Blame view

kernel/linux-rt-4.4.41/drivers/gpu/drm/nouveau/nvkm/engine/disp/outp.c 2.58 KB
5113f6f70   김현기   kernel add
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
  /*
   * Copyright 2014 Red Hat Inc.
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the "Software"),
   * to deal in the Software without restriction, including without limitation
   * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   * and/or sell copies of the Software, and to permit persons to whom the
   * Software is furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
   * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
   * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
   * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
   * OTHER DEALINGS IN THE SOFTWARE.
   *
   * Authors: Ben Skeggs
   */
  #include "outp.h"
  
  #include <subdev/bios.h>
  #include <subdev/bios/dcb.h>
  #include <subdev/i2c.h>
  
  void
  nvkm_output_fini(struct nvkm_output *outp)
  {
  	if (outp->func->fini)
  		outp->func->fini(outp);
  }
  
  void
  nvkm_output_init(struct nvkm_output *outp)
  {
  	if (outp->func->init)
  		outp->func->init(outp);
  }
  
  void
  nvkm_output_del(struct nvkm_output **poutp)
  {
  	struct nvkm_output *outp = *poutp;
  	if (outp && !WARN_ON(!outp->func)) {
  		if (outp->func->dtor)
  			*poutp = outp->func->dtor(outp);
  		kfree(*poutp);
  		*poutp = NULL;
  	}
  }
  
  void
  nvkm_output_ctor(const struct nvkm_output_func *func, struct nvkm_disp *disp,
  		 int index, struct dcb_output *dcbE, struct nvkm_output *outp)
  {
  	struct nvkm_i2c *i2c = disp->engine.subdev.device->i2c;
  
  	outp->func = func;
  	outp->disp = disp;
  	outp->index = index;
  	outp->info = *dcbE;
  	outp->i2c = nvkm_i2c_bus_find(i2c, dcbE->i2c_index);
  	outp->or = ffs(outp->info.or) - 1;
  
  	OUTP_DBG(outp, "type %02x loc %d or %d link %d con %x "
  		       "edid %x bus %d head %x",
  		 outp->info.type, outp->info.location, outp->info.or,
  		 outp->info.type >= 2 ? outp->info.sorconf.link : 0,
  		 outp->info.connector, outp->info.i2c_index,
  		 outp->info.bus, outp->info.heads);
  }
  
  int
  nvkm_output_new_(const struct nvkm_output_func *func,
  		 struct nvkm_disp *disp, int index, struct dcb_output *dcbE,
  		 struct nvkm_output **poutp)
  {
  	if (!(*poutp = kzalloc(sizeof(**poutp), GFP_KERNEL)))
  		return -ENOMEM;
  
  	nvkm_output_ctor(func, disp, index, dcbE, *poutp);
  	return 0;
  }