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gerrit-public.fairphone.software / kernel / msm-5.4 / 776338e121b9db3156bfb4e21622a0219bbab9d4 / . / drivers / media / dvb / dvb-usb / dvb-usb-i2c.c
blob: 9f0a8d90d1463885c106b9f8191f012f13f25824 [file] [log] [blame]
Johannes Stezenbach776338e2005-06-23 22:02:35 -0700[diff] [blame^]1/* dvb-usb-i2c.c is part of the DVB USB library.
2 *
3 * Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@desy.de)
4 * see dvb-usb-init.c for copyright information.
5 *
6 * This file contains functions for (de-)initializing an I2C adapter.
7 */
8#include "dvb-usb-common.h"
9
10int dvb_usb_i2c_init(struct dvb_usb_device *d)
11{
12 int ret = 0;
13
14 if (!(d->props.caps & DVB_USB_IS_AN_I2C_ADAPTER))
15 return 0;
16
17 if (d->props.i2c_algo == NULL) {
18 err("no i2c algorithm specified");
19 return -EINVAL;
20 }
21
22 strncpy(d->i2c_adap.name,d->desc->name,I2C_NAME_SIZE);
23#ifdef I2C_ADAP_CLASS_TV_DIGITAL
24 d->i2c_adap.class = I2C_ADAP_CLASS_TV_DIGITAL,
25#else
26 d->i2c_adap.class = I2C_CLASS_TV_DIGITAL,
27#endif
28 d->i2c_adap.algo = d->props.i2c_algo;
29 d->i2c_adap.algo_data = NULL;
30 d->i2c_adap.id = I2C_ALGO_BIT;
31
32 i2c_set_adapdata(&d->i2c_adap, d);
33
34 if ((ret = i2c_add_adapter(&d->i2c_adap)) < 0)
35 err("could not add i2c adapter");
36
37 d->state |= DVB_USB_STATE_I2C;
38
39 return ret;
40}
41
42int dvb_usb_i2c_exit(struct dvb_usb_device *d)
43{
44 if (d->state & DVB_USB_STATE_I2C)
45 i2c_del_adapter(&d->i2c_adap);
46 d->state &= ~DVB_USB_STATE_I2C;
47 return 0;
48}
49
50int dvb_usb_pll_init_i2c(struct dvb_frontend *fe)
51{
52 struct dvb_usb_device *d = fe->dvb->priv;
53 struct i2c_msg msg = { .addr = d->pll_addr, .flags = 0, .buf = d->pll_init, .len = 4 };
54 int ret = 0;
55
56 /* if there is nothing to initialize */
57 if (d->pll_init[0] == 0x00 && d->pll_init[1] == 0x00 &&
58 d->pll_init[2] == 0x00 && d->pll_init[3] == 0x00)
59 return 0;
60
61 if (d->tuner_pass_ctrl)
62 d->tuner_pass_ctrl(fe,1,d->pll_addr);
63
64 deb_pll("pll init: %x\n",d->pll_addr);
65 deb_pll("pll-buf: %x %x %x %x\n",d->pll_init[0],d->pll_init[1],
66 d->pll_init[2],d->pll_init[3]);
67
68 if (i2c_transfer (&d->i2c_adap, &msg, 1) != 1) {
69 err("tuner i2c write failed for pll_init.");
70 ret = -EREMOTEIO;
71 }
72 msleep(1);
73
74 if (d->tuner_pass_ctrl)
75 d->tuner_pass_ctrl(fe,0,d->pll_addr);
76 return ret;
77}
78EXPORT_SYMBOL(dvb_usb_pll_init_i2c);
79
80int dvb_usb_pll_set(struct dvb_frontend *fe, struct dvb_frontend_parameters *fep, u8 b[5])
81{
82 struct dvb_usb_device *d = fe->dvb->priv;
83
84 deb_pll("pll addr: %x, freq: %d %p\n",d->pll_addr,fep->frequency,d->pll_desc);
85
86 b[0] = d->pll_addr << 1;
87 dvb_pll_configure(d->pll_desc,&b[1],fep->frequency,fep->u.ofdm.bandwidth);
88
89 deb_pll("pll-buf: %x %x %x %x %x\n",b[0],b[1],b[2],b[3],b[4]);
90
91 return 0;
92}
93EXPORT_SYMBOL(dvb_usb_pll_set);
94
95int dvb_usb_pll_set_i2c(struct dvb_frontend *fe, struct dvb_frontend_parameters *fep)
96{
97 struct dvb_usb_device *d = fe->dvb->priv;
98 int ret = 0;
99 u8 b[5];
100 struct i2c_msg msg = { .addr = d->pll_addr, .flags = 0, .buf = &b[1], .len = 4 };
101
102 dvb_usb_pll_set(fe,fep,b);
103
104 if (d->tuner_pass_ctrl)
105 d->tuner_pass_ctrl(fe,1,d->pll_addr);
106
107 if (i2c_transfer (&d->i2c_adap, &msg, 1) != 1) {
108 err("tuner i2c write failed for pll_set.");
109 ret = -EREMOTEIO;
110 }
111 msleep(1);
112
113 if (d->tuner_pass_ctrl)
114 d->tuner_pass_ctrl(fe,0,d->pll_addr);
115
116 return ret;
117}
118EXPORT_SYMBOL(dvb_usb_pll_set_i2c);