Johannes Stezenbach | 776338e | 2005-06-23 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 | |
| 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; |
Johannes Stezenbach | 776338e | 2005-06-23 22:02:35 -0700 | [diff] [blame] | 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 | |
Patrick Boettcher | a6bab88 | 2006-01-09 18:21:33 -0200 | [diff] [blame] | 55 | /* if pll_desc is not used */ |
| 56 | if (d->pll_desc == NULL) |
Johannes Stezenbach | 776338e | 2005-06-23 22:02:35 -0700 | [diff] [blame] | 57 | return 0; |
| 58 | |
| 59 | if (d->tuner_pass_ctrl) |
| 60 | d->tuner_pass_ctrl(fe,1,d->pll_addr); |
| 61 | |
| 62 | deb_pll("pll init: %x\n",d->pll_addr); |
| 63 | deb_pll("pll-buf: %x %x %x %x\n",d->pll_init[0],d->pll_init[1], |
| 64 | d->pll_init[2],d->pll_init[3]); |
| 65 | |
| 66 | if (i2c_transfer (&d->i2c_adap, &msg, 1) != 1) { |
| 67 | err("tuner i2c write failed for pll_init."); |
| 68 | ret = -EREMOTEIO; |
| 69 | } |
| 70 | msleep(1); |
| 71 | |
| 72 | if (d->tuner_pass_ctrl) |
| 73 | d->tuner_pass_ctrl(fe,0,d->pll_addr); |
| 74 | return ret; |
| 75 | } |
| 76 | EXPORT_SYMBOL(dvb_usb_pll_init_i2c); |
| 77 | |
| 78 | int dvb_usb_pll_set(struct dvb_frontend *fe, struct dvb_frontend_parameters *fep, u8 b[5]) |
| 79 | { |
| 80 | struct dvb_usb_device *d = fe->dvb->priv; |
| 81 | |
Patrick Boettcher | a6bab88 | 2006-01-09 18:21:33 -0200 | [diff] [blame] | 82 | if (d->pll_desc == NULL) |
| 83 | return 0; |
| 84 | |
Johannes Stezenbach | 776338e | 2005-06-23 22:02:35 -0700 | [diff] [blame] | 85 | deb_pll("pll addr: %x, freq: %d %p\n",d->pll_addr,fep->frequency,d->pll_desc); |
| 86 | |
| 87 | b[0] = d->pll_addr << 1; |
| 88 | dvb_pll_configure(d->pll_desc,&b[1],fep->frequency,fep->u.ofdm.bandwidth); |
| 89 | |
| 90 | deb_pll("pll-buf: %x %x %x %x %x\n",b[0],b[1],b[2],b[3],b[4]); |
| 91 | |
| 92 | return 0; |
| 93 | } |
| 94 | EXPORT_SYMBOL(dvb_usb_pll_set); |
| 95 | |
| 96 | int dvb_usb_pll_set_i2c(struct dvb_frontend *fe, struct dvb_frontend_parameters *fep) |
| 97 | { |
| 98 | struct dvb_usb_device *d = fe->dvb->priv; |
| 99 | int ret = 0; |
| 100 | u8 b[5]; |
| 101 | struct i2c_msg msg = { .addr = d->pll_addr, .flags = 0, .buf = &b[1], .len = 4 }; |
| 102 | |
| 103 | dvb_usb_pll_set(fe,fep,b); |
| 104 | |
| 105 | if (d->tuner_pass_ctrl) |
| 106 | d->tuner_pass_ctrl(fe,1,d->pll_addr); |
| 107 | |
| 108 | if (i2c_transfer (&d->i2c_adap, &msg, 1) != 1) { |
| 109 | err("tuner i2c write failed for pll_set."); |
| 110 | ret = -EREMOTEIO; |
| 111 | } |
| 112 | msleep(1); |
| 113 | |
| 114 | if (d->tuner_pass_ctrl) |
| 115 | d->tuner_pass_ctrl(fe,0,d->pll_addr); |
| 116 | |
| 117 | return ret; |
| 118 | } |
| 119 | EXPORT_SYMBOL(dvb_usb_pll_set_i2c); |