1 /* $NetBSD: nouveau_nvkm_engine_disp_dacnv50.c,v 1.3 2021/12/18 23:45:35 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 #include <sys/cdefs.h>
27 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_engine_disp_dacnv50.c,v 1.3 2021/12/18 23:45:35 riastradh Exp $");
28
29 #include "ior.h"
30
31 #include <subdev/timer.h>
32
33 static void
nv50_dac_clock(struct nvkm_ior * dac)34 nv50_dac_clock(struct nvkm_ior *dac)
35 {
36 struct nvkm_device *device = dac->disp->engine.subdev.device;
37 const u32 doff = nv50_ior_base(dac);
38 nvkm_mask(device, 0x614280 + doff, 0x07070707, 0x00000000);
39 }
40
41 int
nv50_dac_sense(struct nvkm_ior * dac,u32 loadval)42 nv50_dac_sense(struct nvkm_ior *dac, u32 loadval)
43 {
44 struct nvkm_device *device = dac->disp->engine.subdev.device;
45 const u32 doff = nv50_ior_base(dac);
46
47 dac->func->power(dac, false, true, false, false, false);
48
49 nvkm_wr32(device, 0x61a00c + doff, 0x00100000 | loadval);
50 mdelay(9);
51 udelay(500);
52 loadval = nvkm_mask(device, 0x61a00c + doff, 0xffffffff, 0x00000000);
53
54 dac->func->power(dac, false, false, false, false, false);
55 if (!(loadval & 0x80000000))
56 return -ETIMEDOUT;
57
58 return (loadval & 0x38000000) >> 27;
59 }
60
61 static void
nv50_dac_power_wait(struct nvkm_device * device,const u32 doff)62 nv50_dac_power_wait(struct nvkm_device *device, const u32 doff)
63 {
64 nvkm_msec(device, 2000,
65 if (!(nvkm_rd32(device, 0x61a004 + doff) & 0x80000000))
66 break;
67 );
68 }
69
70 void
nv50_dac_power(struct nvkm_ior * dac,bool normal,bool pu,bool data,bool vsync,bool hsync)71 nv50_dac_power(struct nvkm_ior *dac, bool normal, bool pu,
72 bool data, bool vsync, bool hsync)
73 {
74 struct nvkm_device *device = dac->disp->engine.subdev.device;
75 const u32 doff = nv50_ior_base(dac);
76 const u32 shift = normal ? 0 : 16;
77 const u32 state = 0x80000000 | (0x00000040 * ! pu |
78 0x00000010 * ! data |
79 0x00000004 * ! vsync |
80 0x00000001 * ! hsync) << shift;
81 const u32 field = 0xc0000000 | (0x00000055 << shift);
82
83 nv50_dac_power_wait(device, doff);
84 nvkm_mask(device, 0x61a004 + doff, field, state);
85 nv50_dac_power_wait(device, doff);
86 }
87
88 static void
nv50_dac_state(struct nvkm_ior * dac,struct nvkm_ior_state * state)89 nv50_dac_state(struct nvkm_ior *dac, struct nvkm_ior_state *state)
90 {
91 struct nvkm_device *device = dac->disp->engine.subdev.device;
92 const u32 coff = dac->id * 8 + (state == &dac->arm) * 4;
93 u32 ctrl = nvkm_rd32(device, 0x610b58 + coff);
94
95 state->proto_evo = (ctrl & 0x00000f00) >> 8;
96 switch (state->proto_evo) {
97 case 0: state->proto = CRT; break;
98 default:
99 state->proto = UNKNOWN;
100 break;
101 }
102
103 state->head = ctrl & 0x00000003;
104 }
105
106 static const struct nvkm_ior_func
107 nv50_dac = {
108 .state = nv50_dac_state,
109 .power = nv50_dac_power,
110 .sense = nv50_dac_sense,
111 .clock = nv50_dac_clock,
112 };
113
114 int
nv50_dac_new(struct nvkm_disp * disp,int id)115 nv50_dac_new(struct nvkm_disp *disp, int id)
116 {
117 return nvkm_ior_new_(&nv50_dac, disp, DAC, id);
118 }
119
120 int
nv50_dac_cnt(struct nvkm_disp * disp,unsigned long * pmask)121 nv50_dac_cnt(struct nvkm_disp *disp, unsigned long *pmask)
122 {
123 struct nvkm_device *device = disp->engine.subdev.device;
124 *pmask = (nvkm_rd32(device, 0x610184) & 0x00700000) >> 20;
125 return 3;
126 }
127