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Commit abd37ccc authored by Sascha Hauer's avatar Sascha Hauer Committed by Chris Ball
Browse files

mmc: mxs: use mmc_gpio_get_ro for detecting read-only status 



This also fixes that the read-only gpio was used without being
requested.

Signed-off-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: default avatarChris Ball <cjb@laptop.org>
parent 6c3331d3

drivers/mmc/host/mxs-mmc.c

+11 −23
Original line number Diff line number Diff line
@@ -38,6 +38,7 @@ 
#include <linux/mmc/host.h>

#include <linux/mmc/mmc.h>

#include <linux/mmc/sdio.h>

#include <linux/mmc/slot-gpio.h>

#include <linux/gpio.h>

#include <linux/regulator/consumer.h>

#include <linux/module.h>
@@ -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;