1 /*
2 * Copyright 2010 Intel Corporation
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 (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 *
23 */
24
25 #include "psb_drv.h"
26
27 struct opregion_header {
28 u8 signature[16];
29 u32 size;
30 u32 opregion_ver;
31 u8 bios_ver[32];
32 u8 vbios_ver[16];
33 u8 driver_ver[16];
34 u32 mboxes;
35 u8 reserved[164];
36 } __attribute__((packed));
37
38 struct opregion_apci {
39 /*FIXME: add it later*/
40 } __attribute__((packed));
41
42 struct opregion_swsci {
43 /*FIXME: add it later*/
44 } __attribute__((packed));
45
46 struct opregion_acpi {
47 /*FIXME: add it later*/
48 } __attribute__((packed));
49
psb_intel_opregion_init(struct drm_device * dev)50 int psb_intel_opregion_init(struct drm_device *dev)
51 {
52 struct drm_psb_private *dev_priv = dev->dev_private;
53 /*struct psb_intel_opregion * opregion = &dev_priv->opregion;*/
54 u32 opregion_phy;
55 void *base;
56 u32 *lid_state;
57
58 dev_priv->lid_state = NULL;
59
60 pci_read_config_dword(dev->pdev, 0xfc, &opregion_phy);
61 if (opregion_phy == 0) {
62 DRM_DEBUG("Opregion not supported, won't support lid-switch\n");
63 return -ENOTSUPP;
64 }
65 DRM_DEBUG("OpRegion detected at 0x%8x\n", opregion_phy);
66
67 base = ioremap(opregion_phy, 8*1024);
68 if (!base)
69 return -ENOMEM;
70
71 lid_state = base + 0x01ac;
72
73 DRM_DEBUG("Lid switch state 0x%08x\n", *lid_state);
74
75 dev_priv->lid_state = lid_state;
76 dev_priv->lid_last_state = *lid_state;
77 return 0;
78 }
79