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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2019-07-14 19:23:58 +0300
committerBin Meng <bmeng.cn@gmail.com>2019-08-09 22:24:02 +0800
commite3be52ceac7fab098c47d1b7fd2f1456e8e43f7e (patch)
tree53345b8bca02c55060f680be0f4ea4e469ba66b2
parentddd2a4244c26068ae1a4e3161b21b738a8bec46e (diff)
x86: acpi: Enable ACPI companion for Intel iDMA 32-bit
ACPI has a capability to specify DMA parameters for DMA channel consumers. To enable this for Intel Edison, describe GP DMA device in ACPI table in order to get an ACPI handle to it in OS. This works in conjunction with CSRT, which must be in align with DSDT. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
-rw-r--r--arch/x86/include/asm/arch-tangier/acpi/southcluster.asl22
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/x86/include/asm/arch-tangier/acpi/southcluster.asl b/arch/x86/include/asm/arch-tangier/acpi/southcluster.asl
index 8b5b709045..b8b783b82e 100644
--- a/arch/x86/include/asm/arch-tangier/acpi/southcluster.asl
+++ b/arch/x86/include/asm/arch-tangier/acpi/southcluster.asl
@@ -421,6 +421,28 @@ Device (PCI0)
}
}
}
+
+ Device (GDMA)
+ {
+ Name (_ADR, 0x00150000)
+ Name (_HID, "808611A2")
+ Name (_UID, Zero)
+
+ Method (_STA, 0, NotSerialized)
+ {
+ Return (STA_VISIBLE)
+ }
+
+ Method (_CRS, 0, Serialized)
+ {
+ Name (RBUF, ResourceTemplate ()
+ {
+ Memory32Fixed(ReadWrite, 0xFF192000, 0x00001000)
+ Interrupt(ResourceConsumer, Level, ActiveHigh, Shared, ,, ) { 32 }
+ })
+ Return (RBUF)
+ }
+ }
}
Device (FLIS)