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authorKeerthy <j-keerthy@ti.com>2017-09-20 10:54:15 +0530
committerBjorn Helgaas <bhelgaas@google.com>2017-10-11 14:30:13 -0500
commit9c049bea083fea21373b8baf51fe49acbe24e105 (patch)
tree2737c8a0159f5b7afdb87c3afb4a5055cecf0669 /drivers/pci
parent9e66317d3c92ddaab330c125dfe9d06eee268aff (diff)
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PCI: dra7xx: Add shutdown handler to cleanly turn off clocks
Add shutdown handler to cleanly turn off clocks. This will help in cases of kexec where in a new kernel can boot abruptly. Signed-off-by: Keerthy <j-keerthy@ti.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
Diffstat (limited to 'drivers/pci')
-rw-r--r--drivers/pci/dwc/pci-dra7xx.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/pci/dwc/pci-dra7xx.c b/drivers/pci/dwc/pci-dra7xx.c
index 34427a6a15af..d0848006945a 100644
--- a/drivers/pci/dwc/pci-dra7xx.c
+++ b/drivers/pci/dwc/pci-dra7xx.c
@@ -794,6 +794,22 @@ static int dra7xx_pcie_resume_noirq(struct device *dev)
}
#endif
+void dra7xx_pcie_shutdown(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct dra7xx_pcie *dra7xx = dev_get_drvdata(dev);
+ int ret;
+
+ dra7xx_pcie_stop_link(dra7xx->pci);
+
+ ret = pm_runtime_put_sync(dev);
+ if (ret < 0)
+ dev_dbg(dev, "pm_runtime_put_sync failed\n");
+
+ pm_runtime_disable(dev);
+ dra7xx_pcie_disable_phy(dra7xx);
+}
+
static const struct dev_pm_ops dra7xx_pcie_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(dra7xx_pcie_suspend, dra7xx_pcie_resume)
SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(dra7xx_pcie_suspend_noirq,
@@ -807,5 +823,6 @@ static struct platform_driver dra7xx_pcie_driver = {
.suppress_bind_attrs = true,
.pm = &dra7xx_pcie_pm_ops,
},
+ .shutdown = dra7xx_pcie_shutdown,
};
builtin_platform_driver_probe(dra7xx_pcie_driver, dra7xx_pcie_probe);