diff options
| author | Pavan Kunapuli <pkunapuli@nvidia.com> | 2013-10-24 19:03:45 +0530 |
|---|---|---|
| committer | Bitan Biswas <bbiswas@nvidia.com> | 2013-10-29 06:29:37 -0700 |
| commit | 08e714a85651abcb3cb332a4a9ec3c053d2b6b8d (patch) | |
| tree | e4d4a9e21a098c3f47370c5e536096500813f018 /include/linux/mmc | |
| parent | 05470edb23effa3823b29b97c1ba370f3603ca6b (diff) | |
mmc: host: sdhci: sdio delayed clock gate
Aggressive clock gate degrades sdio performance.
Hence, sdio clock gate is delayed.
- sdio clock gate is done if no further
transaction starts within 20msec interval
bug 1299485
Change-Id: Icb7a647bd4c725372173ea65894524f393220843
Signed-off-by: Pavan Kunapuli <pkunapuli@nvidia.com>
Signed-off-by: Bitan Biswas <bbiswas@nvidia.com>
Reviewed-on: http://git-master/r/304725
Reviewed-by: Automatic_Commit_Validation_User
Diffstat (limited to 'include/linux/mmc')
| -rw-r--r-- | include/linux/mmc/sdhci.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/mmc/sdhci.h b/include/linux/mmc/sdhci.h index a689528dd28b..e4cb7de6d877 100644 --- a/include/linux/mmc/sdhci.h +++ b/include/linux/mmc/sdhci.h @@ -113,6 +113,8 @@ struct sdhci_host { #define SDHCI_QUIRK2_SUPPORT_64BIT_DMA (1<<9) /* Use 64 BIT addressing */ #define SDHCI_QUIRK2_USE_64BIT_ADDR (1<<10) +/* sdio delayed clock gate */ +#define SDHCI_QUIRK2_SDIO_DELAYED_CLK_GATE (1<<11) int irq; /* Device IRQ */ void __iomem *ioaddr; /* Mapped address */ @@ -200,6 +202,14 @@ struct sdhci_host { bool edp_support; struct sysedp_consumer *sysedpc; + struct delayed_work delayed_clk_gate_wrk; + bool sdio_clk_gate_init_done; + bool is_clk_on; + unsigned long private[0] ____cacheline_aligned; }; + +/* callback is registered during init */ +void delayed_clk_gate_cb(struct work_struct *work); + #endif /* LINUX_MMC_SDHCI_H */ |