package/amd-catalyst: Add AMD proprietary graphic stack support

This commits adds support for the AMD Catalyst Linux driver 15.9
(15.201.1151). It includes the fglrx kernel module with various fixes
to make it work with at least Linux kernel 4.4 LTS, the userspace OpenGL
stack and the xorg driver module.

Signed-off-by: Romain Perier <romain.perier@free-electrons.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
[Thomas:
 - fixup whitespace issues noticed by Yann.
 - register AMD_CATALYST_PREPARE_MODULE as a post-patch hook rather than
   calling it during the configure step, also suggested by Yann.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

1 files changed, 33 insertions, 0 deletions

diff --git a/package/amd-catalyst/0004-Use-fpregs_active-instead-of-has_fpu.patch b/package/amd-catalyst/0004-Use-fpregs_active-instead-of-has_fpu.patch
new file mode 100644
index 0000000000..4d375b8ad8
--- /dev/null
+++ b/package/amd-catalyst/0004-Use-fpregs_active-instead-of-has_fpu.patch
@@ -0,0 +1,33 @@
+From 7120f00015570a2e4d9b6532731960d509c71cba Mon Sep 17 00:00:00 2001
+From: Alberto Milone <alberto.milone@canonical.com>
+Date: Thu, 17 Sep 2015 15:48:30 +0200
+Subject: [PATCH] Use fpregs_active instead of has_fpu
+
+This is for Linux 4.2
+
+Thanks to Tim Gardner for the patch.
+
+Signed-off-by: Romain Perier <romain.perier@free-electrons.com>
+---
+ common/lib/modules/fglrx/build_mod/firegl_public.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/common/lib/modules/fglrx/build_mod/firegl_public.c b/common/lib/modules/fglrx/build_mod/firegl_public.c
+index 749ea51..4c1f9a5 100755
+--- a/common/lib/modules/fglrx/build_mod/firegl_public.c
++++ b/common/lib/modules/fglrx/build_mod/firegl_public.c
+@@ -6528,7 +6528,11 @@ void ATI_API_CALL KCL_fpu_begin(void)
+     /* The thread structure is changed with the commit below for kernel 3.3:
+      * https://github.com/torvalds/linux/commit/7e16838d94b566a17b65231073d179bc04d590c8
+      */
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,2,0)
++    if (cur_task->thread.fpu.fpregs_active)
++#else
+     if (cur_task->thread.fpu.has_fpu)
++#endif
+ #else
+     if (cur_task->thread.has_fpu)
+ #endif
+-- 
+2.8.1
+