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Message-Id: <20230915184306.2374670-1-Frank.Li@nxp.com>
Date: Fri, 15 Sep 2023 14:43:04 -0400
From: Frank Li <Frank.Li@....com>
To: Minghuan Lian <minghuan.Lian@....com>,
Mingkai Hu <mingkai.hu@....com>, Roy Zang <roy.zang@....com>,
Lorenzo Pieralisi <lpieralisi@...nel.org>,
Krzysztof WilczyĆski <kw@...ux.com>,
Rob Herring <robh@...nel.org>,
Bjorn Helgaas <bhelgaas@...gle.com>,
linuxppc-dev@...ts.ozlabs.org (open list:PCI DRIVER FOR FREESCALE
LAYERSCAPE),
linux-pci@...r.kernel.org (open list:PCI DRIVER FOR FREESCALE
LAYERSCAPE),
linux-arm-kernel@...ts.infradead.org (moderated list:PCI DRIVER FOR
FREESCALE LAYERSCAPE), linux-kernel@...r.kernel.org (open list)
Cc: imx@...ts.linux.dev
Subject: [PATCH 1/3] PCI: layerscape: add function pointer for exit_from_l2()
Difference layerscape chip have not difference exit_from_l2() method.
Using function pointer for ls1028. It prepare for other layerscape
suspend/resume support.
Signed-off-by: Frank Li <Frank.Li@....com>
---
drivers/pci/controller/dwc/pci-layerscape.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/pci/controller/dwc/pci-layerscape.c b/drivers/pci/controller/dwc/pci-layerscape.c
index b931d597656f6..20c48c06e2248 100644
--- a/drivers/pci/controller/dwc/pci-layerscape.c
+++ b/drivers/pci/controller/dwc/pci-layerscape.c
@@ -39,6 +39,8 @@
struct ls_pcie_drvdata {
const u32 pf_off;
+ const struct dw_pcie_host_ops *ops;
+ void (*exit_from_l2)(struct dw_pcie_rp *pp);
bool pm_support;
};
@@ -180,6 +182,7 @@ static const struct ls_pcie_drvdata ls1021a_drvdata = {
static const struct ls_pcie_drvdata layerscape_drvdata = {
.pf_off = 0xc0000,
.pm_support = true,
+ .exit_from_l2 = ls_pcie_exit_from_l2,
};
static const struct of_device_id ls_pcie_of_match[] = {
@@ -213,7 +216,7 @@ static int ls_pcie_probe(struct platform_device *pdev)
pcie->drvdata = of_device_get_match_data(dev);
pci->dev = dev;
- pci->pp.ops = &ls_pcie_host_ops;
+ pci->pp.ops = pcie->drvdata->ops ? pcie->drvdata->ops : &ls_pcie_host_ops;
pcie->pci = pci;
@@ -251,7 +254,7 @@ static int ls_pcie_resume_noirq(struct device *dev)
if (!pcie->drvdata->pm_support)
return 0;
- ls_pcie_exit_from_l2(&pcie->pci->pp);
+ pcie->drvdata->exit_from_l2(&pcie->pci->pp);
return dw_pcie_resume_noirq(pcie->pci);
}
--
2.34.1
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