1 files changed, 61 insertions, 0 deletions

diff --git a/drivers/media/video/cx25821/cx25821-audio.h b/drivers/media/video/cx25821/cx25821-audio.h
new file mode 100644
index 000000000000..8eb55b7b88cb
--- /dev/null
+++ b/drivers/media/video/cx25821/cx25821-audio.h
@@ -0,0 +1,61 @@
+/*
+ *  Driver for the Conexant CX25821 PCIe bridge
+ *
+ *  Copyright (C) 2009 Conexant Systems Inc.
+ *  Authors  <shu.lin@conexant.com>, <hiep.huynh@conexant.com>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef __CX25821_AUDIO_H__
+#define __CX25821_AUDIO_H__
+
+#define USE_RISC_NOOP               1
+#define LINES_PER_BUFFER            15
+#define AUDIO_LINE_SIZE             128
+
+/* Number of buffer programs to use at once. */
+#define NUMBER_OF_PROGRAMS  8
+
+/*
+ * Max size of the RISC program for a buffer. - worst case is 2 writes per line
+ * Space is also added for the 4 no-op instructions added on the end.
+ */
+#ifndef USE_RISC_NOOP
+#define MAX_BUFFER_PROGRAM_SIZE     \
+        (2 * LINES_PER_BUFFER * RISC_WRITE_INSTRUCTION_SIZE + \
+        RISC_WRITECR_INSTRUCTION_SIZE * 4)
+#endif
+
+/* MAE 12 July 2005 Try to use NOOP RISC instruction instead */
+#ifdef USE_RISC_NOOP
+#define MAX_BUFFER_PROGRAM_SIZE     \
+        (2 * LINES_PER_BUFFER * RISC_WRITE_INSTRUCTION_SIZE + \
+        RISC_NOOP_INSTRUCTION_SIZE * 4)
+#endif
+
+/* Sizes of various instructions in bytes.  Used when adding instructions. */
+#define RISC_WRITE_INSTRUCTION_SIZE 12
+#define RISC_JUMP_INSTRUCTION_SIZE  12
+#define RISC_SKIP_INSTRUCTION_SIZE  4
+#define RISC_SYNC_INSTRUCTION_SIZE  4
+#define RISC_WRITECR_INSTRUCTION_SIZE  16
+#define RISC_NOOP_INSTRUCTION_SIZE 4
+
+#define MAX_AUDIO_DMA_BUFFER_SIZE       \
+(MAX_BUFFER_PROGRAM_SIZE * NUMBER_OF_PROGRAMS + RISC_SYNC_INSTRUCTION_SIZE)
+
+#endif