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-rw-r--r--drivers/mmc/host/omap_hsmmc.c27
1 files changed, 19 insertions, 8 deletions
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 7699f0aeb58..30b863b2c51 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);