1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
|
/*
* lnbp21.c - driver for lnb supply and control ic lnbp21
*
* Copyright (C) 2006, 2009 Oliver Endriss <o.endriss@gmx.de>
* Copyright (C) 2009 Igor M. Liplianin <liplianin@netup.ru>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* To obtain the license, point your browser to
* http://www.gnu.org/copyleft/gpl.html
*
*
* the project's page is at https://linuxtv.org
*/
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <media/dvb_frontend.h>
#include "lnbp21.h"
#include "lnbh24.h"
struct lnbp21 {
u8 config;
u8 override_or;
u8 override_and;
struct i2c_adapter *i2c;
u8 i2c_addr;
};
static int lnbp21_set_voltage(struct dvb_frontend *fe,
enum fe_sec_voltage voltage)
{
struct lnbp21 *lnbp21 = (struct lnbp21 *) fe->sec_priv;
struct i2c_msg msg = { .addr = lnbp21->i2c_addr, .flags = 0,
.buf = &lnbp21->config,
.len = sizeof(lnbp21->config) };
lnbp21->config &= ~(LNBP21_VSEL | LNBP21_EN);
switch(voltage) {
case SEC_VOLTAGE_OFF:
break;
case SEC_VOLTAGE_13:
lnbp21->config |= LNBP21_EN;
break;
case SEC_VOLTAGE_18:
lnbp21->config |= (LNBP21_EN | LNBP21_VSEL);
break;
default:
return -EINVAL;
}
lnbp21->config |= lnbp21->override_or;
lnbp21->config &= lnbp21->override_and;
return (i2c_transfer(lnbp21->i2c, &msg, 1) == 1) ? 0 : -EIO;
}
static int lnbp21_enable_high_lnb_voltage(struct dvb_frontend *fe, long arg)
{
struct lnbp21 *lnbp21 = (struct lnbp21 *) fe->sec_priv;
struct i2c_msg msg = { .addr = lnbp21->i2c_addr, .flags = 0,
.buf = &lnbp21->config,
.len = sizeof(lnbp21->config) };
if (arg)
lnbp21->config |= LNBP21_LLC;
else
lnbp21->config &= ~LNBP21_LLC;
lnbp21->config |= lnbp21->override_or;
lnbp21->config &= lnbp21->override_and;
return (i2c_transfer(lnbp21->i2c, &msg, 1) == 1) ? 0 : -EIO;
}
static int lnbp21_set_tone(struct dvb_frontend *fe,
enum fe_sec_tone_mode tone)
{
struct lnbp21 *lnbp21 = (struct lnbp21 *) fe->sec_priv;
struct i2c_msg msg = { .addr = lnbp21->i2c_addr, .flags = 0,
.buf = &lnbp21->config,
.len = sizeof(lnbp21->config) };
switch (tone) {
case SEC_TONE_OFF:
lnbp21->config &= ~LNBP21_TEN;
break;
case SEC_TONE_ON:
lnbp21->config |= LNBP21_TEN;
break;
default:
return -EINVAL;
}
lnbp21->config |= lnbp21->override_or;
lnbp21->config &= lnbp21->override_and;
return (i2c_transfer(lnbp21->i2c, &msg, 1) == 1) ? 0 : -EIO;
}
static void lnbp21_release(struct dvb_frontend *fe)
{
/* LNBP power off */
lnbp21_set_voltage(fe, SEC_VOLTAGE_OFF);
/* free data */
kfree(fe->sec_priv);
fe->sec_priv = NULL;
}
static struct dvb_frontend *lnbx2x_attach(struct dvb_frontend *fe,
struct i2c_adapter *i2c, u8 override_set,
u8 override_clear, u8 i2c_addr, u8 config)
{
struct lnbp21 *lnbp21 = kmalloc(sizeof(struct lnbp21), GFP_KERNEL);
if (!lnbp21)
return NULL;
/* default configuration */
lnbp21->config = config;
lnbp21->i2c = i2c;
lnbp21->i2c_addr = i2c_addr;
fe->sec_priv = lnbp21;
/* bits which should be forced to '1' */
lnbp21->override_or = override_set;
/* bits which should be forced to '0' */
lnbp21->override_and = ~override_clear;
/* detect if it is present or not */
if (lnbp21_set_voltage(fe, SEC_VOLTAGE_OFF)) {
kfree(lnbp21);
return NULL;
}
/* install release callback */
fe->ops.release_sec = lnbp21_release;
/* override frontend ops */
fe->ops.set_voltage = lnbp21_set_voltage;
fe->ops.enable_high_lnb_voltage = lnbp21_enable_high_lnb_voltage;
if (!(override_clear & LNBH24_TEN)) /*22kHz logic controlled by demod*/
fe->ops.set_tone = lnbp21_set_tone;
printk(KERN_INFO "LNBx2x attached on addr=%x\n", lnbp21->i2c_addr);
return fe;
}
struct dvb_frontend *lnbh24_attach(struct dvb_frontend *fe,
struct i2c_adapter *i2c, u8 override_set,
u8 override_clear, u8 i2c_addr)
{
return lnbx2x_attach(fe, i2c, override_set, override_clear,
i2c_addr, LNBH24_TTX);
}
EXPORT_SYMBOL(lnbh24_attach);
struct dvb_frontend *lnbp21_attach(struct dvb_frontend *fe,
struct i2c_adapter *i2c, u8 override_set,
u8 override_clear)
{
return lnbx2x_attach(fe, i2c, override_set, override_clear,
0x08, LNBP21_ISEL);
}
EXPORT_SYMBOL(lnbp21_attach);
MODULE_DESCRIPTION("Driver for lnb supply and control ic lnbp21, lnbh24");
MODULE_AUTHOR("Oliver Endriss, Igor M. Liplianin");
MODULE_LICENSE("GPL");
|
