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>
---
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 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..4879f9b 100644
--- a/drivers/ata/ahci_platform.c
+++ b/drivers/ata/ahci_platform.c
@@ -71,6 +71,8 @@ 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,
@@ -78,6 +80,7 @@ static struct platform_driver ahci_driver = {
.name = "ahci",
.owner = THIS_MODULE,
.of_match_table = ahci_of_match,
+ .acpi_cls = &ahci_cls,
.pm = &ahci_pm_ops,
},
};
--
1.9.3
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