2 * linux/drivers/mmc/core/core.h
4 * Copyright (C) 2003 Russell King, All Rights Reserved.
5 * Copyright 2007 Pierre Ossman
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
11 #ifndef _MMC_CORE_CORE_H
12 #define _MMC_CORE_CORE_H
14 #include <linux/delay.h>
15 #include <linux/sched.h>
21 #define MMC_CMD_RETRIES 3
24 void (*remove)(struct mmc_host *);
25 void (*detect)(struct mmc_host *);
26 int (*pre_suspend)(struct mmc_host *);
27 int (*suspend)(struct mmc_host *);
28 int (*resume)(struct mmc_host *);
29 int (*runtime_suspend)(struct mmc_host *);
30 int (*runtime_resume)(struct mmc_host *);
31 int (*alive)(struct mmc_host *);
32 int (*shutdown)(struct mmc_host *);
33 int (*hw_reset)(struct mmc_host *);
34 int (*sw_reset)(struct mmc_host *);
35 bool (*cache_enabled)(struct mmc_host *);
38 void mmc_attach_bus(struct mmc_host *host, const struct mmc_bus_ops *ops);
39 void mmc_detach_bus(struct mmc_host *host);
41 struct device_node *mmc_of_find_child_device(struct mmc_host *host,
44 void mmc_init_erase(struct mmc_card *card);
46 void mmc_set_chip_select(struct mmc_host *host, int mode);
47 void mmc_set_clock(struct mmc_host *host, unsigned int hz);
48 void mmc_set_bus_mode(struct mmc_host *host, unsigned int mode);
49 void mmc_set_bus_width(struct mmc_host *host, unsigned int width);
50 u32 mmc_select_voltage(struct mmc_host *host, u32 ocr);
51 int mmc_set_uhs_voltage(struct mmc_host *host, u32 ocr);
52 int mmc_host_set_uhs_voltage(struct mmc_host *host);
53 int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage);
54 void mmc_set_initial_signal_voltage(struct mmc_host *host);
55 void mmc_set_timing(struct mmc_host *host, unsigned int timing);
56 void mmc_set_driver_type(struct mmc_host *host, unsigned int drv_type);
57 int mmc_select_drive_strength(struct mmc_card *card, unsigned int max_dtr,
58 int card_drv_type, int *drv_type);
59 void mmc_power_up(struct mmc_host *host, u32 ocr);
60 void mmc_power_off(struct mmc_host *host);
61 void mmc_power_cycle(struct mmc_host *host, u32 ocr);
62 void mmc_set_initial_state(struct mmc_host *host);
64 static inline void mmc_delay(unsigned int ms)
67 usleep_range(ms * 1000, ms * 1250);
72 void mmc_rescan(struct work_struct *work);
73 void mmc_start_host(struct mmc_host *host);
74 void mmc_stop_host(struct mmc_host *host);
76 int _mmc_detect_card_removed(struct mmc_host *host);
77 int mmc_detect_card_removed(struct mmc_host *host);
79 int mmc_attach_mmc(struct mmc_host *host);
80 int mmc_attach_sd(struct mmc_host *host);
81 int mmc_attach_sdio(struct mmc_host *host);
83 /* Module parameters */
84 extern bool use_spi_crc;
86 /* Debugfs information for hosts and cards */
87 void mmc_add_host_debugfs(struct mmc_host *host);
88 void mmc_remove_host_debugfs(struct mmc_host *host);
90 void mmc_add_card_debugfs(struct mmc_card *card);
91 void mmc_remove_card_debugfs(struct mmc_card *card);
93 int mmc_execute_tuning(struct mmc_card *card);
94 int mmc_hs200_to_hs400(struct mmc_card *card);
95 int mmc_hs400_to_hs200(struct mmc_card *card);
97 #ifdef CONFIG_PM_SLEEP
98 void mmc_register_pm_notifier(struct mmc_host *host);
99 void mmc_unregister_pm_notifier(struct mmc_host *host);
101 static inline void mmc_register_pm_notifier(struct mmc_host *host) { }
102 static inline void mmc_unregister_pm_notifier(struct mmc_host *host) { }
105 void mmc_wait_for_req_done(struct mmc_host *host, struct mmc_request *mrq);
106 bool mmc_is_req_done(struct mmc_host *host, struct mmc_request *mrq);
108 int mmc_start_request(struct mmc_host *host, struct mmc_request *mrq);
110 int mmc_erase(struct mmc_card *card, unsigned int from, unsigned int nr,
112 int mmc_can_erase(struct mmc_card *card);
113 int mmc_can_trim(struct mmc_card *card);
114 int mmc_can_discard(struct mmc_card *card);
115 int mmc_can_sanitize(struct mmc_card *card);
116 int mmc_can_secure_erase_trim(struct mmc_card *card);
117 int mmc_erase_group_aligned(struct mmc_card *card, unsigned int from,
119 unsigned int mmc_calc_max_discard(struct mmc_card *card);
121 int mmc_set_blocklen(struct mmc_card *card, unsigned int blocklen);
122 int mmc_set_blockcount(struct mmc_card *card, unsigned int blockcount,
125 int __mmc_claim_host(struct mmc_host *host, struct mmc_ctx *ctx,
127 void mmc_release_host(struct mmc_host *host);
128 void mmc_get_card(struct mmc_card *card, struct mmc_ctx *ctx);
129 void mmc_put_card(struct mmc_card *card, struct mmc_ctx *ctx);
132 * mmc_claim_host - exclusively claim a host
133 * @host: mmc host to claim
135 * Claim a host for a set of operations.
137 static inline void mmc_claim_host(struct mmc_host *host)
139 __mmc_claim_host(host, NULL, NULL);
142 int mmc_cqe_start_req(struct mmc_host *host, struct mmc_request *mrq);
143 void mmc_cqe_post_req(struct mmc_host *host, struct mmc_request *mrq);
144 int mmc_cqe_recovery(struct mmc_host *host);
147 * mmc_pre_req - Prepare for a new request
148 * @host: MMC host to prepare command
149 * @mrq: MMC request to prepare for
151 * mmc_pre_req() is called in prior to mmc_start_req() to let
152 * host prepare for the new request. Preparation of a request may be
153 * performed while another request is running on the host.
155 static inline void mmc_pre_req(struct mmc_host *host, struct mmc_request *mrq)
157 if (host->ops->pre_req)
158 host->ops->pre_req(host, mrq);
162 * mmc_post_req - Post process a completed request
163 * @host: MMC host to post process command
164 * @mrq: MMC request to post process for
165 * @err: Error, if non zero, clean up any resources made in pre_req
167 * Let the host post process a completed request. Post processing of
168 * a request may be performed while another request is running.
170 static inline void mmc_post_req(struct mmc_host *host, struct mmc_request *mrq,
173 if (host->ops->post_req)
174 host->ops->post_req(host, mrq, err);
177 static inline bool mmc_cache_enabled(struct mmc_host *host)
179 if (host->bus_ops->cache_enabled)
180 return host->bus_ops->cache_enabled(host);