diff options
Diffstat (limited to 'drivers/staging/gma500/psb_intel_opregion.c')
-rw-r--r-- | drivers/staging/gma500/psb_intel_opregion.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/drivers/staging/gma500/psb_intel_opregion.c b/drivers/staging/gma500/psb_intel_opregion.c new file mode 100644 index 000000000000..65e3e9b8dc16 --- /dev/null +++ b/drivers/staging/gma500/psb_intel_opregion.c @@ -0,0 +1,78 @@ +/* + * Copyright 2010 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + * + */ + +#include "psb_drv.h" + +struct opregion_header { + u8 signature[16]; + u32 size; + u32 opregion_ver; + u8 bios_ver[32]; + u8 vbios_ver[16]; + u8 driver_ver[16]; + u32 mboxes; + u8 reserved[164]; +} __attribute__((packed)); + +struct opregion_apci { + /*FIXME: add it later*/ +} __attribute__((packed)); + +struct opregion_swsci { + /*FIXME: add it later*/ +} __attribute__((packed)); + +struct opregion_acpi { + /*FIXME: add it later*/ +} __attribute__((packed)); + +int psb_intel_opregion_init(struct drm_device *dev) +{ + struct drm_psb_private *dev_priv = dev->dev_private; + /*struct psb_intel_opregion * opregion = &dev_priv->opregion;*/ + u32 opregion_phy; + void *base; + u32 *lid_state; + + dev_priv->lid_state = NULL; + + pci_read_config_dword(dev->pdev, 0xfc, &opregion_phy); + if (opregion_phy == 0) { + DRM_DEBUG("Opregion not supported, won't support lid-switch\n"); + return -ENOTSUPP; + } + DRM_DEBUG("OpRegion detected at 0x%8x\n", opregion_phy); + + base = ioremap(opregion_phy, 8*1024); + if (!base) + return -ENOMEM; + + lid_state = base + 0x01ac; + + DRM_DEBUG("Lid switch state 0x%08x\n", *lid_state); + + dev_priv->lid_state = lid_state; + dev_priv->lid_last_state = *lid_state; + return 0; +} |