diff options
| -rw-r--r-- | arch/cris/include/asm/sync_serial.h | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/arch/cris/include/asm/sync_serial.h b/arch/cris/include/asm/sync_serial.h index d87c24df2b3..7f827fea30e 100644 --- a/arch/cris/include/asm/sync_serial.h +++ b/arch/cris/include/asm/sync_serial.h @@ -19,6 +19,7 @@ #define SSP_OPOLARITY _IOR('S', 4, unsigned int) #define SSP_SPI _IOR('S', 5, unsigned int) #define SSP_INBUFCHUNK _IOR('S', 6, unsigned int) +#define SSP_INPUT _IOR('S', 7, unsigned int) /* Values for SSP_SPEED */ #define SSP150 0 @@ -37,6 +38,7 @@ #define SSP921600 13 #define SSP3125000 14 #define CODEC 15 +#define CODEC_f32768 16 #define FREQ_4MHz 0 #define FREQ_2MHz 1 @@ -46,9 +48,14 @@ #define FREQ_128kHz 5 #define FREQ_64kHz 6 #define FREQ_32kHz 7 +/* FREQ_* with values where bit (value & 0x10) is set are */ +/* used for CODEC_f32768 */ +#define FREQ_4096kHz 16 /* CODEC_f32768 */ /* Used by application to set CODEC divider, word rate and frame rate */ -#define CODEC_VAL(freq, clk_per_sync, sync_per_frame) (CODEC | (freq << 8) | (clk_per_sync << 16) | (sync_per_frame << 28)) +#define CODEC_VAL(freq, clk_per_sync, sync_per_frame) \ + ((CODEC + ((freq & 0x10) >> 4)) | (freq << 8) | \ + (clk_per_sync << 16) | (sync_per_frame << 28)) /* Used by driver to extract speed */ #define GET_SPEED(x) (x & 0xff) @@ -68,6 +75,7 @@ #define NORMAL_SYNC 1 #define EARLY_SYNC 2 #define SECOND_WORD_SYNC 0x40000 +#define LATE_SYNC 0x80000 #define BIT_SYNC 4 #define WORD_SYNC 8 @@ -104,4 +112,21 @@ /* Values for SSP_INBUFCHUNK */ /* plain integer with the size of DMA chunks */ +/* To ensure that the timestamps are aligned with the data being read + * the read length MUST be a multiple of the length of the DMA buffers. + * + * Use a multiple of SSP_INPUT_CHUNK_SIZE defined below. + */ +#define SSP_INPUT_CHUNK_SIZE 256 + +/* Request struct to pass through the ioctl interface to read + * data with timestamps. + */ +struct ssp_request { + char __user *buf; /* Where to put the data. */ + size_t len; /* Size of buf. MUST be a multiple of */ + /* SSP_INPUT_CHUNK_SIZE! */ + struct timespec ts; /* The time the data was sampled. */ +}; + #endif |