2     TDA10021  - Single Chip Cable Channel Receiver driver module
3 	       used on the Siemens DVB-C cards
75 	struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = buf, .len = 2 };  in _tda10021_writereg()
78 	ret = i2c_transfer (state->i2c, &msg, 1);  in _tda10021_writereg()
81 			state->frontend.dvb->num, __func__, reg, data, ret);  in _tda10021_writereg()
84 	return (ret != 1) ? -EREMOTEIO : 0;  in _tda10021_writereg()
91 …struct i2c_msg msg [] = { { .addr = state->config->demod_address, .flags = 0, .buf = b0, .len = 1 …  in tda10021_readreg()
92 				  { .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = b1, .len = 1 } };  in tda10021_readreg()
95 	ret = i2c_transfer (state->i2c, msg, 2);  in tda10021_readreg()
107 	struct i2c_msg msg = {.addr=state->config->demod_address, .flags=0, .buf=buf, .len=2};  in lock_tuner()
109 	if(i2c_transfer(state->i2c, &msg, 1) != 1)  in lock_tuner()
112 		return -EREMOTEIO;  in lock_tuner()
121 	struct i2c_msg msg_post={.addr=state->config->demod_address, .flags=0, .buf=buf, .len=2};  in unlock_tuner()
123 	if(i2c_transfer(state->i2c, &msg_post, 1) != 1)  in unlock_tuner()
126 		return -EREMOTEIO;  in unlock_tuner()
132 			       enum fe_spectral_inversion inversion)  in tda10021_setup_reg0()  argument
134 	reg0 |= state->reg0 & 0x63;  in tda10021_setup_reg0()
136 	if ((INVERSION_ON == inversion) ^ (state->config->invert == 0))  in tda10021_setup_reg0()
144 	state->reg0 = reg0;  in tda10021_setup_reg0()
203 	struct tda10021_state* state = fe->demodulator_priv;  in tda10021_init()
206 	dprintk("DVB: TDA10021(%d): init chip\n", fe->adapter->num);  in tda10021_init()
213 	_tda10021_writereg (state, 0x34, state->pwm);  in tda10021_init()
216 	//0x2A[3-0] == PDIV -> P multiplaying factor (P=PDIV+1)(default 0)  in tda10021_init()
217 	//0x2A[4] == BYPPLL -> Power down mode (default 1)  in tda10021_init()
218 	//0x2A[5] == LCK -> PLL Lock Flag  in tda10021_init()
219 	//0x2A[6] == POLAXIN -> Polarity of the input reference clock (default 0)  in tda10021_init()
232 	struct dtv_frontend_properties *c = &fe->dtv_property_cache;  in tda10021_set_parameters()
233 	u32 delsys  = c->delivery_system;  in tda10021_set_parameters()
234 	unsigned qam = c->modulation;  in tda10021_set_parameters()
237 	struct tda10021_state* state = fe->demodulator_priv;  in tda10021_set_parameters()
256 		return -EINVAL;  in tda10021_set_parameters()
261 	 *           "if (qam > 5) return -EINVAL;"  in tda10021_set_parameters()
275 		return -EINVAL;  in tda10021_set_parameters()
278 	if (c->inversion != INVERSION_ON && c->inversion != INVERSION_OFF)  in tda10021_set_parameters()
279 		return -EINVAL;  in tda10021_set_parameters()
281 	/*printk("tda10021: set frequency to %d qam=%d symrate=%d\n", p->frequency,qam,p->symbol_rate);*/  in tda10021_set_parameters()
283 	if (fe->ops.tuner_ops.set_params) {  in tda10021_set_parameters()
284 		fe->ops.tuner_ops.set_params(fe);  in tda10021_set_parameters()
285 		if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0);  in tda10021_set_parameters()
288 	tda10021_set_symbolrate(state, c->symbol_rate);  in tda10021_set_parameters()
289 	_tda10021_writereg(state, 0x34, state->pwm);  in tda10021_set_parameters()
297 	 * Bit 0 == 0 means roll-off = 0.15 (Annex A)  in tda10021_set_parameters()
298 	 *	 == 1 means roll-off = 0.13 (Annex C)  in tda10021_set_parameters()
305 	tda10021_setup_reg0(state, qam_params[qam].conf, c->inversion);  in tda10021_set_parameters()
313 	struct tda10021_state* state = fe->demodulator_priv;  in tda10021_read_status()
317 	//0x11[0] == EQALGO -> Equalizer algorithms state  in tda10021_read_status()
318 	//0x11[1] == CARLOCK -> Carrier locked  in tda10021_read_status()
319 	//0x11[2] == FSYNC -> Frame synchronisation  in tda10021_read_status()
320 	//0x11[3] == FEL -> Front End locked  in tda10021_read_status()
321 	//0x11[6] == NODVB -> DVB Mode Information  in tda10021_read_status()
338 	struct tda10021_state* state = fe->demodulator_priv;  in tda10021_read_ber()
352 	struct tda10021_state* state = fe->demodulator_priv;  in tda10021_read_signal_strength()
366 	struct tda10021_state* state = fe->demodulator_priv;  in tda10021_read_snr()
376 	struct tda10021_state* state = fe->demodulator_priv;  in tda10021_read_ucblocks()
392 	struct tda10021_state* state = fe->demodulator_priv;  in tda10021_get_frontend()
402 			state->frontend.dvb->num, afc,  in tda10021_get_frontend()
403 		       -((s32)p->symbol_rate * afc) >> 10);  in tda10021_get_frontend()
406 …p->inversion = ((state->reg0 & 0x20) == 0x20) ^ (state->config->invert != 0) ? INVERSION_ON : INVE…  in tda10021_get_frontend()
407 	p->modulation = ((state->reg0 >> 2) & 7) + QAM_16;  in tda10021_get_frontend()
409 	p->fec_inner = FEC_NONE;  in tda10021_get_frontend()
410 	p->frequency = ((p->frequency + 31250) / 62500) * 62500;  in tda10021_get_frontend()
413 		p->frequency -= ((s32)p->symbol_rate * afc) >> 10;  in tda10021_get_frontend()
420 	struct tda10021_state* state = fe->demodulator_priv;  in tda10021_i2c_gate_ctrl()
432 	struct tda10021_state* state = fe->demodulator_priv;  in tda10021_sleep()
442 	struct tda10021_state* state = fe->demodulator_priv;  in tda10021_release()
460 	state->config = config;  in tda10021_attach()
461 	state->i2c = i2c;  in tda10021_attach()
462 	state->pwm = pwm;  in tda10021_attach()
463 	state->reg0 = tda10021_inittab[0];  in tda10021_attach()
473 	printk("TDA10021: i2c-addr = 0x%02x, id = 0x%02x\n",  in tda10021_attach()
474 	       state->config->demod_address, id);  in tda10021_attach()
477 	memcpy(&state->frontend.ops, &tda10021_ops, sizeof(struct dvb_frontend_ops));  in tda10021_attach()
478 	state->frontend.demodulator_priv = state;  in tda10021_attach()
479 	return &state->frontend;  in tda10021_attach()
489 		.name = "Philips TDA10021 DVB-C",
524 MODULE_DESCRIPTION("Philips TDA10021 DVB-C demodulator driver");