v4.19.13 snapshot.
diff --git a/include/linux/mmc/slot-gpio.h b/include/linux/mmc/slot-gpio.h
new file mode 100644
index 0000000..06607c5
--- /dev/null
+++ b/include/linux/mmc/slot-gpio.h
@@ -0,0 +1,39 @@
+/*
+ * Generic GPIO card-detect helper header
+ *
+ * Copyright (C) 2011, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef MMC_SLOT_GPIO_H
+#define MMC_SLOT_GPIO_H
+
+#include <linux/types.h>
+#include <linux/irqreturn.h>
+
+struct mmc_host;
+
+int mmc_gpio_get_ro(struct mmc_host *host);
+int mmc_gpio_request_ro(struct mmc_host *host, unsigned int gpio);
+
+int mmc_gpio_get_cd(struct mmc_host *host);
+int mmc_gpio_request_cd(struct mmc_host *host, unsigned int gpio,
+ unsigned int debounce);
+
+int mmc_gpiod_request_cd(struct mmc_host *host, const char *con_id,
+ unsigned int idx, bool override_active_level,
+ unsigned int debounce, bool *gpio_invert);
+int mmc_gpiod_request_ro(struct mmc_host *host, const char *con_id,
+ unsigned int idx, bool override_active_level,
+ unsigned int debounce, bool *gpio_invert);
+void mmc_gpio_set_cd_isr(struct mmc_host *host,
+ irqreturn_t (*isr)(int irq, void *dev_id));
+int mmc_gpio_set_cd_wake(struct mmc_host *host, bool on);
+void mmc_gpiod_request_cd_irq(struct mmc_host *host);
+bool mmc_can_gpio_cd(struct mmc_host *host);
+bool mmc_can_gpio_ro(struct mmc_host *host);
+
+#endif