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 17 struct mmc_host; 18 struct mmc_card; 19 struct mmc_request; 20 21 #define MMC_CMD_RETRIES 3 22 23 struct 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 38 void mmc_attach_bus(struct mmc_host *host, const struct mmc_bus_ops *ops); 39 void mmc_detach_bus(struct mmc_host *host); 40 41 struct device_node *mmc_of_find_child_device(struct mmc_host *host, 42 unsigned func_num); 43 44 void mmc_init_erase(struct mmc_card *card); 45 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_set_signal_voltage(struct mmc_host *host, int signal_voltage); 53 void mmc_set_timing(struct mmc_host *host, unsigned int timing); 54 void mmc_set_driver_type(struct mmc_host *host, unsigned int drv_type); 55 int mmc_select_drive_strength(struct mmc_card *card, unsigned int max_dtr, 56 int card_drv_type, int *drv_type); 57 void mmc_power_up(struct mmc_host *host, u32 ocr); 58 void mmc_power_off(struct mmc_host *host); 59 void mmc_power_cycle(struct mmc_host *host, u32 ocr); 60 void mmc_set_initial_state(struct mmc_host *host); 61 62 static inline void mmc_delay(unsigned int ms) 63 { 64 if (ms < 1000 / HZ) { 65 cond_resched(); 66 mdelay(ms); 67 } else { 68 msleep(ms); 69 } 70 } 71 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); 75 76 int _mmc_detect_card_removed(struct mmc_host *host); 77 int mmc_detect_card_removed(struct mmc_host *host); 78 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); 82 83 /* Module parameters */ 84 extern bool use_spi_crc; 85 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); 89 90 void mmc_add_card_debugfs(struct mmc_card *card); 91 void mmc_remove_card_debugfs(struct mmc_card *card); 92 93 void mmc_init_context_info(struct mmc_host *host); 94 95 int mmc_execute_tuning(struct mmc_card *card); 96 int mmc_hs200_to_hs400(struct mmc_card *card); 97 int mmc_hs400_to_hs200(struct mmc_card *card); 98 99 #ifdef CONFIG_PM_SLEEP 100 void mmc_register_pm_notifier(struct mmc_host *host); 101 void mmc_unregister_pm_notifier(struct mmc_host *host); 102 #else 103 static inline void mmc_register_pm_notifier(struct mmc_host *host) { } 104 static inline void mmc_unregister_pm_notifier(struct mmc_host *host) { } 105 #endif 106 107 void mmc_wait_for_req_done(struct mmc_host *host, struct mmc_request *mrq); 108 bool mmc_is_req_done(struct mmc_host *host, struct mmc_request *mrq); 109 110 int mmc_erase(struct mmc_card *card, unsigned int from, unsigned int nr, 111 unsigned int arg); 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, 118 unsigned int nr); 119 unsigned int mmc_calc_max_discard(struct mmc_card *card); 120 121 int mmc_set_blocklen(struct mmc_card *card, unsigned int blocklen); 122 int mmc_set_blockcount(struct mmc_card *card, unsigned int blockcount, 123 bool is_rel_write); 124 125 int __mmc_claim_host(struct mmc_host *host, atomic_t *abort); 126 void mmc_release_host(struct mmc_host *host); 127 void mmc_get_card(struct mmc_card *card); 128 void mmc_put_card(struct mmc_card *card); 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 */ 136 static inline void mmc_claim_host(struct mmc_host *host) 137 { 138 __mmc_claim_host(host, NULL); 139 } 140 141 #endif 142