From fb178d8b2fab3f2a9f203c13ffe80cfd6e01bdf1 Mon Sep 17 00:00:00 2001 From: Valentine Barshak Date: Wed, 4 Dec 2013 20:33:35 +0400 Subject: [PATCH] PCI: rcar: Add runtime PM support If runtime PM is enabled in the kernel config, the PCI clocks are not forced on at start-up, and thus, are never enabled. Use pm_runtime_get_sync() to enable the clocks. While at it, use dev_info() instead of pr_info() since now we have the device pointer available in the PCI setup callback. Signed-off-by: Valentine Barshak Signed-off-by: Bjorn Helgaas --- drivers/pci/host/pci-rcar-gen2.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/pci/host/pci-rcar-gen2.c b/drivers/pci/host/pci-rcar-gen2.c index 96d1182..ceec147 100644 --- a/drivers/pci/host/pci-rcar-gen2.c +++ b/drivers/pci/host/pci-rcar-gen2.c @@ -17,6 +17,7 @@ #include #include #include +#include #include /* AHB-PCI Bridge PCI communication registers */ @@ -77,6 +78,7 @@ #define RCAR_PCI_NR_CONTROLLERS 3 struct rcar_pci_priv { + struct device *dev; void __iomem *reg; struct resource io_res; struct resource mem_res; @@ -169,8 +171,11 @@ static int __init rcar_pci_setup(int nr, struct pci_sys_data *sys) void __iomem *reg = priv->reg; u32 val; + pm_runtime_enable(priv->dev); + pm_runtime_get_sync(priv->dev); + val = ioread32(reg + RCAR_PCI_UNIT_REV_REG); - pr_info("PCI: bus%u revision %x\n", sys->busnr, val); + dev_info(priv->dev, "PCI: bus%u revision %x\n", sys->busnr, val); /* Disable Direct Power Down State and assert reset */ val = ioread32(reg + RCAR_USBCTR_REG) & ~RCAR_USBCTR_DIRPD; @@ -301,6 +306,7 @@ static int __init rcar_pci_probe(struct platform_device *pdev) priv->irq = platform_get_irq(pdev, 0); priv->reg = reg; + priv->dev = &pdev->dev; return rcar_pci_add_controller(priv); } -- 2.7.4