Commit a393d897 authored by Jia Hongtao's avatar Jia Hongtao Committed by Kumar Gala
Browse files

powerpc/fsl-pci: Add PCI controller ATMU PM support 



Power supply for PCI controller ATMU registers is off when system go to
deep-sleep state. So ATMU registers should be re-setup during PCI
controllers resume from sleep.

Signed-off-by: default avatarJia Hongtao <B38951@freescale.com>
Signed-off-by: default avatarLi Yang <leoli@freescale.com>
Signed-off-by: default avatarKumar Gala <galak@kernel.crashing.org>
parent b567d1c7

arch/powerpc/sysdev/fsl_pci.c

+35 −2
Original line number Diff line number Diff line
@@ -89,7 +89,7 @@ static int fsl_pci_dma_set_mask(struct device *dev, u64 dma_mask) 
	return 0;

}



static int __init setup_one_atmu(struct ccsr_pci __iomem *pci,

static int setup_one_atmu(struct ccsr_pci __iomem *pci,

	unsigned int index, const struct resource *res,

	resource_size_t offset)

{
@@ -126,7 +126,7 @@ static int __init setup_one_atmu(struct ccsr_pci __iomem *pci, 
}



/* atmu setup for fsl pci/pcie controller */

static void __init setup_pci_atmu(struct pci_controller *hose,

static void setup_pci_atmu(struct pci_controller *hose,

				  struct resource *rsrc)

{

	struct ccsr_pci __iomem *pci;
@@ -902,9 +902,42 @@ static int __devinit fsl_pci_probe(struct platform_device *pdev) 
	return 0;

}



#ifdef CONFIG_PM

static int fsl_pci_resume(struct device *dev)

{

	struct pci_controller *hose;

	struct resource pci_rsrc;



	hose = pci_find_hose_for_OF_device(dev->of_node);

	if (!hose)

		return -ENODEV;



	if (of_address_to_resource(dev->of_node, 0, &pci_rsrc)) {

		dev_err(dev, "Get pci register base failed.");

		return -ENODEV;

	}



	setup_pci_atmu(hose, &pci_rsrc);



	return 0;

}



static const struct dev_pm_ops pci_pm_ops = {

	.resume = fsl_pci_resume,

};



#define PCI_PM_OPS (&pci_pm_ops)



#else



#define PCI_PM_OPS NULL



#endif



static struct platform_driver fsl_pci_driver = {

	.driver = {

		.name = "fsl-pci",

		.pm = PCI_PM_OPS,

		.of_match_table = pci_ids,

	},

	.probe = fsl_pci_probe,