From mboxrd@z Thu Jan 1 00:00:00 1970 From: s.hauer@pengutronix.de (Sascha Hauer) Date: Thu, 5 Dec 2013 14:34:50 +0100 Subject: [PATCH 5/6] mmc: mxs: use mmc_gpio_get_ro for detecting read-only status In-Reply-To: <1386250491-4708-1-git-send-email-s.hauer@pengutronix.de> References: <1386250491-4708-1-git-send-email-s.hauer@pengutronix.de> Message-ID: <1386250491-4708-6-git-send-email-s.hauer@pengutronix.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org This also fixes that the read-only gpio was used without being requested. Signed-off-by: Sascha Hauer --- drivers/mmc/host/mxs-mmc.c | 34 +++++++++++----------------------- 1 file changed, 11 insertions(+), 23 deletions(-) diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c index 3dd2f4c..13016e2 100644 --- a/drivers/mmc/host/mxs-mmc.c +++ b/drivers/mmc/host/mxs-mmc.c @@ -38,6 +38,7 @@ #include #include #include +#include #include #include #include @@ -69,26 +70,8 @@ struct mxs_mmc_host { unsigned char bus_width; spinlock_t lock; int sdio_irq_en; - int wp_gpio; - bool wp_inverted; }; -static int mxs_mmc_get_ro(struct mmc_host *mmc) -{ - struct mxs_mmc_host *host = mmc_priv(mmc); - int ret; - - if (!gpio_is_valid(host->wp_gpio)) - return -EINVAL; - - ret = gpio_get_value(host->wp_gpio); - - if (host->wp_inverted) - ret = !ret; - - return ret; -} - static int mxs_mmc_get_cd(struct mmc_host *mmc) { struct mxs_mmc_host *host = mmc_priv(mmc); @@ -551,7 +534,7 @@ static void mxs_mmc_enable_sdio_irq(struct mmc_host *mmc, int enable) static const struct mmc_host_ops mxs_mmc_ops = { .request = mxs_mmc_request, - .get_ro = mxs_mmc_get_ro, + .get_ro = mmc_gpio_get_ro, .get_cd = mxs_mmc_get_cd, .set_ios = mxs_mmc_set_ios, .enable_sdio_irq = mxs_mmc_enable_sdio_irq, @@ -585,7 +568,7 @@ static int mxs_mmc_probe(struct platform_device *pdev) struct mxs_mmc_host *host; struct mmc_host *mmc; struct resource *iores; - int ret = 0, irq_err; + int ret = 0, irq_err, gpio; struct regulator *reg_vmmc; enum of_gpio_flags flags; struct mxs_ssp *ssp; @@ -659,9 +642,14 @@ static int mxs_mmc_probe(struct platform_device *pdev) mmc->caps |= MMC_CAP_NEEDS_POLL; if (of_property_read_bool(np, "non-removable")) mmc->caps |= MMC_CAP_NONREMOVABLE; - host->wp_gpio = of_get_named_gpio_flags(np, "wp-gpios", 0, &flags); - if (flags & OF_GPIO_ACTIVE_LOW) - host->wp_inverted = 1; + gpio = of_get_named_gpio_flags(np, "wp-gpios", 0, &flags); + if (gpio_is_valid(gpio)) { + ret = mmc_gpio_request_ro(mmc, gpio); + if (ret) + goto out_clk_disable; + if (!(flags & OF_GPIO_ACTIVE_LOW)) + mmc->caps2 |= MMC_CAP2_RO_ACTIVE_HIGH; + } if (of_property_read_bool(np, "cd-inverted")) mmc->caps2 |= MMC_CAP2_CD_ACTIVE_HIGH; -- 1.8.4.3