1 /*
2 * Copyright 2012 Red Hat Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: Ben Skeggs
23 */
24 #include "priv.h"
25
26 static int
pwm_info(struct nvkm_therm * therm,int line)27 pwm_info(struct nvkm_therm *therm, int line)
28 {
29 struct nvkm_subdev *subdev = &therm->subdev;
30 struct nvkm_device *device = subdev->device;
31 u32 gpio = nvkm_rd32(device, 0x00d610 + (line * 0x04));
32
33 switch (gpio & 0x000000c0) {
34 case 0x00000000: /* normal mode, possibly pwm forced off by us */
35 case 0x00000040: /* nvio special */
36 switch (gpio & 0x0000001f) {
37 case 0x00: return 2;
38 case 0x19: return 1;
39 case 0x1c: return 0;
40 case 0x1e: return 2;
41 default:
42 break;
43 }
44 break;
45 default:
46 break;
47 }
48
49 nvkm_error(subdev, "GPIO %d unknown PWM: %08x\n", line, gpio);
50 return -ENODEV;
51 }
52
53 int
gf119_fan_pwm_ctrl(struct nvkm_therm * therm,int line,bool enable)54 gf119_fan_pwm_ctrl(struct nvkm_therm *therm, int line, bool enable)
55 {
56 struct nvkm_device *device = therm->subdev.device;
57 u32 data = enable ? 0x00000040 : 0x00000000;
58 int indx = pwm_info(therm, line);
59 if (indx < 0)
60 return indx;
61 else if (indx < 2)
62 nvkm_mask(device, 0x00d610 + (line * 0x04), 0x000000c0, data);
63 /* nothing to do for indx == 2, it seems hardwired to PTHERM */
64 return 0;
65 }
66
67 int
gf119_fan_pwm_get(struct nvkm_therm * therm,int line,u32 * divs,u32 * duty)68 gf119_fan_pwm_get(struct nvkm_therm *therm, int line, u32 *divs, u32 *duty)
69 {
70 struct nvkm_device *device = therm->subdev.device;
71 int indx = pwm_info(therm, line);
72 if (indx < 0)
73 return indx;
74 else if (indx < 2) {
75 if (nvkm_rd32(device, 0x00d610 + (line * 0x04)) & 0x00000040) {
76 *divs = nvkm_rd32(device, 0x00e114 + (indx * 8));
77 *duty = nvkm_rd32(device, 0x00e118 + (indx * 8));
78 return 0;
79 }
80 } else if (indx == 2) {
81 *divs = nvkm_rd32(device, 0x0200d8) & 0x1fff;
82 *duty = nvkm_rd32(device, 0x0200dc) & 0x1fff;
83 return 0;
84 }
85
86 return -EINVAL;
87 }
88
89 int
gf119_fan_pwm_set(struct nvkm_therm * therm,int line,u32 divs,u32 duty)90 gf119_fan_pwm_set(struct nvkm_therm *therm, int line, u32 divs, u32 duty)
91 {
92 struct nvkm_device *device = therm->subdev.device;
93 int indx = pwm_info(therm, line);
94 if (indx < 0)
95 return indx;
96 else if (indx < 2) {
97 nvkm_wr32(device, 0x00e114 + (indx * 8), divs);
98 nvkm_wr32(device, 0x00e118 + (indx * 8), duty | 0x80000000);
99 } else if (indx == 2) {
100 nvkm_mask(device, 0x0200d8, 0x1fff, divs); /* keep the high bits */
101 nvkm_wr32(device, 0x0200dc, duty | 0x40000000);
102 }
103 return 0;
104 }
105
106 int
gf119_fan_pwm_clock(struct nvkm_therm * therm,int line)107 gf119_fan_pwm_clock(struct nvkm_therm *therm, int line)
108 {
109 struct nvkm_device *device = therm->subdev.device;
110 int indx = pwm_info(therm, line);
111 if (indx < 0)
112 return 0;
113 else if (indx < 2)
114 return (device->crystal * 1000) / 20;
115 else
116 return device->crystal * 1000 / 10;
117 }
118
119 void
gf119_therm_init(struct nvkm_therm * therm)120 gf119_therm_init(struct nvkm_therm *therm)
121 {
122 struct nvkm_device *device = therm->subdev.device;
123
124 g84_sensor_setup(therm);
125
126 /* enable fan tach, count revolutions per-second */
127 nvkm_mask(device, 0x00e720, 0x00000003, 0x00000002);
128 if (therm->fan->tach.func != DCB_GPIO_UNUSED) {
129 nvkm_mask(device, 0x00d79c, 0x000000ff, therm->fan->tach.line);
130 nvkm_wr32(device, 0x00e724, device->crystal * 1000);
131 nvkm_mask(device, 0x00e720, 0x00000001, 0x00000001);
132 }
133 nvkm_mask(device, 0x00e720, 0x00000002, 0x00000000);
134 }
135
136 static const struct nvkm_therm_func
137 gf119_therm = {
138 .init = gf119_therm_init,
139 .fini = g84_therm_fini,
140 .pwm_ctrl = gf119_fan_pwm_ctrl,
141 .pwm_get = gf119_fan_pwm_get,
142 .pwm_set = gf119_fan_pwm_set,
143 .pwm_clock = gf119_fan_pwm_clock,
144 .temp_get = g84_temp_get,
145 .fan_sense = gt215_therm_fan_sense,
146 .program_alarms = nvkm_therm_program_alarms_polling,
147 };
148
149 int
gf119_therm_new(struct nvkm_device * device,enum nvkm_subdev_type type,int inst,struct nvkm_therm ** ptherm)150 gf119_therm_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
151 struct nvkm_therm **ptherm)
152 {
153 return nvkm_therm_new_(&gf119_therm, device, type, inst, ptherm);
154 }
155