gpu: Add Intel GMA500(Poulsbo) Stub Driver

Currently, there have no GMA500(Poulsbo) native video driver to support
intel opregion. So, use this stub driver to enable the acpi backlight
control sysfs entry files by requrest acpi_video_register.

[airlied: fix warnings]

Signed-off-by: Lee, Chun-Yi <jlee@novell.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Lee, Chun-Yi 2010-10-20 13:51:19 +08:00 committed by Dave Airlie
parent b7d8cce5b5
commit e26fd1199e
5 changed files with 81 additions and 1 deletions

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@ -1 +1 @@
obj-y += drm/ vga/
obj-y += drm/ vga/ stub/

13
drivers/gpu/stub/Kconfig Normal file
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@ -0,0 +1,13 @@
config STUB_POULSBO
tristate "Intel GMA500 Stub Driver"
depends on PCI
# Poulsbo stub depends on ACPI_VIDEO when ACPI is enabled
# but for select to work, need to select ACPI_VIDEO's dependencies, ick
select ACPI_VIDEO if ACPI
help
Choose this option if you have a system that has Intel GMA500
(Poulsbo) integrated graphics. If M is selected, the module will
be called Poulsbo. This driver is a stub driver for Poulsbo that
will call poulsbo.ko to enable the acpi backlight control sysfs
entry file because there have no poulsbo native driver can support
intel opregion.

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@ -0,0 +1 @@
obj-$(CONFIG_STUB_POULSBO) += poulsbo.o

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@ -0,0 +1,64 @@
/*
* Intel Poulsbo Stub driver
*
* Copyright (C) 2010 Novell <jlee@novell.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
*
*/
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/acpi.h>
#include <acpi/video.h>
#define DRIVER_NAME "poulsbo"
enum {
CHIP_PSB_8108 = 0,
CHIP_PSB_8109 = 1,
};
static DEFINE_PCI_DEVICE_TABLE(pciidlist) = {
{0x8086, 0x8108, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_PSB_8108}, \
{0x8086, 0x8109, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_PSB_8109}, \
{0, 0, 0}
};
static int poulsbo_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
return acpi_video_register();
}
static void poulsbo_remove(struct pci_dev *pdev)
{
acpi_video_unregister();
}
static struct pci_driver poulsbo_driver = {
.name = DRIVER_NAME,
.id_table = pciidlist,
.probe = poulsbo_probe,
.remove = poulsbo_remove,
};
static int __init poulsbo_init(void)
{
return pci_register_driver(&poulsbo_driver);
}
static void __exit poulsbo_exit(void)
{
pci_unregister_driver(&poulsbo_driver);
}
module_init(poulsbo_init);
module_exit(poulsbo_exit);
MODULE_AUTHOR("Lee, Chun-Yi <jlee@novell.com>");
MODULE_DESCRIPTION("Poulsbo Stub Driver");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(pci, pciidlist);

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@ -17,6 +17,8 @@ source "drivers/gpu/vga/Kconfig"
source "drivers/gpu/drm/Kconfig"
source "drivers/gpu/stub/Kconfig"
config VGASTATE
tristate
default n