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6ee73861 BS |
1 | #include <linux/pci.h> |
2 | #include <linux/acpi.h> | |
3 | #include <acpi/acpi_drivers.h> | |
4 | #include <acpi/acpi_bus.h> | |
5 | ||
6 | #include "drmP.h" | |
7 | #include "drm.h" | |
8 | #include "drm_sarea.h" | |
9 | #include "drm_crtc_helper.h" | |
10 | #include "nouveau_drv.h" | |
11 | #include "nouveau_drm.h" | |
12 | #include "nv50_display.h" | |
13 | ||
14 | #define NOUVEAU_DSM_SUPPORTED 0x00 | |
15 | #define NOUVEAU_DSM_SUPPORTED_FUNCTIONS 0x00 | |
16 | ||
17 | #define NOUVEAU_DSM_ACTIVE 0x01 | |
18 | #define NOUVEAU_DSM_ACTIVE_QUERY 0x00 | |
19 | ||
20 | #define NOUVEAU_DSM_LED 0x02 | |
21 | #define NOUVEAU_DSM_LED_STATE 0x00 | |
22 | #define NOUVEAU_DSM_LED_OFF 0x10 | |
23 | #define NOUVEAU_DSM_LED_STAMINA 0x11 | |
24 | #define NOUVEAU_DSM_LED_SPEED 0x12 | |
25 | ||
26 | #define NOUVEAU_DSM_POWER 0x03 | |
27 | #define NOUVEAU_DSM_POWER_STATE 0x00 | |
28 | #define NOUVEAU_DSM_POWER_SPEED 0x01 | |
29 | #define NOUVEAU_DSM_POWER_STAMINA 0x02 | |
30 | ||
31 | static int nouveau_dsm(struct drm_device *dev, int func, int arg, int *result) | |
32 | { | |
33 | static char muid[] = { | |
34 | 0xA0, 0xA0, 0x95, 0x9D, 0x60, 0x00, 0x48, 0x4D, | |
35 | 0xB3, 0x4D, 0x7E, 0x5F, 0xEA, 0x12, 0x9F, 0xD4, | |
36 | }; | |
37 | ||
38 | struct pci_dev *pdev = dev->pdev; | |
39 | struct acpi_handle *handle; | |
40 | struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; | |
41 | struct acpi_object_list input; | |
42 | union acpi_object params[4]; | |
43 | union acpi_object *obj; | |
44 | int err; | |
45 | ||
46 | handle = DEVICE_ACPI_HANDLE(&pdev->dev); | |
47 | ||
48 | if (!handle) | |
49 | return -ENODEV; | |
50 | ||
51 | input.count = 4; | |
52 | input.pointer = params; | |
53 | params[0].type = ACPI_TYPE_BUFFER; | |
54 | params[0].buffer.length = sizeof(muid); | |
55 | params[0].buffer.pointer = (char *)muid; | |
56 | params[1].type = ACPI_TYPE_INTEGER; | |
57 | params[1].integer.value = 0x00000102; | |
58 | params[2].type = ACPI_TYPE_INTEGER; | |
59 | params[2].integer.value = func; | |
60 | params[3].type = ACPI_TYPE_INTEGER; | |
61 | params[3].integer.value = arg; | |
62 | ||
63 | err = acpi_evaluate_object(handle, "_DSM", &input, &output); | |
64 | if (err) { | |
65 | NV_INFO(dev, "failed to evaluate _DSM: %d\n", err); | |
66 | return err; | |
67 | } | |
68 | ||
69 | obj = (union acpi_object *)output.pointer; | |
70 | ||
71 | if (obj->type == ACPI_TYPE_INTEGER) | |
72 | if (obj->integer.value == 0x80000002) | |
73 | return -ENODEV; | |
74 | ||
75 | if (obj->type == ACPI_TYPE_BUFFER) { | |
76 | if (obj->buffer.length == 4 && result) { | |
77 | *result = 0; | |
78 | *result |= obj->buffer.pointer[0]; | |
79 | *result |= (obj->buffer.pointer[1] << 8); | |
80 | *result |= (obj->buffer.pointer[2] << 16); | |
81 | *result |= (obj->buffer.pointer[3] << 24); | |
82 | } | |
83 | } | |
84 | ||
85 | kfree(output.pointer); | |
86 | return 0; | |
87 | } | |
88 | ||
89 | int nouveau_hybrid_setup(struct drm_device *dev) | |
90 | { | |
91 | int result; | |
92 | ||
13876c6e | 93 | if (nouveau_dsm(dev, NOUVEAU_DSM_POWER, NOUVEAU_DSM_POWER_STATE, |
6ee73861 BS |
94 | &result)) |
95 | return -ENODEV; | |
96 | ||
97 | NV_INFO(dev, "_DSM hardware status gave 0x%x\n", result); | |
98 | ||
13876c6e MG |
99 | if (result) { /* Ensure that the external GPU is enabled */ |
100 | nouveau_dsm(dev, NOUVEAU_DSM_LED, NOUVEAU_DSM_LED_SPEED, NULL); | |
101 | nouveau_dsm(dev, NOUVEAU_DSM_POWER, NOUVEAU_DSM_POWER_SPEED, | |
102 | NULL); | |
103 | } else { /* Stamina mode - disable the external GPU */ | |
6ee73861 BS |
104 | nouveau_dsm(dev, NOUVEAU_DSM_LED, NOUVEAU_DSM_LED_STAMINA, |
105 | NULL); | |
106 | nouveau_dsm(dev, NOUVEAU_DSM_POWER, NOUVEAU_DSM_POWER_STAMINA, | |
107 | NULL); | |
6ee73861 BS |
108 | } |
109 | ||
110 | return 0; | |
111 | } | |
112 | ||
113 | bool nouveau_dsm_probe(struct drm_device *dev) | |
114 | { | |
115 | int support = 0; | |
116 | ||
117 | if (nouveau_dsm(dev, NOUVEAU_DSM_SUPPORTED, | |
118 | NOUVEAU_DSM_SUPPORTED_FUNCTIONS, &support)) | |
119 | return false; | |
120 | ||
121 | if (!support) | |
122 | return false; | |
123 | ||
124 | return true; | |
125 | } |