linux-kernel - [PATCH v4 5/5] PCI: epf-mhi: Enable HDMA for SA8775P SoC

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Message-Id: <20240306-dw-hdma-v4-5-9fed506e95be@linaro.org>
Date: Wed, 06 Mar 2024 15:52:01 +0530
From: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To: Jingoo Han <jingoohan1@...il.com>, 
 Gustavo Pimentel <gustavo.pimentel@...opsys.com>, 
 Lorenzo Pieralisi <lpieralisi@...nel.org>, 
 Krzysztof Wilczyński <kw@...ux.com>, 
 Rob Herring <robh@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>, 
 Marek Vasut <marek.vasut+renesas@...il.com>, 
 Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>, 
 Kishon Vijay Abraham I <kishon@...nel.org>
Cc: Serge Semin <fancer.lancer@...il.com>, linux-pci@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-renesas-soc@...r.kernel.org, 
 linux-arm-msm@...r.kernel.org, mhi@...ts.linux.dev, 
 Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>, 
 Mrinmay Sarkar <quic_msarkar@...cinc.com>, 
 Siddharth Vadapalli <s-vadapalli@...com>, Frank Li <Frank.Li@....com>
Subject: [PATCH v4 5/5] PCI: epf-mhi: Enable HDMA for SA8775P SoC

From: Mrinmay Sarkar <quic_msarkar@...cinc.com>

SA8775P SoC supports Hyper DMA (HDMA) DMA Engine present in the DWC IP. So,
let's enable it in the EPF driver so that the DMA Engine APIs can be used
for data transfer.

Signed-off-by: Mrinmay Sarkar <quic_msarkar@...cinc.com>
[mani: reworded commit message]
Reviewed-by: Siddharth Vadapalli <s-vadapalli@...com>
Reviewed-by: Frank Li <Frank.Li@....com>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
---
 drivers/pci/endpoint/functions/pci-epf-mhi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/pci/endpoint/functions/pci-epf-mhi.c b/drivers/pci/endpoint/functions/pci-epf-mhi.c
index 2c54d80107cf..570c1d1fb12e 100644
--- a/drivers/pci/endpoint/functions/pci-epf-mhi.c
+++ b/drivers/pci/endpoint/functions/pci-epf-mhi.c
@@ -137,6 +137,7 @@ static const struct pci_epf_mhi_ep_info sa8775p_info = {
 	.epf_flags = PCI_BASE_ADDRESS_MEM_TYPE_32,
 	.msi_count = 32,
 	.mru = 0x8000,
+	.flags = MHI_EPF_USE_DMA,
 };
 
 struct pci_epf_mhi {

-- 
2.25.1