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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/media/dvb-frontends/gp8psk-fe.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/media/dvb-frontends/gp8psk-fe.c')
-rw-r--r-- | drivers/media/dvb-frontends/gp8psk-fe.c | 397 |
1 files changed, 397 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/gp8psk-fe.c b/drivers/media/dvb-frontends/gp8psk-fe.c new file mode 100644 index 000000000..ed671e951 --- /dev/null +++ b/drivers/media/dvb-frontends/gp8psk-fe.c @@ -0,0 +1,397 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Frontend driver for the GENPIX 8pks/qpsk/DCII USB2.0 DVB-S module + * + * Copyright (C) 2006,2007 Alan Nisota (alannisota@gmail.com) + * Copyright (C) 2006,2007 Genpix Electronics (genpix@genpix-electronics.com) + * + * Thanks to GENPIX for the sample code used to implement this module. + * + * This module is based off the vp7045 and vp702x modules + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include "gp8psk-fe.h" +#include <media/dvb_frontend.h> + +static int debug; +module_param(debug, int, 0644); +MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off)."); + +#define dprintk(fmt, arg...) do { \ + if (debug) \ + printk(KERN_DEBUG pr_fmt("%s: " fmt), \ + __func__, ##arg); \ +} while (0) + +struct gp8psk_fe_state { + struct dvb_frontend fe; + void *priv; + const struct gp8psk_fe_ops *ops; + bool is_rev1; + u8 lock; + u16 snr; + unsigned long next_status_check; + unsigned long status_check_interval; +}; + +static int gp8psk_tuned_to_DCII(struct dvb_frontend *fe) +{ + struct gp8psk_fe_state *st = fe->demodulator_priv; + u8 status; + + st->ops->in(st->priv, GET_8PSK_CONFIG, 0, 0, &status, 1); + return status & bmDCtuned; +} + +static int gp8psk_set_tuner_mode(struct dvb_frontend *fe, int mode) +{ + struct gp8psk_fe_state *st = fe->demodulator_priv; + + return st->ops->out(st->priv, SET_8PSK_CONFIG, mode, 0, NULL, 0); +} + +static int gp8psk_fe_update_status(struct gp8psk_fe_state *st) +{ + u8 buf[6]; + if (time_after(jiffies,st->next_status_check)) { + st->ops->in(st->priv, GET_SIGNAL_LOCK, 0, 0, &st->lock, 1); + st->ops->in(st->priv, GET_SIGNAL_STRENGTH, 0, 0, buf, 6); + st->snr = (buf[1]) << 8 | buf[0]; + st->next_status_check = jiffies + (st->status_check_interval*HZ)/1000; + } + return 0; +} + +static int gp8psk_fe_read_status(struct dvb_frontend *fe, + enum fe_status *status) +{ + struct gp8psk_fe_state *st = fe->demodulator_priv; + gp8psk_fe_update_status(st); + + if (st->lock) + *status = FE_HAS_LOCK | FE_HAS_SYNC | FE_HAS_VITERBI | FE_HAS_SIGNAL | FE_HAS_CARRIER; + else + *status = 0; + + if (*status & FE_HAS_LOCK) + st->status_check_interval = 1000; + else + st->status_check_interval = 100; + return 0; +} + +/* not supported by this Frontend */ +static int gp8psk_fe_read_ber(struct dvb_frontend* fe, u32 *ber) +{ + (void) fe; + *ber = 0; + return 0; +} + +/* not supported by this Frontend */ +static int gp8psk_fe_read_unc_blocks(struct dvb_frontend* fe, u32 *unc) +{ + (void) fe; + *unc = 0; + return 0; +} + +static int gp8psk_fe_read_snr(struct dvb_frontend* fe, u16 *snr) +{ + struct gp8psk_fe_state *st = fe->demodulator_priv; + gp8psk_fe_update_status(st); + /* snr is reported in dBu*256 */ + *snr = st->snr; + return 0; +} + +static int gp8psk_fe_read_signal_strength(struct dvb_frontend* fe, u16 *strength) +{ + struct gp8psk_fe_state *st = fe->demodulator_priv; + gp8psk_fe_update_status(st); + /* snr is reported in dBu*256 */ + /* snr / 38.4 ~= 100% strength */ + /* snr * 17 returns 100% strength as 65535 */ + if (st->snr > 0xf00) + *strength = 0xffff; + else + *strength = (st->snr << 4) + st->snr; /* snr*17 */ + return 0; +} + +static int gp8psk_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune) +{ + tune->min_delay_ms = 800; + return 0; +} + +static int gp8psk_fe_set_frontend(struct dvb_frontend *fe) +{ + struct gp8psk_fe_state *st = fe->demodulator_priv; + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + u8 cmd[10]; + u32 freq = c->frequency * 1000; + + dprintk("%s()\n", __func__); + + cmd[4] = freq & 0xff; + cmd[5] = (freq >> 8) & 0xff; + cmd[6] = (freq >> 16) & 0xff; + cmd[7] = (freq >> 24) & 0xff; + + /* backwards compatibility: DVB-S + 8-PSK were used for Turbo-FEC */ + if (c->delivery_system == SYS_DVBS && c->modulation == PSK_8) + c->delivery_system = SYS_TURBO; + + switch (c->delivery_system) { + case SYS_DVBS: + if (c->modulation != QPSK) { + dprintk("%s: unsupported modulation selected (%d)\n", + __func__, c->modulation); + return -EOPNOTSUPP; + } + c->fec_inner = FEC_AUTO; + break; + case SYS_DVBS2: /* kept for backwards compatibility */ + dprintk("%s: DVB-S2 delivery system selected\n", __func__); + break; + case SYS_TURBO: + dprintk("%s: Turbo-FEC delivery system selected\n", __func__); + break; + + default: + dprintk("%s: unsupported delivery system selected (%d)\n", + __func__, c->delivery_system); + return -EOPNOTSUPP; + } + + cmd[0] = c->symbol_rate & 0xff; + cmd[1] = (c->symbol_rate >> 8) & 0xff; + cmd[2] = (c->symbol_rate >> 16) & 0xff; + cmd[3] = (c->symbol_rate >> 24) & 0xff; + switch (c->modulation) { + case QPSK: + if (st->is_rev1) + if (gp8psk_tuned_to_DCII(fe)) + st->ops->reload(st->priv); + switch (c->fec_inner) { + case FEC_1_2: + cmd[9] = 0; break; + case FEC_2_3: + cmd[9] = 1; break; + case FEC_3_4: + cmd[9] = 2; break; + case FEC_5_6: + cmd[9] = 3; break; + case FEC_7_8: + cmd[9] = 4; break; + case FEC_AUTO: + cmd[9] = 5; break; + default: + cmd[9] = 5; break; + } + if (c->delivery_system == SYS_TURBO) + cmd[8] = ADV_MOD_TURBO_QPSK; + else + cmd[8] = ADV_MOD_DVB_QPSK; + break; + case PSK_8: /* PSK_8 is for compatibility with DN */ + cmd[8] = ADV_MOD_TURBO_8PSK; + switch (c->fec_inner) { + case FEC_2_3: + cmd[9] = 0; break; + case FEC_3_4: + cmd[9] = 1; break; + case FEC_3_5: + cmd[9] = 2; break; + case FEC_5_6: + cmd[9] = 3; break; + case FEC_8_9: + cmd[9] = 4; break; + default: + cmd[9] = 0; break; + } + break; + case QAM_16: /* QAM_16 is for compatibility with DN */ + cmd[8] = ADV_MOD_TURBO_16QAM; + cmd[9] = 0; + break; + default: /* Unknown modulation */ + dprintk("%s: unsupported modulation selected (%d)\n", + __func__, c->modulation); + return -EOPNOTSUPP; + } + + if (st->is_rev1) + gp8psk_set_tuner_mode(fe, 0); + st->ops->out(st->priv, TUNE_8PSK, 0, 0, cmd, 10); + + st->lock = 0; + st->next_status_check = jiffies; + st->status_check_interval = 200; + + return 0; +} + +static int gp8psk_fe_send_diseqc_msg (struct dvb_frontend* fe, + struct dvb_diseqc_master_cmd *m) +{ + struct gp8psk_fe_state *st = fe->demodulator_priv; + + dprintk("%s\n", __func__); + + if (st->ops->out(st->priv, SEND_DISEQC_COMMAND, m->msg[0], 0, + m->msg, m->msg_len)) { + return -EINVAL; + } + return 0; +} + +static int gp8psk_fe_send_diseqc_burst(struct dvb_frontend *fe, + enum fe_sec_mini_cmd burst) +{ + struct gp8psk_fe_state *st = fe->demodulator_priv; + u8 cmd; + + dprintk("%s\n", __func__); + + /* These commands are certainly wrong */ + cmd = (burst == SEC_MINI_A) ? 0x00 : 0x01; + + if (st->ops->out(st->priv, SEND_DISEQC_COMMAND, cmd, 0, + &cmd, 0)) { + return -EINVAL; + } + return 0; +} + +static int gp8psk_fe_set_tone(struct dvb_frontend *fe, + enum fe_sec_tone_mode tone) +{ + struct gp8psk_fe_state *st = fe->demodulator_priv; + + if (st->ops->out(st->priv, SET_22KHZ_TONE, + (tone == SEC_TONE_ON), 0, NULL, 0)) { + return -EINVAL; + } + return 0; +} + +static int gp8psk_fe_set_voltage(struct dvb_frontend *fe, + enum fe_sec_voltage voltage) +{ + struct gp8psk_fe_state *st = fe->demodulator_priv; + + if (st->ops->out(st->priv, SET_LNB_VOLTAGE, + voltage == SEC_VOLTAGE_18, 0, NULL, 0)) { + return -EINVAL; + } + return 0; +} + +static int gp8psk_fe_enable_high_lnb_voltage(struct dvb_frontend* fe, long onoff) +{ + struct gp8psk_fe_state *st = fe->demodulator_priv; + + return st->ops->out(st->priv, USE_EXTRA_VOLT, onoff, 0, NULL, 0); +} + +static int gp8psk_fe_send_legacy_dish_cmd (struct dvb_frontend* fe, unsigned long sw_cmd) +{ + struct gp8psk_fe_state *st = fe->demodulator_priv; + u8 cmd = sw_cmd & 0x7f; + + if (st->ops->out(st->priv, SET_DN_SWITCH, cmd, 0, NULL, 0)) + return -EINVAL; + + if (st->ops->out(st->priv, SET_LNB_VOLTAGE, !!(sw_cmd & 0x80), + 0, NULL, 0)) + return -EINVAL; + + return 0; +} + +static void gp8psk_fe_release(struct dvb_frontend* fe) +{ + struct gp8psk_fe_state *st = fe->demodulator_priv; + + kfree(st); +} + +static const struct dvb_frontend_ops gp8psk_fe_ops; + +struct dvb_frontend *gp8psk_fe_attach(const struct gp8psk_fe_ops *ops, + void *priv, bool is_rev1) +{ + struct gp8psk_fe_state *st; + + if (!ops || !ops->in || !ops->out || !ops->reload) { + pr_err("Error! gp8psk-fe ops not defined.\n"); + return NULL; + } + + st = kzalloc(sizeof(struct gp8psk_fe_state), GFP_KERNEL); + if (!st) + return NULL; + + memcpy(&st->fe.ops, &gp8psk_fe_ops, sizeof(struct dvb_frontend_ops)); + st->fe.demodulator_priv = st; + st->ops = ops; + st->priv = priv; + st->is_rev1 = is_rev1; + + pr_info("Frontend %sattached\n", is_rev1 ? "revision 1 " : ""); + + return &st->fe; +} +EXPORT_SYMBOL_GPL(gp8psk_fe_attach); + +static const struct dvb_frontend_ops gp8psk_fe_ops = { + .delsys = { SYS_DVBS }, + .info = { + .name = "Genpix DVB-S", + .frequency_min_hz = 800 * MHz, + .frequency_max_hz = 2250 * MHz, + .frequency_stepsize_hz = 100 * kHz, + .symbol_rate_min = 1000000, + .symbol_rate_max = 45000000, + .symbol_rate_tolerance = 500, /* ppm */ + .caps = FE_CAN_INVERSION_AUTO | + 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 is for compatibility + * (Myth incorrectly detects Turbo-QPSK as plain QAM-16) + */ + FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_TURBO_FEC + }, + + .release = gp8psk_fe_release, + + .init = NULL, + .sleep = NULL, + + .set_frontend = gp8psk_fe_set_frontend, + + .get_tune_settings = gp8psk_fe_get_tune_settings, + + .read_status = gp8psk_fe_read_status, + .read_ber = gp8psk_fe_read_ber, + .read_signal_strength = gp8psk_fe_read_signal_strength, + .read_snr = gp8psk_fe_read_snr, + .read_ucblocks = gp8psk_fe_read_unc_blocks, + + .diseqc_send_master_cmd = gp8psk_fe_send_diseqc_msg, + .diseqc_send_burst = gp8psk_fe_send_diseqc_burst, + .set_tone = gp8psk_fe_set_tone, + .set_voltage = gp8psk_fe_set_voltage, + .dishnetwork_send_legacy_command = gp8psk_fe_send_legacy_dish_cmd, + .enable_high_lnb_voltage = gp8psk_fe_enable_high_lnb_voltage +}; + +MODULE_AUTHOR("Alan Nisota <alannisota@gamil.com>"); +MODULE_DESCRIPTION("Frontend Driver for Genpix DVB-S"); +MODULE_VERSION("1.1"); +MODULE_LICENSE("GPL"); |