drivers/mmc/pci_mmc.c

   1 /*
   2  * Copyright (C) 2015, Google, Inc
   3  * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <dm.h>
  10 #include <errno.h>
  11 #include <malloc.h>
  12 #include <mapmem.h>
  13 #include <sdhci.h>
  14 #include <asm/pci.h>
  15
  16 struct pci_mmc_plat {
  17         struct mmc_config cfg;
  18         struct mmc mmc;
  19 };
  20
  21 struct pci_mmc_priv {
  22         struct sdhci_host host;
  23         void *base;
  24 };
  25
  26 static int pci_mmc_probe(struct udevice *dev)
  27 {
  28         struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
  29         struct pci_mmc_plat *plat = dev_get_platdata(dev);
  30         struct pci_mmc_priv *priv = dev_get_priv(dev);
  31         struct sdhci_host *host = &priv->host;
  32         u32 ioaddr;
  33         int ret;
  34
  35         dm_pci_read_config32(dev, PCI_BASE_ADDRESS_0, &ioaddr);
  36         host->ioaddr = map_sysmem(ioaddr, 0);
  37         host->name = dev->name;
  38         ret = sdhci_setup_cfg(&plat->cfg, host, 0, 0);
  39         if (ret)
  40                 return ret;
  41         host->mmc = &plat->mmc;
  42         host->mmc->priv = &priv->host;
  43         host->mmc->dev = dev;
  44         upriv->mmc = host->mmc;
  45
  46         return sdhci_probe(dev);
  47 }
  48
  49 static int pci_mmc_bind(struct udevice *dev)
  50 {
  51         struct pci_mmc_plat *plat = dev_get_platdata(dev);
  52
  53         return sdhci_bind(dev, &plat->mmc, &plat->cfg);
  54 }
  55
  56 U_BOOT_DRIVER(pci_mmc) = {
  57         .name   = "pci_mmc",
  58         .id     = UCLASS_MMC,
  59         .bind   = pci_mmc_bind,
  60         .probe  = pci_mmc_probe,
  61         .ops    = &sdhci_ops,
  62         .priv_auto_alloc_size = sizeof(struct pci_mmc_priv),
  63         .platdata_auto_alloc_size = sizeof(struct pci_mmc_plat),
  64 };
  65
  66 static struct pci_device_id mmc_supported[] = {
  67         { PCI_DEVICE_CLASS(PCI_CLASS_SYSTEM_SDHCI << 8, 0xffff00) },
  68         {},
  69 };
  70
  71 U_BOOT_PCI_DEVICE(pci_mmc, mmc_supported);