Messages in this thread Patch in this message | | | From | Nicolas Ferre <> | Subject | [PATCH V2] MMC: PM: add suspend/resume in atmel-mci | Date | Thu, 30 Jun 2011 15:49:41 +0200 |
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Take care of slots while going to suspend state.
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> --- V2: move to pm_ops
drivers/mmc/host/atmel-mci.c | 47 ++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 47 insertions(+), 0 deletions(-)
diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c index aa8039f..058f1842 100644 --- a/drivers/mmc/host/atmel-mci.c +++ b/drivers/mmc/host/atmel-mci.c @@ -1878,10 +1878,57 @@ static int __exit atmci_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_PM +static int atmci_suspend(struct device *dev) +{ + struct atmel_mci *host = dev_get_drvdata(dev); + struct atmel_mci_slot *slot; + int i, ret; + + for (i = 0; i < ATMEL_MCI_MAX_NR_SLOTS; i++) { + slot = host->slot[i]; + if (!slot) + continue; + ret = mmc_suspend_host(slot->mmc); + if (ret < 0) { + while (--i >= 0) { + slot = host->slot[i]; + if (slot) + mmc_resume_host(host->slot[i]->mmc); + } + return ret; + } + } + + return 0; +} + +static int atmci_resume(struct device *dev) +{ + struct atmel_mci *host = dev_get_drvdata(dev); + struct atmel_mci_slot *slot; + int i, ret; + + for (i = 0; i < ATMEL_MCI_MAX_NR_SLOTS; i++) { + slot = host->slot[i]; + if (!slot) + continue; + ret = mmc_resume_host(slot->mmc); + if (ret < 0) + return ret; + } + + return 0; +} +#endif +static SIMPLE_DEV_PM_OPS(atmci_pm, atmci_suspend, atmci_resume); + + static struct platform_driver atmci_driver = { .remove = __exit_p(atmci_remove), .driver = { .name = "atmel_mci", + .pm = &atmci_pm, }, }; -- 1.7.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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