diff options
| author | Jia Hongtao <B38951@freescale.com> | 2012-11-08 06:11:07 +0400 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2012-11-25 17:00:28 +0400 |
| commit | a393d8977acd834520357f951bb28ef46ee7db0a (patch) | |
| tree | 7b7166a94f7cdc144649cf8b7d3edb5c671e31ee /arch/powerpc/sysdev/fsl_pci.c | |
| parent | b567d1c74ecfe4c321bdba251506a95e4c837c86 (diff) | |
| download | linux-a393d8977acd834520357f951bb28ef46ee7db0a.tar.xz | |
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: Jia Hongtao <B38951@freescale.com>
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/sysdev/fsl_pci.c')
| -rw-r--r-- | arch/powerpc/sysdev/fsl_pci.c | 37 |
1 files changed, 35 insertions, 2 deletions
diff --git a/arch/powerpc/sysdev/fsl_pci.c b/arch/powerpc/sysdev/fsl_pci.c index ffb93ae9379b..b96885b4e996 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; @@ -902,9 +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, |