drivers/gpu/host1x/channel.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Tegra host1x Channel
   4  *
   5  * Copyright (c) 2010-2013, NVIDIA Corporation.
   6  */
   7
   8 #ifndef __HOST1X_CHANNEL_H
   9 #define __HOST1X_CHANNEL_H
  10
  11 #include <linux/io.h>
  12 #include <linux/kref.h>
  13 #include <linux/mutex.h>
  14
  15 #include "cdma.h"
  16
  17 struct host1x;
  18 struct host1x_channel;
  19
  20 struct host1x_channel_list {
  21         struct host1x_channel *channels;
  22
  23         struct mutex lock;
  24         unsigned long *allocated_channels;
  25 };
  26
  27 struct host1x_channel {
  28         struct kref refcount;
  29         unsigned int id;
  30         struct mutex submitlock;
  31         void __iomem *regs;
  32         struct host1x_client *client;
  33         struct device *dev;
  34         struct host1x_cdma cdma;
  35 };
  36
  37 /* channel list operations */
  38 int host1x_channel_list_init(struct host1x_channel_list *chlist,
  39                              unsigned int num_channels);
  40 void host1x_channel_list_free(struct host1x_channel_list *chlist);
  41 struct host1x_channel *host1x_channel_get_index(struct host1x *host,
  42                                                 unsigned int index);
  43 void host1x_channel_stop_all(struct host1x *host);
  44
  45 #endif