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Andrew de Quinceyd0205422006-04-27 21:45:01 -03001/*
Igor M. Liplianin8c1a2332009-03-03 11:24:18 -03002 * lnbp21.c - driver for lnb supply and control ic lnbp21
Andrew de Quinceyd0205422006-04-27 21:45:01 -03003 *
Oliver Endriss9efc1bd2009-12-13 08:58:38 -03004 * Copyright (C) 2006, 2009 Oliver Endriss <o.endriss@gmx.de>
Igor M. Liplianin8c1a2332009-03-03 11:24:18 -03005 * Copyright (C) 2009 Igor M. Liplianin <liplianin@netup.ru>
Andrew de Quinceyd0205422006-04-27 21:45:01 -03006 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
11 *
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22 * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
23 *
24 *
25 * the project's page is at http://www.linuxtv.org
26 */
27#include <linux/delay.h>
28#include <linux/errno.h>
29#include <linux/init.h>
30#include <linux/kernel.h>
31#include <linux/module.h>
Andrew de Quinceyd0205422006-04-27 21:45:01 -030032#include <linux/string.h>
33#include <linux/slab.h>
34
35#include "dvb_frontend.h"
36#include "lnbp21.h"
Igor M. Liplianin8c1a2332009-03-03 11:24:18 -030037#include "lnbh24.h"
Andrew de Quinceyd0205422006-04-27 21:45:01 -030038
39struct lnbp21 {
40 u8 config;
41 u8 override_or;
42 u8 override_and;
43 struct i2c_adapter *i2c;
Igor M. Liplianin8c1a2332009-03-03 11:24:18 -030044 u8 i2c_addr;
Andrew de Quinceyd0205422006-04-27 21:45:01 -030045};
46
Igor M. Liplianin8c1a2332009-03-03 11:24:18 -030047static int lnbp21_set_voltage(struct dvb_frontend *fe,
Mauro Carvalho Chehab0df289a2015-06-07 14:53:52 -030048 enum fe_sec_voltage voltage)
Andrew de Quinceyd0205422006-04-27 21:45:01 -030049{
Andrew de Quincey13fef932006-08-08 09:10:08 -030050 struct lnbp21 *lnbp21 = (struct lnbp21 *) fe->sec_priv;
Igor M. Liplianin8c1a2332009-03-03 11:24:18 -030051 struct i2c_msg msg = { .addr = lnbp21->i2c_addr, .flags = 0,
Andrew de Quinceyd0205422006-04-27 21:45:01 -030052 .buf = &lnbp21->config,
53 .len = sizeof(lnbp21->config) };
54
55 lnbp21->config &= ~(LNBP21_VSEL | LNBP21_EN);
56
57 switch(voltage) {
58 case SEC_VOLTAGE_OFF:
59 break;
60 case SEC_VOLTAGE_13:
61 lnbp21->config |= LNBP21_EN;
62 break;
63 case SEC_VOLTAGE_18:
64 lnbp21->config |= (LNBP21_EN | LNBP21_VSEL);
65 break;
66 default:
67 return -EINVAL;
Peter Senna Tschudinc2c1b412012-09-28 05:37:22 -030068 }
Andrew de Quinceyd0205422006-04-27 21:45:01 -030069
70 lnbp21->config |= lnbp21->override_or;
71 lnbp21->config &= lnbp21->override_and;
72
73 return (i2c_transfer(lnbp21->i2c, &msg, 1) == 1) ? 0 : -EIO;
74}
75
76static int lnbp21_enable_high_lnb_voltage(struct dvb_frontend *fe, long arg)
77{
Andrew de Quincey13fef932006-08-08 09:10:08 -030078 struct lnbp21 *lnbp21 = (struct lnbp21 *) fe->sec_priv;
Igor M. Liplianin8c1a2332009-03-03 11:24:18 -030079 struct i2c_msg msg = { .addr = lnbp21->i2c_addr, .flags = 0,
Andrew de Quinceyd0205422006-04-27 21:45:01 -030080 .buf = &lnbp21->config,
81 .len = sizeof(lnbp21->config) };
82
83 if (arg)
84 lnbp21->config |= LNBP21_LLC;
85 else
86 lnbp21->config &= ~LNBP21_LLC;
87
88 lnbp21->config |= lnbp21->override_or;
89 lnbp21->config &= lnbp21->override_and;
90
91 return (i2c_transfer(lnbp21->i2c, &msg, 1) == 1) ? 0 : -EIO;
92}
93
Oliver Endriss9efc1bd2009-12-13 08:58:38 -030094static int lnbp21_set_tone(struct dvb_frontend *fe,
Mauro Carvalho Chehab0df289a2015-06-07 14:53:52 -030095 enum fe_sec_tone_mode tone)
Oliver Endriss9efc1bd2009-12-13 08:58:38 -030096{
97 struct lnbp21 *lnbp21 = (struct lnbp21 *) fe->sec_priv;
98 struct i2c_msg msg = { .addr = lnbp21->i2c_addr, .flags = 0,
99 .buf = &lnbp21->config,
100 .len = sizeof(lnbp21->config) };
101
102 switch (tone) {
103 case SEC_TONE_OFF:
104 lnbp21->config &= ~LNBP21_TEN;
105 break;
106 case SEC_TONE_ON:
107 lnbp21->config |= LNBP21_TEN;
108 break;
109 default:
110 return -EINVAL;
Peter Senna Tschudinc2c1b412012-09-28 05:37:22 -0300111 }
Oliver Endriss9efc1bd2009-12-13 08:58:38 -0300112
113 lnbp21->config |= lnbp21->override_or;
114 lnbp21->config &= lnbp21->override_and;
115
116 return (i2c_transfer(lnbp21->i2c, &msg, 1) == 1) ? 0 : -EIO;
117}
118
Andrew de Quinceyd0205422006-04-27 21:45:01 -0300119static void lnbp21_release(struct dvb_frontend *fe)
120{
Andrew de Quinceyd0205422006-04-27 21:45:01 -0300121 /* LNBP power off */
122 lnbp21_set_voltage(fe, SEC_VOLTAGE_OFF);
123
Andrew de Quincey13fef932006-08-08 09:10:08 -0300124 /* free data */
125 kfree(fe->sec_priv);
126 fe->sec_priv = NULL;
Andrew de Quinceyd0205422006-04-27 21:45:01 -0300127}
128
Igor M. Liplianin8c1a2332009-03-03 11:24:18 -0300129static struct dvb_frontend *lnbx2x_attach(struct dvb_frontend *fe,
130 struct i2c_adapter *i2c, u8 override_set,
131 u8 override_clear, u8 i2c_addr, u8 config)
Andrew de Quinceyd0205422006-04-27 21:45:01 -0300132{
133 struct lnbp21 *lnbp21 = kmalloc(sizeof(struct lnbp21), GFP_KERNEL);
134 if (!lnbp21)
Andrew de Quincey13fef932006-08-08 09:10:08 -0300135 return NULL;
Andrew de Quinceyd0205422006-04-27 21:45:01 -0300136
137 /* default configuration */
Igor M. Liplianin8c1a2332009-03-03 11:24:18 -0300138 lnbp21->config = config;
Andrew de Quinceyd0205422006-04-27 21:45:01 -0300139 lnbp21->i2c = i2c;
Igor M. Liplianin8c1a2332009-03-03 11:24:18 -0300140 lnbp21->i2c_addr = i2c_addr;
Andrew de Quincey13fef932006-08-08 09:10:08 -0300141 fe->sec_priv = lnbp21;
Andrew de Quinceyd0205422006-04-27 21:45:01 -0300142
143 /* bits which should be forced to '1' */
144 lnbp21->override_or = override_set;
145
146 /* bits which should be forced to '0' */
147 lnbp21->override_and = ~override_clear;
148
149 /* detect if it is present or not */
150 if (lnbp21_set_voltage(fe, SEC_VOLTAGE_OFF)) {
151 kfree(lnbp21);
Andrew de Quincey13fef932006-08-08 09:10:08 -0300152 return NULL;
Andrew de Quinceyd0205422006-04-27 21:45:01 -0300153 }
154
155 /* install release callback */
Oliver Endrissb5b168d2006-08-08 19:58:27 -0300156 fe->ops.release_sec = lnbp21_release;
Andrew de Quinceyd0205422006-04-27 21:45:01 -0300157
158 /* override frontend ops */
Patrick Boettcherdea74862006-05-14 05:01:31 -0300159 fe->ops.set_voltage = lnbp21_set_voltage;
160 fe->ops.enable_high_lnb_voltage = lnbp21_enable_high_lnb_voltage;
Abylay Ospan07266812010-01-22 16:01:44 -0300161 if (!(override_clear & LNBH24_TEN)) /*22kHz logic controlled by demod*/
Abylay Ospanceb59cf2010-01-13 05:01:56 -0300162 fe->ops.set_tone = lnbp21_set_tone;
Andy Walls3cd52702009-05-22 21:07:46 -0300163 printk(KERN_INFO "LNBx2x attached on addr=%x\n", lnbp21->i2c_addr);
Andrew de Quinceyd0205422006-04-27 21:45:01 -0300164
Andrew de Quincey13fef932006-08-08 09:10:08 -0300165 return fe;
Andrew de Quinceyd0205422006-04-27 21:45:01 -0300166}
Igor M. Liplianin8c1a2332009-03-03 11:24:18 -0300167
Igor M. Liplianin55d5834d2009-03-04 10:40:31 -0300168struct dvb_frontend *lnbh24_attach(struct dvb_frontend *fe,
Igor M. Liplianin8c1a2332009-03-03 11:24:18 -0300169 struct i2c_adapter *i2c, u8 override_set,
170 u8 override_clear, u8 i2c_addr)
171{
172 return lnbx2x_attach(fe, i2c, override_set, override_clear,
173 i2c_addr, LNBH24_TTX);
174}
175EXPORT_SYMBOL(lnbh24_attach);
176
177struct dvb_frontend *lnbp21_attach(struct dvb_frontend *fe,
178 struct i2c_adapter *i2c, u8 override_set,
179 u8 override_clear)
180{
181 return lnbx2x_attach(fe, i2c, override_set, override_clear,
182 0x08, LNBP21_ISEL);
183}
Andrew de Quinceyd0205422006-04-27 21:45:01 -0300184EXPORT_SYMBOL(lnbp21_attach);
185
Igor M. Liplianin8c1a2332009-03-03 11:24:18 -0300186MODULE_DESCRIPTION("Driver for lnb supply and control ic lnbp21, lnbh24");
187MODULE_AUTHOR("Oliver Endriss, Igor M. Liplianin");
Andrew de Quinceyd0205422006-04-27 21:45:01 -0300188MODULE_LICENSE("GPL");