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86f40cc3c9
Unfortunately on the budget-av board, the CAM reset line is tied to the frontend reset line, so resetting the CAM also zaps the frontend. This breaks the tda1004x at least, and causes it to fail to tune until the budget-av module is reloaded. This patch adds an exported function to dvb_frontend that allows a card to forcibly reinitialise a frontend. The budget-av now does this on CAM reset, which corrects this problem. since they do not tie the CAM reset line to the frontend reset line. Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
120 lines
3.8 KiB
C
120 lines
3.8 KiB
C
/*
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* dvb_frontend.h
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*
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* Copyright (C) 2001 convergence integrated media GmbH
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* Copyright (C) 2004 convergence GmbH
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*
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* Written by Ralph Metzler
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* Overhauled by Holger Waechtler
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* Kernel I2C stuff by Michael Hunold <hunold@convergence.de>
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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 Lesser General Public License
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* as published by the Free Software Foundation; either version 2.1
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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 Lesser 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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*
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*/
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#ifndef _DVB_FRONTEND_H_
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#define _DVB_FRONTEND_H_
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#include <linux/types.h>
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#include <linux/sched.h>
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#include <linux/ioctl.h>
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#include <linux/i2c.h>
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#include <linux/module.h>
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#include <linux/errno.h>
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#include <linux/delay.h>
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#include <linux/dvb/frontend.h>
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#include "dvbdev.h"
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struct dvb_frontend_tune_settings {
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int min_delay_ms;
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int step_size;
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int max_drift;
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struct dvb_frontend_parameters parameters;
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};
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struct dvb_frontend;
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struct dvb_frontend_ops {
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struct dvb_frontend_info info;
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void (*release)(struct dvb_frontend* fe);
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int (*init)(struct dvb_frontend* fe);
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int (*sleep)(struct dvb_frontend* fe);
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/* if this is set, it overrides the default swzigzag */
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int (*tune)(struct dvb_frontend* fe,
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struct dvb_frontend_parameters* params,
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unsigned int mode_flags,
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int *delay,
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fe_status_t *status);
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/* these two are only used for the swzigzag code */
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int (*set_frontend)(struct dvb_frontend* fe, struct dvb_frontend_parameters* params);
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int (*get_tune_settings)(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* settings);
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int (*get_frontend)(struct dvb_frontend* fe, struct dvb_frontend_parameters* params);
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int (*read_status)(struct dvb_frontend* fe, fe_status_t* status);
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int (*read_ber)(struct dvb_frontend* fe, u32* ber);
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int (*read_signal_strength)(struct dvb_frontend* fe, u16* strength);
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int (*read_snr)(struct dvb_frontend* fe, u16* snr);
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int (*read_ucblocks)(struct dvb_frontend* fe, u32* ucblocks);
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int (*diseqc_reset_overload)(struct dvb_frontend* fe);
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int (*diseqc_send_master_cmd)(struct dvb_frontend* fe, struct dvb_diseqc_master_cmd* cmd);
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int (*diseqc_recv_slave_reply)(struct dvb_frontend* fe, struct dvb_diseqc_slave_reply* reply);
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int (*diseqc_send_burst)(struct dvb_frontend* fe, fe_sec_mini_cmd_t minicmd);
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int (*set_tone)(struct dvb_frontend* fe, fe_sec_tone_mode_t tone);
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int (*set_voltage)(struct dvb_frontend* fe, fe_sec_voltage_t voltage);
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int (*enable_high_lnb_voltage)(struct dvb_frontend* fe, long arg);
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int (*dishnetwork_send_legacy_command)(struct dvb_frontend* fe, unsigned long cmd);
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int (*i2c_gate_ctrl)(struct dvb_frontend* fe, int enable);
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};
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#define MAX_EVENT 8
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struct dvb_fe_events {
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struct dvb_frontend_event events[MAX_EVENT];
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int eventw;
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int eventr;
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int overflow;
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wait_queue_head_t wait_queue;
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struct semaphore sem;
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};
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struct dvb_frontend {
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struct dvb_frontend_ops* ops;
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struct dvb_adapter *dvb;
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void* demodulator_priv;
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void* frontend_priv;
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void* misc_priv;
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};
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extern int dvb_register_frontend(struct dvb_adapter* dvb,
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struct dvb_frontend* fe);
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extern int dvb_unregister_frontend(struct dvb_frontend* fe);
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extern void dvb_frontend_reinitialise(struct dvb_frontend *fe);
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extern void dvb_frontend_sleep_until(struct timeval *waketime, u32 add_usec);
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extern s32 timeval_usec_diff(struct timeval lasttime, struct timeval curtime);
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#endif
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