[PATCH] I2C: Kill i2c_algorithm.id (6/7)
[linux-3.10.git] / drivers / media / dvb / dvb-usb / dvb-usb-i2c.c
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
10 int 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
31         i2c_set_adapdata(&d->i2c_adap, d);
32
33         if ((ret = i2c_add_adapter(&d->i2c_adap)) < 0)
34                 err("could not add i2c adapter");
35
36         d->state |= DVB_USB_STATE_I2C;
37
38         return ret;
39 }
40
41 int dvb_usb_i2c_exit(struct dvb_usb_device *d)
42 {
43         if (d->state & DVB_USB_STATE_I2C)
44                 i2c_del_adapter(&d->i2c_adap);
45         d->state &= ~DVB_USB_STATE_I2C;
46         return 0;
47 }
48
49 int dvb_usb_pll_init_i2c(struct dvb_frontend *fe)
50 {
51         struct dvb_usb_device *d = fe->dvb->priv;
52         struct i2c_msg msg = { .addr = d->pll_addr, .flags = 0, .buf = d->pll_init, .len = 4 };
53         int ret = 0;
54
55         /* if there is nothing to initialize */
56         if (d->pll_init[0] == 0x00 && d->pll_init[1] == 0x00 &&
57                 d->pll_init[2] == 0x00 && d->pll_init[3] == 0x00)
58                 return 0;
59
60         if (d->tuner_pass_ctrl)
61                 d->tuner_pass_ctrl(fe,1,d->pll_addr);
62
63         deb_pll("pll init: %x\n",d->pll_addr);
64         deb_pll("pll-buf: %x %x %x %x\n",d->pll_init[0],d->pll_init[1],
65                         d->pll_init[2],d->pll_init[3]);
66
67         if (i2c_transfer (&d->i2c_adap, &msg, 1) != 1) {
68                 err("tuner i2c write failed for pll_init.");
69                 ret = -EREMOTEIO;
70         }
71         msleep(1);
72
73         if (d->tuner_pass_ctrl)
74                 d->tuner_pass_ctrl(fe,0,d->pll_addr);
75         return ret;
76 }
77 EXPORT_SYMBOL(dvb_usb_pll_init_i2c);
78
79 int dvb_usb_pll_set(struct dvb_frontend *fe, struct dvb_frontend_parameters *fep, u8 b[5])
80 {
81         struct dvb_usb_device *d = fe->dvb->priv;
82
83         deb_pll("pll addr: %x, freq: %d %p\n",d->pll_addr,fep->frequency,d->pll_desc);
84
85         b[0] = d->pll_addr << 1;
86         dvb_pll_configure(d->pll_desc,&b[1],fep->frequency,fep->u.ofdm.bandwidth);
87
88         deb_pll("pll-buf: %x %x %x %x %x\n",b[0],b[1],b[2],b[3],b[4]);
89
90         return 0;
91 }
92 EXPORT_SYMBOL(dvb_usb_pll_set);
93
94 int dvb_usb_pll_set_i2c(struct dvb_frontend *fe, struct dvb_frontend_parameters *fep)
95 {
96         struct dvb_usb_device *d = fe->dvb->priv;
97         int ret = 0;
98         u8 b[5];
99         struct i2c_msg msg = { .addr = d->pll_addr, .flags = 0, .buf = &b[1], .len = 4 };
100
101         dvb_usb_pll_set(fe,fep,b);
102
103         if (d->tuner_pass_ctrl)
104                 d->tuner_pass_ctrl(fe,1,d->pll_addr);
105
106         if (i2c_transfer (&d->i2c_adap, &msg, 1) != 1) {
107                 err("tuner i2c write failed for pll_set.");
108                 ret = -EREMOTEIO;
109         }
110         msleep(1);
111
112         if (d->tuner_pass_ctrl)
113                 d->tuner_pass_ctrl(fe,0,d->pll_addr);
114
115         return ret;
116 }
117 EXPORT_SYMBOL(dvb_usb_pll_set_i2c);