mt2060.c revision 4de2730a1d2742aea67f24d1041bdc5e0bad37e3
14de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher/* 24de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher * Driver for Microtune MT2060 "Single chip dual conversion broadband tuner" 34de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher * 44de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher * Copyright (c) 2006 Olivier DANET <odanet@caramail.com> 54de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher * 64de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher * This program is free software; you can redistribute it and/or modify 74de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher * it under the terms of the GNU General Public License as published by 84de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher * the Free Software Foundation; either version 2 of the License, or 94de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher * (at your option) any later version. 104de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher * 114de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher * This program is distributed in the hope that it will be useful, 124de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher * but WITHOUT ANY WARRANTY; without even the implied warranty of 134de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 144de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher * 154de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher * GNU General Public License for more details. 164de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher * 174de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher * You should have received a copy of the GNU General Public License 184de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher * along with this program; if not, write to the Free Software 194de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.= 204de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher */ 214de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 224de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher/* See mt2060_priv.h for details */ 234de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 244de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher/* In that file, frequencies are expressed in kiloHertz to avoid 32 bits overflows */ 254de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 264de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher#include <linux/module.h> 274de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher#include <linux/moduleparam.h> 284de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher#include <linux/delay.h> 294de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher#include <linux/dvb/frontend.h> 304de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher#include "mt2060.h" 314de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher#include "mt2060_priv.h" 324de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 334de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcherstatic int debug=0; 344de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettchermodule_param(debug, int, 0644); 354de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick BoettcherMODULE_PARM_DESC(debug, "Turn on/off debugging (default:off)."); 364de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 374de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher#define dprintk(args...) do { if (debug) printk(KERN_DEBUG "MT2060: " args); printk("\n"); } while (0) 384de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 394de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher// Reads a single register 404de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcherstatic int mt2060_readreg(struct mt2060_state *state, u8 reg, u8 *val) 414de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher{ 424de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher struct i2c_msg msg[2] = { 434de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher { .addr = state->config->i2c_address, .flags = 0, .buf = ®, .len = 1 }, 444de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher { .addr = state->config->i2c_address, .flags = I2C_M_RD, .buf = val, .len = 1 }, 454de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher }; 464de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 474de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher if (i2c_transfer(state->i2c, msg, 2) != 2) { 484de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher printk(KERN_WARNING "mt2060 I2C read failed\n"); 494de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher return -EREMOTEIO; 504de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher } 514de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher return 0; 524de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher} 534de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 544de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher// Writes a single register 554de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcherstatic int mt2060_writereg(struct mt2060_state *state, u8 reg, u8 val) 564de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher{ 574de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher u8 buf[2]; 584de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher struct i2c_msg msg = { 594de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher .addr = state->config->i2c_address, .flags = 0, .buf = buf, .len = 2 604de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher }; 614de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher buf[0]=reg; 624de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher buf[1]=val; 634de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 644de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher if (i2c_transfer(state->i2c, &msg, 1) != 1) { 654de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher printk(KERN_WARNING "mt2060 I2C write failed\n"); 664de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher return -EREMOTEIO; 674de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher } 684de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher return 0; 694de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher} 704de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 714de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher// Writes a set of consecutive registers 724de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcherstatic int mt2060_writeregs(struct mt2060_state *state,u8 *buf, u8 len) 734de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher{ 744de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher struct i2c_msg msg = { 754de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher .addr = state->config->i2c_address, .flags = 0, .buf = buf, .len = len 764de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher }; 774de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher if (i2c_transfer(state->i2c, &msg, 1) != 1) { 784de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher printk(KERN_WARNING "mt2060 I2C write failed (len=%i)\n",(int)len); 794de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher return -EREMOTEIO; 804de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher } 814de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher return 0; 824de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher} 834de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 844de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher// Initialisation sequences 854de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher// LNABAND=3, NUM1=0x3C, DIV1=0x74, NUM2=0x1080, DIV2=0x49 864de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcherstatic u8 mt2060_config1[] = { 874de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher REG_LO1C1, 884de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 0x3F, 0x74, 0x00, 0x08, 0x93 894de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher}; 904de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 914de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher// FMCG=2, GP2=0, GP1=0 924de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcherstatic u8 mt2060_config2[] = { 934de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher REG_MISC_CTRL, 944de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 0x20, 0x1E, 0x30, 0xff, 0x80, 0xff, 0x00, 0x2c, 0x42 954de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher}; 964de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 974de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher// VGAG=3, V1CSE=1 984de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcherstatic u8 mt2060_config3[] = { 994de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher REG_VGAG, 1004de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 0x33 1014de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher}; 1024de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 1034de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcherint mt2060_init(struct mt2060_state *state) 1044de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher{ 1054de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher if (mt2060_writeregs(state,mt2060_config1,sizeof(mt2060_config1))) 1064de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher return -EREMOTEIO; 1074de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher if (mt2060_writeregs(state,mt2060_config3,sizeof(mt2060_config3))) 1084de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher return -EREMOTEIO; 1094de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher return 0; 1104de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher} 1114de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick BoettcherEXPORT_SYMBOL(mt2060_init); 1124de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 1134de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher#ifdef MT2060_SPURCHECK 1144de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher/* The function below calculates the frequency offset between the output frequency if2 1154de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher and the closer cross modulation subcarrier between lo1 and lo2 up to the tenth harmonic */ 1164de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcherstatic int mt2060_spurcalc(u32 lo1,u32 lo2,u32 if2) 1174de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher{ 1184de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher int I,J; 1194de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher int dia,diamin,diff; 1204de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher diamin=1000000; 1214de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher for (I = 1; I < 10; I++) { 1224de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher J = ((2*I*lo1)/lo2+1)/2; 1234de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher diff = I*(int)lo1-J*(int)lo2; 1244de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher if (diff < 0) diff=-diff; 1254de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher dia = (diff-(int)if2); 1264de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher if (dia < 0) dia=-dia; 1274de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher if (diamin > dia) diamin=dia; 1284de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher } 1294de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher return diamin; 1304de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher} 1314de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 1324de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher#define BANDWIDTH 4000 // kHz 1334de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 1344de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher/* Calculates the frequency offset to add to avoid spurs. Returns 0 if no offset is needed */ 1354de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcherstatic int mt2060_spurcheck(u32 lo1,u32 lo2,u32 if2) 1364de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher{ 1374de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher u32 Spur,Sp1,Sp2; 1384de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher int I,J; 1394de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher I=0; 1404de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher J=1000; 1414de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 1424de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher Spur=mt2060_spurcalc(lo1,lo2,if2); 1434de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher if (Spur < BANDWIDTH) { 1444de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher /* Potential spurs detected */ 1454de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher dprintk("Spurs before : f_lo1: %d f_lo2: %d (kHz)", 1464de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher (int)lo1,(int)lo2); 1474de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher I=1000; 1484de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher Sp1 = mt2060_spurcalc(lo1+I,lo2+I,if2); 1494de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher Sp2 = mt2060_spurcalc(lo1-I,lo2-I,if2); 1504de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 1514de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher if (Sp1 < Sp2) { 1524de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher J=-J; I=-I; Spur=Sp2; 1534de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher } else 1544de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher Spur=Sp1; 1554de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 1564de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher while (Spur < BANDWIDTH) { 1574de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher I += J; 1584de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher Spur = mt2060_spurcalc(lo1+I,lo2+I,if2); 1594de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher } 1604de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher dprintk("Spurs after : f_lo1: %d f_lo2: %d (kHz)", 1614de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher (int)(lo1+I),(int)(lo2+I)); 1624de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher } 1634de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher return I; 1644de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher} 1654de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher#endif 1664de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 1674de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher#define IF2 36150 // IF2 frequency = 36.150 MHz 1684de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher#define FREF 16000 // Quartz oscillator 16 MHz 1694de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 1704de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcherint mt2060_set(struct mt2060_state *state, struct dvb_frontend_parameters *fep) 1714de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher{ 1724de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher int ret=0; 1734de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher int i=0; 1744de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher u32 freq; 1754de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher u8 lnaband; 1764de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher u32 f_lo1,f_lo2; 1774de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher u32 div1,num1,div2,num2; 1784de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher u8 b[8]; 1794de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher u32 if1; 1804de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 1814de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher if1 = state->if1_freq; 1824de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher b[0] = REG_LO1B1; 1834de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher b[1] = 0xFF; 1844de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher mt2060_writeregs(state,b,2); 1854de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 1864de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher freq = fep->frequency / 1000; // Hz -> kHz 1874de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 1884de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher f_lo1 = freq + if1 * 1000; 1894de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher f_lo1 = (f_lo1/250)*250; 1904de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher f_lo2 = f_lo1 - freq - IF2; 1914de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher f_lo2 = (f_lo2/50)*50; 1924de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 1934de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher#ifdef MT2060_SPURCHECK 1944de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher // LO-related spurs detection and correction 1954de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher num1 = mt2060_spurcheck(f_lo1,f_lo2,IF2); 1964de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher f_lo1 += num1; 1974de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher f_lo2 += num1; 1984de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher#endif 1994de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher //Frequency LO1 = 16MHz * (DIV1 + NUM1/64 ) 2004de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher div1 = f_lo1 / FREF; 2014de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher num1 = (64 * (f_lo1 % FREF) )/FREF; 2024de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 2034de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher // Frequency LO2 = 16MHz * (DIV2 + NUM2/8192 ) 2044de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher div2 = f_lo2 / FREF; 2054de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher num2 = (16384 * (f_lo2 % FREF) /FREF +1)/2; 2064de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 2074de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher if (freq <= 95000) lnaband = 0xB0; else 2084de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher if (freq <= 180000) lnaband = 0xA0; else 2094de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher if (freq <= 260000) lnaband = 0x90; else 2104de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher if (freq <= 335000) lnaband = 0x80; else 2114de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher if (freq <= 425000) lnaband = 0x70; else 2124de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher if (freq <= 480000) lnaband = 0x60; else 2134de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher if (freq <= 570000) lnaband = 0x50; else 2144de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher if (freq <= 645000) lnaband = 0x40; else 2154de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher if (freq <= 730000) lnaband = 0x30; else 2164de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher if (freq <= 810000) lnaband = 0x20; else lnaband = 0x10; 2174de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 2184de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher b[0] = REG_LO1C1; 2194de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher b[1] = lnaband | ((num1 >>2) & 0x0F); 2204de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher b[2] = div1; 2214de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher b[3] = (num2 & 0x0F) | ((num1 & 3) << 4); 2224de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher b[4] = num2 >> 4; 2234de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher b[5] = ((num2 >>12) & 1) | (div2 << 1); 2244de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 2254de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher dprintk("IF1: %dMHz",(int)if1); 2264de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher dprintk("PLL freq: %d f_lo1: %d f_lo2: %d (kHz)",(int)freq,(int)f_lo1,(int)f_lo2); 2274de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher dprintk("PLL div1: %d num1: %d div2: %d num2: %d",(int)div1,(int)num1,(int)div2,(int)num2); 2284de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher dprintk("PLL [1..5]: %2x %2x %2x %2x %2x",(int)b[1],(int)b[2],(int)b[3],(int)b[4],(int)b[5]); 2294de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 2304de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher mt2060_writeregs(state,b,6); 2314de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 2324de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher //Waits for pll lock or timeout 2334de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher i=0; 2344de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher do { 2354de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher mt2060_readreg(state,REG_LO_STATUS,b); 2364de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher if ((b[0] & 0x88)==0x88) break; 2374de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher msleep(4); 2384de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher i++; 2394de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher } while (i<10); 2404de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 2414de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher return ret; 2424de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher} 2434de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick BoettcherEXPORT_SYMBOL(mt2060_set); 2444de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 2454de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher/* from usbsnoop.log */ 2464de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcherstatic void mt2060_calibrate(struct mt2060_state *state) 2474de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher{ 2484de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher u8 b = 0; 2494de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher int i = 0; 2504de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 2514de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher if (mt2060_writeregs(state,mt2060_config1,sizeof(mt2060_config1))) 2524de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher return; 2534de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher if (mt2060_writeregs(state,mt2060_config2,sizeof(mt2060_config2))) 2544de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher return; 2554de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 2564de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher do { 2574de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher b |= (1 << 6); // FM1SS; 2584de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher mt2060_writereg(state, REG_LO2C1,b); 2594de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher msleep(20); 2604de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 2614de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher if (i == 0) { 2624de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher b |= (1 << 7); // FM1CA; 2634de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher mt2060_writereg(state, REG_LO2C1,b); 2644de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher b &= ~(1 << 7); // FM1CA; 2654de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher msleep(20); 2664de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher } 2674de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 2684de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher b &= ~(1 << 6); // FM1SS 2694de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher mt2060_writereg(state, REG_LO2C1,b); 2704de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 2714de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher msleep(20); 2724de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher i++; 2734de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher } while (i < 9); 2744de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 2754de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher i = 0; 2764de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher while (i++ < 10 && mt2060_readreg(state, REG_MISC_STAT, &b) == 0 && (b & (1 << 6)) == 0) 2774de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher msleep(20); 2784de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 2794de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher if (i < 10) { 2804de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher mt2060_readreg(state, REG_FM_FREQ, &state->fmfreq); // now find out, what is fmreq used for :) 2814de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher dprintk("calibration was successful: %d",state->fmfreq); 2824de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher } else 2834de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher dprintk("FMCAL timed out"); 2844de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher} 2854de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 2864de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher/* This functions tries to identify a MT2060 tuner by reading the PART/REV register. This is hasty. */ 2874de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcherint mt2060_attach(struct mt2060_state *state, struct mt2060_config *config, struct i2c_adapter *i2c,u16 if1) 2884de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher{ 2894de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher u8 id = 0; 2904de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher memset(state,0,sizeof(struct mt2060_state)); 2914de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 2924de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher state->config = config; 2934de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher state->i2c = i2c; 2944de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher state->if1_freq = if1; 2954de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 2964de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher if (mt2060_readreg(state,REG_PART_REV,&id) != 0) 2974de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher return -ENODEV; 2984de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 2994de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher if (id != PART_REV) 3004de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher return -ENODEV; 3014de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 3024de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher printk(KERN_INFO "MT2060: successfully identified\n"); 3034de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 3044de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher mt2060_calibrate(state); 3054de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 3064de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher return 0; 3074de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher} 3084de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick BoettcherEXPORT_SYMBOL(mt2060_attach); 3094de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick Boettcher 3104de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick BoettcherMODULE_AUTHOR("Olivier DANET"); 3114de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick BoettcherMODULE_DESCRIPTION("Microtune MT2060 silicon tuner driver"); 3124de2730a1d2742aea67f24d1041bdc5e0bad37e3Patrick BoettcherMODULE_LICENSE("GPL"); 313