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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 (*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};
36
37void mmc_attach_bus(struct mmc_host *host, const struct mmc_bus_ops *ops);
38void mmc_detach_bus(struct mmc_host *host);
39
40struct device_node *mmc_of_find_child_device(struct mmc_host *host,
41 unsigned func_num);
42
43void mmc_init_erase(struct mmc_card *card);
44
45void mmc_set_chip_select(struct mmc_host *host, int mode);
46void mmc_set_clock(struct mmc_host *host, unsigned int hz);
47void mmc_set_bus_mode(struct mmc_host *host, unsigned int mode);
48void mmc_set_bus_width(struct mmc_host *host, unsigned int width);
49u32 mmc_select_voltage(struct mmc_host *host, u32 ocr);
50int mmc_set_uhs_voltage(struct mmc_host *host, u32 ocr);
51int mmc_host_set_uhs_voltage(struct mmc_host *host);
52int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage);
53void mmc_set_initial_signal_voltage(struct mmc_host *host);
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);
62u32 mmc_vddrange_to_ocrmask(int vdd_min, int vdd_max);
63
64static inline void mmc_delay(unsigned int ms)
65{
66 if (ms <= 20)
67 usleep_range(ms * 1000, ms * 1250);
68 else
69 msleep(ms);
70}
71
72void mmc_rescan(struct work_struct *work);
73void mmc_start_host(struct mmc_host *host);
74void mmc_stop_host(struct mmc_host *host);
75
76int _mmc_detect_card_removed(struct mmc_host *host);
77int mmc_detect_card_removed(struct mmc_host *host);
78
79int mmc_attach_mmc(struct mmc_host *host);
80int mmc_attach_sd(struct mmc_host *host);
81int mmc_attach_sdio(struct mmc_host *host);
82
83/* Module parameters */
84extern bool use_spi_crc;
85
86/* Debugfs information for hosts and cards */
87void mmc_add_host_debugfs(struct mmc_host *host);
88void mmc_remove_host_debugfs(struct mmc_host *host);
89
90void mmc_add_card_debugfs(struct mmc_card *card);
91void mmc_remove_card_debugfs(struct mmc_card *card);
92
93int mmc_execute_tuning(struct mmc_card *card);
94int mmc_hs200_to_hs400(struct mmc_card *card);
95int mmc_hs400_to_hs200(struct mmc_card *card);
96
97#ifdef CONFIG_PM_SLEEP
98void mmc_register_pm_notifier(struct mmc_host *host);
99void mmc_unregister_pm_notifier(struct mmc_host *host);
100#else
101static inline void mmc_register_pm_notifier(struct mmc_host *host) { }
102static inline void mmc_unregister_pm_notifier(struct mmc_host *host) { }
103#endif
104
105void mmc_wait_for_req_done(struct mmc_host *host, struct mmc_request *mrq);
106bool mmc_is_req_done(struct mmc_host *host, struct mmc_request *mrq);
107
108int mmc_start_request(struct mmc_host *host, struct mmc_request *mrq);
109
110int mmc_erase(struct mmc_card *card, unsigned int from, unsigned int nr,
111 unsigned int arg);
112int mmc_can_erase(struct mmc_card *card);
113int mmc_can_trim(struct mmc_card *card);
114int mmc_can_discard(struct mmc_card *card);
115int mmc_can_sanitize(struct mmc_card *card);
116int mmc_can_secure_erase_trim(struct mmc_card *card);
117int mmc_erase_group_aligned(struct mmc_card *card, unsigned int from,
118 unsigned int nr);
119unsigned int mmc_calc_max_discard(struct mmc_card *card);
120
121int mmc_set_blocklen(struct mmc_card *card, unsigned int blocklen);
122
123int __mmc_claim_host(struct mmc_host *host, struct mmc_ctx *ctx,
124 atomic_t *abort);
125void mmc_release_host(struct mmc_host *host);
126void mmc_get_card(struct mmc_card *card, struct mmc_ctx *ctx);
127void mmc_put_card(struct mmc_card *card, struct mmc_ctx *ctx);
128
129/**
130 * mmc_claim_host - exclusively claim a host
131 * @host: mmc host to claim
132 *
133 * Claim a host for a set of operations.
134 */
135static inline void mmc_claim_host(struct mmc_host *host)
136{
137 __mmc_claim_host(host, NULL, NULL);
138}
139
140int mmc_cqe_start_req(struct mmc_host *host, struct mmc_request *mrq);
141void mmc_cqe_post_req(struct mmc_host *host, struct mmc_request *mrq);
142int mmc_cqe_recovery(struct mmc_host *host);
143
144/**
145 * mmc_pre_req - Prepare for a new request
146 * @host: MMC host to prepare command
147 * @mrq: MMC request to prepare for
148 *
149 * mmc_pre_req() is called in prior to mmc_start_req() to let
150 * host prepare for the new request. Preparation of a request may be
151 * performed while another request is running on the host.
152 */
153static inline void mmc_pre_req(struct mmc_host *host, struct mmc_request *mrq)
154{
155 if (host->ops->pre_req)
156 host->ops->pre_req(host, mrq);
157}
158
159/**
160 * mmc_post_req - Post process a completed request
161 * @host: MMC host to post process command
162 * @mrq: MMC request to post process for
163 * @err: Error, if non zero, clean up any resources made in pre_req
164 *
165 * Let the host post process a completed request. Post processing of
166 * a request may be performed while another request is running.
167 */
168static inline void mmc_post_req(struct mmc_host *host, struct mmc_request *mrq,
169 int err)
170{
171 if (host->ops->post_req)
172 host->ops->post_req(host, mrq, err);
173}
174
175#endif