![Mauro Carvalho Chehab](/assets/img/avatar_default.png)
As reported by smatch: drivers/media/dvb-core/dvb_frontend.c:1960:45: warning: incorrect type in argument 2 (different address spaces) drivers/media/dvb-core/dvb_frontend.c:1960:45: expected void const [noderef] <asn:1>*from drivers/media/dvb-core/dvb_frontend.c:1960:45: got struct dtv_property *[noderef] <asn:1>props drivers/media/dvb-core/dvb_frontend.c:1992:45: warning: incorrect type in argument 2 (different address spaces) drivers/media/dvb-core/dvb_frontend.c:1992:45: expected void const [noderef] <asn:1>*from drivers/media/dvb-core/dvb_frontend.c:1992:45: got struct dtv_property *[noderef] <asn:1>props drivers/media/dvb-core/dvb_frontend.c:2014:38: warning: incorrect type in argument 1 (different address spaces) drivers/media/dvb-core/dvb_frontend.c:2014:38: expected void [noderef] <asn:1>*to drivers/media/dvb-core/dvb_frontend.c:2014:38: got struct dtv_property *[noderef] <asn:1>props drivers/media/dvb-core/dvb_frontend.c:1946:17: warning: dereference of noderef expression drivers/media/dvb-core/dvb_frontend.c:1947:17: warning: dereference of noderef expression drivers/media/dvb-core/dvb_frontend.c:1951:22: warning: dereference of noderef expression drivers/media/dvb-core/dvb_frontend.c:1951:42: warning: dereference of noderef expression drivers/media/dvb-core/dvb_frontend.c:1954:31: warning: dereference of noderef expression drivers/media/dvb-core/dvb_frontend.c:1960:41: warning: dereference of noderef expression drivers/media/dvb-core/dvb_frontend.c:1960:54: warning: dereference of noderef expression drivers/media/dvb-core/dvb_frontend.c:1965:33: warning: dereference of noderef expression drivers/media/dvb-core/dvb_frontend.c:1978:17: warning: dereference of noderef expression drivers/media/dvb-core/dvb_frontend.c:1979:17: warning: dereference of noderef expression drivers/media/dvb-core/dvb_frontend.c:1983:22: warning: dereference of noderef expression drivers/media/dvb-core/dvb_frontend.c:1983:42: warning: dereference of noderef expression drivers/media/dvb-core/dvb_frontend.c:1986:31: warning: dereference of noderef expression drivers/media/dvb-core/dvb_frontend.c:1992:41: warning: dereference of noderef expression drivers/media/dvb-core/dvb_frontend.c:1992:54: warning: dereference of noderef expression drivers/media/dvb-core/dvb_frontend.c:2007:33: warning: dereference of noderef expression drivers/media/dvb-core/dvb_frontend.c:2014:34: warning: dereference of noderef expression drivers/media/dvb-core/dvb_frontend.c:2014:52: warning: dereference of noderef expression Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2716 lines
73 KiB
C
2716 lines
73 KiB
C
/*
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* dvb_frontend.c: DVB frontend tuning interface/thread
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*
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*
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* Copyright (C) 1999-2001 Ralph Metzler
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* Marcus Metzler
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* Holger Waechtler
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* for convergence integrated media GmbH
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*
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* Copyright (C) 2004 Andrew de Quincey (tuning thread cleanup)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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* Or, point your browser to http://www.gnu.org/copyleft/gpl.html
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*/
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/* Enables DVBv3 compatibility bits at the headers */
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#define __DVB_CORE__
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#include <linux/string.h>
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/wait.h>
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#include <linux/slab.h>
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#include <linux/poll.h>
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#include <linux/semaphore.h>
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#include <linux/module.h>
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#include <linux/list.h>
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#include <linux/freezer.h>
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#include <linux/jiffies.h>
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#include <linux/kthread.h>
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#include <asm/processor.h>
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#include "dvb_frontend.h"
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#include "dvbdev.h"
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#include <linux/dvb/version.h>
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static int dvb_frontend_debug;
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static int dvb_shutdown_timeout;
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static int dvb_force_auto_inversion;
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static int dvb_override_tune_delay;
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static int dvb_powerdown_on_sleep = 1;
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static int dvb_mfe_wait_time = 5;
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module_param_named(frontend_debug, dvb_frontend_debug, int, 0644);
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MODULE_PARM_DESC(frontend_debug, "Turn on/off frontend core debugging (default:off).");
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module_param(dvb_shutdown_timeout, int, 0644);
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MODULE_PARM_DESC(dvb_shutdown_timeout, "wait <shutdown_timeout> seconds after close() before suspending hardware");
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module_param(dvb_force_auto_inversion, int, 0644);
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MODULE_PARM_DESC(dvb_force_auto_inversion, "0: normal (default), 1: INVERSION_AUTO forced always");
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module_param(dvb_override_tune_delay, int, 0644);
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MODULE_PARM_DESC(dvb_override_tune_delay, "0: normal (default), >0 => delay in milliseconds to wait for lock after a tune attempt");
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module_param(dvb_powerdown_on_sleep, int, 0644);
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MODULE_PARM_DESC(dvb_powerdown_on_sleep, "0: do not power down, 1: turn LNB voltage off on sleep (default)");
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module_param(dvb_mfe_wait_time, int, 0644);
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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)");
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#define FESTATE_IDLE 1
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#define FESTATE_RETUNE 2
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#define FESTATE_TUNING_FAST 4
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#define FESTATE_TUNING_SLOW 8
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#define FESTATE_TUNED 16
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#define FESTATE_ZIGZAG_FAST 32
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#define FESTATE_ZIGZAG_SLOW 64
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#define FESTATE_DISEQC 128
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#define FESTATE_ERROR 256
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#define FESTATE_WAITFORLOCK (FESTATE_TUNING_FAST | FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW | FESTATE_DISEQC)
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#define FESTATE_SEARCHING_FAST (FESTATE_TUNING_FAST | FESTATE_ZIGZAG_FAST)
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#define FESTATE_SEARCHING_SLOW (FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_SLOW)
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#define FESTATE_LOSTLOCK (FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW)
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#define FE_ALGO_HW 1
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/*
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* FESTATE_IDLE. No tuning parameters have been supplied and the loop is idling.
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* FESTATE_RETUNE. Parameters have been supplied, but we have not yet performed the first tune.
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* FESTATE_TUNING_FAST. Tuning parameters have been supplied and fast zigzag scan is in progress.
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* FESTATE_TUNING_SLOW. Tuning parameters have been supplied. Fast zigzag failed, so we're trying again, but slower.
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* FESTATE_TUNED. The frontend has successfully locked on.
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* FESTATE_ZIGZAG_FAST. The lock has been lost, and a fast zigzag has been initiated to try and regain it.
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* FESTATE_ZIGZAG_SLOW. The lock has been lost. Fast zigzag has been failed, so we're trying again, but slower.
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* FESTATE_DISEQC. A DISEQC command has just been issued.
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* FESTATE_WAITFORLOCK. When we're waiting for a lock.
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* FESTATE_SEARCHING_FAST. When we're searching for a signal using a fast zigzag scan.
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* FESTATE_SEARCHING_SLOW. When we're searching for a signal using a slow zigzag scan.
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* FESTATE_LOSTLOCK. When the lock has been lost, and we're searching it again.
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*/
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static DEFINE_MUTEX(frontend_mutex);
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struct dvb_frontend_private {
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/* thread/frontend values */
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struct dvb_device *dvbdev;
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struct dvb_frontend_parameters parameters_out;
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struct dvb_fe_events events;
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struct semaphore sem;
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struct list_head list_head;
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wait_queue_head_t wait_queue;
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struct task_struct *thread;
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unsigned long release_jiffies;
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unsigned int wakeup;
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fe_status_t status;
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unsigned long tune_mode_flags;
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unsigned int delay;
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unsigned int reinitialise;
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int tone;
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int voltage;
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/* swzigzag values */
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unsigned int state;
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unsigned int bending;
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int lnb_drift;
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unsigned int inversion;
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unsigned int auto_step;
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unsigned int auto_sub_step;
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unsigned int started_auto_step;
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unsigned int min_delay;
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unsigned int max_drift;
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unsigned int step_size;
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int quality;
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unsigned int check_wrapped;
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enum dvbfe_search algo_status;
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};
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static void dvb_frontend_wakeup(struct dvb_frontend *fe);
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static int dtv_get_frontend(struct dvb_frontend *fe,
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struct dvb_frontend_parameters *p_out);
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static int dtv_property_legacy_params_sync(struct dvb_frontend *fe,
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struct dvb_frontend_parameters *p);
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static bool has_get_frontend(struct dvb_frontend *fe)
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{
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return fe->ops.get_frontend != NULL;
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}
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/*
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* Due to DVBv3 API calls, a delivery system should be mapped into one of
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* the 4 DVBv3 delivery systems (FE_QPSK, FE_QAM, FE_OFDM or FE_ATSC),
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* otherwise, a DVBv3 call will fail.
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*/
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enum dvbv3_emulation_type {
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DVBV3_UNKNOWN,
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DVBV3_QPSK,
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DVBV3_QAM,
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DVBV3_OFDM,
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DVBV3_ATSC,
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};
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static enum dvbv3_emulation_type dvbv3_type(u32 delivery_system)
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{
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switch (delivery_system) {
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case SYS_DVBC_ANNEX_A:
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case SYS_DVBC_ANNEX_C:
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return DVBV3_QAM;
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case SYS_DVBS:
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case SYS_DVBS2:
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case SYS_TURBO:
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case SYS_ISDBS:
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case SYS_DSS:
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return DVBV3_QPSK;
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case SYS_DVBT:
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case SYS_DVBT2:
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case SYS_ISDBT:
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case SYS_DTMB:
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return DVBV3_OFDM;
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case SYS_ATSC:
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case SYS_ATSCMH:
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case SYS_DVBC_ANNEX_B:
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return DVBV3_ATSC;
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case SYS_UNDEFINED:
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case SYS_ISDBC:
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case SYS_DVBH:
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case SYS_DAB:
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default:
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/*
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* Doesn't know how to emulate those types and/or
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* there's no frontend driver from this type yet
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* with some emulation code, so, we're not sure yet how
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* to handle them, or they're not compatible with a DVBv3 call.
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*/
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return DVBV3_UNKNOWN;
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}
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}
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static void dvb_frontend_add_event(struct dvb_frontend *fe, fe_status_t status)
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{
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struct dvb_frontend_private *fepriv = fe->frontend_priv;
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struct dvb_fe_events *events = &fepriv->events;
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struct dvb_frontend_event *e;
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int wp;
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dev_dbg(fe->dvb->device, "%s:\n", __func__);
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if ((status & FE_HAS_LOCK) && has_get_frontend(fe))
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dtv_get_frontend(fe, &fepriv->parameters_out);
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mutex_lock(&events->mtx);
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wp = (events->eventw + 1) % MAX_EVENT;
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if (wp == events->eventr) {
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events->overflow = 1;
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events->eventr = (events->eventr + 1) % MAX_EVENT;
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}
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e = &events->events[events->eventw];
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e->status = status;
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e->parameters = fepriv->parameters_out;
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events->eventw = wp;
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mutex_unlock(&events->mtx);
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wake_up_interruptible (&events->wait_queue);
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}
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static int dvb_frontend_get_event(struct dvb_frontend *fe,
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struct dvb_frontend_event *event, int flags)
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{
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struct dvb_frontend_private *fepriv = fe->frontend_priv;
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struct dvb_fe_events *events = &fepriv->events;
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dev_dbg(fe->dvb->device, "%s:\n", __func__);
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if (events->overflow) {
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events->overflow = 0;
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return -EOVERFLOW;
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}
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if (events->eventw == events->eventr) {
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int ret;
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if (flags & O_NONBLOCK)
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return -EWOULDBLOCK;
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up(&fepriv->sem);
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ret = wait_event_interruptible (events->wait_queue,
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events->eventw != events->eventr);
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if (down_interruptible (&fepriv->sem))
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return -ERESTARTSYS;
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if (ret < 0)
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return ret;
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}
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mutex_lock(&events->mtx);
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*event = events->events[events->eventr];
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events->eventr = (events->eventr + 1) % MAX_EVENT;
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mutex_unlock(&events->mtx);
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return 0;
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}
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static void dvb_frontend_clear_events(struct dvb_frontend *fe)
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{
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struct dvb_frontend_private *fepriv = fe->frontend_priv;
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struct dvb_fe_events *events = &fepriv->events;
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mutex_lock(&events->mtx);
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events->eventr = events->eventw;
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mutex_unlock(&events->mtx);
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}
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static void dvb_frontend_init(struct dvb_frontend *fe)
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{
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dev_dbg(fe->dvb->device,
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"%s: initialising adapter %i frontend %i (%s)...\n",
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__func__, fe->dvb->num, fe->id, fe->ops.info.name);
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if (fe->ops.init)
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fe->ops.init(fe);
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if (fe->ops.tuner_ops.init) {
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if (fe->ops.i2c_gate_ctrl)
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fe->ops.i2c_gate_ctrl(fe, 1);
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fe->ops.tuner_ops.init(fe);
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if (fe->ops.i2c_gate_ctrl)
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fe->ops.i2c_gate_ctrl(fe, 0);
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}
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}
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void dvb_frontend_reinitialise(struct dvb_frontend *fe)
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{
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struct dvb_frontend_private *fepriv = fe->frontend_priv;
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fepriv->reinitialise = 1;
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dvb_frontend_wakeup(fe);
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}
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EXPORT_SYMBOL(dvb_frontend_reinitialise);
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static void dvb_frontend_swzigzag_update_delay(struct dvb_frontend_private *fepriv, int locked)
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{
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int q2;
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struct dvb_frontend *fe = fepriv->dvbdev->priv;
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dev_dbg(fe->dvb->device, "%s:\n", __func__);
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if (locked)
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(fepriv->quality) = (fepriv->quality * 220 + 36*256) / 256;
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else
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(fepriv->quality) = (fepriv->quality * 220 + 0) / 256;
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q2 = fepriv->quality - 128;
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q2 *= q2;
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fepriv->delay = fepriv->min_delay + q2 * HZ / (128*128);
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}
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/**
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* Performs automatic twiddling of frontend parameters.
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*
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* @param fe The frontend concerned.
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* @param check_wrapped Checks if an iteration has completed. DO NOT SET ON THE FIRST ATTEMPT
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* @returns Number of complete iterations that have been performed.
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*/
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static int dvb_frontend_swzigzag_autotune(struct dvb_frontend *fe, int check_wrapped)
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{
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int autoinversion;
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int ready = 0;
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int fe_set_err = 0;
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struct dvb_frontend_private *fepriv = fe->frontend_priv;
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struct dtv_frontend_properties *c = &fe->dtv_property_cache, tmp;
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int original_inversion = c->inversion;
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u32 original_frequency = c->frequency;
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/* are we using autoinversion? */
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autoinversion = ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) &&
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(c->inversion == INVERSION_AUTO));
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/* setup parameters correctly */
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while(!ready) {
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/* calculate the lnb_drift */
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fepriv->lnb_drift = fepriv->auto_step * fepriv->step_size;
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/* wrap the auto_step if we've exceeded the maximum drift */
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if (fepriv->lnb_drift > fepriv->max_drift) {
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fepriv->auto_step = 0;
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fepriv->auto_sub_step = 0;
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fepriv->lnb_drift = 0;
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}
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/* perform inversion and +/- zigzag */
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switch(fepriv->auto_sub_step) {
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case 0:
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/* try with the current inversion and current drift setting */
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ready = 1;
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break;
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case 1:
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if (!autoinversion) break;
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fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF;
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ready = 1;
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break;
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case 2:
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if (fepriv->lnb_drift == 0) break;
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fepriv->lnb_drift = -fepriv->lnb_drift;
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ready = 1;
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break;
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case 3:
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if (fepriv->lnb_drift == 0) break;
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if (!autoinversion) break;
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fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF;
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fepriv->lnb_drift = -fepriv->lnb_drift;
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ready = 1;
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break;
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default:
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fepriv->auto_step++;
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fepriv->auto_sub_step = -1; /* it'll be incremented to 0 in a moment */
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break;
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}
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if (!ready) fepriv->auto_sub_step++;
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}
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/* if this attempt would hit where we started, indicate a complete
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* iteration has occurred */
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if ((fepriv->auto_step == fepriv->started_auto_step) &&
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(fepriv->auto_sub_step == 0) && check_wrapped) {
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return 1;
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}
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dev_dbg(fe->dvb->device, "%s: drift:%i inversion:%i auto_step:%i " \
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"auto_sub_step:%i started_auto_step:%i\n",
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__func__, fepriv->lnb_drift, fepriv->inversion,
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fepriv->auto_step, fepriv->auto_sub_step,
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fepriv->started_auto_step);
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/* set the frontend itself */
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c->frequency += fepriv->lnb_drift;
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if (autoinversion)
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c->inversion = fepriv->inversion;
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tmp = *c;
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if (fe->ops.set_frontend)
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fe_set_err = fe->ops.set_frontend(fe);
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*c = tmp;
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if (fe_set_err < 0) {
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fepriv->state = FESTATE_ERROR;
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return fe_set_err;
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}
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c->frequency = original_frequency;
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c->inversion = original_inversion;
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fepriv->auto_sub_step++;
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return 0;
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}
|
|
|
|
static void dvb_frontend_swzigzag(struct dvb_frontend *fe)
|
|
{
|
|
fe_status_t s = 0;
|
|
int retval = 0;
|
|
struct dvb_frontend_private *fepriv = fe->frontend_priv;
|
|
struct dtv_frontend_properties *c = &fe->dtv_property_cache, tmp;
|
|
|
|
/* if we've got no parameters, just keep idling */
|
|
if (fepriv->state & FESTATE_IDLE) {
|
|
fepriv->delay = 3*HZ;
|
|
fepriv->quality = 0;
|
|
return;
|
|
}
|
|
|
|
/* in SCAN mode, we just set the frontend when asked and leave it alone */
|
|
if (fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT) {
|
|
if (fepriv->state & FESTATE_RETUNE) {
|
|
tmp = *c;
|
|
if (fe->ops.set_frontend)
|
|
retval = fe->ops.set_frontend(fe);
|
|
*c = tmp;
|
|
if (retval < 0)
|
|
fepriv->state = FESTATE_ERROR;
|
|
else
|
|
fepriv->state = FESTATE_TUNED;
|
|
}
|
|
fepriv->delay = 3*HZ;
|
|
fepriv->quality = 0;
|
|
return;
|
|
}
|
|
|
|
/* get the frontend status */
|
|
if (fepriv->state & FESTATE_RETUNE) {
|
|
s = 0;
|
|
} else {
|
|
if (fe->ops.read_status)
|
|
fe->ops.read_status(fe, &s);
|
|
if (s != fepriv->status) {
|
|
dvb_frontend_add_event(fe, s);
|
|
fepriv->status = s;
|
|
}
|
|
}
|
|
|
|
/* if we're not tuned, and we have a lock, move to the TUNED state */
|
|
if ((fepriv->state & FESTATE_WAITFORLOCK) && (s & FE_HAS_LOCK)) {
|
|
dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
|
|
fepriv->state = FESTATE_TUNED;
|
|
|
|
/* if we're tuned, then we have determined the correct inversion */
|
|
if ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) &&
|
|
(c->inversion == INVERSION_AUTO)) {
|
|
c->inversion = fepriv->inversion;
|
|
}
|
|
return;
|
|
}
|
|
|
|
/* if we are tuned already, check we're still locked */
|
|
if (fepriv->state & FESTATE_TUNED) {
|
|
dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
|
|
|
|
/* we're tuned, and the lock is still good... */
|
|
if (s & FE_HAS_LOCK) {
|
|
return;
|
|
} else { /* if we _WERE_ tuned, but now don't have a lock */
|
|
fepriv->state = FESTATE_ZIGZAG_FAST;
|
|
fepriv->started_auto_step = fepriv->auto_step;
|
|
fepriv->check_wrapped = 0;
|
|
}
|
|
}
|
|
|
|
/* don't actually do anything if we're in the LOSTLOCK state,
|
|
* the frontend is set to FE_CAN_RECOVER, and the max_drift is 0 */
|
|
if ((fepriv->state & FESTATE_LOSTLOCK) &&
|
|
(fe->ops.info.caps & FE_CAN_RECOVER) && (fepriv->max_drift == 0)) {
|
|
dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
|
|
return;
|
|
}
|
|
|
|
/* don't do anything if we're in the DISEQC state, since this
|
|
* might be someone with a motorized dish controlled by DISEQC.
|
|
* If its actually a re-tune, there will be a SET_FRONTEND soon enough. */
|
|
if (fepriv->state & FESTATE_DISEQC) {
|
|
dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
|
|
return;
|
|
}
|
|
|
|
/* if we're in the RETUNE state, set everything up for a brand
|
|
* new scan, keeping the current inversion setting, as the next
|
|
* tune is _very_ likely to require the same */
|
|
if (fepriv->state & FESTATE_RETUNE) {
|
|
fepriv->lnb_drift = 0;
|
|
fepriv->auto_step = 0;
|
|
fepriv->auto_sub_step = 0;
|
|
fepriv->started_auto_step = 0;
|
|
fepriv->check_wrapped = 0;
|
|
}
|
|
|
|
/* fast zigzag. */
|
|
if ((fepriv->state & FESTATE_SEARCHING_FAST) || (fepriv->state & FESTATE_RETUNE)) {
|
|
fepriv->delay = fepriv->min_delay;
|
|
|
|
/* perform a tune */
|
|
retval = dvb_frontend_swzigzag_autotune(fe,
|
|
fepriv->check_wrapped);
|
|
if (retval < 0) {
|
|
return;
|
|
} else if (retval) {
|
|
/* OK, if we've run out of trials at the fast speed.
|
|
* Drop back to slow for the _next_ attempt */
|
|
fepriv->state = FESTATE_SEARCHING_SLOW;
|
|
fepriv->started_auto_step = fepriv->auto_step;
|
|
return;
|
|
}
|
|
fepriv->check_wrapped = 1;
|
|
|
|
/* if we've just retuned, enter the ZIGZAG_FAST state.
|
|
* This ensures we cannot return from an
|
|
* FE_SET_FRONTEND ioctl before the first frontend tune
|
|
* occurs */
|
|
if (fepriv->state & FESTATE_RETUNE) {
|
|
fepriv->state = FESTATE_TUNING_FAST;
|
|
}
|
|
}
|
|
|
|
/* slow zigzag */
|
|
if (fepriv->state & FESTATE_SEARCHING_SLOW) {
|
|
dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
|
|
|
|
/* Note: don't bother checking for wrapping; we stay in this
|
|
* state until we get a lock */
|
|
dvb_frontend_swzigzag_autotune(fe, 0);
|
|
}
|
|
}
|
|
|
|
static int dvb_frontend_is_exiting(struct dvb_frontend *fe)
|
|
{
|
|
struct dvb_frontend_private *fepriv = fe->frontend_priv;
|
|
|
|
if (fe->exit != DVB_FE_NO_EXIT)
|
|
return 1;
|
|
|
|
if (fepriv->dvbdev->writers == 1)
|
|
if (time_after_eq(jiffies, fepriv->release_jiffies +
|
|
dvb_shutdown_timeout * HZ))
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dvb_frontend_should_wakeup(struct dvb_frontend *fe)
|
|
{
|
|
struct dvb_frontend_private *fepriv = fe->frontend_priv;
|
|
|
|
if (fepriv->wakeup) {
|
|
fepriv->wakeup = 0;
|
|
return 1;
|
|
}
|
|
return dvb_frontend_is_exiting(fe);
|
|
}
|
|
|
|
static void dvb_frontend_wakeup(struct dvb_frontend *fe)
|
|
{
|
|
struct dvb_frontend_private *fepriv = fe->frontend_priv;
|
|
|
|
fepriv->wakeup = 1;
|
|
wake_up_interruptible(&fepriv->wait_queue);
|
|
}
|
|
|
|
static int dvb_frontend_thread(void *data)
|
|
{
|
|
struct dvb_frontend *fe = data;
|
|
struct dvb_frontend_private *fepriv = fe->frontend_priv;
|
|
fe_status_t s;
|
|
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, &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);
|
|
}
|
|
|
|
s32 timeval_usec_diff(struct timeval lasttime, struct timeval curtime)
|
|
{
|
|
return ((curtime.tv_usec < lasttime.tv_usec) ?
|
|
1000000 - lasttime.tv_usec + curtime.tv_usec :
|
|
curtime.tv_usec - lasttime.tv_usec);
|
|
}
|
|
EXPORT_SYMBOL(timeval_usec_diff);
|
|
|
|
static inline void timeval_usec_add(struct timeval *curtime, u32 add_usec)
|
|
{
|
|
curtime->tv_usec += add_usec;
|
|
if (curtime->tv_usec >= 1000000) {
|
|
curtime->tv_usec -= 1000000;
|
|
curtime->tv_sec++;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Sleep until gettimeofday() > waketime + add_usec
|
|
* This needs to be as precise as possible, but as the delay is
|
|
* usually between 2ms and 32ms, it is done using a scheduled msleep
|
|
* followed by usleep (normally a busy-wait loop) for the remainder
|
|
*/
|
|
void dvb_frontend_sleep_until(struct timeval *waketime, u32 add_usec)
|
|
{
|
|
struct timeval lasttime;
|
|
s32 delta, newdelta;
|
|
|
|
timeval_usec_add(waketime, add_usec);
|
|
|
|
do_gettimeofday(&lasttime);
|
|
delta = timeval_usec_diff(lasttime, *waketime);
|
|
if (delta > 2500) {
|
|
msleep((delta - 1500) / 1000);
|
|
do_gettimeofday(&lasttime);
|
|
newdelta = timeval_usec_diff(lasttime, *waketime);
|
|
delta = (newdelta > delta) ? 0 : newdelta;
|
|
}
|
|
if (delta > 0)
|
|
udelay(delta);
|
|
}
|
|
EXPORT_SYMBOL(dvb_frontend_sleep_until);
|
|
|
|
static int dvb_frontend_start(struct dvb_frontend *fe)
|
|
{
|
|
int ret;
|
|
struct dvb_frontend_private *fepriv = fe->frontend_priv;
|
|
struct task_struct *fe_thread;
|
|
|
|
dev_dbg(fe->dvb->device, "%s:\n", __func__);
|
|
|
|
if (fepriv->thread) {
|
|
if (fe->exit == DVB_FE_NO_EXIT)
|
|
return 0;
|
|
else
|
|
dvb_frontend_stop (fe);
|
|
}
|
|
|
|
if (signal_pending(current))
|
|
return -EINTR;
|
|
if (down_interruptible (&fepriv->sem))
|
|
return -EINTR;
|
|
|
|
fepriv->state = FESTATE_IDLE;
|
|
fe->exit = DVB_FE_NO_EXIT;
|
|
fepriv->thread = NULL;
|
|
mb();
|
|
|
|
fe_thread = kthread_run(dvb_frontend_thread, fe,
|
|
"kdvb-ad-%i-fe-%i", fe->dvb->num,fe->id);
|
|
if (IS_ERR(fe_thread)) {
|
|
ret = PTR_ERR(fe_thread);
|
|
dev_warn(fe->dvb->device,
|
|
"dvb_frontend_start: failed to start kthread (%d)\n",
|
|
ret);
|
|
up(&fepriv->sem);
|
|
return ret;
|
|
}
|
|
fepriv->thread = fe_thread;
|
|
return 0;
|
|
}
|
|
|
|
static void dvb_frontend_get_frequency_limits(struct dvb_frontend *fe,
|
|
u32 *freq_min, u32 *freq_max)
|
|
{
|
|
*freq_min = max(fe->ops.info.frequency_min, fe->ops.tuner_ops.info.frequency_min);
|
|
|
|
if (fe->ops.info.frequency_max == 0)
|
|
*freq_max = fe->ops.tuner_ops.info.frequency_max;
|
|
else if (fe->ops.tuner_ops.info.frequency_max == 0)
|
|
*freq_max = fe->ops.info.frequency_max;
|
|
else
|
|
*freq_max = min(fe->ops.info.frequency_max, fe->ops.tuner_ops.info.frequency_max);
|
|
|
|
if (*freq_min == 0 || *freq_max == 0)
|
|
dev_warn(fe->dvb->device, "DVB: adapter %i frontend %u frequency limits undefined - fix the driver\n",
|
|
fe->dvb->num, fe->id);
|
|
}
|
|
|
|
static int dvb_frontend_check_parameters(struct dvb_frontend *fe)
|
|
{
|
|
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
|
|
u32 freq_min;
|
|
u32 freq_max;
|
|
|
|
/* range check: frequency */
|
|
dvb_frontend_get_frequency_limits(fe, &freq_min, &freq_max);
|
|
if ((freq_min && c->frequency < freq_min) ||
|
|
(freq_max && c->frequency > freq_max)) {
|
|
dev_warn(fe->dvb->device, "DVB: adapter %i frontend %i frequency %u out of range (%u..%u)\n",
|
|
fe->dvb->num, fe->id, c->frequency,
|
|
freq_min, freq_max);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* range check: symbol rate */
|
|
switch (c->delivery_system) {
|
|
case SYS_DVBS:
|
|
case SYS_DVBS2:
|
|
case SYS_TURBO:
|
|
case SYS_DVBC_ANNEX_A:
|
|
case SYS_DVBC_ANNEX_C:
|
|
if ((fe->ops.info.symbol_rate_min &&
|
|
c->symbol_rate < fe->ops.info.symbol_rate_min) ||
|
|
(fe->ops.info.symbol_rate_max &&
|
|
c->symbol_rate > fe->ops.info.symbol_rate_max)) {
|
|
dev_warn(fe->dvb->device, "DVB: adapter %i frontend %i symbol rate %u out of range (%u..%u)\n",
|
|
fe->dvb->num, fe->id, c->symbol_rate,
|
|
fe->ops.info.symbol_rate_min,
|
|
fe->ops.info.symbol_rate_max);
|
|
return -EINVAL;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dvb_frontend_clear_cache(struct dvb_frontend *fe)
|
|
{
|
|
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
|
|
int i;
|
|
u32 delsys;
|
|
|
|
delsys = c->delivery_system;
|
|
memset(c, 0, offsetof(struct dtv_frontend_properties, strength));
|
|
c->delivery_system = delsys;
|
|
|
|
c->state = DTV_CLEAR;
|
|
|
|
dev_dbg(fe->dvb->device, "%s: Clearing cache for delivery system %d\n",
|
|
__func__, c->delivery_system);
|
|
|
|
c->transmission_mode = TRANSMISSION_MODE_AUTO;
|
|
c->bandwidth_hz = 0; /* AUTO */
|
|
c->guard_interval = GUARD_INTERVAL_AUTO;
|
|
c->hierarchy = HIERARCHY_AUTO;
|
|
c->symbol_rate = 0;
|
|
c->code_rate_HP = FEC_AUTO;
|
|
c->code_rate_LP = FEC_AUTO;
|
|
c->fec_inner = FEC_AUTO;
|
|
c->rolloff = ROLLOFF_AUTO;
|
|
c->voltage = SEC_VOLTAGE_OFF;
|
|
c->sectone = SEC_TONE_OFF;
|
|
c->pilot = PILOT_AUTO;
|
|
|
|
c->isdbt_partial_reception = 0;
|
|
c->isdbt_sb_mode = 0;
|
|
c->isdbt_sb_subchannel = 0;
|
|
c->isdbt_sb_segment_idx = 0;
|
|
c->isdbt_sb_segment_count = 0;
|
|
c->isdbt_layer_enabled = 0;
|
|
for (i = 0; i < 3; i++) {
|
|
c->layer[i].fec = FEC_AUTO;
|
|
c->layer[i].modulation = QAM_AUTO;
|
|
c->layer[i].interleaving = 0;
|
|
c->layer[i].segment_count = 0;
|
|
}
|
|
|
|
c->stream_id = NO_STREAM_ID_FILTER;
|
|
|
|
switch (c->delivery_system) {
|
|
case SYS_DVBS:
|
|
case SYS_DVBS2:
|
|
case SYS_TURBO:
|
|
c->modulation = QPSK; /* implied for DVB-S in legacy API */
|
|
c->rolloff = ROLLOFF_35;/* implied for DVB-S */
|
|
break;
|
|
case SYS_ATSC:
|
|
c->modulation = VSB_8;
|
|
break;
|
|
default:
|
|
c->modulation = QAM_AUTO;
|
|
break;
|
|
}
|
|
|
|
c->lna = LNA_AUTO;
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define _DTV_CMD(n, s, b) \
|
|
[n] = { \
|
|
.name = #n, \
|
|
.cmd = n, \
|
|
.set = s,\
|
|
.buffer = b \
|
|
}
|
|
|
|
static struct dtv_cmds_h dtv_cmds[DTV_MAX_COMMAND + 1] = {
|
|
_DTV_CMD(DTV_TUNE, 1, 0),
|
|
_DTV_CMD(DTV_CLEAR, 1, 0),
|
|
|
|
/* Set */
|
|
_DTV_CMD(DTV_FREQUENCY, 1, 0),
|
|
_DTV_CMD(DTV_BANDWIDTH_HZ, 1, 0),
|
|
_DTV_CMD(DTV_MODULATION, 1, 0),
|
|
_DTV_CMD(DTV_INVERSION, 1, 0),
|
|
_DTV_CMD(DTV_DISEQC_MASTER, 1, 1),
|
|
_DTV_CMD(DTV_SYMBOL_RATE, 1, 0),
|
|
_DTV_CMD(DTV_INNER_FEC, 1, 0),
|
|
_DTV_CMD(DTV_VOLTAGE, 1, 0),
|
|
_DTV_CMD(DTV_TONE, 1, 0),
|
|
_DTV_CMD(DTV_PILOT, 1, 0),
|
|
_DTV_CMD(DTV_ROLLOFF, 1, 0),
|
|
_DTV_CMD(DTV_DELIVERY_SYSTEM, 1, 0),
|
|
_DTV_CMD(DTV_HIERARCHY, 1, 0),
|
|
_DTV_CMD(DTV_CODE_RATE_HP, 1, 0),
|
|
_DTV_CMD(DTV_CODE_RATE_LP, 1, 0),
|
|
_DTV_CMD(DTV_GUARD_INTERVAL, 1, 0),
|
|
_DTV_CMD(DTV_TRANSMISSION_MODE, 1, 0),
|
|
_DTV_CMD(DTV_INTERLEAVING, 1, 0),
|
|
|
|
_DTV_CMD(DTV_ISDBT_PARTIAL_RECEPTION, 1, 0),
|
|
_DTV_CMD(DTV_ISDBT_SOUND_BROADCASTING, 1, 0),
|
|
_DTV_CMD(DTV_ISDBT_SB_SUBCHANNEL_ID, 1, 0),
|
|
_DTV_CMD(DTV_ISDBT_SB_SEGMENT_IDX, 1, 0),
|
|
_DTV_CMD(DTV_ISDBT_SB_SEGMENT_COUNT, 1, 0),
|
|
_DTV_CMD(DTV_ISDBT_LAYER_ENABLED, 1, 0),
|
|
_DTV_CMD(DTV_ISDBT_LAYERA_FEC, 1, 0),
|
|
_DTV_CMD(DTV_ISDBT_LAYERA_MODULATION, 1, 0),
|
|
_DTV_CMD(DTV_ISDBT_LAYERA_SEGMENT_COUNT, 1, 0),
|
|
_DTV_CMD(DTV_ISDBT_LAYERA_TIME_INTERLEAVING, 1, 0),
|
|
_DTV_CMD(DTV_ISDBT_LAYERB_FEC, 1, 0),
|
|
_DTV_CMD(DTV_ISDBT_LAYERB_MODULATION, 1, 0),
|
|
_DTV_CMD(DTV_ISDBT_LAYERB_SEGMENT_COUNT, 1, 0),
|
|
_DTV_CMD(DTV_ISDBT_LAYERB_TIME_INTERLEAVING, 1, 0),
|
|
_DTV_CMD(DTV_ISDBT_LAYERC_FEC, 1, 0),
|
|
_DTV_CMD(DTV_ISDBT_LAYERC_MODULATION, 1, 0),
|
|
_DTV_CMD(DTV_ISDBT_LAYERC_SEGMENT_COUNT, 1, 0),
|
|
_DTV_CMD(DTV_ISDBT_LAYERC_TIME_INTERLEAVING, 1, 0),
|
|
|
|
_DTV_CMD(DTV_STREAM_ID, 1, 0),
|
|
_DTV_CMD(DTV_DVBT2_PLP_ID_LEGACY, 1, 0),
|
|
_DTV_CMD(DTV_LNA, 1, 0),
|
|
|
|
/* Get */
|
|
_DTV_CMD(DTV_DISEQC_SLAVE_REPLY, 0, 1),
|
|
_DTV_CMD(DTV_API_VERSION, 0, 0),
|
|
|
|
_DTV_CMD(DTV_ENUM_DELSYS, 0, 0),
|
|
|
|
_DTV_CMD(DTV_ATSCMH_PARADE_ID, 1, 0),
|
|
_DTV_CMD(DTV_ATSCMH_RS_FRAME_ENSEMBLE, 1, 0),
|
|
|
|
_DTV_CMD(DTV_ATSCMH_FIC_VER, 0, 0),
|
|
_DTV_CMD(DTV_ATSCMH_NOG, 0, 0),
|
|
_DTV_CMD(DTV_ATSCMH_TNOG, 0, 0),
|
|
_DTV_CMD(DTV_ATSCMH_SGN, 0, 0),
|
|
_DTV_CMD(DTV_ATSCMH_PRC, 0, 0),
|
|
_DTV_CMD(DTV_ATSCMH_RS_FRAME_MODE, 0, 0),
|
|
_DTV_CMD(DTV_ATSCMH_RS_CODE_MODE_PRI, 0, 0),
|
|
_DTV_CMD(DTV_ATSCMH_RS_CODE_MODE_SEC, 0, 0),
|
|
_DTV_CMD(DTV_ATSCMH_SCCC_BLOCK_MODE, 0, 0),
|
|
_DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_A, 0, 0),
|
|
_DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_B, 0, 0),
|
|
_DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_C, 0, 0),
|
|
_DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_D, 0, 0),
|
|
|
|
/* Statistics API */
|
|
_DTV_CMD(DTV_STAT_SIGNAL_STRENGTH, 0, 0),
|
|
_DTV_CMD(DTV_STAT_CNR, 0, 0),
|
|
_DTV_CMD(DTV_STAT_PRE_ERROR_BIT_COUNT, 0, 0),
|
|
_DTV_CMD(DTV_STAT_PRE_TOTAL_BIT_COUNT, 0, 0),
|
|
_DTV_CMD(DTV_STAT_POST_ERROR_BIT_COUNT, 0, 0),
|
|
_DTV_CMD(DTV_STAT_POST_TOTAL_BIT_COUNT, 0, 0),
|
|
_DTV_CMD(DTV_STAT_ERROR_BLOCK_COUNT, 0, 0),
|
|
_DTV_CMD(DTV_STAT_TOTAL_BLOCK_COUNT, 0, 0),
|
|
};
|
|
|
|
static void dtv_property_dump(struct dvb_frontend *fe, struct dtv_property *tvp)
|
|
{
|
|
int i;
|
|
|
|
if (tvp->cmd <= 0 || tvp->cmd > DTV_MAX_COMMAND) {
|
|
dev_warn(fe->dvb->device, "%s: tvp.cmd = 0x%08x undefined\n",
|
|
__func__, tvp->cmd);
|
|
return;
|
|
}
|
|
|
|
dev_dbg(fe->dvb->device, "%s: tvp.cmd = 0x%08x (%s)\n", __func__,
|
|
tvp->cmd, dtv_cmds[tvp->cmd].name);
|
|
|
|
if (dtv_cmds[tvp->cmd].buffer) {
|
|
dev_dbg(fe->dvb->device, "%s: tvp.u.buffer.len = 0x%02x\n",
|
|
__func__, tvp->u.buffer.len);
|
|
|
|
for(i = 0; i < tvp->u.buffer.len; i++)
|
|
dev_dbg(fe->dvb->device,
|
|
"%s: tvp.u.buffer.data[0x%02x] = 0x%02x\n",
|
|
__func__, i, tvp->u.buffer.data[i]);
|
|
} else {
|
|
dev_dbg(fe->dvb->device, "%s: tvp.u.data = 0x%08x\n", __func__,
|
|
tvp->u.data);
|
|
}
|
|
}
|
|
|
|
/* Synchronise the legacy tuning parameters into the cache, so that demodulator
|
|
* drivers can use a single set_frontend tuning function, regardless of whether
|
|
* it's being used for the legacy or new API, reducing code and complexity.
|
|
*/
|
|
static int dtv_property_cache_sync(struct dvb_frontend *fe,
|
|
struct dtv_frontend_properties *c,
|
|
const struct dvb_frontend_parameters *p)
|
|
{
|
|
c->frequency = p->frequency;
|
|
c->inversion = p->inversion;
|
|
|
|
switch (dvbv3_type(c->delivery_system)) {
|
|
case DVBV3_QPSK:
|
|
dev_dbg(fe->dvb->device, "%s: Preparing QPSK req\n", __func__);
|
|
c->symbol_rate = p->u.qpsk.symbol_rate;
|
|
c->fec_inner = p->u.qpsk.fec_inner;
|
|
break;
|
|
case DVBV3_QAM:
|
|
dev_dbg(fe->dvb->device, "%s: Preparing QAM req\n", __func__);
|
|
c->symbol_rate = p->u.qam.symbol_rate;
|
|
c->fec_inner = p->u.qam.fec_inner;
|
|
c->modulation = p->u.qam.modulation;
|
|
break;
|
|
case DVBV3_OFDM:
|
|
dev_dbg(fe->dvb->device, "%s: Preparing OFDM req\n", __func__);
|
|
|
|
switch (p->u.ofdm.bandwidth) {
|
|
case BANDWIDTH_10_MHZ:
|
|
c->bandwidth_hz = 10000000;
|
|
break;
|
|
case BANDWIDTH_8_MHZ:
|
|
c->bandwidth_hz = 8000000;
|
|
break;
|
|
case BANDWIDTH_7_MHZ:
|
|
c->bandwidth_hz = 7000000;
|
|
break;
|
|
case BANDWIDTH_6_MHZ:
|
|
c->bandwidth_hz = 6000000;
|
|
break;
|
|
case BANDWIDTH_5_MHZ:
|
|
c->bandwidth_hz = 5000000;
|
|
break;
|
|
case BANDWIDTH_1_712_MHZ:
|
|
c->bandwidth_hz = 1712000;
|
|
break;
|
|
case BANDWIDTH_AUTO:
|
|
c->bandwidth_hz = 0;
|
|
}
|
|
|
|
c->code_rate_HP = p->u.ofdm.code_rate_HP;
|
|
c->code_rate_LP = p->u.ofdm.code_rate_LP;
|
|
c->modulation = p->u.ofdm.constellation;
|
|
c->transmission_mode = p->u.ofdm.transmission_mode;
|
|
c->guard_interval = p->u.ofdm.guard_interval;
|
|
c->hierarchy = p->u.ofdm.hierarchy_information;
|
|
break;
|
|
case DVBV3_ATSC:
|
|
dev_dbg(fe->dvb->device, "%s: Preparing ATSC req\n", __func__);
|
|
c->modulation = p->u.vsb.modulation;
|
|
if (c->delivery_system == SYS_ATSCMH)
|
|
break;
|
|
if ((c->modulation == VSB_8) || (c->modulation == VSB_16))
|
|
c->delivery_system = SYS_ATSC;
|
|
else
|
|
c->delivery_system = SYS_DVBC_ANNEX_B;
|
|
break;
|
|
case DVBV3_UNKNOWN:
|
|
dev_err(fe->dvb->device,
|
|
"%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
|
|
__func__, c->delivery_system);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Ensure the cached values are set correctly in the frontend
|
|
* legacy tuning structures, for the advanced tuning API.
|
|
*/
|
|
static int dtv_property_legacy_params_sync(struct dvb_frontend *fe,
|
|
struct dvb_frontend_parameters *p)
|
|
{
|
|
const struct dtv_frontend_properties *c = &fe->dtv_property_cache;
|
|
|
|
p->frequency = c->frequency;
|
|
p->inversion = c->inversion;
|
|
|
|
switch (dvbv3_type(c->delivery_system)) {
|
|
case DVBV3_UNKNOWN:
|
|
dev_err(fe->dvb->device,
|
|
"%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
|
|
__func__, c->delivery_system);
|
|
return -EINVAL;
|
|
case DVBV3_QPSK:
|
|
dev_dbg(fe->dvb->device, "%s: Preparing QPSK req\n", __func__);
|
|
p->u.qpsk.symbol_rate = c->symbol_rate;
|
|
p->u.qpsk.fec_inner = c->fec_inner;
|
|
break;
|
|
case DVBV3_QAM:
|
|
dev_dbg(fe->dvb->device, "%s: Preparing QAM req\n", __func__);
|
|
p->u.qam.symbol_rate = c->symbol_rate;
|
|
p->u.qam.fec_inner = c->fec_inner;
|
|
p->u.qam.modulation = c->modulation;
|
|
break;
|
|
case DVBV3_OFDM:
|
|
dev_dbg(fe->dvb->device, "%s: Preparing OFDM req\n", __func__);
|
|
switch (c->bandwidth_hz) {
|
|
case 10000000:
|
|
p->u.ofdm.bandwidth = BANDWIDTH_10_MHZ;
|
|
break;
|
|
case 8000000:
|
|
p->u.ofdm.bandwidth = BANDWIDTH_8_MHZ;
|
|
break;
|
|
case 7000000:
|
|
p->u.ofdm.bandwidth = BANDWIDTH_7_MHZ;
|
|
break;
|
|
case 6000000:
|
|
p->u.ofdm.bandwidth = BANDWIDTH_6_MHZ;
|
|
break;
|
|
case 5000000:
|
|
p->u.ofdm.bandwidth = BANDWIDTH_5_MHZ;
|
|
break;
|
|
case 1712000:
|
|
p->u.ofdm.bandwidth = BANDWIDTH_1_712_MHZ;
|
|
break;
|
|
case 0:
|
|
default:
|
|
p->u.ofdm.bandwidth = BANDWIDTH_AUTO;
|
|
}
|
|
p->u.ofdm.code_rate_HP = c->code_rate_HP;
|
|
p->u.ofdm.code_rate_LP = c->code_rate_LP;
|
|
p->u.ofdm.constellation = c->modulation;
|
|
p->u.ofdm.transmission_mode = c->transmission_mode;
|
|
p->u.ofdm.guard_interval = c->guard_interval;
|
|
p->u.ofdm.hierarchy_information = c->hierarchy;
|
|
break;
|
|
case DVBV3_ATSC:
|
|
dev_dbg(fe->dvb->device, "%s: Preparing VSB req\n", __func__);
|
|
p->u.vsb.modulation = c->modulation;
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* dtv_get_frontend - calls a callback for retrieving DTV parameters
|
|
* @fe: struct dvb_frontend pointer
|
|
* @c: struct dtv_frontend_properties pointer (DVBv5 cache)
|
|
* @p_out struct dvb_frontend_parameters pointer (DVBv3 FE struct)
|
|
*
|
|
* This routine calls either the DVBv3 or DVBv5 get_frontend call.
|
|
* If c is not null, it will update the DVBv5 cache struct pointed by it.
|
|
* If p_out is not null, it will update the DVBv3 params pointed by it.
|
|
*/
|
|
static int dtv_get_frontend(struct dvb_frontend *fe,
|
|
struct dvb_frontend_parameters *p_out)
|
|
{
|
|
int r;
|
|
|
|
if (fe->ops.get_frontend) {
|
|
r = fe->ops.get_frontend(fe);
|
|
if (unlikely(r < 0))
|
|
return r;
|
|
if (p_out)
|
|
dtv_property_legacy_params_sync(fe, p_out);
|
|
return 0;
|
|
}
|
|
|
|
/* As everything is in cache, get_frontend fops are always supported */
|
|
return 0;
|
|
}
|
|
|
|
static int dvb_frontend_ioctl_legacy(struct file *file,
|
|
unsigned int cmd, void *parg);
|
|
static int dvb_frontend_ioctl_properties(struct file *file,
|
|
unsigned int cmd, void *parg);
|
|
|
|
static int dtv_property_process_get(struct dvb_frontend *fe,
|
|
const struct dtv_frontend_properties *c,
|
|
struct dtv_property *tvp,
|
|
struct file *file)
|
|
{
|
|
int r, ncaps;
|
|
|
|
switch(tvp->cmd) {
|
|
case DTV_ENUM_DELSYS:
|
|
ncaps = 0;
|
|
while (ncaps < MAX_DELSYS && fe->ops.delsys[ncaps]) {
|
|
tvp->u.buffer.data[ncaps] = fe->ops.delsys[ncaps];
|
|
ncaps++;
|
|
}
|
|
tvp->u.buffer.len = ncaps;
|
|
break;
|
|
case DTV_FREQUENCY:
|
|
tvp->u.data = c->frequency;
|
|
break;
|
|
case DTV_MODULATION:
|
|
tvp->u.data = c->modulation;
|
|
break;
|
|
case DTV_BANDWIDTH_HZ:
|
|
tvp->u.data = c->bandwidth_hz;
|
|
break;
|
|
case DTV_INVERSION:
|
|
tvp->u.data = c->inversion;
|
|
break;
|
|
case DTV_SYMBOL_RATE:
|
|
tvp->u.data = c->symbol_rate;
|
|
break;
|
|
case DTV_INNER_FEC:
|
|
tvp->u.data = c->fec_inner;
|
|
break;
|
|
case DTV_PILOT:
|
|
tvp->u.data = c->pilot;
|
|
break;
|
|
case DTV_ROLLOFF:
|
|
tvp->u.data = c->rolloff;
|
|
break;
|
|
case DTV_DELIVERY_SYSTEM:
|
|
tvp->u.data = c->delivery_system;
|
|
break;
|
|
case DTV_VOLTAGE:
|
|
tvp->u.data = c->voltage;
|
|
break;
|
|
case DTV_TONE:
|
|
tvp->u.data = c->sectone;
|
|
break;
|
|
case DTV_API_VERSION:
|
|
tvp->u.data = (DVB_API_VERSION << 8) | DVB_API_VERSION_MINOR;
|
|
break;
|
|
case DTV_CODE_RATE_HP:
|
|
tvp->u.data = c->code_rate_HP;
|
|
break;
|
|
case DTV_CODE_RATE_LP:
|
|
tvp->u.data = c->code_rate_LP;
|
|
break;
|
|
case DTV_GUARD_INTERVAL:
|
|
tvp->u.data = c->guard_interval;
|
|
break;
|
|
case DTV_TRANSMISSION_MODE:
|
|
tvp->u.data = c->transmission_mode;
|
|
break;
|
|
case DTV_HIERARCHY:
|
|
tvp->u.data = c->hierarchy;
|
|
break;
|
|
case DTV_INTERLEAVING:
|
|
tvp->u.data = c->interleaving;
|
|
break;
|
|
|
|
/* ISDB-T Support here */
|
|
case DTV_ISDBT_PARTIAL_RECEPTION:
|
|
tvp->u.data = c->isdbt_partial_reception;
|
|
break;
|
|
case DTV_ISDBT_SOUND_BROADCASTING:
|
|
tvp->u.data = c->isdbt_sb_mode;
|
|
break;
|
|
case DTV_ISDBT_SB_SUBCHANNEL_ID:
|
|
tvp->u.data = c->isdbt_sb_subchannel;
|
|
break;
|
|
case DTV_ISDBT_SB_SEGMENT_IDX:
|
|
tvp->u.data = c->isdbt_sb_segment_idx;
|
|
break;
|
|
case DTV_ISDBT_SB_SEGMENT_COUNT:
|
|
tvp->u.data = c->isdbt_sb_segment_count;
|
|
break;
|
|
case DTV_ISDBT_LAYER_ENABLED:
|
|
tvp->u.data = c->isdbt_layer_enabled;
|
|
break;
|
|
case DTV_ISDBT_LAYERA_FEC:
|
|
tvp->u.data = c->layer[0].fec;
|
|
break;
|
|
case DTV_ISDBT_LAYERA_MODULATION:
|
|
tvp->u.data = c->layer[0].modulation;
|
|
break;
|
|
case DTV_ISDBT_LAYERA_SEGMENT_COUNT:
|
|
tvp->u.data = c->layer[0].segment_count;
|
|
break;
|
|
case DTV_ISDBT_LAYERA_TIME_INTERLEAVING:
|
|
tvp->u.data = c->layer[0].interleaving;
|
|
break;
|
|
case DTV_ISDBT_LAYERB_FEC:
|
|
tvp->u.data = c->layer[1].fec;
|
|
break;
|
|
case DTV_ISDBT_LAYERB_MODULATION:
|
|
tvp->u.data = c->layer[1].modulation;
|
|
break;
|
|
case DTV_ISDBT_LAYERB_SEGMENT_COUNT:
|
|
tvp->u.data = c->layer[1].segment_count;
|
|
break;
|
|
case DTV_ISDBT_LAYERB_TIME_INTERLEAVING:
|
|
tvp->u.data = c->layer[1].interleaving;
|
|
break;
|
|
case DTV_ISDBT_LAYERC_FEC:
|
|
tvp->u.data = c->layer[2].fec;
|
|
break;
|
|
case DTV_ISDBT_LAYERC_MODULATION:
|
|
tvp->u.data = c->layer[2].modulation;
|
|
break;
|
|
case DTV_ISDBT_LAYERC_SEGMENT_COUNT:
|
|
tvp->u.data = c->layer[2].segment_count;
|
|
break;
|
|
case DTV_ISDBT_LAYERC_TIME_INTERLEAVING:
|
|
tvp->u.data = c->layer[2].interleaving;
|
|
break;
|
|
|
|
/* Multistream support */
|
|
case DTV_STREAM_ID:
|
|
case DTV_DVBT2_PLP_ID_LEGACY:
|
|
tvp->u.data = c->stream_id;
|
|
break;
|
|
|
|
/* ATSC-MH */
|
|
case DTV_ATSCMH_FIC_VER:
|
|
tvp->u.data = fe->dtv_property_cache.atscmh_fic_ver;
|
|
break;
|
|
case DTV_ATSCMH_PARADE_ID:
|
|
tvp->u.data = fe->dtv_property_cache.atscmh_parade_id;
|
|
break;
|
|
case DTV_ATSCMH_NOG:
|
|
tvp->u.data = fe->dtv_property_cache.atscmh_nog;
|
|
break;
|
|
case DTV_ATSCMH_TNOG:
|
|
tvp->u.data = fe->dtv_property_cache.atscmh_tnog;
|
|
break;
|
|
case DTV_ATSCMH_SGN:
|
|
tvp->u.data = fe->dtv_property_cache.atscmh_sgn;
|
|
break;
|
|
case DTV_ATSCMH_PRC:
|
|
tvp->u.data = fe->dtv_property_cache.atscmh_prc;
|
|
break;
|
|
case DTV_ATSCMH_RS_FRAME_MODE:
|
|
tvp->u.data = fe->dtv_property_cache.atscmh_rs_frame_mode;
|
|
break;
|
|
case DTV_ATSCMH_RS_FRAME_ENSEMBLE:
|
|
tvp->u.data = fe->dtv_property_cache.atscmh_rs_frame_ensemble;
|
|
break;
|
|
case DTV_ATSCMH_RS_CODE_MODE_PRI:
|
|
tvp->u.data = fe->dtv_property_cache.atscmh_rs_code_mode_pri;
|
|
break;
|
|
case DTV_ATSCMH_RS_CODE_MODE_SEC:
|
|
tvp->u.data = fe->dtv_property_cache.atscmh_rs_code_mode_sec;
|
|
break;
|
|
case DTV_ATSCMH_SCCC_BLOCK_MODE:
|
|
tvp->u.data = fe->dtv_property_cache.atscmh_sccc_block_mode;
|
|
break;
|
|
case DTV_ATSCMH_SCCC_CODE_MODE_A:
|
|
tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_a;
|
|
break;
|
|
case DTV_ATSCMH_SCCC_CODE_MODE_B:
|
|
tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_b;
|
|
break;
|
|
case DTV_ATSCMH_SCCC_CODE_MODE_C:
|
|
tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_c;
|
|
break;
|
|
case DTV_ATSCMH_SCCC_CODE_MODE_D:
|
|
tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_d;
|
|
break;
|
|
|
|
case DTV_LNA:
|
|
tvp->u.data = c->lna;
|
|
break;
|
|
|
|
/* Fill quality measures */
|
|
case DTV_STAT_SIGNAL_STRENGTH:
|
|
tvp->u.st = c->strength;
|
|
break;
|
|
case DTV_STAT_CNR:
|
|
tvp->u.st = c->cnr;
|
|
break;
|
|
case DTV_STAT_PRE_ERROR_BIT_COUNT:
|
|
tvp->u.st = c->pre_bit_error;
|
|
break;
|
|
case DTV_STAT_PRE_TOTAL_BIT_COUNT:
|
|
tvp->u.st = c->pre_bit_count;
|
|
break;
|
|
case DTV_STAT_POST_ERROR_BIT_COUNT:
|
|
tvp->u.st = c->post_bit_error;
|
|
break;
|
|
case DTV_STAT_POST_TOTAL_BIT_COUNT:
|
|
tvp->u.st = c->post_bit_count;
|
|
break;
|
|
case DTV_STAT_ERROR_BLOCK_COUNT:
|
|
tvp->u.st = c->block_error;
|
|
break;
|
|
case DTV_STAT_TOTAL_BLOCK_COUNT:
|
|
tvp->u.st = c->block_count;
|
|
break;
|
|
default:
|
|
dev_dbg(fe->dvb->device,
|
|
"%s: FE property %d doesn't exist\n",
|
|
__func__, tvp->cmd);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Allow the frontend to override outgoing properties */
|
|
if (fe->ops.get_property) {
|
|
r = fe->ops.get_property(fe, tvp);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
dtv_property_dump(fe, tvp);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dtv_set_frontend(struct dvb_frontend *fe);
|
|
|
|
static bool is_dvbv3_delsys(u32 delsys)
|
|
{
|
|
bool status;
|
|
|
|
status = (delsys == SYS_DVBT) || (delsys == SYS_DVBC_ANNEX_A) ||
|
|
(delsys == SYS_DVBS) || (delsys == SYS_ATSC);
|
|
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* emulate_delivery_system - emulate a DVBv5 delivery system with a DVBv3 type
|
|
* @fe: struct frontend;
|
|
* @delsys: DVBv5 type that will be used for emulation
|
|
*
|
|
* Provides emulation for delivery systems that are compatible with the old
|
|
* DVBv3 call. Among its usages, it provices support for ISDB-T, and allows
|
|
* using a DVB-S2 only frontend just like it were a DVB-S, if the frontent
|
|
* parameters are compatible with DVB-S spec.
|
|
*/
|
|
static int emulate_delivery_system(struct dvb_frontend *fe, u32 delsys)
|
|
{
|
|
int i;
|
|
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
|
|
|
|
c->delivery_system = delsys;
|
|
|
|
/*
|
|
* If the call is for ISDB-T, put it into full-seg, auto mode, TV
|
|
*/
|
|
if (c->delivery_system == SYS_ISDBT) {
|
|
dev_dbg(fe->dvb->device,
|
|
"%s: Using defaults for SYS_ISDBT\n",
|
|
__func__);
|
|
|
|
if (!c->bandwidth_hz)
|
|
c->bandwidth_hz = 6000000;
|
|
|
|
c->isdbt_partial_reception = 0;
|
|
c->isdbt_sb_mode = 0;
|
|
c->isdbt_sb_subchannel = 0;
|
|
c->isdbt_sb_segment_idx = 0;
|
|
c->isdbt_sb_segment_count = 0;
|
|
c->isdbt_layer_enabled = 7;
|
|
for (i = 0; i < 3; i++) {
|
|
c->layer[i].fec = FEC_AUTO;
|
|
c->layer[i].modulation = QAM_AUTO;
|
|
c->layer[i].interleaving = 0;
|
|
c->layer[i].segment_count = 0;
|
|
}
|
|
}
|
|
dev_dbg(fe->dvb->device, "%s: change delivery system on cache to %d\n",
|
|
__func__, c->delivery_system);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* dvbv5_set_delivery_system - Sets the delivery system for a DVBv5 API call
|
|
* @fe: frontend struct
|
|
* @desired_system: delivery system requested by the user
|
|
*
|
|
* A DVBv5 call know what's the desired system it wants. So, set it.
|
|
*
|
|
* There are, however, a few known issues with early DVBv5 applications that
|
|
* are also handled by this logic:
|
|
*
|
|
* 1) Some early apps use SYS_UNDEFINED as the desired delivery system.
|
|
* This is an API violation, but, as we don't want to break userspace,
|
|
* convert it to the first supported delivery system.
|
|
* 2) Some apps might be using a DVBv5 call in a wrong way, passing, for
|
|
* example, SYS_DVBT instead of SYS_ISDBT. This is because early usage of
|
|
* ISDB-T provided backward compat with DVB-T.
|
|
*/
|
|
static int dvbv5_set_delivery_system(struct dvb_frontend *fe,
|
|
u32 desired_system)
|
|
{
|
|
int ncaps;
|
|
u32 delsys = SYS_UNDEFINED;
|
|
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
|
|
enum dvbv3_emulation_type type;
|
|
|
|
/*
|
|
* It was reported that some old DVBv5 applications were
|
|
* filling delivery_system with SYS_UNDEFINED. If this happens,
|
|
* assume that the application wants to use the first supported
|
|
* delivery system.
|
|
*/
|
|
if (desired_system == SYS_UNDEFINED)
|
|
desired_system = fe->ops.delsys[0];
|
|
|
|
/*
|
|
* This is a DVBv5 call. So, it likely knows the supported
|
|
* delivery systems. So, check if the desired delivery system is
|
|
* supported
|
|
*/
|
|
ncaps = 0;
|
|
while (ncaps < MAX_DELSYS && fe->ops.delsys[ncaps]) {
|
|
if (fe->ops.delsys[ncaps] == desired_system) {
|
|
c->delivery_system = desired_system;
|
|
dev_dbg(fe->dvb->device,
|
|
"%s: Changing delivery system to %d\n",
|
|
__func__, desired_system);
|
|
return 0;
|
|
}
|
|
ncaps++;
|
|
}
|
|
|
|
/*
|
|
* The requested delivery system isn't supported. Maybe userspace
|
|
* is requesting a DVBv3 compatible delivery system.
|
|
*
|
|
* The emulation only works if the desired system is one of the
|
|
* delivery systems supported by DVBv3 API
|
|
*/
|
|
if (!is_dvbv3_delsys(desired_system)) {
|
|
dev_dbg(fe->dvb->device,
|
|
"%s: Delivery system %d not supported.\n",
|
|
__func__, desired_system);
|
|
return -EINVAL;
|
|
}
|
|
|
|
type = dvbv3_type(desired_system);
|
|
|
|
/*
|
|
* Get the last non-DVBv3 delivery system that has the same type
|
|
* of the desired system
|
|
*/
|
|
ncaps = 0;
|
|
while (ncaps < MAX_DELSYS && fe->ops.delsys[ncaps]) {
|
|
if (dvbv3_type(fe->ops.delsys[ncaps]) == type)
|
|
delsys = fe->ops.delsys[ncaps];
|
|
ncaps++;
|
|
}
|
|
|
|
/* There's nothing compatible with the desired delivery system */
|
|
if (delsys == SYS_UNDEFINED) {
|
|
dev_dbg(fe->dvb->device,
|
|
"%s: Delivery system %d not supported on emulation mode.\n",
|
|
__func__, desired_system);
|
|
return -EINVAL;
|
|
}
|
|
|
|
dev_dbg(fe->dvb->device,
|
|
"%s: Using delivery system %d emulated as if it were %d\n",
|
|
__func__, delsys, desired_system);
|
|
|
|
return emulate_delivery_system(fe, desired_system);
|
|
}
|
|
|
|
/**
|
|
* dvbv3_set_delivery_system - Sets the delivery system for a DVBv3 API call
|
|
* @fe: frontend struct
|
|
*
|
|
* A DVBv3 call doesn't know what's the desired system it wants. It also
|
|
* doesn't allow to switch between different types. Due to that, userspace
|
|
* should use DVBv5 instead.
|
|
* However, in order to avoid breaking userspace API, limited backward
|
|
* compatibility support is provided.
|
|
*
|
|
* There are some delivery systems that are incompatible with DVBv3 calls.
|
|
*
|
|
* This routine should work fine for frontends that support just one delivery
|
|
* system.
|
|
*
|
|
* For frontends that support multiple frontends:
|
|
* 1) It defaults to use the first supported delivery system. There's an
|
|
* userspace application that allows changing it at runtime;
|
|
*
|
|
* 2) If the current delivery system is not compatible with DVBv3, it gets
|
|
* the first one that it is compatible.
|
|
*
|
|
* NOTE: in order for this to work with applications like Kaffeine that
|
|
* uses a DVBv5 call for DVB-S2 and a DVBv3 call to go back to
|
|
* DVB-S, drivers that support both DVB-S and DVB-S2 should have the
|
|
* SYS_DVBS entry before the SYS_DVBS2, otherwise it won't switch back
|
|
* to DVB-S.
|
|
*/
|
|
static int dvbv3_set_delivery_system(struct dvb_frontend *fe)
|
|
{
|
|
int ncaps;
|
|
u32 delsys = SYS_UNDEFINED;
|
|
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
|
|
|
|
/* If not set yet, defaults to the first supported delivery system */
|
|
if (c->delivery_system == SYS_UNDEFINED)
|
|
c->delivery_system = fe->ops.delsys[0];
|
|
|
|
/*
|
|
* Trivial case: just use the current one, if it already a DVBv3
|
|
* delivery system
|
|
*/
|
|
if (is_dvbv3_delsys(c->delivery_system)) {
|
|
dev_dbg(fe->dvb->device,
|
|
"%s: Using delivery system to %d\n",
|
|
__func__, c->delivery_system);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Seek for the first delivery system that it is compatible with a
|
|
* DVBv3 standard
|
|
*/
|
|
ncaps = 0;
|
|
while (ncaps < MAX_DELSYS && fe->ops.delsys[ncaps]) {
|
|
if (dvbv3_type(fe->ops.delsys[ncaps]) != DVBV3_UNKNOWN) {
|
|
delsys = fe->ops.delsys[ncaps];
|
|
break;
|
|
}
|
|
ncaps++;
|
|
}
|
|
if (delsys == SYS_UNDEFINED) {
|
|
dev_dbg(fe->dvb->device,
|
|
"%s: Couldn't find a delivery system that works with FE_SET_FRONTEND\n",
|
|
__func__);
|
|
return -EINVAL;
|
|
}
|
|
return emulate_delivery_system(fe, delsys);
|
|
}
|
|
|
|
static int dtv_property_process_set(struct dvb_frontend *fe,
|
|
struct dtv_property *tvp,
|
|
struct file *file)
|
|
{
|
|
int r = 0;
|
|
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
|
|
|
|
/* Allow the frontend to validate incoming properties */
|
|
if (fe->ops.set_property) {
|
|
r = fe->ops.set_property(fe, tvp);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
switch(tvp->cmd) {
|
|
case DTV_CLEAR:
|
|
/*
|
|
* Reset a cache of data specific to the frontend here. This does
|
|
* not effect hardware.
|
|
*/
|
|
dvb_frontend_clear_cache(fe);
|
|
break;
|
|
case DTV_TUNE:
|
|
/* interpret the cache of data, build either a traditional frontend
|
|
* tunerequest so we can pass validation in the FE_SET_FRONTEND
|
|
* ioctl.
|
|
*/
|
|
c->state = tvp->cmd;
|
|
dev_dbg(fe->dvb->device, "%s: Finalised property cache\n",
|
|
__func__);
|
|
|
|
r = dtv_set_frontend(fe);
|
|
break;
|
|
case DTV_FREQUENCY:
|
|
c->frequency = tvp->u.data;
|
|
break;
|
|
case DTV_MODULATION:
|
|
c->modulation = tvp->u.data;
|
|
break;
|
|
case DTV_BANDWIDTH_HZ:
|
|
c->bandwidth_hz = tvp->u.data;
|
|
break;
|
|
case DTV_INVERSION:
|
|
c->inversion = tvp->u.data;
|
|
break;
|
|
case DTV_SYMBOL_RATE:
|
|
c->symbol_rate = tvp->u.data;
|
|
break;
|
|
case DTV_INNER_FEC:
|
|
c->fec_inner = tvp->u.data;
|
|
break;
|
|
case DTV_PILOT:
|
|
c->pilot = tvp->u.data;
|
|
break;
|
|
case DTV_ROLLOFF:
|
|
c->rolloff = tvp->u.data;
|
|
break;
|
|
case DTV_DELIVERY_SYSTEM:
|
|
r = dvbv5_set_delivery_system(fe, tvp->u.data);
|
|
break;
|
|
case DTV_VOLTAGE:
|
|
c->voltage = tvp->u.data;
|
|
r = dvb_frontend_ioctl_legacy(file, FE_SET_VOLTAGE,
|
|
(void *)c->voltage);
|
|
break;
|
|
case DTV_TONE:
|
|
c->sectone = tvp->u.data;
|
|
r = dvb_frontend_ioctl_legacy(file, FE_SET_TONE,
|
|
(void *)c->sectone);
|
|
break;
|
|
case DTV_CODE_RATE_HP:
|
|
c->code_rate_HP = tvp->u.data;
|
|
break;
|
|
case DTV_CODE_RATE_LP:
|
|
c->code_rate_LP = tvp->u.data;
|
|
break;
|
|
case DTV_GUARD_INTERVAL:
|
|
c->guard_interval = tvp->u.data;
|
|
break;
|
|
case DTV_TRANSMISSION_MODE:
|
|
c->transmission_mode = tvp->u.data;
|
|
break;
|
|
case DTV_HIERARCHY:
|
|
c->hierarchy = tvp->u.data;
|
|
break;
|
|
case DTV_INTERLEAVING:
|
|
c->interleaving = tvp->u.data;
|
|
break;
|
|
|
|
/* ISDB-T Support here */
|
|
case DTV_ISDBT_PARTIAL_RECEPTION:
|
|
c->isdbt_partial_reception = tvp->u.data;
|
|
break;
|
|
case DTV_ISDBT_SOUND_BROADCASTING:
|
|
c->isdbt_sb_mode = tvp->u.data;
|
|
break;
|
|
case DTV_ISDBT_SB_SUBCHANNEL_ID:
|
|
c->isdbt_sb_subchannel = tvp->u.data;
|
|
break;
|
|
case DTV_ISDBT_SB_SEGMENT_IDX:
|
|
c->isdbt_sb_segment_idx = tvp->u.data;
|
|
break;
|
|
case DTV_ISDBT_SB_SEGMENT_COUNT:
|
|
c->isdbt_sb_segment_count = tvp->u.data;
|
|
break;
|
|
case DTV_ISDBT_LAYER_ENABLED:
|
|
c->isdbt_layer_enabled = tvp->u.data;
|
|
break;
|
|
case DTV_ISDBT_LAYERA_FEC:
|
|
c->layer[0].fec = tvp->u.data;
|
|
break;
|
|
case DTV_ISDBT_LAYERA_MODULATION:
|
|
c->layer[0].modulation = tvp->u.data;
|
|
break;
|
|
case DTV_ISDBT_LAYERA_SEGMENT_COUNT:
|
|
c->layer[0].segment_count = tvp->u.data;
|
|
break;
|
|
case DTV_ISDBT_LAYERA_TIME_INTERLEAVING:
|
|
c->layer[0].interleaving = tvp->u.data;
|
|
break;
|
|
case DTV_ISDBT_LAYERB_FEC:
|
|
c->layer[1].fec = tvp->u.data;
|
|
break;
|
|
case DTV_ISDBT_LAYERB_MODULATION:
|
|
c->layer[1].modulation = tvp->u.data;
|
|
break;
|
|
case DTV_ISDBT_LAYERB_SEGMENT_COUNT:
|
|
c->layer[1].segment_count = tvp->u.data;
|
|
break;
|
|
case DTV_ISDBT_LAYERB_TIME_INTERLEAVING:
|
|
c->layer[1].interleaving = tvp->u.data;
|
|
break;
|
|
case DTV_ISDBT_LAYERC_FEC:
|
|
c->layer[2].fec = tvp->u.data;
|
|
break;
|
|
case DTV_ISDBT_LAYERC_MODULATION:
|
|
c->layer[2].modulation = tvp->u.data;
|
|
break;
|
|
case DTV_ISDBT_LAYERC_SEGMENT_COUNT:
|
|
c->layer[2].segment_count = tvp->u.data;
|
|
break;
|
|
case DTV_ISDBT_LAYERC_TIME_INTERLEAVING:
|
|
c->layer[2].interleaving = tvp->u.data;
|
|
break;
|
|
|
|
/* Multistream support */
|
|
case DTV_STREAM_ID:
|
|
case DTV_DVBT2_PLP_ID_LEGACY:
|
|
c->stream_id = tvp->u.data;
|
|
break;
|
|
|
|
/* ATSC-MH */
|
|
case DTV_ATSCMH_PARADE_ID:
|
|
fe->dtv_property_cache.atscmh_parade_id = tvp->u.data;
|
|
break;
|
|
case DTV_ATSCMH_RS_FRAME_ENSEMBLE:
|
|
fe->dtv_property_cache.atscmh_rs_frame_ensemble = tvp->u.data;
|
|
break;
|
|
|
|
case DTV_LNA:
|
|
c->lna = tvp->u.data;
|
|
if (fe->ops.set_lna)
|
|
r = fe->ops.set_lna(fe);
|
|
if (r < 0)
|
|
c->lna = LNA_AUTO;
|
|
break;
|
|
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
static int dvb_frontend_ioctl(struct file *file,
|
|
unsigned int cmd, void *parg)
|
|
{
|
|
struct dvb_device *dvbdev = file->private_data;
|
|
struct dvb_frontend *fe = dvbdev->priv;
|
|
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
|
|
struct dvb_frontend_private *fepriv = fe->frontend_priv;
|
|
int err = -EOPNOTSUPP;
|
|
|
|
dev_dbg(fe->dvb->device, "%s: (%d)\n", __func__, _IOC_NR(cmd));
|
|
if (down_interruptible(&fepriv->sem))
|
|
return -ERESTARTSYS;
|
|
|
|
if (fe->exit != DVB_FE_NO_EXIT) {
|
|
up(&fepriv->sem);
|
|
return -ENODEV;
|
|
}
|
|
|
|
if ((file->f_flags & O_ACCMODE) == O_RDONLY &&
|
|
(_IOC_DIR(cmd) != _IOC_READ || cmd == FE_GET_EVENT ||
|
|
cmd == FE_DISEQC_RECV_SLAVE_REPLY)) {
|
|
up(&fepriv->sem);
|
|
return -EPERM;
|
|
}
|
|
|
|
if ((cmd == FE_SET_PROPERTY) || (cmd == FE_GET_PROPERTY))
|
|
err = dvb_frontend_ioctl_properties(file, cmd, parg);
|
|
else {
|
|
c->state = DTV_UNDEFINED;
|
|
err = dvb_frontend_ioctl_legacy(file, cmd, parg);
|
|
}
|
|
|
|
up(&fepriv->sem);
|
|
return err;
|
|
}
|
|
|
|
static int dvb_frontend_ioctl_properties(struct file *file,
|
|
unsigned int cmd, void *parg)
|
|
{
|
|
struct dvb_device *dvbdev = file->private_data;
|
|
struct dvb_frontend *fe = dvbdev->priv;
|
|
struct dvb_frontend_private *fepriv = fe->frontend_priv;
|
|
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
|
|
int err = 0;
|
|
|
|
struct dtv_properties *tvps = parg;
|
|
struct dtv_property *tvp = NULL;
|
|
int i;
|
|
|
|
dev_dbg(fe->dvb->device, "%s:\n", __func__);
|
|
|
|
if (cmd == FE_SET_PROPERTY) {
|
|
dev_dbg(fe->dvb->device, "%s: properties.num = %d\n", __func__, tvps->num);
|
|
dev_dbg(fe->dvb->device, "%s: properties.props = %p\n", __func__, tvps->props);
|
|
|
|
/* Put an arbitrary limit on the number of messages that can
|
|
* be sent at once */
|
|
if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS))
|
|
return -EINVAL;
|
|
|
|
tvp = kmalloc(tvps->num * sizeof(struct dtv_property), GFP_KERNEL);
|
|
if (!tvp) {
|
|
err = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
if (copy_from_user(tvp, (void __user *)tvps->props,
|
|
tvps->num * sizeof(struct dtv_property))) {
|
|
err = -EFAULT;
|
|
goto out;
|
|
}
|
|
|
|
for (i = 0; i < tvps->num; i++) {
|
|
err = dtv_property_process_set(fe, tvp + i, file);
|
|
if (err < 0)
|
|
goto out;
|
|
(tvp + i)->result = err;
|
|
}
|
|
|
|
if (c->state == DTV_TUNE)
|
|
dev_dbg(fe->dvb->device, "%s: Property cache is full, tuning\n", __func__);
|
|
|
|
} else if (cmd == FE_GET_PROPERTY) {
|
|
dev_dbg(fe->dvb->device, "%s: properties.num = %d\n", __func__, tvps->num);
|
|
dev_dbg(fe->dvb->device, "%s: properties.props = %p\n", __func__, tvps->props);
|
|
|
|
/* Put an arbitrary limit on the number of messages that can
|
|
* be sent at once */
|
|
if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS))
|
|
return -EINVAL;
|
|
|
|
tvp = kmalloc(tvps->num * sizeof(struct dtv_property), GFP_KERNEL);
|
|
if (!tvp) {
|
|
err = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
if (copy_from_user(tvp, (void __user *)tvps->props,
|
|
tvps->num * sizeof(struct dtv_property))) {
|
|
err = -EFAULT;
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Fills the cache out struct with the cache contents, plus
|
|
* the data retrieved from get_frontend, if the frontend
|
|
* is not idle. Otherwise, returns the cached content
|
|
*/
|
|
if (fepriv->state != FESTATE_IDLE) {
|
|
err = dtv_get_frontend(fe, NULL);
|
|
if (err < 0)
|
|
goto out;
|
|
}
|
|
for (i = 0; i < tvps->num; i++) {
|
|
err = dtv_property_process_get(fe, c, tvp + i, file);
|
|
if (err < 0)
|
|
goto out;
|
|
(tvp + i)->result = err;
|
|
}
|
|
|
|
if (copy_to_user((void __user *)tvps->props, tvp,
|
|
tvps->num * sizeof(struct dtv_property))) {
|
|
err = -EFAULT;
|
|
goto out;
|
|
}
|
|
|
|
} else
|
|
err = -EOPNOTSUPP;
|
|
|
|
out:
|
|
kfree(tvp);
|
|
return err;
|
|
}
|
|
|
|
static int dtv_set_frontend(struct dvb_frontend *fe)
|
|
{
|
|
struct dvb_frontend_private *fepriv = fe->frontend_priv;
|
|
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
|
|
struct dvb_frontend_tune_settings fetunesettings;
|
|
u32 rolloff = 0;
|
|
|
|
if (dvb_frontend_check_parameters(fe) < 0)
|
|
return -EINVAL;
|
|
|
|
/*
|
|
* Initialize output parameters to match the values given by
|
|
* the user. FE_SET_FRONTEND triggers an initial frontend event
|
|
* with status = 0, which copies output parameters to userspace.
|
|
*/
|
|
dtv_property_legacy_params_sync(fe, &fepriv->parameters_out);
|
|
|
|
/*
|
|
* Be sure that the bandwidth will be filled for all
|
|
* non-satellite systems, as tuners need to know what
|
|
* low pass/Nyquist half filter should be applied, in
|
|
* order to avoid inter-channel noise.
|
|
*
|
|
* ISDB-T and DVB-T/T2 already sets bandwidth.
|
|
* ATSC and DVB-C don't set, so, the core should fill it.
|
|
*
|
|
* On DVB-C Annex A and C, the bandwidth is a function of
|
|
* the roll-off and symbol rate. Annex B defines different
|
|
* roll-off factors depending on the modulation. Fortunately,
|
|
* Annex B is only used with 6MHz, so there's no need to
|
|
* calculate it.
|
|
*
|
|
* While not officially supported, a side effect of handling it at
|
|
* the cache level is that a program could retrieve the bandwidth
|
|
* via DTV_BANDWIDTH_HZ, which may be useful for test programs.
|
|
*/
|
|
switch (c->delivery_system) {
|
|
case SYS_ATSC:
|
|
case SYS_DVBC_ANNEX_B:
|
|
c->bandwidth_hz = 6000000;
|
|
break;
|
|
case SYS_DVBC_ANNEX_A:
|
|
rolloff = 115;
|
|
break;
|
|
case SYS_DVBC_ANNEX_C:
|
|
rolloff = 113;
|
|
break;
|
|
case SYS_DVBS:
|
|
case SYS_TURBO:
|
|
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 = (c->symbol_rate * rolloff) / 100;
|
|
|
|
/* force auto frequency inversion if requested */
|
|
if (dvb_force_auto_inversion)
|
|
c->inversion = INVERSION_AUTO;
|
|
|
|
/*
|
|
* without hierarchical coding code_rate_LP is irrelevant,
|
|
* so we tolerate the otherwise invalid FEC_NONE setting
|
|
*/
|
|
if (c->hierarchy == HIERARCHY_NONE && c->code_rate_LP == FEC_NONE)
|
|
c->code_rate_LP = FEC_AUTO;
|
|
|
|
/* get frontend-specific tuning settings */
|
|
memset(&fetunesettings, 0, sizeof(struct dvb_frontend_tune_settings));
|
|
if (fe->ops.get_tune_settings && (fe->ops.get_tune_settings(fe, &fetunesettings) == 0)) {
|
|
fepriv->min_delay = (fetunesettings.min_delay_ms * HZ) / 1000;
|
|
fepriv->max_drift = fetunesettings.max_drift;
|
|
fepriv->step_size = fetunesettings.step_size;
|
|
} else {
|
|
/* default values */
|
|
switch (c->delivery_system) {
|
|
case SYS_DVBS:
|
|
case SYS_DVBS2:
|
|
case SYS_ISDBS:
|
|
case SYS_TURBO:
|
|
case SYS_DVBC_ANNEX_A:
|
|
case SYS_DVBC_ANNEX_C:
|
|
fepriv->min_delay = HZ / 20;
|
|
fepriv->step_size = c->symbol_rate / 16000;
|
|
fepriv->max_drift = c->symbol_rate / 2000;
|
|
break;
|
|
case SYS_DVBT:
|
|
case SYS_DVBT2:
|
|
case SYS_ISDBT:
|
|
case SYS_DTMB:
|
|
fepriv->min_delay = HZ / 20;
|
|
fepriv->step_size = fe->ops.info.frequency_stepsize * 2;
|
|
fepriv->max_drift = (fe->ops.info.frequency_stepsize * 2) + 1;
|
|
break;
|
|
default:
|
|
/*
|
|
* FIXME: This sounds wrong! if freqency_stepsize is
|
|
* defined by the frontend, why not use it???
|
|
*/
|
|
fepriv->min_delay = HZ / 20;
|
|
fepriv->step_size = 0; /* no zigzag */
|
|
fepriv->max_drift = 0;
|
|
break;
|
|
}
|
|
}
|
|
if (dvb_override_tune_delay > 0)
|
|
fepriv->min_delay = (dvb_override_tune_delay * HZ) / 1000;
|
|
|
|
fepriv->state = FESTATE_RETUNE;
|
|
|
|
/* Request the search algorithm to search */
|
|
fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN;
|
|
|
|
dvb_frontend_clear_events(fe);
|
|
dvb_frontend_add_event(fe, 0);
|
|
dvb_frontend_wakeup(fe);
|
|
fepriv->status = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int dvb_frontend_ioctl_legacy(struct file *file,
|
|
unsigned int cmd, void *parg)
|
|
{
|
|
struct dvb_device *dvbdev = file->private_data;
|
|
struct dvb_frontend *fe = dvbdev->priv;
|
|
struct dvb_frontend_private *fepriv = fe->frontend_priv;
|
|
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
|
|
int err = -EOPNOTSUPP;
|
|
|
|
switch (cmd) {
|
|
case FE_GET_INFO: {
|
|
struct dvb_frontend_info* info = parg;
|
|
|
|
memcpy(info, &fe->ops.info, sizeof(struct dvb_frontend_info));
|
|
dvb_frontend_get_frequency_limits(fe, &info->frequency_min, &info->frequency_max);
|
|
|
|
/*
|
|
* Associate the 4 delivery systems supported by DVBv3
|
|
* API with their DVBv5 counterpart. For the other standards,
|
|
* use the closest type, assuming that it would hopefully
|
|
* work with a DVBv3 application.
|
|
* It should be noticed that, on multi-frontend devices with
|
|
* different types (terrestrial and cable, for example),
|
|
* a pure DVBv3 application won't be able to use all delivery
|
|
* systems. Yet, changing the DVBv5 cache to the other delivery
|
|
* system should be enough for making it work.
|
|
*/
|
|
switch (dvbv3_type(c->delivery_system)) {
|
|
case DVBV3_QPSK:
|
|
info->type = FE_QPSK;
|
|
break;
|
|
case DVBV3_ATSC:
|
|
info->type = FE_ATSC;
|
|
break;
|
|
case DVBV3_QAM:
|
|
info->type = FE_QAM;
|
|
break;
|
|
case DVBV3_OFDM:
|
|
info->type = FE_OFDM;
|
|
break;
|
|
default:
|
|
dev_err(fe->dvb->device,
|
|
"%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
|
|
__func__, c->delivery_system);
|
|
fe->ops.info.type = FE_OFDM;
|
|
}
|
|
dev_dbg(fe->dvb->device, "%s: current delivery system on cache: %d, V3 type: %d\n",
|
|
__func__, c->delivery_system, fe->ops.info.type);
|
|
|
|
/* Force the CAN_INVERSION_AUTO bit on. If the frontend doesn't
|
|
* do it, it is done for it. */
|
|
info->caps |= FE_CAN_INVERSION_AUTO;
|
|
err = 0;
|
|
break;
|
|
}
|
|
|
|
case FE_READ_STATUS: {
|
|
fe_status_t* status = parg;
|
|
|
|
/* if retune was requested but hasn't occurred yet, prevent
|
|
* that user get signal state from previous tuning */
|
|
if (fepriv->state == FESTATE_RETUNE ||
|
|
fepriv->state == FESTATE_ERROR) {
|
|
err=0;
|
|
*status = 0;
|
|
break;
|
|
}
|
|
|
|
if (fe->ops.read_status)
|
|
err = fe->ops.read_status(fe, status);
|
|
break;
|
|
}
|
|
|
|
case FE_READ_BER:
|
|
if (fe->ops.read_ber) {
|
|
if (fepriv->thread)
|
|
err = fe->ops.read_ber(fe, (__u32 *) parg);
|
|
else
|
|
err = -EAGAIN;
|
|
}
|
|
break;
|
|
|
|
case FE_READ_SIGNAL_STRENGTH:
|
|
if (fe->ops.read_signal_strength) {
|
|
if (fepriv->thread)
|
|
err = fe->ops.read_signal_strength(fe, (__u16 *) parg);
|
|
else
|
|
err = -EAGAIN;
|
|
}
|
|
break;
|
|
|
|
case FE_READ_SNR:
|
|
if (fe->ops.read_snr) {
|
|
if (fepriv->thread)
|
|
err = fe->ops.read_snr(fe, (__u16 *) parg);
|
|
else
|
|
err = -EAGAIN;
|
|
}
|
|
break;
|
|
|
|
case FE_READ_UNCORRECTED_BLOCKS:
|
|
if (fe->ops.read_ucblocks) {
|
|
if (fepriv->thread)
|
|
err = fe->ops.read_ucblocks(fe, (__u32 *) parg);
|
|
else
|
|
err = -EAGAIN;
|
|
}
|
|
break;
|
|
|
|
case FE_DISEQC_RESET_OVERLOAD:
|
|
if (fe->ops.diseqc_reset_overload) {
|
|
err = fe->ops.diseqc_reset_overload(fe);
|
|
fepriv->state = FESTATE_DISEQC;
|
|
fepriv->status = 0;
|
|
}
|
|
break;
|
|
|
|
case FE_DISEQC_SEND_MASTER_CMD:
|
|
if (fe->ops.diseqc_send_master_cmd) {
|
|
err = fe->ops.diseqc_send_master_cmd(fe, (struct dvb_diseqc_master_cmd*) parg);
|
|
fepriv->state = FESTATE_DISEQC;
|
|
fepriv->status = 0;
|
|
}
|
|
break;
|
|
|
|
case FE_DISEQC_SEND_BURST:
|
|
if (fe->ops.diseqc_send_burst) {
|
|
err = fe->ops.diseqc_send_burst(fe, (fe_sec_mini_cmd_t) parg);
|
|
fepriv->state = FESTATE_DISEQC;
|
|
fepriv->status = 0;
|
|
}
|
|
break;
|
|
|
|
case FE_SET_TONE:
|
|
if (fe->ops.set_tone) {
|
|
err = fe->ops.set_tone(fe, (fe_sec_tone_mode_t) parg);
|
|
fepriv->tone = (fe_sec_tone_mode_t) parg;
|
|
fepriv->state = FESTATE_DISEQC;
|
|
fepriv->status = 0;
|
|
}
|
|
break;
|
|
|
|
case FE_SET_VOLTAGE:
|
|
if (fe->ops.set_voltage) {
|
|
err = fe->ops.set_voltage(fe, (fe_sec_voltage_t) parg);
|
|
fepriv->voltage = (fe_sec_voltage_t) parg;
|
|
fepriv->state = FESTATE_DISEQC;
|
|
fepriv->status = 0;
|
|
}
|
|
break;
|
|
|
|
case FE_DISHNETWORK_SEND_LEGACY_CMD:
|
|
if (fe->ops.dishnetwork_send_legacy_command) {
|
|
err = fe->ops.dishnetwork_send_legacy_command(fe, (unsigned long) parg);
|
|
fepriv->state = FESTATE_DISEQC;
|
|
fepriv->status = 0;
|
|
} else if (fe->ops.set_voltage) {
|
|
/*
|
|
* NOTE: This is a fallback condition. Some frontends
|
|
* (stv0299 for instance) take longer than 8msec to
|
|
* respond to a set_voltage command. Those switches
|
|
* need custom routines to switch properly. For all
|
|
* other frontends, the following 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;
|
|
struct timeval nexttime;
|
|
struct timeval tv[10];
|
|
int i;
|
|
u8 last = 1;
|
|
if (dvb_frontend_debug)
|
|
printk("%s switch command: 0x%04lx\n", __func__, swcmd);
|
|
do_gettimeofday(&nexttime);
|
|
if (dvb_frontend_debug)
|
|
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)
|
|
do_gettimeofday(&tv[i + 1]);
|
|
if ((swcmd & 0x01) != last) {
|
|
/* set voltage to (last ? 13V : 18V) */
|
|
fe->ops.set_voltage(fe, (last) ? SEC_VOLTAGE_13 : SEC_VOLTAGE_18);
|
|
last = (last) ? 0 : 1;
|
|
}
|
|
swcmd = swcmd >> 1;
|
|
if (i != 8)
|
|
dvb_frontend_sleep_until(&nexttime, 8000);
|
|
}
|
|
if (dvb_frontend_debug) {
|
|
printk("%s(%d): switch delay (should be 32k followed by all 8k\n",
|
|
__func__, fe->dvb->num);
|
|
for (i = 1; i < 10; i++)
|
|
printk("%d: %d\n", i, timeval_usec_diff(tv[i-1] , tv[i]));
|
|
}
|
|
err = 0;
|
|
fepriv->state = FESTATE_DISEQC;
|
|
fepriv->status = 0;
|
|
}
|
|
break;
|
|
|
|
case FE_DISEQC_RECV_SLAVE_REPLY:
|
|
if (fe->ops.diseqc_recv_slave_reply)
|
|
err = fe->ops.diseqc_recv_slave_reply(fe, (struct dvb_diseqc_slave_reply*) parg);
|
|
break;
|
|
|
|
case FE_ENABLE_HIGH_LNB_VOLTAGE:
|
|
if (fe->ops.enable_high_lnb_voltage)
|
|
err = fe->ops.enable_high_lnb_voltage(fe, (long) parg);
|
|
break;
|
|
|
|
case FE_SET_FRONTEND:
|
|
err = dvbv3_set_delivery_system(fe);
|
|
if (err)
|
|
break;
|
|
|
|
err = dtv_property_cache_sync(fe, c, parg);
|
|
if (err)
|
|
break;
|
|
err = dtv_set_frontend(fe);
|
|
break;
|
|
case FE_GET_EVENT:
|
|
err = dvb_frontend_get_event (fe, parg, file->f_flags);
|
|
break;
|
|
|
|
case FE_GET_FRONTEND:
|
|
err = dtv_get_frontend(fe, parg);
|
|
break;
|
|
|
|
case FE_SET_FRONTEND_TUNE_MODE:
|
|
fepriv->tune_mode_flags = (unsigned long) parg;
|
|
err = 0;
|
|
break;
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
|
|
static unsigned int dvb_frontend_poll(struct file *file, struct poll_table_struct *wait)
|
|
{
|
|
struct dvb_device *dvbdev = file->private_data;
|
|
struct dvb_frontend *fe = dvbdev->priv;
|
|
struct dvb_frontend_private *fepriv = fe->frontend_priv;
|
|
|
|
dev_dbg_ratelimited(fe->dvb->device, "%s:\n", __func__);
|
|
|
|
poll_wait (file, &fepriv->events.wait_queue, wait);
|
|
|
|
if (fepriv->events.eventw != fepriv->events.eventr)
|
|
return (POLLIN | POLLRDNORM | POLLPRI);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dvb_frontend_open(struct inode *inode, struct file *file)
|
|
{
|
|
struct dvb_device *dvbdev = file->private_data;
|
|
struct dvb_frontend *fe = dvbdev->priv;
|
|
struct dvb_frontend_private *fepriv = fe->frontend_priv;
|
|
struct dvb_adapter *adapter = fe->dvb;
|
|
int ret;
|
|
|
|
dev_dbg(fe->dvb->device, "%s:\n", __func__);
|
|
if (fe->exit == DVB_FE_DEVICE_REMOVED)
|
|
return -ENODEV;
|
|
|
|
if (adapter->mfe_shared) {
|
|
mutex_lock (&adapter->mfe_lock);
|
|
|
|
if (adapter->mfe_dvbdev == NULL)
|
|
adapter->mfe_dvbdev = dvbdev;
|
|
|
|
else if (adapter->mfe_dvbdev != dvbdev) {
|
|
struct dvb_device
|
|
*mfedev = adapter->mfe_dvbdev;
|
|
struct dvb_frontend
|
|
*mfe = mfedev->priv;
|
|
struct dvb_frontend_private
|
|
*mfepriv = mfe->frontend_priv;
|
|
int mferetry = (dvb_mfe_wait_time << 1);
|
|
|
|
mutex_unlock (&adapter->mfe_lock);
|
|
while (mferetry-- && (mfedev->users != -1 ||
|
|
mfepriv->thread != NULL)) {
|
|
if(msleep_interruptible(500)) {
|
|
if(signal_pending(current))
|
|
return -EINTR;
|
|
}
|
|
}
|
|
|
|
mutex_lock (&adapter->mfe_lock);
|
|
if(adapter->mfe_dvbdev != dvbdev) {
|
|
mfedev = adapter->mfe_dvbdev;
|
|
mfe = mfedev->priv;
|
|
mfepriv = mfe->frontend_priv;
|
|
if (mfedev->users != -1 ||
|
|
mfepriv->thread != NULL) {
|
|
mutex_unlock (&adapter->mfe_lock);
|
|
return -EBUSY;
|
|
}
|
|
adapter->mfe_dvbdev = dvbdev;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl) {
|
|
if ((ret = fe->ops.ts_bus_ctrl(fe, 1)) < 0)
|
|
goto err0;
|
|
|
|
/* If we took control of the bus, we need to force
|
|
reinitialization. This is because many ts_bus_ctrl()
|
|
functions strobe the RESET pin on the demod, and if the
|
|
frontend thread already exists then the dvb_init() routine
|
|
won't get called (which is what usually does initial
|
|
register configuration). */
|
|
fepriv->reinitialise = 1;
|
|
}
|
|
|
|
if ((ret = dvb_generic_open (inode, file)) < 0)
|
|
goto err1;
|
|
|
|
if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
|
|
/* normal tune mode when opened R/W */
|
|
fepriv->tune_mode_flags &= ~FE_TUNE_MODE_ONESHOT;
|
|
fepriv->tone = -1;
|
|
fepriv->voltage = -1;
|
|
|
|
ret = dvb_frontend_start (fe);
|
|
if (ret)
|
|
goto err2;
|
|
|
|
/* empty event queue */
|
|
fepriv->events.eventr = fepriv->events.eventw = 0;
|
|
}
|
|
|
|
if (adapter->mfe_shared)
|
|
mutex_unlock (&adapter->mfe_lock);
|
|
return ret;
|
|
|
|
err2:
|
|
dvb_generic_release(inode, file);
|
|
err1:
|
|
if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl)
|
|
fe->ops.ts_bus_ctrl(fe, 0);
|
|
err0:
|
|
if (adapter->mfe_shared)
|
|
mutex_unlock (&adapter->mfe_lock);
|
|
return ret;
|
|
}
|
|
|
|
static int dvb_frontend_release(struct inode *inode, struct file *file)
|
|
{
|
|
struct dvb_device *dvbdev = file->private_data;
|
|
struct dvb_frontend *fe = dvbdev->priv;
|
|
struct dvb_frontend_private *fepriv = fe->frontend_priv;
|
|
int ret;
|
|
|
|
dev_dbg(fe->dvb->device, "%s:\n", __func__);
|
|
|
|
if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
|
|
fepriv->release_jiffies = jiffies;
|
|
mb();
|
|
}
|
|
|
|
ret = dvb_generic_release (inode, file);
|
|
|
|
if (dvbdev->users == -1) {
|
|
wake_up(&fepriv->wait_queue);
|
|
if (fe->exit != DVB_FE_NO_EXIT)
|
|
wake_up(&dvbdev->wait_queue);
|
|
if (fe->ops.ts_bus_ctrl)
|
|
fe->ops.ts_bus_ctrl(fe, 0);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const struct file_operations dvb_frontend_fops = {
|
|
.owner = THIS_MODULE,
|
|
.unlocked_ioctl = dvb_generic_ioctl,
|
|
.poll = dvb_frontend_poll,
|
|
.open = dvb_frontend_open,
|
|
.release = dvb_frontend_release,
|
|
.llseek = noop_llseek,
|
|
};
|
|
|
|
int dvb_frontend_suspend(struct dvb_frontend *fe)
|
|
{
|
|
int ret = 0;
|
|
|
|
dev_dbg(fe->dvb->device, "%s: adap=%d fe=%d\n", __func__, fe->dvb->num,
|
|
fe->id);
|
|
|
|
if (fe->ops.tuner_ops.suspend)
|
|
ret = fe->ops.tuner_ops.suspend(fe);
|
|
else if (fe->ops.tuner_ops.sleep)
|
|
ret = fe->ops.tuner_ops.sleep(fe);
|
|
|
|
if (fe->ops.sleep)
|
|
ret = fe->ops.sleep(fe);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(dvb_frontend_suspend);
|
|
|
|
int dvb_frontend_resume(struct dvb_frontend *fe)
|
|
{
|
|
struct dvb_frontend_private *fepriv = fe->frontend_priv;
|
|
int ret = 0;
|
|
|
|
dev_dbg(fe->dvb->device, "%s: adap=%d fe=%d\n", __func__, fe->dvb->num,
|
|
fe->id);
|
|
|
|
fe->exit = DVB_FE_DEVICE_RESUME;
|
|
if (fe->ops.init)
|
|
ret = fe->ops.init(fe);
|
|
|
|
if (fe->ops.tuner_ops.resume)
|
|
ret = fe->ops.tuner_ops.resume(fe);
|
|
else if (fe->ops.tuner_ops.init)
|
|
ret = fe->ops.tuner_ops.init(fe);
|
|
|
|
fe->exit = DVB_FE_NO_EXIT;
|
|
fepriv->state = FESTATE_RETUNE;
|
|
dvb_frontend_wakeup(fe);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(dvb_frontend_resume);
|
|
|
|
int dvb_register_frontend(struct dvb_adapter* dvb,
|
|
struct dvb_frontend* fe)
|
|
{
|
|
struct dvb_frontend_private *fepriv;
|
|
static const struct dvb_device dvbdev_template = {
|
|
.users = ~0,
|
|
.writers = 1,
|
|
.readers = (~0)-1,
|
|
.fops = &dvb_frontend_fops,
|
|
.kernel_ioctl = dvb_frontend_ioctl
|
|
};
|
|
|
|
dev_dbg(dvb->device, "%s:\n", __func__);
|
|
|
|
if (mutex_lock_interruptible(&frontend_mutex))
|
|
return -ERESTARTSYS;
|
|
|
|
fe->frontend_priv = kzalloc(sizeof(struct dvb_frontend_private), GFP_KERNEL);
|
|
if (fe->frontend_priv == NULL) {
|
|
mutex_unlock(&frontend_mutex);
|
|
return -ENOMEM;
|
|
}
|
|
fepriv = fe->frontend_priv;
|
|
|
|
sema_init(&fepriv->sem, 1);
|
|
init_waitqueue_head (&fepriv->wait_queue);
|
|
init_waitqueue_head (&fepriv->events.wait_queue);
|
|
mutex_init(&fepriv->events.mtx);
|
|
fe->dvb = dvb;
|
|
fepriv->inversion = INVERSION_OFF;
|
|
|
|
dev_info(fe->dvb->device,
|
|
"DVB: registering adapter %i frontend %i (%s)...\n",
|
|
fe->dvb->num, fe->id, fe->ops.info.name);
|
|
|
|
dvb_register_device (fe->dvb, &fepriv->dvbdev, &dvbdev_template,
|
|
fe, DVB_DEVICE_FRONTEND);
|
|
|
|
/*
|
|
* Initialize the cache to the proper values according with the
|
|
* first supported delivery system (ops->delsys[0])
|
|
*/
|
|
|
|
fe->dtv_property_cache.delivery_system = fe->ops.delsys[0];
|
|
dvb_frontend_clear_cache(fe);
|
|
|
|
mutex_unlock(&frontend_mutex);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(dvb_register_frontend);
|
|
|
|
int dvb_unregister_frontend(struct dvb_frontend* fe)
|
|
{
|
|
struct dvb_frontend_private *fepriv = fe->frontend_priv;
|
|
dev_dbg(fe->dvb->device, "%s:\n", __func__);
|
|
|
|
mutex_lock(&frontend_mutex);
|
|
dvb_frontend_stop (fe);
|
|
mutex_unlock(&frontend_mutex);
|
|
|
|
if (fepriv->dvbdev->users < -1)
|
|
wait_event(fepriv->dvbdev->wait_queue,
|
|
fepriv->dvbdev->users==-1);
|
|
|
|
mutex_lock(&frontend_mutex);
|
|
dvb_unregister_device (fepriv->dvbdev);
|
|
|
|
/* fe is invalid now */
|
|
kfree(fepriv);
|
|
mutex_unlock(&frontend_mutex);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(dvb_unregister_frontend);
|
|
|
|
#ifdef CONFIG_MEDIA_ATTACH
|
|
void dvb_frontend_detach(struct dvb_frontend* fe)
|
|
{
|
|
void *ptr;
|
|
|
|
if (fe->ops.release_sec) {
|
|
fe->ops.release_sec(fe);
|
|
dvb_detach(fe->ops.release_sec);
|
|
}
|
|
if (fe->ops.tuner_ops.release) {
|
|
fe->ops.tuner_ops.release(fe);
|
|
dvb_detach(fe->ops.tuner_ops.release);
|
|
}
|
|
if (fe->ops.analog_ops.release) {
|
|
fe->ops.analog_ops.release(fe);
|
|
dvb_detach(fe->ops.analog_ops.release);
|
|
}
|
|
ptr = (void*)fe->ops.release;
|
|
if (ptr) {
|
|
fe->ops.release(fe);
|
|
dvb_detach(ptr);
|
|
}
|
|
}
|
|
#else
|
|
void dvb_frontend_detach(struct dvb_frontend* fe)
|
|
{
|
|
if (fe->ops.release_sec)
|
|
fe->ops.release_sec(fe);
|
|
if (fe->ops.tuner_ops.release)
|
|
fe->ops.tuner_ops.release(fe);
|
|
if (fe->ops.analog_ops.release)
|
|
fe->ops.analog_ops.release(fe);
|
|
if (fe->ops.release)
|
|
fe->ops.release(fe);
|
|
}
|
|
#endif
|
|
EXPORT_SYMBOL(dvb_frontend_detach);
|