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