Set kernel version to 4.2
We switch from using our own tree, to building with upstream tarballs.
Currently we still require a small number of out of tree patches; this
list will shrink as we get the last of the patches upstream, to the
point where will just set the version.
The patches are generated from the tree at
https://github.com/open-power/linux still, and imported into the
buildroot overlay.
Signed-off-by: Joel Stanley <joel@jms.id.au>
diff --git a/openpower/linux/linux-0005-drm-ast-Default-to-8bpp-on-big-endian.patch b/openpower/linux/linux-0005-drm-ast-Default-to-8bpp-on-big-endian.patch
new file mode 100644
index 0000000..70e0ffc
--- /dev/null
+++ b/openpower/linux/linux-0005-drm-ast-Default-to-8bpp-on-big-endian.patch
@@ -0,0 +1,45 @@
+From f830d515678686ba2975dca0eac47dbae77a63b3 Mon Sep 17 00:00:00 2001
+From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
+Date: Fri, 31 Oct 2014 15:06:38 +1100
+Subject: [PATCH 5/9] drm/ast: Default to 8bpp on big endian
+
+This chip is LE only (some versions support HW swappers but not
+the latest and the driver doesn't anyway).
+
+I tried using the "foreign endian" fb flag but it appears to be
+busted, so instead, default to endian-neutral 8bpp for BE.
+
+Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
+Signed-off-by: Joel Stanley <joel@jms.id.au>
+---
+ drivers/gpu/drm/ast/ast_fb.c | 13 +++++++++++++
+ 1 file changed, 13 insertions(+)
+
+diff --git a/drivers/gpu/drm/ast/ast_fb.c b/drivers/gpu/drm/ast/ast_fb.c
+index ff68eef..c532c69 100644
+--- a/drivers/gpu/drm/ast/ast_fb.c
++++ b/drivers/gpu/drm/ast/ast_fb.c
+@@ -345,7 +345,20 @@ int ast_fbdev_init(struct drm_device *dev)
+ /* disable all the possible outputs/crtcs before entering KMS mode */
+ drm_helper_disable_unused_functions(dev);
+
++ /*
++ * This chip is LE only (some versions support HW swappers but not
++ * the latest and the driver doesn't anyway).
++ *
++ * I tried using the "foreign endian" fb flag but it appears to be
++ * busted, so instead, default to endian-neutral 8bpp for BE.
++ *
++ * (and it's faster !)
++ */
++#if defined(__BIG_ENDIAN)
++ ret = drm_fb_helper_initial_config(&afbdev->helper, 8);
++#else
+ ret = drm_fb_helper_initial_config(&afbdev->helper, 32);
++#endif
+ if (ret)
+ goto fini;
+
+--
+2.5.0
+