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 <[email protected]> Acked-by: Kishon Vijay Abraham I <[email protected]> --- Changes in v3: * Pushed the function outside #ifdef CONFIG_PM_SLEEP. * Added more details to commit log. Changes in v2: * used a local dev pointer instead of dereferencing dev at multiple places. * dra7xx_pcie_stop_link before disabling clks in the shutdown path. drivers/pci/dwc/pci-dra7xx.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/pci/dwc/pci-dra7xx.c b/drivers/pci/dwc/pci-dra7xx.c index 0f9adf2..ec8f842 100644 --- a/drivers/pci/dwc/pci-dra7xx.c +++ b/drivers/pci/dwc/pci-dra7xx.c @@ -794,6 +794,19 @@ static int dra7xx_pcie_resume_noirq(struct device *dev) } #endif +void dra7xx_pcie_shutdown(struct platform_device *pdev) +{ + struct dra7xx_pcie *dra7xx = dev_get_drvdata(&pdev->dev); + int ret; + + ret = pm_runtime_put_sync(&pdev->dev); + if (ret < 0) + dev_dbg(&pdev->dev, "pm_runtime_put_sync failed\n"); + + pm_runtime_disable(&pdev->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 +820,6 @@ static int dra7xx_pcie_resume_noirq(struct device *dev) .suppress_bind_attrs = true, .pm = &dra7xx_pcie_pm_ops, }, + .shutdown = dra7xx_pcie_shutdown, }; builtin_platform_driver_probe(dra7xx_pcie_driver, dra7xx_pcie_probe); -- 1.9.1
