From patchwork Thu Nov 1 02:19:08 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: powerpc/fsl-pci: Add PCI controller ATMU PM support Date: Wed, 31 Oct 2012 16:19:08 -0000 From: Hongtao Jia X-Patchwork-Id: 196074 Message-Id: <1351736348-26754-1-git-send-email-B38951@freescale.com> To: , Cc: B07421@freescale.com, b38951@freescale.com 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: Jia Hongtao Signed-off-by: Li Yang --- arch/powerpc/sysdev/fsl_pci.c | 21 +++++++++++++++++++-- 1 files changed, 19 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/sysdev/fsl_pci.c b/arch/powerpc/sysdev/fsl_pci.c index ffb93ae..793a017 100644 --- a/arch/powerpc/sysdev/fsl_pci.c +++ b/arch/powerpc/sysdev/fsl_pci.c @@ -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; @@ -902,12 +902,29 @@ static int __devinit fsl_pci_probe(struct platform_device *pdev) return 0; } +#ifdef CONFIG_SUSPEND +static int fsl_pci_resume(struct platform_device *pdev) +{ + struct pci_controller *hose; + struct resource pci_rsrc; + + hose = pci_find_hose_for_OF_device(pdev->dev.of_node); + of_address_to_resource(pdev->dev.of_node, 0, &pci_rsrc); + setup_pci_atmu(hose, &pci_rsrc); + + return 0; +} +#endif + static struct platform_driver fsl_pci_driver = { .driver = { .name = "fsl-pci", .of_match_table = pci_ids, }, .probe = fsl_pci_probe, +#ifdef CONFIG_SUSPEND + .resume = fsl_pci_resume, +#endif }; static int __init fsl_pci_init(void)