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MMC: regulator utilities

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Glue between MMC and regulator stacks ... verified with
some OMAP3 boards using adjustable and configured-as-fixed
regulators on several MMC controllers.

These calls are intended to be used by MMC host adapters
using at least one regulator per host.  Examples include
slots with regulators supporting multiple voltages and
ones using multiple voltage rails (e.g. DAT4..DAT7 using a
separate supply, or a split rail chip like certain SDIO
WLAN or eMMC solutions).

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
This commit is contained in:
David Brownell
2009-03-11 03:30:43 -08:00
committed by Liam Girdwood
parent 66b659e685
commit 5c13941acc
2 changed files with 105 additions and 0 deletions
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5
include/linux/mmc/host.h
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@@ -192,5 +192,10 @@ static inline void mmc_signal_sdio_irq(struct mmc_host *host)
wake_up_process(host->sdio_irq_thread);
}
struct regulator;
int mmc_regulator_get_ocrmask(struct regulator *supply);
int mmc_regulator_set_ocr(struct regulator *supply, unsigned short vdd_bit);
#endif