mmc: dw_mmc: Cleanup disable of low power mode w/ SDIO interrupts
In the patch (9623b5b mmc: dw_mmc: Disable low power mode if SDIO
interrupts are used) I added code that disabled the low power mode of
dw_mmc when SDIO interrupts are used. That code worked but always
felt a little hacky because we ended up disabling low power as a side
effect of the first enable_sdio_irq() call. That wouldn't be so bad
except that disabling low power involves a complicated process of
writing to the CMD/CMDARG registers and that extra process makes it
difficult to cleanly the read-modify-write race in
dw_mci_enable_sdio_irq() (see future patch in the series).
Change the code to take advantage of the init_card() callback of the
mmc core to do this right at bootup.
Signed-off-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h
index 0d0f7a2..d27d4c0 100644
--- a/drivers/mmc/host/dw_mmc.h
+++ b/drivers/mmc/host/dw_mmc.h
@@ -244,6 +244,7 @@
unsigned long flags;
#define DW_MMC_CARD_PRESENT 0
#define DW_MMC_CARD_NEED_INIT 1
+#define DW_MMC_CARD_NO_LOW_PWR 2
int id;
int sdio_id;
};