linux-kernel - Re: [Q] How to tell we're using the KMS (during suspend/resume) outside the graphics driver

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Date:	Tue, 6 Apr 2010 09:47:50 +0200
From:	Rafał Miłecki <zajec5@...il.com>
To:	Matthew Garrett <mjg59@...f.ucam.org>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>,
	Pauli Nieminen <suokkos@...il.com>,
	Paul Mundt <lethal@...ux-sh.org>,
	Luca Tettamanti <kronos.it@...il.com>,
	Linux PCI <linux-pci@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	pm list <linux-pm@...ts.linux-foundation.org>,
	dri-devel@...ts.sourceforge.net
Subject: Re: [Q] How to tell we're using the KMS (during suspend/resume) 
	outside the graphics driver

2010/3/10 Matthew Garrett <mjg59@...f.ucam.org>:
> On Wed, Mar 10, 2010 at 10:15:26PM +0100, Rafael J. Wysocki wrote:
>> On Wednesday 10 March 2010, Matthew Garrett wrote:
>> > As far as the ACPI video driver goes, acpi_get_physical_pci_device()
>> > will give you something to work with.
>>
>> Hmm.  Did you mean acpi_get_physical_device()?
>
> Ah, no, acpi_get_pci_dev.

So, AFAIU acpi_get_pci_dev will give me pointer to struct pci_dev of
video card, yes?

There is some path I could use then:

struct pci_dev {
    .....
    struct pci_driver *driver;	/* which driver has allocated this device */
    .....
}

struct pci_driver {
    .....
    struct device_driver	driver;
    .....
}

Finally, struct device_driver is defined in device.h. Should I add flag
bool is_kms
to this struct then?

AFAIK we can not do anything with struct driver_private *p... Or is
there unified struct for video card drivers? We could then add flag
is_kms to some struct pointed by struct driver_private *p.

-- 
Rafał
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