// SPDX-License-Identifier: GPL-2.0-or-later /* Conexant cx24120/cx24118 - DVBS/S2 Satellite demod/tuner driver Copyright (C) 2008 Patrick Boettcher <[email protected]> Copyright (C) 2009 Sergey Tyurin <forum.free-x.de> Updated 2012 by Jannis Achstetter <[email protected]> Copyright (C) 2015 Jemma Denson <[email protected]> April 2015 Refactored & simplified driver Updated to work with delivery system supplied by DVBv5 Add frequency, fec & pilot to get_frontend Cards supported: Technisat Skystar S2 */ #include <linux/slab.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/init.h> #include <linux/firmware.h> #include <media/dvb_frontend.h> #include "cx24120.h" #define CX24120_SEARCH_RANGE_KHZ … #define CX24120_FIRMWARE … /* cx24120 i2c registers */ #define CX24120_REG_CMD_START … #define CX24120_REG_CMD_ARGS … #define CX24120_REG_CMD_END … #define CX24120_REG_MAILBOX … #define CX24120_REG_FREQ3 … #define CX24120_REG_FREQ2 … #define CX24120_REG_FREQ1 … #define CX24120_REG_FECMODE … #define CX24120_REG_STATUS … #define CX24120_REG_SIGSTR_H … #define CX24120_REG_SIGSTR_L … #define CX24120_REG_QUALITY_H … #define CX24120_REG_QUALITY_L … #define CX24120_REG_BER_HH … #define CX24120_REG_BER_HL … #define CX24120_REG_BER_LH … #define CX24120_REG_BER_LL … #define CX24120_REG_UCB_H … #define CX24120_REG_UCB_L … #define CX24120_REG_CLKDIV … #define CX24120_REG_RATEDIV … #define CX24120_REG_REVISION … /* Command messages */ enum command_message_id { … }; #define CX24120_MAX_CMD_LEN … /* pilot mask */ #define CX24120_PILOT_OFF … #define CX24120_PILOT_ON … #define CX24120_PILOT_AUTO … /* signal status */ #define CX24120_HAS_SIGNAL … #define CX24120_HAS_CARRIER … #define CX24120_HAS_VITERBI … #define CX24120_HAS_LOCK … #define CX24120_HAS_UNK1 … #define CX24120_HAS_UNK2 … #define CX24120_STATUS_MASK … #define CX24120_SIGNAL_MASK … /* ber window */ #define CX24120_BER_WINDOW … #define CX24120_BER_WSIZE … #define info(args...) … #define err(args...) … /* The Demod/Tuner can't easily provide these, we cache them */ struct cx24120_tuning { … }; /* Private state */ struct cx24120_state { … }; /* Command message to firmware */ struct cx24120_cmd { … }; /* Read single register */ static int cx24120_readreg(struct cx24120_state *state, u8 reg) { … } /* Write single register */ static int cx24120_writereg(struct cx24120_state *state, u8 reg, u8 data) { … } /* Write multiple registers in chunks of i2c_wr_max-sized buffers */ static int cx24120_writeregs(struct cx24120_state *state, u8 reg, const u8 *values, u16 len, u8 incr) { … } static const struct dvb_frontend_ops cx24120_ops; struct dvb_frontend *cx24120_attach(const struct cx24120_config *config, struct i2c_adapter *i2c) { … } EXPORT_SYMBOL_GPL(…); static int cx24120_test_rom(struct cx24120_state *state) { … } static int cx24120_read_snr(struct dvb_frontend *fe, u16 *snr) { … } static int cx24120_read_ber(struct dvb_frontend *fe, u32 *ber) { … } static int cx24120_msg_mpeg_output_global_config(struct cx24120_state *state, u8 flag); /* Check if we're running a command that needs to disable mpeg out */ static void cx24120_check_cmd(struct cx24120_state *state, u8 id) { … } /* Send a message to the firmware */ static int cx24120_message_send(struct cx24120_state *state, struct cx24120_cmd *cmd) { … } /* Send a message and fill arg[] with the results */ static int cx24120_message_sendrcv(struct cx24120_state *state, struct cx24120_cmd *cmd, u8 numreg) { … } static int cx24120_read_signal_strength(struct dvb_frontend *fe, u16 *signal_strength) { … } static int cx24120_msg_mpeg_output_global_config(struct cx24120_state *state, u8 enable) { … } static int cx24120_msg_mpeg_output_config(struct cx24120_state *state, u8 seq) { … } static int cx24120_diseqc_send_burst(struct dvb_frontend *fe, enum fe_sec_mini_cmd burst) { … } static int cx24120_set_tone(struct dvb_frontend *fe, enum fe_sec_tone_mode tone) { … } static int cx24120_set_voltage(struct dvb_frontend *fe, enum fe_sec_voltage voltage) { … } static int cx24120_send_diseqc_msg(struct dvb_frontend *fe, struct dvb_diseqc_master_cmd *d) { … } static void cx24120_get_stats(struct cx24120_state *state) { … } static void cx24120_set_clock_ratios(struct dvb_frontend *fe); /* Read current tuning status */ static int cx24120_read_status(struct dvb_frontend *fe, enum fe_status *status) { … } /* * FEC & modulation lookup table * Used for decoding the REG_FECMODE register * once tuned in. */ struct cx24120_modfec { … }; static const struct cx24120_modfec modfec_lookup_table[] = …; /* Retrieve current fec, modulation & pilot values */ static int cx24120_get_fec(struct dvb_frontend *fe) { … } /* Calculate ber window time */ static void cx24120_calculate_ber_window(struct cx24120_state *state, u32 rate) { … } /* * Clock ratios lookup table * * Values obtained from much larger table in old driver * which had numerous entries which would never match. * * There's probably some way of calculating these but I * can't determine the pattern */ struct cx24120_clock_ratios_table { … }; static const struct cx24120_clock_ratios_table clock_ratios_table[] = …; /* Set clock ratio from lookup table */ static void cx24120_set_clock_ratios(struct dvb_frontend *fe) { … } /* Set inversion value */ static int cx24120_set_inversion(struct cx24120_state *state, enum fe_spectral_inversion inversion) { … } /* FEC lookup table for tuning */ struct cx24120_modfec_table { … }; static const struct cx24120_modfec_table modfec_table[] = …; /* Set fec_val & fec_mask values from delsys, modulation & fec */ static int cx24120_set_fec(struct cx24120_state *state, enum fe_modulation mod, enum fe_code_rate fec) { … } /* Set pilot */ static int cx24120_set_pilot(struct cx24120_state *state, enum fe_pilot pilot) { … } /* Set symbol rate */ static int cx24120_set_symbolrate(struct cx24120_state *state, u32 rate) { … } /* Overwrite the current tuning params, we are about to tune */ static void cx24120_clone_params(struct dvb_frontend *fe) { … } static int cx24120_set_frontend(struct dvb_frontend *fe) { … } /* Set vco from config */ static int cx24120_set_vco(struct cx24120_state *state) { … } static int cx24120_init(struct dvb_frontend *fe) { … } static int cx24120_tune(struct dvb_frontend *fe, bool re_tune, unsigned int mode_flags, unsigned int *delay, enum fe_status *status) { … } static enum dvbfe_algo cx24120_get_algo(struct dvb_frontend *fe) { … } static int cx24120_sleep(struct dvb_frontend *fe) { … } static int cx24120_get_frontend(struct dvb_frontend *fe, struct dtv_frontend_properties *c) { … } static void cx24120_release(struct dvb_frontend *fe) { … } static int cx24120_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) { … } static const struct dvb_frontend_ops cx24120_ops = …; MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
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