diff options
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/omap_hsmmc.c | 27 |
1 files changed, 19 insertions, 8 deletions
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c index 7699f0aeb58d..30b863b2c510 100644 --- a/drivers/mmc/host/omap_hsmmc.c +++ b/drivers/mmc/host/omap_hsmmc.c @@ -143,6 +143,7 @@ struct mmc_omap_host { unsigned int dma_len; unsigned int dma_sg_idx; unsigned char bus_mode; + unsigned char power_mode; u32 *buffer; u32 bytesleft; int suspended; @@ -863,16 +864,25 @@ static void omap_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) unsigned long regval; unsigned long timeout; u32 con; + int do_send_init_stream = 0; mmc_host_enable(host->mmc); - switch (ios->power_mode) { - case MMC_POWER_OFF: - mmc_slot(host).set_power(host->dev, host->slot_id, 0, 0); - break; - case MMC_POWER_UP: - mmc_slot(host).set_power(host->dev, host->slot_id, 1, ios->vdd); - break; + if (ios->power_mode != host->power_mode) { + switch (ios->power_mode) { + case MMC_POWER_OFF: + mmc_slot(host).set_power(host->dev, host->slot_id, + 0, 0); + break; + case MMC_POWER_UP: + mmc_slot(host).set_power(host->dev, host->slot_id, + 1, ios->vdd); + break; + case MMC_POWER_ON: + do_send_init_stream = 1; + break; + } + host->power_mode = ios->power_mode; } con = OMAP_HSMMC_READ(host->base, CON); @@ -938,7 +948,7 @@ static void omap_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) OMAP_HSMMC_WRITE(host->base, SYSCTL, OMAP_HSMMC_READ(host->base, SYSCTL) | CEN); - if (ios->power_mode == MMC_POWER_ON) + if (do_send_init_stream) send_init_stream(host); if (ios->bus_mode == MMC_BUSMODE_OPENDRAIN) @@ -1116,6 +1126,7 @@ static int __init omap_mmc_probe(struct platform_device *pdev) host->slot_id = 0; host->mapbase = res->start; host->base = ioremap(host->mapbase, SZ_4K); + host->power_mode = -1; platform_set_drvdata(pdev, host); INIT_WORK(&host->mmc_carddetect_work, mmc_omap_detect); |