xref: /openbmc/linux/drivers/mmc/core/pwrseq.h (revision 4f3db074)
1 /*
2  * Copyright (C) 2014 Linaro Ltd
3  *
4  * Author: Ulf Hansson <ulf.hansson@linaro.org>
5  *
6  * License terms: GNU General Public License (GPL) version 2
7  */
8 #ifndef _MMC_CORE_PWRSEQ_H
9 #define _MMC_CORE_PWRSEQ_H
10 
11 struct mmc_pwrseq_ops {
12 	void (*pre_power_on)(struct mmc_host *host);
13 	void (*post_power_on)(struct mmc_host *host);
14 	void (*power_off)(struct mmc_host *host);
15 	void (*free)(struct mmc_host *host);
16 };
17 
18 struct mmc_pwrseq {
19 	struct mmc_pwrseq_ops *ops;
20 };
21 
22 #ifdef CONFIG_OF
23 
24 int mmc_pwrseq_alloc(struct mmc_host *host);
25 void mmc_pwrseq_pre_power_on(struct mmc_host *host);
26 void mmc_pwrseq_post_power_on(struct mmc_host *host);
27 void mmc_pwrseq_power_off(struct mmc_host *host);
28 void mmc_pwrseq_free(struct mmc_host *host);
29 
30 struct mmc_pwrseq *mmc_pwrseq_simple_alloc(struct mmc_host *host,
31 					   struct device *dev);
32 struct mmc_pwrseq *mmc_pwrseq_emmc_alloc(struct mmc_host *host,
33 					 struct device *dev);
34 
35 #else
36 
37 static inline int mmc_pwrseq_alloc(struct mmc_host *host) { return 0; }
38 static inline void mmc_pwrseq_pre_power_on(struct mmc_host *host) {}
39 static inline void mmc_pwrseq_post_power_on(struct mmc_host *host) {}
40 static inline void mmc_pwrseq_power_off(struct mmc_host *host) {}
41 static inline void mmc_pwrseq_free(struct mmc_host *host) {}
42 
43 #endif
44 
45 #endif
46