text: /* SPDX-License-Identifier: GPL-2.0-only */
  /*
   * vivid-rds-gen.h - rds (radio data system) generator support functions.
   *
   * Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
   */
  
  #ifndef _VIVID_RDS_GEN_H_
  #define _VIVID_RDS_GEN_H_
  
  /*
   * It takes almost exactly 5 seconds to transmit 57 RDS groups.
   * Each group has 4 blocks and each block has a payload of 16 bits + a
   * block identification. The driver will generate the contents of these
   * 57 groups only when necessary and it will just be played continuously.
   */
  #define VIVID_RDS_GEN_GROUPS 57
  #define VIVID_RDS_GEN_BLKS_PER_GRP 4
  #define VIVID_RDS_GEN_BLOCKS (VIVID_RDS_GEN_BLKS_PER_GRP * VIVID_RDS_GEN_GROUPS)
  #define VIVID_RDS_NSEC_PER_BLK (u32)(5ull * NSEC_PER_SEC / VIVID_RDS_GEN_BLOCKS)
  
  struct vivid_rds_gen {
  	struct v4l2_rds_data	data[VIVID_RDS_GEN_BLOCKS];
  	bool			use_rbds;
  	u16			picode;
  	u8			pty;
  	bool			mono_stereo;
  	bool			art_head;
  	bool			compressed;
  	bool			dyn_pty;
  	bool			ta;
  	bool			tp;
  	bool			ms;
  	char			psname[8 + 1];
  	char			radiotext[64 + 1];
  };
  
  void vivid_rds_gen_fill(struct vivid_rds_gen *rds, unsigned freq,
  		    bool use_alternate);
  void vivid_rds_generate(struct vivid_rds_gen *rds);
  
  #endif
  