drm/msm: add modeset module param
At least for debugging it is nice to have an easy way to force the
driver not to load.
Signed-off-by: Rob Clark <robdclark@gmail.com>
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index a19c393..dda55b6 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm/msm_drv.c
@@ -73,6 +73,10 @@ bool dumpstate = false;
MODULE_PARM_DESC(dumpstate, "Dump KMS state on errors");
module_param(dumpstate, bool, 0600);
+static bool modeset = true;
+MODULE_PARM_DESC(modeset, "Use kernel modesetting [KMS] (1=on (default), 0=disable)");
+module_param(modeset, bool, 0600);
+
/*
* Util/helpers:
*/
@@ -1133,6 +1137,9 @@ static struct platform_driver msm_platform_driver = {
static int __init msm_drm_register(void)
{
+ if (!modeset)
+ return -EINVAL;
+
DBG("init");
msm_mdp_register();
msm_dsi_register();