Messages in this thread | | | Date | Thu, 18 Dec 2014 10:02:35 +0100 | From | Hans de Goede <> | Subject | Re: [RFC PATCH 2/2] ata: ahci_platform: Add ACPI _CLS matching |
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Hi,
On 18-12-14 00:16, Suravee Suthikulpanit wrote: > From: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> > > 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@amd.com>
The ahci_platform changes done here look good to me:
Acked-by: Hans de Goede <hdegoede@redhat.com>
Regards,
Hans
> --- > drivers/ata/Kconfig | 2 +- > drivers/ata/ahci_platform.c | 10 ++++++++++ > 2 files changed, 11 insertions(+), 1 deletion(-) > > diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig > index cd4cccb..edb00c6 100644 > --- a/drivers/ata/Kconfig > +++ b/drivers/ata/Kconfig > @@ -48,7 +48,7 @@ config ATA_VERBOSE_ERROR > > config ATA_ACPI > bool "ATA ACPI Support" > - depends on ACPI && PCI > + depends on ACPI > default y > help > This option adds support for ATA-related ACPI objects. > diff --git a/drivers/ata/ahci_platform.c b/drivers/ata/ahci_platform.c > index 06f1d59..54568ec 100644 > --- a/drivers/ata/ahci_platform.c > +++ b/drivers/ata/ahci_platform.c > @@ -20,6 +20,9 @@ > #include <linux/platform_device.h> > #include <linux/libata.h> > #include <linux/ahci_platform.h> > +#ifdef CONFIG_ATA_ACPI > +#include <linux/acpi.h> > +#endif > #include "ahci.h" > > static const struct ata_port_info ahci_port_info = { > @@ -71,6 +74,10 @@ static const struct of_device_id ahci_of_match[] = { > }; > MODULE_DEVICE_TABLE(of, ahci_of_match); > > +#ifdef CONFIG_ATA_ACPI > +static const struct acpi_device_cls ahci_cls = {0x01, 0x06, 0x01}; > +#endif > + > static struct platform_driver ahci_driver = { > .probe = ahci_probe, > .remove = ata_platform_remove_one, > @@ -78,6 +85,9 @@ static struct platform_driver ahci_driver = { > .name = "ahci", > .owner = THIS_MODULE, > .of_match_table = ahci_of_match, > +#ifdef CONFIG_ATA_ACPI > + .acpi_cls = &ahci_cls, > +#endif > .pm = &ahci_pm_ops, > }, > }; >
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