diff options
| author | Valentine Barshak <valentine.barshak@cogentembedded.com> | 2013-12-04 17:33:35 +0100 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2013-12-10 00:24:37 +0100 |
| commit | fb178d8b2fab3f2a9f203c13ffe80cfd6e01bdf1 (patch) | |
| tree | 5d6c1a088da4b1ce64eaa1d26d8a0a4e53940232 | |
| parent | PCI: rcar: Fix rcar_pci_probe() return value check (diff) | |
| download | linux-fb178d8b2fab3f2a9f203c13ffe80cfd6e01bdf1.tar.xz linux-fb178d8b2fab3f2a9f203c13ffe80cfd6e01bdf1.zip | |
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 <valentine.barshak@cogentembedded.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
| -rw-r--r-- | drivers/pci/host/pci-rcar-gen2.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/pci/host/pci-rcar-gen2.c b/drivers/pci/host/pci-rcar-gen2.c index 96d118242ae2..ceec147baec3 100644 --- a/drivers/pci/host/pci-rcar-gen2.c +++ b/drivers/pci/host/pci-rcar-gen2.c @@ -17,6 +17,7 @@ #include <linux/module.h> #include <linux/pci.h> #include <linux/platform_device.h> +#include <linux/pm_runtime.h> #include <linux/slab.h> /* 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); } |