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| author |   Keerthy <j-keerthy@ti.com> | 2017-09-20 10:54:15 +0530 |
|---|---|---|
| committer |   Bjorn Helgaas <bhelgaas@google.com> | 2017-10-11 14:30:13 -0500 |
| commit | 9c049bea083fea21373b8baf51fe49acbe24e105 (patch) | |
| tree | 2737c8a0159f5b7afdb87c3afb4a5055cecf0669 /drivers/pci | |
| parent | Linux 4.14-rc3 (diff) | |
| download | linux-dev-9c049bea083fea21373b8baf51fe49acbe24e105.tar.xz linux-dev-9c049bea083fea21373b8baf51fe49acbe24e105.zip | |
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.c | 17 |
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); |