// SPDX-License-Identifier: GPL-2.0-or-later /* * 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) */ /* Enables DVBv3 compatibility bits at the headers */ #define __DVB_CORE__ #define pr_fmt(fmt) "dvb_frontend: " fmt #include <linux/string.h> #include <linux/kernel.h> #include <linux/sched/signal.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 <linux/compat.h> #include <asm/processor.h> #include <media/dvb_frontend.h> #include <media/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 dprintk(fmt, arg...) \ <------>printk(KERN_DEBUG pr_fmt("%s: " fmt), __func__, ##arg) #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; #endif }; static void dvb_frontend_invoke_release(struct dvb_frontend *fe, <------><------><------><------><------>void (*release)(struct dvb_frontend *fe)); static void __dvb_frontend_free(struct dvb_frontend *fe) { <------>struct dvb_frontend_private *fepriv = fe->frontend_priv; <------>if (fepriv) <------><------>dvb_free_device(fepriv->dvbdev); <------>dvb_frontend_invoke_release(fe, fe->ops.release); <------>kfree(fepriv); } static void dvb_frontend_free(struct kref *ref) { <------>struct dvb_frontend *fe = <------><------>container_of(ref, struct dvb_frontend, refcount); <------>__dvb_frontend_free(fe); } static void dvb_frontend_put(struct dvb_frontend *fe) { <------>/* call detach before dropping the reference count */ <------>if (fe->ops.detach) <------><------>fe->ops.detach(fe); <------>/* <------> * Check if the frontend was registered, as otherwise <------> * kref was not initialized yet. <------> */ <------>if (fe->frontend_priv) <------><------>kref_put(&fe->refcount, dvb_frontend_free); <------>else <------><------>__dvb_frontend_free(fe); } static void dvb_frontend_get(struct dvb_frontend *fe) { <------>kref_get(&fe->refcount); } static void dvb_frontend_wakeup(struct dvb_frontend *fe); static int dtv_get_frontend(struct dvb_frontend *fe, <------><------><------> struct dtv_frontend_properties *c, <------><------><------> struct dvb_frontend_parameters *p_out); static int dtv_property_legacy_params_sync(struct dvb_frontend *fe, <------><------><------><------>const struct dtv_frontend_properties *c, <------><------><------><------>struct dvb_frontend_parameters *p); static bool has_get_frontend(struct dvb_frontend *fe) { <------>return fe->ops.get_frontend; } /* * 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 dtv_frontend_properties *c = &fe->dtv_property_cache; <------>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, c, &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); } /** * dvb_frontend_swzigzag_autotune - Performs automatic twiddling of frontend * parameters. * * @fe: The frontend concerned. * @check_wrapped: Checks if an iteration has completed. * DO NOT SET ON THE FIRST ATTEMPT. * * return: 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 = FE_NONE; <------>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 re-tuned, 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); } static int dvb_frontend_thread(void *data) { <------>struct dvb_frontend *fe = data; <------>struct dtv_frontend_properties *c = &fe->dtv_property_cache; <------>struct dvb_frontend_private *fepriv = fe->frontend_priv; <------>enum fe_status s = FE_NONE; <------>enum dvbfe_algo algo; <------>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; <------>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, c, &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); <------><------>} <------>} <------>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 for the amount of time given by add_usec parameter * * This needs to be as precise as possible, as it affects the detection of * the dish tone command at the satellite subsystem. The precision is improved * by using a scheduled msleep followed by udelay for the remainder. */ void dvb_frontend_sleep_until(ktime_t *waketime, u32 add_usec) { <------>s32 delta; <------>*waketime = ktime_add_us(*waketime, add_usec); <------>delta = ktime_us_delta(ktime_get_boottime(), *waketime); <------>if (delta > 2500) { <------><------>msleep((delta - 1500) / 1000); <------><------>delta = ktime_us_delta(ktime_get_boottime(), *waketime); <------>} <------>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, <------><------><------><------><------> u32 *tolerance) { <------>struct dtv_frontend_properties *c = &fe->dtv_property_cache; <------>u32 tuner_min = fe->ops.tuner_ops.info.frequency_min_hz; <------>u32 tuner_max = fe->ops.tuner_ops.info.frequency_max_hz; <------>u32 frontend_min = fe->ops.info.frequency_min_hz; <------>u32 frontend_max = fe->ops.info.frequency_max_hz; <------>*freq_min = max(frontend_min, tuner_min); <------>if (frontend_max == 0) <------><------>*freq_max = tuner_max; <------>else if (tuner_max == 0) <------><------>*freq_max = frontend_max; <------>else <------><------>*freq_max = min(frontend_max, tuner_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); <------>dev_dbg(fe->dvb->device, "frequency interval: tuner: %u...%u, frontend: %u...%u", <------><------>tuner_min, tuner_max, frontend_min, frontend_max); <------>/* If the standard is for satellite, convert frequencies to kHz */ <------>switch (c->delivery_system) { <------>case SYS_DVBS: <------>case SYS_DVBS2: <------>case SYS_TURBO: <------>case SYS_ISDBS: <------><------>*freq_min /= kHz; <------><------>*freq_max /= kHz; <------><------>if (tolerance) <------><------><------>*tolerance = fe->ops.info.frequency_tolerance_hz / kHz; <------><------>break; <------>default: <------><------>if (tolerance) <------><------><------>*tolerance = fe->ops.info.frequency_tolerance_hz; <------><------>break; <------>} } static u32 dvb_frontend_get_stepsize(struct dvb_frontend *fe) { <------>struct dtv_frontend_properties *c = &fe->dtv_property_cache; <------>u32 fe_step = fe->ops.info.frequency_stepsize_hz; <------>u32 tuner_step = fe->ops.tuner_ops.info.frequency_step_hz; <------>u32 step = max(fe_step, tuner_step); <------>switch (c->delivery_system) { <------>case SYS_DVBS: <------>case SYS_DVBS2: <------>case SYS_TURBO: <------>case SYS_ISDBS: <------><------>step /= kHz; <------><------>break; <------>default: <------><------>break; <------>} <------>return step; } 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, NULL); <------>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; <------>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 = 7; /* All layers (A,B,C) */ <------>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; <------>c->scrambling_sequence_index = 0;/* default sequence */ <------>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 \ } struct dtv_cmds_h { <------>char *name; /* A display name for debugging purposes */ <------>__u32 cmd; /* A unique ID */ <------>/* Flags */ <------>__u32 set:1; /* Either a set or get property */ <------>__u32 buffer:1; /* Does this property use the buffer? */ <------>__u32 reserved:30; /* Align */ }; 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_SCRAMBLING_SEQUENCE_INDEX, 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), }; /* 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, <------><------><------><------>const struct dtv_frontend_properties *c, <------><------><------><------>struct dvb_frontend_parameters *p) { <------>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 dtv_frontend_properties *c, <------><------><------> struct dvb_frontend_parameters *p_out) { <------>int r; <------>if (fe->ops.get_frontend) { <------><------>r = fe->ops.get_frontend(fe, c); <------><------>if (unlikely(r < 0)) <------><------><------>return r; <------><------>if (p_out) <------><------><------>dtv_property_legacy_params_sync(fe, c, p_out); <------><------>return 0; <------>} <------>/* As everything is in cache, get_frontend fops are always supported */ <------>return 0; } static int dvb_frontend_handle_ioctl(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 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; <------>/* Physical layer scrambling support */ <------>case DTV_SCRAMBLING_SEQUENCE_INDEX: <------><------>tvp->u.data = c->scrambling_sequence_index; <------><------>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; <------>} <------>if (!dtv_cmds[tvp->cmd].buffer) <------><------>dev_dbg(fe->dvb->device, <------><------><------>"%s: GET cmd 0x%08x (%s) = 0x%08x\n", <------><------><------>__func__, tvp->cmd, dtv_cmds[tvp->cmd].name, <------><------><------>tvp->u.data); <------>else <------><------>dev_dbg(fe->dvb->device, <------><------><------>"%s: GET cmd 0x%08x (%s) len %d: %*ph\n", <------><------><------>__func__, <------><------><------>tvp->cmd, dtv_cmds[tvp->cmd].name, <------><------><------>tvp->u.buffer.len, <------><------><------>tvp->u.buffer.len, tvp->u.buffer.data); <------>return 0; } static int dtv_set_frontend(struct dvb_frontend *fe); static bool is_dvbv3_delsys(u32 delsys) { <------>return (delsys == SYS_DVBT) || (delsys == SYS_DVBC_ANNEX_A) || <------> (delsys == SYS_DVBS) || (delsys == SYS_ATSC); } /** * 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 frontend * 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); } /** * dtv_property_process_set - Sets a single DTV property * @fe: Pointer to &struct dvb_frontend * @file: Pointer to &struct file * @cmd: Digital TV command * @data: An unsigned 32-bits number * * This routine assigns the property * value to the corresponding member of * &struct dtv_frontend_properties * * Returns: * Zero on success, negative errno on failure. */ static int dtv_property_process_set(struct dvb_frontend *fe, <------><------><------><------> struct file *file, <------><------><------><------> u32 cmd, u32 data) { <------>int r = 0; <------>struct dtv_frontend_properties *c = &fe->dtv_property_cache; <------>/** Dump DTV command name and value*/ <------>if (!cmd || cmd > DTV_MAX_COMMAND) <------><------>dev_warn(fe->dvb->device, "%s: SET cmd 0x%08x undefined\n", <------><------><------> __func__, cmd); <------>else <------><------>dev_dbg(fe->dvb->device, <------><------><------>"%s: SET cmd 0x%08x (%s) to 0x%08x\n", <------><------><------>__func__, cmd, dtv_cmds[cmd].name, data); <------>switch (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: <------><------>/* <------><------> * Use the cached Digital TV properties to tune the <------><------> * frontend <------><------> */ <------><------>dev_dbg(fe->dvb->device, <------><------><------>"%s: Setting the frontend from property cache\n", <------><------><------>__func__); <------><------>r = dtv_set_frontend(fe); <------><------>break; <------>case DTV_FREQUENCY: <------><------>c->frequency = data; <------><------>break; <------>case DTV_MODULATION: <------><------>c->modulation = data; <------><------>break; <------>case DTV_BANDWIDTH_HZ: <------><------>c->bandwidth_hz = data; <------><------>break; <------>case DTV_INVERSION: <------><------>c->inversion = data; <------><------>break; <------>case DTV_SYMBOL_RATE: <------><------>c->symbol_rate = data; <------><------>break; <------>case DTV_INNER_FEC: <------><------>c->fec_inner = data; <------><------>break; <------>case DTV_PILOT: <------><------>c->pilot = data; <------><------>break; <------>case DTV_ROLLOFF: <------><------>c->rolloff = data; <------><------>break; <------>case DTV_DELIVERY_SYSTEM: <------><------>r = dvbv5_set_delivery_system(fe, data); <------><------>break; <------>case DTV_VOLTAGE: <------><------>c->voltage = data; <------><------>r = dvb_frontend_handle_ioctl(file, FE_SET_VOLTAGE, <------><------><------><------><------> (void *)c->voltage); <------><------>break; <------>case DTV_TONE: <------><------>c->sectone = data; <------><------>r = dvb_frontend_handle_ioctl(file, FE_SET_TONE, <------><------><------><------><------> (void *)c->sectone); <------><------>break; <------>case DTV_CODE_RATE_HP: <------><------>c->code_rate_HP = data; <------><------>break; <------>case DTV_CODE_RATE_LP: <------><------>c->code_rate_LP = data; <------><------>break; <------>case DTV_GUARD_INTERVAL: <------><------>c->guard_interval = data; <------><------>break; <------>case DTV_TRANSMISSION_MODE: <------><------>c->transmission_mode = data; <------><------>break; <------>case DTV_HIERARCHY: <------><------>c->hierarchy = data; <------><------>break; <------>case DTV_INTERLEAVING: <------><------>c->interleaving = data; <------><------>break; <------>/* ISDB-T Support here */ <------>case DTV_ISDBT_PARTIAL_RECEPTION: <------><------>c->isdbt_partial_reception = data; <------><------>break; <------>case DTV_ISDBT_SOUND_BROADCASTING: <------><------>c->isdbt_sb_mode = data; <------><------>break; <------>case DTV_ISDBT_SB_SUBCHANNEL_ID: <------><------>c->isdbt_sb_subchannel = data; <------><------>break; <------>case DTV_ISDBT_SB_SEGMENT_IDX: <------><------>c->isdbt_sb_segment_idx = data; <------><------>break; <------>case DTV_ISDBT_SB_SEGMENT_COUNT: <------><------>c->isdbt_sb_segment_count = data; <------><------>break; <------>case DTV_ISDBT_LAYER_ENABLED: <------><------>c->isdbt_layer_enabled = data; <------><------>break; <------>case DTV_ISDBT_LAYERA_FEC: <------><------>c->layer[0].fec = data; <------><------>break; <------>case DTV_ISDBT_LAYERA_MODULATION: <------><------>c->layer[0].modulation = data; <------><------>break; <------>case DTV_ISDBT_LAYERA_SEGMENT_COUNT: <------><------>c->layer[0].segment_count = data; <------><------>break; <------>case DTV_ISDBT_LAYERA_TIME_INTERLEAVING: <------><------>c->layer[0].interleaving = data; <------><------>break; <------>case DTV_ISDBT_LAYERB_FEC: <------><------>c->layer[1].fec = data; <------><------>break; <------>case DTV_ISDBT_LAYERB_MODULATION: <------><------>c->layer[1].modulation = data; <------><------>break; <------>case DTV_ISDBT_LAYERB_SEGMENT_COUNT: <------><------>c->layer[1].segment_count = data; <------><------>break; <------>case DTV_ISDBT_LAYERB_TIME_INTERLEAVING: <------><------>c->layer[1].interleaving = data; <------><------>break; <------>case DTV_ISDBT_LAYERC_FEC: <------><------>c->layer[2].fec = data; <------><------>break; <------>case DTV_ISDBT_LAYERC_MODULATION: <------><------>c->layer[2].modulation = data; <------><------>break; <------>case DTV_ISDBT_LAYERC_SEGMENT_COUNT: <------><------>c->layer[2].segment_count = data; <------><------>break; <------>case DTV_ISDBT_LAYERC_TIME_INTERLEAVING: <------><------>c->layer[2].interleaving = data; <------><------>break; <------>/* Multistream support */ <------>case DTV_STREAM_ID: <------>case DTV_DVBT2_PLP_ID_LEGACY: <------><------>c->stream_id = data; <------><------>break; <------>/* Physical layer scrambling support */ <------>case DTV_SCRAMBLING_SEQUENCE_INDEX: <------><------>c->scrambling_sequence_index = data; <------><------>break; <------>/* ATSC-MH */ <------>case DTV_ATSCMH_PARADE_ID: <------><------>fe->dtv_property_cache.atscmh_parade_id = data; <------><------>break; <------>case DTV_ATSCMH_RS_FRAME_ENSEMBLE: <------><------>fe->dtv_property_cache.atscmh_rs_frame_ensemble = data; <------><------>break; <------>case DTV_LNA: <------><------>c->lna = 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_do_ioctl(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; <------>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 the frontend is opened in read-only mode, only the ioctls <------> * that don't interfere with the tune logic should be accepted. <------> * That allows an external application to monitor the DVB QoS and <------> * statistics parameters. <------> * <------> * That matches all _IOR() ioctls, except for two special cases: <------> * - FE_GET_EVENT is part of the tuning logic on a DVB application; <------> * - FE_DISEQC_RECV_SLAVE_REPLY is part of DiSEqC 2.0 <------> * setup <------> * So, those two ioctls should also return -EPERM, as otherwise <------> * reading from them would interfere with a DVB tune application <------> */ <------>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; <------>} <------>err = dvb_frontend_handle_ioctl(file, cmd, parg); <------>up(&fepriv->sem); <------>return err; } static long dvb_frontend_ioctl(struct file *file, unsigned int cmd, <------><------><------> unsigned long arg) { <------>struct dvb_device *dvbdev = file->private_data; <------>if (!dvbdev) <------><------>return -ENODEV; <------>return dvb_usercopy(file, cmd, arg, dvb_frontend_do_ioctl); } #ifdef CONFIG_COMPAT struct compat_dtv_property { <------>__u32 cmd; <------>__u32 reserved[3]; <------>union { <------><------>__u32 data; <------><------>struct dtv_fe_stats st; <------><------>struct { <------><------><------>__u8 data[32]; <------><------><------>__u32 len; <------><------><------>__u32 reserved1[3]; <------><------><------>compat_uptr_t reserved2; <------><------>} buffer; <------>} u; <------>int result; } __attribute__ ((packed)); struct compat_dtv_properties { <------>__u32 num; <------>compat_uptr_t props; }; #define COMPAT_FE_SET_PROPERTY _IOW('o', 82, struct compat_dtv_properties) #define COMPAT_FE_GET_PROPERTY _IOR('o', 83, struct compat_dtv_properties) static int dvb_frontend_handle_compat_ioctl(struct file *file, unsigned int cmd, <------><------><------><------><------> unsigned long arg) { <------>struct dvb_device *dvbdev = file->private_data; <------>struct dvb_frontend *fe = dvbdev->priv; <------>struct dvb_frontend_private *fepriv = fe->frontend_priv; <------>int i, err = 0; <------>if (cmd == COMPAT_FE_SET_PROPERTY) { <------><------>struct compat_dtv_properties prop, *tvps = NULL; <------><------>struct compat_dtv_property *tvp = NULL; <------><------>if (copy_from_user(&prop, compat_ptr(arg), sizeof(prop))) <------><------><------>return -EFAULT; <------><------>tvps = ∝ <------><------>/* <------><------> * Put an arbitrary limit on the number of messages that can <------><------> * be sent at once <------><------> */ <------><------>if (!tvps->num || (tvps->num > DTV_IOCTL_MAX_MSGS)) <------><------><------>return -EINVAL; <------><------>tvp = memdup_user(compat_ptr(tvps->props), tvps->num * sizeof(*tvp)); <------><------>if (IS_ERR(tvp)) <------><------><------>return PTR_ERR(tvp); <------><------>for (i = 0; i < tvps->num; i++) { <------><------><------>err = dtv_property_process_set(fe, file, <------><------><------><------><------><------> (tvp + i)->cmd, <------><------><------><------><------><------> (tvp + i)->u.data); <------><------><------>if (err < 0) { <------><------><------><------>kfree(tvp); <------><------><------><------>return err; <------><------><------>} <------><------>} <------><------>kfree(tvp); <------>} else if (cmd == COMPAT_FE_GET_PROPERTY) { <------><------>struct compat_dtv_properties prop, *tvps = NULL; <------><------>struct compat_dtv_property *tvp = NULL; <------><------>struct dtv_frontend_properties getp = fe->dtv_property_cache; <------><------>if (copy_from_user(&prop, compat_ptr(arg), sizeof(prop))) <------><------><------>return -EFAULT; <------><------>tvps = ∝ <------><------>/* <------><------> * Put an arbitrary limit on the number of messages that can <------><------> * be sent at once <------><------> */ <------><------>if (!tvps->num || (tvps->num > DTV_IOCTL_MAX_MSGS)) <------><------><------>return -EINVAL; <------><------>tvp = memdup_user(compat_ptr(tvps->props), tvps->num * sizeof(*tvp)); <------><------>if (IS_ERR(tvp)) <------><------><------>return PTR_ERR(tvp); <------><------>/* <------><------> * Let's use our own copy of property cache, in order to <------><------> * avoid mangling with DTV zigzag logic, as drivers might <------><------> * return crap, if they don't check if the data is available <------><------> * before updating the properties cache. <------><------> */ <------><------>if (fepriv->state != FESTATE_IDLE) { <------><------><------>err = dtv_get_frontend(fe, &getp, NULL); <------><------><------>if (err < 0) { <------><------><------><------>kfree(tvp); <------><------><------><------>return err; <------><------><------>} <------><------>} <------><------>for (i = 0; i < tvps->num; i++) { <------><------><------>err = dtv_property_process_get( <------><------><------> fe, &getp, (struct dtv_property *)(tvp + i), file); <------><------><------>if (err < 0) { <------><------><------><------>kfree(tvp); <------><------><------><------>return err; <------><------><------>} <------><------>} <------><------>if (copy_to_user((void __user *)compat_ptr(tvps->props), tvp, <------><------><------><------> tvps->num * sizeof(struct compat_dtv_property))) { <------><------><------>kfree(tvp); <------><------><------>return -EFAULT; <------><------>} <------><------>kfree(tvp); <------>} <------>return err; } static long dvb_frontend_compat_ioctl(struct file *file, unsigned int cmd, <------><------><------><------> unsigned long arg) { <------>struct dvb_device *dvbdev = file->private_data; <------>struct dvb_frontend *fe = dvbdev->priv; <------>struct dvb_frontend_private *fepriv = fe->frontend_priv; <------>int err; <------>if (cmd == COMPAT_FE_SET_PROPERTY || cmd == COMPAT_FE_GET_PROPERTY) { <------><------>if (down_interruptible(&fepriv->sem)) <------><------><------>return -ERESTARTSYS; <------><------>err = dvb_frontend_handle_compat_ioctl(file, cmd, arg); <------><------>up(&fepriv->sem); <------><------>return err; <------>} <------>return dvb_frontend_ioctl(file, cmd, (unsigned long)compat_ptr(arg)); } #endif 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, c, &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 = dvb_frontend_get_stepsize(fe) * 2; <------><------><------>fepriv->max_drift = (dvb_frontend_get_stepsize(fe) * 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_get_property(struct dvb_frontend *fe, struct file *file, <------><------><------> struct dtv_properties *tvps) { <------>struct dvb_frontend_private *fepriv = fe->frontend_priv; <------>struct dtv_property *tvp = NULL; <------>struct dtv_frontend_properties getp; <------>int i, err; <------>memcpy(&getp, &fe->dtv_property_cache, sizeof(getp)); <------>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 || tvps->num > DTV_IOCTL_MAX_MSGS) <------><------>return -EINVAL; <------>tvp = memdup_user((void __user *)tvps->props, tvps->num * sizeof(*tvp)); <------>if (IS_ERR(tvp)) <------><------>return PTR_ERR(tvp); <------>/* <------> * Let's use our own copy of property cache, in order to <------> * avoid mangling with DTV zigzag logic, as drivers might <------> * return crap, if they don't check if the data is available <------> * before updating the properties cache. <------> */ <------>if (fepriv->state != FESTATE_IDLE) { <------><------>err = dtv_get_frontend(fe, &getp, NULL); <------><------>if (err < 0) <------><------><------>goto out; <------>} <------>for (i = 0; i < tvps->num; i++) { <------><------>err = dtv_property_process_get(fe, &getp, <------><------><------><------><------> tvp + i, file); <------><------>if (err < 0) <------><------><------>goto out; <------>} <------>if (copy_to_user((void __user *)tvps->props, tvp, <------><------><------> tvps->num * sizeof(struct dtv_property))) { <------><------>err = -EFAULT; <------><------>goto out; <------>} <------>err = 0; out: <------>kfree(tvp); <------>return err; } static int dvb_get_frontend(struct dvb_frontend *fe, <------><------><------> struct dvb_frontend_parameters *p_out) { <------>struct dtv_frontend_properties getp; <------>/* <------> * Let's use our own copy of property cache, in order to <------> * avoid mangling with DTV zigzag logic, as drivers might <------> * return crap, if they don't check if the data is available <------> * before updating the properties cache. <------> */ <------>memcpy(&getp, &fe->dtv_property_cache, sizeof(getp)); <------>return dtv_get_frontend(fe, &getp, p_out); } static int dvb_frontend_handle_ioctl(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 i, err = -ENOTSUPP; <------>dev_dbg(fe->dvb->device, "%s:\n", __func__); <------>switch (cmd) { <------>case FE_SET_PROPERTY: { <------><------>struct dtv_properties *tvps = parg; <------><------>struct dtv_property *tvp = NULL; <------><------>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 || (tvps->num > DTV_IOCTL_MAX_MSGS)) <------><------><------>return -EINVAL; <------><------>tvp = memdup_user((void __user *)tvps->props, tvps->num * sizeof(*tvp)); <------><------>if (IS_ERR(tvp)) <------><------><------>return PTR_ERR(tvp); <------><------>for (i = 0; i < tvps->num; i++) { <------><------><------>err = dtv_property_process_set(fe, file, <------><------><------><------><------><------> (tvp + i)->cmd, <------><------><------><------><------><------> (tvp + i)->u.data); <------><------><------>if (err < 0) { <------><------><------><------>kfree(tvp); <------><------><------><------>return err; <------><------><------>} <------><------>} <------><------>kfree(tvp); <------><------>err = 0; <------><------>break; <------>} <------>case FE_GET_PROPERTY: <------><------>err = dvb_get_property(fe, file, parg); <------><------>break; <------>case FE_GET_INFO: { <------><------>struct dvb_frontend_info *info = parg; <------><------>memset(info, 0, sizeof(*info)); <------><------>strscpy(info->name, fe->ops.info.name, sizeof(info->name)); <------><------>info->symbol_rate_min = fe->ops.info.symbol_rate_min; <------><------>info->symbol_rate_max = fe->ops.info.symbol_rate_max; <------><------>info->symbol_rate_tolerance = fe->ops.info.symbol_rate_tolerance; <------><------>info->caps = fe->ops.info.caps; <------><------>info->frequency_stepsize = dvb_frontend_get_stepsize(fe); <------><------>dvb_frontend_get_frequency_limits(fe, &info->frequency_min, <------><------><------><------><------><------> &info->frequency_max, <------><------><------><------><------><------> &info->frequency_tolerance); <------><------>/* <------><------> * 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); <------><------><------>info->type = FE_OFDM; <------><------>} <------><------>dev_dbg(fe->dvb->device, "%s: current delivery system on cache: %d, V3 type: %d\n", <------><------><------>__func__, c->delivery_system, 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_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_DISEQC_RECV_SLAVE_REPLY: <------><------>if (fe->ops.diseqc_recv_slave_reply) <------><------><------>err = fe->ops.diseqc_recv_slave_reply(fe, 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_TUNE_MODE: <------><------>fepriv->tune_mode_flags = (unsigned long)parg; <------><------>err = 0; <------><------>break; <------>/* DEPRECATED dish control ioctls */ <------>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) <------><------><------><------>dprintk("switch command: 0x%04lx\n", <------><------><------><------><------>swcmd); <------><------><------>nexttime = ktime_get_boottime(); <------><------><------>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_boottime(); <------><------><------><------>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) { <------><------><------><------>dprintk("(adapter %d): switch delay (should be 32k followed by all 8k)\n", <------><------><------><------><------>fe->dvb->num); <------><------><------><------>for (i = 1; i < 10; i++) <------><------><------><------><------>pr_info("%d: %d\n", i, <------><------><------><------><------><------>(int)ktime_us_delta(tv[i], tv[i - 1])); <------><------><------>} <------><------><------>err = 0; <------><------><------>fepriv->state = FESTATE_DISEQC; <------><------><------>fepriv->status = 0; <------><------>} <------><------>break; <------>/* DEPRECATED statistics ioctls */ <------>case FE_READ_BER: <------><------>if (fe->ops.read_ber) { <------><------><------>if (fepriv->thread) <------><------><------><------>err = fe->ops.read_ber(fe, 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, parg); <------><------><------>else <------><------><------><------>err = -EAGAIN; <------><------>} <------><------>break; <------>case FE_READ_SNR: <------><------>if (fe->ops.read_snr) { <------><------><------>if (fepriv->thread) <------><------><------><------>err = fe->ops.read_snr(fe, parg); <------><------><------>else <------><------><------><------>err = -EAGAIN; <------><------>} <------><------>break; <------>case FE_READ_UNCORRECTED_BLOCKS: <------><------>if (fe->ops.read_ucblocks) { <------><------><------>if (fepriv->thread) <------><------><------><------>err = fe->ops.read_ucblocks(fe, parg); <------><------><------>else <------><------><------><------>err = -EAGAIN; <------><------>} <------><------>break; <------>/* DEPRECATED DVBv3 ioctls */ <------>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 = dvb_get_frontend(fe, parg); <------><------>break; <------>default: <------><------>return -ENOTSUPP; <------>} /* switch */ <------>return err; } static __poll_t 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 (EPOLLIN | EPOLLRDNORM | EPOLLPRI); <------>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) <------><------><------>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)) { <------><------><------><------>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) { <------><------><------><------><------>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; #ifdef CONFIG_MEDIA_CONTROLLER_DVB <------><------>mutex_lock(&fe->dvb->mdev_lock); <------><------>if (fe->dvb->mdev) { <------><------><------>mutex_lock(&fe->dvb->mdev->graph_mutex); <------><------><------>if (fe->dvb->mdev->enable_source) <------><------><------><------>ret = fe->dvb->mdev->enable_source( <------><------><------><------><------><------><------> dvbdev->entity, <------><------><------><------><------><------><------> &fepriv->pipe); <------><------><------>mutex_unlock(&fe->dvb->mdev->graph_mutex); <------><------><------>if (ret) { <------><------><------><------>mutex_unlock(&fe->dvb->mdev_lock); <------><------><------><------>dev_err(fe->dvb->device, <------><------><------><------><------>"Tuner is busy. Error %d\n", ret); <------><------><------><------>goto err2; <------><------><------>} <------><------>} <------><------>mutex_unlock(&fe->dvb->mdev_lock); #endif <------><------>ret = dvb_frontend_start(fe); <------><------>if (ret) <------><------><------>goto err3; <------><------>/* empty event queue */ <------><------>fepriv->events.eventr = fepriv->events.eventw = 0; <------>} <------>dvb_frontend_get(fe); <------>if (adapter->mfe_shared) <------><------>mutex_unlock(&adapter->mfe_lock); <------>return ret; err3: #ifdef CONFIG_MEDIA_CONTROLLER_DVB <------>mutex_lock(&fe->dvb->mdev_lock); <------>if (fe->dvb->mdev) { <------><------>mutex_lock(&fe->dvb->mdev->graph_mutex); <------><------>if (fe->dvb->mdev->disable_source) <------><------><------>fe->dvb->mdev->disable_source(dvbdev->entity); <------><------>mutex_unlock(&fe->dvb->mdev->graph_mutex); <------>} <------>mutex_unlock(&fe->dvb->mdev_lock); err2: #endif <------>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); #ifdef CONFIG_MEDIA_CONTROLLER_DVB <------><------>mutex_lock(&fe->dvb->mdev_lock); <------><------>if (fe->dvb->mdev) { <------><------><------>mutex_lock(&fe->dvb->mdev->graph_mutex); <------><------><------>if (fe->dvb->mdev->disable_source) <------><------><------><------>fe->dvb->mdev->disable_source(dvbdev->entity); <------><------><------>mutex_unlock(&fe->dvb->mdev->graph_mutex); <------><------>} <------><------>mutex_unlock(&fe->dvb->mdev_lock); #endif <------><------>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); <------>} <------>dvb_frontend_put(fe); <------>return ret; } static const struct file_operations dvb_frontend_fops = { <------>.owner = THIS_MODULE, <------>.unlocked_ioctl = dvb_frontend_ioctl, #ifdef CONFIG_COMPAT <------>.compat_ioctl = dvb_frontend_compat_ioctl, #endif <------>.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); <------>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); <------>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 <------>}; <------>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) { <------><------>mutex_unlock(&frontend_mutex); <------><------>return -ENOMEM; <------>} <------>fepriv = fe->frontend_priv; <------>kref_init(&fe->refcount); <------>/* <------> * After initialization, there need to be two references: one <------> * for dvb_unregister_frontend(), and another one for <------> * dvb_frontend_detach(). <------> */ <------>dvb_frontend_get(fe); <------>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, 0); <------>/* <------> * 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); <------>dvb_remove_device(fepriv->dvbdev); <------>/* fe is invalid now */ <------>mutex_unlock(&frontend_mutex); <------>dvb_frontend_put(fe); <------>return 0; } EXPORT_SYMBOL(dvb_unregister_frontend); static void dvb_frontend_invoke_release(struct dvb_frontend *fe, <------><------><------><------><------>void (*release)(struct dvb_frontend *fe)) { <------>if (release) { <------><------>release(fe); #ifdef CONFIG_MEDIA_ATTACH <------><------>dvb_detach(release); #endif <------>} } void dvb_frontend_detach(struct dvb_frontend *fe) { <------>dvb_frontend_invoke_release(fe, fe->ops.release_sec); <------>dvb_frontend_invoke_release(fe, fe->ops.tuner_ops.release); <------>dvb_frontend_invoke_release(fe, fe->ops.analog_ops.release); <------>dvb_frontend_put(fe); } EXPORT_SYMBOL(dvb_frontend_detach);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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