diff options
Diffstat (limited to 'drivers/media/platform/vivid/vivid-rds-gen.h')
| -rw-r--r-- | drivers/media/platform/vivid/vivid-rds-gen.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/drivers/media/platform/vivid/vivid-rds-gen.h b/drivers/media/platform/vivid/vivid-rds-gen.h new file mode 100644 index 000000000..35ac57423 --- /dev/null +++ b/drivers/media/platform/vivid/vivid-rds-gen.h @@ -0,0 +1,42 @@ +/* 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 |