[src/trunk]: src/sys/dev/ic ssdfb: make it work on big-endian

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

details:   https://anonhg.NetBSD.org/src/rev/37451afadfd8
branches:  trunk
changeset: 1022743:37451afadfd8
user:      tnn <tnn%NetBSD.org@localhost>
date:      Thu Aug 05 00:02:51 2021 +0000

description:
ssdfb: make it work on big-endian

diffstat:

 sys/dev/ic/ssdfb.c |  22 ++++++++++++----------
 1 files changed, 12 insertions(+), 10 deletions(-)

diffs (61 lines):

diff -r 19e9d1ad4aca -r 37451afadfd8 sys/dev/ic/ssdfb.c
--- a/sys/dev/ic/ssdfb.c        Wed Aug 04 21:44:41 2021 +0000
+++ b/sys/dev/ic/ssdfb.c        Thu Aug 05 00:02:51 2021 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: ssdfb.c,v 1.15 2021/08/02 14:00:48 tnn Exp $ */
+/* $NetBSD: ssdfb.c,v 1.16 2021/08/05 00:02:51 tnn Exp $ */
 
 /*
  * Copyright (c) 2019 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ssdfb.c,v 1.15 2021/08/02 14:00:48 tnn Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ssdfb.c,v 1.16 2021/08/05 00:02:51 tnn Exp $");
 
 #include "opt_ddb.h"
 
@@ -1126,24 +1126,27 @@
                src = (uint16_t*)&ri->ri_bits[y * ri->ri_stride];
                src32 = (uint32_t*)src;
                for (x = 0; x < width_in_blocks; x++) {
-#if _BYTE_ORDER == _LITTLE_ENDIAN
-#  ifdef SSDFB_USE_NATIVE_DEPTH
+#ifdef SSDFB_USE_NATIVE_DEPTH
                        raw_block =
                            ((*src << 12) & 0xf000) |
-                           ((*src << 4) & 0x0f00) |
-                           ((*src >> 4) & 0x00f0) |
+                           ((*src << 4)  & 0x0f00) |
+                           ((*src >> 4)  & 0x00f0) |
                            ((*src >> 12) & 0x000f);
                        src++;
-#  else
+#else
                        raw_block =
+#  if _BYTE_ORDER == _LITTLE_ENDIAN
                            ((*src32 <<  8) & 0x0f00) |
                            ((*src32 <<  4) & 0xf000) |
                            ((*src32 >> 16) & 0x000f) |
                            ((*src32 >> 20) & 0x00f0);
+#  else
+                           ((*src32 >> 24) & 0x000f) |
+                           ((*src32 >> 12) & 0x00f0) |
+                           ((*src32      ) & 0x0f00) |
+                           ((*src32 << 12) & 0xf000);
 #  endif
                        src32++;
-#else
-#  error please add big endian host support here
 #endif
                        if (raw_block != *blockp) {
                                *blockp = raw_block;
@@ -1159,7 +1162,6 @@
                        blockp++;
                }
        }
-
        blockp = (uint16_t*)sc->sc_gddram;
        if (x2 != -1)
                return sc->sc_transfer_rect(sc->sc_cookie,