V4L/DVB (5306): Add support for VIDIOC_G_CHIP_IDENT

VIDIOC_G_CHIP_IDENT improves debugging of card problems: it can be
used to detect which chips are on the board and based on that information
selected register dumps can be made, making it easy to debug complicated
media chips containing tens or hundreds of registers.
This ioctl replaces the internal VIDIOC_INT_G_CHIP_IDENT ioctl.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 62 insertions, 0 deletions

diff --git a/include/media/v4l2-chip-ident.h b/include/media/v4l2-chip-ident.h
new file mode 100644
index 000000000000..f6686ce133d8
--- /dev/null
+++ b/include/media/v4l2-chip-ident.h
@@ -0,0 +1,62 @@
+/*
+    v4l2 chip identifiers header
+
+    This header provides a list of chip identifiers that can be returned
+    through the VIDIOC_G_CHIP_IDENT ioctl.
+
+    Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
+
+    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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef V4L2_CHIP_IDENT_H_
+#define V4L2_CHIP_IDENT_H_
+
+/* VIDIOC_G_CHIP_IDENT: identifies the actual chip installed on the board */
+enum {
+        /* general idents: reserved range 0-49 */
+        V4L2_IDENT_NONE      = 0,       /* No chip matched */
+        V4L2_IDENT_AMBIGUOUS = 1,       /* Match too general, multiple chips matched */
+        V4L2_IDENT_UNKNOWN   = 2,       /* Chip found, but cannot identify */
+
+        /* module saa7110: just ident= 100 */
+        V4L2_IDENT_SAA7110 = 100,
+
+        /* module saa7111: just ident= 101 */
+        V4L2_IDENT_SAA7111 = 101,
+
+        /* module saa7115: reserved range 102-149 */
+        V4L2_IDENT_SAA7113 = 103,
+        V4L2_IDENT_SAA7114 = 104,
+        V4L2_IDENT_SAA7115 = 105,
+        V4L2_IDENT_SAA7118 = 108,
+
+        /* module saa7127: reserved range 150-199 */
+        V4L2_IDENT_SAA7127 = 157,
+        V4L2_IDENT_SAA7129 = 159,
+
+        /* module cx25840: reserved range 200-249 */
+        V4L2_IDENT_CX25836 = 236,
+        V4L2_IDENT_CX25837 = 237,
+        V4L2_IDENT_CX25840 = 240,
+        V4L2_IDENT_CX25841 = 241,
+        V4L2_IDENT_CX25842 = 242,
+        V4L2_IDENT_CX25843 = 243,
+
+        /* OmniVision sensors - range 250-299 */
+        V4L2_IDENT_OV7670 = 250,
+};
+
+#endif