diff options
Diffstat (limited to 'drivers/mmc/core/mmc.c')
| -rw-r--r-- | drivers/mmc/core/mmc.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index 403b97b..f2d185c 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -767,6 +767,22 @@ static ssize_t mmc_fwrev_show(struct device *dev, static DEVICE_ATTR(fwrev, S_IRUGO, mmc_fwrev_show, NULL); +static ssize_t mmc_dsr_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct mmc_card *card = mmc_dev_to_card(dev); + struct mmc_host *host = card->host; + + if (card->csd.dsr_imp && host->dsr_req) + return sprintf(buf, "0x%x\n", host->dsr); + else + /* return default DSR value */ + return sprintf(buf, "0x%x\n", 0x404); +} + +static DEVICE_ATTR(dsr, S_IRUGO, mmc_dsr_show, NULL); + static struct attribute *mmc_std_attrs[] = { &dev_attr_cid.attr, &dev_attr_csd.attr, @@ -786,6 +802,7 @@ static struct attribute *mmc_std_attrs[] = { &dev_attr_raw_rpmb_size_mult.attr, &dev_attr_rel_sectors.attr, &dev_attr_ocr.attr, + &dev_attr_dsr.attr, NULL, }; ATTRIBUTE_GROUPS(mmc_std); |
