2 Driver for ST STV0299 demodulator
4 Copyright (C) 2001-2002 Convergence Integrated Media GmbH
5 <ralph@convergence.de>,
6 <holger@convergence.de>,
12 Copyright (C) 2002 by Peter Schildmann <peter.schildmann@web.de>
17 Copyright (C) 2002 Felix Domke <tmbinc@elitedvb.net>
18 & Andreas Oberritter <obi@linuxtv.org>
21 Support for Samsung TBMU24112IMB used on Technisat SkyStar2 rev. 2.6B
23 Copyright (C) 2003 Vadim Catana <skystar@moldova.cc>:
25 Support for Philips SU1278 on Technotrend hardware
27 Copyright (C) 2004 Andrew de Quincey <adq_dvb@lidskialf.net>
29 This program is free software; you can redistribute it and/or modify
30 it under the terms of the GNU General Public License as published by
31 the Free Software Foundation; either version 2 of the License, or
32 (at your option) any later version.
34 This program is distributed in the hope that it will be useful,
35 but WITHOUT ANY WARRANTY; without even the implied warranty of
36 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
37 GNU General Public License for more details.
39 You should have received a copy of the GNU General Public License
40 along with this program; if not, write to the Free Software
41 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
45 #include <linux/init.h>
46 #include <linux/kernel.h>
47 #include <linux/module.h>
48 #include <linux/moduleparam.h>
49 #include <linux/string.h>
50 #include <linux/slab.h>
51 #include <linux/jiffies.h>
52 #include <asm/div64.h>
54 #include "dvb_frontend.h"
57 struct stv0299_state {
58 struct i2c_adapter* i2c;
59 struct dvb_frontend_ops ops;
60 const struct stv0299_config* config;
61 struct dvb_frontend frontend;
66 fe_code_rate_t fec_inner;
71 #define STATUS_UCBLOCKS 1
74 static int debug_legacy_dish_switch;
75 #define dprintk(args...) \
77 if (debug) printk(KERN_DEBUG "stv0299: " args); \
81 static int stv0299_writeregI (struct stv0299_state* state, u8 reg, u8 data)
84 u8 buf [] = { reg, data };
85 struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = buf, .len = 2 };
87 ret = i2c_transfer (state->i2c, &msg, 1);
90 dprintk("%s: writereg error (reg == 0x%02x, val == 0x%02x, "
91 "ret == %i)\n", __FUNCTION__, reg, data, ret);
93 return (ret != 1) ? -EREMOTEIO : 0;
96 int stv0299_writereg (struct dvb_frontend* fe, u8 reg, u8 data)
98 struct stv0299_state* state = fe->demodulator_priv;
100 return stv0299_writeregI(state, reg, data);
103 static u8 stv0299_readreg (struct stv0299_state* state, u8 reg)
108 struct i2c_msg msg [] = { { .addr = state->config->demod_address, .flags = 0, .buf = b0, .len = 1 },
109 { .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = b1, .len = 1 } };
111 ret = i2c_transfer (state->i2c, msg, 2);
114 dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n",
115 __FUNCTION__, reg, ret);
120 static int stv0299_readregs (struct stv0299_state* state, u8 reg1, u8 *b, u8 len)
123 struct i2c_msg msg [] = { { .addr = state->config->demod_address, .flags = 0, .buf = ®1, .len = 1 },
124 { .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = b, .len = len } };
126 ret = i2c_transfer (state->i2c, msg, 2);
129 dprintk("%s: readreg error (ret == %i)\n", __FUNCTION__, ret);
131 return ret == 2 ? 0 : ret;
134 static int stv0299_set_FEC (struct stv0299_state* state, fe_code_rate_t fec)
136 dprintk ("%s\n", __FUNCTION__);
141 return stv0299_writeregI (state, 0x31, 0x1f);
145 return stv0299_writeregI (state, 0x31, 0x01);
149 return stv0299_writeregI (state, 0x31, 0x02);
153 return stv0299_writeregI (state, 0x31, 0x04);
157 return stv0299_writeregI (state, 0x31, 0x08);
161 return stv0299_writeregI (state, 0x31, 0x10);
170 static fe_code_rate_t stv0299_get_fec (struct stv0299_state* state)
172 static fe_code_rate_t fec_tab [] = { FEC_2_3, FEC_3_4, FEC_5_6,
176 dprintk ("%s\n", __FUNCTION__);
178 index = stv0299_readreg (state, 0x1b);
184 return fec_tab [index];
187 static int stv0299_wait_diseqc_fifo (struct stv0299_state* state, int timeout)
189 unsigned long start = jiffies;
191 dprintk ("%s\n", __FUNCTION__);
193 while (stv0299_readreg(state, 0x0a) & 1) {
194 if (jiffies - start > timeout) {
195 dprintk ("%s: timeout!!\n", __FUNCTION__);
204 static int stv0299_wait_diseqc_idle (struct stv0299_state* state, int timeout)
206 unsigned long start = jiffies;
208 dprintk ("%s\n", __FUNCTION__);
210 while ((stv0299_readreg(state, 0x0a) & 3) != 2 ) {
211 if (jiffies - start > timeout) {
212 dprintk ("%s: timeout!!\n", __FUNCTION__);
221 static int stv0299_set_symbolrate (struct dvb_frontend* fe, u32 srate)
223 struct stv0299_state* state = fe->demodulator_priv;
227 // check rate is within limits
228 if ((srate < 1000000) || (srate > 45000000)) return -EINVAL;
230 // calculate value to program
232 big += (state->config->mclk-1); // round correctly
233 do_div(big, state->config->mclk);
236 return state->config->set_symbol_rate(fe, srate, ratio);
239 static int stv0299_get_symbolrate (struct stv0299_state* state)
241 u32 Mclk = state->config->mclk / 4096L;
247 dprintk ("%s\n", __FUNCTION__);
249 stv0299_readregs (state, 0x1f, sfr, 3);
250 stv0299_readregs (state, 0x1a, &rtf, 1);
252 srate = (sfr[0] << 8) | sfr[1];
255 srate += (sfr[2] >> 4) * Mclk / 256;
256 offset = (s32) rtf * (srate / 4096L);
259 dprintk ("%s : srate = %i\n", __FUNCTION__, srate);
260 dprintk ("%s : ofset = %i\n", __FUNCTION__, offset);
271 static int stv0299_send_diseqc_msg (struct dvb_frontend* fe,
272 struct dvb_diseqc_master_cmd *m)
274 struct stv0299_state* state = fe->demodulator_priv;
278 dprintk ("%s\n", __FUNCTION__);
280 if (stv0299_wait_diseqc_idle (state, 100) < 0)
283 val = stv0299_readreg (state, 0x08);
285 if (stv0299_writeregI (state, 0x08, (val & ~0x7) | 0x6)) /* DiSEqC mode */
288 for (i=0; i<m->msg_len; i++) {
289 if (stv0299_wait_diseqc_fifo (state, 100) < 0)
292 if (stv0299_writeregI (state, 0x09, m->msg[i]))
296 if (stv0299_wait_diseqc_idle (state, 100) < 0)
302 static int stv0299_send_diseqc_burst (struct dvb_frontend* fe, fe_sec_mini_cmd_t burst)
304 struct stv0299_state* state = fe->demodulator_priv;
307 dprintk ("%s\n", __FUNCTION__);
309 if (stv0299_wait_diseqc_idle (state, 100) < 0)
312 val = stv0299_readreg (state, 0x08);
314 if (stv0299_writeregI (state, 0x08, (val & ~0x7) | 0x2)) /* burst mode */
317 if (stv0299_writeregI (state, 0x09, burst == SEC_MINI_A ? 0x00 : 0xff))
320 if (stv0299_wait_diseqc_idle (state, 100) < 0)
323 if (stv0299_writeregI (state, 0x08, val))
329 static int stv0299_set_tone (struct dvb_frontend* fe, fe_sec_tone_mode_t tone)
331 struct stv0299_state* state = fe->demodulator_priv;
334 if (stv0299_wait_diseqc_idle (state, 100) < 0)
337 val = stv0299_readreg (state, 0x08);
341 return stv0299_writeregI (state, 0x08, val | 0x3);
344 return stv0299_writeregI (state, 0x08, (val & ~0x3) | 0x02);
351 static int stv0299_set_voltage (struct dvb_frontend* fe, fe_sec_voltage_t voltage)
353 struct stv0299_state* state = fe->demodulator_priv;
357 dprintk("%s: %s\n", __FUNCTION__,
358 voltage == SEC_VOLTAGE_13 ? "SEC_VOLTAGE_13" :
359 voltage == SEC_VOLTAGE_18 ? "SEC_VOLTAGE_18" : "??");
361 reg0x08 = stv0299_readreg (state, 0x08);
362 reg0x0c = stv0299_readreg (state, 0x0c);
365 * H/V switching over OP0, OP1 and OP2 are LNB power enable bits
369 if (voltage == SEC_VOLTAGE_OFF) {
370 stv0299_writeregI (state, 0x0c, 0x00); /* LNB power off! */
371 return stv0299_writeregI (state, 0x08, 0x00); /* LNB power off! */
374 stv0299_writeregI (state, 0x08, (reg0x08 & 0x3f) | (state->config->lock_output << 6));
378 if (state->config->volt13_op0_op1 == STV0299_VOLT13_OP0) reg0x0c |= 0x10;
379 else reg0x0c |= 0x40;
381 return stv0299_writeregI(state, 0x0c, reg0x0c);
384 return stv0299_writeregI(state, 0x0c, reg0x0c | 0x50);
390 static int stv0299_send_legacy_dish_cmd (struct dvb_frontend* fe, u32 cmd)
392 struct stv0299_state* state = fe->demodulator_priv;
398 struct timeval nexttime;
399 struct timeval tv[10];
401 reg0x08 = stv0299_readreg (state, 0x08);
402 reg0x0c = stv0299_readreg (state, 0x0c);
404 stv0299_writeregI (state, 0x08, (reg0x08 & 0x3f) | (state->config->lock_output << 6));
405 if (state->config->volt13_op0_op1 == STV0299_VOLT13_OP0)
409 if (debug_legacy_dish_switch)
410 printk ("%s switch command: 0x%04x\n",__FUNCTION__, cmd);
412 do_gettimeofday (&nexttime);
413 if (debug_legacy_dish_switch)
414 memcpy (&tv[0], &nexttime, sizeof (struct timeval));
415 stv0299_writeregI (state, 0x0c, reg0x0c | 0x50); /* set LNB to 18V */
417 dvb_frontend_sleep_until(&nexttime, 32000);
419 for (i=0; i<9; i++) {
420 if (debug_legacy_dish_switch)
421 do_gettimeofday (&tv[i+1]);
422 if((cmd & 0x01) != last) {
423 /* set voltage to (last ? 13V : 18V) */
424 stv0299_writeregI (state, 0x0c, reg0x0c | (last ? lv_mask : 0x50));
425 last = (last) ? 0 : 1;
431 dvb_frontend_sleep_until(&nexttime, 8000);
433 if (debug_legacy_dish_switch) {
434 printk ("%s(%d): switch delay (should be 32k followed by all 8k\n",
435 __FUNCTION__, fe->dvb->num);
436 for (i = 1; i < 10; i++)
437 printk ("%d: %d\n", i, timeval_usec_diff(tv[i-1] , tv[i]));
443 static int stv0299_init (struct dvb_frontend* fe)
445 struct stv0299_state* state = fe->demodulator_priv;
448 dprintk("stv0299: init chip\n");
450 for (i=0; !(state->config->inittab[i] == 0xff && state->config->inittab[i+1] == 0xff); i+=2)
451 stv0299_writeregI(state, state->config->inittab[i], state->config->inittab[i+1]);
453 if (state->config->pll_init) {
454 stv0299_writeregI(state, 0x05, 0xb5); /* enable i2c repeater on stv0299 */
455 state->config->pll_init(fe, state->i2c);
456 stv0299_writeregI(state, 0x05, 0x35); /* disable i2c repeater on stv0299 */
462 static int stv0299_read_status(struct dvb_frontend* fe, fe_status_t* status)
464 struct stv0299_state* state = fe->demodulator_priv;
466 u8 signal = 0xff - stv0299_readreg (state, 0x18);
467 u8 sync = stv0299_readreg (state, 0x1b);
469 dprintk ("%s : FE_READ_STATUS : VSTATUS: 0x%02x\n", __FUNCTION__, sync);
473 *status |= FE_HAS_SIGNAL;
476 *status |= FE_HAS_CARRIER;
479 *status |= FE_HAS_VITERBI;
482 *status |= FE_HAS_SYNC;
484 if ((sync & 0x98) == 0x98)
485 *status |= FE_HAS_LOCK;
490 static int stv0299_read_ber(struct dvb_frontend* fe, u32* ber)
492 struct stv0299_state* state = fe->demodulator_priv;
494 if (state->errmode != STATUS_BER) return 0;
495 *ber = (stv0299_readreg (state, 0x1d) << 8) | stv0299_readreg (state, 0x1e);
500 static int stv0299_read_signal_strength(struct dvb_frontend* fe, u16* strength)
502 struct stv0299_state* state = fe->demodulator_priv;
504 s32 signal = 0xffff - ((stv0299_readreg (state, 0x18) << 8)
505 | stv0299_readreg (state, 0x19));
507 dprintk ("%s : FE_READ_SIGNAL_STRENGTH : AGC2I: 0x%02x%02x, signal=0x%04x\n", __FUNCTION__,
508 stv0299_readreg (state, 0x18),
509 stv0299_readreg (state, 0x19), (int) signal);
511 signal = signal * 5 / 4;
512 *strength = (signal > 0xffff) ? 0xffff : (signal < 0) ? 0 : signal;
517 static int stv0299_read_snr(struct dvb_frontend* fe, u16* snr)
519 struct stv0299_state* state = fe->demodulator_priv;
521 s32 xsnr = 0xffff - ((stv0299_readreg (state, 0x24) << 8)
522 | stv0299_readreg (state, 0x25));
523 xsnr = 3 * (xsnr - 0xa100);
524 *snr = (xsnr > 0xffff) ? 0xffff : (xsnr < 0) ? 0 : xsnr;
529 static int stv0299_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
531 struct stv0299_state* state = fe->demodulator_priv;
533 if (state->errmode != STATUS_UCBLOCKS) *ucblocks = 0;
534 else *ucblocks = (stv0299_readreg (state, 0x1d) << 8) | stv0299_readreg (state, 0x1e);
539 static int stv0299_set_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters * p)
541 struct stv0299_state* state = fe->demodulator_priv;
544 dprintk ("%s : FE_SET_FRONTEND\n", __FUNCTION__);
547 if (p->inversion == INVERSION_OFF) invval = 0;
548 else if (p->inversion == INVERSION_ON) invval = 1;
550 printk("stv0299 does not support auto-inversion\n");
553 if (state->config->invert) invval = (~invval) & 1;
554 stv0299_writeregI(state, 0x0c, (stv0299_readreg(state, 0x0c) & 0xfe) | invval);
556 stv0299_writeregI(state, 0x05, 0xb5); /* enable i2c repeater on stv0299 */
557 state->config->pll_set(fe, state->i2c, p);
558 stv0299_writeregI(state, 0x05, 0x35); /* disable i2c repeater on stv0299 */
560 stv0299_set_FEC (state, p->u.qpsk.fec_inner);
561 stv0299_set_symbolrate (fe, p->u.qpsk.symbol_rate);
562 stv0299_writeregI(state, 0x22, 0x00);
563 stv0299_writeregI(state, 0x23, 0x00);
565 state->tuner_frequency = p->frequency;
566 state->fec_inner = p->u.qpsk.fec_inner;
567 state->symbol_rate = p->u.qpsk.symbol_rate;
572 static int stv0299_get_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters * p)
574 struct stv0299_state* state = fe->demodulator_priv;
578 derot_freq = (s32)(s16) ((stv0299_readreg (state, 0x22) << 8)
579 | stv0299_readreg (state, 0x23));
581 derot_freq *= (state->config->mclk >> 16);
585 p->frequency += derot_freq;
587 invval = stv0299_readreg (state, 0x0c) & 1;
588 if (state->config->invert) invval = (~invval) & 1;
589 p->inversion = invval ? INVERSION_ON : INVERSION_OFF;
591 p->u.qpsk.fec_inner = stv0299_get_fec (state);
592 p->u.qpsk.symbol_rate = stv0299_get_symbolrate (state);
597 static int stv0299_sleep(struct dvb_frontend* fe)
599 struct stv0299_state* state = fe->demodulator_priv;
601 stv0299_writeregI(state, 0x02, 0x80);
602 state->initialised = 0;
607 static int stv0299_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fesettings)
609 struct stv0299_state* state = fe->demodulator_priv;
611 fesettings->min_delay_ms = state->config->min_delay_ms;
612 if (fesettings->parameters.u.qpsk.symbol_rate < 10000000) {
613 fesettings->step_size = fesettings->parameters.u.qpsk.symbol_rate / 32000;
614 fesettings->max_drift = 5000;
616 fesettings->step_size = fesettings->parameters.u.qpsk.symbol_rate / 16000;
617 fesettings->max_drift = fesettings->parameters.u.qpsk.symbol_rate / 2000;
622 static void stv0299_release(struct dvb_frontend* fe)
624 struct stv0299_state* state = fe->demodulator_priv;
628 static struct dvb_frontend_ops stv0299_ops;
630 struct dvb_frontend* stv0299_attach(const struct stv0299_config* config,
631 struct i2c_adapter* i2c)
633 struct stv0299_state* state = NULL;
636 /* allocate memory for the internal state */
637 state = kmalloc(sizeof(struct stv0299_state), GFP_KERNEL);
638 if (state == NULL) goto error;
640 /* setup the state */
641 state->config = config;
643 memcpy(&state->ops, &stv0299_ops, sizeof(struct dvb_frontend_ops));
644 state->initialised = 0;
645 state->tuner_frequency = 0;
646 state->symbol_rate = 0;
647 state->fec_inner = 0;
648 state->errmode = STATUS_BER;
650 /* check if the demod is there */
651 stv0299_writeregI(state, 0x02, 0x34); /* standby off */
653 id = stv0299_readreg(state, 0x00);
655 /* register 0x00 contains 0xa1 for STV0299 and STV0299B */
656 /* register 0x00 might contain 0x80 when returning from standby */
657 if (id != 0xa1 && id != 0x80) goto error;
659 /* create dvb_frontend */
660 state->frontend.ops = &state->ops;
661 state->frontend.demodulator_priv = state;
662 return &state->frontend;
669 static struct dvb_frontend_ops stv0299_ops = {
672 .name = "ST STV0299 DVB-S",
674 .frequency_min = 950000,
675 .frequency_max = 2150000,
676 .frequency_stepsize = 125, /* kHz for QPSK frontends */
677 .frequency_tolerance = 0,
678 .symbol_rate_min = 1000000,
679 .symbol_rate_max = 45000000,
680 .symbol_rate_tolerance = 500, /* ppm */
681 .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
682 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 |
687 .release = stv0299_release,
689 .init = stv0299_init,
690 .sleep = stv0299_sleep,
692 .set_frontend = stv0299_set_frontend,
693 .get_frontend = stv0299_get_frontend,
694 .get_tune_settings = stv0299_get_tune_settings,
696 .read_status = stv0299_read_status,
697 .read_ber = stv0299_read_ber,
698 .read_signal_strength = stv0299_read_signal_strength,
699 .read_snr = stv0299_read_snr,
700 .read_ucblocks = stv0299_read_ucblocks,
702 .diseqc_send_master_cmd = stv0299_send_diseqc_msg,
703 .diseqc_send_burst = stv0299_send_diseqc_burst,
704 .set_tone = stv0299_set_tone,
705 .set_voltage = stv0299_set_voltage,
706 .dishnetwork_send_legacy_command = stv0299_send_legacy_dish_cmd,
709 module_param(debug_legacy_dish_switch, int, 0444);
710 MODULE_PARM_DESC(debug_legacy_dish_switch, "Enable timing analysis for Dish Network legacy switches");
712 module_param(debug, int, 0644);
713 MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
715 MODULE_DESCRIPTION("ST STV0299 DVB Demodulator driver");
716 MODULE_AUTHOR("Ralph Metzler, Holger Waechtler, Peter Schildmann, Felix Domke, "
717 "Andreas Oberritter, Andrew de Quincey, Kenneth Aafløy");
718 MODULE_LICENSE("GPL");
720 EXPORT_SYMBOL(stv0299_writereg);
721 EXPORT_SYMBOL(stv0299_attach);