input: cfboost: Explicitly turn on the GPU

Currently we inform the QoS that the GPU should be powered, however,
we need to also restore the state of the GPU. This patch adds explicit
pm_runtime_get/put_autosuspend() calls to ensure that the GPU is really
initialised immediately.

Bug 1506585

Change-Id: I1f08ca072f4a7ef038bb4e8e12323846480c6a12
Signed-off-by: Arto Merilainen <amerilainen@nvidia.com>
Reviewed-on: http://git-master/r/403770
Reviewed-by: Jonathan Mccaffrey <jmccaffrey@nvidia.com>
Tested-by: Jonathan Mccaffrey <jmccaffrey@nvidia.com>
Reviewed-by: Peter Zu <pzu@nvidia.com>
Reviewed-by: Mitch Luban <mluban@nvidia.com>

diff --git a/drivers/input/input-cfboost.c b/drivers/input/input-cfboost.c
index a081ddb5f4ddb5930e6c7e92aa1b3ea0967881ac..74500361b9d5b8be742247a45220a67662250ba3 100644 (file)
--- a/drivers/input/input-cfboost.c
+++ b/drivers/input/input-cfboost.c
@@ -1,7 +1,7 @@
 /*
  * drivers/input/input-cfboost.c
  *
- * Copyright (c) 2012-2013, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2012-2014, NVIDIA CORPORATION.  All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -24,6 +24,7 @@
 #include <linux/input.h>
 #include <linux/module.h>
 #include <linux/pm_qos.h>
+#include <linux/pm_runtime.h>
 #include <linux/sched/rt.h>
 
 #define CREATE_TRACE_POINTS
@@ -122,9 +123,12 @@ static void cfb_boost(struct kthread_work *w)
                pm_qos_update_request_timeout(&emc_req, boost_emc,
                                boost_time * 1000);
 
-       if (gpu_wakeup && gpu_device)
+       if (gpu_wakeup && gpu_device) {
                dev_pm_qos_update_request_timeout(&gpu_wakeup_req,
                                PM_QOS_FLAG_NO_POWER_OFF, boost_time);
+               pm_runtime_get(gpu_device);
+               pm_runtime_put_autosuspend(gpu_device);
+       }
 }
 
 static struct task_struct *boost_kthread;