core.h 6.0 KB

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