drivers/gpu/host1x/channel.h

   1 /*
   2  * Tegra host1x Channel
   3  *
   4  * Copyright (c) 2010-2013, NVIDIA Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #ifndef __HOST1X_CHANNEL_H
  20 #define __HOST1X_CHANNEL_H
  21
  22 #include <linux/io.h>
  23 #include <linux/kref.h>
  24
  25 #include "cdma.h"
  26
  27 struct host1x;
  28 struct host1x_channel;
  29
  30 struct host1x_channel_list {
  31         struct host1x_channel *channels;
  32         unsigned long *allocated_channels;
  33 };
  34
  35 struct host1x_channel {
  36         struct kref refcount;
  37         unsigned int id;
  38         struct mutex submitlock;
  39         void __iomem *regs;
  40         struct device *dev;
  41         struct host1x_cdma cdma;
  42 };
  43
  44 /* channel list operations */
  45 int host1x_channel_list_init(struct host1x_channel_list *chlist,
  46                              unsigned int num_channels);
  47 void host1x_channel_list_free(struct host1x_channel_list *chlist);
  48 struct host1x_channel *host1x_channel_get_index(struct host1x *host,
  49                                                 unsigned int index);
  50
  51 #endif