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-rw-r--r--drivers/media/dvb-frontends/tda18271c2dd.c1235
1 files changed, 1235 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/tda18271c2dd.c b/drivers/media/dvb-frontends/tda18271c2dd.c
new file mode 100644
index 000000000..a34834487
--- /dev/null
+++ b/drivers/media/dvb-frontends/tda18271c2dd.c
@@ -0,0 +1,1235 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * tda18271c2dd: Driver for the TDA18271C2 tuner
+ *
+ * Copyright (C) 2010 Digital Devices GmbH
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/firmware.h>
+#include <linux/i2c.h>
+#include <asm/div64.h>
+
+#include <media/dvb_frontend.h>
+#include "tda18271c2dd.h"
+
+/* Max transfer size done by I2C transfer functions */
+#define MAX_XFER_SIZE 64
+
+struct SStandardParam {
+ s32 m_IFFrequency;
+ u32 m_BandWidth;
+ u8 m_EP3_4_0;
+ u8 m_EB22;
+};
+
+struct SMap {
+ u32 m_Frequency;
+ u8 m_Param;
+};
+
+struct SMapI {
+ u32 m_Frequency;
+ s32 m_Param;
+};
+
+struct SMap2 {
+ u32 m_Frequency;
+ u8 m_Param1;
+ u8 m_Param2;
+};
+
+struct SRFBandMap {
+ u32 m_RF_max;
+ u32 m_RF1_Default;
+ u32 m_RF2_Default;
+ u32 m_RF3_Default;
+};
+
+enum ERegister {
+ ID = 0,
+ TM,
+ PL,
+ EP1, EP2, EP3, EP4, EP5,
+ CPD, CD1, CD2, CD3,
+ MPD, MD1, MD2, MD3,
+ EB1, EB2, EB3, EB4, EB5, EB6, EB7, EB8, EB9, EB10,
+ EB11, EB12, EB13, EB14, EB15, EB16, EB17, EB18, EB19, EB20,
+ EB21, EB22, EB23,
+ NUM_REGS
+};
+
+struct tda_state {
+ struct i2c_adapter *i2c;
+ u8 adr;
+
+ u32 m_Frequency;
+ u32 IF;
+
+ u8 m_IFLevelAnalog;
+ u8 m_IFLevelDigital;
+ u8 m_IFLevelDVBC;
+ u8 m_IFLevelDVBT;
+
+ u8 m_EP4;
+ u8 m_EP3_Standby;
+
+ bool m_bMaster;
+
+ s32 m_SettlingTime;
+
+ u8 m_Regs[NUM_REGS];
+
+ /* Tracking filter settings for band 0..6 */
+ u32 m_RF1[7];
+ s32 m_RF_A1[7];
+ s32 m_RF_B1[7];
+ u32 m_RF2[7];
+ s32 m_RF_A2[7];
+ s32 m_RF_B2[7];
+ u32 m_RF3[7];
+
+ u8 m_TMValue_RFCal; /* Calibration temperature */
+
+ bool m_bFMInput; /* true to use Pin 8 for FM Radio */
+
+};
+
+static int PowerScan(struct tda_state *state,
+ u8 RFBand, u32 RF_in,
+ u32 *pRF_Out, bool *pbcal);
+
+static int i2c_readn(struct i2c_adapter *adapter, u8 adr, u8 *data, int len)
+{
+ struct i2c_msg msgs[1] = {{.addr = adr, .flags = I2C_M_RD,
+ .buf = data, .len = len} };
+ return (i2c_transfer(adapter, msgs, 1) == 1) ? 0 : -1;
+}
+
+static int i2c_write(struct i2c_adapter *adap, u8 adr, u8 *data, int len)
+{
+ struct i2c_msg msg = {.addr = adr, .flags = 0,
+ .buf = data, .len = len};
+
+ if (i2c_transfer(adap, &msg, 1) != 1) {
+ printk(KERN_ERR "tda18271c2dd: i2c write error at addr %i\n", adr);
+ return -1;
+ }
+ return 0;
+}
+
+static int WriteRegs(struct tda_state *state,
+ u8 SubAddr, u8 *Regs, u16 nRegs)
+{
+ u8 data[MAX_XFER_SIZE];
+
+ if (1 + nRegs > sizeof(data)) {
+ printk(KERN_WARNING
+ "%s: i2c wr: len=%d is too big!\n",
+ KBUILD_MODNAME, nRegs);
+ return -EINVAL;
+ }
+
+ data[0] = SubAddr;
+ memcpy(data + 1, Regs, nRegs);
+ return i2c_write(state->i2c, state->adr, data, nRegs + 1);
+}
+
+static int WriteReg(struct tda_state *state, u8 SubAddr, u8 Reg)
+{
+ u8 msg[2] = {SubAddr, Reg};
+
+ return i2c_write(state->i2c, state->adr, msg, 2);
+}
+
+static int Read(struct tda_state *state, u8 * Regs)
+{
+ return i2c_readn(state->i2c, state->adr, Regs, 16);
+}
+
+static int ReadExtented(struct tda_state *state, u8 * Regs)
+{
+ return i2c_readn(state->i2c, state->adr, Regs, NUM_REGS);
+}
+
+static int UpdateRegs(struct tda_state *state, u8 RegFrom, u8 RegTo)
+{
+ return WriteRegs(state, RegFrom,
+ &state->m_Regs[RegFrom], RegTo-RegFrom+1);
+}
+static int UpdateReg(struct tda_state *state, u8 Reg)
+{
+ return WriteReg(state, Reg, state->m_Regs[Reg]);
+}
+
+#include "tda18271c2dd_maps.h"
+
+static void reset(struct tda_state *state)
+{
+ u32 ulIFLevelAnalog = 0;
+ u32 ulIFLevelDigital = 2;
+ u32 ulIFLevelDVBC = 7;
+ u32 ulIFLevelDVBT = 6;
+ u32 ulXTOut = 0;
+ u32 ulStandbyMode = 0x06; /* Send in stdb, but leave osc on */
+ u32 ulSlave = 0;
+ u32 ulFMInput = 0;
+ u32 ulSettlingTime = 100;
+
+ state->m_Frequency = 0;
+ state->m_SettlingTime = 100;
+ state->m_IFLevelAnalog = (ulIFLevelAnalog & 0x07) << 2;
+ state->m_IFLevelDigital = (ulIFLevelDigital & 0x07) << 2;
+ state->m_IFLevelDVBC = (ulIFLevelDVBC & 0x07) << 2;
+ state->m_IFLevelDVBT = (ulIFLevelDVBT & 0x07) << 2;
+
+ state->m_EP4 = 0x20;
+ if (ulXTOut != 0)
+ state->m_EP4 |= 0x40;
+
+ state->m_EP3_Standby = ((ulStandbyMode & 0x07) << 5) | 0x0F;
+ state->m_bMaster = (ulSlave == 0);
+
+ state->m_SettlingTime = ulSettlingTime;
+
+ state->m_bFMInput = (ulFMInput == 2);
+}
+
+static bool SearchMap1(const struct SMap map[], u32 frequency, u8 *param)
+{
+ int i = 0;
+
+ while ((map[i].m_Frequency != 0) && (frequency > map[i].m_Frequency))
+ i += 1;
+ if (map[i].m_Frequency == 0)
+ return false;
+ *param = map[i].m_Param;
+ return true;
+}
+
+static bool SearchMap2(const struct SMapI map[], u32 frequency, s32 *param)
+{
+ int i = 0;
+
+ while ((map[i].m_Frequency != 0) &&
+ (frequency > map[i].m_Frequency))
+ i += 1;
+ if (map[i].m_Frequency == 0)
+ return false;
+ *param = map[i].m_Param;
+ return true;
+}
+
+static bool SearchMap3(const struct SMap2 map[], u32 frequency, u8 *param1,
+ u8 *param2)
+{
+ int i = 0;
+
+ while ((map[i].m_Frequency != 0) &&
+ (frequency > map[i].m_Frequency))
+ i += 1;
+ if (map[i].m_Frequency == 0)
+ return false;
+ *param1 = map[i].m_Param1;
+ *param2 = map[i].m_Param2;
+ return true;
+}
+
+static bool SearchMap4(const struct SRFBandMap map[], u32 frequency, u8 *rfband)
+{
+ int i = 0;
+
+ while (i < 7 && (frequency > map[i].m_RF_max))
+ i += 1;
+ if (i == 7)
+ return false;
+ *rfband = i;
+ return true;
+}
+
+static int ThermometerRead(struct tda_state *state, u8 *pTM_Value)
+{
+ int status = 0;
+
+ do {
+ u8 Regs[16];
+ state->m_Regs[TM] |= 0x10;
+ status = UpdateReg(state, TM);
+ if (status < 0)
+ break;
+ status = Read(state, Regs);
+ if (status < 0)
+ break;
+ if (((Regs[TM] & 0x0F) == 0 && (Regs[TM] & 0x20) == 0x20) ||
+ ((Regs[TM] & 0x0F) == 8 && (Regs[TM] & 0x20) == 0x00)) {
+ state->m_Regs[TM] ^= 0x20;
+ status = UpdateReg(state, TM);
+ if (status < 0)
+ break;
+ msleep(10);
+ status = Read(state, Regs);
+ if (status < 0)
+ break;
+ }
+ *pTM_Value = (Regs[TM] & 0x20)
+ ? m_Thermometer_Map_2[Regs[TM] & 0x0F]
+ : m_Thermometer_Map_1[Regs[TM] & 0x0F] ;
+ state->m_Regs[TM] &= ~0x10; /* Thermometer off */
+ status = UpdateReg(state, TM);
+ if (status < 0)
+ break;
+ state->m_Regs[EP4] &= ~0x03; /* CAL_mode = 0 ????????? */
+ status = UpdateReg(state, EP4);
+ if (status < 0)
+ break;
+ } while (0);
+
+ return status;
+}
+
+static int StandBy(struct tda_state *state)
+{
+ int status = 0;
+ do {
+ state->m_Regs[EB12] &= ~0x20; /* PD_AGC1_Det = 0 */
+ status = UpdateReg(state, EB12);
+ if (status < 0)
+ break;
+ state->m_Regs[EB18] &= ~0x83; /* AGC1_loop_off = 0, AGC1_Gain = 6 dB */
+ status = UpdateReg(state, EB18);
+ if (status < 0)
+ break;
+ state->m_Regs[EB21] |= 0x03; /* AGC2_Gain = -6 dB */
+ state->m_Regs[EP3] = state->m_EP3_Standby;
+ status = UpdateReg(state, EP3);
+ if (status < 0)
+ break;
+ state->m_Regs[EB23] &= ~0x06; /* ForceLP_Fc2_En = 0, LP_Fc[2] = 0 */
+ status = UpdateRegs(state, EB21, EB23);
+ if (status < 0)
+ break;
+ } while (0);
+ return status;
+}
+
+static int CalcMainPLL(struct tda_state *state, u32 freq)
+{
+
+ u8 PostDiv;
+ u8 Div;
+ u64 OscFreq;
+ u32 MainDiv;
+
+ if (!SearchMap3(m_Main_PLL_Map, freq, &PostDiv, &Div))
+ return -EINVAL;
+
+ OscFreq = (u64) freq * (u64) Div;
+ OscFreq *= (u64) 16384;
+ do_div(OscFreq, (u64)16000000);
+ MainDiv = OscFreq;
+
+ state->m_Regs[MPD] = PostDiv & 0x77;
+ state->m_Regs[MD1] = ((MainDiv >> 16) & 0x7F);
+ state->m_Regs[MD2] = ((MainDiv >> 8) & 0xFF);
+ state->m_Regs[MD3] = (MainDiv & 0xFF);
+
+ return UpdateRegs(state, MPD, MD3);
+}
+
+static int CalcCalPLL(struct tda_state *state, u32 freq)
+{
+ u8 PostDiv;
+ u8 Div;
+ u64 OscFreq;
+ u32 CalDiv;
+
+ if (!SearchMap3(m_Cal_PLL_Map, freq, &PostDiv, &Div))
+ return -EINVAL;
+
+ OscFreq = (u64)freq * (u64)Div;
+ /* CalDiv = u32( OscFreq * 16384 / 16000000 ); */
+ OscFreq *= (u64)16384;
+ do_div(OscFreq, (u64)16000000);
+ CalDiv = OscFreq;
+
+ state->m_Regs[CPD] = PostDiv;
+ state->m_Regs[CD1] = ((CalDiv >> 16) & 0xFF);
+ state->m_Regs[CD2] = ((CalDiv >> 8) & 0xFF);
+ state->m_Regs[CD3] = (CalDiv & 0xFF);
+
+ return UpdateRegs(state, CPD, CD3);
+}
+
+static int CalibrateRF(struct tda_state *state,
+ u8 RFBand, u32 freq, s32 *pCprog)
+{
+ int status = 0;
+ u8 Regs[NUM_REGS];
+ do {
+ u8 BP_Filter = 0;
+ u8 GainTaper = 0;
+ u8 RFC_K = 0;
+ u8 RFC_M = 0;
+
+ state->m_Regs[EP4] &= ~0x03; /* CAL_mode = 0 */
+ status = UpdateReg(state, EP4);
+ if (status < 0)
+ break;
+ state->m_Regs[EB18] |= 0x03; /* AGC1_Gain = 3 */
+ status = UpdateReg(state, EB18);
+ if (status < 0)
+ break;
+
+ /* Switching off LT (as datasheet says) causes calibration on C1 to fail */
+ /* (Readout of Cprog is always 255) */
+ if (state->m_Regs[ID] != 0x83) /* C1: ID == 83, C2: ID == 84 */
+ state->m_Regs[EP3] |= 0x40; /* SM_LT = 1 */
+
+ if (!(SearchMap1(m_BP_Filter_Map, freq, &BP_Filter) &&
+ SearchMap1(m_GainTaper_Map, freq, &GainTaper) &&
+ SearchMap3(m_KM_Map, freq, &RFC_K, &RFC_M)))
+ return -EINVAL;
+
+ state->m_Regs[EP1] = (state->m_Regs[EP1] & ~0x07) | BP_Filter;
+ state->m_Regs[EP2] = (RFBand << 5) | GainTaper;
+
+ state->m_Regs[EB13] = (state->m_Regs[EB13] & ~0x7C) | (RFC_K << 4) | (RFC_M << 2);
+
+ status = UpdateRegs(state, EP1, EP3);
+ if (status < 0)
+ break;
+ status = UpdateReg(state, EB13);
+ if (status < 0)
+ break;
+
+ state->m_Regs[EB4] |= 0x20; /* LO_ForceSrce = 1 */
+ status = UpdateReg(state, EB4);
+ if (status < 0)
+ break;
+
+ state->m_Regs[EB7] |= 0x20; /* CAL_ForceSrce = 1 */
+ status = UpdateReg(state, EB7);
+ if (status < 0)
+ break;
+
+ state->m_Regs[EB14] = 0; /* RFC_Cprog = 0 */
+ status = UpdateReg(state, EB14);
+ if (status < 0)
+ break;
+
+ state->m_Regs[EB20] &= ~0x20; /* ForceLock = 0; */
+ status = UpdateReg(state, EB20);
+ if (status < 0)
+ break;
+
+ state->m_Regs[EP4] |= 0x03; /* CAL_Mode = 3 */
+ status = UpdateRegs(state, EP4, EP5);
+ if (status < 0)
+ break;
+
+ status = CalcCalPLL(state, freq);
+ if (status < 0)
+ break;
+ status = CalcMainPLL(state, freq + 1000000);
+ if (status < 0)
+ break;
+
+ msleep(5);
+ status = UpdateReg(state, EP2);
+ if (status < 0)
+ break;
+ status = UpdateReg(state, EP1);
+ if (status < 0)
+ break;
+ status = UpdateReg(state, EP2);
+ if (status < 0)
+ break;
+ status = UpdateReg(state, EP1);
+ if (status < 0)
+ break;
+
+ state->m_Regs[EB4] &= ~0x20; /* LO_ForceSrce = 0 */
+ status = UpdateReg(state, EB4);
+ if (status < 0)
+ break;
+
+ state->m_Regs[EB7] &= ~0x20; /* CAL_ForceSrce = 0 */
+ status = UpdateReg(state, EB7);
+ if (status < 0)
+ break;
+ msleep(10);
+
+ state->m_Regs[EB20] |= 0x20; /* ForceLock = 1; */
+ status = UpdateReg(state, EB20);
+ if (status < 0)
+ break;
+ msleep(60);
+
+ state->m_Regs[EP4] &= ~0x03; /* CAL_Mode = 0 */
+ state->m_Regs[EP3] &= ~0x40; /* SM_LT = 0 */
+ state->m_Regs[EB18] &= ~0x03; /* AGC1_Gain = 0 */
+ status = UpdateReg(state, EB18);
+ if (status < 0)
+ break;
+ status = UpdateRegs(state, EP3, EP4);
+ if (status < 0)
+ break;
+ status = UpdateReg(state, EP1);
+ if (status < 0)
+ break;
+
+ status = ReadExtented(state, Regs);
+ if (status < 0)
+ break;
+
+ *pCprog = Regs[EB14];
+
+ } while (0);
+ return status;
+}
+
+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 workaround 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;
+ }
+ 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;
+ }
+ break;
+ 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_hz = 47125 * kHz,
+ .frequency_max_hz = 865 * MHz,
+ .frequency_step_hz = 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");
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-13 17:00:38 +0000