summaryrefslogtreecommitdiffstats
path: root/drivers/media/dvb/frontends/mt352.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/dvb/frontends/mt352.c')
-rw-r--r--drivers/media/dvb/frontends/mt352.c610
1 files changed, 0 insertions, 610 deletions
diff --git a/drivers/media/dvb/frontends/mt352.c b/drivers/media/dvb/frontends/mt352.c
deleted file mode 100644
index 2c3b50e828d7..000000000000
--- a/drivers/media/dvb/frontends/mt352.c
+++ /dev/null
@@ -1,610 +0,0 @@
-/*
- * Driver for Zarlink DVB-T MT352 demodulator
- *
- * Written by Holger Waechtler <holger@qanu.de>
- * and Daniel Mack <daniel@qanu.de>
- *
- * AVerMedia AVerTV DVB-T 771 support by
- * Wolfram Joost <dbox2@frokaschwei.de>
- *
- * Support for Samsung TDTC9251DH01C(M) tuner
- * Copyright (C) 2004 Antonio Mancuso <antonio.mancuso@digitaltelevision.it>
- * Amauri Celani <acelani@essegi.net>
- *
- * DVICO FusionHDTV DVB-T1 and DVICO FusionHDTV DVB-T Lite support by
- * Christopher Pascoe <c.pascoe@itee.uq.edu.au>
- *
- * 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/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-
-#include "dvb_frontend.h"
-#include "mt352_priv.h"
-#include "mt352.h"
-
-struct mt352_state {
- struct i2c_adapter* i2c;
- struct dvb_frontend frontend;
-
- /* configuration settings */
- struct mt352_config config;
-};
-
-static int debug;
-#define dprintk(args...) \
- do { \
- if (debug) printk(KERN_DEBUG "mt352: " args); \
- } while (0)
-
-static int mt352_single_write(struct dvb_frontend *fe, u8 reg, u8 val)
-{
- struct mt352_state* state = fe->demodulator_priv;
- u8 buf[2] = { reg, val };
- struct i2c_msg msg = { .addr = state->config.demod_address, .flags = 0,
- .buf = buf, .len = 2 };
- int err = i2c_transfer(state->i2c, &msg, 1);
- if (err != 1) {
- printk("mt352_write() to reg %x failed (err = %d)!\n", reg, err);
- return err;
- }
- return 0;
-}
-
-static int _mt352_write(struct dvb_frontend* fe, const u8 ibuf[], int ilen)
-{
- int err,i;
- for (i=0; i < ilen-1; i++)
- if ((err = mt352_single_write(fe,ibuf[0]+i,ibuf[i+1])))
- return err;
-
- return 0;
-}
-
-static int mt352_read_register(struct mt352_state* state, u8 reg)
-{
- int ret;
- 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 } };
-
- ret = i2c_transfer(state->i2c, msg, 2);
-
- if (ret != 2) {
- printk("%s: readreg error (reg=%d, ret==%i)\n",
- __func__, reg, ret);
- return ret;
- }
-
- return b1[0];
-}
-
-static int mt352_sleep(struct dvb_frontend* fe)
-{
- static u8 mt352_softdown[] = { CLOCK_CTL, 0x20, 0x08 };
-
- _mt352_write(fe, mt352_softdown, sizeof(mt352_softdown));
- return 0;
-}
-
-static void mt352_calc_nominal_rate(struct mt352_state* state,
- u32 bandwidth,
- unsigned char *buf)
-{
- u32 adc_clock = 20480; /* 20.340 MHz */
- u32 bw,value;
-
- switch (bandwidth) {
- case 6000000:
- bw = 6;
- break;
- case 7000000:
- bw = 7;
- break;
- case 8000000:
- default:
- bw = 8;
- break;
- }
- if (state->config.adc_clock)
- adc_clock = state->config.adc_clock;
-
- value = 64 * bw * (1<<16) / (7 * 8);
- value = value * 1000 / adc_clock;
- dprintk("%s: bw %d, adc_clock %d => 0x%x\n",
- __func__, bw, adc_clock, value);
- buf[0] = msb(value);
- buf[1] = lsb(value);
-}
-
-static void mt352_calc_input_freq(struct mt352_state* state,
- unsigned char *buf)
-{
- int adc_clock = 20480; /* 20.480000 MHz */
- int if2 = 36167; /* 36.166667 MHz */
- int ife,value;
-
- if (state->config.adc_clock)
- adc_clock = state->config.adc_clock;
- if (state->config.if2)
- if2 = state->config.if2;
-
- if (adc_clock >= if2 * 2)
- ife = if2;
- else {
- ife = adc_clock - (if2 % adc_clock);
- if (ife > adc_clock / 2)
- ife = adc_clock - ife;
- }
- value = -16374 * ife / adc_clock;
- dprintk("%s: if2 %d, ife %d, adc_clock %d => %d / 0x%x\n",
- __func__, if2, ife, adc_clock, value, value & 0x3fff);
- buf[0] = msb(value);
- buf[1] = lsb(value);
-}
-
-static int mt352_set_parameters(struct dvb_frontend *fe)
-{
- struct dtv_frontend_properties *op = &fe->dtv_property_cache;
- struct mt352_state* state = fe->demodulator_priv;
- unsigned char buf[13];
- static unsigned char tuner_go[] = { 0x5d, 0x01 };
- static unsigned char fsm_go[] = { 0x5e, 0x01 };
- unsigned int tps = 0;
-
- switch (op->code_rate_HP) {
- case FEC_2_3:
- tps |= (1 << 7);
- break;
- case FEC_3_4:
- tps |= (2 << 7);
- break;
- case FEC_5_6:
- tps |= (3 << 7);
- break;
- case FEC_7_8:
- tps |= (4 << 7);
- break;
- case FEC_1_2:
- case FEC_AUTO:
- break;
- default:
- return -EINVAL;
- }
-
- switch (op->code_rate_LP) {
- case FEC_2_3:
- tps |= (1 << 4);
- break;
- case FEC_3_4:
- tps |= (2 << 4);
- break;
- case FEC_5_6:
- tps |= (3 << 4);
- break;
- case FEC_7_8:
- tps |= (4 << 4);
- break;
- case FEC_1_2:
- case FEC_AUTO:
- break;
- case FEC_NONE:
- if (op->hierarchy == HIERARCHY_AUTO ||
- op->hierarchy == HIERARCHY_NONE)
- break;
- default:
- return -EINVAL;
- }
-
- switch (op->modulation) {
- case QPSK:
- break;
- case QAM_AUTO:
- case QAM_16:
- tps |= (1 << 13);
- break;
- case QAM_64:
- tps |= (2 << 13);
- break;
- default:
- return -EINVAL;
- }
-
- switch (op->transmission_mode) {
- case TRANSMISSION_MODE_2K:
- case TRANSMISSION_MODE_AUTO:
- break;
- case TRANSMISSION_MODE_8K:
- tps |= (1 << 0);
- break;
- default:
- return -EINVAL;
- }
-
- switch (op->guard_interval) {
- case GUARD_INTERVAL_1_32:
- case GUARD_INTERVAL_AUTO:
- break;
- case GUARD_INTERVAL_1_16:
- tps |= (1 << 2);
- break;
- case GUARD_INTERVAL_1_8:
- tps |= (2 << 2);
- break;
- case GUARD_INTERVAL_1_4:
- tps |= (3 << 2);
- break;
- default:
- return -EINVAL;
- }
-
- switch (op->hierarchy) {
- case HIERARCHY_AUTO:
- case HIERARCHY_NONE:
- break;
- case HIERARCHY_1:
- tps |= (1 << 10);
- break;
- case HIERARCHY_2:
- tps |= (2 << 10);
- break;
- case HIERARCHY_4:
- tps |= (3 << 10);
- break;
- default:
- return -EINVAL;
- }
-
-
- buf[0] = TPS_GIVEN_1; /* TPS_GIVEN_1 and following registers */
-
- buf[1] = msb(tps); /* TPS_GIVEN_(1|0) */
- buf[2] = lsb(tps);
-
- buf[3] = 0x50; // old
-// buf[3] = 0xf4; // pinnacle
-
- mt352_calc_nominal_rate(state, op->bandwidth_hz, buf+4);
- mt352_calc_input_freq(state, buf+6);
-
- if (state->config.no_tuner) {
- 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);
- }
-
- _mt352_write(fe, buf, 8);
- _mt352_write(fe, fsm_go, 2);
- } else {
- if (fe->ops.tuner_ops.calc_regs) {
- fe->ops.tuner_ops.calc_regs(fe, buf+8, 5);
- buf[8] <<= 1;
- _mt352_write(fe, buf, sizeof(buf));
- _mt352_write(fe, tuner_go, 2);
- }
- }
-
- return 0;
-}
-
-static int mt352_get_parameters(struct dvb_frontend* fe)
-{
- struct dtv_frontend_properties *op = &fe->dtv_property_cache;
- struct mt352_state* state = fe->demodulator_priv;
- u16 tps;
- u16 div;
- u8 trl;
- static const u8 tps_fec_to_api[8] =
- {
- FEC_1_2,
- FEC_2_3,
- FEC_3_4,
- FEC_5_6,
- FEC_7_8,
- FEC_AUTO,
- FEC_AUTO,
- FEC_AUTO
- };
-
- if ( (mt352_read_register(state,0x00) & 0xC0) != 0xC0 )
- return -EINVAL;
-
- /* Use TPS_RECEIVED-registers, not the TPS_CURRENT-registers because
- * the mt352 sometimes works with the wrong parameters
- */
- tps = (mt352_read_register(state, TPS_RECEIVED_1) << 8) | mt352_read_register(state, TPS_RECEIVED_0);
- div = (mt352_read_register(state, CHAN_START_1) << 8) | mt352_read_register(state, CHAN_START_0);
- trl = mt352_read_register(state, TRL_NOMINAL_RATE_1);
-
- op->code_rate_HP = tps_fec_to_api[(tps >> 7) & 7];
- op->code_rate_LP = tps_fec_to_api[(tps >> 4) & 7];
-
- switch ( (tps >> 13) & 3)
- {
- case 0:
- op->modulation = QPSK;
- break;
- case 1:
- op->modulation = QAM_16;
- break;
- case 2:
- op->modulation = QAM_64;
- break;
- default:
- op->modulation = QAM_AUTO;
- break;
- }
-
- op->transmission_mode = (tps & 0x01) ? TRANSMISSION_MODE_8K : TRANSMISSION_MODE_2K;
-
- switch ( (tps >> 2) & 3)
- {
- case 0:
- op->guard_interval = GUARD_INTERVAL_1_32;
- break;
- case 1:
- op->guard_interval = GUARD_INTERVAL_1_16;
- break;
- case 2:
- op->guard_interval = GUARD_INTERVAL_1_8;
- break;
- case 3:
- op->guard_interval = GUARD_INTERVAL_1_4;
- break;
- default:
- op->guard_interval = GUARD_INTERVAL_AUTO;
- break;
- }
-
- switch ( (tps >> 10) & 7)
- {
- case 0:
- op->hierarchy = HIERARCHY_NONE;
- break;
- case 1:
- op->hierarchy = HIERARCHY_1;
- break;
- case 2:
- op->hierarchy = HIERARCHY_2;
- break;
- case 3:
- op->hierarchy = HIERARCHY_4;
- break;
- default:
- op->hierarchy = HIERARCHY_AUTO;
- break;
- }
-
- op->frequency = (500 * (div - IF_FREQUENCYx6)) / 3 * 1000;
-
- if (trl == 0x72)
- op->bandwidth_hz = 8000000;
- else if (trl == 0x64)
- op->bandwidth_hz = 7000000;
- else
- op->bandwidth_hz = 6000000;
-
-
- if (mt352_read_register(state, STATUS_2) & 0x02)
- op->inversion = INVERSION_OFF;
- else
- op->inversion = INVERSION_ON;
-
- return 0;
-}
-
-static int mt352_read_status(struct dvb_frontend* fe, fe_status_t* status)
-{
- struct mt352_state* state = fe->demodulator_priv;
- int s0, s1, s3;
-
- /* FIXME:
- *
- * The MT352 design manual from Zarlink states (page 46-47):
- *
- * Notes about the TUNER_GO register:
- *
- * If the Read_Tuner_Byte (bit-1) is activated, then the tuner status
- * byte is copied from the tuner to the STATUS_3 register and
- * completion of the read operation is indicated by bit-5 of the
- * INTERRUPT_3 register.
- */
-
- if ((s0 = mt352_read_register(state, STATUS_0)) < 0)
- return -EREMOTEIO;
- if ((s1 = mt352_read_register(state, STATUS_1)) < 0)
- return -EREMOTEIO;
- if ((s3 = mt352_read_register(state, STATUS_3)) < 0)
- return -EREMOTEIO;
-
- *status = 0;
- if (s0 & (1 << 4))
- *status |= FE_HAS_CARRIER;
- if (s0 & (1 << 1))
- *status |= FE_HAS_VITERBI;
- if (s0 & (1 << 5))
- *status |= FE_HAS_LOCK;
- if (s1 & (1 << 1))
- *status |= FE_HAS_SYNC;
- if (s3 & (1 << 6))
- *status |= FE_HAS_SIGNAL;
-
- if ((*status & (FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC)) !=
- (FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC))
- *status &= ~FE_HAS_LOCK;
-
- return 0;
-}
-
-static int mt352_read_ber(struct dvb_frontend* fe, u32* ber)
-{
- struct mt352_state* state = fe->demodulator_priv;
-
- *ber = (mt352_read_register (state, RS_ERR_CNT_2) << 16) |
- (mt352_read_register (state, RS_ERR_CNT_1) << 8) |
- (mt352_read_register (state, RS_ERR_CNT_0));
-
- return 0;
-}
-
-static int mt352_read_signal_strength(struct dvb_frontend* fe, u16* strength)
-{
- struct mt352_state* state = fe->demodulator_priv;
-
- /* align the 12 bit AGC gain with the most significant bits */
- u16 signal = ((mt352_read_register(state, AGC_GAIN_1) & 0x0f) << 12) |
- (mt352_read_register(state, AGC_GAIN_0) << 4);
-
- /* inverse of gain is signal strength */
- *strength = ~signal;
- return 0;
-}
-
-static int mt352_read_snr(struct dvb_frontend* fe, u16* snr)
-{
- struct mt352_state* state = fe->demodulator_priv;
-
- u8 _snr = mt352_read_register (state, SNR);
- *snr = (_snr << 8) | _snr;
-
- return 0;
-}
-
-static int mt352_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
-{
- struct mt352_state* state = fe->demodulator_priv;
-
- *ucblocks = (mt352_read_register (state, RS_UBC_1) << 8) |
- (mt352_read_register (state, RS_UBC_0));
-
- return 0;
-}
-
-static int mt352_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fe_tune_settings)
-{
- fe_tune_settings->min_delay_ms = 800;
- fe_tune_settings->step_size = 0;
- fe_tune_settings->max_drift = 0;
-
- return 0;
-}
-
-static int mt352_init(struct dvb_frontend* fe)
-{
- struct mt352_state* state = fe->demodulator_priv;
-
- static u8 mt352_reset_attach [] = { RESET, 0xC0 };
-
- dprintk("%s: hello\n",__func__);
-
- if ((mt352_read_register(state, CLOCK_CTL) & 0x10) == 0 ||
- (mt352_read_register(state, CONFIG) & 0x20) == 0) {
-
- /* Do a "hard" reset */
- _mt352_write(fe, mt352_reset_attach, sizeof(mt352_reset_attach));
- return state->config.demod_init(fe);
- }
-
- return 0;
-}
-
-static void mt352_release(struct dvb_frontend* fe)
-{
- struct mt352_state* state = fe->demodulator_priv;
- kfree(state);
-}
-
-static struct dvb_frontend_ops mt352_ops;
-
-struct dvb_frontend* mt352_attach(const struct mt352_config* config,
- struct i2c_adapter* i2c)
-{
- struct mt352_state* state = NULL;
-
- /* allocate memory for the internal state */
- state = kzalloc(sizeof(struct mt352_state), GFP_KERNEL);
- if (state == NULL) goto error;
-
- /* setup the state */
- state->i2c = i2c;
- memcpy(&state->config,config,sizeof(struct mt352_config));
-
- /* check if the demod is there */
- if (mt352_read_register(state, CHIP_ID) != ID_MT352) goto error;
-
- /* create dvb_frontend */
- memcpy(&state->frontend.ops, &mt352_ops, sizeof(struct dvb_frontend_ops));
- state->frontend.demodulator_priv = state;
- return &state->frontend;
-
-error:
- kfree(state);
- return NULL;
-}
-
-static struct dvb_frontend_ops mt352_ops = {
- .delsys = { SYS_DVBT },
- .info = {
- .name = "Zarlink MT352 DVB-T",
- .frequency_min = 174000000,
- .frequency_max = 862000000,
- .frequency_stepsize = 166667,
- .frequency_tolerance = 0,
- .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 |
- FE_CAN_FEC_3_4 | FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 |
- FE_CAN_FEC_AUTO |
- FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
- FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO |
- FE_CAN_HIERARCHY_AUTO | FE_CAN_RECOVER |
- FE_CAN_MUTE_TS
- },
-
- .release = mt352_release,
-
- .init = mt352_init,
- .sleep = mt352_sleep,
- .write = _mt352_write,
-
- .set_frontend = mt352_set_parameters,
- .get_frontend = mt352_get_parameters,
- .get_tune_settings = mt352_get_tune_settings,
-
- .read_status = mt352_read_status,
- .read_ber = mt352_read_ber,
- .read_signal_strength = mt352_read_signal_strength,
- .read_snr = mt352_read_snr,
- .read_ucblocks = mt352_read_ucblocks,
-};
-
-module_param(debug, int, 0644);
-MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
-
-MODULE_DESCRIPTION("Zarlink MT352 DVB-T Demodulator driver");
-MODULE_AUTHOR("Holger Waechtler, Daniel Mack, Antonio Mancuso");
-MODULE_LICENSE("GPL");
-
-EXPORT_SYMBOL(mt352_attach);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-20 18:18:21 +0100