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88f94c782b
On certain platforms like Amlogic Meson gpiod_to_irq() isn't supported due to the design of gpio / interrupt controller. Therefore provide an option for drivers to pass the card detect interrupt number (retrieved e.g. from device tree) to mmc core. Suggested-by refers to the mechanism to pass and store the interrupt. Suggested-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Link: https://lore.kernel.org/r/5777f38b-465f-ce48-a87f-5eb8b3c57b0a@gmail.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
31 lines
1,000 B
C
31 lines
1,000 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Generic GPIO card-detect helper header
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*
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* Copyright (C) 2011, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
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*/
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#ifndef MMC_SLOT_GPIO_H
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#define MMC_SLOT_GPIO_H
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#include <linux/types.h>
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#include <linux/irqreturn.h>
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struct mmc_host;
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int mmc_gpio_get_ro(struct mmc_host *host);
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int mmc_gpio_get_cd(struct mmc_host *host);
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void mmc_gpio_set_cd_irq(struct mmc_host *host, int irq);
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int mmc_gpiod_request_cd(struct mmc_host *host, const char *con_id,
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unsigned int idx, bool override_active_level,
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unsigned int debounce);
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int mmc_gpiod_request_ro(struct mmc_host *host, const char *con_id,
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unsigned int idx, unsigned int debounce);
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void mmc_gpio_set_cd_isr(struct mmc_host *host,
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irqreturn_t (*isr)(int irq, void *dev_id));
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int mmc_gpio_set_cd_wake(struct mmc_host *host, bool on);
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void mmc_gpiod_request_cd_irq(struct mmc_host *host);
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bool mmc_can_gpio_cd(struct mmc_host *host);
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bool mmc_can_gpio_ro(struct mmc_host *host);
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#endif
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