From aa3738e9565ffb67e296483087ff1d2f116fa81a Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Wed, 16 Jan 2013 14:13:58 +0100 Subject: [PATCH] mmc: mvsdio: use slot-gpio for card detect gpio The MMC core subsystem provides in drivers/mmc/core/slot-gpio.c a nice set of helper functions to simplify the management of the card detect GPIO in MMC host drivers. This patch migrates the mvsdio driver to using those helpers, which will make the ->probe() code simpler, and therefore ease the process of adding a Device Tree binding for this driver. Signed-off-by: Thomas Petazzoni Signed-off-by: Andrew Lunn Tested-by: Stefan Peter Tested-by: Florian Fainelli Signed-off-by: Jason Cooper Signed-off-by: Chris Ball --- drivers/mmc/host/mvsdio.c | 39 +++++++++------------------------------ 1 file changed, 9 insertions(+), 30 deletions(-) diff --git a/drivers/mmc/host/mvsdio.c b/drivers/mmc/host/mvsdio.c index c6dc8fd696ab..704b7a3fe873 100644 --- a/drivers/mmc/host/mvsdio.c +++ b/drivers/mmc/host/mvsdio.c @@ -52,7 +52,6 @@ struct mvsd_host { struct mmc_host *mmc; struct device *dev; struct clk *clk; - int gpio_card_detect; }; #define mvsd_write(offs, val) writel(val, iobase + (offs)) @@ -538,13 +537,6 @@ static void mvsd_timeout_timer(unsigned long data) mmc_request_done(host->mmc, mrq); } -static irqreturn_t mvsd_card_detect_irq(int irq, void *dev) -{ - struct mvsd_host *host = dev; - mmc_detect_change(host->mmc, msecs_to_jiffies(100)); - return IRQ_HANDLED; -} - static void mvsd_enable_sdio_irq(struct mmc_host *mmc, int enable) { struct mvsd_host *host = mmc_priv(mmc); @@ -757,26 +749,11 @@ static int __init mvsd_probe(struct platform_device *pdev) if (!IS_ERR(host->clk)) clk_prepare_enable(host->clk); - if (mvsd_data->gpio_card_detect) { - ret = devm_gpio_request_one(&pdev->dev, - mvsd_data->gpio_card_detect, - GPIOF_IN, DRIVER_NAME " cd"); - if (ret == 0) { - irq = gpio_to_irq(mvsd_data->gpio_card_detect); - ret = devm_request_irq(&pdev->dev, irq, - mvsd_card_detect_irq, - IRQ_TYPE_EDGE_RISING | - IRQ_TYPE_EDGE_FALLING, - DRIVER_NAME " cd", host); - if (ret == 0) - host->gpio_card_detect = - mvsd_data->gpio_card_detect; - else - devm_gpio_free(&pdev->dev, - mvsd_data->gpio_card_detect); - } - } - if (!host->gpio_card_detect) + if (gpio_is_valid(mvsd_data->gpio_card_detect)) { + ret = mmc_gpio_request_cd(mmc, mvsd_data->gpio_card_detect); + if (ret) + goto out; + } else mmc->caps |= MMC_CAP_NEEDS_POLL; mmc_gpio_request_ro(mmc, mvsd_data->gpio_write_protect); @@ -789,15 +766,16 @@ static int __init mvsd_probe(struct platform_device *pdev) pr_notice("%s: %s driver initialized, ", mmc_hostname(mmc), DRIVER_NAME); - if (host->gpio_card_detect) + if (!(mmc->caps & MMC_CAP_NEEDS_POLL)) printk("using GPIO %d for card detection\n", - host->gpio_card_detect); + mvsd_data->gpio_card_detect); else printk("lacking card detect (fall back to polling)\n"); return 0; out: if (mmc) { + mmc_gpio_free_cd(mmc); mmc_gpio_free_ro(mmc); if (!IS_ERR(host->clk)) clk_disable_unprepare(host->clk); @@ -813,6 +791,7 @@ static int __exit mvsd_remove(struct platform_device *pdev) struct mvsd_host *host = mmc_priv(mmc); + mmc_gpio_free_cd(mmc); mmc_gpio_free_ro(mmc); mmc_remove_host(mmc); del_timer_sync(&host->timer); -- 2.20.1