Messages in this thread Patch in this message | | | Date | Wed, 14 Jan 2009 18:23:35 +0200 | From | Adrian Hunter <> | Subject | [PATCH] MMC: Add Extended CSD as a device attribute |
| |
Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com> --- drivers/mmc/core/mmc.c | 29 +++++++++++++++++++++++++++++ 1 files changed, 29 insertions(+), 0 deletions(-)
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index 3f5b089..29291de 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -259,6 +259,34 @@ MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); +static ssize_t mmc_ext_csd_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct mmc_card *card = container_of(dev, struct mmc_card, dev); + ssize_t n = 0; + u8 *ext_csd; + int err, i; + + ext_csd = kmalloc(512, GFP_KERNEL); + if (!ext_csd) + return 0; + + mmc_claim_host(card->host); + err = mmc_send_ext_csd(card, ext_csd); + mmc_release_host(card->host); + + if (!err) { + for (i = 511; i >= 0; i--) + n += sprintf(buf + n, "%02x", (unsigned)ext_csd[i]); + n += sprintf(buf + n, "\n"); + } + + kfree(ext_csd); + + return n; +} + +static DEVICE_ATTR(ext_csd, S_IRUGO, mmc_ext_csd_show, NULL); + static struct attribute *mmc_std_attrs[] = { &dev_attr_cid.attr, &dev_attr_csd.attr, @@ -269,6 +297,7 @@ static struct attribute *mmc_std_attrs[] = { &dev_attr_name.attr, &dev_attr_oemid.attr, &dev_attr_serial.attr, + &dev_attr_ext_csd.attr, NULL, }; -- 1.5.4.3
| |