1 /* dvb-usb-i2c.c is part of the DVB USB library.
3 * Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@desy.de)
4 * see dvb-usb-init.c for copyright information.
6 * This file contains functions for (de-)initializing an I2C adapter.
8 #include "dvb-usb-common.h"
10 int dvb_usb_i2c_init(struct dvb_usb_device
*d
)
14 if (!(d
->props
.caps
& DVB_USB_IS_AN_I2C_ADAPTER
))
17 if (d
->props
.i2c_algo
== NULL
) {
18 err("no i2c algorithm specified");
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
,
26 d
->i2c_adap
.class = I2C_CLASS_TV_DIGITAL
,
28 d
->i2c_adap
.algo
= d
->props
.i2c_algo
;
29 d
->i2c_adap
.algo_data
= NULL
;
30 d
->i2c_adap
.id
= I2C_ALGO_BIT
;
32 i2c_set_adapdata(&d
->i2c_adap
, d
);
34 if ((ret
= i2c_add_adapter(&d
->i2c_adap
)) < 0)
35 err("could not add i2c adapter");
37 d
->state
|= DVB_USB_STATE_I2C
;
42 int dvb_usb_i2c_exit(struct dvb_usb_device
*d
)
44 if (d
->state
& DVB_USB_STATE_I2C
)
45 i2c_del_adapter(&d
->i2c_adap
);
46 d
->state
&= ~DVB_USB_STATE_I2C
;
50 int dvb_usb_pll_init_i2c(struct dvb_frontend
*fe
)
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 };
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)
61 if (d
->tuner_pass_ctrl
)
62 d
->tuner_pass_ctrl(fe
,1,d
->pll_addr
);
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]);
68 if (i2c_transfer (&d
->i2c_adap
, &msg
, 1) != 1) {
69 err("tuner i2c write failed for pll_init.");
74 if (d
->tuner_pass_ctrl
)
75 d
->tuner_pass_ctrl(fe
,0,d
->pll_addr
);
78 EXPORT_SYMBOL(dvb_usb_pll_init_i2c
);
80 int dvb_usb_pll_set(struct dvb_frontend
*fe
, struct dvb_frontend_parameters
*fep
, u8 b
[5])
82 struct dvb_usb_device
*d
= fe
->dvb
->priv
;
84 deb_pll("pll addr: %x, freq: %d %p\n",d
->pll_addr
,fep
->frequency
,d
->pll_desc
);
86 b
[0] = d
->pll_addr
<< 1;
87 dvb_pll_configure(d
->pll_desc
,&b
[1],fep
->frequency
,fep
->u
.ofdm
.bandwidth
);
89 deb_pll("pll-buf: %x %x %x %x %x\n",b
[0],b
[1],b
[2],b
[3],b
[4]);
93 EXPORT_SYMBOL(dvb_usb_pll_set
);
95 int dvb_usb_pll_set_i2c(struct dvb_frontend
*fe
, struct dvb_frontend_parameters
*fep
)
97 struct dvb_usb_device
*d
= fe
->dvb
->priv
;
100 struct i2c_msg msg
= { .addr
= d
->pll_addr
, .flags
= 0, .buf
= &b
[1], .len
= 4 };
102 dvb_usb_pll_set(fe
,fep
,b
);
104 if (d
->tuner_pass_ctrl
)
105 d
->tuner_pass_ctrl(fe
,1,d
->pll_addr
);
107 if (i2c_transfer (&d
->i2c_adap
, &msg
, 1) != 1) {
108 err("tuner i2c write failed for pll_set.");
113 if (d
->tuner_pass_ctrl
)
114 d
->tuner_pass_ctrl(fe
,0,d
->pll_addr
);
118 EXPORT_SYMBOL(dvb_usb_pll_set_i2c
);