LXR linux/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
  27struct host1x;
  28struct host1x_channel;
  29
  30struct host1x_channel_list {
  31        struct host1x_channel *channels;
  32        unsigned long *allocated_channels;
  33};
  34
  35struct 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 */
  45int host1x_channel_list_init(struct host1x_channel_list *chlist,
  46                             unsigned int num_channels);
  47void host1x_channel_list_free(struct host1x_channel_list *chlist);
  48struct host1x_channel *host1x_channel_get_index(struct host1x *host,
  49                                                unsigned int index);
  50
  51#endif
  52