gpu: Add Intel GMA500(Poulsbo) Stub Driver
authorLee, Chun-Yi <joeyli.kernel@gmail.com>
Wed, 20 Oct 2010 05:51:19 +0000 (13:51 +0800)
committerDave Airlie <airlied@redhat.com>
Tue, 26 Oct 2010 01:00:13 +0000 (11:00 +1000)
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>
drivers/gpu/Makefile
drivers/gpu/stub/Kconfig [new file with mode: 0644]
drivers/gpu/stub/Makefile [new file with mode: 0644]
drivers/gpu/stub/poulsbo.c [new file with mode: 0644]
drivers/video/Kconfig

index 30879df3daead6c3e208cfed0e8e7d191d31eaa9..cc9277885dd071b2da83edeae9250b6ea5985020 100644 (file)
@@ -1 +1 @@
-obj-y                  += drm/ vga/
+obj-y                  += drm/ vga/ stub/
diff --git a/drivers/gpu/stub/Kconfig b/drivers/gpu/stub/Kconfig
new file mode 100644 (file)
index 0000000..742c423
--- /dev/null
@@ -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 (file)
index 0000000..cd940cc
--- /dev/null
@@ -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 (file)
index 0000000..7edfd27
--- /dev/null
@@ -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);
index 8b31fdfefc98a69e7de101cacce2bbe6570a170f..8807ae5f8b219ca7aead5394f331302632834a6b 100644 (file)
@@ -17,6 +17,8 @@ source "drivers/gpu/vga/Kconfig"
 
 source "drivers/gpu/drm/Kconfig"
 
+source "drivers/gpu/stub/Kconfig"
+
 config VGASTATE
        tristate
        default n