gpu: nvgpu: bring back tegra idle registration

To make do_idle work when nvgpu is built as a module, reverse the order
of call dependencies for do_idle. Don't provide visible
gk20a_do_{idle,unidle}() functions for the kernel but instead call the
kernel for registering and unregistering pointers to them when the
driver loads and unloads.

Refactor the internal __gk20a_do_{idle,unidle} functions to take a
struct gk20a * instead of struct device *, and use the callback api for
providing that g instead of retrieving the plat device from device tree.

Bug 200290850

Change-Id: Ibef8b069302e547b298069cbb97734f461a10cc3
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: http://git-master/r/1493774
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 0 insertions, 35 deletions

diff --git a/include/linux/gk20a.h b/include/linux/gk20a.h
deleted file mode 100644
index ec81faf4..00000000
--- a/include/linux/gk20a.h
+++ /dev/null
@@ -1,35 +0,0 @@
-/*
- * gk20a GPU driver
- *
- * Copyright (c) 2014-2016, 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_H
-#define __GK20A_H
-
-#include <linux/errno.h>
-
-struct channel_gk20a;
-struct platform_device;
-
-#if defined(CONFIG_GK20A) && defined(CONFIG_PM)
-int gk20a_do_idle(void);
-int gk20a_do_unidle(void);
-#else
-static inline int gk20a_do_idle(void) { return -ENOSYS; }
-static inline int gk20a_do_unidle(void) { return -ENOSYS; }
-#endif
-
-#endif