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mmc: sdhci-omap: Configure optional wakeirq

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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: Tony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20211015104720.52240-7-tony@atomide.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Tony Lindgren 2021-10-15 13:47:20 +03:00 committed by Ulf Hansson
parent 3edf588e7f
commit a1e97bd2e0
1 changed files with 24 additions and 0 deletions
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24
drivers/mmc/host/sdhci-omap.c
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@ -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 */