linux/drivers/media/usb/pvrusb2/pvrusb2-ctrl.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 *
 *  Copyright (C) 2005 Mike Isely <[email protected]>
 */

#include "pvrusb2-ctrl.h"
#include "pvrusb2-hdw-internal.h"
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mutex.h>


static int pvr2_ctrl_range_check(struct pvr2_ctrl *cptr,int val)
{ … }


/* Set the given control. */
int pvr2_ctrl_set_value(struct pvr2_ctrl *cptr,int val)
{ … }


/* Set/clear specific bits of the given control. */
int pvr2_ctrl_set_mask_value(struct pvr2_ctrl *cptr,int mask,int val)
{ … }


/* Get the current value of the given control. */
int pvr2_ctrl_get_value(struct pvr2_ctrl *cptr,int *valptr)
{ … }


/* Retrieve control's type */
enum pvr2_ctl_type pvr2_ctrl_get_type(struct pvr2_ctrl *cptr)
{ … }


/* Retrieve control's maximum value (int type) */
int pvr2_ctrl_get_max(struct pvr2_ctrl *cptr)
{ … }


/* Retrieve control's minimum value (int type) */
int pvr2_ctrl_get_min(struct pvr2_ctrl *cptr)
{ … }


/* Retrieve control's default value (any type) */
int pvr2_ctrl_get_def(struct pvr2_ctrl *cptr, int *valptr)
{ … }


/* Retrieve control's enumeration count (enum only) */
int pvr2_ctrl_get_cnt(struct pvr2_ctrl *cptr)
{ … }


/* Retrieve control's valid mask bits (bit mask only) */
int pvr2_ctrl_get_mask(struct pvr2_ctrl *cptr)
{ … }


/* Retrieve the control's name */
const char *pvr2_ctrl_get_name(struct pvr2_ctrl *cptr)
{ … }


/* Retrieve the control's desc */
const char *pvr2_ctrl_get_desc(struct pvr2_ctrl *cptr)
{ … }


/* Retrieve a control enumeration or bit mask value */
int pvr2_ctrl_get_valname(struct pvr2_ctrl *cptr,int val,
			  char *bptr,unsigned int bmax,
			  unsigned int *blen)
{ … }


/* Return V4L ID for this control or zero if none */
int pvr2_ctrl_get_v4lid(struct pvr2_ctrl *cptr)
{ … }


unsigned int pvr2_ctrl_get_v4lflags(struct pvr2_ctrl *cptr)
{ … }


/* Return true if control is writable */
int pvr2_ctrl_is_writable(struct pvr2_ctrl *cptr)
{ … }


/* Return true if control has custom symbolic representation */
int pvr2_ctrl_has_custom_symbols(struct pvr2_ctrl *cptr)
{ … }


/* Convert a given mask/val to a custom symbolic value */
int pvr2_ctrl_custom_value_to_sym(struct pvr2_ctrl *cptr,
				  int mask,int val,
				  char *buf,unsigned int maxlen,
				  unsigned int *len)
{ … }


/* Convert a symbolic value to a mask/value pair */
int pvr2_ctrl_custom_sym_to_value(struct pvr2_ctrl *cptr,
				  const char *buf,unsigned int len,
				  int *maskptr,int *valptr)
{ … }


static unsigned int gen_bitmask_string(int msk,int val,int msk_only,
				       const char **names,
				       char *ptr,unsigned int len)
{ … }


static const char *boolNames[] = …;


static int parse_token(const char *ptr,unsigned int len,
		       int *valptr,
		       const char * const *names, unsigned int namecnt)
{ … }


static int parse_mtoken(const char *ptr,unsigned int len,
			int *valptr,
			const char **names,int valid_bits)
{ … }


static int parse_tlist(const char *ptr,unsigned int len,
		       int *maskptr,int *valptr,
		       const char **names,int valid_bits)
{ … }


/* Convert a symbolic value to a mask/value pair */
int pvr2_ctrl_sym_to_value(struct pvr2_ctrl *cptr,
			   const char *ptr,unsigned int len,
			   int *maskptr,int *valptr)
{ … }


/* Convert a given mask/val to a symbolic value */
int pvr2_ctrl_value_to_sym_internal(struct pvr2_ctrl *cptr,
				    int mask,int val,
				    char *buf,unsigned int maxlen,
				    unsigned int *len)
{ … }


/* Convert a given mask/val to a symbolic value */
int pvr2_ctrl_value_to_sym(struct pvr2_ctrl *cptr,
			   int mask,int val,
			   char *buf,unsigned int maxlen,
			   unsigned int *len)
{ … }