diff options
Diffstat (limited to 'drivers/media/dvb/frontends/tda10021.c')
| -rw-r--r-- | drivers/media/dvb/frontends/tda10021.c | 528 |
1 files changed, 0 insertions, 528 deletions
diff --git a/drivers/media/dvb/frontends/tda10021.c b/drivers/media/dvb/frontends/tda10021.c deleted file mode 100644 index 1bff7f457e19..000000000000 --- a/drivers/media/dvb/frontends/tda10021.c +++ /dev/null @@ -1,528 +0,0 @@ -/* - TDA10021 - Single Chip Cable Channel Receiver driver module - used on the Siemens DVB-C cards - - 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 "dvb_frontend.h" -#include "tda1002x.h" - - -struct tda10021_state { - struct i2c_adapter* i2c; - /* configuration settings */ - const struct tda1002x_config* config; - struct dvb_frontend frontend; - - u8 pwm; - u8 reg0; -}; - - -#if 0 -#define dprintk(x...) printk(x) -#else -#define dprintk(x...) -#endif - -static int verbose; - -#define XIN 57840000UL - -#define FIN (XIN >> 4) - -static int tda10021_inittab_size = 0x40; -static u8 tda10021_inittab[0x40]= -{ - 0x73, 0x6a, 0x23, 0x0a, 0x02, 0x37, 0x77, 0x1a, - 0x37, 0x6a, 0x17, 0x8a, 0x1e, 0x86, 0x43, 0x40, - 0xb8, 0x3f, 0xa1, 0x00, 0xcd, 0x01, 0x00, 0xff, - 0x11, 0x00, 0x7c, 0x31, 0x30, 0x20, 0x00, 0x00, - 0x02, 0x00, 0x00, 0x7d, 0x00, 0x00, 0x00, 0x00, - 0x07, 0x00, 0x33, 0x11, 0x0d, 0x95, 0x08, 0x58, - 0x00, 0x00, 0x80, 0x00, 0x80, 0xff, 0x00, 0x00, - 0x04, 0x2d, 0x2f, 0xff, 0x00, 0x00, 0x00, 0x00, -}; - -static int _tda10021_writereg (struct tda10021_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: TDA10021(%d): %s, writereg error " - "(reg == 0x%02x, val == 0x%02x, ret == %i)\n", - state->frontend.dvb->num, __func__, reg, data, ret); - - msleep(10); - return (ret != 1) ? -EREMOTEIO : 0; -} - -static u8 tda10021_readreg (struct tda10021_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); - // Don't print an error message if the id is read. - if (ret != 2 && reg != 0x1a) - printk("DVB: TDA10021: %s: readreg error (ret == %i)\n", - __func__, ret); - return b1[0]; -} - -//get access to tuner -static int lock_tuner(struct tda10021_state* state) -{ - u8 buf[2] = { 0x0f, tda10021_inittab[0x0f] | 0x80 }; - struct i2c_msg msg = {.addr=state->config->demod_address, .flags=0, .buf=buf, .len=2}; - - if(i2c_transfer(state->i2c, &msg, 1) != 1) - { - printk("tda10021: lock tuner fails\n"); - return -EREMOTEIO; - } - return 0; -} - -//release access from tuner -static int unlock_tuner(struct tda10021_state* state) -{ - u8 buf[2] = { 0x0f, tda10021_inittab[0x0f] & 0x7f }; - 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("tda10021: unlock tuner fails\n"); - return -EREMOTEIO; - } - return 0; -} - -static int tda10021_setup_reg0 (struct tda10021_state* state, u8 reg0, - fe_spectral_inversion_t inversion) -{ - reg0 |= state->reg0 & 0x63; - - if ((INVERSION_ON == inversion) ^ (state->config->invert == 0)) - reg0 &= ~0x20; - else - reg0 |= 0x20; - - _tda10021_writereg (state, 0x00, reg0 & 0xfe); - _tda10021_writereg (state, 0x00, reg0 | 0x01); - - state->reg0 = reg0; - return 0; -} - -static int tda10021_set_symbolrate (struct tda10021_state* state, u32 symbolrate) -{ - s32 BDR; - s32 BDRI; - s16 SFIL=0; - u16 NDEC = 0; - u32 tmp, ratio; - - if (symbolrate > XIN/2) - symbolrate = XIN/2; - if (symbolrate < 500000) - symbolrate = 500000; - - if (symbolrate < XIN/16) NDEC = 1; - if (symbolrate < XIN/32) NDEC = 2; - if (symbolrate < XIN/64) NDEC = 3; - - if (symbolrate < (u32)(XIN/12.3)) SFIL = 1; - if (symbolrate < (u32)(XIN/16)) SFIL = 0; - if (symbolrate < (u32)(XIN/24.6)) SFIL = 1; - if (symbolrate < (u32)(XIN/32)) SFIL = 0; - if (symbolrate < (u32)(XIN/49.2)) SFIL = 1; - if (symbolrate < (u32)(XIN/64)) SFIL = 0; - if (symbolrate < (u32)(XIN/98.4)) SFIL = 1; - - symbolrate <<= NDEC; - ratio = (symbolrate << 4) / FIN; - tmp = ((symbolrate << 4) % FIN) << 8; - ratio = (ratio << 8) + tmp / FIN; - tmp = (tmp % FIN) << 8; - ratio = (ratio << 8) + DIV_ROUND_CLOSEST(tmp, FIN); - - BDR = ratio; - BDRI = (((XIN << 5) / symbolrate) + 1) / 2; - - if (BDRI > 0xFF) - BDRI = 0xFF; - - SFIL = (SFIL << 4) | tda10021_inittab[0x0E]; - - NDEC = (NDEC << 6) | tda10021_inittab[0x03]; - - _tda10021_writereg (state, 0x03, NDEC); - _tda10021_writereg (state, 0x0a, BDR&0xff); - _tda10021_writereg (state, 0x0b, (BDR>> 8)&0xff); - _tda10021_writereg (state, 0x0c, (BDR>>16)&0x3f); - - _tda10021_writereg (state, 0x0d, BDRI); - _tda10021_writereg (state, 0x0e, SFIL); - - return 0; -} - -static int tda10021_init (struct dvb_frontend *fe) -{ - struct tda10021_state* state = fe->demodulator_priv; - int i; - - dprintk("DVB: TDA10021(%d): init chip\n", fe->adapter->num); - - //_tda10021_writereg (fe, 0, 0); - - for (i=0; i<tda10021_inittab_size; i++) - _tda10021_writereg (state, i, tda10021_inittab[i]); - - _tda10021_writereg (state, 0x34, state->pwm); - - //Comment by markus - //0x2A[3-0] == PDIV -> P multiplaying factor (P=PDIV+1)(default 0) - //0x2A[4] == BYPPLL -> Power down mode (default 1) - //0x2A[5] == LCK -> PLL Lock Flag - //0x2A[6] == POLAXIN -> Polarity of the input reference clock (default 0) - - //Activate PLL - _tda10021_writereg(state, 0x2a, tda10021_inittab[0x2a] & 0xef); - return 0; -} - -struct qam_params { - u8 conf, agcref, lthr, mseth, aref; -}; - -static int tda10021_set_parameters(struct dvb_frontend *fe) -{ - struct dtv_frontend_properties *c = &fe->dtv_property_cache; - u32 delsys = c->delivery_system; - unsigned qam = c->modulation; - bool is_annex_c; - u32 reg0x3d; - struct tda10021_state* state = fe->demodulator_priv; - static const struct qam_params qam_params[] = { - /* Modulation Conf AGCref LTHR MSETH AREF */ - [QPSK] = { 0x14, 0x78, 0x78, 0x8c, 0x96 }, - [QAM_16] = { 0x00, 0x8c, 0x87, 0xa2, 0x91 }, - [QAM_32] = { 0x04, 0x8c, 0x64, 0x74, 0x96 }, - [QAM_64] = { 0x08, 0x6a, 0x46, 0x43, 0x6a }, - [QAM_128] = { 0x0c, 0x78, 0x36, 0x34, 0x7e }, - [QAM_256] = { 0x10, 0x5c, 0x26, 0x23, 0x6b }, - }; - - switch (delsys) { - case SYS_DVBC_ANNEX_A: - is_annex_c = false; - break; - case SYS_DVBC_ANNEX_C: - is_annex_c = true; - break; - default: - return -EINVAL; - } - - /* - * gcc optimizes the code bellow the same way as it would code: - * "if (qam > 5) return -EINVAL;" - * Yet, the code is clearer, as it shows what QAM standards are - * supported by the driver, and avoids the usage of magic numbers on - * it. - */ - switch (qam) { - case QPSK: - case QAM_16: - case QAM_32: - case QAM_64: - case QAM_128: - case QAM_256: - break; - default: - return -EINVAL; - } - - if (c->inversion != INVERSION_ON && c->inversion != INVERSION_OFF) - return -EINVAL; - - /*printk("tda10021: set frequency to %d qam=%d symrate=%d\n", p->frequency,qam,p->symbol_rate);*/ - - if (fe->ops.tuner_ops.set_params) { - fe->ops.tuner_ops.set_params(fe); - if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0); - } - - tda10021_set_symbolrate(state, c->symbol_rate); - _tda10021_writereg(state, 0x34, state->pwm); - - _tda10021_writereg(state, 0x01, qam_params[qam].agcref); - _tda10021_writereg(state, 0x05, qam_params[qam].lthr); - _tda10021_writereg(state, 0x08, qam_params[qam].mseth); - _tda10021_writereg(state, 0x09, qam_params[qam].aref); - - /* - * Bit 0 == 0 means roll-off = 0.15 (Annex A) - * == 1 means roll-off = 0.13 (Annex C) - */ - reg0x3d = tda10021_readreg (state, 0x3d); - if (is_annex_c) - _tda10021_writereg (state, 0x3d, 0x01 | reg0x3d); - else - _tda10021_writereg (state, 0x3d, 0xfe & reg0x3d); - tda10021_setup_reg0(state, qam_params[qam].conf, c->inversion); - - return 0; -} - -static int tda10021_read_status(struct dvb_frontend* fe, fe_status_t* status) -{ - struct tda10021_state* state = fe->demodulator_priv; - int sync; - - *status = 0; - //0x11[0] == EQALGO -> Equalizer algorithms state - //0x11[1] == CARLOCK -> Carrier locked - //0x11[2] == FSYNC -> Frame synchronisation - //0x11[3] == FEL -> Front End locked - //0x11[6] == NODVB -> DVB Mode Information - sync = tda10021_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 tda10021_read_ber(struct dvb_frontend* fe, u32* ber) -{ - struct tda10021_state* state = fe->demodulator_priv; - - u32 _ber = tda10021_readreg(state, 0x14) | - (tda10021_readreg(state, 0x15) << 8) | - ((tda10021_readreg(state, 0x16) & 0x0f) << 16); - _tda10021_writereg(state, 0x10, (tda10021_readreg(state, 0x10) & ~0xc0) - | (tda10021_inittab[0x10] & 0xc0)); - *ber = 10 * _ber; - - return 0; -} - -static int tda10021_read_signal_strength(struct dvb_frontend* fe, u16* strength) -{ - struct tda10021_state* state = fe->demodulator_priv; - - u8 config = tda10021_readreg(state, 0x02); - u8 gain = tda10021_readreg(state, 0x17); - if (config & 0x02) - /* the agc value is inverted */ - gain = ~gain; - *strength = (gain << 8) | gain; - - return 0; -} - -static int tda10021_read_snr(struct dvb_frontend* fe, u16* snr) -{ - struct tda10021_state* state = fe->demodulator_priv; - - u8 quality = ~tda10021_readreg(state, 0x18); - *snr = (quality << 8) | quality; - - return 0; -} - -static int tda10021_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks) -{ - struct tda10021_state* state = fe->demodulator_priv; - - *ucblocks = tda10021_readreg (state, 0x13) & 0x7f; - if (*ucblocks == 0x7f) - *ucblocks = 0xffffffff; - - /* reset uncorrected block counter */ - _tda10021_writereg (state, 0x10, tda10021_inittab[0x10] & 0xdf); - _tda10021_writereg (state, 0x10, tda10021_inittab[0x10]); - - return 0; -} - -static int tda10021_get_frontend(struct dvb_frontend *fe) -{ - struct dtv_frontend_properties *p = &fe->dtv_property_cache; - struct tda10021_state* state = fe->demodulator_priv; - int sync; - s8 afc = 0; - - sync = tda10021_readreg(state, 0x11); - afc = tda10021_readreg(state, 0x19); - if (verbose) { - /* AFC only valid when carrier has been recovered */ - printk(sync & 2 ? "DVB: TDA10021(%d): AFC (%d) %dHz\n" : - "DVB: TDA10021(%d): [AFC (%d) %dHz]\n", - state->frontend.dvb->num, afc, - -((s32)p->symbol_rate * afc) >> 10); - } - - p->inversion = ((state->reg0 & 0x20) == 0x20) ^ (state->config->invert != 0) ? INVERSION_ON : INVERSION_OFF; - p->modulation = ((state->reg0 >> 2) & 7) + QAM_16; - - p->fec_inner = FEC_NONE; - p->frequency = ((p->frequency + 31250) / 62500) * 62500; - - if (sync & 2) - p->frequency -= ((s32)p->symbol_rate * afc) >> 10; - - return 0; -} - -static int tda10021_i2c_gate_ctrl(struct dvb_frontend* fe, int enable) -{ - struct tda10021_state* state = fe->demodulator_priv; - - if (enable) { - lock_tuner(state); - } else { - unlock_tuner(state); - } - return 0; -} - -static int tda10021_sleep(struct dvb_frontend* fe) -{ - struct tda10021_state* state = fe->demodulator_priv; - - _tda10021_writereg (state, 0x1b, 0x02); /* pdown ADC */ - _tda10021_writereg (state, 0x00, 0x80); /* standby */ - - return 0; -} - -static void tda10021_release(struct dvb_frontend* fe) -{ - struct tda10021_state* state = fe->demodulator_priv; - kfree(state); -} - -static struct dvb_frontend_ops tda10021_ops; - -struct dvb_frontend* tda10021_attach(const struct tda1002x_config* config, - struct i2c_adapter* i2c, - u8 pwm) -{ - struct tda10021_state* state = NULL; - u8 id; - - /* allocate memory for the internal state */ - state = kzalloc(sizeof(struct tda10021_state), GFP_KERNEL); - if (state == NULL) goto error; - - /* setup the state */ - state->config = config; - state->i2c = i2c; - state->pwm = pwm; - state->reg0 = tda10021_inittab[0]; - - /* check if the demod is there */ - id = tda10021_readreg(state, 0x1a); - if ((id & 0xf0) != 0x70) goto error; - - /* Don't claim TDA10023 */ - if (id == 0x7d) - goto error; - - printk("TDA10021: i2c-addr = 0x%02x, id = 0x%02x\n", - state->config->demod_address, id); - - /* create dvb_frontend */ - memcpy(&state->frontend.ops, &tda10021_ops, sizeof(struct dvb_frontend_ops)); - state->frontend.demodulator_priv = state; - return &state->frontend; - -error: - kfree(state); - return NULL; -} - -static struct dvb_frontend_ops tda10021_ops = { - .delsys = { SYS_DVBC_ANNEX_A, SYS_DVBC_ANNEX_C }, - .info = { - .name = "Philips TDA10021 DVB-C", - .frequency_stepsize = 62500, - .frequency_min = 47000000, - .frequency_max = 862000000, - .symbol_rate_min = (XIN/2)/64, /* SACLK/64 == (XIN/2)/64 */ - .symbol_rate_max = (XIN/2)/4, /* SACLK/4 */ - #if 0 - .frequency_tolerance = ???, - .symbol_rate_tolerance = ???, /* ppm */ /* == 8% (spec p. 5) */ - #endif - .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 = tda10021_release, - - .init = tda10021_init, - .sleep = tda10021_sleep, - .i2c_gate_ctrl = tda10021_i2c_gate_ctrl, - - .set_frontend = tda10021_set_parameters, - .get_frontend = tda10021_get_frontend, - - .read_status = tda10021_read_status, - .read_ber = tda10021_read_ber, - .read_signal_strength = tda10021_read_signal_strength, - .read_snr = tda10021_read_snr, - .read_ucblocks = tda10021_read_ucblocks, -}; - -module_param(verbose, int, 0644); -MODULE_PARM_DESC(verbose, "print AFC offset after tuning for debugging the PWM setting"); - -MODULE_DESCRIPTION("Philips TDA10021 DVB-C demodulator driver"); -MODULE_AUTHOR("Ralph Metzler, Holger Waechtler, Markus Schulz"); -MODULE_LICENSE("GPL"); - -EXPORT_SYMBOL(tda10021_attach); |