82 lines
2.2 KiB
C
82 lines
2.2 KiB
C
/*
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* Copyright 2010 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* FIXME: resolve with the i915 version
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*/
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#include "psb_drv.h"
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struct opregion_header {
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u8 signature[16];
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u32 size;
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u32 opregion_ver;
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u8 bios_ver[32];
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u8 vbios_ver[16];
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u8 driver_ver[16];
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u32 mboxes;
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u8 reserved[164];
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} __packed;
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struct opregion_apci {
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/*FIXME: add it later*/
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} __packed;
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struct opregion_swsci {
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/*FIXME: add it later*/
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} __packed;
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struct opregion_acpi {
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/*FIXME: add it later*/
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} __packed;
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int gma_intel_opregion_init(struct drm_device *dev)
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{
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struct drm_psb_private *dev_priv = dev->dev_private;
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u32 opregion_phy;
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void *base;
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u32 *lid_state;
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dev_priv->lid_state = NULL;
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pci_read_config_dword(dev->pdev, 0xfc, &opregion_phy);
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if (opregion_phy == 0)
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return -ENOTSUPP;
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base = ioremap(opregion_phy, 8*1024);
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if (!base)
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return -ENOMEM;
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lid_state = base + 0x01ac;
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dev_priv->lid_state = lid_state;
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dev_priv->lid_last_state = readl(lid_state);
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return 0;
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}
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int gma_intel_opregion_exit(struct drm_device *dev)
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{
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struct drm_psb_private *dev_priv = dev->dev_private;
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if (dev_priv->lid_state)
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iounmap(dev_priv->lid_state);
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return 0;
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}
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