From: Ben Skeggs <bskeggs@redhat.com>
Date: Mon, 4 Jul 2011 03:14:05 +0000 (+1000)
Subject: drm/nouveau: allow modeset module option to select 'headless mode'
X-Git-Tag: MMI-PSA29.97-13-9~18200^2~58^2~78
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=03bc9675d358ded9db07ba966f2f3f3c2fba2a9c;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git

drm/nouveau: allow modeset module option to select 'headless mode'

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
---

diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.c b/drivers/gpu/drm/nouveau/nouveau_drv.c
index b30ddd8d2e2a..c1e01f37b9d1 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drv.c
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.c
@@ -41,7 +41,7 @@ int nouveau_agpmode = -1;
 module_param_named(agpmode, nouveau_agpmode, int, 0400);
 
 MODULE_PARM_DESC(modeset, "Enable kernel modesetting");
-static int nouveau_modeset = -1; /* kms */
+int nouveau_modeset = -1;
 module_param_named(modeset, nouveau_modeset, int, 0400);
 
 MODULE_PARM_DESC(vbios, "Override default VBIOS location");
diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h
index 0661bcc94e57..7fdfad03f96c 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drv.h
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.h
@@ -798,6 +798,7 @@ nouveau_bo_ref(struct nouveau_bo *ref, struct nouveau_bo **pnvbo)
 }
 
 /* nouveau_drv.c */
+extern int nouveau_modeset;
 extern int nouveau_agpmode;
 extern int nouveau_duallink;
 extern int nouveau_uscript_lvds;
diff --git a/drivers/gpu/drm/nouveau/nouveau_state.c b/drivers/gpu/drm/nouveau/nouveau_state.c
index d4570220417f..d3b026125af1 100644
--- a/drivers/gpu/drm/nouveau/nouveau_state.c
+++ b/drivers/gpu/drm/nouveau/nouveau_state.c
@@ -431,6 +431,15 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
 		return 1;
 	}
 
+	/* headless mode */
+	if (nouveau_modeset == 2) {
+		engine->display.early_init = nouveau_stub_init;
+		engine->display.late_takedown = nouveau_stub_takedown;
+		engine->display.create = nouveau_stub_init;
+		engine->display.init = nouveau_stub_init;
+		engine->display.destroy = nouveau_stub_takedown;
+	}
+
 	return 0;
 }