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1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * vivid-rds-gen.h - rds (radio data system) generator support functions.4 *5 * Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved.6 */7 8#ifndef _VIVID_RDS_GEN_H_9#define _VIVID_RDS_GEN_H_10 11/*12 * It takes almost exactly 5 seconds to transmit 57 RDS groups.13 * Each group has 4 blocks and each block has a payload of 16 bits + a14 * block identification. The driver will generate the contents of these15 * 57 groups only when necessary and it will just be played continuously.16 */17#define VIVID_RDS_GEN_GROUPS 5718#define VIVID_RDS_GEN_BLKS_PER_GRP 419#define VIVID_RDS_GEN_BLOCKS (VIVID_RDS_GEN_BLKS_PER_GRP * VIVID_RDS_GEN_GROUPS)20#define VIVID_RDS_NSEC_PER_BLK (u32)(5ull * NSEC_PER_SEC / VIVID_RDS_GEN_BLOCKS)21 22struct vivid_rds_gen {23 struct v4l2_rds_data data[VIVID_RDS_GEN_BLOCKS];24 bool use_rbds;25 u16 picode;26 u8 pty;27 bool mono_stereo;28 bool art_head;29 bool compressed;30 bool dyn_pty;31 bool ta;32 bool tp;33 bool ms;34 char psname[8 + 1];35 char radiotext[64 + 1];36};37 38void vivid_rds_gen_fill(struct vivid_rds_gen *rds, unsigned freq,39 bool use_alternate);40void vivid_rds_generate(struct vivid_rds_gen *rds);41 42#endif43