Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757442Ab0KLBts (ORCPT ); Thu, 11 Nov 2010 20:49:48 -0500 Received: from novprvlin0050.provo.novell.com ([137.65.248.33]:28386 "EHLO novprvlin0050.provo.novell.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756147Ab0KLBtr (ORCPT ); Thu, 11 Nov 2010 20:49:47 -0500 Message-Id: <4CDD37E40200002300023BFA@novprvlin0050.provo.novell.com> X-Mailer: Novell GroupWise Internet Agent 8.0.2 Date: Thu, 11 Nov 2010 18:49:40 -0700 From: "Joey Lee" To: Cc: , , , , , , , , , , , , , , , Subject: Re: [PATCH] Add Intel GMA500(Poulsbo) Stub Driver Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 6119 Lines: 188 Hi Rui, First, thank's for your review and take care. 於 五，2010-11-12 於 09:31 +0800，Zhang Rui 提到： > Hi, Lee, > > there are several regressions caused by this patch, > http://marc.info/?l=linux-acpi&m=128872402020412&w=2 > http://marc.info/?l=linux-acpi&m=128858111022621&w=2 > > Yes, We can fix it by "select INPUT if ACPI"/"select > VIDEO_OUTPUT_CONTROL if ACPI". > But IMO, STUB_POULSBO should not select ACPI_VIDEO at all, > what do you think? > Yes, I agreed. We can just remove the _select ACPI_VIDEO if ACPI_ because user should select it when they want to use. If CONFIG_ACPI_VIDEO doesn't select, the stub poulsbo just do _not_ thing but will have no any bad thing. So, let's direct remove it from Kconfig. Should I submit patch again? Thank's Joey Lee > thanks, > rui > > On Wed, 2010-11-03 at 09:19 +0800, Zhang Rui wrote: > > Hi, Lee, > > > > Sorry I missed this thread. > > > > On Wed, 2010-10-20 at 13:51 +0800, Lee, Chun-Yi wrote: > > > 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. > > > > > If you want the acpi backlight control, why not set CONFIG_ACPI_VIDEO > > driver directly? > > The reason why i915 driver selects ACPI_VIDEO is that it needs some > > cooperation between these two drivers during initialization, or else the > > system may hang. > > > > thanks, > > rui > > > > > Signed-off-by: Lee, Chun-Yi > > > --- > > > drivers/gpu/Makefile | 2 +- > > > drivers/gpu/stub/Kconfig | 13 +++++++++ > > > drivers/gpu/stub/Makefile | 1 + > > > drivers/gpu/stub/poulsbo.c | 63 ++++++++++++++++++++++++++++++++++++++++++++ > > > drivers/video/Kconfig | 2 + > > > 5 files changed, 80 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..8f5a540 > > > --- /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..d8aa636 > > > --- /dev/null > > > +++ b/drivers/gpu/stub/poulsbo.c > > > @@ -0,0 +1,63 @@ > > > +/* > > > + * Intel Poulsbo Stub driver > > > + * > > > + * Copyright (C) 2010 Novell > > > + * > > > + * 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 > > > +#include > > > +#include > > > + > > > +#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 "); > > > +MODULE_DESCRIPTION("Poulsbo Stub Driver"); > > > +MODULE_LICENSE("GPL"); > > > + > > > +MODULE_DEVICE_TABLE(pci, pciidlist); > > > 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 > > > > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/