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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>
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commit
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@ -29,6 +29,7 @@ All attributes are read-only.
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raw_rpmb_size_mult RPMB partition size
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rel_sectors Reliable write sector count
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ocr Operation Conditions Register
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dsr Driver Stage Register
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Note on Erase Size and Preferred Erase Size:
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@ -767,6 +767,22 @@ static ssize_t mmc_fwrev_show(struct device *dev,
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static DEVICE_ATTR(fwrev, S_IRUGO, mmc_fwrev_show, NULL);
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static ssize_t mmc_dsr_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct mmc_card *card = mmc_dev_to_card(dev);
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struct mmc_host *host = card->host;
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if (card->csd.dsr_imp && host->dsr_req)
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return sprintf(buf, "0x%x\n", host->dsr);
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else
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/* return default DSR value */
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return sprintf(buf, "0x%x\n", 0x404);
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}
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static DEVICE_ATTR(dsr, S_IRUGO, mmc_dsr_show, NULL);
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static struct attribute *mmc_std_attrs[] = {
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&dev_attr_cid.attr,
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&dev_attr_csd.attr,
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@ -786,6 +802,7 @@ static struct attribute *mmc_std_attrs[] = {
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&dev_attr_raw_rpmb_size_mult.attr,
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&dev_attr_rel_sectors.attr,
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&dev_attr_ocr.attr,
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&dev_attr_dsr.attr,
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NULL,
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};
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ATTRIBUTE_GROUPS(mmc_std);
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@ -678,6 +678,22 @@ MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial);
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MMC_DEV_ATTR(ocr, "%08x\n", card->ocr);
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static ssize_t mmc_dsr_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct mmc_card *card = mmc_dev_to_card(dev);
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struct mmc_host *host = card->host;
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if (card->csd.dsr_imp && host->dsr_req)
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return sprintf(buf, "0x%x\n", host->dsr);
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else
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/* return default DSR value */
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return sprintf(buf, "0x%x\n", 0x404);
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}
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static DEVICE_ATTR(dsr, S_IRUGO, mmc_dsr_show, NULL);
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static struct attribute *sd_std_attrs[] = {
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&dev_attr_cid.attr,
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&dev_attr_csd.attr,
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@ -692,6 +708,7 @@ static struct attribute *sd_std_attrs[] = {
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&dev_attr_oemid.attr,
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&dev_attr_serial.attr,
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&dev_attr_ocr.attr,
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&dev_attr_dsr.attr,
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NULL,
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};
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ATTRIBUTE_GROUPS(sd_std);
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