Some controllers, supported by the tmio_mmc driver do not have the card detect
pin of a slot connected, so that polling needs to be used and card detection is
handled by other means.
This patch exposes a get_cd hook for that purpose.
Signed-off-by: Arnd Hannemann <arnd@xxxxxxxxxx>
---
drivers/mmc/host/tmio_mmc.c | 13 +++++++++++++
include/linux/mfd/tmio.h | 1 +
2 files changed, 14 insertions(+), 0 deletions(-)
diff --git a/drivers/mmc/host/tmio_mmc.c b/drivers/mmc/host/tmio_mmc.c
index ee7d0a5..fe2ebf6 100644
--- a/drivers/mmc/host/tmio_mmc.c
+++ b/drivers/mmc/host/tmio_mmc.c
@@ -755,10 +755,23 @@ static int tmio_mmc_get_ro(struct mmc_host *mmc)
(sd_ctrl_read32(host, CTL_STATUS) & TMIO_STAT_WRPROTECT)) ? 0 : 1;
}
+static int tmio_mmc_get_cd(struct mmc_host *mmc)
+{
+ struct tmio_mmc_host *host = mmc_priv(mmc);
+ struct mfd_cell *cell = host->pdev->dev.platform_data;
+ struct tmio_mmc_data *pdata = cell->driver_data;
+
+ if (!pdata->get_cd)
+ return -ENOSYS;
+ else
+ return pdata->get_cd(host->pdev);
+}
+
static const struct mmc_host_ops tmio_mmc_ops = {
.request = tmio_mmc_request,
.set_ios = tmio_mmc_set_ios,
.get_ro = tmio_mmc_get_ro,
+ .get_cd = tmio_mmc_get_cd,
};
#ifdef CONFIG_PM
diff --git a/include/linux/mfd/tmio.h b/include/linux/mfd/tmio.h
index f07425b..24c43bb 100644
--- a/include/linux/mfd/tmio.h
+++ b/include/linux/mfd/tmio.h
@@ -74,6 +74,7 @@ struct tmio_mmc_data {
struct tmio_mmc_dma *dma;
void (*set_pwr)(struct platform_device *host, int state);
void (*set_clk_div)(struct platform_device *host, int state);
+ int (*get_cd)(struct platform_device *host);
};
/*
--
1.7.0.4
--
To unsubscribe from this list: send the line "unsubscribe linux-mmc" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
