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dcb.h
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1 #ifndef __NVBIOS_DCB_H__
2 #define __NVBIOS_DCB_H__
3 
4 struct nouveau_bios;
5 
6 enum dcb_output_type {
7  DCB_OUTPUT_ANALOG = 0x0,
8  DCB_OUTPUT_TV = 0x1,
9  DCB_OUTPUT_TMDS = 0x2,
10  DCB_OUTPUT_LVDS = 0x3,
11  DCB_OUTPUT_DP = 0x6,
12  DCB_OUTPUT_EOL = 0xe,
13  DCB_OUTPUT_UNUSED = 0xf,
14  DCB_OUTPUT_ANY = -1,
15 };
16 
17 struct dcb_output {
18  int index; /* may not be raw dcb index if merging has happened */
19  enum dcb_output_type type;
20  uint8_t i2c_index;
21  uint8_t heads;
22  uint8_t connector;
23  uint8_t bus;
24  uint8_t location;
25  uint8_t or;
26  bool duallink_possible;
27  union {
28  struct sor_conf {
29  int link;
30  } sorconf;
31  struct {
32  int maxfreq;
33  } crtconf;
34  struct {
35  struct sor_conf sor;
36  bool use_straps_for_mode;
37  bool use_acpi_for_edid;
38  bool use_power_scripts;
39  } lvdsconf;
40  struct {
41  bool has_component_output;
42  } tvconf;
43  struct {
44  struct sor_conf sor;
45  int link_nr;
46  int link_bw;
47  } dpconf;
48  struct {
49  struct sor_conf sor;
50  int slave_addr;
51  } tmdsconf;
52  };
53  bool i2c_upper_default;
54 };
55 
56 u16 dcb_table(struct nouveau_bios *, u8 *ver, u8 *hdr, u8 *ent, u8 *len);
57 u16 dcb_outp(struct nouveau_bios *, u8 idx, u8 *ver, u8 *len);
58 int dcb_outp_foreach(struct nouveau_bios *, void *data, int (*exec)
59  (struct nouveau_bios *, void *, int index, u16 entry));
60 
61 
62 /* BIT 'U'/'d' table encoder subtables have hashes matching them to
63  * a particular set of encoders.
64  *
65  * This function returns true if a particular DCB entry matches.
66  */
67 static inline bool
68 dcb_hash_match(struct dcb_output *dcb, u32 hash)
69 {
70  if ((hash & 0x000000f0) != (dcb->location << 4))
71  return false;
72  if ((hash & 0x0000000f) != dcb->type)
73  return false;
74  if (!(hash & (dcb->or << 16)))
75  return false;
76 
77  switch (dcb->type) {
78  case DCB_OUTPUT_TMDS:
79  case DCB_OUTPUT_LVDS:
80  case DCB_OUTPUT_DP:
81  if (hash & 0x00c00000) {
82  if (!(hash & (dcb->sorconf.link << 22)))
83  return false;
84  }
85  default:
86  return true;
87  }
88 }
89 
90 #endif
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