[PATCH 4.19/5.4] PCI: Add function 0 DMA alias quirk for Glenfly Arise chip
From: WangYuli
Date: Fri Oct 18 2024 - 03:39:59 EST
[ Upstream commit 9246b487ab3c3b5993aae7552b7a4c541cc14a49 ]
Add DMA support for audio function of Glenfly Arise chip, which uses
Requester ID of function 0.
Link: https://lore.kernel.org/r/CA2BBD087345B6D1+20240823095708.3237375-1-wangyuli@xxxxxxxxxxxxx
Signed-off-by: SiyuLi <siyuli@xxxxxxxxxxx>
Signed-off-by: WangYuli <wangyuli@xxxxxxxxxxxxx>
[bhelgaas: lower-case hex to match local code, drop unused Device IDs]
Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Reviewed-by: Takashi Iwai <tiwai@xxxxxxx>
---
drivers/pci/quirks.c | 4 ++++
include/linux/pci_ids.h | 2 ++
2 files changed, 6 insertions(+)
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index bb5182089096..566bedc5836b 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -4042,6 +4042,10 @@ static void quirk_dma_func0_alias(struct pci_dev *dev)
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_RICOH, 0xe832, quirk_dma_func0_alias);
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_RICOH, 0xe476, quirk_dma_func0_alias);
+/* Some Glenfly chips use function 0 as the PCIe Requester ID for DMA */
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_GLENFLY, 0x3d40, quirk_dma_func0_alias);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_GLENFLY, 0x3d41, quirk_dma_func0_alias);
+
static void quirk_dma_func1_alias(struct pci_dev *dev)
{
if (PCI_FUNC(dev->devfn) != 1)
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index 91193284710f..5f996cf93c13 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -2647,6 +2647,8 @@
#define PCI_DEVICE_ID_DCI_PCCOM8 0x0002
#define PCI_DEVICE_ID_DCI_PCCOM2 0x0004
+#define PCI_VENDOR_ID_GLENFLY 0x6766
+
#define PCI_VENDOR_ID_INTEL 0x8086
#define PCI_DEVICE_ID_INTEL_EESSC 0x0008
#define PCI_DEVICE_ID_INTEL_PXHD_0 0x0320
--
2.45.2