mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-19 00:55:18 +00:00
0867b42113
This is an initial staging driver for the GMA500. It's been stripped out of the PVR drivers and crunched together from various bits of code and different kernels. Currently it's unaccelerated but still pretty snappy even compositing with the frame buffer X server. Lots of work is needed to rework the ttm and bo interfaces from being ripped out and then 2D acceleration wants putting back for framebuffer and somehow eventually via DRM. There is no support for the parts without open source userspace (video accelerators, 3D) as per kernel policy. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
78 lines
2.3 KiB
C
78 lines
2.3 KiB
C
/*
|
|
* 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;
|
|
}
|