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authorBojan Prtvar <prtvar.b@gmail.com>2016-07-19 11:16:38 +0200
committerUlf Hansson <ulf.hansson@linaro.org>2016-07-25 10:34:51 +0200
commit6825a606584cec455b003afec7c10a07e563c994 (patch)
tree7357da2ff81f38eac46daefc8f877b58fbc20137 /drivers/mmc
parent2c4c7146c7f6cffcbd71f1df95e6bc6727324e05 (diff)
mmc: core: Extend sysfs with DSR register
Export DSR register through sysfs same as we did for the CID, CSD and OCR registers. Signed-off-by: Bojan Prtvar <prtvar.b@gmail.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/core/mmc.c17
-rw-r--r--drivers/mmc/core/sd.c17
2 files changed, 34 insertions, 0 deletions
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 403b97b00bd5..f2d185cf8a8b 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);
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
index 3dd0861f4557..0123936241b0 100644
--- a/drivers/mmc/core/sd.c
+++ b/drivers/mmc/core/sd.c
@@ -678,6 +678,22 @@ MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial);
MMC_DEV_ATTR(ocr, "%08x\n", card->ocr);
+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 *sd_std_attrs[] = {
&dev_attr_cid.attr,
&dev_attr_csd.attr,
@@ -692,6 +708,7 @@ static struct attribute *sd_std_attrs[] = {
&dev_attr_oemid.attr,
&dev_attr_serial.attr,
&dev_attr_ocr.attr,
+ &dev_attr_dsr.attr,
NULL,
};
ATTRIBUTE_GROUPS(sd_std);