On 07/21/2010 08:33 PM, ext Ohad Ben-Cohen wrote:
Add support for an SDIO device to stay powered off even without
the presence of an SDIO function driver. A host should explicitly
ask for it by means of MMC_CAP_DONT_POWER_CARD, and the SDIO
function driver should know it needs to call sdio_claim_power
before accessing the device.
Signed-off-by: Ohad Ben-Cohen<ohad@xxxxxxxxxx>
Shouldn't this be the default behaviour? If there is no function driver for any
of the functions of the card, then sdio core shold power off the card.
I don't see a need for a special capability flag for this.
in fact MMC_CAP_DONT_POWER_CARD does not seem like an mmc host's capability
flag, it seems more like a request from the board to keep the card powered off.
regards,
-roger
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