Thanks for the patch,
On 11/30/2011 04:58 AM, Jaehoon Chung wrote:
> Dw_mmc controller didn't use dev_pm_ops.
> This patch modified to use the dev_mp_ops for dw_mmc controller
>
> Signed-off-by: Jaehoon Chung <[email protected]>
> Signed-off-by: Kyungmin Park <[email protected]>
> ---
> drivers/mmc/host/dw_mmc.c | 24 +++++++++++++++---------
> 1 files changed, 15 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
> index 3aaeb08..fc9beea 100644
> --- a/drivers/mmc/host/dw_mmc.c
> +++ b/drivers/mmc/host/dw_mmc.c
> @@ -2066,10 +2066,10 @@ static int __exit dw_mci_remove(struct
> platform_device *pdev)
> /*
> * TODO: we should probably disable the clock to the card in the suspend
> path.
> */
> -static int dw_mci_suspend(struct platform_device *pdev, pm_message_t mesg)
> +static int dw_mci_suspend(struct device *dev)
> {
> int i, ret;
> - struct dw_mci *host = platform_get_drvdata(pdev);
> + struct dw_mci *host = dev_get_drvdata(dev);
>
> for (i = 0; i < host->num_slots; i++) {
> struct dw_mci_slot *slot = host->slot[i];
> @@ -2092,10 +2092,10 @@ static int dw_mci_suspend(struct platform_device
> *pdev, pm_message_t mesg)
> return 0;
> }
>
> -static int dw_mci_resume(struct platform_device *pdev)
> +static int dw_mci_resume(struct device *dev)
> {
> int i, ret;
> - struct dw_mci *host = platform_get_drvdata(pdev);
> + struct dw_mci *host = dev_get_drvdata(dev);
>
> if (host->vmmc)
> regulator_enable(host->vmmc);
> @@ -2103,7 +2103,7 @@ static int dw_mci_resume(struct platform_device *pdev)
> if (host->dma_ops->init)
> host->dma_ops->init(host);
>
> - if (!mci_wait_reset(&pdev->dev, host)) {
> + if (!mci_wait_reset(dev, host)) {
> ret = -ENODEV;
> return ret;
> }
> @@ -2128,17 +2128,23 @@ static int dw_mci_resume(struct platform_device *pdev)
>
> return 0;
> }
> +
> +static const struct dev_pm_ops dw_mci_pmops = {
> + .suspend = dw_mci_suspend,
> + .resume = dw_mci_resume,
> +};
If I understand the dev_pm_ops stuff right, the other callbacks will
need setting also so as not to break hibernation. It looks like there
are macros in include/linux/pm.h (such as SIMPLE_DEV_PM_OPS) which are
used in other drivers (e.g. see commit bdda821). Note how it can be used
outside the #ifdef (no need for DW_MCI_PMOPS), and the #ifdef is changed
to CONFIG_PM_SLEEP.
Other than that it looks fine.
Cheers
James
> +
> +#define DW_MCI_PMOPS (&dw_mci_pmops)
> +
> #else
> -#define dw_mci_suspend NULL
> -#define dw_mci_resume NULL
> +#define DW_MCI_PMOPS NULL
> #endif /* CONFIG_PM */
>
> static struct platform_driver dw_mci_driver = {
> .remove = __exit_p(dw_mci_remove),
> - .suspend = dw_mci_suspend,
> - .resume = dw_mci_resume,
> .driver = {
> .name = "dw_mmc",
> + .pm = DW_MCI_PMOPS,
> },
> };
>
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