aboutsummaryrefslogtreecommitdiff
path: root/arch/cris/include
diff options
context:
space:
mode:
authorJesper Nilsson <jesper.nilsson@axis.com>2010-08-04 11:30:41 +0200
committerJesper Nilsson <jesper.nilsson@axis.com>2010-08-04 13:02:39 +0200
commit72e08db187cbbfca00583c28b64ae81a35f4a287 (patch)
treeace1193be5b462baa08ac1a59810c89c1f560a37 /arch/cris/include
parent4f248d1cea12afd2d961509eb2ba19bd0939033f (diff)
downloadlinux-2.6.38-lt-ux500-72e08db187cbbfca00583c28b64ae81a35f4a287.tar.gz
CRIS: Add ARTPEC-3 and timestamps for sync-serial
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
Diffstat (limited to 'arch/cris/include')
-rw-r--r--arch/cris/include/asm/sync_serial.h27
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