[src/trunk]: src/sys/dev/videomode Parse the extension block count field, and...

[jmcneill <jmcneill%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/8b495a9208e2
branches:  trunk
changeset: 803937:8b495a9208e2
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Mon Nov 17 00:46:04 2014 +0000

description:
Parse the extension block count field, and make it available in struct edid_info

diffstat:

 sys/dev/videomode/edid.c    |  8 ++++++--
 sys/dev/videomode/edidreg.h |  4 +++-
 sys/dev/videomode/edidvar.h |  3 ++-
 3 files changed, 11 insertions(+), 4 deletions(-)

diffs (69 lines):

diff -r d5367f453bca -r 8b495a9208e2 sys/dev/videomode/edid.c
--- a/sys/dev/videomode/edid.c  Sun Nov 16 21:34:27 2014 +0000
+++ b/sys/dev/videomode/edid.c  Mon Nov 17 00:46:04 2014 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: edid.c,v 1.12 2013/02/08 16:35:10 skrll Exp $ */
+/* $NetBSD: edid.c,v 1.13 2014/11/17 00:46:04 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2006 Itronix Inc.
@@ -32,7 +32,7 @@
  */ 
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: edid.c,v 1.12 2013/02/08 16:35:10 skrll Exp $");
+__KERNEL_RCSID(0, "$NetBSD: edid.c,v 1.13 2014/11/17 00:46:04 jmcneill Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -286,6 +286,8 @@
                    DIVIDE(DIVIDE(edid->edid_preferred_mode->dot_clock * 1000,
                    edid->edid_preferred_mode->htotal),
                    edid->edid_preferred_mode->vtotal));
+
+       printf("Number of extension blocks: %d\n", edid->edid_ext_block_count);
 }
 
 static const struct videomode *
@@ -569,6 +571,8 @@
        edid->edid_chroma.ec_whitex = EDID_CHROMA_WHITEX(data);
        edid->edid_chroma.ec_whitey = EDID_CHROMA_WHITEY(data);
 
+       edid->edid_ext_block_count = EDID_EXT_BLOCK_COUNT(data);
+
        /* lookup established modes */
        edid->edid_nmodes = 0;
        edid->edid_preferred_mode = NULL;
diff -r d5367f453bca -r 8b495a9208e2 sys/dev/videomode/edidreg.h
--- a/sys/dev/videomode/edidreg.h       Sun Nov 16 21:34:27 2014 +0000
+++ b/sys/dev/videomode/edidreg.h       Mon Nov 17 00:46:04 2014 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: edidreg.h,v 1.3 2011/03/30 18:49:56 jdc Exp $  */
+/*     $NetBSD: edidreg.h,v 1.4 2014/11/17 00:46:04 jmcneill Exp $     */
 
 /*-
  * Copyright (c) 2006 Itronix Inc.
@@ -250,4 +250,6 @@
 #define        EDID_DESC_STD_TIMING_START              5
 #define        EDID_DESC_STD_TIMING_COUNT              6
 
+#define        EDID_EXT_BLOCK_COUNT(ptr)               ((ptr)[126])
+
 #endif /* _DEV_VIDEOMODE_EDIDREG_H */
diff -r d5367f453bca -r 8b495a9208e2 sys/dev/videomode/edidvar.h
--- a/sys/dev/videomode/edidvar.h       Sun Nov 16 21:34:27 2014 +0000
+++ b/sys/dev/videomode/edidvar.h       Mon Nov 17 00:46:04 2014 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: edidvar.h,v 1.2 2006/05/11 19:05:41 gdamore Exp $      */
+/*     $NetBSD: edidvar.h,v 1.3 2014/11/17 00:46:04 jmcneill Exp $     */
 
 /*-
  * Copyright (c) 2006 Itronix Inc.
@@ -75,6 +75,7 @@
        uint8_t         edid_max_vsize;         /* in cm */
        uint8_t         edid_gamma;
        uint8_t         edid_features;
+       uint8_t         edid_ext_block_count;
 
        int                     edid_have_range;
        struct edid_range       edid_range;