1 | /* $NetBSD: nouveau_engine_disp_piornv50.c,v 1.1.1.1 2014/08/06 12:36:24 riastradh Exp $ */ |
2 | |
3 | /* |
4 | * Copyright 2012 Red Hat Inc. |
5 | * |
6 | * Permission is hereby granted, free of charge, to any person obtaining a |
7 | * copy of this software and associated documentation files (the "Software"), |
8 | * to deal in the Software without restriction, including without limitation |
9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
10 | * and/or sell copies of the Software, and to permit persons to whom the |
11 | * Software is furnished to do so, subject to the following conditions: |
12 | * |
13 | * The above copyright notice and this permission notice shall be included in |
14 | * all copies or substantial portions of the Software. |
15 | * |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
19 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
20 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
21 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
22 | * OTHER DEALINGS IN THE SOFTWARE. |
23 | * |
24 | * Authors: Ben Skeggs |
25 | */ |
26 | |
27 | #include <sys/cdefs.h> |
28 | __KERNEL_RCSID(0, "$NetBSD: nouveau_engine_disp_piornv50.c,v 1.1.1.1 2014/08/06 12:36:24 riastradh Exp $" ); |
29 | |
30 | #include <core/os.h> |
31 | #include <core/class.h> |
32 | |
33 | #include <subdev/bios.h> |
34 | #include <subdev/bios/dcb.h> |
35 | #include <subdev/timer.h> |
36 | #include <subdev/i2c.h> |
37 | |
38 | #include "nv50.h" |
39 | |
40 | /****************************************************************************** |
41 | * DisplayPort |
42 | *****************************************************************************/ |
43 | static struct nouveau_i2c_port * |
44 | nv50_pior_dp_find(struct nouveau_disp *disp, struct dcb_output *outp) |
45 | { |
46 | struct nouveau_i2c *i2c = nouveau_i2c(disp); |
47 | return i2c->find_type(i2c, NV_I2C_TYPE_EXTAUX(outp->extdev)); |
48 | } |
49 | |
50 | static int |
51 | nv50_pior_dp_pattern(struct nouveau_disp *disp, struct dcb_output *outp, |
52 | int head, int pattern) |
53 | { |
54 | struct nouveau_i2c_port *port; |
55 | int ret = -EINVAL; |
56 | |
57 | port = nv50_pior_dp_find(disp, outp); |
58 | if (port) { |
59 | if (port->func->pattern) |
60 | ret = port->func->pattern(port, pattern); |
61 | else |
62 | ret = 0; |
63 | } |
64 | |
65 | return ret; |
66 | } |
67 | |
68 | static int |
69 | nv50_pior_dp_lnk_ctl(struct nouveau_disp *disp, struct dcb_output *outp, |
70 | int head, int lane_nr, int link_bw, bool enh) |
71 | { |
72 | struct nouveau_i2c_port *port; |
73 | int ret = -EINVAL; |
74 | |
75 | port = nv50_pior_dp_find(disp, outp); |
76 | if (port && port->func->lnk_ctl) |
77 | ret = port->func->lnk_ctl(port, lane_nr, link_bw, enh); |
78 | |
79 | return ret; |
80 | } |
81 | |
82 | static int |
83 | nv50_pior_dp_drv_ctl(struct nouveau_disp *disp, struct dcb_output *outp, |
84 | int head, int lane, int vsw, int pre) |
85 | { |
86 | struct nouveau_i2c_port *port; |
87 | int ret = -EINVAL; |
88 | |
89 | port = nv50_pior_dp_find(disp, outp); |
90 | if (port) { |
91 | if (port->func->drv_ctl) |
92 | ret = port->func->drv_ctl(port, lane, vsw, pre); |
93 | else |
94 | ret = 0; |
95 | } |
96 | |
97 | return ret; |
98 | } |
99 | |
100 | const struct nouveau_dp_func |
101 | nv50_pior_dp_func = { |
102 | .pattern = nv50_pior_dp_pattern, |
103 | .lnk_ctl = nv50_pior_dp_lnk_ctl, |
104 | .drv_ctl = nv50_pior_dp_drv_ctl, |
105 | }; |
106 | |
107 | /****************************************************************************** |
108 | * General PIOR handling |
109 | *****************************************************************************/ |
110 | int |
111 | nv50_pior_power(struct nv50_disp_priv *priv, int or, u32 data) |
112 | { |
113 | const u32 stat = data & NV50_DISP_PIOR_PWR_STATE; |
114 | const u32 soff = (or * 0x800); |
115 | nv_wait(priv, 0x61e004 + soff, 0x80000000, 0x00000000); |
116 | nv_mask(priv, 0x61e004 + soff, 0x80000101, 0x80000000 | stat); |
117 | nv_wait(priv, 0x61e004 + soff, 0x80000000, 0x00000000); |
118 | return 0; |
119 | } |
120 | |
121 | int |
122 | nv50_pior_mthd(struct nouveau_object *object, u32 mthd, void *args, u32 size) |
123 | { |
124 | struct nv50_disp_priv *priv = (void *)object->engine; |
125 | const u8 type = (mthd & NV50_DISP_PIOR_MTHD_TYPE) >> 12; |
126 | const u8 or = (mthd & NV50_DISP_PIOR_MTHD_OR); |
127 | u32 *data = args; |
128 | int ret; |
129 | |
130 | if (size < sizeof(u32)) |
131 | return -EINVAL; |
132 | |
133 | mthd &= ~NV50_DISP_PIOR_MTHD_TYPE; |
134 | mthd &= ~NV50_DISP_PIOR_MTHD_OR; |
135 | switch (mthd) { |
136 | case NV50_DISP_PIOR_PWR: |
137 | ret = priv->pior.power(priv, or, data[0]); |
138 | priv->pior.type[or] = type; |
139 | break; |
140 | default: |
141 | return -EINVAL; |
142 | } |
143 | |
144 | return ret; |
145 | } |
146 | |