Commit a1e97bd2 authored by Tony Lindgren's avatar Tony Lindgren Committed by Ulf Hansson
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mmc: sdhci-omap: Configure optional wakeirq 



Configure optional wakeirq. This may be optionally configured for SDIO
dat1 pin for wake-up events for SoCs that support deeper idle states.

Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20211015104720.52240-7-tony@atomide.com


Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent 3edf588e

drivers/mmc/host/sdhci-omap.c

+24 −0
Original line number Diff line number Diff line
@@ -12,8 +12,10 @@ 
#include <linux/module.h>

#include <linux/of.h>

#include <linux/of_device.h>

#include <linux/of_irq.h>

#include <linux/platform_device.h>

#include <linux/pm_runtime.h>

#include <linux/pm_wakeirq.h>

#include <linux/regulator/consumer.h>

#include <linux/pinctrl/consumer.h>

#include <linux/sys_soc.h>
@@ -117,6 +119,7 @@ struct sdhci_omap_host { 


	struct pinctrl		*pinctrl;

	struct pinctrl_state	**pinctrl_state;

	int			wakeirq;

	bool			is_tuning;



	/* Offset for omap specific registers from base */
@@ -1358,6 +1361,25 @@ static int sdhci_omap_probe(struct platform_device *pdev) 
	if (ret)

		goto err_cleanup_host;



	/*

	 * SDIO devices can use the dat1 pin as a wake-up interrupt. Some

	 * devices like wl1xxx, use an out-of-band GPIO interrupt instead.

	 */

	omap_host->wakeirq = of_irq_get_byname(dev->of_node, "wakeup");

	if (omap_host->wakeirq == -EPROBE_DEFER) {

		ret = -EPROBE_DEFER;

		goto err_cleanup_host;

	}

	if (omap_host->wakeirq > 0) {

		device_init_wakeup(dev, true);

		ret = dev_pm_set_dedicated_wake_irq(dev, omap_host->wakeirq);

		if (ret) {

			device_init_wakeup(dev, false);

			goto err_cleanup_host;

		}

		host->mmc->pm_caps |= MMC_PM_KEEP_POWER | MMC_PM_WAKE_SDIO_IRQ;

	}



	pm_runtime_mark_last_busy(dev);

	pm_runtime_put_autosuspend(dev);
@@ -1385,6 +1407,8 @@ static int sdhci_omap_remove(struct platform_device *pdev) 


	pm_runtime_get_sync(dev);

	sdhci_remove_host(host, true);

	device_init_wakeup(dev, false);

	dev_pm_clear_wake_irq(dev);

	pm_runtime_dont_use_autosuspend(dev);

	pm_runtime_put_sync(dev);

	/* Ensure device gets disabled despite userspace sysfs config */