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authorHector Palacios <hector.palacios@digi.com>2013-04-10 11:13:45 +0200
committerChris Ball <cjb@laptop.org>2013-04-12 14:17:55 -0400
commit1d53196a0d604fcf636203fac21e944b6a9cf275 (patch)
tree280c73673e05c91965564bb4b693c1d063b7bf68 /drivers/mmc/host
parent5086e5f41fd107539911edf62f2d202753ed1980 (diff)
downloadvexpress-lsk-1d53196a0d604fcf636203fac21e944b6a9cf275.tar.gz
mmc: mxs-mmc: add broken-cd property
According to bindings documentation for mmc, the property 'broken-cd' can be used to indicate card-detection is not available and polling must be used instead. This patch retrieves this property and sets a custom flag. On the get_cd() hook, it returns 1 if the flag is set, to always assume the card is present. Signed-off-by: Hector Palacios <hector.palacios@digi.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc/host')
-rw-r--r--drivers/mmc/host/mxs-mmc.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c
index c2318812931..146a53bfab7 100644
--- a/drivers/mmc/host/mxs-mmc.c
+++ b/drivers/mmc/host/mxs-mmc.c
@@ -73,6 +73,7 @@ struct mxs_mmc_host {
int wp_gpio;
bool wp_inverted;
bool cd_inverted;
+ bool broken_cd;
bool non_removable;
};
@@ -97,7 +98,7 @@ static int mxs_mmc_get_cd(struct mmc_host *mmc)
struct mxs_mmc_host *host = mmc_priv(mmc);
struct mxs_ssp *ssp = &host->ssp;
- return host->non_removable ||
+ return host->non_removable || host->broken_cd ||
!(readl(ssp->base + HW_SSP_STATUS(ssp)) &
BM_SSP_STATUS_CARD_DETECT) ^ host->cd_inverted;
}
@@ -689,6 +690,7 @@ static int mxs_mmc_probe(struct platform_device *pdev)
mmc->caps |= MMC_CAP_4_BIT_DATA;
else if (bus_width == 8)
mmc->caps |= MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA;
+ host->broken_cd = of_property_read_bool(np, "broken-cd");
host->non_removable = of_property_read_bool(np, "non-removable");
if (host->non_removable)
mmc->caps |= MMC_CAP_NONREMOVABLE;