* Pierre Ossman <[email protected]> [090428 12:38]: > Jarkko? Tony?
Hmm, we haven't heard from Jarkko for a while.. Adrian, care to take a look at this patch? Tony > On Tue, 21 Apr 2009 13:09:22 +0530 > "Gadiyar, Anand" <[email protected]> wrote: > > > From: Anand Gadiyar <[email protected]> > > > > OMAP: HSMMC: Do not enable buffer ready interrupt if using DMA > > > > This considerably reduces the number of interrupts during a transfer > > and ought to result in some power saving. > > > > Signed-off-by: Anand Gadiyar <[email protected]> > > Signed-off-by: Santosh Shilimkar <[email protected]> > > Acked-by: Kishore Kadiyala <[email protected]> > > --- > > diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c > > index e62a22a..2d83807 100644 > > --- a/drivers/mmc/host/omap_hsmmc.c > > +++ b/drivers/mmc/host/omap_hsmmc.c > > @@ -70,6 +70,8 @@ > > #define DTO_MASK 0x000F0000 > > #define DTO_SHIFT 16 > > #define INT_EN_MASK 0x307F0033 > > +#define BWR_ENABLE (1 << 4) > > +#define BRR_ENABLE (1 << 5) > > #define INIT_STREAM (1 << 1) > > #define DP_SELECT (1 << 21) > > #define DDIR (1 << 4) > > @@ -241,7 +243,12 @@ mmc_omap_start_command(struct mmc_omap_host *host, > > struct mmc_command *cmd, > > */ > > OMAP_HSMMC_WRITE(host->base, STAT, STAT_CLEAR); > > OMAP_HSMMC_WRITE(host->base, ISE, INT_EN_MASK); > > - OMAP_HSMMC_WRITE(host->base, IE, INT_EN_MASK); > > + > > + if (host->use_dma) > > + OMAP_HSMMC_WRITE(host->base, IE, > > + INT_EN_MASK & ~(BRR_ENABLE | BWR_ENABLE)); > > + else > > + OMAP_HSMMC_WRITE(host->base, IE, INT_EN_MASK); > > > > host->response_busy = 0; > > if (cmd->flags & MMC_RSP_PRESENT) { > > > -- > -- Pierre Ossman > > WARNING: This correspondence is being monitored by the > Swedish government. Make sure your server uses encryption > for SMTP traffic and consider using PGP for end-to-end > encryption. -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
