| 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 + a |
|---|
| 14 | * block identification. The driver will generate the contents of these |
|---|
| 15 | * 57 groups only when necessary and it will just be played continuously. |
|---|
| 16 | */ |
|---|
| 17 | #define VIVID_RDS_GEN_GROUPS 57 |
|---|
| 18 | #define VIVID_RDS_GEN_BLKS_PER_GRP 4 |
|---|
| 19 | #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 | |
|---|
| 22 | struct 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 | |
|---|
| 38 | void vivid_rds_gen_fill(struct vivid_rds_gen *rds, unsigned freq, |
|---|
| 39 | bool use_alternate); |
|---|
| 40 | void vivid_rds_generate(struct vivid_rds_gen *rds); |
|---|
| 41 | |
|---|
| 42 | #endif |
|---|
| 43 | |
|---|
