diff options
Diffstat (limited to 'drivers/mmc/core/core.h')
| -rw-r--r-- | drivers/mmc/core/core.h | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/drivers/mmc/core/core.h b/drivers/mmc/core/core.h new file mode 100644 index 000000000..f5f3f623e --- /dev/null +++ b/drivers/mmc/core/core.h @@ -0,0 +1,187 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * linux/drivers/mmc/core/core.h + * + * Copyright (C) 2003 Russell King, All Rights Reserved. + * Copyright 2007 Pierre Ossman + */ +#ifndef _MMC_CORE_CORE_H +#define _MMC_CORE_CORE_H + +#include <linux/delay.h> +#include <linux/sched.h> + +struct mmc_host; +struct mmc_card; +struct mmc_request; + +#define MMC_CMD_RETRIES 3 + +struct mmc_bus_ops { + void (*remove)(struct mmc_host *); + void (*detect)(struct mmc_host *); + int (*pre_suspend)(struct mmc_host *); + int (*suspend)(struct mmc_host *); + int (*resume)(struct mmc_host *); + int (*runtime_suspend)(struct mmc_host *); + int (*runtime_resume)(struct mmc_host *); + int (*alive)(struct mmc_host *); + int (*shutdown)(struct mmc_host *); + int (*hw_reset)(struct mmc_host *); + int (*sw_reset)(struct mmc_host *); + bool (*cache_enabled)(struct mmc_host *); + int (*flush_cache)(struct mmc_host *); +}; + +void mmc_attach_bus(struct mmc_host *host, const struct mmc_bus_ops *ops); +void mmc_detach_bus(struct mmc_host *host); + +struct device_node *mmc_of_find_child_device(struct mmc_host *host, + unsigned func_num); + +void mmc_init_erase(struct mmc_card *card); + +void mmc_set_chip_select(struct mmc_host *host, int mode); +void mmc_set_clock(struct mmc_host *host, unsigned int hz); +void mmc_set_bus_mode(struct mmc_host *host, unsigned int mode); +void mmc_set_bus_width(struct mmc_host *host, unsigned int width); +u32 mmc_select_voltage(struct mmc_host *host, u32 ocr); +int mmc_set_uhs_voltage(struct mmc_host *host, u32 ocr); +int mmc_host_set_uhs_voltage(struct mmc_host *host); +int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage); +void mmc_set_initial_signal_voltage(struct mmc_host *host); +void mmc_set_timing(struct mmc_host *host, unsigned int timing); +void mmc_set_driver_type(struct mmc_host *host, unsigned int drv_type); +int mmc_select_drive_strength(struct mmc_card *card, unsigned int max_dtr, + int card_drv_type, int *drv_type); +void mmc_power_up(struct mmc_host *host, u32 ocr); +void mmc_power_off(struct mmc_host *host); +void mmc_power_cycle(struct mmc_host *host, u32 ocr); +void mmc_set_initial_state(struct mmc_host *host); +u32 mmc_vddrange_to_ocrmask(int vdd_min, int vdd_max); + +static inline void mmc_delay(unsigned int ms) +{ + if (ms <= 20) + usleep_range(ms * 1000, ms * 1250); + else + msleep(ms); +} + +void mmc_rescan(struct work_struct *work); +void mmc_start_host(struct mmc_host *host); +void __mmc_stop_host(struct mmc_host *host); +void mmc_stop_host(struct mmc_host *host); + +void _mmc_detect_change(struct mmc_host *host, unsigned long delay, + bool cd_irq); +int _mmc_detect_card_removed(struct mmc_host *host); +int mmc_detect_card_removed(struct mmc_host *host); + +int mmc_attach_mmc(struct mmc_host *host); +int mmc_attach_sd(struct mmc_host *host); +int mmc_attach_sdio(struct mmc_host *host); + +/* Module parameters */ +extern bool use_spi_crc; + +/* Debugfs information for hosts and cards */ +void mmc_add_host_debugfs(struct mmc_host *host); +void mmc_remove_host_debugfs(struct mmc_host *host); + +void mmc_add_card_debugfs(struct mmc_card *card); +void mmc_remove_card_debugfs(struct mmc_card *card); + +int mmc_execute_tuning(struct mmc_card *card); +int mmc_hs200_to_hs400(struct mmc_card *card); +int mmc_hs400_to_hs200(struct mmc_card *card); + +void mmc_wait_for_req_done(struct mmc_host *host, struct mmc_request *mrq); +bool mmc_is_req_done(struct mmc_host *host, struct mmc_request *mrq); + +int mmc_start_request(struct mmc_host *host, struct mmc_request *mrq); + +int mmc_erase(struct mmc_card *card, unsigned int from, unsigned int nr, + unsigned int arg); +int mmc_can_erase(struct mmc_card *card); +int mmc_can_trim(struct mmc_card *card); +int mmc_can_discard(struct mmc_card *card); +int mmc_can_sanitize(struct mmc_card *card); +int mmc_can_secure_erase_trim(struct mmc_card *card); +int mmc_erase_group_aligned(struct mmc_card *card, unsigned int from, + unsigned int nr); +unsigned int mmc_calc_max_discard(struct mmc_card *card); + +int mmc_set_blocklen(struct mmc_card *card, unsigned int blocklen); + +int __mmc_claim_host(struct mmc_host *host, struct mmc_ctx *ctx, + atomic_t *abort); +void mmc_release_host(struct mmc_host *host); +void mmc_get_card(struct mmc_card *card, struct mmc_ctx *ctx); +void mmc_put_card(struct mmc_card *card, struct mmc_ctx *ctx); + +int mmc_card_alternative_gpt_sector(struct mmc_card *card, sector_t *sector); + +/** + * mmc_claim_host - exclusively claim a host + * @host: mmc host to claim + * + * Claim a host for a set of operations. + */ +static inline void mmc_claim_host(struct mmc_host *host) +{ + __mmc_claim_host(host, NULL, NULL); +} + +int mmc_cqe_start_req(struct mmc_host *host, struct mmc_request *mrq); +void mmc_cqe_post_req(struct mmc_host *host, struct mmc_request *mrq); +int mmc_cqe_recovery(struct mmc_host *host); + +/** + * mmc_pre_req - Prepare for a new request + * @host: MMC host to prepare command + * @mrq: MMC request to prepare for + * + * mmc_pre_req() is called in prior to mmc_start_req() to let + * host prepare for the new request. Preparation of a request may be + * performed while another request is running on the host. + */ +static inline void mmc_pre_req(struct mmc_host *host, struct mmc_request *mrq) +{ + if (host->ops->pre_req) + host->ops->pre_req(host, mrq); +} + +/** + * mmc_post_req - Post process a completed request + * @host: MMC host to post process command + * @mrq: MMC request to post process for + * @err: Error, if non zero, clean up any resources made in pre_req + * + * Let the host post process a completed request. Post processing of + * a request may be performed while another request is running. + */ +static inline void mmc_post_req(struct mmc_host *host, struct mmc_request *mrq, + int err) +{ + if (host->ops->post_req) + host->ops->post_req(host, mrq, err); +} + +static inline bool mmc_cache_enabled(struct mmc_host *host) +{ + if (host->bus_ops->cache_enabled) + return host->bus_ops->cache_enabled(host); + + return false; +} + +static inline int mmc_flush_cache(struct mmc_host *host) +{ + if (host->bus_ops->flush_cache) + return host->bus_ops->flush_cache(host); + + return 0; +} + +#endif |