1 /* $NetBSD: nouveau_nvkm_subdev_therm_gf119.c,v 1.3 2021/12/18 23:45:41 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_subdev_therm_gf119.c,v 1.3 2021/12/18 23:45:41 riastradh Exp $");
28
29 #include "priv.h"
30
31 static int
pwm_info(struct nvkm_therm * therm,int line)32 pwm_info(struct nvkm_therm *therm, int line)
33 {
34 struct nvkm_subdev *subdev = &therm->subdev;
35 struct nvkm_device *device = subdev->device;
36 u32 gpio = nvkm_rd32(device, 0x00d610 + (line * 0x04));
37
38 switch (gpio & 0x000000c0) {
39 case 0x00000000: /* normal mode, possibly pwm forced off by us */
40 case 0x00000040: /* nvio special */
41 switch (gpio & 0x0000001f) {
42 case 0x00: return 2;
43 case 0x19: return 1;
44 case 0x1c: return 0;
45 case 0x1e: return 2;
46 default:
47 break;
48 }
49 default:
50 break;
51 }
52
53 nvkm_error(subdev, "GPIO %d unknown PWM: %08x\n", line, gpio);
54 return -ENODEV;
55 }
56
57 int
gf119_fan_pwm_ctrl(struct nvkm_therm * therm,int line,bool enable)58 gf119_fan_pwm_ctrl(struct nvkm_therm *therm, int line, bool enable)
59 {
60 struct nvkm_device *device = therm->subdev.device;
61 u32 data = enable ? 0x00000040 : 0x00000000;
62 int indx = pwm_info(therm, line);
63 if (indx < 0)
64 return indx;
65 else if (indx < 2)
66 nvkm_mask(device, 0x00d610 + (line * 0x04), 0x000000c0, data);
67 /* nothing to do for indx == 2, it seems hardwired to PTHERM */
68 return 0;
69 }
70
71 int
gf119_fan_pwm_get(struct nvkm_therm * therm,int line,u32 * divs,u32 * duty)72 gf119_fan_pwm_get(struct nvkm_therm *therm, int line, u32 *divs, u32 *duty)
73 {
74 struct nvkm_device *device = therm->subdev.device;
75 int indx = pwm_info(therm, line);
76 if (indx < 0)
77 return indx;
78 else if (indx < 2) {
79 if (nvkm_rd32(device, 0x00d610 + (line * 0x04)) & 0x00000040) {
80 *divs = nvkm_rd32(device, 0x00e114 + (indx * 8));
81 *duty = nvkm_rd32(device, 0x00e118 + (indx * 8));
82 return 0;
83 }
84 } else if (indx == 2) {
85 *divs = nvkm_rd32(device, 0x0200d8) & 0x1fff;
86 *duty = nvkm_rd32(device, 0x0200dc) & 0x1fff;
87 return 0;
88 }
89
90 return -EINVAL;
91 }
92
93 int
gf119_fan_pwm_set(struct nvkm_therm * therm,int line,u32 divs,u32 duty)94 gf119_fan_pwm_set(struct nvkm_therm *therm, int line, u32 divs, u32 duty)
95 {
96 struct nvkm_device *device = therm->subdev.device;
97 int indx = pwm_info(therm, line);
98 if (indx < 0)
99 return indx;
100 else if (indx < 2) {
101 nvkm_wr32(device, 0x00e114 + (indx * 8), divs);
102 nvkm_wr32(device, 0x00e118 + (indx * 8), duty | 0x80000000);
103 } else if (indx == 2) {
104 nvkm_mask(device, 0x0200d8, 0x1fff, divs); /* keep the high bits */
105 nvkm_wr32(device, 0x0200dc, duty | 0x40000000);
106 }
107 return 0;
108 }
109
110 int
gf119_fan_pwm_clock(struct nvkm_therm * therm,int line)111 gf119_fan_pwm_clock(struct nvkm_therm *therm, int line)
112 {
113 struct nvkm_device *device = therm->subdev.device;
114 int indx = pwm_info(therm, line);
115 if (indx < 0)
116 return 0;
117 else if (indx < 2)
118 return (device->crystal * 1000) / 20;
119 else
120 return device->crystal * 1000 / 10;
121 }
122
123 void
gf119_therm_init(struct nvkm_therm * therm)124 gf119_therm_init(struct nvkm_therm *therm)
125 {
126 struct nvkm_device *device = therm->subdev.device;
127
128 g84_sensor_setup(therm);
129
130 /* enable fan tach, count revolutions per-second */
131 nvkm_mask(device, 0x00e720, 0x00000003, 0x00000002);
132 if (therm->fan->tach.func != DCB_GPIO_UNUSED) {
133 nvkm_mask(device, 0x00d79c, 0x000000ff, therm->fan->tach.line);
134 nvkm_wr32(device, 0x00e724, device->crystal * 1000);
135 nvkm_mask(device, 0x00e720, 0x00000001, 0x00000001);
136 }
137 nvkm_mask(device, 0x00e720, 0x00000002, 0x00000000);
138 }
139
140 static const struct nvkm_therm_func
141 gf119_therm = {
142 .init = gf119_therm_init,
143 .fini = g84_therm_fini,
144 .pwm_ctrl = gf119_fan_pwm_ctrl,
145 .pwm_get = gf119_fan_pwm_get,
146 .pwm_set = gf119_fan_pwm_set,
147 .pwm_clock = gf119_fan_pwm_clock,
148 .temp_get = g84_temp_get,
149 .fan_sense = gt215_therm_fan_sense,
150 .program_alarms = nvkm_therm_program_alarms_polling,
151 };
152
153 int
gf119_therm_new(struct nvkm_device * device,int index,struct nvkm_therm ** ptherm)154 gf119_therm_new(struct nvkm_device *device, int index,
155 struct nvkm_therm **ptherm)
156 {
157 return nvkm_therm_new_(&gf119_therm, device, index, ptherm);
158 }
159