From patchwork Fri Sep 30 08:48:36 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shawn Lin X-Patchwork-Id: 9357793 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 2BF1A600C8 for ; Fri, 30 Sep 2016 08:46:59 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1D6F229EFE for ; Fri, 30 Sep 2016 08:46:59 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 123BF29F00; Fri, 30 Sep 2016 08:46:59 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 98BF929EFE for ; Fri, 30 Sep 2016 08:46:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752236AbcI3Iq5 (ORCPT ); Fri, 30 Sep 2016 04:46:57 -0400 Received: from lucky1.263xmail.com ([211.157.147.136]:58818 "EHLO lucky1.263xmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752173AbcI3Iq4 (ORCPT ); Fri, 30 Sep 2016 04:46:56 -0400 Received: from shawn.lin?rock-chips.com (unknown [192.168.167.227]) by lucky1.263xmail.com (Postfix) with ESMTP id 68AFD193; Fri, 30 Sep 2016 16:46:51 +0800 (CST) X-263anti-spam: KSV:0; X-MAIL-GRAY: 1 X-MAIL-DELIVERY: 0 X-KSVirus-check: 0 X-ABS-CHECKED: 4 X-ADDR-CHECKED4: 1 Received: from localhost.localdomain (localhost [127.0.0.1]) by smtp.263.net (Postfix) with ESMTP id 45F5039C; Fri, 30 Sep 2016 16:46:52 +0800 (CST) X-RL-SENDER: shawn.lin@rock-chips.com X-FST-TO: jh80.chung@samsung.com X-SENDER-IP: 58.22.7.114 X-LOGIN-NAME: shawn.lin@rock-chips.com X-UNIQUE-TAG: <09b1af422a062fbb82cd0c80f2eb8684> X-ATTACHMENT-NUM: 0 X-SENDER: lintao@rock-chips.com X-DNS-TYPE: 0 Received: from unknown (unknown [58.22.7.114]) by smtp.263.net (Postfix) whith SMTP id 211007XX8WZ; Fri, 30 Sep 2016 16:46:52 +0800 (CST) From: Shawn Lin To: Jaehoon Chung , Ulf Hansson Cc: linux-mmc@vger.kernel.org, Doug Anderson , linux-rockchip@lists.infradead.org, Shawn Lin Subject: [RFC PATCH v2 3/4] mmc: core: expose the capability of gpio card detect Date: Fri, 30 Sep 2016 16:48:36 +0800 Message-Id: <1475225317-2815-4-git-send-email-shawn.lin@rock-chips.com> X-Mailer: git-send-email 1.8.0 In-Reply-To: <1475225317-2815-1-git-send-email-shawn.lin@rock-chips.com> References: <1475225317-2815-1-git-send-email-shawn.lin@rock-chips.com> Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add new helper API mmc_can_gpio_cd for slot-gpio to make host drivers know whether it supports gpio card detect. Signed-off-by: Shawn Lin --- drivers/mmc/core/slot-gpio.c | 8 ++++++++ include/linux/mmc/slot-gpio.h | 1 + 2 files changed, 9 insertions(+) diff --git a/drivers/mmc/core/slot-gpio.c b/drivers/mmc/core/slot-gpio.c index 27117ba..babe591 100644 --- a/drivers/mmc/core/slot-gpio.c +++ b/drivers/mmc/core/slot-gpio.c @@ -258,6 +258,14 @@ int mmc_gpiod_request_cd(struct mmc_host *host, const char *con_id, } EXPORT_SYMBOL(mmc_gpiod_request_cd); +bool mmc_can_gpio_cd(struct mmc_host *host) +{ + struct mmc_gpio *ctx = host->slot.handler_priv; + + return ctx->cd_gpio ? true : false; +} +EXPORT_SYMBOL(mmc_can_gpio_cd); + /** * mmc_gpiod_request_ro - request a gpio descriptor for write protection * @host: mmc host diff --git a/include/linux/mmc/slot-gpio.h b/include/linux/mmc/slot-gpio.h index 3945a8c..a7972cd 100644 --- a/include/linux/mmc/slot-gpio.h +++ b/include/linux/mmc/slot-gpio.h @@ -29,5 +29,6 @@ int mmc_gpiod_request_ro(struct mmc_host *host, const char *con_id, void mmc_gpio_set_cd_isr(struct mmc_host *host, irqreturn_t (*isr)(int irq, void *dev_id)); void mmc_gpiod_request_cd_irq(struct mmc_host *host); +bool mmc_can_gpio_cd(struct mmc_host *host); #endif