[PATCH] Add Intel Poulsbo Stub Driver

Lee, Chun-Yi
2010-09-01T09:10:10Z

Currently, there have no 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.

Signed-off-by: Lee, Chun-Yi <jlee@novell.com>
---
drivers/gpu/Makefile | 2 +-
drivers/gpu/stub/Kconfig | 13 +++++++++
drivers/gpu/stub/Makefile | 1 +
drivers/gpu/stub/poulsbo.c | 64 ++++++++++++++++++++++++++++++++++++++++++++
drivers/video/Kconfig | 2 +
5 files changed, 81 insertions(+), 1 deletions(-)
create mode 100644 drivers/gpu/stub/Kconfig
create mode 100644 drivers/gpu/stub/Makefile
create mode 100644 drivers/gpu/stub/poulsbo.c

diff --git a/drivers/gpu/Makefile b/drivers/gpu/Makefile
index 30879df..cc92778 100644
--- a/drivers/gpu/Makefile
+++ b/drivers/gpu/Makefile
@@ -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
index 0000000..c564140
--- /dev/null
+++ b/drivers/gpu/stub/Kconfig
@@ -0,0 +1,13 @@
+config STUB_POULSBO
+ tristate "Intel Poulsbo Stub Driver"
+ default m
+ # 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 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..e18dc24
--- /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 <acpi/video.h>
+
+#define DRIVER_NAME "poulsbo"
+
+enum {
+ CHIP_PSB_8108 = 0,
+ CHIP_PSB_8109 = 1,
+};
+
+static struct pci_device_id 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_ALIAS("pci:v00008086d00008108sv*sd*bc*sc*i*");
+MODULE_ALIAS("pci:v00008086d00008109sv*sd*bc*sc*i*");
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 8b31fdf..8807ae5 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -17,6 +17,8 @@ source "drivers/gpu/vga/Kconfig"

source "drivers/gpu/drm/Kconfig"

+source "drivers/gpu/stub/Kconfig"
+
config VGASTATE
tristate
default n
--
1.6.0.2