gpu: nvgpu: Move gk20a_scale to be Linux only

Move gk20a_scale.[ch] to be common/linux/scale.[ch]. The code is
Linux specific, and only referred from Linux specific source files.

Change the license back to GPL.

JIRA NVGPU-259

Change-Id: I89fa905a1fea4f93c826ddfe2ffce34aefc1b0a2
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1588650
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 66 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/common/linux/scale.h b/drivers/gpu/nvgpu/common/linux/scale.h
new file mode 100644
index 00000000..c1e6fe86
--- /dev/null
+++ b/drivers/gpu/nvgpu/common/linux/scale.h
@@ -0,0 +1,66 @@
+/*
+ * gk20a clock scaling profile
+ *
+ * Copyright (c) 2013-2016, NVIDIA Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GK20A_SCALE_H
+#define GK20A_SCALE_H
+
+#include <linux/devfreq.h>
+
+struct clk;
+
+struct gk20a_scale_profile {
+        struct device                   *dev;
+        ktime_t                         last_event_time;
+        struct devfreq_dev_profile      devfreq_profile;
+        struct devfreq_dev_status       dev_stat;
+        struct notifier_block           qos_notify_block;
+        unsigned long                   qos_min_freq;
+        unsigned long                   qos_max_freq;
+        void                            *private_data;
+};
+
+/* Initialization and de-initialization for module */
+void gk20a_scale_init(struct device *);
+void gk20a_scale_exit(struct device *);
+void gk20a_scale_hw_init(struct device *dev);
+
+#if defined(CONFIG_GK20A_DEVFREQ)
+/*
+ * call when performing submit to notify scaling mechanism that the module is
+ * in use
+ */
+void gk20a_scale_notify_busy(struct device *);
+void gk20a_scale_notify_idle(struct device *);
+
+void gk20a_scale_suspend(struct device *);
+void gk20a_scale_resume(struct device *);
+int gk20a_scale_qos_notify(struct notifier_block *nb,
+                        unsigned long n, void *p);
+#else
+static inline void gk20a_scale_notify_busy(struct device *dev) {}
+static inline void gk20a_scale_notify_idle(struct device *dev) {}
+static inline void gk20a_scale_suspend(struct device *dev) {}
+static inline void gk20a_scale_resume(struct device *dev) {}
+static inline int gk20a_scale_qos_notify(struct notifier_block *nb,
+                        unsigned long n, void *p)
+{
+        return -ENOSYS;
+}
+#endif
+
+#endif