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| author | Bojan Prtvar <prtvar.b@gmail.com> | 2016-07-19 11:16:38 +0200 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2016-07-25 10:34:51 +0200 |
| commit | 6825a606584cec455b003afec7c10a07e563c994 (patch) | |
| tree | 7357da2ff81f38eac46daefc8f877b58fbc20137 /drivers/mmc | |
| parent | 2c4c7146c7f6cffcbd71f1df95e6bc6727324e05 (diff) | |
| download | linux-6825a606584cec455b003afec7c10a07e563c994.tar.gz | |
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.c | 17 | ||||
| -rw-r--r-- | drivers/mmc/core/sd.c | 17 |
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); |