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gpu: Add Intel GMA500(Poulsbo) Stub Driver

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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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2
drivers/gpu/Makefile
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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.

1
drivers/gpu/stub/Makefile Normal file
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@ -0,0 +1 @@
obj-$(CONFIG_STUB_POULSBO) += poulsbo.o

64
drivers/gpu/stub/poulsbo.c Normal file
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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);

2
drivers/video/Kconfig
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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