mmc: mediatek: add ops->get_cd() support

if user plug out sd card slowly, finally card is plugged out but
cat /proc/partitions can find that card is still exist in kernel.
that's because alougth get card detect interrupt but CMD13 still
can get correct response(all other pins are connected expect card
detect pin).
add ops->get_cd() can avoid this issue.

Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c
index 5a672a5218ad41e090b693f898e93f4da59b26bc..68f4453017dfb7b01ae1dff9132b02f330d3e619 100644 (file)
--- a/drivers/mmc/host/mtk-sd.c
+++ b/drivers/mmc/host/mtk-sd.c
@@ -1585,6 +1585,7 @@ static struct mmc_host_ops mt_msdc_ops = {
        .request = msdc_ops_request,
        .set_ios = msdc_ops_set_ios,
        .get_ro = mmc_gpio_get_ro,
+       .get_cd = mmc_gpio_get_cd,
        .start_signal_voltage_switch = msdc_ops_switch_volt,
        .card_busy = msdc_card_busy,
        .execute_tuning = msdc_execute_tuning,