linux/drivers/media/dvb-frontends/s921.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 *   Sharp VA3A5JZ921 One Seg Broadcast Module driver
 *   This device is labeled as just S. 921 at the top of the frontend can
 *
 *   Copyright (C) 2009-2010 Mauro Carvalho Chehab
 *   Copyright (C) 2009-2010 Douglas Landgraf <[email protected]>
 *
 *   Developed for Leadership SBTVD 1seg device sold in Brazil
 *
 *   Frontend module based on cx24123 driver, getting some info from
 *	the old s921 driver.
 *
 *   FIXME: Need to port to DVB v5.2 API
 */

#include <linux/kernel.h>
#include <asm/div64.h>

#include <media/dvb_frontend.h>
#include "s921.h"

static int debug = …;
module_param(debug, int, 0644);
MODULE_PARM_DESC(…) …;

#define rc(args...) …

#define dprintk(args...) …

struct s921_state { … };

/*
 * 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 s921_bandselect_val { … } s921_bandselect[] = …;

struct regdata { … };

static struct regdata s921_init[] = …;

static struct regdata s921_prefreq[] = …;

static struct regdata s921_postfreq[] = …;

static int s921_i2c_writereg(struct s921_state *state,
			     u8 i2c_addr, int reg, int data)
{ … }

static int s921_i2c_writeregdata(struct s921_state *state, u8 i2c_addr,
				 struct regdata *rd, int size)
{ … }

static int s921_i2c_readreg(struct s921_state *state, u8 i2c_addr, u8 reg)
{ … }

#define s921_readreg(state, reg) …
#define s921_writereg(state, reg, val) …
#define s921_writeregdata(state, regdata) …

static int s921_pll_tune(struct dvb_frontend *fe)
{ … }

static int s921_initfe(struct dvb_frontend *fe)
{ … }

static int s921_read_status(struct dvb_frontend *fe, enum fe_status *status)
{ … }

static int s921_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
{ … }

static int s921_set_frontend(struct dvb_frontend *fe)
{ … }

static int s921_get_frontend(struct dvb_frontend *fe,
			     struct dtv_frontend_properties *p)
{ … }

static int s921_tune(struct dvb_frontend *fe,
			bool re_tune,
			unsigned int mode_flags,
			unsigned int *delay,
			enum fe_status *status)
{ … }

static enum dvbfe_algo s921_get_algo(struct dvb_frontend *fe)
{ … }

static void s921_release(struct dvb_frontend *fe)
{ … }

static const struct dvb_frontend_ops s921_ops;

struct dvb_frontend *s921_attach(const struct s921_config *config,
				    struct i2c_adapter *i2c)
{ … }
EXPORT_SYMBOL_GPL(…);

static const struct dvb_frontend_ops s921_ops = …;

MODULE_DESCRIPTION(…) …;
MODULE_AUTHOR(…) …;
MODULE_AUTHOR(…) …;
MODULE_LICENSE(…) …;