1253 lines
29 KiB
C
1253 lines
29 KiB
C
/*
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* tda18271c2dd: Driver for the TDA18271C2 tuner
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*
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* Copyright (C) 2010 Digital Devices GmbH
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*
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 only, as published by the Free Software Foundation.
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*
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* To obtain the license, point your browser to
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* http://www.gnu.org/copyleft/gpl.html
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/firmware.h>
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#include <linux/i2c.h>
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#include <asm/div64.h>
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#include "dvb_frontend.h"
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#include "tda18271c2dd.h"
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/* Max transfer size done by I2C transfer functions */
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#define MAX_XFER_SIZE 64
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struct SStandardParam {
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s32 m_IFFrequency;
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u32 m_BandWidth;
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u8 m_EP3_4_0;
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u8 m_EB22;
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};
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struct SMap {
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u32 m_Frequency;
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u8 m_Param;
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};
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struct SMapI {
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u32 m_Frequency;
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s32 m_Param;
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};
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struct SMap2 {
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u32 m_Frequency;
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u8 m_Param1;
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u8 m_Param2;
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};
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struct SRFBandMap {
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u32 m_RF_max;
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u32 m_RF1_Default;
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u32 m_RF2_Default;
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u32 m_RF3_Default;
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};
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enum ERegister {
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ID = 0,
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TM,
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PL,
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EP1, EP2, EP3, EP4, EP5,
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CPD, CD1, CD2, CD3,
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MPD, MD1, MD2, MD3,
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EB1, EB2, EB3, EB4, EB5, EB6, EB7, EB8, EB9, EB10,
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EB11, EB12, EB13, EB14, EB15, EB16, EB17, EB18, EB19, EB20,
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EB21, EB22, EB23,
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NUM_REGS
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};
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struct tda_state {
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struct i2c_adapter *i2c;
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u8 adr;
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u32 m_Frequency;
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u32 IF;
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u8 m_IFLevelAnalog;
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u8 m_IFLevelDigital;
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u8 m_IFLevelDVBC;
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u8 m_IFLevelDVBT;
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u8 m_EP4;
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u8 m_EP3_Standby;
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bool m_bMaster;
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s32 m_SettlingTime;
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u8 m_Regs[NUM_REGS];
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/* Tracking filter settings for band 0..6 */
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u32 m_RF1[7];
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s32 m_RF_A1[7];
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s32 m_RF_B1[7];
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u32 m_RF2[7];
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s32 m_RF_A2[7];
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s32 m_RF_B2[7];
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u32 m_RF3[7];
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u8 m_TMValue_RFCal; /* Calibration temperatur */
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bool m_bFMInput; /* true to use Pin 8 for FM Radio */
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};
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static int PowerScan(struct tda_state *state,
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u8 RFBand, u32 RF_in,
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u32 *pRF_Out, bool *pbcal);
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static int i2c_readn(struct i2c_adapter *adapter, u8 adr, u8 *data, int len)
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{
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struct i2c_msg msgs[1] = {{.addr = adr, .flags = I2C_M_RD,
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.buf = data, .len = len} };
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return (i2c_transfer(adapter, msgs, 1) == 1) ? 0 : -1;
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}
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static int i2c_write(struct i2c_adapter *adap, u8 adr, u8 *data, int len)
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{
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struct i2c_msg msg = {.addr = adr, .flags = 0,
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.buf = data, .len = len};
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if (i2c_transfer(adap, &msg, 1) != 1) {
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printk(KERN_ERR "tda18271c2dd: i2c write error at addr %i\n", adr);
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return -1;
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}
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return 0;
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}
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static int WriteRegs(struct tda_state *state,
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u8 SubAddr, u8 *Regs, u16 nRegs)
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{
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u8 data[MAX_XFER_SIZE];
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if (1 + nRegs > sizeof(data)) {
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printk(KERN_WARNING
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"%s: i2c wr: len=%d is too big!\n",
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KBUILD_MODNAME, nRegs);
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return -EINVAL;
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}
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data[0] = SubAddr;
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memcpy(data + 1, Regs, nRegs);
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return i2c_write(state->i2c, state->adr, data, nRegs + 1);
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}
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static int WriteReg(struct tda_state *state, u8 SubAddr, u8 Reg)
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{
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u8 msg[2] = {SubAddr, Reg};
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return i2c_write(state->i2c, state->adr, msg, 2);
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}
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static int Read(struct tda_state *state, u8 * Regs)
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{
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return i2c_readn(state->i2c, state->adr, Regs, 16);
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}
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static int ReadExtented(struct tda_state *state, u8 * Regs)
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{
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return i2c_readn(state->i2c, state->adr, Regs, NUM_REGS);
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}
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static int UpdateRegs(struct tda_state *state, u8 RegFrom, u8 RegTo)
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{
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return WriteRegs(state, RegFrom,
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&state->m_Regs[RegFrom], RegTo-RegFrom+1);
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}
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static int UpdateReg(struct tda_state *state, u8 Reg)
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{
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return WriteReg(state, Reg, state->m_Regs[Reg]);
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}
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#include "tda18271c2dd_maps.h"
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static void reset(struct tda_state *state)
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{
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u32 ulIFLevelAnalog = 0;
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u32 ulIFLevelDigital = 2;
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u32 ulIFLevelDVBC = 7;
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u32 ulIFLevelDVBT = 6;
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u32 ulXTOut = 0;
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u32 ulStandbyMode = 0x06; /* Send in stdb, but leave osc on */
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u32 ulSlave = 0;
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u32 ulFMInput = 0;
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u32 ulSettlingTime = 100;
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state->m_Frequency = 0;
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state->m_SettlingTime = 100;
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state->m_IFLevelAnalog = (ulIFLevelAnalog & 0x07) << 2;
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state->m_IFLevelDigital = (ulIFLevelDigital & 0x07) << 2;
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state->m_IFLevelDVBC = (ulIFLevelDVBC & 0x07) << 2;
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state->m_IFLevelDVBT = (ulIFLevelDVBT & 0x07) << 2;
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state->m_EP4 = 0x20;
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if (ulXTOut != 0)
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state->m_EP4 |= 0x40;
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state->m_EP3_Standby = ((ulStandbyMode & 0x07) << 5) | 0x0F;
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state->m_bMaster = (ulSlave == 0);
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state->m_SettlingTime = ulSettlingTime;
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state->m_bFMInput = (ulFMInput == 2);
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}
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static bool SearchMap1(struct SMap Map[],
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u32 Frequency, u8 *pParam)
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{
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int i = 0;
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while ((Map[i].m_Frequency != 0) && (Frequency > Map[i].m_Frequency))
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i += 1;
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if (Map[i].m_Frequency == 0)
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return false;
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*pParam = Map[i].m_Param;
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return true;
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}
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static bool SearchMap2(struct SMapI Map[],
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u32 Frequency, s32 *pParam)
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{
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int i = 0;
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while ((Map[i].m_Frequency != 0) &&
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(Frequency > Map[i].m_Frequency))
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i += 1;
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if (Map[i].m_Frequency == 0)
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return false;
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*pParam = Map[i].m_Param;
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return true;
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}
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static bool SearchMap3(struct SMap2 Map[], u32 Frequency,
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u8 *pParam1, u8 *pParam2)
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{
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int i = 0;
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while ((Map[i].m_Frequency != 0) &&
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(Frequency > Map[i].m_Frequency))
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i += 1;
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if (Map[i].m_Frequency == 0)
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return false;
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*pParam1 = Map[i].m_Param1;
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*pParam2 = Map[i].m_Param2;
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return true;
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}
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static bool SearchMap4(struct SRFBandMap Map[],
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u32 Frequency, u8 *pRFBand)
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{
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int i = 0;
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while (i < 7 && (Frequency > Map[i].m_RF_max))
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i += 1;
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if (i == 7)
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return false;
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*pRFBand = i;
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return true;
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}
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static int ThermometerRead(struct tda_state *state, u8 *pTM_Value)
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{
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int status = 0;
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do {
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u8 Regs[16];
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state->m_Regs[TM] |= 0x10;
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status = UpdateReg(state, TM);
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if (status < 0)
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break;
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status = Read(state, Regs);
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if (status < 0)
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break;
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if (((Regs[TM] & 0x0F) == 0 && (Regs[TM] & 0x20) == 0x20) ||
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((Regs[TM] & 0x0F) == 8 && (Regs[TM] & 0x20) == 0x00)) {
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state->m_Regs[TM] ^= 0x20;
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status = UpdateReg(state, TM);
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if (status < 0)
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break;
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msleep(10);
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status = Read(state, Regs);
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if (status < 0)
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break;
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}
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*pTM_Value = (Regs[TM] & 0x20)
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? m_Thermometer_Map_2[Regs[TM] & 0x0F]
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: m_Thermometer_Map_1[Regs[TM] & 0x0F] ;
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state->m_Regs[TM] &= ~0x10; /* Thermometer off */
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status = UpdateReg(state, TM);
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if (status < 0)
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break;
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state->m_Regs[EP4] &= ~0x03; /* CAL_mode = 0 ????????? */
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status = UpdateReg(state, EP4);
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if (status < 0)
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break;
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} while (0);
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return status;
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}
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static int StandBy(struct tda_state *state)
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{
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int status = 0;
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do {
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state->m_Regs[EB12] &= ~0x20; /* PD_AGC1_Det = 0 */
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status = UpdateReg(state, EB12);
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if (status < 0)
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break;
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state->m_Regs[EB18] &= ~0x83; /* AGC1_loop_off = 0, AGC1_Gain = 6 dB */
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status = UpdateReg(state, EB18);
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if (status < 0)
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break;
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state->m_Regs[EB21] |= 0x03; /* AGC2_Gain = -6 dB */
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state->m_Regs[EP3] = state->m_EP3_Standby;
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status = UpdateReg(state, EP3);
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if (status < 0)
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break;
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state->m_Regs[EB23] &= ~0x06; /* ForceLP_Fc2_En = 0, LP_Fc[2] = 0 */
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status = UpdateRegs(state, EB21, EB23);
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if (status < 0)
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break;
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} while (0);
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return status;
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}
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static int CalcMainPLL(struct tda_state *state, u32 freq)
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{
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u8 PostDiv;
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u8 Div;
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u64 OscFreq;
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u32 MainDiv;
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if (!SearchMap3(m_Main_PLL_Map, freq, &PostDiv, &Div))
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return -EINVAL;
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OscFreq = (u64) freq * (u64) Div;
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OscFreq *= (u64) 16384;
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do_div(OscFreq, (u64)16000000);
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MainDiv = OscFreq;
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state->m_Regs[MPD] = PostDiv & 0x77;
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state->m_Regs[MD1] = ((MainDiv >> 16) & 0x7F);
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state->m_Regs[MD2] = ((MainDiv >> 8) & 0xFF);
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state->m_Regs[MD3] = (MainDiv & 0xFF);
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return UpdateRegs(state, MPD, MD3);
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}
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static int CalcCalPLL(struct tda_state *state, u32 freq)
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{
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u8 PostDiv;
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u8 Div;
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u64 OscFreq;
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u32 CalDiv;
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if (!SearchMap3(m_Cal_PLL_Map, freq, &PostDiv, &Div))
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return -EINVAL;
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OscFreq = (u64)freq * (u64)Div;
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/* CalDiv = u32( OscFreq * 16384 / 16000000 ); */
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OscFreq *= (u64)16384;
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do_div(OscFreq, (u64)16000000);
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CalDiv = OscFreq;
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state->m_Regs[CPD] = PostDiv;
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state->m_Regs[CD1] = ((CalDiv >> 16) & 0xFF);
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state->m_Regs[CD2] = ((CalDiv >> 8) & 0xFF);
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state->m_Regs[CD3] = (CalDiv & 0xFF);
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return UpdateRegs(state, CPD, CD3);
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}
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static int CalibrateRF(struct tda_state *state,
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u8 RFBand, u32 freq, s32 *pCprog)
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{
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int status = 0;
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u8 Regs[NUM_REGS];
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do {
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u8 BP_Filter = 0;
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u8 GainTaper = 0;
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u8 RFC_K = 0;
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u8 RFC_M = 0;
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state->m_Regs[EP4] &= ~0x03; /* CAL_mode = 0 */
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status = UpdateReg(state, EP4);
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if (status < 0)
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break;
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state->m_Regs[EB18] |= 0x03; /* AGC1_Gain = 3 */
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status = UpdateReg(state, EB18);
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if (status < 0)
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break;
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/* Switching off LT (as datasheet says) causes calibration on C1 to fail */
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/* (Readout of Cprog is allways 255) */
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if (state->m_Regs[ID] != 0x83) /* C1: ID == 83, C2: ID == 84 */
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state->m_Regs[EP3] |= 0x40; /* SM_LT = 1 */
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if (!(SearchMap1(m_BP_Filter_Map, freq, &BP_Filter) &&
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SearchMap1(m_GainTaper_Map, freq, &GainTaper) &&
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SearchMap3(m_KM_Map, freq, &RFC_K, &RFC_M)))
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return -EINVAL;
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state->m_Regs[EP1] = (state->m_Regs[EP1] & ~0x07) | BP_Filter;
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state->m_Regs[EP2] = (RFBand << 5) | GainTaper;
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state->m_Regs[EB13] = (state->m_Regs[EB13] & ~0x7C) | (RFC_K << 4) | (RFC_M << 2);
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status = UpdateRegs(state, EP1, EP3);
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if (status < 0)
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break;
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status = UpdateReg(state, EB13);
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if (status < 0)
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break;
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state->m_Regs[EB4] |= 0x20; /* LO_ForceSrce = 1 */
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status = UpdateReg(state, EB4);
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if (status < 0)
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break;
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state->m_Regs[EB7] |= 0x20; /* CAL_ForceSrce = 1 */
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status = UpdateReg(state, EB7);
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if (status < 0)
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break;
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state->m_Regs[EB14] = 0; /* RFC_Cprog = 0 */
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status = UpdateReg(state, EB14);
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if (status < 0)
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break;
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state->m_Regs[EB20] &= ~0x20; /* ForceLock = 0; */
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status = UpdateReg(state, EB20);
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if (status < 0)
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break;
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state->m_Regs[EP4] |= 0x03; /* CAL_Mode = 3 */
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status = UpdateRegs(state, EP4, EP5);
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if (status < 0)
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break;
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status = CalcCalPLL(state, freq);
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if (status < 0)
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break;
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status = CalcMainPLL(state, freq + 1000000);
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if (status < 0)
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break;
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msleep(5);
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status = UpdateReg(state, EP2);
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if (status < 0)
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break;
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status = UpdateReg(state, EP1);
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if (status < 0)
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break;
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status = UpdateReg(state, EP2);
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if (status < 0)
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break;
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status = UpdateReg(state, EP1);
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if (status < 0)
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break;
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state->m_Regs[EB4] &= ~0x20; /* LO_ForceSrce = 0 */
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status = UpdateReg(state, EB4);
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if (status < 0)
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break;
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state->m_Regs[EB7] &= ~0x20; /* CAL_ForceSrce = 0 */
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status = UpdateReg(state, EB7);
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if (status < 0)
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break;
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msleep(10);
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state->m_Regs[EB20] |= 0x20; /* ForceLock = 1; */
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status = UpdateReg(state, EB20);
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if (status < 0)
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break;
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msleep(60);
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state->m_Regs[EP4] &= ~0x03; /* CAL_Mode = 0 */
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state->m_Regs[EP3] &= ~0x40; /* SM_LT = 0 */
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state->m_Regs[EB18] &= ~0x03; /* AGC1_Gain = 0 */
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status = UpdateReg(state, EB18);
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if (status < 0)
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break;
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status = UpdateRegs(state, EP3, EP4);
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if (status < 0)
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break;
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status = UpdateReg(state, EP1);
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if (status < 0)
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break;
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|
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status = ReadExtented(state, Regs);
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if (status < 0)
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break;
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*pCprog = Regs[EB14];
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} while (0);
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return status;
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|
}
|
|
|
|
static int RFTrackingFiltersInit(struct tda_state *state,
|
|
u8 RFBand)
|
|
{
|
|
int status = 0;
|
|
|
|
u32 RF1 = m_RF_Band_Map[RFBand].m_RF1_Default;
|
|
u32 RF2 = m_RF_Band_Map[RFBand].m_RF2_Default;
|
|
u32 RF3 = m_RF_Band_Map[RFBand].m_RF3_Default;
|
|
bool bcal = false;
|
|
|
|
s32 Cprog_cal1 = 0;
|
|
s32 Cprog_table1 = 0;
|
|
s32 Cprog_cal2 = 0;
|
|
s32 Cprog_table2 = 0;
|
|
s32 Cprog_cal3 = 0;
|
|
s32 Cprog_table3 = 0;
|
|
|
|
state->m_RF_A1[RFBand] = 0;
|
|
state->m_RF_B1[RFBand] = 0;
|
|
state->m_RF_A2[RFBand] = 0;
|
|
state->m_RF_B2[RFBand] = 0;
|
|
|
|
do {
|
|
status = PowerScan(state, RFBand, RF1, &RF1, &bcal);
|
|
if (status < 0)
|
|
break;
|
|
if (bcal) {
|
|
status = CalibrateRF(state, RFBand, RF1, &Cprog_cal1);
|
|
if (status < 0)
|
|
break;
|
|
}
|
|
SearchMap2(m_RF_Cal_Map, RF1, &Cprog_table1);
|
|
if (!bcal)
|
|
Cprog_cal1 = Cprog_table1;
|
|
state->m_RF_B1[RFBand] = Cprog_cal1 - Cprog_table1;
|
|
/* state->m_RF_A1[RF_Band] = ???? */
|
|
|
|
if (RF2 == 0)
|
|
break;
|
|
|
|
status = PowerScan(state, RFBand, RF2, &RF2, &bcal);
|
|
if (status < 0)
|
|
break;
|
|
if (bcal) {
|
|
status = CalibrateRF(state, RFBand, RF2, &Cprog_cal2);
|
|
if (status < 0)
|
|
break;
|
|
}
|
|
SearchMap2(m_RF_Cal_Map, RF2, &Cprog_table2);
|
|
if (!bcal)
|
|
Cprog_cal2 = Cprog_table2;
|
|
|
|
state->m_RF_A1[RFBand] =
|
|
(Cprog_cal2 - Cprog_table2 - Cprog_cal1 + Cprog_table1) /
|
|
((s32)(RF2) - (s32)(RF1));
|
|
|
|
if (RF3 == 0)
|
|
break;
|
|
|
|
status = PowerScan(state, RFBand, RF3, &RF3, &bcal);
|
|
if (status < 0)
|
|
break;
|
|
if (bcal) {
|
|
status = CalibrateRF(state, RFBand, RF3, &Cprog_cal3);
|
|
if (status < 0)
|
|
break;
|
|
}
|
|
SearchMap2(m_RF_Cal_Map, RF3, &Cprog_table3);
|
|
if (!bcal)
|
|
Cprog_cal3 = Cprog_table3;
|
|
state->m_RF_A2[RFBand] = (Cprog_cal3 - Cprog_table3 - Cprog_cal2 + Cprog_table2) / ((s32)(RF3) - (s32)(RF2));
|
|
state->m_RF_B2[RFBand] = Cprog_cal2 - Cprog_table2;
|
|
|
|
} while (0);
|
|
|
|
state->m_RF1[RFBand] = RF1;
|
|
state->m_RF2[RFBand] = RF2;
|
|
state->m_RF3[RFBand] = RF3;
|
|
|
|
#if 0
|
|
printk(KERN_ERR "tda18271c2dd: %s %d RF1 = %d A1 = %d B1 = %d RF2 = %d A2 = %d B2 = %d RF3 = %d\n", __func__,
|
|
RFBand, RF1, state->m_RF_A1[RFBand], state->m_RF_B1[RFBand], RF2,
|
|
state->m_RF_A2[RFBand], state->m_RF_B2[RFBand], RF3);
|
|
#endif
|
|
|
|
return status;
|
|
}
|
|
|
|
static int PowerScan(struct tda_state *state,
|
|
u8 RFBand, u32 RF_in, u32 *pRF_Out, bool *pbcal)
|
|
{
|
|
int status = 0;
|
|
do {
|
|
u8 Gain_Taper = 0;
|
|
s32 RFC_Cprog = 0;
|
|
u8 CID_Target = 0;
|
|
u8 CountLimit = 0;
|
|
u32 freq_MainPLL;
|
|
u8 Regs[NUM_REGS];
|
|
u8 CID_Gain;
|
|
s32 Count = 0;
|
|
int sign = 1;
|
|
bool wait = false;
|
|
|
|
if (!(SearchMap2(m_RF_Cal_Map, RF_in, &RFC_Cprog) &&
|
|
SearchMap1(m_GainTaper_Map, RF_in, &Gain_Taper) &&
|
|
SearchMap3(m_CID_Target_Map, RF_in, &CID_Target, &CountLimit))) {
|
|
|
|
printk(KERN_ERR "tda18271c2dd: %s Search map failed\n", __func__);
|
|
return -EINVAL;
|
|
}
|
|
|
|
state->m_Regs[EP2] = (RFBand << 5) | Gain_Taper;
|
|
state->m_Regs[EB14] = (RFC_Cprog);
|
|
status = UpdateReg(state, EP2);
|
|
if (status < 0)
|
|
break;
|
|
status = UpdateReg(state, EB14);
|
|
if (status < 0)
|
|
break;
|
|
|
|
freq_MainPLL = RF_in + 1000000;
|
|
status = CalcMainPLL(state, freq_MainPLL);
|
|
if (status < 0)
|
|
break;
|
|
msleep(5);
|
|
state->m_Regs[EP4] = (state->m_Regs[EP4] & ~0x03) | 1; /* CAL_mode = 1 */
|
|
status = UpdateReg(state, EP4);
|
|
if (status < 0)
|
|
break;
|
|
status = UpdateReg(state, EP2); /* Launch power measurement */
|
|
if (status < 0)
|
|
break;
|
|
status = ReadExtented(state, Regs);
|
|
if (status < 0)
|
|
break;
|
|
CID_Gain = Regs[EB10] & 0x3F;
|
|
state->m_Regs[ID] = Regs[ID]; /* Chip version, (needed for C1 workarround in CalibrateRF) */
|
|
|
|
*pRF_Out = RF_in;
|
|
|
|
while (CID_Gain < CID_Target) {
|
|
freq_MainPLL = RF_in + sign * Count + 1000000;
|
|
status = CalcMainPLL(state, freq_MainPLL);
|
|
if (status < 0)
|
|
break;
|
|
msleep(wait ? 5 : 1);
|
|
wait = false;
|
|
status = UpdateReg(state, EP2); /* Launch power measurement */
|
|
if (status < 0)
|
|
break;
|
|
status = ReadExtented(state, Regs);
|
|
if (status < 0)
|
|
break;
|
|
CID_Gain = Regs[EB10] & 0x3F;
|
|
Count += 200000;
|
|
|
|
if (Count < CountLimit * 100000)
|
|
continue;
|
|
if (sign < 0)
|
|
break;
|
|
|
|
sign = -sign;
|
|
Count = 200000;
|
|
wait = true;
|
|
}
|
|
status = status;
|
|
if (status < 0)
|
|
break;
|
|
if (CID_Gain >= CID_Target) {
|
|
*pbcal = true;
|
|
*pRF_Out = freq_MainPLL - 1000000;
|
|
} else
|
|
*pbcal = false;
|
|
} while (0);
|
|
|
|
return status;
|
|
}
|
|
|
|
static int PowerScanInit(struct tda_state *state)
|
|
{
|
|
int status = 0;
|
|
do {
|
|
state->m_Regs[EP3] = (state->m_Regs[EP3] & ~0x1F) | 0x12;
|
|
state->m_Regs[EP4] = (state->m_Regs[EP4] & ~0x1F); /* If level = 0, Cal mode = 0 */
|
|
status = UpdateRegs(state, EP3, EP4);
|
|
if (status < 0)
|
|
break;
|
|
state->m_Regs[EB18] = (state->m_Regs[EB18] & ~0x03); /* AGC 1 Gain = 0 */
|
|
status = UpdateReg(state, EB18);
|
|
if (status < 0)
|
|
break;
|
|
state->m_Regs[EB21] = (state->m_Regs[EB21] & ~0x03); /* AGC 2 Gain = 0 (Datasheet = 3) */
|
|
state->m_Regs[EB23] = (state->m_Regs[EB23] | 0x06); /* ForceLP_Fc2_En = 1, LPFc[2] = 1 */
|
|
status = UpdateRegs(state, EB21, EB23);
|
|
if (status < 0)
|
|
break;
|
|
} while (0);
|
|
return status;
|
|
}
|
|
|
|
static int CalcRFFilterCurve(struct tda_state *state)
|
|
{
|
|
int status = 0;
|
|
do {
|
|
msleep(200); /* Temperature stabilisation */
|
|
status = PowerScanInit(state);
|
|
if (status < 0)
|
|
break;
|
|
status = RFTrackingFiltersInit(state, 0);
|
|
if (status < 0)
|
|
break;
|
|
status = RFTrackingFiltersInit(state, 1);
|
|
if (status < 0)
|
|
break;
|
|
status = RFTrackingFiltersInit(state, 2);
|
|
if (status < 0)
|
|
break;
|
|
status = RFTrackingFiltersInit(state, 3);
|
|
if (status < 0)
|
|
break;
|
|
status = RFTrackingFiltersInit(state, 4);
|
|
if (status < 0)
|
|
break;
|
|
status = RFTrackingFiltersInit(state, 5);
|
|
if (status < 0)
|
|
break;
|
|
status = RFTrackingFiltersInit(state, 6);
|
|
if (status < 0)
|
|
break;
|
|
status = ThermometerRead(state, &state->m_TMValue_RFCal); /* also switches off Cal mode !!! */
|
|
if (status < 0)
|
|
break;
|
|
} while (0);
|
|
|
|
return status;
|
|
}
|
|
|
|
static int FixedContentsI2CUpdate(struct tda_state *state)
|
|
{
|
|
static u8 InitRegs[] = {
|
|
0x08, 0x80, 0xC6,
|
|
0xDF, 0x16, 0x60, 0x80,
|
|
0x80, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00,
|
|
0xFC, 0x01, 0x84, 0x41,
|
|
0x01, 0x84, 0x40, 0x07,
|
|
0x00, 0x00, 0x96, 0x3F,
|
|
0xC1, 0x00, 0x8F, 0x00,
|
|
0x00, 0x8C, 0x00, 0x20,
|
|
0xB3, 0x48, 0xB0,
|
|
};
|
|
int status = 0;
|
|
memcpy(&state->m_Regs[TM], InitRegs, EB23 - TM + 1);
|
|
do {
|
|
status = UpdateRegs(state, TM, EB23);
|
|
if (status < 0)
|
|
break;
|
|
|
|
/* AGC1 gain setup */
|
|
state->m_Regs[EB17] = 0x00;
|
|
status = UpdateReg(state, EB17);
|
|
if (status < 0)
|
|
break;
|
|
state->m_Regs[EB17] = 0x03;
|
|
status = UpdateReg(state, EB17);
|
|
if (status < 0)
|
|
break;
|
|
state->m_Regs[EB17] = 0x43;
|
|
status = UpdateReg(state, EB17);
|
|
if (status < 0)
|
|
break;
|
|
state->m_Regs[EB17] = 0x4C;
|
|
status = UpdateReg(state, EB17);
|
|
if (status < 0)
|
|
break;
|
|
|
|
/* IRC Cal Low band */
|
|
state->m_Regs[EP3] = 0x1F;
|
|
state->m_Regs[EP4] = 0x66;
|
|
state->m_Regs[EP5] = 0x81;
|
|
state->m_Regs[CPD] = 0xCC;
|
|
state->m_Regs[CD1] = 0x6C;
|
|
state->m_Regs[CD2] = 0x00;
|
|
state->m_Regs[CD3] = 0x00;
|
|
state->m_Regs[MPD] = 0xC5;
|
|
state->m_Regs[MD1] = 0x77;
|
|
state->m_Regs[MD2] = 0x08;
|
|
state->m_Regs[MD3] = 0x00;
|
|
status = UpdateRegs(state, EP2, MD3); /* diff between sw and datasheet (ep3-md3) */
|
|
if (status < 0)
|
|
break;
|
|
|
|
#if 0
|
|
state->m_Regs[EB4] = 0x61; /* missing in sw */
|
|
status = UpdateReg(state, EB4);
|
|
if (status < 0)
|
|
break;
|
|
msleep(1);
|
|
state->m_Regs[EB4] = 0x41;
|
|
status = UpdateReg(state, EB4);
|
|
if (status < 0)
|
|
break;
|
|
#endif
|
|
|
|
msleep(5);
|
|
status = UpdateReg(state, EP1);
|
|
if (status < 0)
|
|
break;
|
|
msleep(5);
|
|
|
|
state->m_Regs[EP5] = 0x85;
|
|
state->m_Regs[CPD] = 0xCB;
|
|
state->m_Regs[CD1] = 0x66;
|
|
state->m_Regs[CD2] = 0x70;
|
|
status = UpdateRegs(state, EP3, CD3);
|
|
if (status < 0)
|
|
break;
|
|
msleep(5);
|
|
status = UpdateReg(state, EP2);
|
|
if (status < 0)
|
|
break;
|
|
msleep(30);
|
|
|
|
/* IRC Cal mid band */
|
|
state->m_Regs[EP5] = 0x82;
|
|
state->m_Regs[CPD] = 0xA8;
|
|
state->m_Regs[CD2] = 0x00;
|
|
state->m_Regs[MPD] = 0xA1; /* Datasheet = 0xA9 */
|
|
state->m_Regs[MD1] = 0x73;
|
|
state->m_Regs[MD2] = 0x1A;
|
|
status = UpdateRegs(state, EP3, MD3);
|
|
if (status < 0)
|
|
break;
|
|
|
|
msleep(5);
|
|
status = UpdateReg(state, EP1);
|
|
if (status < 0)
|
|
break;
|
|
msleep(5);
|
|
|
|
state->m_Regs[EP5] = 0x86;
|
|
state->m_Regs[CPD] = 0xA8;
|
|
state->m_Regs[CD1] = 0x66;
|
|
state->m_Regs[CD2] = 0xA0;
|
|
status = UpdateRegs(state, EP3, CD3);
|
|
if (status < 0)
|
|
break;
|
|
msleep(5);
|
|
status = UpdateReg(state, EP2);
|
|
if (status < 0)
|
|
break;
|
|
msleep(30);
|
|
|
|
/* IRC Cal high band */
|
|
state->m_Regs[EP5] = 0x83;
|
|
state->m_Regs[CPD] = 0x98;
|
|
state->m_Regs[CD1] = 0x65;
|
|
state->m_Regs[CD2] = 0x00;
|
|
state->m_Regs[MPD] = 0x91; /* Datasheet = 0x91 */
|
|
state->m_Regs[MD1] = 0x71;
|
|
state->m_Regs[MD2] = 0xCD;
|
|
status = UpdateRegs(state, EP3, MD3);
|
|
if (status < 0)
|
|
break;
|
|
msleep(5);
|
|
status = UpdateReg(state, EP1);
|
|
if (status < 0)
|
|
break;
|
|
msleep(5);
|
|
state->m_Regs[EP5] = 0x87;
|
|
state->m_Regs[CD1] = 0x65;
|
|
state->m_Regs[CD2] = 0x50;
|
|
status = UpdateRegs(state, EP3, CD3);
|
|
if (status < 0)
|
|
break;
|
|
msleep(5);
|
|
status = UpdateReg(state, EP2);
|
|
if (status < 0)
|
|
break;
|
|
msleep(30);
|
|
|
|
/* Back to normal */
|
|
state->m_Regs[EP4] = 0x64;
|
|
status = UpdateReg(state, EP4);
|
|
if (status < 0)
|
|
break;
|
|
status = UpdateReg(state, EP1);
|
|
if (status < 0)
|
|
break;
|
|
|
|
} while (0);
|
|
return status;
|
|
}
|
|
|
|
static int InitCal(struct tda_state *state)
|
|
{
|
|
int status = 0;
|
|
|
|
do {
|
|
status = FixedContentsI2CUpdate(state);
|
|
if (status < 0)
|
|
break;
|
|
status = CalcRFFilterCurve(state);
|
|
if (status < 0)
|
|
break;
|
|
status = StandBy(state);
|
|
if (status < 0)
|
|
break;
|
|
/* m_bInitDone = true; */
|
|
} while (0);
|
|
return status;
|
|
};
|
|
|
|
static int RFTrackingFiltersCorrection(struct tda_state *state,
|
|
u32 Frequency)
|
|
{
|
|
int status = 0;
|
|
s32 Cprog_table;
|
|
u8 RFBand;
|
|
u8 dCoverdT;
|
|
|
|
if (!SearchMap2(m_RF_Cal_Map, Frequency, &Cprog_table) ||
|
|
!SearchMap4(m_RF_Band_Map, Frequency, &RFBand) ||
|
|
!SearchMap1(m_RF_Cal_DC_Over_DT_Map, Frequency, &dCoverdT))
|
|
|
|
return -EINVAL;
|
|
|
|
do {
|
|
u8 TMValue_Current;
|
|
u32 RF1 = state->m_RF1[RFBand];
|
|
u32 RF2 = state->m_RF1[RFBand];
|
|
u32 RF3 = state->m_RF1[RFBand];
|
|
s32 RF_A1 = state->m_RF_A1[RFBand];
|
|
s32 RF_B1 = state->m_RF_B1[RFBand];
|
|
s32 RF_A2 = state->m_RF_A2[RFBand];
|
|
s32 RF_B2 = state->m_RF_B2[RFBand];
|
|
s32 Capprox = 0;
|
|
int TComp;
|
|
|
|
state->m_Regs[EP3] &= ~0xE0; /* Power up */
|
|
status = UpdateReg(state, EP3);
|
|
if (status < 0)
|
|
break;
|
|
|
|
status = ThermometerRead(state, &TMValue_Current);
|
|
if (status < 0)
|
|
break;
|
|
|
|
if (RF3 == 0 || Frequency < RF2)
|
|
Capprox = RF_A1 * ((s32)(Frequency) - (s32)(RF1)) + RF_B1 + Cprog_table;
|
|
else
|
|
Capprox = RF_A2 * ((s32)(Frequency) - (s32)(RF2)) + RF_B2 + Cprog_table;
|
|
|
|
TComp = (int)(dCoverdT) * ((int)(TMValue_Current) - (int)(state->m_TMValue_RFCal))/1000;
|
|
|
|
Capprox += TComp;
|
|
|
|
if (Capprox < 0)
|
|
Capprox = 0;
|
|
else if (Capprox > 255)
|
|
Capprox = 255;
|
|
|
|
|
|
/* TODO Temperature compensation. There is defenitely a scale factor */
|
|
/* missing in the datasheet, so leave it out for now. */
|
|
state->m_Regs[EB14] = Capprox;
|
|
|
|
status = UpdateReg(state, EB14);
|
|
if (status < 0)
|
|
break;
|
|
|
|
} while (0);
|
|
return status;
|
|
}
|
|
|
|
static int ChannelConfiguration(struct tda_state *state,
|
|
u32 Frequency, int Standard)
|
|
{
|
|
|
|
s32 IntermediateFrequency = m_StandardTable[Standard].m_IFFrequency;
|
|
int status = 0;
|
|
|
|
u8 BP_Filter = 0;
|
|
u8 RF_Band = 0;
|
|
u8 GainTaper = 0;
|
|
u8 IR_Meas = 0;
|
|
|
|
state->IF = IntermediateFrequency;
|
|
/* printk("tda18271c2dd: %s Freq = %d Standard = %d IF = %d\n", __func__, Frequency, Standard, IntermediateFrequency); */
|
|
/* get values from tables */
|
|
|
|
if (!(SearchMap1(m_BP_Filter_Map, Frequency, &BP_Filter) &&
|
|
SearchMap1(m_GainTaper_Map, Frequency, &GainTaper) &&
|
|
SearchMap1(m_IR_Meas_Map, Frequency, &IR_Meas) &&
|
|
SearchMap4(m_RF_Band_Map, Frequency, &RF_Band))) {
|
|
|
|
printk(KERN_ERR "tda18271c2dd: %s SearchMap failed\n", __func__);
|
|
return -EINVAL;
|
|
}
|
|
|
|
do {
|
|
state->m_Regs[EP3] = (state->m_Regs[EP3] & ~0x1F) | m_StandardTable[Standard].m_EP3_4_0;
|
|
state->m_Regs[EP3] &= ~0x04; /* switch RFAGC to high speed mode */
|
|
|
|
/* m_EP4 default for XToutOn, CAL_Mode (0) */
|
|
state->m_Regs[EP4] = state->m_EP4 | ((Standard > HF_AnalogMax) ? state->m_IFLevelDigital : state->m_IFLevelAnalog);
|
|
/* state->m_Regs[EP4] = state->m_EP4 | state->m_IFLevelDigital; */
|
|
if (Standard <= HF_AnalogMax)
|
|
state->m_Regs[EP4] = state->m_EP4 | state->m_IFLevelAnalog;
|
|
else if (Standard <= HF_ATSC)
|
|
state->m_Regs[EP4] = state->m_EP4 | state->m_IFLevelDVBT;
|
|
else if (Standard <= HF_DVBC)
|
|
state->m_Regs[EP4] = state->m_EP4 | state->m_IFLevelDVBC;
|
|
else
|
|
state->m_Regs[EP4] = state->m_EP4 | state->m_IFLevelDigital;
|
|
|
|
if ((Standard == HF_FM_Radio) && state->m_bFMInput)
|
|
state->m_Regs[EP4] |= 0x80;
|
|
|
|
state->m_Regs[MPD] &= ~0x80;
|
|
if (Standard > HF_AnalogMax)
|
|
state->m_Regs[MPD] |= 0x80; /* Add IF_notch for digital */
|
|
|
|
state->m_Regs[EB22] = m_StandardTable[Standard].m_EB22;
|
|
|
|
/* Note: This is missing from flowchart in TDA18271 specification ( 1.5 MHz cutoff for FM ) */
|
|
if (Standard == HF_FM_Radio)
|
|
state->m_Regs[EB23] |= 0x06; /* ForceLP_Fc2_En = 1, LPFc[2] = 1 */
|
|
else
|
|
state->m_Regs[EB23] &= ~0x06; /* ForceLP_Fc2_En = 0, LPFc[2] = 0 */
|
|
|
|
status = UpdateRegs(state, EB22, EB23);
|
|
if (status < 0)
|
|
break;
|
|
|
|
state->m_Regs[EP1] = (state->m_Regs[EP1] & ~0x07) | 0x40 | BP_Filter; /* Dis_Power_level = 1, Filter */
|
|
state->m_Regs[EP5] = (state->m_Regs[EP5] & ~0x07) | IR_Meas;
|
|
state->m_Regs[EP2] = (RF_Band << 5) | GainTaper;
|
|
|
|
state->m_Regs[EB1] = (state->m_Regs[EB1] & ~0x07) |
|
|
(state->m_bMaster ? 0x04 : 0x00); /* CALVCO_FortLOn = MS */
|
|
/* AGC1_always_master = 0 */
|
|
/* AGC_firstn = 0 */
|
|
status = UpdateReg(state, EB1);
|
|
if (status < 0)
|
|
break;
|
|
|
|
if (state->m_bMaster) {
|
|
status = CalcMainPLL(state, Frequency + IntermediateFrequency);
|
|
if (status < 0)
|
|
break;
|
|
status = UpdateRegs(state, TM, EP5);
|
|
if (status < 0)
|
|
break;
|
|
state->m_Regs[EB4] |= 0x20; /* LO_forceSrce = 1 */
|
|
status = UpdateReg(state, EB4);
|
|
if (status < 0)
|
|
break;
|
|
msleep(1);
|
|
state->m_Regs[EB4] &= ~0x20; /* LO_forceSrce = 0 */
|
|
status = UpdateReg(state, EB4);
|
|
if (status < 0)
|
|
break;
|
|
} else {
|
|
u8 PostDiv = 0;
|
|
u8 Div;
|
|
status = CalcCalPLL(state, Frequency + IntermediateFrequency);
|
|
if (status < 0)
|
|
break;
|
|
|
|
SearchMap3(m_Cal_PLL_Map, Frequency + IntermediateFrequency, &PostDiv, &Div);
|
|
state->m_Regs[MPD] = (state->m_Regs[MPD] & ~0x7F) | (PostDiv & 0x77);
|
|
status = UpdateReg(state, MPD);
|
|
if (status < 0)
|
|
break;
|
|
status = UpdateRegs(state, TM, EP5);
|
|
if (status < 0)
|
|
break;
|
|
|
|
state->m_Regs[EB7] |= 0x20; /* CAL_forceSrce = 1 */
|
|
status = UpdateReg(state, EB7);
|
|
if (status < 0)
|
|
break;
|
|
msleep(1);
|
|
state->m_Regs[EB7] &= ~0x20; /* CAL_forceSrce = 0 */
|
|
status = UpdateReg(state, EB7);
|
|
if (status < 0)
|
|
break;
|
|
}
|
|
msleep(20);
|
|
if (Standard != HF_FM_Radio)
|
|
state->m_Regs[EP3] |= 0x04; /* RFAGC to normal mode */
|
|
status = UpdateReg(state, EP3);
|
|
if (status < 0)
|
|
break;
|
|
|
|
} while (0);
|
|
return status;
|
|
}
|
|
|
|
static int sleep(struct dvb_frontend *fe)
|
|
{
|
|
struct tda_state *state = fe->tuner_priv;
|
|
|
|
StandBy(state);
|
|
return 0;
|
|
}
|
|
|
|
static int init(struct dvb_frontend *fe)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static void release(struct dvb_frontend *fe)
|
|
{
|
|
kfree(fe->tuner_priv);
|
|
fe->tuner_priv = NULL;
|
|
}
|
|
|
|
|
|
static int set_params(struct dvb_frontend *fe)
|
|
{
|
|
struct tda_state *state = fe->tuner_priv;
|
|
int status = 0;
|
|
int Standard;
|
|
u32 bw = fe->dtv_property_cache.bandwidth_hz;
|
|
u32 delsys = fe->dtv_property_cache.delivery_system;
|
|
|
|
state->m_Frequency = fe->dtv_property_cache.frequency;
|
|
|
|
switch (delsys) {
|
|
case SYS_DVBT:
|
|
case SYS_DVBT2:
|
|
switch (bw) {
|
|
case 6000000:
|
|
Standard = HF_DVBT_6MHZ;
|
|
break;
|
|
case 7000000:
|
|
Standard = HF_DVBT_7MHZ;
|
|
break;
|
|
case 8000000:
|
|
Standard = HF_DVBT_8MHZ;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
case SYS_DVBC_ANNEX_A:
|
|
case SYS_DVBC_ANNEX_C:
|
|
if (bw <= 6000000)
|
|
Standard = HF_DVBC_6MHZ;
|
|
else if (bw <= 7000000)
|
|
Standard = HF_DVBC_7MHZ;
|
|
else
|
|
Standard = HF_DVBC_8MHZ;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
do {
|
|
status = RFTrackingFiltersCorrection(state, state->m_Frequency);
|
|
if (status < 0)
|
|
break;
|
|
status = ChannelConfiguration(state, state->m_Frequency,
|
|
Standard);
|
|
if (status < 0)
|
|
break;
|
|
|
|
msleep(state->m_SettlingTime); /* Allow AGC's to settle down */
|
|
} while (0);
|
|
return status;
|
|
}
|
|
|
|
#if 0
|
|
static int GetSignalStrength(s32 *pSignalStrength, u32 RFAgc, u32 IFAgc)
|
|
{
|
|
if (IFAgc < 500) {
|
|
/* Scale this from 0 to 50000 */
|
|
*pSignalStrength = IFAgc * 100;
|
|
} else {
|
|
/* Scale range 500-1500 to 50000-80000 */
|
|
*pSignalStrength = 50000 + (IFAgc - 500) * 30;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static int get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
|
|
{
|
|
struct tda_state *state = fe->tuner_priv;
|
|
|
|
*frequency = state->IF;
|
|
return 0;
|
|
}
|
|
|
|
static int get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
|
|
{
|
|
/* struct tda_state *state = fe->tuner_priv; */
|
|
/* *bandwidth = priv->bandwidth; */
|
|
return 0;
|
|
}
|
|
|
|
|
|
static const struct dvb_tuner_ops tuner_ops = {
|
|
.info = {
|
|
.name = "NXP TDA18271C2D",
|
|
.frequency_min = 47125000,
|
|
.frequency_max = 865000000,
|
|
.frequency_step = 62500
|
|
},
|
|
.init = init,
|
|
.sleep = sleep,
|
|
.set_params = set_params,
|
|
.release = release,
|
|
.get_if_frequency = get_if_frequency,
|
|
.get_bandwidth = get_bandwidth,
|
|
};
|
|
|
|
struct dvb_frontend *tda18271c2dd_attach(struct dvb_frontend *fe,
|
|
struct i2c_adapter *i2c, u8 adr)
|
|
{
|
|
struct tda_state *state;
|
|
|
|
state = kzalloc(sizeof(struct tda_state), GFP_KERNEL);
|
|
if (!state)
|
|
return NULL;
|
|
|
|
fe->tuner_priv = state;
|
|
state->adr = adr;
|
|
state->i2c = i2c;
|
|
memcpy(&fe->ops.tuner_ops, &tuner_ops, sizeof(struct dvb_tuner_ops));
|
|
reset(state);
|
|
InitCal(state);
|
|
|
|
return fe;
|
|
}
|
|
EXPORT_SYMBOL_GPL(tda18271c2dd_attach);
|
|
|
|
MODULE_DESCRIPTION("TDA18271C2 driver");
|
|
MODULE_AUTHOR("DD");
|
|
MODULE_LICENSE("GPL");
|