From mboxrd@z Thu Jan 1 00:00:00 1970 From: Suravee Suthikulpanit Subject: [V2 PATCH 2/2] ata: ahci_platform: Add ACPI _CLS matching Date: Mon, 5 Jan 2015 15:11:15 -0600 Message-ID: <1420492275-6878-3-git-send-email-Suravee.Suthikulpanit@amd.com> References: <1420492275-6878-1-git-send-email-Suravee.Suthikulpanit@amd.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1420492275-6878-1-git-send-email-Suravee.Suthikulpanit@amd.com> Sender: linux-kernel-owner@vger.kernel.org To: rjw@rjwysocki.net, lenb@kernel.org, hdegoede@redhat.com, tj@kernel.org, arnd@arndb.de, mjg59@srcf.ucam.org, grant.likely@linaro.org Cc: hanjun.guo@linaro.org, al.stone@linaro.org, graeme.gregory@linaro.org, leo.duran@amd.com, linux-ide@vger.kernel.org, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, linaro-acpi@lists.linaro.org, Suravee Suthikulpanit List-Id: linux-acpi@vger.kernel.org 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. Acked-by: Tejun Heo Signed-off-by: Suravee Suthikulpanit --- drivers/ata/Kconfig | 2 +- drivers/ata/ahci_platform.c | 3 +++ 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig index a3a1360..edca892 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 18d5398..ae66974 100644 --- a/drivers/ata/ahci_platform.c +++ b/drivers/ata/ahci_platform.c @@ -71,12 +71,15 @@ static const struct of_device_id ahci_of_match[] = { }; MODULE_DEVICE_TABLE(of, ahci_of_match); +static const struct acpi_device_cls ahci_cls = {0x01, 0x06, 0x01}; + static struct platform_driver ahci_driver = { .probe = ahci_probe, .remove = ata_platform_remove_one, .driver = { .name = "ahci", .of_match_table = ahci_of_match, + .acpi_match_cls = &ahci_cls, .pm = &ahci_pm_ops, }, }; -- 1.9.3