| /* |
| TDA10023 - DVB-C decoder |
| (as used in Philips CU1216-3 NIM and the Reelbox DVB-C tuner card) |
| |
| Copyright (C) 2005 Georg Acher, BayCom GmbH (acher at baycom dot de) |
| Copyright (c) 2006 Hartmut Birr (e9hack at gmail dot com) |
| |
| Remotely based on tda10021.c |
| Copyright (C) 1999 Convergence Integrated Media GmbH <ralph@convergence.de> |
| Copyright (C) 2004 Markus Schulz <msc@antzsystem.de> |
| Support for TDA10021 |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| */ |
| |
| #include <linux/delay.h> |
| #include <linux/errno.h> |
| #include <linux/init.h> |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/string.h> |
| #include <linux/slab.h> |
| |
| #include <asm/div64.h> |
| |
| #include "dvb_frontend.h" |
| #include "tda1002x.h" |
| |
| |
| struct tda10023_state { |
| struct i2c_adapter* i2c; |
| /* configuration settings */ |
| const struct tda1002x_config* config; |
| struct dvb_frontend frontend; |
| |
| u8 pwm; |
| u8 reg0; |
| }; |
| |
| |
| #define dprintk(x...) |
| |
| static int verbose; |
| |
| #define XTAL 28920000UL |
| #define PLL_M 8UL |
| #define PLL_P 4UL |
| #define PLL_N 1UL |
| #define SYSCLK (XTAL*PLL_M/(PLL_N*PLL_P)) // -> 57840000 |
| |
| static u8 tda10023_inittab[]={ |
| // reg mask val |
| 0x2a,0xff,0x02, // PLL3, Bypass, Power Down |
| 0xff,0x64,0x00, // Sleep 100ms |
| 0x2a,0xff,0x03, // PLL3, Bypass, Power Down |
| 0xff,0x64,0x00, // Sleep 100ms |
| 0x28,0xff,PLL_M-1, // PLL1 M=8 |
| 0x29,0xff,((PLL_P-1)<<6)|(PLL_N-1), // PLL2 |
| 0x00,0xff,0x23, // GPR FSAMPLING=1 |
| 0x2a,0xff,0x08, // PLL3 PSACLK=1 |
| 0xff,0x64,0x00, // Sleep 100ms |
| 0x1f,0xff,0x00, // RESET |
| 0xff,0x64,0x00, // Sleep 100ms |
| 0xe6,0x0c,0x04, // RSCFG_IND |
| 0x10,0xc0,0x80, // DECDVBCFG1 PBER=1 |
| |
| 0x0e,0xff,0x82, // GAIN1 |
| 0x03,0x08,0x08, // CLKCONF DYN=1 |
| 0x2e,0xbf,0x30, // AGCCONF2 TRIAGC=0,POSAGC=ENAGCIF=1 PPWMTUN=0 PPWMIF=0 |
| 0x01,0xff,0x30, // AGCREF |
| 0x1e,0x84,0x84, // CONTROL SACLK_ON=1 |
| 0x1b,0xff,0xc8, // ADC TWOS=1 |
| 0x3b,0xff,0xff, // IFMAX |
| 0x3c,0xff,0x00, // IFMIN |
| 0x34,0xff,0x00, // PWMREF |
| 0x35,0xff,0xff, // TUNMAX |
| 0x36,0xff,0x00, // TUNMIN |
| 0x06,0xff,0x7f, // EQCONF1 POSI=7 ENADAPT=ENEQUAL=DFE=1 // 0x77 |
| 0x1c,0x30,0x30, // EQCONF2 STEPALGO=SGNALGO=1 |
| 0x37,0xff,0xf6, // DELTAF_LSB |
| 0x38,0xff,0xff, // DELTAF_MSB |
| 0x02,0xff,0x93, // AGCCONF1 IFS=1 KAGCIF=2 KAGCTUN=3 |
| 0x2d,0xff,0xf6, // SWEEP SWPOS=1 SWDYN=7 SWSTEP=1 SWLEN=2 |
| 0x04,0x10,0x00, // SWRAMP=1 |
| 0x12,0xff,0xa1, // INTP1 POCLKP=1 FEL=1 MFS=0 |
| 0x2b,0x01,0xa1, // INTS1 |
| 0x20,0xff,0x04, // INTP2 SWAPP=? MSBFIRSTP=? INTPSEL=? |
| 0x2c,0xff,0x0d, // INTP/S TRIP=0 TRIS=0 |
| 0xc4,0xff,0x00, |
| 0xc3,0x30,0x00, |
| 0xb5,0xff,0x19, // ERAGC_THD |
| 0x00,0x03,0x01, // GPR, CLBS soft reset |
| 0x00,0x03,0x03, // GPR, CLBS soft reset |
| 0xff,0x64,0x00, // Sleep 100ms |
| 0xff,0xff,0xff |
| }; |
| |
| static u8 tda10023_readreg (struct tda10023_state* state, u8 reg) |
| { |
| u8 b0 [] = { reg }; |
| u8 b1 [] = { 0 }; |
| struct i2c_msg msg [] = { { .addr = state->config->demod_address, .flags = 0, .buf = b0, .len = 1 }, |
| { .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = b1, .len = 1 } }; |
| int ret; |
| |
| ret = i2c_transfer (state->i2c, msg, 2); |
| if (ret != 2) |
| printk("DVB: TDA10023: %s: readreg error (ret == %i)\n", |
| __FUNCTION__, ret); |
| return b1[0]; |
| } |
| |
| static int tda10023_writereg (struct tda10023_state* state, u8 reg, u8 data) |
| { |
| u8 buf[] = { reg, data }; |
| struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = buf, .len = 2 }; |
| int ret; |
| |
| ret = i2c_transfer (state->i2c, &msg, 1); |
| if (ret != 1) |
| printk("DVB: TDA10023(%d): %s, writereg error " |
| "(reg == 0x%02x, val == 0x%02x, ret == %i)\n", |
| state->frontend.dvb->num, __FUNCTION__, reg, data, ret); |
| |
| return (ret != 1) ? -EREMOTEIO : 0; |
| } |
| |
| |
| static int tda10023_writebit (struct tda10023_state* state, u8 reg, u8 mask,u8 data) |
| { |
| if (mask==0xff) |
| return tda10023_writereg(state, reg, data); |
| else { |
| u8 val; |
| val=tda10023_readreg(state,reg); |
| val&=~mask; |
| val|=(data&mask); |
| return tda10023_writereg(state, reg, val); |
| } |
| } |
| |
| static void tda10023_writetab(struct tda10023_state* state, u8* tab) |
| { |
| u8 r,m,v; |
| while (1) { |
| r=*tab++; |
| m=*tab++; |
| v=*tab++; |
| if (r==0xff) { |
| if (m==0xff) |
| break; |
| else |
| msleep(m); |
| } |
| else |
| tda10023_writebit(state,r,m,v); |
| } |
| } |
| |
| //get access to tuner |
| static int lock_tuner(struct tda10023_state* state) |
| { |
| u8 buf[2] = { 0x0f, 0xc0 }; |
| struct i2c_msg msg = {.addr=state->config->demod_address, .flags=0, .buf=buf, .len=2}; |
| |
| if(i2c_transfer(state->i2c, &msg, 1) != 1) |
| { |
| printk("tda10023: lock tuner fails\n"); |
| return -EREMOTEIO; |
| } |
| return 0; |
| } |
| |
| //release access from tuner |
| static int unlock_tuner(struct tda10023_state* state) |
| { |
| u8 buf[2] = { 0x0f, 0x40 }; |
| struct i2c_msg msg_post={.addr=state->config->demod_address, .flags=0, .buf=buf, .len=2}; |
| |
| if(i2c_transfer(state->i2c, &msg_post, 1) != 1) |
| { |
| printk("tda10023: unlock tuner fails\n"); |
| return -EREMOTEIO; |
| } |
| return 0; |
| } |
| |
| static int tda10023_setup_reg0 (struct tda10023_state* state, u8 reg0) |
| { |
| reg0 |= state->reg0 & 0x63; |
| |
| tda10023_writereg (state, 0x00, reg0 & 0xfe); |
| tda10023_writereg (state, 0x00, reg0 | 0x01); |
| |
| state->reg0 = reg0; |
| return 0; |
| } |
| |
| static int tda10023_set_symbolrate (struct tda10023_state* state, u32 sr) |
| { |
| s32 BDR; |
| s32 BDRI; |
| s16 SFIL=0; |
| u16 NDEC = 0; |
| |
| if (sr > (SYSCLK/(2*4))) |
| sr=SYSCLK/(2*4); |
| |
| if (sr<870000) |
| sr=870000; |
| |
| if (sr < (u32)(SYSCLK/98.40)) { |
| NDEC=3; |
| SFIL=1; |
| } else if (sr<(u32)(SYSCLK/64.0)) { |
| NDEC=3; |
| SFIL=0; |
| } else if (sr<(u32)(SYSCLK/49.2)) { |
| NDEC=2; |
| SFIL=1; |
| } else if (sr<(u32)(SYSCLK/32.0)) { |
| NDEC=2; |
| SFIL=0; |
| } else if (sr<(u32)(SYSCLK/24.6)) { |
| NDEC=1; |
| SFIL=1; |
| } else if (sr<(u32)(SYSCLK/16.0)) { |
| NDEC=1; |
| SFIL=0; |
| } else if (sr<(u32)(SYSCLK/12.3)) { |
| NDEC=0; |
| SFIL=1; |
| } |
| |
| BDRI=SYSCLK*16; |
| BDRI>>=NDEC; |
| BDRI +=sr/2; |
| BDRI /=sr; |
| |
| if (BDRI>255) |
| BDRI=255; |
| |
| { |
| u64 BDRX; |
| |
| BDRX=1<<(24+NDEC); |
| BDRX*=sr; |
| do_div(BDRX,SYSCLK); // BDRX/=SYSCLK; |
| |
| BDR=(s32)BDRX; |
| } |
| // printk("Symbolrate %i, BDR %i BDRI %i, NDEC %i\n",sr,BDR,BDRI,NDEC); |
| tda10023_writebit (state, 0x03, 0xc0, NDEC<<6); |
| tda10023_writereg (state, 0x0a, BDR&255); |
| tda10023_writereg (state, 0x0b, (BDR>>8)&255); |
| tda10023_writereg (state, 0x0c, (BDR>>16)&31); |
| tda10023_writereg (state, 0x0d, BDRI); |
| tda10023_writereg (state, 0x3d, (SFIL<<7)); |
| return 0; |
| } |
| |
| static int tda10023_init (struct dvb_frontend *fe) |
| { |
| struct tda10023_state* state = fe->demodulator_priv; |
| |
| dprintk("DVB: TDA10023(%d): init chip\n", fe->adapter->num); |
| |
| tda10023_writetab(state, tda10023_inittab); |
| |
| return 0; |
| } |
| |
| static int tda10023_set_parameters (struct dvb_frontend *fe, |
| struct dvb_frontend_parameters *p) |
| { |
| struct tda10023_state* state = fe->demodulator_priv; |
| |
| static int qamvals[6][6] = { |
| // QAM LOCKTHR MSETH AREF AGCREFNYQ ERAGCNYQ_THD |
| { (5<<2), 0x78, 0x8c, 0x96, 0x78, 0x4c }, // 4 QAM |
| { (0<<2), 0x87, 0xa2, 0x91, 0x8c, 0x57 }, // 16 QAM |
| { (1<<2), 0x64, 0x74, 0x96, 0x8c, 0x57 }, // 32 QAM |
| { (2<<2), 0x46, 0x43, 0x6a, 0x6a, 0x44 }, // 64 QAM |
| { (3<<2), 0x36, 0x34, 0x7e, 0x78, 0x4c }, // 128 QAM |
| { (4<<2), 0x26, 0x23, 0x6c, 0x5c, 0x3c }, // 256 QAM |
| }; |
| |
| int qam = p->u.qam.modulation; |
| |
| if (qam < 0 || qam > 5) |
| return -EINVAL; |
| |
| if (fe->ops.tuner_ops.set_params) { |
| fe->ops.tuner_ops.set_params(fe, p); |
| if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0); |
| } |
| |
| tda10023_set_symbolrate (state, p->u.qam.symbol_rate); |
| tda10023_writereg (state, 0x05, qamvals[qam][1]); |
| tda10023_writereg (state, 0x08, qamvals[qam][2]); |
| tda10023_writereg (state, 0x09, qamvals[qam][3]); |
| tda10023_writereg (state, 0xb4, qamvals[qam][4]); |
| tda10023_writereg (state, 0xb6, qamvals[qam][5]); |
| |
| // tda10023_writereg (state, 0x04, (p->inversion?0x12:0x32)); |
| // tda10023_writebit (state, 0x04, 0x60, (p->inversion?0:0x20)); |
| tda10023_writebit (state, 0x04, 0x40, 0x40); |
| tda10023_setup_reg0 (state, qamvals[qam][0]); |
| |
| return 0; |
| } |
| |
| static int tda10023_read_status(struct dvb_frontend* fe, fe_status_t* status) |
| { |
| struct tda10023_state* state = fe->demodulator_priv; |
| int sync; |
| |
| *status = 0; |
| |
| //0x11[1] == CARLOCK -> Carrier locked |
| //0x11[2] == FSYNC -> Frame synchronisation |
| //0x11[3] == FEL -> Front End locked |
| //0x11[6] == NODVB -> DVB Mode Information |
| sync = tda10023_readreg (state, 0x11); |
| |
| if (sync & 2) |
| *status |= FE_HAS_SIGNAL|FE_HAS_CARRIER; |
| |
| if (sync & 4) |
| *status |= FE_HAS_SYNC|FE_HAS_VITERBI; |
| |
| if (sync & 8) |
| *status |= FE_HAS_LOCK; |
| |
| return 0; |
| } |
| |
| static int tda10023_read_ber(struct dvb_frontend* fe, u32* ber) |
| { |
| struct tda10023_state* state = fe->demodulator_priv; |
| u8 a,b,c; |
| a=tda10023_readreg(state, 0x14); |
| b=tda10023_readreg(state, 0x15); |
| c=tda10023_readreg(state, 0x16)&0xf; |
| tda10023_writebit (state, 0x10, 0xc0, 0x00); |
| |
| *ber = a | (b<<8)| (c<<16); |
| return 0; |
| } |
| |
| static int tda10023_read_signal_strength(struct dvb_frontend* fe, u16* strength) |
| { |
| struct tda10023_state* state = fe->demodulator_priv; |
| u8 ifgain=tda10023_readreg(state, 0x2f); |
| |
| u16 gain = ((255-tda10023_readreg(state, 0x17))) + (255-ifgain)/16; |
| // Max raw value is about 0xb0 -> Normalize to >0xf0 after 0x90 |
| if (gain>0x90) |
| gain=gain+2*(gain-0x90); |
| if (gain>255) |
| gain=255; |
| |
| *strength = (gain<<8)|gain; |
| return 0; |
| } |
| |
| static int tda10023_read_snr(struct dvb_frontend* fe, u16* snr) |
| { |
| struct tda10023_state* state = fe->demodulator_priv; |
| |
| u8 quality = ~tda10023_readreg(state, 0x18); |
| *snr = (quality << 8) | quality; |
| return 0; |
| } |
| |
| static int tda10023_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks) |
| { |
| struct tda10023_state* state = fe->demodulator_priv; |
| u8 a,b,c,d; |
| a= tda10023_readreg (state, 0x74); |
| b= tda10023_readreg (state, 0x75); |
| c= tda10023_readreg (state, 0x76); |
| d= tda10023_readreg (state, 0x77); |
| *ucblocks = a | (b<<8)|(c<<16)|(d<<24); |
| |
| tda10023_writebit (state, 0x10, 0x20,0x00); |
| tda10023_writebit (state, 0x10, 0x20,0x20); |
| tda10023_writebit (state, 0x13, 0x01, 0x00); |
| |
| return 0; |
| } |
| |
| static int tda10023_get_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *p) |
| { |
| struct tda10023_state* state = fe->demodulator_priv; |
| int sync,inv; |
| s8 afc = 0; |
| |
| sync = tda10023_readreg(state, 0x11); |
| afc = tda10023_readreg(state, 0x19); |
| inv = tda10023_readreg(state, 0x04); |
| |
| if (verbose) { |
| /* AFC only valid when carrier has been recovered */ |
| printk(sync & 2 ? "DVB: TDA10023(%d): AFC (%d) %dHz\n" : |
| "DVB: TDA10023(%d): [AFC (%d) %dHz]\n", |
| state->frontend.dvb->num, afc, |
| -((s32)p->u.qam.symbol_rate * afc) >> 10); |
| } |
| |
| p->inversion = (inv&0x20?0:1); |
| p->u.qam.modulation = ((state->reg0 >> 2) & 7) + QAM_16; |
| |
| p->u.qam.fec_inner = FEC_NONE; |
| p->frequency = ((p->frequency + 31250) / 62500) * 62500; |
| |
| if (sync & 2) |
| p->frequency -= ((s32)p->u.qam.symbol_rate * afc) >> 10; |
| |
| return 0; |
| } |
| |
| static int tda10023_sleep(struct dvb_frontend* fe) |
| { |
| struct tda10023_state* state = fe->demodulator_priv; |
| |
| tda10023_writereg (state, 0x1b, 0x02); /* pdown ADC */ |
| tda10023_writereg (state, 0x00, 0x80); /* standby */ |
| |
| return 0; |
| } |
| |
| static int tda10023_i2c_gate_ctrl(struct dvb_frontend* fe, int enable) |
| { |
| struct tda10023_state* state = fe->demodulator_priv; |
| |
| if (enable) { |
| lock_tuner(state); |
| } else { |
| unlock_tuner(state); |
| } |
| return 0; |
| } |
| |
| static void tda10023_release(struct dvb_frontend* fe) |
| { |
| struct tda10023_state* state = fe->demodulator_priv; |
| kfree(state); |
| } |
| |
| static struct dvb_frontend_ops tda10023_ops; |
| |
| struct dvb_frontend* tda10023_attach(const struct tda1002x_config* config, |
| struct i2c_adapter* i2c, |
| u8 pwm) |
| { |
| struct tda10023_state* state = NULL; |
| int i; |
| |
| /* allocate memory for the internal state */ |
| state = kmalloc(sizeof(struct tda10023_state), GFP_KERNEL); |
| if (state == NULL) goto error; |
| |
| /* setup the state */ |
| state->config = config; |
| state->i2c = i2c; |
| memcpy(&state->frontend.ops, &tda10023_ops, sizeof(struct dvb_frontend_ops)); |
| state->pwm = pwm; |
| for (i=0; i < sizeof(tda10023_inittab)/sizeof(*tda10023_inittab);i+=3) { |
| if (tda10023_inittab[i] == 0x00) { |
| state->reg0 = tda10023_inittab[i+2]; |
| break; |
| } |
| } |
| |
| // Wakeup if in standby |
| tda10023_writereg (state, 0x00, 0x33); |
| /* check if the demod is there */ |
| if ((tda10023_readreg(state, 0x1a) & 0xf0) != 0x70) goto error; |
| |
| /* create dvb_frontend */ |
| memcpy(&state->frontend.ops, &tda10023_ops, sizeof(struct dvb_frontend_ops)); |
| state->frontend.demodulator_priv = state; |
| return &state->frontend; |
| |
| error: |
| kfree(state); |
| return NULL; |
| } |
| |
| static struct dvb_frontend_ops tda10023_ops = { |
| |
| .info = { |
| .name = "Philips TDA10023 DVB-C", |
| .type = FE_QAM, |
| .frequency_stepsize = 62500, |
| .frequency_min = 51000000, |
| .frequency_max = 858000000, |
| .symbol_rate_min = (SYSCLK/2)/64, /* SACLK/64 == (SYSCLK/2)/64 */ |
| .symbol_rate_max = (SYSCLK/2)/4, /* SACLK/4 */ |
| .caps = 0x400 | //FE_CAN_QAM_4 |
| FE_CAN_QAM_16 | FE_CAN_QAM_32 | FE_CAN_QAM_64 | |
| FE_CAN_QAM_128 | FE_CAN_QAM_256 | |
| FE_CAN_FEC_AUTO |
| }, |
| |
| .release = tda10023_release, |
| |
| .init = tda10023_init, |
| .sleep = tda10023_sleep, |
| .i2c_gate_ctrl = tda10023_i2c_gate_ctrl, |
| |
| .set_frontend = tda10023_set_parameters, |
| .get_frontend = tda10023_get_frontend, |
| |
| .read_status = tda10023_read_status, |
| .read_ber = tda10023_read_ber, |
| .read_signal_strength = tda10023_read_signal_strength, |
| .read_snr = tda10023_read_snr, |
| .read_ucblocks = tda10023_read_ucblocks, |
| }; |
| |
| |
| MODULE_DESCRIPTION("Philips TDA10023 DVB-C demodulator driver"); |
| MODULE_AUTHOR("Georg Acher, Hartmut Birr"); |
| MODULE_LICENSE("GPL"); |
| |
| EXPORT_SYMBOL(tda10023_attach); |