linux-kernel - Re: [PATCH 2/2] ata: ahci_platform: Add ACPI

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Message-ID: <20141225203202.GF22951@htj.dyndns.org>
Date:	Thu, 25 Dec 2014 15:32:02 -0500
From:	Tejun Heo <tj@...nel.org>
To:	Suravee Suthikulpanit <Suravee.Suthikulpanit@....com>
Cc:	rjw@...ysocki.net, lenb@...nel.org, hdegoede@...hat.com,
	arnd@...db.de, mjg59@...f.ucam.org, hanjun.guo@...aro.org,
	al.stone@...aro.org, graeme.gregory@...aro.org, leo.duran@....com,
	linux-ide@...r.kernel.org, linux-acpi@...r.kernel.org,
	linux-kernel@...r.kernel.org, linaro-acpi@...ts.linaro.org
Subject: Re: [PATCH 2/2] ata: ahci_platform: Add ACPI _CLS matching

On Fri, Dec 19, 2014 at 02:13:08PM -0600, Suravee Suthikulpanit wrote:
> This patch adds ACPI supports for AHCI platform driver, which uses _CLS
> method to match the device.
> 
> The following is an example of ASL structure in DSDT for a SATA controller,
> which contains _CLS package to be matched by the ahci_platform driver:
> 
>   Device (AHC0) // AHCI Controller
>   {
>     Name(_HID, "AMDI0600")
>     Name (_CCA, 1)
>     Name (_CLS, Package (3)
>     {
>       0x01, // Base Class: Mass Storage
>       0x06, // Sub-Class: serial ATA
>       0x01, // Interface: AHCI
>     })
>     Name (_CRS, ResourceTemplate ()
>     {
>       Memory32Fixed (ReadWrite, 0xE0300000, 0x00010000)
>       Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive,,,) { 387 }
>     })
>   }
> 
> Also, since ATA driver should not require PCI support for ATA_ACPI,
> this patch removes dependency in the driver/ata/Kconfig.
> 
> Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@....com>

Acked-by: Tejun Heo <tj@...nel.org>

Please feel free to route this as you see fit.  Let me know if this
should go through libata.

Thanks.

-- 
tejun
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