drivers/mmc/mmc_legacy.c

   1 /*
   2  * Copyright (C) 2016 Google, Inc
   3  * Written by Simon Glass <sjg@chromium.org>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <mmc.h>
  10
  11 static struct list_head mmc_devices;
  12 static int cur_dev_num = -1;
  13
  14 struct mmc *find_mmc_device(int dev_num)
  15 {
  16         struct mmc *m;
  17         struct list_head *entry;
  18
  19         list_for_each(entry, &mmc_devices) {
  20                 m = list_entry(entry, struct mmc, link);
  21
  22                 if (m->block_dev.devnum == dev_num)
  23                         return m;
  24         }
  25
  26 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
  27         printf("MMC Device %d not found\n", dev_num);
  28 #endif
  29
  30         return NULL;
  31 }
  32
  33 int mmc_get_next_devnum(void)
  34 {
  35         return cur_dev_num++;
  36 }
  37
  38 struct blk_desc *mmc_get_blk_desc(struct mmc *mmc)
  39 {
  40         return &mmc->block_dev;
  41 }
  42
  43 int get_mmc_num(void)
  44 {
  45         return cur_dev_num;
  46 }
  47
  48 void mmc_do_preinit(void)
  49 {
  50         struct mmc *m;
  51         struct list_head *entry;
  52
  53         list_for_each(entry, &mmc_devices) {
  54                 m = list_entry(entry, struct mmc, link);
  55
  56 #ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT
  57                 mmc_set_preinit(m, 1);
  58 #endif
  59                 if (m->preinit)
  60                         mmc_start_init(m);
  61         }
  62 }
  63
  64 void mmc_list_init(void)
  65 {
  66         INIT_LIST_HEAD(&mmc_devices);
  67         cur_dev_num = 0;
  68 }
  69
  70 void mmc_list_add(struct mmc *mmc)
  71 {
  72         INIT_LIST_HEAD(&mmc->link);
  73
  74         list_add_tail(&mmc->link, &mmc_devices);
  75 }
  76
  77 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
  78 void print_mmc_devices(char separator)
  79 {
  80         struct mmc *m;
  81         struct list_head *entry;
  82         char *mmc_type;
  83
  84         list_for_each(entry, &mmc_devices) {
  85                 m = list_entry(entry, struct mmc, link);
  86
  87                 if (m->has_init)
  88                         mmc_type = IS_SD(m) ? "SD" : "eMMC";
  89                 else
  90                         mmc_type = NULL;
  91
  92                 printf("%s: %d", m->cfg->name, m->block_dev.devnum);
  93                 if (mmc_type)
  94                         printf(" (%s)", mmc_type);
  95
  96                 if (entry->next != &mmc_devices) {
  97                         printf("%c", separator);
  98                         if (separator != '\n')
  99                                 puts(" ");
 100                 }
 101         }
 102
 103         printf("\n");
 104 }
 105
 106 #else
 107 void print_mmc_devices(char separator) { }
 108 #endif