linux-kernel - [PATCH v2 1/2] PCI: Add HXT vendor ID and ACS quirk

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Date:   Wed, 7 Nov 2018 15:24:12 +0800
From:   Shunyong Yang <shunyong.yang@...-semitech.com>
To:     <bhelgaas@...gle.com>
CC:     <okaya@...nel.org>, <linux-pci@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        Shunyong Yang <shunyong.yang@...-semitech.com>,
        Joey Zheng <yu.zheng@...-semitech.com>
Subject: [PATCH v2 1/2] PCI: Add HXT vendor ID and ACS quirk

Add the HXT vendor ID to pci_ids.h and use it in quirks. As the
design of HXT SD4800 ACS feature is the same as QCOM QDF2xxx,
pci_quirk_qcom_rp_acs() is reused for SD4800 quirk.

cc: Joey Zheng <yu.zheng@...-semitech.com>
Reviewed-by: Sinan Kaya <okaya@...nel.org>
Signed-off-by: Shunyong Yang <shunyong.yang@...-semitech.com>

---
v2:
  Add Reviewed-by: Sinan Kaya.

v1:
  Initial version.
---

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 4700d24e5d55..1e00ef6a88f4 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -4495,6 +4495,8 @@ static int pci_quirk_mf_endpoint_acs(struct pci_dev *dev, u16 acs_flags)
 	/* QCOM QDF2xxx root ports */
 	{ PCI_VENDOR_ID_QCOM, 0x0400, pci_quirk_qcom_rp_acs },
 	{ PCI_VENDOR_ID_QCOM, 0x0401, pci_quirk_qcom_rp_acs },
+	/* HXT SD4800 root ports. The ACS design is same as QCOM QDF2xxx */
+	{ PCI_VENDOR_ID_HXT, 0x0401, pci_quirk_qcom_rp_acs },
 	/* Intel PCH root ports */
 	{ PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_intel_pch_acs },
 	{ PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_intel_spt_pch_acs },
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index 69f0abe1ba1a..e60a6bc38298 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -2565,6 +2565,8 @@
 
 #define PCI_VENDOR_ID_HYGON		0x1d94
 
+#define PCI_VENDOR_ID_HXT		0x1dbf
+
 #define PCI_VENDOR_ID_TEKRAM		0x1de1
 #define PCI_DEVICE_ID_TEKRAM_DC290	0xdc29
 
-- 
1.8.3.1