@@ -433,6 +433,56 @@ static int __exit dra7xx_pcie_remove(struct platform_device *pdev)
return 0;
}
+#ifdef CONFIG_PM_SLEEP
+static int dra7xx_pcie_suspend_noirq(struct device *dev)
+{
+ struct dra7xx_pcie *dra7xx = dev_get_drvdata(dev);
+ int count = dra7xx->phy_count;
+
+ while (count--) {
+ phy_power_off(dra7xx->phy[count]);
+ phy_exit(dra7xx->phy[count]);
+ }
+
+ return 0;
+}
+
+static int dra7xx_pcie_resume_noirq(struct device *dev)
+{
+ struct dra7xx_pcie *dra7xx = dev_get_drvdata(dev);
+ int phy_count = dra7xx->phy_count;
+ int ret;
+ int i;
+
+ for (i = 0; i < phy_count; i++) {
+ ret = phy_init(dra7xx->phy[i]);
+ if (ret < 0)
+ goto err_phy;
+
+ ret = phy_power_on(dra7xx->phy[i]);
+ if (ret < 0) {
+ phy_exit(dra7xx->phy[i]);
+ goto err_phy;
+ }
+ }
+
+ return 0;
+
+err_phy:
+ while (--i >= 0) {
+ phy_power_off(dra7xx->phy[i]);
+ phy_exit(dra7xx->phy[i]);
+ }
+
+ return ret;
+}
+#endif
+
+static const struct dev_pm_ops dra7xx_pcie_pm_ops = {
+ SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(dra7xx_pcie_suspend_noirq,
+ dra7xx_pcie_resume_noirq)
+};
+
static const struct of_device_id of_dra7xx_pcie_match[] = {
{ .compatible = "ti,dra7-pcie", },
{},
@@ -444,6 +494,7 @@ static struct platform_driver dra7xx_pcie_driver = {
.driver = {
.name = "dra7-pcie",
.of_match_table = of_dra7xx_pcie_match,
+ .pm = &dra7xx_pcie_pm_ops,
},
};
Add PM support to pci-dra7xx so that PCI clocks can be disabled during suspend and enabled back during resume without affecting PCI functionality. Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> --- drivers/pci/host/pci-dra7xx.c | 51 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+)