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authorLee, Chun-Yi <joeyli.kernel@gmail.com>2010-10-20 13:51:19 +0800
committerDave Airlie <airlied@redhat.com>2010-10-26 11:00:13 +1000
commite26fd1199ebab0d469fc3e037da5932d382f0669 (patch)
tree1346180916600ba8ee7dc9d8beb44d163fb8f1bc /drivers/gpu/stub
parentb7d8cce5b558e0c0aa6898c9865356481598b46d (diff)
downloadop-kernel-dev-e26fd1199ebab0d469fc3e037da5932d382f0669.zip
op-kernel-dev-e26fd1199ebab0d469fc3e037da5932d382f0669.tar.gz
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>
Diffstat (limited to 'drivers/gpu/stub')
-rw-r--r--drivers/gpu/stub/Kconfig13
-rw-r--r--drivers/gpu/stub/Makefile1
-rw-r--r--drivers/gpu/stub/poulsbo.c64
3 files changed, 78 insertions, 0 deletions
diff --git a/drivers/gpu/stub/Kconfig b/drivers/gpu/stub/Kconfig
new file mode 100644
index 0000000..742c423
--- /dev/null
+++ b/drivers/gpu/stub/Kconfig
@@ -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.
diff --git a/drivers/gpu/stub/Makefile b/drivers/gpu/stub/Makefile
new file mode 100644
index 0000000..cd940cc
--- /dev/null
+++ b/drivers/gpu/stub/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_STUB_POULSBO) += poulsbo.o
diff --git a/drivers/gpu/stub/poulsbo.c b/drivers/gpu/stub/poulsbo.c
new file mode 100644
index 0000000..7edfd27
--- /dev/null
+++ b/drivers/gpu/stub/poulsbo.c
@@ -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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