4 * Copyright (C) 2001 convergence integrated media GmbH
5 * Copyright (C) 2004 convergence GmbH
7 * Written by Ralph Metzler
8 * Overhauled by Holger Waechtler
9 * Kernel I2C stuff by Michael Hunold <hunold@convergence.de>
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.
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.
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.
28 #ifndef _DVB_FRONTEND_H_
29 #define _DVB_FRONTEND_H_
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 #include <linux/mutex.h>
40 #include <linux/dvb/frontend.h>
44 struct dvb_frontend_tune_settings {
48 struct dvb_frontend_parameters parameters;
53 struct dvb_tuner_info {
65 struct analog_parameters {
66 unsigned int frequency;
72 struct dvb_tuner_ops {
74 struct dvb_tuner_info info;
76 int (*release)(struct dvb_frontend *fe);
77 int (*init)(struct dvb_frontend *fe);
78 int (*sleep)(struct dvb_frontend *fe);
80 /** This is for simple PLLs - set all parameters in one go. */
81 int (*set_params)(struct dvb_frontend *fe, struct dvb_frontend_parameters *p);
82 int (*set_analog_params)(struct dvb_frontend *fe, struct analog_parameters *p);
84 /** This is support for demods like the mt352 - fills out the supplied buffer with what to write. */
85 int (*calc_regs)(struct dvb_frontend *fe, struct dvb_frontend_parameters *p, u8 *buf, int buf_len);
87 int (*get_frequency)(struct dvb_frontend *fe, u32 *frequency);
88 int (*get_bandwidth)(struct dvb_frontend *fe, u32 *bandwidth);
90 #define TUNER_STATUS_LOCKED 1
91 #define TUNER_STATUS_STEREO 2
92 int (*get_status)(struct dvb_frontend *fe, u32 *status);
93 int (*get_rf_strength)(struct dvb_frontend *fe, u16 *strength);
95 /** These are provided seperately from set_params in order to facilitate silicon
96 * tuners which require sophisticated tuning loops, controlling each parameter seperately. */
97 int (*set_frequency)(struct dvb_frontend *fe, u32 frequency);
98 int (*set_bandwidth)(struct dvb_frontend *fe, u32 bandwidth);
101 struct dvb_frontend_ops {
103 struct dvb_frontend_info info;
105 void (*release)(struct dvb_frontend* fe);
106 void (*release_sec)(struct dvb_frontend* fe);
108 int (*init)(struct dvb_frontend* fe);
109 int (*sleep)(struct dvb_frontend* fe);
111 int (*write)(struct dvb_frontend* fe, u8* buf, int len);
113 /* if this is set, it overrides the default swzigzag */
114 int (*tune)(struct dvb_frontend* fe,
115 struct dvb_frontend_parameters* params,
116 unsigned int mode_flags,
118 fe_status_t *status);
119 /* get frontend tuning algorithm from the module */
120 int (*get_frontend_algo)(struct dvb_frontend *fe);
122 /* these two are only used for the swzigzag code */
123 int (*set_frontend)(struct dvb_frontend* fe, struct dvb_frontend_parameters* params);
124 int (*get_tune_settings)(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* settings);
126 int (*get_frontend)(struct dvb_frontend* fe, struct dvb_frontend_parameters* params);
128 int (*read_status)(struct dvb_frontend* fe, fe_status_t* status);
129 int (*read_ber)(struct dvb_frontend* fe, u32* ber);
130 int (*read_signal_strength)(struct dvb_frontend* fe, u16* strength);
131 int (*read_snr)(struct dvb_frontend* fe, u16* snr);
132 int (*read_ucblocks)(struct dvb_frontend* fe, u32* ucblocks);
134 int (*diseqc_reset_overload)(struct dvb_frontend* fe);
135 int (*diseqc_send_master_cmd)(struct dvb_frontend* fe, struct dvb_diseqc_master_cmd* cmd);
136 int (*diseqc_recv_slave_reply)(struct dvb_frontend* fe, struct dvb_diseqc_slave_reply* reply);
137 int (*diseqc_send_burst)(struct dvb_frontend* fe, fe_sec_mini_cmd_t minicmd);
138 int (*set_tone)(struct dvb_frontend* fe, fe_sec_tone_mode_t tone);
139 int (*set_voltage)(struct dvb_frontend* fe, fe_sec_voltage_t voltage);
140 int (*enable_high_lnb_voltage)(struct dvb_frontend* fe, long arg);
141 int (*dishnetwork_send_legacy_command)(struct dvb_frontend* fe, unsigned long cmd);
142 int (*i2c_gate_ctrl)(struct dvb_frontend* fe, int enable);
143 int (*ts_bus_ctrl)(struct dvb_frontend* fe, int acquire);
145 struct dvb_tuner_ops tuner_ops;
150 struct dvb_fe_events {
151 struct dvb_frontend_event events[MAX_EVENT];
155 wait_queue_head_t wait_queue;
159 struct dvb_frontend {
160 struct dvb_frontend_ops ops;
161 struct dvb_adapter *dvb;
162 void* demodulator_priv;
168 extern int dvb_register_frontend(struct dvb_adapter* dvb,
169 struct dvb_frontend* fe);
171 extern int dvb_unregister_frontend(struct dvb_frontend* fe);
173 extern void dvb_frontend_detach(struct dvb_frontend* fe);
175 extern void dvb_frontend_reinitialise(struct dvb_frontend *fe);
177 extern void dvb_frontend_sleep_until(struct timeval *waketime, u32 add_usec);
178 extern s32 timeval_usec_diff(struct timeval lasttime, struct timeval curtime);