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 * FIXME: resolve with the i915 version
24 */
25
26 #include "psb_drv.h"
27
28 struct opregion_header {
29 u8 signature[16];
30 u32 size;
31 u32 opregion_ver;
32 u8 bios_ver[32];
33 u8 vbios_ver[16];
34 u8 driver_ver[16];
35 u32 mboxes;
36 u8 reserved[164];
37 } __packed;
38
39 struct opregion_apci {
40 /*FIXME: add it later*/
41 } __packed;
42
43 struct opregion_swsci {
44 /*FIXME: add it later*/
45 } __packed;
46
47 struct opregion_acpi {
48 /*FIXME: add it later*/
49 } __packed;
50
gma_intel_opregion_init(struct drm_device * dev)51 int gma_intel_opregion_init(struct drm_device *dev)
52 {
53 struct drm_psb_private *dev_priv = dev->dev_private;
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 return -ENOTSUPP;
63
64 base = ioremap(opregion_phy, 8*1024);
65 if (!base)
66 return -ENOMEM;
67
68 lid_state = base + 0x01ac;
69
70 dev_priv->lid_state = lid_state;
71 dev_priv->lid_last_state = readl(lid_state);
72 return 0;
73 }
74
gma_intel_opregion_exit(struct drm_device * dev)75 int gma_intel_opregion_exit(struct drm_device *dev)
76 {
77 struct drm_psb_private *dev_priv = dev->dev_private;
78 if (dev_priv->lid_state)
79 iounmap(dev_priv->lid_state);
80 return 0;
81 }
82