1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-only */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * vivid-rds-gen.h - rds (radio data system) generator support functions. 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved. 6*4882a593Smuzhiyun */ 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun #ifndef _VIVID_RDS_GEN_H_ 9*4882a593Smuzhiyun #define _VIVID_RDS_GEN_H_ 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun /* 12*4882a593Smuzhiyun * It takes almost exactly 5 seconds to transmit 57 RDS groups. 13*4882a593Smuzhiyun * Each group has 4 blocks and each block has a payload of 16 bits + a 14*4882a593Smuzhiyun * block identification. The driver will generate the contents of these 15*4882a593Smuzhiyun * 57 groups only when necessary and it will just be played continuously. 16*4882a593Smuzhiyun */ 17*4882a593Smuzhiyun #define VIVID_RDS_GEN_GROUPS 57 18*4882a593Smuzhiyun #define VIVID_RDS_GEN_BLKS_PER_GRP 4 19*4882a593Smuzhiyun #define VIVID_RDS_GEN_BLOCKS (VIVID_RDS_GEN_BLKS_PER_GRP * VIVID_RDS_GEN_GROUPS) 20*4882a593Smuzhiyun #define VIVID_RDS_NSEC_PER_BLK (u32)(5ull * NSEC_PER_SEC / VIVID_RDS_GEN_BLOCKS) 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun struct vivid_rds_gen { 23*4882a593Smuzhiyun struct v4l2_rds_data data[VIVID_RDS_GEN_BLOCKS]; 24*4882a593Smuzhiyun bool use_rbds; 25*4882a593Smuzhiyun u16 picode; 26*4882a593Smuzhiyun u8 pty; 27*4882a593Smuzhiyun bool mono_stereo; 28*4882a593Smuzhiyun bool art_head; 29*4882a593Smuzhiyun bool compressed; 30*4882a593Smuzhiyun bool dyn_pty; 31*4882a593Smuzhiyun bool ta; 32*4882a593Smuzhiyun bool tp; 33*4882a593Smuzhiyun bool ms; 34*4882a593Smuzhiyun char psname[8 + 1]; 35*4882a593Smuzhiyun char radiotext[64 + 1]; 36*4882a593Smuzhiyun }; 37*4882a593Smuzhiyun 38*4882a593Smuzhiyun void vivid_rds_gen_fill(struct vivid_rds_gen *rds, unsigned freq, 39*4882a593Smuzhiyun bool use_alternate); 40*4882a593Smuzhiyun void vivid_rds_generate(struct vivid_rds_gen *rds); 41*4882a593Smuzhiyun 42*4882a593Smuzhiyun #endif 43