DVB (2444): Implement frontend-specific tuning and the ability to disable zigzag
[linux-2.6-block.git] / drivers / media / dvb / dvb-core / dvb_frontend.h
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1/*
2 * dvb_frontend.h
3 *
4 * Copyright (C) 2001 convergence integrated media GmbH
5 * Copyright (C) 2004 convergence GmbH
6 *
7 * Written by Ralph Metzler
8 * Overhauled by Holger Waechtler
9 * Kernel I2C stuff by Michael Hunold <hunold@convergence.de>
10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU Lesser General Public License
13 * as published by the Free Software Foundation; either version 2.1
14 * of the License, or (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21
22 * You should have received a copy of the GNU Lesser General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
25 *
26 */
27
28#ifndef _DVB_FRONTEND_H_
29#define _DVB_FRONTEND_H_
30
31#include <linux/types.h>
32#include <linux/sched.h>
33#include <linux/ioctl.h>
34#include <linux/i2c.h>
35#include <linux/module.h>
36#include <linux/errno.h>
37#include <linux/delay.h>
38
39#include <linux/dvb/frontend.h>
40
41#include "dvbdev.h"
42
1da177e4 43struct dvb_frontend_tune_settings {
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44 int min_delay_ms;
45 int step_size;
46 int max_drift;
47 struct dvb_frontend_parameters parameters;
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48};
49
50struct dvb_frontend;
51
52struct dvb_frontend_ops {
53
54 struct dvb_frontend_info info;
55
56 void (*release)(struct dvb_frontend* fe);
57
58 int (*init)(struct dvb_frontend* fe);
59 int (*sleep)(struct dvb_frontend* fe);
60
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61 /* if this is set, it overrides the default swzigzag */
62 int (*tune)(struct dvb_frontend* fe,
63 struct dvb_frontend_parameters* params,
64 unsigned int mode_flags,
65 int *delay,
66 fe_status_t *status);
67
68 /* these two are only used for the swzigzag code */
1da177e4 69 int (*set_frontend)(struct dvb_frontend* fe, struct dvb_frontend_parameters* params);
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70 int (*get_tune_settings)(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* settings);
71
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72 int (*get_frontend)(struct dvb_frontend* fe, struct dvb_frontend_parameters* params);
73
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74 int (*read_status)(struct dvb_frontend* fe, fe_status_t* status);
75 int (*read_ber)(struct dvb_frontend* fe, u32* ber);
76 int (*read_signal_strength)(struct dvb_frontend* fe, u16* strength);
77 int (*read_snr)(struct dvb_frontend* fe, u16* snr);
78 int (*read_ucblocks)(struct dvb_frontend* fe, u32* ucblocks);
79
80 int (*diseqc_reset_overload)(struct dvb_frontend* fe);
81 int (*diseqc_send_master_cmd)(struct dvb_frontend* fe, struct dvb_diseqc_master_cmd* cmd);
82 int (*diseqc_recv_slave_reply)(struct dvb_frontend* fe, struct dvb_diseqc_slave_reply* reply);
83 int (*diseqc_send_burst)(struct dvb_frontend* fe, fe_sec_mini_cmd_t minicmd);
84 int (*set_tone)(struct dvb_frontend* fe, fe_sec_tone_mode_t tone);
85 int (*set_voltage)(struct dvb_frontend* fe, fe_sec_voltage_t voltage);
86 int (*enable_high_lnb_voltage)(struct dvb_frontend* fe, int arg);
87 int (*dishnetwork_send_legacy_command)(struct dvb_frontend* fe, unsigned int cmd);
88};
89
90#define MAX_EVENT 8
91
92struct dvb_fe_events {
93 struct dvb_frontend_event events[MAX_EVENT];
94 int eventw;
95 int eventr;
96 int overflow;
97 wait_queue_head_t wait_queue;
98 struct semaphore sem;
99};
100
101struct dvb_frontend {
102 struct dvb_frontend_ops* ops;
103 struct dvb_adapter *dvb;
104 void* demodulator_priv;
105 void* frontend_priv;
106};
107
108extern int dvb_register_frontend(struct dvb_adapter* dvb,
109 struct dvb_frontend* fe);
110
111extern int dvb_unregister_frontend(struct dvb_frontend* fe);
112
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113extern void dvb_frontend_sleep_until(struct timeval *waketime, u32 add_usec);
114extern s32 timeval_usec_diff(struct timeval lasttime, struct timeval curtime);
115
1da177e4 116#endif