// SPDX-License-Identifier: GPL-2.0-or-later /* * Conexant cx24123/cx24109 - DVB QPSK Satellite demod/tuner driver * * Copyright (C) 2005 Steven Toth <[email protected]> * * Support for KWorld DVB-S 100 by Vadim Catana <[email protected]> * * Support for CX24123/CX24113-NIM by Patrick Boettcher <[email protected]> */ #include <linux/slab.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/init.h> #include <asm/div64.h> #include <media/dvb_frontend.h> #include "cx24123.h" #define XTAL … static int force_band; module_param(force_band, int, 0644); MODULE_PARM_DESC(…) …; static int debug; module_param(debug, int, 0644); MODULE_PARM_DESC(…) …; #define info(args...) … #define err(args...) … #define dprintk(args...) … struct cx24123_state { … }; /* Various tuner defaults need to be established for a given symbol rate Sps */ static struct cx24123_AGC_val { … } cx24123_AGC_vals[] = …; /* * Various tuner defaults need to be established for a given frequency kHz. * fixme: The bounds on the bands do not match the doc in real life. * fixme: Some of them have been moved, other might need adjustment. */ static struct cx24123_bandselect_val { … } cx24123_bandselect_vals[] = …; static struct { … } cx24123_regdata[] = …; static int cx24123_i2c_writereg(struct cx24123_state *state, u8 i2c_addr, int reg, int data) { … } static int cx24123_i2c_readreg(struct cx24123_state *state, u8 i2c_addr, u8 reg) { … } #define cx24123_readreg(state, reg) … #define cx24123_writereg(state, reg, val) … static int cx24123_set_inversion(struct cx24123_state *state, enum fe_spectral_inversion inversion) { … } static int cx24123_get_inversion(struct cx24123_state *state, enum fe_spectral_inversion *inversion) { … } static int cx24123_set_fec(struct cx24123_state *state, enum fe_code_rate fec) { … } static int cx24123_get_fec(struct cx24123_state *state, enum fe_code_rate *fec) { … } /* Approximation of closest integer of log2(a/b). It actually gives the lowest integer i such that 2^i >= round(a/b) */ static u32 cx24123_int_log2(u32 a, u32 b) { … } static int cx24123_set_symbolrate(struct cx24123_state *state, u32 srate) { … } /* * Based on the required frequency and symbolrate, the tuner AGC has * to be configured and the correct band selected. * Calculate those values. */ static int cx24123_pll_calculate(struct dvb_frontend *fe) { … } /* * Tuner data is 21 bits long, must be left-aligned in data. * Tuner cx24109 is written through a dedicated 3wire interface * on the demod chip. */ static int cx24123_pll_writereg(struct dvb_frontend *fe, u32 data) { … } static int cx24123_pll_tune(struct dvb_frontend *fe) { … } /* * 0x23: * [7:7] = BTI enabled * [6:6] = I2C repeater enabled * [5:5] = I2C repeater start * [0:0] = BTI start */ /* mode == 1 -> i2c-repeater, 0 -> bti */ static int cx24123_repeater_mode(struct cx24123_state *state, u8 mode, u8 start) { … } static int cx24123_initfe(struct dvb_frontend *fe) { … } static int cx24123_set_voltage(struct dvb_frontend *fe, enum fe_sec_voltage voltage) { … } /* wait for diseqc queue to become ready (or timeout) */ static void cx24123_wait_for_diseqc(struct cx24123_state *state) { … } static int cx24123_send_diseqc_msg(struct dvb_frontend *fe, struct dvb_diseqc_master_cmd *cmd) { … } static int cx24123_diseqc_send_burst(struct dvb_frontend *fe, enum fe_sec_mini_cmd burst) { … } static int cx24123_read_status(struct dvb_frontend *fe, enum fe_status *status) { … } /* * Configured to return the measurement of errors in blocks, * because no UCBLOCKS value is available, so this value doubles up * to satisfy both measurements. */ static int cx24123_read_ber(struct dvb_frontend *fe, u32 *ber) { … } static int cx24123_read_signal_strength(struct dvb_frontend *fe, u16 *signal_strength) { … } static int cx24123_read_snr(struct dvb_frontend *fe, u16 *snr) { … } static int cx24123_set_frontend(struct dvb_frontend *fe) { … } static int cx24123_get_frontend(struct dvb_frontend *fe, struct dtv_frontend_properties *p) { … } static int cx24123_set_tone(struct dvb_frontend *fe, enum fe_sec_tone_mode tone) { … } static int cx24123_tune(struct dvb_frontend *fe, bool re_tune, unsigned int mode_flags, unsigned int *delay, enum fe_status *status) { … } static enum dvbfe_algo cx24123_get_algo(struct dvb_frontend *fe) { … } static void cx24123_release(struct dvb_frontend *fe) { … } static int cx24123_tuner_i2c_tuner_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg msg[], int num) { … } static u32 cx24123_tuner_i2c_func(struct i2c_adapter *adapter) { … } static const struct i2c_algorithm cx24123_tuner_i2c_algo = …; struct i2c_adapter * cx24123_get_tuner_i2c_adapter(struct dvb_frontend *fe) { … } EXPORT_SYMBOL(…); static const struct dvb_frontend_ops cx24123_ops; struct dvb_frontend *cx24123_attach(const struct cx24123_config *config, struct i2c_adapter *i2c) { … } EXPORT_SYMBOL_GPL(…); static const struct dvb_frontend_ops cx24123_ops = …; MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
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