From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763598AbZANQLy (ORCPT ); Wed, 14 Jan 2009 11:11:54 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758760AbZANQLq (ORCPT ); Wed, 14 Jan 2009 11:11:46 -0500 Received: from smtp.nokia.com ([192.100.105.134]:51156 "EHLO mgw-mx09.nokia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758731AbZANQLp (ORCPT ); Wed, 14 Jan 2009 11:11:45 -0500 Message-ID: <496E1187.60305@nokia.com> Date: Wed, 14 Jan 2009 18:23:35 +0200 From: Adrian Hunter User-Agent: Thunderbird 2.0.0.17 (X11/20080925) MIME-Version: 1.0 To: Pierre Ossman CC: LKML Subject: [PATCH] MMC: Add Extended CSD as a device attribute Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 14 Jan 2009 16:11:17.0857 (UTC) FILETIME=[BB554510:01C97662] X-Nokia-AV: Clean Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Signed-off-by: Adrian Hunter --- 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