drivers/mmc/zynq_sdhci.c

   1 /*
   2  * (C) Copyright 2013 - 2015 Xilinx, Inc.
   3  *
   4  * Xilinx Zynq SD Host Controller Interface
   5  *
   6  * SPDX-License-Identifier:     GPL-2.0+
   7  */
   8
   9 #include <common.h>
  10 #include <dm.h>
  11 #include <fdtdec.h>
  12 #include <libfdt.h>
  13 #include <malloc.h>
  14 #include <sdhci.h>
  15
  16 static int arasan_sdhci_probe(struct udevice *dev)
  17 {
  18         struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
  19         struct sdhci_host *host = dev_get_priv(dev);
  20
  21         host->quirks = SDHCI_QUIRK_WAIT_SEND_CMD |
  22                        SDHCI_QUIRK_BROKEN_R1B;
  23         host->version = sdhci_readw(host, SDHCI_HOST_VERSION);
  24
  25         add_sdhci(host, CONFIG_ZYNQ_SDHCI_MAX_FREQ, 0);
  26
  27         upriv->mmc = host->mmc;
  28
  29         return 0;
  30 }
  31
  32 static int arasan_sdhci_ofdata_to_platdata(struct udevice *dev)
  33 {
  34         struct sdhci_host *host = dev_get_priv(dev);
  35
  36         host->name = (char *)dev->name;
  37         host->ioaddr = (void *)dev_get_addr(dev);
  38
  39         return 0;
  40 }
  41
  42 static const struct udevice_id arasan_sdhci_ids[] = {
  43         { .compatible = "arasan,sdhci-8.9a" },
  44         { }
  45 };
  46
  47 U_BOOT_DRIVER(arasan_sdhci_drv) = {
  48         .name           = "arasan_sdhci",
  49         .id             = UCLASS_MMC,
  50         .of_match       = arasan_sdhci_ids,
  51         .ofdata_to_platdata = arasan_sdhci_ofdata_to_platdata,
  52         .probe          = arasan_sdhci_probe,
  53         .priv_auto_alloc_size = sizeof(struct sdhci_host),
  54 };