linux-kernel - [PATCH v4 3/4] PCI: epf-mhi: Add support for SA8775P

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Date:   Fri, 27 Oct 2023 19:03:11 +0530
From:   Mrinmay Sarkar <quic_msarkar@...cinc.com>
To:     agross@...nel.org, andersson@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        konrad.dybcio@...aro.org, mani@...nel.org
Cc:     quic_shazhuss@...cinc.com, quic_nitegupt@...cinc.com,
        quic_ramkri@...cinc.com, quic_nayiluri@...cinc.com,
        dmitry.baryshkov@...aro.org, robh@...nel.org,
        quic_krichai@...cinc.com, quic_vbadigan@...cinc.com,
        quic_parass@...cinc.com, quic_schintav@...cinc.com,
        Mrinmay Sarkar <quic_msarkar@...cinc.com>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Kishon Vijay Abraham I <kishon@...nel.org>,
        linux-pci@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        mhi@...ts.linux.dev
Subject: [PATCH v4 3/4] PCI: epf-mhi: Add support for SA8775P

Add support for Qualcomm Snapdragon SA8775P SoC to the EPF driver.
Reusing DID (0x0306) for SA8775P and it supports HDMA. Currently,
it has no fixed PCI class, so it is being advertised as
"PCI_CLASS_OTHERS".

Signed-off-by: Mrinmay Sarkar <quic_msarkar@...cinc.com>
---
 drivers/pci/endpoint/functions/pci-epf-mhi.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/drivers/pci/endpoint/functions/pci-epf-mhi.c b/drivers/pci/endpoint/functions/pci-epf-mhi.c
index b7b9d3e..23ea94e 100644
--- a/drivers/pci/endpoint/functions/pci-epf-mhi.c
+++ b/drivers/pci/endpoint/functions/pci-epf-mhi.c
@@ -114,6 +114,22 @@ static const struct pci_epf_mhi_ep_info sm8450_info = {
 	.flags = MHI_EPF_USE_DMA,
 };
 
+static struct pci_epf_header sa8775p_header = {
+	.vendorid = PCI_VENDOR_ID_QCOM,
+	.deviceid = 0x0306,               /* FIXME: Update deviceid for sa8775p EP */
+	.baseclass_code = PCI_CLASS_OTHERS,
+	.interrupt_pin = PCI_INTERRUPT_INTA,
+};
+
+static const struct pci_epf_mhi_ep_info sa8775p_info = {
+	.config = &mhi_v1_config,
+	.epf_header = &sa8775p_header,
+	.bar_num = BAR_0,
+	.epf_flags = PCI_BASE_ADDRESS_MEM_TYPE_32,
+	.msi_count = 32,
+	.mru = 0x8000,
+};
+
 struct pci_epf_mhi {
 	const struct pci_epc_features *epc_features;
 	const struct pci_epf_mhi_ep_info *info;
@@ -677,6 +693,7 @@ static int pci_epf_mhi_probe(struct pci_epf *epf,
 }
 
 static const struct pci_epf_device_id pci_epf_mhi_ids[] = {
+	{ .name = "sa8775p", .driver_data = (kernel_ulong_t)&sa8775p_info },
 	{ .name = "sdx55", .driver_data = (kernel_ulong_t)&sdx55_info },
 	{ .name = "sm8450", .driver_data = (kernel_ulong_t)&sm8450_info },
 	{},
-- 
2.7.4