forked from mirrors/linux
773a9ef85f
The ->reset() callback is needed to implement a better support for eMMC HW reset. The following changes will take advantage of the new callback. Suggested-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
59 lines
1.6 KiB
C
59 lines
1.6 KiB
C
/*
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* Copyright (C) 2014 Linaro Ltd
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*
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* Author: Ulf Hansson <ulf.hansson@linaro.org>
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*
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* License terms: GNU General Public License (GPL) version 2
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*/
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#ifndef _MMC_CORE_PWRSEQ_H
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#define _MMC_CORE_PWRSEQ_H
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#include <linux/types.h>
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struct mmc_host;
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struct device;
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struct module;
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struct mmc_pwrseq_ops {
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void (*pre_power_on)(struct mmc_host *host);
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void (*post_power_on)(struct mmc_host *host);
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void (*power_off)(struct mmc_host *host);
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void (*reset)(struct mmc_host *host);
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};
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struct mmc_pwrseq {
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const struct mmc_pwrseq_ops *ops;
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struct device *dev;
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struct list_head pwrseq_node;
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struct module *owner;
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};
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#ifdef CONFIG_OF
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int mmc_pwrseq_register(struct mmc_pwrseq *pwrseq);
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void mmc_pwrseq_unregister(struct mmc_pwrseq *pwrseq);
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int mmc_pwrseq_alloc(struct mmc_host *host);
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void mmc_pwrseq_pre_power_on(struct mmc_host *host);
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void mmc_pwrseq_post_power_on(struct mmc_host *host);
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void mmc_pwrseq_power_off(struct mmc_host *host);
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void mmc_pwrseq_reset(struct mmc_host *host);
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void mmc_pwrseq_free(struct mmc_host *host);
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#else
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static inline int mmc_pwrseq_register(struct mmc_pwrseq *pwrseq)
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{
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return -ENOSYS;
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}
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static inline void mmc_pwrseq_unregister(struct mmc_pwrseq *pwrseq) {}
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static inline int mmc_pwrseq_alloc(struct mmc_host *host) { return 0; }
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static inline void mmc_pwrseq_pre_power_on(struct mmc_host *host) {}
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static inline void mmc_pwrseq_post_power_on(struct mmc_host *host) {}
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static inline void mmc_pwrseq_power_off(struct mmc_host *host) {}
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static inline void mmc_pwrseq_reset(struct mmc_host *host) {}
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static inline void mmc_pwrseq_free(struct mmc_host *host) {}
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#endif
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#endif
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