tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * linux/drivers/mmc/core/core.h
3 *
4 * Copyright (C) 2003 Russell King, All Rights Reserved.
5 * Copyright 2007 Pierre Ossman
6 *
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.
10 */
11#ifndef _MMC_CORE_CORE_H
12#define _MMC_CORE_CORE_H
13
14#include <linux/delay.h>
15#include <linux/sched.h>
16
17struct mmc_host;
18struct mmc_card;
19struct mmc_request;
20
21#define MMC_CMD_RETRIES 3
22
23struct mmc_bus_ops {
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 (*power_save)(struct mmc_host *);
32 int (*power_restore)(struct mmc_host *);
33 int (*alive)(struct mmc_host *);
34 int (*shutdown)(struct mmc_host *);
35 int (*reset)(struct mmc_host *);
36};
37
38void mmc_attach_bus(struct mmc_host *host, const struct mmc_bus_ops *ops);
39void mmc_detach_bus(struct mmc_host *host);
40
41struct device_node *mmc_of_find_child_device(struct mmc_host *host,
42 unsigned func_num);
43
44void mmc_init_erase(struct mmc_card *card);
45
46void mmc_set_chip_select(struct mmc_host *host, int mode);
47void mmc_set_clock(struct mmc_host *host, unsigned int hz);
48void mmc_set_bus_mode(struct mmc_host *host, unsigned int mode);
49void mmc_set_bus_width(struct mmc_host *host, unsigned int width);
50u32 mmc_select_voltage(struct mmc_host *host, u32 ocr);
51int mmc_set_uhs_voltage(struct mmc_host *host, u32 ocr);
52int mmc_host_set_uhs_voltage(struct mmc_host *host);
53int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage);
54void mmc_set_timing(struct mmc_host *host, unsigned int timing);
55void mmc_set_driver_type(struct mmc_host *host, unsigned int drv_type);
56int mmc_select_drive_strength(struct mmc_card *card, unsigned int max_dtr,
57 int card_drv_type, int *drv_type);
58void mmc_power_up(struct mmc_host *host, u32 ocr);
59void mmc_power_off(struct mmc_host *host);
60void mmc_power_cycle(struct mmc_host *host, u32 ocr);
61void mmc_set_initial_state(struct mmc_host *host);
62
63static inline void mmc_delay(unsigned int ms)
64{
65 if (ms < 1000 / HZ) {
66 cond_resched();
67 mdelay(ms);
68 } else {
69 msleep(ms);
70 }
71}
72
73void mmc_rescan(struct work_struct *work);
74void mmc_start_host(struct mmc_host *host);
75void mmc_stop_host(struct mmc_host *host);
76
77int _mmc_detect_card_removed(struct mmc_host *host);
78int mmc_detect_card_removed(struct mmc_host *host);
79
80int mmc_attach_mmc(struct mmc_host *host);
81int mmc_attach_sd(struct mmc_host *host);
82int mmc_attach_sdio(struct mmc_host *host);
83
84/* Module parameters */
85extern bool use_spi_crc;
86
87/* Debugfs information for hosts and cards */
88void mmc_add_host_debugfs(struct mmc_host *host);
89void mmc_remove_host_debugfs(struct mmc_host *host);
90
91void mmc_add_card_debugfs(struct mmc_card *card);
92void mmc_remove_card_debugfs(struct mmc_card *card);
93
94void mmc_init_context_info(struct mmc_host *host);
95
96int mmc_execute_tuning(struct mmc_card *card);
97int mmc_hs200_to_hs400(struct mmc_card *card);
98int mmc_hs400_to_hs200(struct mmc_card *card);
99
100#ifdef CONFIG_PM_SLEEP
101void mmc_register_pm_notifier(struct mmc_host *host);
102void mmc_unregister_pm_notifier(struct mmc_host *host);
103#else
104static inline void mmc_register_pm_notifier(struct mmc_host *host) { }
105static inline void mmc_unregister_pm_notifier(struct mmc_host *host) { }
106#endif
107
108void mmc_wait_for_req_done(struct mmc_host *host, struct mmc_request *mrq);
109bool mmc_is_req_done(struct mmc_host *host, struct mmc_request *mrq);
110
111int mmc_start_request(struct mmc_host *host, struct mmc_request *mrq);
112
113struct mmc_async_req;
114
115struct mmc_async_req *mmc_start_areq(struct mmc_host *host,
116 struct mmc_async_req *areq,
117 enum mmc_blk_status *ret_stat);
118
119int mmc_erase(struct mmc_card *card, unsigned int from, unsigned int nr,
120 unsigned int arg);
121int mmc_can_erase(struct mmc_card *card);
122int mmc_can_trim(struct mmc_card *card);
123int mmc_can_discard(struct mmc_card *card);
124int mmc_can_sanitize(struct mmc_card *card);
125int mmc_can_secure_erase_trim(struct mmc_card *card);
126int mmc_erase_group_aligned(struct mmc_card *card, unsigned int from,
127 unsigned int nr);
128unsigned int mmc_calc_max_discard(struct mmc_card *card);
129
130int mmc_set_blocklen(struct mmc_card *card, unsigned int blocklen);
131int mmc_set_blockcount(struct mmc_card *card, unsigned int blockcount,
132 bool is_rel_write);
133
134int __mmc_claim_host(struct mmc_host *host, struct mmc_ctx *ctx,
135 atomic_t *abort);
136void mmc_release_host(struct mmc_host *host);
137void mmc_get_card(struct mmc_card *card, struct mmc_ctx *ctx);
138void mmc_put_card(struct mmc_card *card, struct mmc_ctx *ctx);
139
140/**
141 * mmc_claim_host - exclusively claim a host
142 * @host: mmc host to claim
143 *
144 * Claim a host for a set of operations.
145 */
146static inline void mmc_claim_host(struct mmc_host *host)
147{
148 __mmc_claim_host(host, NULL, NULL);
149}
150
151int mmc_cqe_start_req(struct mmc_host *host, struct mmc_request *mrq);
152void mmc_cqe_post_req(struct mmc_host *host, struct mmc_request *mrq);
153int mmc_cqe_recovery(struct mmc_host *host);
154
155#endif