Re: [V4 PATCH 2/2] ata: ahci_platform: Add ACPI _CLS matching
From: Tejun Heo
Date: Mon Mar 02 2015 - 11:41:15 EST
On Mon, Mar 02, 2015 at 02:27:20AM -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@xxxxxxx>
Looks good to me from the libata side.
Acked-by: Tejun Heo <tj@xxxxxxxxxx>
Please let me now if this needs to go through libata.
Thanks.
--
tejun
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