| /* 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 |
