9d2fa2428a
This makes it possible to get the write protect (read only) GPIO line from a GPIO descriptor. Written to exactly mirror the card detect function. Acked-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
35 lines
1.1 KiB
C
35 lines
1.1 KiB
C
/*
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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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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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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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struct mmc_host;
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int mmc_gpio_get_ro(struct mmc_host *host);
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int mmc_gpio_request_ro(struct mmc_host *host, unsigned int gpio);
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void mmc_gpio_free_ro(struct mmc_host *host);
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int mmc_gpio_get_cd(struct mmc_host *host);
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int mmc_gpio_request_cd(struct mmc_host *host, unsigned int gpio,
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unsigned int debounce);
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void mmc_gpio_free_cd(struct mmc_host *host);
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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, bool override_active_level,
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unsigned int debounce);
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void mmc_gpiod_free_cd(struct mmc_host *host);
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void mmc_gpiod_request_cd_irq(struct mmc_host *host);
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#endif
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