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Commit 9e57d608 authored by Adrian Hunter's avatar Adrian Hunter Committed by Pierre Ossman
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omap_hsmmc: do not re-power when powering off MMC 



Remove code that turns MMC1 power back on after it
has been powered off (when the voltage is 1.8V).

The offending code is not necessary because the
host controller bus voltage is initialized to
3V when probing or resuming.  Note that MMC powers up
with the highest voltage available (see mmc_power_up())
which will be 3V also.

Signed-off-by: default avatarAdrian Hunter <ext-adrian.hunter@nokia.com>
Acked-by: default avatarTony Lindgren <tony@atomide.com>
Signed-off-by: default avatarPierre Ossman <drzeus@drzeus.cx>
parent 736bb6bb

drivers/mmc/host/omap_hsmmc.c

+0 −17
Original line number Diff line number Diff line
@@ -485,9 +485,6 @@ static int omap_mmc_switch_opcond(struct mmc_omap_host *host, int vdd) 
	u32 reg_val = 0;

	int ret;



	if (host->id != OMAP_MMC1_DEVID)

		return 0;



	/* Disable the clocks */

	clk_disable(host->fclk);

	clk_disable(host->iclk);
@@ -786,20 +783,6 @@ static void omap_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) 
	switch (ios->power_mode) {

	case MMC_POWER_OFF:

		mmc_slot(host).set_power(host->dev, host->slot_id, 0, 0);

		/*

		 * Reset interface voltage to 3V if it's 1.8V now;

		 * only relevant on MMC-1, the others always use 1.8V.

		 *

		 * REVISIT: If we are able to detect cards after unplugging

		 * a 1.8V card, this code should not be needed.

		 */

		if (host->id != OMAP_MMC1_DEVID)

			break;

		if (!(OMAP_HSMMC_READ(host->base, HCTL) & SDVSDET)) {

			int vdd = fls(host->mmc->ocr_avail) - 1;

			if (omap_mmc_switch_opcond(host, vdd) != 0)

				host->mmc->ios.vdd = vdd;

		}

		break;

	case MMC_POWER_UP:

		mmc_slot(host).set_power(host->dev, host->slot_id, 1, ios->vdd);