[RFC PATCH v2 1/3] PCI: rockchip: Add support for pcie wake irq
From: Jeffy Chen <hidden>
Date: 2017-08-17 12:05:51
Also in:
linux-pci, linux-rockchip, lkml
Subsystem:
arm/rockchip soc support, pci subsystem, the rest · Maintainers:
Heiko Stuebner, Bjorn Helgaas, Linus Torvalds
Add support for PCIE_WAKE pin in rockchip pcie driver.
Signed-off-by: Jeffy Chen <redacted>
---
Changes in v2:
Use dev_pm_set_dedicated_wake_irq
-- Suggested by Brian Norris [off-list ref]
drivers/pci/host/pcie-rockchip.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/drivers/pci/host/pcie-rockchip.c b/drivers/pci/host/pcie-rockchip.c
index 7bb9870f6d8c..c2b973c738fe 100644
--- a/drivers/pci/host/pcie-rockchip.c
+++ b/drivers/pci/host/pcie-rockchip.c@@ -36,6 +36,7 @@ #include <linux/pci_ids.h> #include <linux/phy/phy.h> #include <linux/platform_device.h> +#include <linux/pm_wakeirq.h> #include <linux/reset.h> #include <linux/regmap.h>
@@ -853,7 +854,6 @@ static void rockchip_pcie_legacy_int_handler(struct irq_desc *desc) chained_irq_exit(chip, desc); } - /** * rockchip_pcie_parse_dt - Parse Device Tree * @rockchip: PCIe port information
@@ -1018,6 +1018,14 @@ static int rockchip_pcie_parse_dt(struct rockchip_pcie *rockchip) return err; } + device_init_wakeup(dev, true); + irq = platform_get_irq_byname(pdev, "wake"); + if (irq >= 0) { + err = dev_pm_set_dedicated_wake_irq(dev, irq); + if (err) + dev_err(dev, "failed to setup PCIe wake IRQ\n"); + } + rockchip->vpcie3v3 = devm_regulator_get_optional(dev, "vpcie3v3"); if (IS_ERR(rockchip->vpcie3v3)) { if (PTR_ERR(rockchip->vpcie3v3) == -EPROBE_DEFER)
@@ -1524,6 +1532,9 @@ static int rockchip_pcie_remove(struct platform_device *pdev) struct device *dev = &pdev->dev; struct rockchip_pcie *rockchip = dev_get_drvdata(dev); + dev_pm_clear_wake_irq(dev); + device_init_wakeup(dev, false); + pci_stop_root_bus(rockchip->root_bus); pci_remove_root_bus(rockchip->root_bus); pci_unmap_iospace(rockchip->io);
--
2.11.0