diff options
Diffstat (limited to 'drivers/media/dvb/frontends/tda10023.c')
| -rw-r--r-- | drivers/media/dvb/frontends/tda10023.c | 540 |
1 files changed, 540 insertions, 0 deletions
diff --git a/drivers/media/dvb/frontends/tda10023.c b/drivers/media/dvb/frontends/tda10023.c new file mode 100644 index 000000000000..da796e784be3 --- /dev/null +++ b/drivers/media/dvb/frontends/tda10023.c @@ -0,0 +1,540 @@ +/* + 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); |