diff options
Diffstat (limited to 'drivers/media/usb/ttusb-dec/ttusbdecfe.c')
| -rw-r--r-- | drivers/media/usb/ttusb-dec/ttusbdecfe.c | 289 |
1 files changed, 289 insertions, 0 deletions
diff --git a/drivers/media/usb/ttusb-dec/ttusbdecfe.c b/drivers/media/usb/ttusb-dec/ttusbdecfe.c new file mode 100644 index 0000000000..dff6bf532c --- /dev/null +++ b/drivers/media/usb/ttusb-dec/ttusbdecfe.c @@ -0,0 +1,289 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * TTUSB DEC Frontend Driver + * + * Copyright (C) 2003-2004 Alex Woods <linux-dvb@giblets.org> + */ + +#include <media/dvb_frontend.h> +#include "ttusbdecfe.h" + + +#define LOF_HI 10600000 +#define LOF_LO 9750000 + +struct ttusbdecfe_state { + + /* configuration settings */ + const struct ttusbdecfe_config* config; + + struct dvb_frontend frontend; + + u8 hi_band; + u8 voltage; +}; + + +static int ttusbdecfe_dvbs_read_status(struct dvb_frontend *fe, + enum fe_status *status) +{ + *status = FE_HAS_SIGNAL | FE_HAS_VITERBI | + FE_HAS_SYNC | FE_HAS_CARRIER | FE_HAS_LOCK; + return 0; +} + + +static int ttusbdecfe_dvbt_read_status(struct dvb_frontend *fe, + enum fe_status *status) +{ + struct ttusbdecfe_state* state = fe->demodulator_priv; + u8 b[] = { 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00 }; + u8 result[4]; + int len, ret; + + *status=0; + + ret=state->config->send_command(fe, 0x73, sizeof(b), b, &len, result); + if(ret) + return ret; + + if(len != 4) { + printk(KERN_ERR "%s: unexpected reply\n", __func__); + return -EIO; + } + + switch(result[3]) { + case 1: /* not tuned yet */ + case 2: /* no signal/no lock*/ + break; + case 3: /* signal found and locked*/ + *status = FE_HAS_SIGNAL | FE_HAS_VITERBI | + FE_HAS_SYNC | FE_HAS_CARRIER | FE_HAS_LOCK; + break; + case 4: + *status = FE_TIMEDOUT; + break; + default: + pr_info("%s: returned unknown value: %d\n", + __func__, result[3]); + return -EIO; + } + + return 0; +} + +static int ttusbdecfe_dvbt_set_frontend(struct dvb_frontend *fe) +{ + struct dtv_frontend_properties *p = &fe->dtv_property_cache; + struct ttusbdecfe_state *state = fe->demodulator_priv; + u8 b[] = { 0x00, 0x00, 0x00, 0x03, + 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x01, + 0x00, 0x00, 0x00, 0xff, + 0x00, 0x00, 0x00, 0xff }; + + __be32 freq = htonl(p->frequency / 1000); + memcpy(&b[4], &freq, sizeof (u32)); + state->config->send_command(fe, 0x71, sizeof(b), b, NULL, NULL); + + return 0; +} + +static int ttusbdecfe_dvbt_get_tune_settings(struct dvb_frontend* fe, + struct dvb_frontend_tune_settings* fesettings) +{ + fesettings->min_delay_ms = 1500; + /* Drift compensation makes no sense for DVB-T */ + fesettings->step_size = 0; + fesettings->max_drift = 0; + return 0; +} + +static int ttusbdecfe_dvbs_set_frontend(struct dvb_frontend *fe) +{ + struct dtv_frontend_properties *p = &fe->dtv_property_cache; + struct ttusbdecfe_state *state = fe->demodulator_priv; + + u8 b[] = { 0x00, 0x00, 0x00, 0x01, + 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x01, + 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00 }; + __be32 freq; + __be32 sym_rate; + __be32 band; + __be32 lnb_voltage; + + freq = htonl(p->frequency + + (state->hi_band ? LOF_HI : LOF_LO)); + memcpy(&b[4], &freq, sizeof(u32)); + sym_rate = htonl(p->symbol_rate); + memcpy(&b[12], &sym_rate, sizeof(u32)); + band = htonl(state->hi_band ? LOF_HI : LOF_LO); + memcpy(&b[24], &band, sizeof(u32)); + lnb_voltage = htonl(state->voltage); + memcpy(&b[28], &lnb_voltage, sizeof(u32)); + + state->config->send_command(fe, 0x71, sizeof(b), b, NULL, NULL); + + return 0; +} + +static int ttusbdecfe_dvbs_diseqc_send_master_cmd(struct dvb_frontend* fe, struct dvb_diseqc_master_cmd *cmd) +{ + struct ttusbdecfe_state *state = fe->demodulator_priv; + u8 b[] = { 0x00, 0xff, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00 }; + + if (cmd->msg_len > sizeof(b) - 4) + return -EINVAL; + + memcpy(&b[4], cmd->msg, cmd->msg_len); + + state->config->send_command(fe, 0x72, + sizeof(b) - (6 - cmd->msg_len), b, + NULL, NULL); + + return 0; +} + + +static int ttusbdecfe_dvbs_set_tone(struct dvb_frontend *fe, + enum fe_sec_tone_mode tone) +{ + struct ttusbdecfe_state *state = fe->demodulator_priv; + + state->hi_band = (SEC_TONE_ON == tone); + + return 0; +} + + +static int ttusbdecfe_dvbs_set_voltage(struct dvb_frontend *fe, + enum fe_sec_voltage voltage) +{ + struct ttusbdecfe_state *state = fe->demodulator_priv; + + switch (voltage) { + case SEC_VOLTAGE_13: + state->voltage = 13; + break; + case SEC_VOLTAGE_18: + state->voltage = 18; + break; + default: + return -EINVAL; + } + + return 0; +} + +static void ttusbdecfe_release(struct dvb_frontend* fe) +{ + struct ttusbdecfe_state *state = fe->demodulator_priv; + kfree(state); +} + +static const struct dvb_frontend_ops ttusbdecfe_dvbt_ops; + +struct dvb_frontend* ttusbdecfe_dvbt_attach(const struct ttusbdecfe_config* config) +{ + struct ttusbdecfe_state* state = NULL; + + /* allocate memory for the internal state */ + state = kmalloc(sizeof(struct ttusbdecfe_state), GFP_KERNEL); + if (state == NULL) + return NULL; + + /* setup the state */ + state->config = config; + + /* create dvb_frontend */ + memcpy(&state->frontend.ops, &ttusbdecfe_dvbt_ops, sizeof(struct dvb_frontend_ops)); + state->frontend.demodulator_priv = state; + return &state->frontend; +} + +static const struct dvb_frontend_ops ttusbdecfe_dvbs_ops; + +struct dvb_frontend* ttusbdecfe_dvbs_attach(const struct ttusbdecfe_config* config) +{ + struct ttusbdecfe_state* state = NULL; + + /* allocate memory for the internal state */ + state = kmalloc(sizeof(struct ttusbdecfe_state), GFP_KERNEL); + if (state == NULL) + return NULL; + + /* setup the state */ + state->config = config; + state->voltage = 0; + state->hi_band = 0; + + /* create dvb_frontend */ + memcpy(&state->frontend.ops, &ttusbdecfe_dvbs_ops, sizeof(struct dvb_frontend_ops)); + state->frontend.demodulator_priv = state; + return &state->frontend; +} + +static const struct dvb_frontend_ops ttusbdecfe_dvbt_ops = { + .delsys = { SYS_DVBT }, + .info = { + .name = "TechnoTrend/Hauppauge DEC2000-t Frontend", + .frequency_min_hz = 51 * MHz, + .frequency_max_hz = 858 * MHz, + .frequency_stepsize_hz = 62500, + .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_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO | + FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO | + FE_CAN_HIERARCHY_AUTO, + }, + + .release = ttusbdecfe_release, + + .set_frontend = ttusbdecfe_dvbt_set_frontend, + + .get_tune_settings = ttusbdecfe_dvbt_get_tune_settings, + + .read_status = ttusbdecfe_dvbt_read_status, +}; + +static const struct dvb_frontend_ops ttusbdecfe_dvbs_ops = { + .delsys = { SYS_DVBS }, + .info = { + .name = "TechnoTrend/Hauppauge DEC3000-s Frontend", + .frequency_min_hz = 950 * MHz, + .frequency_max_hz = 2150 * MHz, + .frequency_stepsize_hz = 125 * kHz, + .symbol_rate_min = 1000000, /* guessed */ + .symbol_rate_max = 45000000, /* guessed */ + .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 + }, + + .release = ttusbdecfe_release, + + .set_frontend = ttusbdecfe_dvbs_set_frontend, + + .read_status = ttusbdecfe_dvbs_read_status, + + .diseqc_send_master_cmd = ttusbdecfe_dvbs_diseqc_send_master_cmd, + .set_voltage = ttusbdecfe_dvbs_set_voltage, + .set_tone = ttusbdecfe_dvbs_set_tone, +}; + +MODULE_DESCRIPTION("TTUSB DEC DVB-T/S Demodulator driver"); +MODULE_AUTHOR("Alex Woods/Andrew de Quincey"); +MODULE_LICENSE("GPL"); + +EXPORT_SYMBOL(ttusbdecfe_dvbt_attach); +EXPORT_SYMBOL(ttusbdecfe_dvbs_attach); |