1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * linux/drivers/mmc/core/core.h
5 * Copyright (C) 2003 Russell King, All Rights Reserved.
6 * Copyright 2007 Pierre Ossman
8 #ifndef _MMC_CORE_CORE_H
9 #define _MMC_CORE_CORE_H
11 #include <linux/delay.h>
12 #include <linux/sched.h>
18 #define MMC_CMD_RETRIES 3
21 void (*remove)(struct mmc_host *);
22 void (*detect)(struct mmc_host *);
23 int (*pre_suspend)(struct mmc_host *);
24 int (*suspend)(struct mmc_host *);
25 int (*resume)(struct mmc_host *);
26 int (*runtime_suspend)(struct mmc_host *);
27 int (*runtime_resume)(struct mmc_host *);
28 int (*alive)(struct mmc_host *);
29 int (*shutdown)(struct mmc_host *);
30 int (*hw_reset)(struct mmc_host *);
31 int (*sw_reset)(struct mmc_host *);
32 bool (*cache_enabled)(struct mmc_host *);
35 void mmc_attach_bus(struct mmc_host *host, const struct mmc_bus_ops *ops);
36 void mmc_detach_bus(struct mmc_host *host);
38 struct device_node *mmc_of_find_child_device(struct mmc_host *host,
41 void mmc_init_erase(struct mmc_card *card);
43 void mmc_set_chip_select(struct mmc_host *host, int mode);
44 void mmc_set_clock(struct mmc_host *host, unsigned int hz);
45 void mmc_set_bus_mode(struct mmc_host *host, unsigned int mode);
46 void mmc_set_bus_width(struct mmc_host *host, unsigned int width);
47 u32 mmc_select_voltage(struct mmc_host *host, u32 ocr);
48 int mmc_set_uhs_voltage(struct mmc_host *host, u32 ocr);
49 int mmc_host_set_uhs_voltage(struct mmc_host *host);
50 int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage);
51 void mmc_set_initial_signal_voltage(struct mmc_host *host);
52 void mmc_set_timing(struct mmc_host *host, unsigned int timing);
53 void mmc_set_driver_type(struct mmc_host *host, unsigned int drv_type);
54 int mmc_select_drive_strength(struct mmc_card *card, unsigned int max_dtr,
55 int card_drv_type, int *drv_type);
56 void mmc_power_up(struct mmc_host *host, u32 ocr);
57 void mmc_power_off(struct mmc_host *host);
58 void mmc_power_cycle(struct mmc_host *host, u32 ocr);
59 void mmc_set_initial_state(struct mmc_host *host);
60 u32 mmc_vddrange_to_ocrmask(int vdd_min, int vdd_max);
62 static inline void mmc_delay(unsigned int ms)
65 usleep_range(ms * 1000, ms * 1250);
70 void mmc_rescan(struct work_struct *work);
71 void mmc_start_host(struct mmc_host *host);
72 void mmc_stop_host(struct mmc_host *host);
74 void _mmc_detect_change(struct mmc_host *host, unsigned long delay,
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 void mmc_wait_for_req_done(struct mmc_host *host, struct mmc_request *mrq);
98 bool mmc_is_req_done(struct mmc_host *host, struct mmc_request *mrq);
100 int mmc_start_request(struct mmc_host *host, struct mmc_request *mrq);
102 int mmc_erase(struct mmc_card *card, unsigned int from, unsigned int nr,
104 int mmc_can_erase(struct mmc_card *card);
105 int mmc_can_trim(struct mmc_card *card);
106 int mmc_can_discard(struct mmc_card *card);
107 int mmc_can_sanitize(struct mmc_card *card);
108 int mmc_can_secure_erase_trim(struct mmc_card *card);
109 int mmc_erase_group_aligned(struct mmc_card *card, unsigned int from,
111 unsigned int mmc_calc_max_discard(struct mmc_card *card);
113 int mmc_set_blocklen(struct mmc_card *card, unsigned int blocklen);
115 int __mmc_claim_host(struct mmc_host *host, struct mmc_ctx *ctx,
117 void mmc_release_host(struct mmc_host *host);
118 void mmc_get_card(struct mmc_card *card, struct mmc_ctx *ctx);
119 void mmc_put_card(struct mmc_card *card, struct mmc_ctx *ctx);
122 * mmc_claim_host - exclusively claim a host
123 * @host: mmc host to claim
125 * Claim a host for a set of operations.
127 static inline void mmc_claim_host(struct mmc_host *host)
129 __mmc_claim_host(host, NULL, NULL);
132 int mmc_cqe_start_req(struct mmc_host *host, struct mmc_request *mrq);
133 void mmc_cqe_post_req(struct mmc_host *host, struct mmc_request *mrq);
134 int mmc_cqe_recovery(struct mmc_host *host);
137 * mmc_pre_req - Prepare for a new request
138 * @host: MMC host to prepare command
139 * @mrq: MMC request to prepare for
141 * mmc_pre_req() is called in prior to mmc_start_req() to let
142 * host prepare for the new request. Preparation of a request may be
143 * performed while another request is running on the host.
145 static inline void mmc_pre_req(struct mmc_host *host, struct mmc_request *mrq)
147 if (host->ops->pre_req)
148 host->ops->pre_req(host, mrq);
152 * mmc_post_req - Post process a completed request
153 * @host: MMC host to post process command
154 * @mrq: MMC request to post process for
155 * @err: Error, if non zero, clean up any resources made in pre_req
157 * Let the host post process a completed request. Post processing of
158 * a request may be performed while another request is running.
160 static inline void mmc_post_req(struct mmc_host *host, struct mmc_request *mrq,
163 if (host->ops->post_req)
164 host->ops->post_req(host, mrq, err);
167 static inline bool mmc_cache_enabled(struct mmc_host *host)
169 if (host->bus_ops->cache_enabled)
170 return host->bus_ops->cache_enabled(host);