On Tue, Dec 10, 2013 at 10:06:13PM +0800, Chew Chiau Ee wrote:
> From: Chew, Chiau Ee <chiau.ee.c...@intel.com>
>
> This is to disable/enable DW_DMAC hw during suspend/resume.
>
> Signed-off-by: Chew, Chiau Ee <chiau.ee.c...@intel.com>
> Acked-by: Andy Shevchenko <andriy.shevche...@linux.intel.com>
> ---
> drivers/dma/dw/pci.c | 33 +++++++++++++++++++++++++++++++++
> 1 files changed, 33 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/dma/dw/pci.c b/drivers/dma/dw/pci.c
> index e89fc24..97bc3a2 100644
> --- a/drivers/dma/dw/pci.c
> +++ b/drivers/dma/dw/pci.c
> @@ -75,6 +75,36 @@ static void dw_pci_remove(struct pci_dev *pdev)
> dev_warn(&pdev->dev, "can't remove device properly: %d\n", ret);
> }
>
> +#ifdef CONFIG_PM_SLEEP
> +
> +static int dw_pci_suspend_noirq(struct device *dev)
> +{
> + struct pci_dev *pci = to_pci_dev(dev);
> + struct dw_dma_chip *chip = pci_get_drvdata(pci);
> +
> + return dw_dma_suspend(chip);
> +};
> +
> +static int dw_pci_resume_noirq(struct device *dev)
> +{
> + struct pci_dev *pci = to_pci_dev(dev);
> + struct dw_dma_chip *chip = pci_get_drvdata(pci);
> +
> + return dw_dma_resume(chip);
> +};
> +
> +#else /* !CONFIG_PM_SLEEP */
> +
> +#define dw_pci_suspend_noirq NULL
> +#define dw_pci_resume_noirq NULL
> +
> +#endif /* !CONFIG_PM_SLEEP */
How about SET_SYSTEM_SLEEP_PM_OPS instead?
--
~Vinod
> +
> +static const struct dev_pm_ops dw_pci_dev_pm_ops = {
> + .suspend_noirq = dw_pci_suspend_noirq,
> + .resume_noirq = dw_pci_resume_noirq,
> +};
> +
> static DEFINE_PCI_DEVICE_TABLE(dw_pci_id_table) = {
> /* Medfield */
> { PCI_VDEVICE(INTEL, 0x0827), (kernel_ulong_t)&dw_pci_pdata },
> @@ -92,6 +122,9 @@ static struct pci_driver dw_pci_driver = {
> .id_table = dw_pci_id_table,
> .probe = dw_pci_probe,
> .remove = dw_pci_remove,
> + .driver = {
> + .pm = &dw_pci_dev_pm_ops,
> + },
> };
>
> module_pci_driver(dw_pci_driver);
> --
> 1.7.4.4
>
--
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