From 9e57d60829f5c00ebf44df65a4b709359e285c20 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Tue, 24 Feb 2009 14:48:16 +0200 Subject: [PATCH] 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: Adrian Hunter Acked-by: Tony Lindgren Signed-off-by: Pierre Ossman --- drivers/mmc/host/omap_hsmmc.c | 17 ----------------- 1 file changed, 17 deletions(-) diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c index a631c81dce12..303a7970806d 100644 --- a/drivers/mmc/host/omap_hsmmc.c +++ b/drivers/mmc/host/omap_hsmmc.c @@ -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);