Turn off IO & PBIAS cells and then SD card VMMC as soon
as we get disconnect interrupt. Failure to do so might
cause current spikes (latch-up issue) which can potentially
burn the IO cells.
Signed-off-by: Viswanath Puttagunta <vi...@ti.com>
---
drivers/mmc/host/omap_hsmmc.c | 13 ++++++++++---
1 files changed, 10 insertions(+), 3 deletions(-)
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 56d4499..61d830f 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -1177,10 +1177,17 @@ static irqreturn_t omap_hsmmc_detect(int irq, void
*dev_id)
carddetect = -ENOSYS;
}
- if (carddetect)
+ if (carddetect) {
mmc_detect_change(host->mmc, (HZ * 200) / 1000);
- else
- mmc_detect_change(host->mmc, (HZ * 50) / 1000);
+ } else {
+ if ((MMC_POWER_OFF != host->power_mode) &&
+ (mmc_slot(host).set_power != NULL)) {
+ mmc_slot(host).set_power(host->dev, host->slot_id,
+ 0, 0);
+ host->power_mode = MMC_POWER_OFF;
+ }
+ mmc_detect_change(host->mmc, 0);
+ }
return IRQ_HANDLED;
}
--
1.7.4.1
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