Hello, This patch adds runtime pm for dwmmc host. Runtime PM is enabled for dwmmc-exynos. This is RFC because I need some opinion about the host state detection and handling and is not finished. The runtime pm suspend and resume callback are empty for now because the main goal of this path is adding mmc host to the pm runtime what in effect will give an information to the PM core. As mshc will be added to some power domain. This will help to know mmc host state by PM and enter Exynos LPD state. LPD is system level power control mode. In LPD, the supporting it, unused blocks are power and clock gated. I will also look something to add to runtime callbacks to decrease power consumption by the dw_mmc host during normal power mode but this is very tight because clk to the card is gated in some dw_mmc modes (where there is no communication). Thanks, Karol Karol Wrona (1): mmc: dw_mmc: Add runtime pm to dw_mmc drivers/mmc/host/dw_mmc-exynos.c | 69 ++++++++++++++++++++++++++++++++++++-- drivers/mmc/host/dw_mmc.c | 65 +++++++++++++++++++++++++++++++++-- 2 files changed, 130 insertions(+), 4 deletions(-) -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
