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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
16#define MMC_CMD_RETRIES 3
17
18struct mmc_bus_ops {
19 void (*remove)(struct mmc_host *);
20 void (*detect)(struct mmc_host *);
21 int (*pre_suspend)(struct mmc_host *);
22 int (*suspend)(struct mmc_host *);
23 int (*resume)(struct mmc_host *);
24 int (*runtime_suspend)(struct mmc_host *);
25 int (*runtime_resume)(struct mmc_host *);
26 int (*power_save)(struct mmc_host *);
27 int (*power_restore)(struct mmc_host *);
28 int (*alive)(struct mmc_host *);
29 int (*shutdown)(struct mmc_host *);
30 int (*reset)(struct mmc_host *);
31};
32
33void mmc_attach_bus(struct mmc_host *host, const struct mmc_bus_ops *ops);
34void mmc_detach_bus(struct mmc_host *host);
35
36struct device_node *mmc_of_find_child_device(struct mmc_host *host,
37 unsigned func_num);
38
39void mmc_init_erase(struct mmc_card *card);
40
41void mmc_set_chip_select(struct mmc_host *host, int mode);
42void mmc_set_clock(struct mmc_host *host, unsigned int hz);
43void mmc_set_bus_mode(struct mmc_host *host, unsigned int mode);
44void mmc_set_bus_width(struct mmc_host *host, unsigned int width);
45u32 mmc_select_voltage(struct mmc_host *host, u32 ocr);
46int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage, u32 ocr);
47int __mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage);
48void mmc_set_timing(struct mmc_host *host, unsigned int timing);
49void mmc_set_driver_type(struct mmc_host *host, unsigned int drv_type);
50int mmc_select_drive_strength(struct mmc_card *card, unsigned int max_dtr,
51 int card_drv_type, int *drv_type);
52void mmc_power_up(struct mmc_host *host, u32 ocr);
53void mmc_power_off(struct mmc_host *host);
54void mmc_power_cycle(struct mmc_host *host, u32 ocr);
55void mmc_set_initial_state(struct mmc_host *host);
56
57static inline void mmc_delay(unsigned int ms)
58{
59 if (ms < 1000 / HZ) {
60 cond_resched();
61 mdelay(ms);
62 } else {
63 msleep(ms);
64 }
65}
66
67void mmc_rescan(struct work_struct *work);
68void mmc_start_host(struct mmc_host *host);
69void mmc_stop_host(struct mmc_host *host);
70
71int _mmc_detect_card_removed(struct mmc_host *host);
72
73int mmc_attach_mmc(struct mmc_host *host);
74int mmc_attach_sd(struct mmc_host *host);
75int mmc_attach_sdio(struct mmc_host *host);
76
77/* Module parameters */
78extern bool use_spi_crc;
79
80/* Debugfs information for hosts and cards */
81void mmc_add_host_debugfs(struct mmc_host *host);
82void mmc_remove_host_debugfs(struct mmc_host *host);
83
84void mmc_add_card_debugfs(struct mmc_card *card);
85void mmc_remove_card_debugfs(struct mmc_card *card);
86
87void mmc_init_context_info(struct mmc_host *host);
88
89int mmc_execute_tuning(struct mmc_card *card);
90int mmc_hs200_to_hs400(struct mmc_card *card);
91int mmc_hs400_to_hs200(struct mmc_card *card);
92
93#ifdef CONFIG_PM_SLEEP
94void mmc_register_pm_notifier(struct mmc_host *host);
95void mmc_unregister_pm_notifier(struct mmc_host *host);
96#else
97static inline void mmc_register_pm_notifier(struct mmc_host *host) { }
98static inline void mmc_unregister_pm_notifier(struct mmc_host *host) { }
99#endif
100
101#endif
102
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 <= 20)
66 usleep_range(ms * 1000, ms * 1250);
67 else
68 msleep(ms);
69}
70
71void mmc_rescan(struct work_struct *work);
72void mmc_start_host(struct mmc_host *host);
73void mmc_stop_host(struct mmc_host *host);
74
75int _mmc_detect_card_removed(struct mmc_host *host);
76int mmc_detect_card_removed(struct mmc_host *host);
77
78int mmc_attach_mmc(struct mmc_host *host);
79int mmc_attach_sd(struct mmc_host *host);
80int mmc_attach_sdio(struct mmc_host *host);
81
82/* Module parameters */
83extern bool use_spi_crc;
84
85/* Debugfs information for hosts and cards */
86void mmc_add_host_debugfs(struct mmc_host *host);
87void mmc_remove_host_debugfs(struct mmc_host *host);
88
89void mmc_add_card_debugfs(struct mmc_card *card);
90void mmc_remove_card_debugfs(struct mmc_card *card);
91
92int mmc_execute_tuning(struct mmc_card *card);
93int mmc_hs200_to_hs400(struct mmc_card *card);
94int mmc_hs400_to_hs200(struct mmc_card *card);
95
96#ifdef CONFIG_PM_SLEEP
97void mmc_register_pm_notifier(struct mmc_host *host);
98void mmc_unregister_pm_notifier(struct mmc_host *host);
99#else
100static inline void mmc_register_pm_notifier(struct mmc_host *host) { }
101static inline void mmc_unregister_pm_notifier(struct mmc_host *host) { }
102#endif
103
104void mmc_wait_for_req_done(struct mmc_host *host, struct mmc_request *mrq);
105bool mmc_is_req_done(struct mmc_host *host, struct mmc_request *mrq);
106
107int mmc_start_request(struct mmc_host *host, struct mmc_request *mrq);
108
109int mmc_erase(struct mmc_card *card, unsigned int from, unsigned int nr,
110 unsigned int arg);
111int mmc_can_erase(struct mmc_card *card);
112int mmc_can_trim(struct mmc_card *card);
113int mmc_can_discard(struct mmc_card *card);
114int mmc_can_sanitize(struct mmc_card *card);
115int mmc_can_secure_erase_trim(struct mmc_card *card);
116int mmc_erase_group_aligned(struct mmc_card *card, unsigned int from,
117 unsigned int nr);
118unsigned int mmc_calc_max_discard(struct mmc_card *card);
119
120int mmc_set_blocklen(struct mmc_card *card, unsigned int blocklen);
121int mmc_set_blockcount(struct mmc_card *card, unsigned int blockcount,
122 bool is_rel_write);
123
124int __mmc_claim_host(struct mmc_host *host, struct mmc_ctx *ctx,
125 atomic_t *abort);
126void mmc_release_host(struct mmc_host *host);
127void mmc_get_card(struct mmc_card *card, struct mmc_ctx *ctx);
128void mmc_put_card(struct mmc_card *card, struct mmc_ctx *ctx);
129
130/**
131 * mmc_claim_host - exclusively claim a host
132 * @host: mmc host to claim
133 *
134 * Claim a host for a set of operations.
135 */
136static inline void mmc_claim_host(struct mmc_host *host)
137{
138 __mmc_claim_host(host, NULL, NULL);
139}
140
141int mmc_cqe_start_req(struct mmc_host *host, struct mmc_request *mrq);
142void mmc_cqe_post_req(struct mmc_host *host, struct mmc_request *mrq);
143int mmc_cqe_recovery(struct mmc_host *host);
144
145/**
146 * mmc_pre_req - Prepare for a new request
147 * @host: MMC host to prepare command
148 * @mrq: MMC request to prepare for
149 *
150 * mmc_pre_req() is called in prior to mmc_start_req() to let
151 * host prepare for the new request. Preparation of a request may be
152 * performed while another request is running on the host.
153 */
154static inline void mmc_pre_req(struct mmc_host *host, struct mmc_request *mrq)
155{
156 if (host->ops->pre_req)
157 host->ops->pre_req(host, mrq);
158}
159
160/**
161 * mmc_post_req - Post process a completed request
162 * @host: MMC host to post process command
163 * @mrq: MMC request to post process for
164 * @err: Error, if non zero, clean up any resources made in pre_req
165 *
166 * Let the host post process a completed request. Post processing of
167 * a request may be performed while another request is running.
168 */
169static inline void mmc_post_req(struct mmc_host *host, struct mmc_request *mrq,
170 int err)
171{
172 if (host->ops->post_req)
173 host->ops->post_req(host, mrq, err);
174}
175
176#endif