From patchwork Mon Mar 31 15:18:02 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ulf Hansson X-Patchwork-Id: 3916791 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id C56279F370 for ; Mon, 31 Mar 2014 17:13:02 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 7E76D201F2 for ; Mon, 31 Mar 2014 17:13:01 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 1B3F3201C7 for ; Mon, 31 Mar 2014 17:13:00 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WUeAu-0003lg-IS; Mon, 31 Mar 2014 15:31:02 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WUe9t-0005Mq-Ig; Mon, 31 Mar 2014 15:29:57 +0000 Received: from mail-wi0-f170.google.com ([209.85.212.170]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WUe6Y-00055D-Lh for linux-arm-kernel@lists.infradead.org; Mon, 31 Mar 2014 15:26:33 +0000 Received: by mail-wi0-f170.google.com with SMTP id bs8so3353611wib.1 for ; Mon, 31 Mar 2014 08:26:09 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=39F6dJEVurv9nzN/PI2iaOTPr6Iunuo2890hh8WM9xg=; b=Xfas4Upuy7Nq1v+o/QdYp5+5rsEC/VpDYm9j3eIgtoFHDmvJtUJ2JOWRIXiAZqa9De 1GsoXi27K/q2IzezUN+TY6hdxfRNeRnne/FK1ZRoOSxjc/Vh9DrJhFrztVfJi8lLE3qE obn6GKB+JVDqAuRXxIz3RP7y0o7qTU0NrPkcUPUxzS9h5PtrYKTqPLS/E0zGW9D/C9YS 2RDtyVcHxgs2ytxeyqCbS3HThs5DMRuQzxZ1cOjp4OgHDMcfdvkezFbKn+zbkDqqbbJu sHAM/b0PAmZWQ5z5Jf/JsTni5ZvbeXqO/7/pZaCU4irWMlpiO69PjimQc+CEil1S48aD 8ZHg== X-Gm-Message-State: ALoCoQkIH+eQr6R/ph50kK3qOxz/en4PLKGh6V7kqFsIQN2Hbbz2ReyLXH1kZT9ZNRdEXHUKwfZY X-Received: by 10.180.164.229 with SMTP id yt5mr5069204wib.41.1396279109694; Mon, 31 Mar 2014 08:18:29 -0700 (PDT) Received: from localhost.localdomain ([85.235.11.236]) by mx.google.com with ESMTPSA id wl6sm13547488wjb.3.2014.03.31.08.18.27 for (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Mon, 31 Mar 2014 08:18:28 -0700 (PDT) From: Ulf Hansson To: linux-arm-kernel@lists.infradead.org, Russell King , Linus Walleij Subject: [PATCH V2 01/19] mmc: mmci: Convert to the mmc gpio API Date: Mon, 31 Mar 2014 17:18:02 +0200 Message-Id: <1396279100-2920-2-git-send-email-ulf.hansson@linaro.org> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1396279100-2920-1-git-send-email-ulf.hansson@linaro.org> References: <1396279100-2920-1-git-send-email-ulf.hansson@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140331_112630_978541_E8725A39 X-CRM114-Status: GOOD ( 19.55 ) X-Spam-Score: -2.6 (--) Cc: devicetree@vger.kernel.org, Ulf Hansson , Rob Herring X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.8 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP To avoid duplication of code while handling card detect and write protect GPIO pins/irqs, let's convert to use the mmc gpio API. Signed-off-by: Ulf Hansson --- drivers/mmc/host/mmci.c | 97 ++++++++--------------------------------------- drivers/mmc/host/mmci.h | 3 -- 2 files changed, 15 insertions(+), 85 deletions(-) diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c index 771c60a..b0b81ac 100644 --- a/drivers/mmc/host/mmci.c +++ b/drivers/mmc/host/mmci.c @@ -23,6 +23,7 @@ #include #include #include +#include #include #include #include @@ -1326,35 +1327,18 @@ static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) pm_runtime_put_autosuspend(mmc_dev(mmc)); } -static int mmci_get_ro(struct mmc_host *mmc) -{ - struct mmci_host *host = mmc_priv(mmc); - - if (host->gpio_wp == -ENOSYS) - return -ENOSYS; - - return gpio_get_value_cansleep(host->gpio_wp); -} - static int mmci_get_cd(struct mmc_host *mmc) { struct mmci_host *host = mmc_priv(mmc); struct mmci_platform_data *plat = host->plat; - unsigned int status; + unsigned int status = mmc_gpio_get_cd(mmc); - if (host->gpio_cd == -ENOSYS) { + if (status == -ENOSYS) { if (!plat->status) return 1; /* Assume always present */ status = plat->status(mmc_dev(host->mmc)); - } else - status = !!gpio_get_value_cansleep(host->gpio_cd) - ^ plat->cd_invert; - - /* - * Use positive logic throughout - status is zero for no card, - * non-zero for card inserted. - */ + } return status; } @@ -1391,21 +1375,12 @@ static int mmci_sig_volt_switch(struct mmc_host *mmc, struct mmc_ios *ios) return ret; } -static irqreturn_t mmci_cd_irq(int irq, void *dev_id) -{ - struct mmci_host *host = dev_id; - - mmc_detect_change(host->mmc, msecs_to_jiffies(500)); - - return IRQ_HANDLED; -} - static struct mmc_host_ops mmci_ops = { .request = mmci_request, .pre_req = mmci_pre_request, .post_req = mmci_post_request, .set_ios = mmci_set_ios, - .get_ro = mmci_get_ro, + .get_ro = mmc_gpio_get_ro, .get_cd = mmci_get_cd, .start_signal_voltage_switch = mmci_sig_volt_switch, }; @@ -1494,10 +1469,6 @@ static int mmci_probe(struct amba_device *dev, host = mmc_priv(mmc); host->mmc = mmc; - host->gpio_wp = -ENOSYS; - host->gpio_cd = -ENOSYS; - host->gpio_cd_irq = -1; - host->hw_designer = amba_manf(dev); host->hw_revision = amba_rev(dev); dev_dbg(mmc_dev(mmc), "designer ID = 0x%02x\n", host->hw_designer); @@ -1568,6 +1539,9 @@ static int mmci_probe(struct amba_device *dev, mmc->caps = plat->capabilities; mmc->caps2 = plat->capabilities2; + if (!plat->cd_invert) + mmc->caps2 |= MMC_CAP2_CD_ACTIVE_HIGH; + mmc->caps2 |= MMC_CAP2_RO_ACTIVE_HIGH; if (variant->busy_detect) { mmci_ops.card_busy = mmci_card_busy; @@ -1621,49 +1595,23 @@ static int mmci_probe(struct amba_device *dev, goto err_gpio_cd; } if (gpio_is_valid(plat->gpio_cd)) { - ret = gpio_request(plat->gpio_cd, DRIVER_NAME " (cd)"); - if (ret == 0) - ret = gpio_direction_input(plat->gpio_cd); - if (ret == 0) - host->gpio_cd = plat->gpio_cd; - else if (ret != -ENOSYS) + ret = mmc_gpio_request_cd(mmc, plat->gpio_cd, 0); + if (ret) goto err_gpio_cd; - - /* - * A gpio pin that will detect cards when inserted and removed - * will most likely want to trigger on the edges if it is - * 0 when ejected and 1 when inserted (or mutatis mutandis - * for the inverted case) so we request triggers on both - * edges. - */ - ret = request_any_context_irq(gpio_to_irq(plat->gpio_cd), - mmci_cd_irq, - IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, - DRIVER_NAME " (cd)", host); - if (ret >= 0) - host->gpio_cd_irq = gpio_to_irq(plat->gpio_cd); } if (plat->gpio_wp == -EPROBE_DEFER) { ret = -EPROBE_DEFER; - goto err_gpio_wp; + goto err_gpio_cd; } if (gpio_is_valid(plat->gpio_wp)) { - ret = gpio_request(plat->gpio_wp, DRIVER_NAME " (wp)"); - if (ret == 0) - ret = gpio_direction_input(plat->gpio_wp); - if (ret == 0) - host->gpio_wp = plat->gpio_wp; - else if (ret != -ENOSYS) - goto err_gpio_wp; + ret = mmc_gpio_request_ro(mmc, plat->gpio_wp); + if (ret) + goto err_gpio_cd; } - if ((host->plat->status || host->gpio_cd != -ENOSYS) - && host->gpio_cd_irq < 0) - mmc->caps |= MMC_CAP_NEEDS_POLL; - ret = request_irq(dev->irq[0], mmci_irq, IRQF_SHARED, DRIVER_NAME " (cmd)", host); if (ret) - goto unmap; + goto err_gpio_cd; if (!dev->irq[1]) host->singleirq = true; @@ -1695,14 +1643,6 @@ static int mmci_probe(struct amba_device *dev, irq0_free: free_irq(dev->irq[0], host); - unmap: - if (host->gpio_wp != -ENOSYS) - gpio_free(host->gpio_wp); - err_gpio_wp: - if (host->gpio_cd_irq >= 0) - free_irq(host->gpio_cd_irq, host); - if (host->gpio_cd != -ENOSYS) - gpio_free(host->gpio_cd); err_gpio_cd: iounmap(host->base); clk_disable: @@ -1741,13 +1681,6 @@ static int mmci_remove(struct amba_device *dev) if (!host->singleirq) free_irq(dev->irq[1], host); - if (host->gpio_wp != -ENOSYS) - gpio_free(host->gpio_wp); - if (host->gpio_cd_irq >= 0) - free_irq(host->gpio_cd_irq, host); - if (host->gpio_cd != -ENOSYS) - gpio_free(host->gpio_cd); - iounmap(host->base); clk_disable_unprepare(host->clk); diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h index 58b1b88..8fc5814 100644 --- a/drivers/mmc/host/mmci.h +++ b/drivers/mmc/host/mmci.h @@ -176,9 +176,6 @@ struct mmci_host { struct mmc_data *data; struct mmc_host *mmc; struct clk *clk; - int gpio_cd; - int gpio_wp; - int gpio_cd_irq; bool singleirq; spinlock_t lock;