[PATCH 4.19/5.4] PCI: Add function 0 DMA alias quirk for Glenfly Arise chip

[PATCH 4.19/5.4] PCI: Add function 0 DMA alias quirk for Glenfly Arise chip

[WangYuli]

[ 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@uniontech.com
Signed-off-by: SiyuLi <siyuli@glenfly.com>
Signed-off-by: WangYuli <wangyuli@uniontech.com>
[bhelgaas: lower-case hex to match local code, drop unused Device IDs]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
---
 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

Re: [PATCH 4.19/5.4] PCI: Add function 0 DMA alias quirk for Glenfly Arise chip

[Greg KH]

On Fri, Oct 18, 2024 at 03:37:49PM +0800, WangYuli wrote:
> [ 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@uniontech.com
> Signed-off-by: SiyuLi <siyuli@glenfly.com>
> Signed-off-by: WangYuli <wangyuli@uniontech.com>
> [bhelgaas: lower-case hex to match local code, drop unused Device IDs]
> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
> Reviewed-by: Takashi Iwai <tiwai@suse.de>
> ---
>  drivers/pci/quirks.c    | 4 ++++
>  include/linux/pci_ids.h | 2 ++
>  2 files changed, 6 insertions(+)

Now queued up, thanks.

greg k-h