth_hz = 1712000;
- break;
- case 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;
- break;
- case DVBV3_ATSC:
- dev_dbg(fe->dvb->device, "%s: Preparing ATSC req\n", __func__);
- c->modulation = p->u.vsb.modulation;
- if (c->delivery_system == SYS_ATSCMH)
- break;
- if ((c->modulation == VSB_8) || (c->modulation == VSB_16))
- c->delivery_system = SYS_ATSC;
- else
- c->delivery_system = SYS_DVBC_ANNEX_B;
- break;
- case DVBV3_UNKNOWN:
- dev_err(fe->dvb->device,
- "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
- __func__, c->delivery_system);
- return -EINVAL;
- }
- return 0;
- }
- /* Ensure the cached values are set correctly in the frontend
- * legacy tuning structures, for the advanced tuning API.
- */
- static int dtv_property_legacy_params_sync(struct dvb_frontend *fe,
- struct dvb_frontend_parameters *p)
- {
- const struct dtv_frontend_properties *c = &fe->dtv_property_cache;
- p->frequency = c->frequency;
- p->inversion = c->inversion;
- switch (dvbv3_type(c->delivery_system)) {
- case DVBV3_UNKNOWN:
- dev_err(fe->dvb->device,
- "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
- __func__, c->delivery_system);
- return -EINVAL;
- case DVBV3_QPSK:
- dev_dbg(fe->dvb->device, "%s: Preparing QPSK req\n", __func__);
- p->u.qpsk.symbol_rate = c->symbol_rate;
- p->u.qpsk.fec_inner = c->fec_inner;
- break;
- case DVBV3_QAM:
- dev_dbg(fe->dvb->device, "%s: Preparing QAM req\n", __func__);
- p->u.qam.symbol_rate = c->symbol_rate;
- p->u.qam.fec_inner = c->fec_inner;
- p->u.qam.modulation = c->modulation;
- break;
- case DVBV3_OFDM:
- dev_dbg(fe->dvb->device, "%s: Preparing OFDM req\n", __func__);
- switch (c->bandwidth_hz) {
- case 10000000:
- p->u.ofdm.bandwidth = BANDWIDTH_10_MHZ;
- break;
- case 8000000:
- p->u.ofdm.bandwidth = BANDWIDTH_8_MHZ;
- break;
- case 7000000:
- p->u.ofdm.bandwidth = BANDWIDTH_7_MHZ;
- break;
- case 6000000:
- p->u.ofdm.bandwidth = BANDWIDTH_6_MHZ;
- break;
- case 5000000:
- p->u.ofdm.bandwidth = BANDWIDTH_5_MHZ;
- break;
- case 1712000:
- p->u.ofdm.bandwidth = BANDWIDTH_1_712_MHZ;
- break;
- case 0:
- default:
- 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;
- break;
- case DVBV3_ATSC:
- dev_dbg(fe->dvb->device, "%s: Preparing VSB req\n", __func__);
- p->u.vsb.modulation = c->modulation;
- break;
- }
- return 0;
- }
- /**
- * dtv_get_frontend - calls a callback for retrieving DTV parameters
- * @fe: struct dvb_frontend pointer
- * @c: struct dtv_frontend_properties pointer (DVBv5 cache)
- * @p_out struct dvb_frontend_parameters pointer (DVBv3 FE struct)
- *
- * This routine calls either the DVBv3 or DVBv5 get_frontend call.
- * If c is not null, it will update the DVBv5 cache struct pointed by it.
- * If p_out is not null, it will update the DVBv3 params pointed by it.
- */
- static int dtv_get_frontend(struct dvb_frontend *fe,
- struct dvb_frontend_parameters *p_out)
- {
- int r;
- if (fe->ops.get_frontend) {
- r = fe->ops.get_frontend(fe);
- if (unlikely(r < 0))
- return r;
- if (p_out)
- dtv_property_legacy_params_sync(fe, p_out);
- return 0;
- }
- /* As everything is in cache, get_frontend fops are always supported */
- return 0;
- }
- static int dvb_frontend_ioctl_legacy(struct file *file,
- unsigned int cmd, void *parg);
- static int dvb_frontend_ioctl_properties(struct file *file,
- unsigned int cmd, void *parg);
- static int dtv_property_process_get(struct dvb_frontend *fe,
- const struct dtv_frontend_properties *c,
- struct dtv_property *tvp,
- struct file *file)
- {
- int r, ncaps;
- switch(tvp->cmd) {
- case DTV_ENUM_DELSYS:
- ncaps = 0;
- while (ncaps < MAX_DELSYS && fe->ops.delsys[ncaps]) {
- tvp->u.buffer.data[ncaps] = fe->ops.delsys[ncaps];
- ncaps++;
- }
- tvp->u.buffer.len = ncaps;
- break;
- case DTV_FREQUENCY:
- tvp->u.data = c->frequency;
- break;
- case DTV_MODULATION:
- tvp->u.data = c->modulation;
- break;
- case DTV_BANDWIDTH_HZ:
- tvp->u.data = c->bandwidth_hz;
- break;
- case DTV_INVERSION:
- tvp->u.data = c->inversion;
- break;
- case DTV_SYMBOL_RATE:
- tvp->u.data = c->symbol_rate;
- break;
- case DTV_INNER_FEC:
- tvp->u.data = c->fec_inner;
- break;
- case DTV_PILOT:
- tvp->u.data = c->pilot;
- break;
- case DTV_ROLLOFF:
- tvp->u.data = c->rolloff;
- break;
- case DTV_DELIVERY_SYSTEM:
- tvp->u.data = c->delivery_system;
- break;
- case DTV_VOLTAGE:
- tvp->u.data = c->voltage;
- break;
- case DTV_TONE:
- tvp->u.data = c->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 = c->code_rate_HP;
- break;
- case DTV_CODE_RATE_LP:
- tvp->u.data = c->code_rate_LP;
- break;
- case DTV_GUARD_INTERVAL:
- tvp->u.data = c->guard_interval;
- break;
- case DTV_TRANSMISSION_MODE:
- tvp->u.data = c->transmission_mode;
- break;
- case DTV_HIERARCHY:
- tvp->u.data = c->hierarchy;
- break;
- case DTV_INTERLEAVING:
- tvp->u.data = c->interleaving;
- break;
- /* ISDB-T Support here */
- case DTV_ISDBT_PARTIAL_RECEPTION:
- tvp->u.data = c->isdbt_partial_reception;
- break;
- case DTV_ISDBT_SOUND_BROADCASTING:
- tvp->u.data = c->isdbt_sb_mode;
- break;
- case DTV_ISDBT_SB_SUBCHANNEL_ID:
- tvp->u.data = c->isdbt_sb_subchannel;
- break;
- case DTV_ISDBT_SB_SEGMENT_IDX:
- tvp->u.data = c->isdbt_sb_segment_idx;
- break;
- case DTV_ISDBT_SB_SEGMENT_COUNT:
- tvp->u.data = c->isdbt_sb_segment_count;
- break;
- case DTV_ISDBT_LAYER_ENABLED:
- tvp->u.data = c->isdbt_layer_enabled;
- break;
- case DTV_ISDBT_LAYERA_FEC:
- tvp->u.data = c->layer[0].fec;
- break;
- case DTV_ISDBT_LAYERA_MODULATION:
- tvp->u.data = c->layer[0].modulation;
- break;
- case DTV_ISDBT_LAYERA_SEGMENT_COUNT:
- tvp->u.data = c->layer[0].segment_count;
- break;
- case DTV_ISDBT_LAYERA_TIME_INTERLEAVING:
- tvp->u.data = c->layer[0].interleaving;
- break;
- case DTV_ISDBT_LAYERB_FEC:
- tvp->u.data = c->layer[1].fec;
- break;
- case DTV_ISDBT_LAYERB_MODULATION:
- tvp->u.data = c->layer[1].modulation;
- break;
- case DTV_ISDBT_LAYERB_SEGMENT_COUNT:
- tvp->u.data = c->layer[1].segment_count;
- break;
- case DTV_ISDBT_LAYERB_TIME_INTERLEAVING:
- tvp->u.data = c->layer[1].interleaving;
- break;
- case DTV_ISDBT_LAYERC_FEC:
- tvp->u.data = c->layer[2].fec;
- break;
- case DTV_ISDBT_LAYERC_MODULATION:
- tvp->u.data = c->layer[2].modulation;
- break;
- case DTV_ISDBT_LAYERC_SEGMENT_COUNT:
- tvp->u.data = c->layer[2].segment_count;
- break;
- case DTV_ISDBT_LAYERC_TIME_INTERLEAVING:
- tvp->u.data = c->layer[2].interleaving;
- break;
- /* Multistream support */
- case DTV_STREAM_ID:
- case DTV_DVBT2_PLP_ID_LEGACY:
- tvp->u.data = c->stream_id;
- break;
- /* ATSC-MH */
- case DTV_ATSCMH_FIC_VER:
- tvp->u.data = fe->dtv_property_cache.atscmh_fic_ver;
- break;
- case DTV_ATSCMH_PARADE_ID:
- tvp->u.data = fe->dtv_property_cache.atscmh_parade_id;
- break;
- case DTV_ATSCMH_NOG:
- tvp->u.data = fe->dtv_property_cache.atscmh_nog;
- break;
- case DTV_ATSCMH_TNOG:
- tvp->u.data = fe->dtv_property_cache.atscmh_tnog;
- break;
- case DTV_ATSCMH_SGN:
- tvp->u.data = fe->dtv_property_cache.atscmh_sgn;
- break;
- case DTV_ATSCMH_PRC:
- tvp->u.data = fe->dtv_property_cache.atscmh_prc;
- break;
- case DTV_ATSCMH_RS_FRAME_MODE:
- tvp->u.data = fe->dtv_property_cache.atscmh_rs_frame_mode;
- break;
- case DTV_ATSCMH_RS_FRAME_ENSEMBLE:
- tvp->u.data = fe->dtv_property_cache.atscmh_rs_frame_ensemble;
- break;
- case DTV_ATSCMH_RS_CODE_MODE_PRI:
- tvp->u.data = fe->dtv_property_cache.atscmh_rs_code_mode_pri;
- break;
- case DTV_ATSCMH_RS_CODE_MODE_SEC:
- tvp->u.data = fe->dtv_property_cache.atscmh_rs_code_mode_sec;
- break;
- case DTV_ATSCMH_SCCC_BLOCK_MODE:
- tvp->u.data = fe->dtv_property_cache.atscmh_sccc_block_mode;
- break;
- case DTV_ATSCMH_SCCC_CODE_MODE_A:
- tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_a;
- break;
- case DTV_ATSCMH_SCCC_CODE_MODE_B:
- tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_b;
- break;
- case DTV_ATSCMH_SCCC_CODE_MODE_C:
- tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_c;
- break;
- case DTV_ATSCMH_SCCC_CODE_MODE_D:
- tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_d;
- break;
- case DTV_LNA:
- tvp->u.data = c->lna;
- break;
- /* Fill quality measures */
- case DTV_STAT_SIGNAL_STRENGTH:
- tvp->u.st = c->strength;
- break;
- case DTV_STAT_CNR:
- tvp->u.st = c->cnr;
- break;
- case DTV_STAT_PRE_ERROR_BIT_COUNT:
- tvp->u.st = c->pre_bit_error;
- break;
- case DTV_STAT_PRE_TOTAL_BIT_COUNT:
- tvp->u.st = c->pre_bit_count;
- break;
- case DTV_STAT_POST_ERROR_BIT_COUNT:
- tvp->u.st = c->post_bit_error;
- break;
- case DTV_STAT_POST_TOTAL_BIT_COUNT:
- tvp->u.st = c->post_bit_count;
- break;
- case DTV_STAT_ERROR_BLOCK_COUNT:
- tvp->u.st = c->block_error;
- break;
- case DTV_STAT_TOTAL_BLOCK_COUNT:
- tvp->u.st = c->block_count;
- break;
- default:
- dev_dbg(fe->dvb->device,
- "%s: FE property %d doesn't exist\n",
- __func__, tvp->cmd);
- return -EINVAL;
- }
- /* Allow the frontend to override outgoing properties */
- if (fe->ops.get_property) {
- r = fe->ops.get_property(fe, tvp);
- if (r < 0)
- return r;
- }
- dtv_property_dump(fe, tvp);
- return 0;
- }
- static int dtv_set_frontend(struct dvb_frontend *fe);
- static bool is_dvbv3_delsys(u32 delsys)
- {
- bool status;
- status = (delsys == SYS_DVBT) || (delsys == SYS_DVBC_ANNEX_A) ||
- (delsys == SYS_DVBS) || (delsys == SYS_ATSC);
- return status;
- }
- /**
- * emulate_delivery_system - emulate a DVBv5 delivery system with a DVBv3 type
- * @fe: struct frontend;
- * @delsys: DVBv5 type that will be used for emulation
- *
- * Provides emulation for delivery systems that are compatible with the old
- * DVBv3 call. Among its usages, it provices support for ISDB-T, and allows
- * using a DVB-S2 only frontend just like it were a DVB-S, if the frontent
- * parameters are compatible with DVB-S spec.
- */
- static int emulate_delivery_system(struct dvb_frontend *fe, u32 delsys)
- {
- int i;
- struct dtv_frontend_properties *c = &fe->dtv_property_cache;
- c->delivery_system = delsys;
- /*
- * If the call is for ISDB-T, put it into full-seg, auto mode, TV
- */
- if (c->delivery_system == SYS_ISDBT) {
- dev_dbg(fe->dvb->device,
- "%s: Using defaults for SYS_ISDBT\n",
- __func__);
- if (!c->bandwidth_hz)
- c->bandwidth_hz = 6000000;
- c->isdbt_partial_reception = 0;
- c->isdbt_sb_mode = 0;
- c->isdbt_sb_subchannel = 0;
- c->isdbt_sb_segment_idx = 0;
- c->isdbt_sb_segment_count = 0;
- c->isdbt_layer_enabled = 7;
- for (i = 0; i < 3; i++) {
- c->layer[i].fec = FEC_AUTO;
- c->layer[i].modulation = QAM_AUTO;
- c->layer[i].interleaving = 0;
- c->layer[i].segment_count = 0;
- }
- }
- dev_dbg(fe->dvb->device, "%s: change delivery system on cache to %d\n",
- __func__, c->delivery_system);
- return 0;
- }
- /**
- * dvbv5_set_delivery_system - Sets the delivery system for a DVBv5 API call
- * @fe: frontend struct
- * @desired_system: delivery system requested by the user
- *
- * A DVBv5 call know what's the desired system it wants. So, set it.
- *
- * There are, however, a few known issues with early DVBv5 applications that
- * are also handled by this logic:
- *
- * 1) Some early apps use SYS_UNDEFINED as the desired delivery system.
- * This is an API violation, but, as we don't want to break userspace,
- * convert it to the first supported delivery system.
- * 2) Some apps might be using a DVBv5 call in a wrong way, passing, for
- * example, SYS_DVBT instead of SYS_ISDBT. This is because early usage of
- * ISDB-T provided backward compat with DVB-T.
- */
- static int dvbv5_set_delivery_system(struct dvb_frontend *fe,
- u32 desired_system)
- {
- int ncaps;
- u32 delsys = SYS_UNDEFINED;
- struct dtv_frontend_properties *c = &fe->dtv_property_cache;
- enum dvbv3_emulation_type type;
- /*
- * It was reported that some old DVBv5 applications were
- * filling delivery_system with SYS_UNDEFINED. If this happens,
- * assume that the application wants to use the first supported
- * delivery system.
- */
- if (desired_system == SYS_UNDEFINED)
- desired_system = fe->ops.delsys[0];
- /*
- * This is a DVBv5 call. So, it likely knows the supported
- * delivery systems. So, check if the desired delivery system is
- * supported
- */
- ncaps = 0;
- while (ncaps < MAX_DELSYS && fe->ops.delsys[ncaps]) {
- if (fe->ops.delsys[ncaps] == desired_system) {
- c->delivery_system = desired_system;
- dev_dbg(fe->dvb->device,
- "%s: Changing delivery system to %d\n",
- __func__, desired_system);
- return 0;
- }
- ncaps++;
- }
- /*
- * The requested delivery system isn't supported. Maybe userspace
- * is requesting a DVBv3 compatible delivery system.
- *
- * The emulation only works if the desired system is one of the
- * delivery systems supported by DVBv3 API
- */
- if (!is_dvbv3_delsys(desired_system)) {
- dev_dbg(fe->dvb->device,
- "%s: Delivery system %d not supported.\n",
- __func__, desired_system);
- return -EINVAL;
- }
- type = dvbv3_type(desired_system);
- /*
- * Get the last non-DVBv3 delivery system that has the same type
- * of the desired system
- */
- ncaps = 0;
- while (ncaps < MAX_DELSYS && fe->ops.delsys[ncaps]) {
- if (dvbv3_type(fe->ops.delsys[ncaps]) == type)
- delsys = fe->ops.delsys[ncaps];
- ncaps++;
- }
- /* There's nothing compatible with the desired delivery system */
- if (delsys == SYS_UNDEFINED) {
- dev_dbg(fe->dvb->device,
- "%s: Delivery system %d not supported on emulation mode.\n",
- __func__, desired_system);
- return -EINVAL;
- }
- dev_dbg(fe->dvb->device,
- "%s: Using delivery system %d emulated as if it were %d\n",
- __func__, delsys, desired_system);
- return emulate_delivery_system(fe, desired_system);
- }
- /**
- * dvbv3_set_delivery_system - Sets the delivery system for a DVBv3 API call
- * @fe: frontend struct
- *
- * A DVBv3 call doesn't know what's the desired system it wants. It also
- * doesn't allow to switch between different types. Due to that, userspace
- * should use DVBv5 instead.
- * However, in order to avoid breaking userspace API, limited backward
- * compatibility support is provided.
- *
- * There are some delivery systems that are incompatible with DVBv3 calls.
- *
- * This routine should work fine for frontends that support just one delivery
- * system.
- *
- * For frontends that support multiple frontends:
- * 1) It defaults to use the first supported delivery system. There's an
- * userspace application that allows changing it at runtime;
- *
- * 2) If the current delivery system is not compatible with DVBv3, it gets
- * the first one that it is compatible.
- *
- * NOTE: in order for this to work with applications like Kaffeine that
- * uses a DVBv5 call for DVB-S2 and a DVBv3 call to go back to
- * DVB-S, drivers that support both DVB-S and DVB-S2 should have the
- * SYS_DVBS entry before the SYS_DVBS2, otherwise it won't switch back
- * to DVB-S.
- */
- static int dvbv3_set_delivery_system(struct dvb_frontend *fe)
- {
- int ncaps;
- u32 delsys = SYS_UNDEFINED;
- struct dtv_frontend_properties *c = &fe->dtv_property_cache;
- /* If not set yet, defaults to the first supported delivery system */
- if (c->delivery_system == SYS_UNDEFINED)
- c->delivery_system = fe->ops.delsys[0];
- /*
- * Trivial case: just use the current one, if it already a DVBv3
- * delivery system
- */
- if (is_dvbv3_delsys(c->delivery_system)) {
- dev_dbg(fe->dvb->device,
- "%s: Using delivery system to %d\n",
- __func__, c->delivery_system);
- return 0;
- }
- /*
- * Seek for the first delivery system that it is compatible with a
- * DVBv3 standard
- */
- ncaps = 0;
- while (ncaps < MAX_DELSYS && fe->ops.delsys[ncaps]) {
- if (dvbv3_type(fe->ops.delsys[ncaps]) != DVBV3_UNKNOWN) {
- delsys = fe->ops.delsys[ncaps];
- break;
- }
- ncaps++;
- }
- if (delsys == SYS_UNDEFINED) {
- dev_dbg(fe->dvb->device,
- "%s: Couldn't find a delivery system that works with FE_SET_FRONTEND\n",
- __func__);
- return -EINVAL;
- }
- return emulate_delivery_system(fe, delsys);
- }
- static int dtv_property_process_set(struct dvb_frontend *fe,
- struct dtv_property *tvp,
- struct file *file)
- {
- int r = 0;
- struct dtv_frontend_properties *c = &fe->dtv_property_cache;
- /* 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.
- */
- dvb_frontend_clear_cache(fe);
- 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.
- */
- c->state = tvp->cmd;
- dev_dbg(fe->dvb->device, "%s: Finalised property cache\n",
- __func__);
- r = dtv_set_frontend(fe);
- break;
- case DTV_FREQUENCY:
- c->frequency = tvp->u.data;
- break;
- case DTV_MODULATION:
- c->modulation = tvp->u.data;
- break;
- case DTV_BANDWIDTH_HZ:
- c->bandwidth_hz = tvp->u.data;
- break;
- case DTV_INVERSION:
- c->inversion = tvp->u.data;
- break;
- case DTV_SYMBOL_RATE:
- c->symbol_rate = tvp->u.data;
- break;
- case DTV_INNER_FEC:
- c->fec_inner = tvp->u.data;
- break;
- case DTV_PILOT:
- c->pilot = tvp->u.data;
- break;
- case DTV_ROLLOFF:
- c->rolloff = tvp->u.data;
- break;
- case DTV_DELIVERY_SYSTEM:
- r = dvbv5_set_delivery_system(fe, tvp->u.data);
- break;
- case DTV_VOLTAGE:
- c->voltage = tvp->u.data;
- r = dvb_frontend_ioctl_legacy(file, FE_SET_VOLTAGE,
- (void *)c->voltage);
- break;
- case DTV_TONE:
- c->sectone = tvp->u.data;
- r = dvb_frontend_ioctl_legacy(file, FE_SET_TONE,
- (void *)c->sectone);
- break;
- case DTV_CODE_RATE_HP:
- c->code_rate_HP = tvp->u.data;
- break;
- case DTV_CODE_RATE_LP:
- c->code_rate_LP = tvp->u.data;
- break;
- case DTV_GUARD_INTERVAL:
- c->guard_interval = tvp->u.data;
- break;
- case DTV_TRANSMISSION_MODE:
- c->transmission_mode = tvp->u.data;
- break;
- case DTV_HIERARCHY:
- c->hierarchy = tvp->u.data;
- break;
- case DTV_INTERLEAVING:
- c->interleaving = tvp->u.data;
- break;
- /* ISDB-T Support here */
- case DTV_ISDBT_PARTIAL_RECEPTION:
- c->isdbt_partial_reception = tvp->u.data;
- break;
- case DTV_ISDBT_SOUND_BROADCASTING:
- c->isdbt_sb_mode = tvp->u.data;
- break;
- case DTV_ISDBT_SB_SUBCHANNEL_ID:
- c->isdbt_sb_subchannel = tvp->u.data;
- break;
- case DTV_ISDBT_SB_SEGMENT_IDX:
- c->isdbt_sb_segment_idx = tvp->u.data;
- break;
- case DTV_ISDBT_SB_SEGMENT_COUNT:
- c->isdbt_sb_segment_count = tvp->u.data;
- break;
- case DTV_ISDBT_LAYER_ENABLED:
- c->isdbt_layer_enabled = tvp->u.data;
- break;
- case DTV_ISDBT_LAYERA_FEC:
- c->layer[0].fec = tvp->u.data;
- break;
- case DTV_ISDBT_LAYERA_MODULATION:
- c->layer[0].modulation = tvp->u.data;
- break;
- case DTV_ISDBT_LAYERA_SEGMENT_COUNT:
- c->layer[0].segment_count = tvp->u.data;
- break;
- case DTV_ISDBT_LAYERA_TIME_INTERLEAVING:
- c->layer[0].interleaving = tvp->u.data;
- break;
- case DTV_ISDBT_LAYERB_FEC:
- c->layer[1].fec = tvp->u.data;
- break;
- case DTV_ISDBT_LAYERB_MODULATION:
- c->layer[1].modulation = tvp->u.data;
- break;
- case DTV_ISDBT_LAYERB_SEGMENT_COUNT:
- c->layer[1].segment_count = tvp->u.data;
- break;
- case DTV_ISDBT_LAYERB_TIME_INTERLEAVING:
- c->layer[1].interleaving = tvp->u.data;
- break;
- case DTV_ISDBT_LAYERC_FEC:
- c->layer[2].fec = tvp->u.data;
- break;
- case DTV_ISDBT_LAYERC_MODULATION:
- c->layer[2].modulation = tvp->u.data;
- break;
- case DTV_ISDBT_LAYERC_SEGMENT_COUNT:
- c->layer[2].segment_count = tvp->u.data;
- break;
- case DTV_ISDBT_LAYERC_TIME_INTERLEAVING:
- c->layer[2].interleaving = tvp->u.data;
- break;
- /* Multistream support */
- case DTV_STREAM_ID:
- case DTV_DVBT2_PLP_ID_LEGACY:
- c->stream_id = tvp->u.data;
- break;
- /* ATSC-MH */
- case DTV_ATSCMH_PARADE_ID:
- fe->dtv_property_cache.atscmh_parade_id = tvp->u.data;
- break;
- case DTV_ATSCMH_RS_FRAME_ENSEMBLE:
- fe->dtv_property_cache.atscmh_rs_frame_ensemble = tvp->u.data;
- break;
- case DTV_LNA:
- c->lna = tvp->u.data;
- if (fe->ops.set_lna)
- r = fe->ops.set_lna(fe);
- if (r < 0)
- c->lna = LNA_AUTO;
- break;
- default:
- return -EINVAL;
- }
- return r;
- }
- static int dvb_frontend_ioctl(struct file *file,
- unsigned int cmd, void *parg)
- {
- struct dvb_device *dvbdev = file->private_data;
- struct dvb_frontend *fe = dvbdev->priv;
- struct dtv_frontend_properties *c = &fe->dtv_property_cache;
- struct dvb_frontend_private *fepriv = fe->frontend_priv;
- int err = -EOPNOTSUPP;
- dev_dbg(fe->dvb->device, "%s: (%d)\n", __func__, _IOC_NR(cmd));
- if (down_interruptible(&fepriv->sem))
- return -ERESTARTSYS;
- if (fe->exit != DVB_FE_NO_EXIT) {
- up(&fepriv->sem);
- 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)) {
- up(&fepriv->sem);
- return -EPERM;
- }
- if ((cmd == FE_SET_PROPERTY) || (cmd == FE_GET_PROPERTY))
- err = dvb_frontend_ioctl_properties(file, cmd, parg);
- else {
- c->state = DTV_UNDEFINED;
- err = dvb_frontend_ioctl_legacy(file, cmd, parg);
- }
- up(&fepriv->sem);
- return err;
- }
- static int dvb_frontend_ioctl_properties(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;
- struct dtv_frontend_properties *c = &fe->dtv_property_cache;
- int err = 0;
- struct dtv_properties *tvps = parg;
- struct dtv_property *tvp = NULL;
- int i;
- dev_dbg(fe->dvb->device, "%s:\n", __func__);
- if (cmd == FE_SET_PROPERTY) {
- dev_dbg(fe->dvb->device, "%s: properties.num = %d\n", __func__, tvps->num);
- dev_dbg(fe->dvb->device, "%s: properties.props = %p\n", __func__, tvps->props);
- /* Put an arbitrary limit on the number of messages that can
- * be sent at once */
- if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS))
- return -EINVAL;
- tvp = kmalloc(tvps->num * sizeof(struct dtv_property), GFP_KERNEL);
- if (!tvp) {
- err = -ENOMEM;
- goto out;
- }
- if (copy_from_user(tvp, (void __user *)tvps->props,
- tvps->num * sizeof(struct dtv_property))) {
- err = -EFAULT;
- goto out;
- }
- for (i = 0; i < tvps->num; i++) {
- err = dtv_property_process_set(fe, tvp + i, file);
- if (err < 0)
- goto out;
- (tvp + i)->result = err;
- }
- if (c->state == DTV_TUNE)
- dev_dbg(fe->dvb->device, "%s: Property cache is full, tuning\n", __func__);
- } else if (cmd == FE_GET_PROPERTY) {
- dev_dbg(fe->dvb->device, "%s: properties.num = %d\n", __func__, tvps->num);
- dev_dbg(fe->dvb->device, "%s: properties.props = %p\n", __func__, tvps->props);
- /* Put an arbitrary limit on the number of messages that can
- * be sent at once */
- if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS))
- return -EINVAL;
- tvp = kmalloc(tvps->num * sizeof(struct dtv_property), GFP_KERNEL);
- if (!tvp) {
- err = -ENOMEM;
- goto out;
- }
- if (copy_from_user(tvp, (void __user *)tvps->props,
- tvps->num * sizeof(struct dtv_property))) {
- err = -EFAULT;
- goto out;
- }
- /*
- * Fills the cache out struct with the cache contents, plus
- * the data retrieved from get_frontend, if the frontend
- * is not idle. Otherwise, returns the cached content
- */
- if (fepriv->state != FESTATE_IDLE) {
- err = dtv_get_frontend(fe, NULL);
- if (err < 0)
- goto out;
- }
- for (i = 0; i < tvps->num; i++) {
- err = dtv_property_process_get(fe, c, tvp + i, file);
- if (err < 0)
- goto out;
- (tvp + i)->result = err;
- }
- if (copy_to_user((void __user *)tvps->props, tvp,
- tvps->num * sizeof(struct dtv_property))) {
- err = -EFAULT;
- goto out;
- }
- } else
- err = -EOPNOTSUPP;
- out:
- kfree(tvp);
- return err;
- }
- static int dtv_set_frontend(struct dvb_frontend *fe)
- {
- struct dvb_frontend_private *fepriv = fe->frontend_priv;
- struct dtv_frontend_properties *c = &fe->dtv_property_cache;
- struct dvb_frontend_tune_settings fetunesettings;
- u32 rolloff = 0;
- if (dvb_frontend_check_parameters(fe) < 0)
- return -EINVAL;
- /*
- * Initialize output parameters to match the values given by
- * the user. FE_SET_FRONTEND triggers an initial frontend event
- * with status = 0, which copies output parameters to userspace.
- */
- dtv_property_legacy_params_sync(fe, &fepriv->parameters_out);
- /*
- * Be sure that the bandwidth will be filled for all
- * non-satellite systems, as tuners need to know what
- * low pass/Nyquist half filter should be applied, in
- * order to avoid inter-channel noise.
- *
- * ISDB-T and DVB-T/T2 already sets bandwidth.
- * ATSC and DVB-C don't set, so, the core should fill it.
- *
- * On DVB-C Annex A and C, the bandwidth is a function of
- * the roll-off and symbol rate. Annex B defines different
- * roll-off factors depending on the modulation. Fortunately,
- * Annex B is only used with 6MHz, so there's no need to
- * calculate it.
- *
- * While not officially supported, a side effect of handling it at
- * the cache level is that a program could retrieve the bandwidth
- * via DTV_BANDWIDTH_HZ, which may be useful for test programs.
- */
- switch (c->delivery_system) {
- case SYS_ATSC:
- case SYS_DVBC_ANNEX_B:
- c->bandwidth_hz = 6000000;
- break;
- case SYS_DVBC_ANNEX_A:
- rolloff = 115;
- break;
- case SYS_DVBC_ANNEX_C:
- rolloff = 113;
- break;
- case SYS_DVBS:
- case SYS_TURBO:
- case SYS_ISDBS:
- rolloff = 135;
- break;
- case SYS_DVBS2:
- switch (c->rolloff) {
- case ROLLOFF_20:
- rolloff = 120;
- break;
- case ROLLOFF_25:
- rolloff = 125;
- break;
- default:
- case ROLLOFF_35:
- rolloff = 135;
- }
- break;
- default:
- break;
- }
- if (rolloff)
- c->bandwidth_hz = mult_frac(c->symbol_rate, rolloff, 100);
- /* force auto frequency inversion if requested */
- if (dvb_force_auto_inversion)
- c->inversion = INVERSION_AUTO;
- /*
- * without hierarchical coding code_rate_LP is irrelevant,
- * so we tolerate the otherwise invalid FEC_NONE setting
- */
- if (c->hierarchy == HIERARCHY_NONE && c->code_rate_LP == FEC_NONE)
- c->code_rate_LP = FEC_AUTO;
- /* get frontend-specific tuning settings */
- memset(&fetunesettings, 0, sizeof(struct dvb_frontend_tune_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 (c->delivery_system) {
- case SYS_DVBS:
- case SYS_DVBS2:
- case SYS_ISDBS:
- case SYS_TURBO:
- case SYS_DVBC_ANNEX_A:
- case SYS_DVBC_ANNEX_C:
- fepriv->min_delay = HZ / 20;
- fepriv->step_size = c->symbol_rate / 16000;
- fepriv->max_drift = c->symbol_rate / 2000;
- break;
- case SYS_DVBT:
- case SYS_DVBT2:
- case SYS_ISDBT:
- case SYS_DTMB:
- 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;
- default:
- /*
- * FIXME: This sounds wrong! if freqency_stepsize is
- * defined by the frontend, why not use it???
- */
- fepriv->min_delay = HZ / 20;
- fepriv->step_size = 0; /* no zigzag */
- fepriv->max_drift = 0;
- break;
- }
- }
- if (dvb_override_tune_delay > 0)
- fepriv->min_delay = (dvb_override_tune_delay * HZ) / 1000;
- fepriv->state = FESTATE_RETUNE;
- /* Request the search algorithm to search */
- fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN;
- dvb_frontend_clear_events(fe);
- dvb_frontend_add_event(fe, 0);
- dvb_frontend_wakeup(fe);
- fepriv->status = 0;
- return 0;
- }
- static int dvb_frontend_ioctl_legacy(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;
- struct dtv_frontend_properties *c = &fe->dtv_property_cache;
- 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_frequency_limits(fe, &info->frequency_min, &info->frequency_max);
- /*
- * Associate the 4 delivery systems supported by DVBv3
- * API with their DVBv5 counterpart. For the other standards,
- * use the closest type, assuming that it would hopefully
- * work with a DVBv3 application.
- * It should be noticed that, on multi-frontend devices with
- * different types (terrestrial and cable, for example),
- * a pure DVBv3 application won't be able to use all delivery
- * systems. Yet, changing the DVBv5 cache to the other delivery
- * system should be enough for making it work.
- */
- switch (dvbv3_type(c->delivery_system)) {
- case DVBV3_QPSK:
- info->type = FE_QPSK;
- break;
- case DVBV3_ATSC:
- info->type = FE_ATSC;
- break;
- case DVBV3_QAM:
- info->type = FE_QAM;
- break;
- case DVBV3_OFDM:
- info->type = FE_OFDM;
- break;
- default:
- dev_err(fe->dvb->device,
- "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
- __func__, c->delivery_system);
- fe->ops.info.type = FE_OFDM;
- }
- dev_dbg(fe->dvb->device, "%s: current delivery system on cache: %d, V3 type: %d\n",
- __func__, c->delivery_system, fe->ops.info.type);
- /* Set CAN_INVERSION_AUTO bit on in other than oneshot mode */
- if (!(fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT))
- info->caps |= FE_CAN_INVERSION_AUTO;
- err = 0;
- break;
- }
- case FE_READ_STATUS: {
- enum fe_status *status = parg;
- /* if retune was requested but hasn't occurred yet, prevent
- * that user get signal state from previous tuning */
- if (fepriv->state == FESTATE_RETUNE ||
- fepriv->state == FESTATE_ERROR) {
- 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) {
- if (fepriv->thread)
- err = fe->ops.read_ber(fe, (__u32 *) parg);
- else
- err = -EAGAIN;
- }
- break;
- case FE_READ_SIGNAL_STRENGTH:
- if (fe->ops.read_signal_strength) {
- if (fepriv->thread)
- err = fe->ops.read_signal_strength(fe, (__u16 *) parg);
- else
- err = -EAGAIN;
- }
- break;
- case FE_READ_SNR:
- if (fe->ops.read_snr) {
- if (fepriv->thread)
- err = fe->ops.read_snr(fe, (__u16 *) parg);
- else
- err = -EAGAIN;
- }
- break;
- case FE_READ_UNCORRECTED_BLOCKS:
- if (fe->ops.read_ucblocks) {
- if (fepriv->thread)
- err = fe->ops.read_ucblocks(fe, (__u32 *) parg);
- else
- err = -EAGAIN;
- }
- 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) {
- struct dvb_diseqc_master_cmd *cmd = parg;
- if (cmd->msg_len > sizeof(cmd->msg)) {
- err = -EINVAL;
- break;
- }
- err = fe->ops.diseqc_send_master_cmd(fe, cmd);
- 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,
- (enum fe_sec_mini_cmd)parg);
- fepriv->state = FESTATE_DISEQC;
- fepriv->status = 0;
- }
- break;
- case FE_SET_TONE:
- if (fe->ops.set_tone) {
- err = fe->ops.set_tone(fe,
- (enum fe_sec_tone_mode)parg);
- fepriv->tone = (enum fe_sec_tone_mode)parg;
- fepriv->state = FESTATE_DISEQC;
- fepriv->status = 0;
- }
- break;
- case FE_SET_VOLTAGE:
- if (fe->ops.set_voltage) {
- err = fe->ops.set_voltage(fe,
- (enum fe_sec_voltage)parg);
- fepriv->voltage = (enum fe_sec_voltage)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 should 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 dependent
- * 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;
- ktime_t nexttime;
- ktime_t tv[10];
- int i;
- u8 last = 1;
- if (dvb_frontend_debug)
- printk("%s switch command: 0x%04lx\n", __func__, swcmd);
- nexttime = ktime_get_real();
- if (dvb_frontend_debug)
- tv[0] = nexttime;
- /* 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)
- tv[i+1] = ktime_get_real();
- 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,
- (int) ktime_us_delta(tv[i], tv[i-1]));
- }
- 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:
- err = dvbv3_set_delivery_system(fe);
- if (err)
- break;
- err = dtv_property_cache_sync(fe, c, parg);
- if (err)
- break;
- err = dtv_set_frontend(fe);
- break;
- case FE_GET_EVENT:
- err = dvb_frontend_get_event (fe, parg, file->f_flags);
- break;
- case FE_GET_FRONTEND:
- err = dtv_get_frontend(fe, 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;
- dev_dbg_ratelimited(fe->dvb->device, "%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;
- struct dvb_adapter *adapter = fe->dvb;
- int ret;
- dev_dbg(fe->dvb->device, "%s:\n", __func__);
- if (fe->exit == DVB_FE_DEVICE_REMOVED)
- return -ENODEV;
- if (adapter->mfe_shared) {
- mutex_lock (&adapter->mfe_lock);
- if (adapter->mfe_dvbdev == NULL)
- adapter->mfe_dvbdev = dvbdev;
- else if (adapter->mfe_dvbdev != dvbdev) {
- struct dvb_device
- *mfedev = adapter->mfe_dvbdev;
- struct dvb_frontend
- *mfe = mfedev->priv;
- struct dvb_frontend_private
- *mfepriv = mfe->frontend_priv;
- int mferetry = (dvb_mfe_wait_time << 1);
- mutex_unlock (&adapter->mfe_lock);
- while (mferetry-- && (mfedev->users != -1 ||
- mfepriv->thread != NULL)) {
- if(msleep_interruptible(500)) {
- if(signal_pending(current))
- return -EINTR;
- }
- }
- mutex_lock (&adapter->mfe_lock);
- if(adapter->mfe_dvbdev != dvbdev) {
- mfedev = adapter->mfe_dvbdev;
- mfe = mfedev->priv;
- mfepriv = mfe->frontend_priv;
- if (mfedev->users != -1 ||
- mfepriv->thread != NULL) {
- mutex_unlock (&adapter->mfe_lock);
- return -EBUSY;
- }
- adapter->mfe_dvbdev = dvbdev;
- }
- }
- }
- if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl) {
- if ((ret = fe->ops.ts_bus_ctrl(fe, 1)) < 0)
- goto err0;
- /* If we took control of the bus, we need to force
- reinitialization. This is because many ts_bus_ctrl()
- functions strobe the RESET pin on the demod, and if the
- frontend thread already exists then the dvb_init() routine
- won't get called (which is what usually does initial
- register configuration). */
- fepriv->reinitialise = 1;
- }
- 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;
- }
- if (adapter->mfe_shared)
- mutex_unlock (&adapter->mfe_lock);
- 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);
- err0:
- if (adapter->mfe_shared)
- mutex_unlock (&adapter->mfe_lock);
- 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;
- dev_dbg(fe->dvb->device, "%s:\n", __func__);
- if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
- fepriv->release_jiffies = jiffies;
- mb();
- }
- ret = dvb_generic_release (inode, file);
- if (dvbdev->users == -1) {
- wake_up(&fepriv->wait_queue);
- if (fe->exit != DVB_FE_NO_EXIT)
- wake_up(&dvbdev->wait_queue);
- if (fe->ops.ts_bus_ctrl)
- fe->ops.ts_bus_ctrl(fe, 0);
- }
- return ret;
- }
- static const struct file_operations dvb_frontend_fops = {
- .owner = THIS_MODULE,
- .unlocked_ioctl = dvb_generic_ioctl,
- .poll = dvb_frontend_poll,
- .open = dvb_frontend_open,
- .release = dvb_frontend_release,
- .llseek = noop_llseek,
- };
- int dvb_frontend_suspend(struct dvb_frontend *fe)
- {
- int ret = 0;
- dev_dbg(fe->dvb->device, "%s: adap=%d fe=%d\n", __func__, fe->dvb->num,
- fe->id);
- if (fe->ops.tuner_ops.suspend)
- ret = fe->ops.tuner_ops.suspend(fe);
- else if (fe->ops.tuner_ops.sleep)
- ret = fe->ops.tuner_ops.sleep(fe);
- if (fe->ops.sleep)
- ret = fe->ops.sleep(fe);
- return ret;
- }
- EXPORT_SYMBOL(dvb_frontend_suspend);
- int dvb_frontend_resume(struct dvb_frontend *fe)
- {
- struct dvb_frontend_private *fepriv = fe->frontend_priv;
- int ret = 0;
- dev_dbg(fe->dvb->device, "%s: adap=%d fe=%d\n", __func__, fe->dvb->num,
- fe->id);
- fe->exit = DVB_FE_DEVICE_RESUME;
- if (fe->ops.init)
- ret = fe->ops.init(fe);
- if (fe->ops.tuner_ops.resume)
- ret = fe->ops.tuner_ops.resume(fe);
- else if (fe->ops.tuner_ops.init)
- ret = fe->ops.tuner_ops.init(fe);
- fe->exit = DVB_FE_NO_EXIT;
- fepriv->state = FESTATE_RETUNE;
- dvb_frontend_wakeup(fe);
- return ret;
- }
- EXPORT_SYMBOL(dvb_frontend_resume);
- int dvb_register_frontend(struct dvb_adapter* dvb,
- struct dvb_frontend* fe)
- {
- struct dvb_frontend_private *fepriv;
- const struct dvb_device dvbdev_template = {
- .users = ~0,
- .writers = 1,
- .readers = (~0)-1,
- .fops = &dvb_frontend_fops,
- #if defined(CONFIG_MEDIA_CONTROLLER_DVB)
- .name = fe->ops.info.name,
- #endif
- .kernel_ioctl = dvb_frontend_ioctl
- };
- dev_dbg(dvb->device, "%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;
- sema_init(&fepriv->sem, 1);
- 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;
- dev_info(fe->dvb->device,
- "DVB: registering adapter %i frontend %i (%s)...\n",
- fe->dvb->num, fe->id, fe->ops.info.name);
- dvb_register_device (fe->dvb, &fepriv->dvbdev, &dvbdev_template,
- fe, DVB_DEVICE_FRONTEND);
- /*
- * Initialize the cache to the proper values according with the
- * first supported delivery system (ops->delsys[0])
- */
- fe->dtv_property_cache.delivery_system = fe->ops.delsys[0];
- dvb_frontend_clear_cache(fe);
- 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;
- dev_dbg(fe->dvb->device, "%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);
- dvb_detach(fe->ops.release_sec);
- }
- if (fe->ops.tuner_ops.release) {
- fe->ops.tuner_ops.release(fe);
- dvb_detach(fe->ops.tuner_ops.release);
- }
- if (fe->ops.analog_ops.release) {
- fe->ops.analog_ops.release(fe);
- dvb_detach(fe->ops.analog_ops.release);
- }
- ptr = (void*)fe->ops.release;
- if (ptr) {
- fe->ops.release(fe);
- dvb_detach(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);
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