From patchwork Tue May 26 15:43:34 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Pali_Roh=C3=A1r?= X-Patchwork-Id: 11570749 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7DCC4739 for ; Tue, 26 May 2020 15:43:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 668BF207FB for ; Tue, 26 May 2020 15:43:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1590507834; bh=PS3TMqEUSnh36RZbQLwQotc4tPzv4y0Bou1R/eGCOvs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=v5YUudZH/SMT/XzQm+or5WZ4VYbUdrrGB62kSx7vU12i8O1NgtNpt5ZEJqjvLX93y HwWaNiw8k9phXahFUfgHRfaGkxZVdqxAw1nXbp47+6zFaqyd7ZcigO12H5tLm1GBQT scwDsaeBKQ/sx5KkAG/XNNwBNMwJSQUst+WcKcis= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729181AbgEZPnx (ORCPT ); Tue, 26 May 2020 11:43:53 -0400 Received: from mail.kernel.org ([198.145.29.99]:40258 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727898AbgEZPnx (ORCPT ); Tue, 26 May 2020 11:43:53 -0400 Received: from pali.im (pali.im [31.31.79.79]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id AD2F520663; Tue, 26 May 2020 15:43:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1590507832; bh=PS3TMqEUSnh36RZbQLwQotc4tPzv4y0Bou1R/eGCOvs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=xBVMDInj0KiwbSoP7hs4EClaelZrLXhyVoKi/w7zlCqMBo4RH+8gYAZCQlklZZag/ Jketu+AL6xq2QMkaCPrOlt5XiYUJE11afqtY4hDW91sfjEuauxwLEefHCptf/etODY QOKxrfD0rA0n0oPGEoJlA8RppYjVmxS5vaJJ7o40= Received: by pali.im (Postfix) id 127DB16FA; Tue, 26 May 2020 17:43:51 +0200 (CEST) From: =?utf-8?q?Pali_Roh=C3=A1r?= To: Ulf Hansson Cc: linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, =?utf-8?q?Marek?= =?utf-8?q?_Beh=C3=BAn?= Subject: [PATCH 2/2] mmc: core: Export device/vendor ids from Common CIS for SDIO cards Date: Tue, 26 May 2020 17:43:34 +0200 Message-Id: <20200526154334.21222-2-pali@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200526154334.21222-1-pali@kernel.org> References: <20200526154334.21222-1-pali@kernel.org> MIME-Version: 1.0 Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org Device/vendor ids from Common CIS (Card Information Structure) may be different as device/vendor ids from CIS on particular SDIO function. Export these "main" device/vendor ids for SDIO and SD combo cards at top level mmc device in sysfs so userspace can do better identification of connected SDIO and SD combo cards. Signed-off-by: Pali Rohár Reviewed-by: Marek Behún --- drivers/mmc/core/bus.c | 7 +++++++ drivers/mmc/core/sd.c | 26 +++++++++++++++++++++++++- drivers/mmc/core/sdio.c | 20 +++++++++++++++++++- 3 files changed, 51 insertions(+), 2 deletions(-) diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c index 103eea7cd..5d4b28b29 100644 --- a/drivers/mmc/core/bus.c +++ b/drivers/mmc/core/bus.c @@ -93,6 +93,13 @@ mmc_bus_uevent(struct device *dev, struct kobj_uevent_env *env) return retval; } + if (card->type == MMC_TYPE_SDIO || card->type == MMC_TYPE_SD_COMBO) { + retval = add_uevent_var(env, "SDIO_ID=%04X:%04X", + card->cis.vendor, card->cis.device); + if (retval) + return retval; + } + if (card->type != MMC_TYPE_SDIO) { retval = add_uevent_var(env, "MMC_NAME=%s", mmc_card_name(card)); if (retval) diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c index 76c7add36..ee1a51ff6 100644 --- a/drivers/mmc/core/sd.c +++ b/drivers/mmc/core/sd.c @@ -707,7 +707,12 @@ static ssize_t mmc_dsr_show(struct device *dev, static DEVICE_ATTR(dsr, S_IRUGO, mmc_dsr_show, NULL); +MMC_DEV_ATTR(vendor, "0x%04x\n", card->cis.vendor); +MMC_DEV_ATTR(device, "0x%04x\n", card->cis.device); + static struct attribute *sd_std_attrs[] = { + &dev_attr_vendor.attr, + &dev_attr_device.attr, &dev_attr_cid.attr, &dev_attr_csd.attr, &dev_attr_scr.attr, @@ -726,7 +731,26 @@ static struct attribute *sd_std_attrs[] = { &dev_attr_dsr.attr, NULL, }; -ATTRIBUTE_GROUPS(sd_std); + +static umode_t sd_std_is_visible(struct kobject *kobj, struct attribute *attr, + int index) +{ + struct device *dev = container_of(kobj, struct device, kobj); + struct mmc_card *card = mmc_dev_to_card(dev); + + /* CIS vendor and device ids are available only for Combo cards */ + if ((attr == &dev_attr_vendor.attr || attr == &dev_attr_device.attr) && + card->type != MMC_TYPE_SD_COMBO) + return 0; + + return attr->mode; +} + +static const struct attribute_group sd_std_group = { + .attrs = sd_std_attrs, + .is_visible = sd_std_is_visible, +}; +__ATTRIBUTE_GROUPS(sd_std); struct device_type sd_type = { .groups = sd_std_groups, diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c index ebb387aa5..d708e0fbc 100644 --- a/drivers/mmc/core/sdio.c +++ b/drivers/mmc/core/sdio.c @@ -27,6 +27,24 @@ #include "sdio_ops.h" #include "sdio_cis.h" +MMC_DEV_ATTR(vendor, "0x%04x\n", card->cis.vendor); +MMC_DEV_ATTR(device, "0x%04x\n", card->cis.device); +MMC_DEV_ATTR(ocr, "0x%08x\n", card->ocr); +MMC_DEV_ATTR(rca, "0x%04x\n", card->rca); + +static struct attribute *sdio_std_attrs[] = { + &dev_attr_vendor.attr, + &dev_attr_device.attr, + &dev_attr_ocr.attr, + &dev_attr_rca.attr, + NULL, +}; +ATTRIBUTE_GROUPS(sdio_std); + +struct device_type sdio_type = { + .groups = sdio_std_groups, +}; + static int sdio_read_fbr(struct sdio_func *func) { int ret; @@ -598,7 +616,7 @@ static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr, /* * Allocate card structure. */ - card = mmc_alloc_card(host, NULL); + card = mmc_alloc_card(host, &sdio_type); if (IS_ERR(card)) { err = PTR_ERR(card); goto err;