From: Alex Deucher <alexander.deucher@amd.com>
Date: Fri, 2 Oct 2015 17:53:33 +0000 (-0400)
Subject: drm/amdgpu/atom: implement debug opcode
X-Git-Tag: firefly_0821_release~176^2~721^2~30^2~30
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=f76097c099ab84befce13c0cbc827ece6ea3bcdb;p=firefly-linux-kernel-4.4.55.git

drm/amdgpu/atom: implement debug opcode

Basically a nop.

Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/amdgpu/atom.c b/drivers/gpu/drm/amd/amdgpu/atom.c
index a0346a90d805..331bd059d2ec 100644
--- a/drivers/gpu/drm/amd/amdgpu/atom.c
+++ b/drivers/gpu/drm/amd/amdgpu/atom.c
@@ -1022,7 +1022,8 @@ static void atom_op_xor(atom_exec_context *ctx, int *ptr, int arg)
 
 static void atom_op_debug(atom_exec_context *ctx, int *ptr, int arg)
 {
-	printk(KERN_INFO "unimplemented!\n");
+	uint8_t val = U8((*ptr)++);
+	SDEBUG("DEBUG output: 0x%02X\n", val);
 }
 
 static struct {