0f12a0ce4c
The alloc() and free() hooks required each pwrseq implementation to set host->pwrseq themselves. This is error-prone and could be done at a higher level if alloc() was changed to return a pointer to a struct mmc_pwrseq instead of an error code. This patch performs this change and moves the burden of maintaining host->pwrseq from the power sequence hooks to the pwrseq code. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
46 lines
1.2 KiB
C
46 lines
1.2 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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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 (*free)(struct mmc_host *host);
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};
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struct mmc_pwrseq {
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struct mmc_pwrseq_ops *ops;
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};
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#ifdef CONFIG_OF
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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_free(struct mmc_host *host);
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struct mmc_pwrseq *mmc_pwrseq_simple_alloc(struct mmc_host *host,
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struct device *dev);
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struct mmc_pwrseq *mmc_pwrseq_emmc_alloc(struct mmc_host *host,
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struct device *dev);
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#else
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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_free(struct mmc_host *host) {}
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#endif
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#endif
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