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Message-Id: <20231016161738.2854352-1-Frank.Li@nxp.com>
Date: Mon, 16 Oct 2023 12:17:36 -0400
From: Frank Li <Frank.Li@....com>
To: lpieralisi@...nel.org
Cc: Frank.li@....com, bhelgaas@...gle.com, helgaas@...nel.org,
imx@...ts.linux.dev, kw@...ux.com,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
linux-pci@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
minghuan.Lian@....com, mingkai.hu@....com, robh@...nel.org,
roy.zang@....com
Subject: [PATCH v2 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>
---
Notes:
Change from v1 to v2
- change subject 'a' to 'A'
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 b931d597656f..20c48c06e224 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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