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 | * |
Patrick Boettcher | 4d43e13 | 2006-09-30 06:53:48 -0300 | [diff] [blame] | 3 | * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@desy.de) |
Johannes Stezenbach | 776338e | 2005-06-23 22:02:35 -0700 | [diff] [blame] | 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; |
Jean Delvare | 12a917f | 2007-02-13 22:09:03 +0100 | [diff] [blame] | 30 | d->i2c_adap.dev.parent = &d->udev->dev; |
Johannes Stezenbach | 776338e | 2005-06-23 22:02:35 -0700 | [diff] [blame] | 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 | |
| 42 | int 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 | |
Andrew de Quincey | ee6a2cb | 2006-04-18 17:47:11 -0300 | [diff] [blame] | 50 | int dvb_usb_tuner_init_i2c(struct dvb_frontend *fe) |
Johannes Stezenbach | 776338e | 2005-06-23 22:02:35 -0700 | [diff] [blame] | 51 | { |
Patrick Boettcher | 4d43e13 | 2006-09-30 06:53:48 -0300 | [diff] [blame] | 52 | struct dvb_usb_adapter *adap = fe->dvb->priv; |
| 53 | struct i2c_msg msg = { .addr = adap->pll_addr, .flags = 0, .buf = adap->pll_init, .len = 4 }; |
Johannes Stezenbach | 776338e | 2005-06-23 22:02:35 -0700 | [diff] [blame] | 54 | int ret = 0; |
| 55 | |
Patrick Boettcher | a6bab88 | 2006-01-09 18:21:33 -0200 | [diff] [blame] | 56 | /* if pll_desc is not used */ |
Patrick Boettcher | 4d43e13 | 2006-09-30 06:53:48 -0300 | [diff] [blame] | 57 | if (adap->pll_desc == NULL) |
Johannes Stezenbach | 776338e | 2005-06-23 22:02:35 -0700 | [diff] [blame] | 58 | return 0; |
| 59 | |
Patrick Boettcher | 4d43e13 | 2006-09-30 06:53:48 -0300 | [diff] [blame] | 60 | if (adap->tuner_pass_ctrl) |
| 61 | adap->tuner_pass_ctrl(fe, 1, adap->pll_addr); |
Johannes Stezenbach | 776338e | 2005-06-23 22:02:35 -0700 | [diff] [blame] | 62 | |
Patrick Boettcher | 4d43e13 | 2006-09-30 06:53:48 -0300 | [diff] [blame] | 63 | deb_pll("pll init: %x\n",adap->pll_addr); |
| 64 | deb_pll("pll-buf: %x %x %x %x\n",adap->pll_init[0], adap->pll_init[1], |
| 65 | adap->pll_init[2], adap->pll_init[3]); |
Johannes Stezenbach | 776338e | 2005-06-23 22:02:35 -0700 | [diff] [blame] | 66 | |
Patrick Boettcher | dea7486 | 2006-05-14 05:01:31 -0300 | [diff] [blame] | 67 | if (fe->ops.i2c_gate_ctrl) |
| 68 | fe->ops.i2c_gate_ctrl(fe, 1); |
Patrick Boettcher | 4d43e13 | 2006-09-30 06:53:48 -0300 | [diff] [blame] | 69 | if (i2c_transfer (&adap->dev->i2c_adap, &msg, 1) != 1) { |
Johannes Stezenbach | 776338e | 2005-06-23 22:02:35 -0700 | [diff] [blame] | 70 | err("tuner i2c write failed for pll_init."); |
| 71 | ret = -EREMOTEIO; |
| 72 | } |
| 73 | msleep(1); |
| 74 | |
Patrick Boettcher | 4d43e13 | 2006-09-30 06:53:48 -0300 | [diff] [blame] | 75 | if (adap->tuner_pass_ctrl) |
| 76 | adap->tuner_pass_ctrl(fe,0,adap->pll_addr); |
Johannes Stezenbach | 776338e | 2005-06-23 22:02:35 -0700 | [diff] [blame] | 77 | return ret; |
| 78 | } |
Andrew de Quincey | ee6a2cb | 2006-04-18 17:47:11 -0300 | [diff] [blame] | 79 | EXPORT_SYMBOL(dvb_usb_tuner_init_i2c); |
Johannes Stezenbach | 776338e | 2005-06-23 22:02:35 -0700 | [diff] [blame] | 80 | |
Andrew de Quincey | d3b9d62 | 2006-04-25 05:36:19 -0300 | [diff] [blame] | 81 | int dvb_usb_tuner_calc_regs(struct dvb_frontend *fe, struct dvb_frontend_parameters *fep, u8 *b, int buf_len) |
Johannes Stezenbach | 776338e | 2005-06-23 22:02:35 -0700 | [diff] [blame] | 82 | { |
Patrick Boettcher | 4d43e13 | 2006-09-30 06:53:48 -0300 | [diff] [blame] | 83 | struct dvb_usb_adapter *adap = fe->dvb->priv; |
Johannes Stezenbach | 776338e | 2005-06-23 22:02:35 -0700 | [diff] [blame] | 84 | |
Andrew de Quincey | ee6a2cb | 2006-04-18 17:47:11 -0300 | [diff] [blame] | 85 | if (buf_len != 5) |
| 86 | return -EINVAL; |
Patrick Boettcher | 4d43e13 | 2006-09-30 06:53:48 -0300 | [diff] [blame] | 87 | if (adap->pll_desc == NULL) |
Patrick Boettcher | a6bab88 | 2006-01-09 18:21:33 -0200 | [diff] [blame] | 88 | return 0; |
| 89 | |
Patrick Boettcher | 4d43e13 | 2006-09-30 06:53:48 -0300 | [diff] [blame] | 90 | deb_pll("pll addr: %x, freq: %d %p\n",adap->pll_addr, fep->frequency, adap->pll_desc); |
Johannes Stezenbach | 776338e | 2005-06-23 22:02:35 -0700 | [diff] [blame] | 91 | |
Patrick Boettcher | 4d43e13 | 2006-09-30 06:53:48 -0300 | [diff] [blame] | 92 | b[0] = adap->pll_addr; |
| 93 | dvb_pll_configure(adap->pll_desc, &b[1], fep->frequency, fep->u.ofdm.bandwidth); |
Johannes Stezenbach | 776338e | 2005-06-23 22:02:35 -0700 | [diff] [blame] | 94 | |
| 95 | deb_pll("pll-buf: %x %x %x %x %x\n",b[0],b[1],b[2],b[3],b[4]); |
| 96 | |
Andrew de Quincey | ee6a2cb | 2006-04-18 17:47:11 -0300 | [diff] [blame] | 97 | return 5; |
Johannes Stezenbach | 776338e | 2005-06-23 22:02:35 -0700 | [diff] [blame] | 98 | } |
Andrew de Quincey | d3b9d62 | 2006-04-25 05:36:19 -0300 | [diff] [blame] | 99 | EXPORT_SYMBOL(dvb_usb_tuner_calc_regs); |
Johannes Stezenbach | 776338e | 2005-06-23 22:02:35 -0700 | [diff] [blame] | 100 | |
Andrew de Quincey | d3b9d62 | 2006-04-25 05:36:19 -0300 | [diff] [blame] | 101 | int dvb_usb_tuner_set_params_i2c(struct dvb_frontend *fe, struct dvb_frontend_parameters *fep) |
Johannes Stezenbach | 776338e | 2005-06-23 22:02:35 -0700 | [diff] [blame] | 102 | { |
Patrick Boettcher | 4d43e13 | 2006-09-30 06:53:48 -0300 | [diff] [blame] | 103 | struct dvb_usb_adapter *adap = fe->dvb->priv; |
Johannes Stezenbach | 776338e | 2005-06-23 22:02:35 -0700 | [diff] [blame] | 104 | int ret = 0; |
| 105 | u8 b[5]; |
Patrick Boettcher | 4d43e13 | 2006-09-30 06:53:48 -0300 | [diff] [blame] | 106 | struct i2c_msg msg = { .addr = adap->pll_addr, .flags = 0, .buf = &b[1], .len = 4 }; |
Johannes Stezenbach | 776338e | 2005-06-23 22:02:35 -0700 | [diff] [blame] | 107 | |
Andrew de Quincey | d3b9d62 | 2006-04-25 05:36:19 -0300 | [diff] [blame] | 108 | dvb_usb_tuner_calc_regs(fe,fep,b,5); |
Johannes Stezenbach | 776338e | 2005-06-23 22:02:35 -0700 | [diff] [blame] | 109 | |
Patrick Boettcher | 4d43e13 | 2006-09-30 06:53:48 -0300 | [diff] [blame] | 110 | if (adap->tuner_pass_ctrl) |
| 111 | adap->tuner_pass_ctrl(fe, 1, adap->pll_addr); |
Johannes Stezenbach | 776338e | 2005-06-23 22:02:35 -0700 | [diff] [blame] | 112 | |
Patrick Boettcher | dea7486 | 2006-05-14 05:01:31 -0300 | [diff] [blame] | 113 | if (fe->ops.i2c_gate_ctrl) |
| 114 | fe->ops.i2c_gate_ctrl(fe, 1); |
Patrick Boettcher | 4d43e13 | 2006-09-30 06:53:48 -0300 | [diff] [blame] | 115 | |
| 116 | if (i2c_transfer(&adap->dev->i2c_adap, &msg, 1) != 1) { |
Johannes Stezenbach | 776338e | 2005-06-23 22:02:35 -0700 | [diff] [blame] | 117 | err("tuner i2c write failed for pll_set."); |
| 118 | ret = -EREMOTEIO; |
| 119 | } |
| 120 | msleep(1); |
| 121 | |
Patrick Boettcher | 4d43e13 | 2006-09-30 06:53:48 -0300 | [diff] [blame] | 122 | if (adap->tuner_pass_ctrl) |
| 123 | adap->tuner_pass_ctrl(fe, 0, adap->pll_addr); |
Johannes Stezenbach | 776338e | 2005-06-23 22:02:35 -0700 | [diff] [blame] | 124 | |
| 125 | return ret; |
| 126 | } |
Andrew de Quincey | d3b9d62 | 2006-04-25 05:36:19 -0300 | [diff] [blame] | 127 | EXPORT_SYMBOL(dvb_usb_tuner_set_params_i2c); |