290 lines
7.3 KiB
C
290 lines
7.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* TTUSB DEC Frontend Driver
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*
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* Copyright (C) 2003-2004 Alex Woods <linux-dvb@giblets.org>
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*/
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#include <media/dvb_frontend.h>
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#include "ttusbdecfe.h"
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#define LOF_HI 10600000
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#define LOF_LO 9750000
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struct ttusbdecfe_state {
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/* configuration settings */
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const struct ttusbdecfe_config* config;
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struct dvb_frontend frontend;
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u8 hi_band;
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u8 voltage;
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};
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static int ttusbdecfe_dvbs_read_status(struct dvb_frontend *fe,
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enum fe_status *status)
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{
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*status = FE_HAS_SIGNAL | FE_HAS_VITERBI |
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FE_HAS_SYNC | FE_HAS_CARRIER | FE_HAS_LOCK;
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return 0;
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}
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static int ttusbdecfe_dvbt_read_status(struct dvb_frontend *fe,
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enum fe_status *status)
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{
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struct ttusbdecfe_state* state = fe->demodulator_priv;
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u8 b[] = { 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00 };
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u8 result[4];
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int len, ret;
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*status=0;
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ret=state->config->send_command(fe, 0x73, sizeof(b), b, &len, result);
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if(ret)
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return ret;
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if(len != 4) {
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printk(KERN_ERR "%s: unexpected reply\n", __func__);
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return -EIO;
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}
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switch(result[3]) {
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case 1: /* not tuned yet */
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case 2: /* no signal/no lock*/
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break;
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case 3: /* signal found and locked*/
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*status = FE_HAS_SIGNAL | FE_HAS_VITERBI |
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FE_HAS_SYNC | FE_HAS_CARRIER | FE_HAS_LOCK;
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break;
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case 4:
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*status = FE_TIMEDOUT;
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break;
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default:
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pr_info("%s: returned unknown value: %d\n",
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__func__, result[3]);
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return -EIO;
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}
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return 0;
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}
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static int ttusbdecfe_dvbt_set_frontend(struct dvb_frontend *fe)
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{
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struct dtv_frontend_properties *p = &fe->dtv_property_cache;
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struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv;
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u8 b[] = { 0x00, 0x00, 0x00, 0x03,
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0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x01,
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0x00, 0x00, 0x00, 0xff,
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0x00, 0x00, 0x00, 0xff };
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__be32 freq = htonl(p->frequency / 1000);
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memcpy(&b[4], &freq, sizeof (u32));
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state->config->send_command(fe, 0x71, sizeof(b), b, NULL, NULL);
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return 0;
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}
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static int ttusbdecfe_dvbt_get_tune_settings(struct dvb_frontend* fe,
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struct dvb_frontend_tune_settings* fesettings)
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{
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fesettings->min_delay_ms = 1500;
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/* Drift compensation makes no sense for DVB-T */
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fesettings->step_size = 0;
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fesettings->max_drift = 0;
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return 0;
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}
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static int ttusbdecfe_dvbs_set_frontend(struct dvb_frontend *fe)
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{
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struct dtv_frontend_properties *p = &fe->dtv_property_cache;
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struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv;
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u8 b[] = { 0x00, 0x00, 0x00, 0x01,
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0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x01,
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0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00 };
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__be32 freq;
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__be32 sym_rate;
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__be32 band;
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__be32 lnb_voltage;
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freq = htonl(p->frequency +
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(state->hi_band ? LOF_HI : LOF_LO));
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memcpy(&b[4], &freq, sizeof(u32));
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sym_rate = htonl(p->symbol_rate);
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memcpy(&b[12], &sym_rate, sizeof(u32));
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band = htonl(state->hi_band ? LOF_HI : LOF_LO);
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memcpy(&b[24], &band, sizeof(u32));
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lnb_voltage = htonl(state->voltage);
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memcpy(&b[28], &lnb_voltage, sizeof(u32));
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state->config->send_command(fe, 0x71, sizeof(b), b, NULL, NULL);
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return 0;
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}
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static int ttusbdecfe_dvbs_diseqc_send_master_cmd(struct dvb_frontend* fe, struct dvb_diseqc_master_cmd *cmd)
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{
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struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv;
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u8 b[] = { 0x00, 0xff, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00,
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0x00, 0x00 };
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if (cmd->msg_len > sizeof(b) - 4)
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return -EINVAL;
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memcpy(&b[4], cmd->msg, cmd->msg_len);
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state->config->send_command(fe, 0x72,
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sizeof(b) - (6 - cmd->msg_len), b,
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NULL, NULL);
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return 0;
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}
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static int ttusbdecfe_dvbs_set_tone(struct dvb_frontend *fe,
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enum fe_sec_tone_mode tone)
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{
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struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv;
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state->hi_band = (SEC_TONE_ON == tone);
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return 0;
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}
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static int ttusbdecfe_dvbs_set_voltage(struct dvb_frontend *fe,
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enum fe_sec_voltage voltage)
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{
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struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv;
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switch (voltage) {
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case SEC_VOLTAGE_13:
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state->voltage = 13;
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break;
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case SEC_VOLTAGE_18:
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state->voltage = 18;
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static void ttusbdecfe_release(struct dvb_frontend* fe)
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{
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struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv;
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kfree(state);
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}
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static const struct dvb_frontend_ops ttusbdecfe_dvbt_ops;
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struct dvb_frontend* ttusbdecfe_dvbt_attach(const struct ttusbdecfe_config* config)
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{
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struct ttusbdecfe_state* state = NULL;
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/* allocate memory for the internal state */
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state = kmalloc(sizeof(struct ttusbdecfe_state), GFP_KERNEL);
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if (state == NULL)
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return NULL;
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/* setup the state */
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state->config = config;
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/* create dvb_frontend */
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memcpy(&state->frontend.ops, &ttusbdecfe_dvbt_ops, sizeof(struct dvb_frontend_ops));
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state->frontend.demodulator_priv = state;
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return &state->frontend;
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}
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static const struct dvb_frontend_ops ttusbdecfe_dvbs_ops;
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struct dvb_frontend* ttusbdecfe_dvbs_attach(const struct ttusbdecfe_config* config)
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{
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struct ttusbdecfe_state* state = NULL;
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/* allocate memory for the internal state */
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state = kmalloc(sizeof(struct ttusbdecfe_state), GFP_KERNEL);
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if (state == NULL)
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return NULL;
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/* setup the state */
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state->config = config;
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state->voltage = 0;
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state->hi_band = 0;
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/* create dvb_frontend */
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memcpy(&state->frontend.ops, &ttusbdecfe_dvbs_ops, sizeof(struct dvb_frontend_ops));
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state->frontend.demodulator_priv = state;
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return &state->frontend;
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}
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static const struct dvb_frontend_ops ttusbdecfe_dvbt_ops = {
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.delsys = { SYS_DVBT },
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.info = {
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.name = "TechnoTrend/Hauppauge DEC2000-t Frontend",
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.frequency_min_hz = 51 * MHz,
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.frequency_max_hz = 858 * MHz,
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.frequency_stepsize_hz = 62500,
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.caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
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FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
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FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
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FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO |
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FE_CAN_HIERARCHY_AUTO,
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},
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.release = ttusbdecfe_release,
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.set_frontend = ttusbdecfe_dvbt_set_frontend,
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.get_tune_settings = ttusbdecfe_dvbt_get_tune_settings,
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.read_status = ttusbdecfe_dvbt_read_status,
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};
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static const struct dvb_frontend_ops ttusbdecfe_dvbs_ops = {
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.delsys = { SYS_DVBS },
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.info = {
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.name = "TechnoTrend/Hauppauge DEC3000-s Frontend",
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.frequency_min_hz = 950 * MHz,
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.frequency_max_hz = 2150 * MHz,
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.frequency_stepsize_hz = 125 * kHz,
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.symbol_rate_min = 1000000, /* guessed */
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.symbol_rate_max = 45000000, /* guessed */
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.caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
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FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
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FE_CAN_QPSK
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},
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.release = ttusbdecfe_release,
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.set_frontend = ttusbdecfe_dvbs_set_frontend,
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.read_status = ttusbdecfe_dvbs_read_status,
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.diseqc_send_master_cmd = ttusbdecfe_dvbs_diseqc_send_master_cmd,
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.set_voltage = ttusbdecfe_dvbs_set_voltage,
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.set_tone = ttusbdecfe_dvbs_set_tone,
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};
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MODULE_DESCRIPTION("TTUSB DEC DVB-T/S Demodulator driver");
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MODULE_AUTHOR("Alex Woods/Andrew de Quincey");
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MODULE_LICENSE("GPL");
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EXPORT_SYMBOL(ttusbdecfe_dvbt_attach);
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EXPORT_SYMBOL(ttusbdecfe_dvbs_attach);
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