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Commit 842f4bdd authored by Adrian Hunter's avatar Adrian Hunter Committed by Chris Ball
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mmc: slot-gpio: Record GPIO descriptors instead of GPIO numbers 



In preparation for adding a descriptor-based CD GPIO API, switch from
recording GPIO numbers to recording GPIO descriptors.

Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Tested-by: default avatarJaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: default avatarChris Ball <chris@printf.net>
parent 2b5cc851

drivers/mmc/core/slot-gpio.c

+27 −18
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ 


#include <linux/err.h>

#include <linux/gpio.h>

#include <linux/gpio/consumer.h>

#include <linux/interrupt.h>

#include <linux/jiffies.h>

#include <linux/mmc/host.h>
@@ -18,8 +19,10 @@ 
#include <linux/slab.h>



struct mmc_gpio {

	int ro_gpio;

	int cd_gpio;

	struct gpio_desc *ro_gpio;

	struct gpio_desc *cd_gpio;

	bool override_ro_active_level;

	bool override_cd_active_level;

	char *ro_label;

	char cd_label[0];

};
@@ -57,8 +60,6 @@ static int mmc_gpio_alloc(struct mmc_host *host) 
			ctx->ro_label = ctx->cd_label + len;

			snprintf(ctx->cd_label, len, "%s cd", dev_name(host->parent));

			snprintf(ctx->ro_label, len, "%s ro", dev_name(host->parent));

			ctx->cd_gpio = -EINVAL;

			ctx->ro_gpio = -EINVAL;

			host->slot.handler_priv = ctx;

		}

	}
@@ -72,11 +73,14 @@ int mmc_gpio_get_ro(struct mmc_host *host) 
{

	struct mmc_gpio *ctx = host->slot.handler_priv;



	if (!ctx || !gpio_is_valid(ctx->ro_gpio))

	if (!ctx || !ctx->ro_gpio)

		return -ENOSYS;



	return !gpio_get_value_cansleep(ctx->ro_gpio) ^

	if (ctx->override_ro_active_level)

		return !gpiod_get_raw_value_cansleep(ctx->ro_gpio) ^

			!!(host->caps2 & MMC_CAP2_RO_ACTIVE_HIGH);



	return gpiod_get_value_cansleep(ctx->ro_gpio);

}

EXPORT_SYMBOL(mmc_gpio_get_ro);
@@ -84,11 +88,14 @@ int mmc_gpio_get_cd(struct mmc_host *host) 
{

	struct mmc_gpio *ctx = host->slot.handler_priv;



	if (!ctx || !gpio_is_valid(ctx->cd_gpio))

	if (!ctx || !ctx->cd_gpio)

		return -ENOSYS;



	return !gpio_get_value_cansleep(ctx->cd_gpio) ^

	if (ctx->override_cd_active_level)

		return !gpiod_get_raw_value_cansleep(ctx->cd_gpio) ^

			!!(host->caps2 & MMC_CAP2_CD_ACTIVE_HIGH);



	return gpiod_get_value_cansleep(ctx->cd_gpio);

}

EXPORT_SYMBOL(mmc_gpio_get_cd);
@@ -125,7 +132,8 @@ int mmc_gpio_request_ro(struct mmc_host *host, unsigned int gpio) 
	if (ret < 0)

		return ret;



	ctx->ro_gpio = gpio;

	ctx->override_ro_active_level = true;

	ctx->ro_gpio = gpio_to_desc(gpio);



	return 0;

}
@@ -201,7 +209,8 @@ int mmc_gpio_request_cd(struct mmc_host *host, unsigned int gpio, 
	if (irq < 0)

		host->caps |= MMC_CAP_NEEDS_POLL;



	ctx->cd_gpio = gpio;

	ctx->override_cd_active_level = true;

	ctx->cd_gpio = gpio_to_desc(gpio);



	return 0;

}
@@ -219,11 +228,11 @@ void mmc_gpio_free_ro(struct mmc_host *host) 
	struct mmc_gpio *ctx = host->slot.handler_priv;

	int gpio;



	if (!ctx || !gpio_is_valid(ctx->ro_gpio))

	if (!ctx || !ctx->ro_gpio)

		return;



	gpio = ctx->ro_gpio;

	ctx->ro_gpio = -EINVAL;

	gpio = desc_to_gpio(ctx->ro_gpio);

	ctx->ro_gpio = NULL;



	devm_gpio_free(&host->class_dev, gpio);

}
@@ -241,7 +250,7 @@ void mmc_gpio_free_cd(struct mmc_host *host) 
	struct mmc_gpio *ctx = host->slot.handler_priv;

	int gpio;



	if (!ctx || !gpio_is_valid(ctx->cd_gpio))

	if (!ctx || !ctx->cd_gpio)

		return;



	if (host->slot.cd_irq >= 0) {
@@ -249,8 +258,8 @@ void mmc_gpio_free_cd(struct mmc_host *host) 
		host->slot.cd_irq = -EINVAL;

	}



	gpio = ctx->cd_gpio;

	ctx->cd_gpio = -EINVAL;

	gpio = desc_to_gpio(ctx->cd_gpio);

	ctx->cd_gpio = NULL;



	devm_gpio_free(&host->class_dev, gpio);

}