Eric Lee / smarc-uboot

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drivers/mmc/pci_mmc.c 1.53 KB
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d41ce506b   Eric Lee   Initial Release, ... 
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  /*
   * Copyright (C) 2015, Google, Inc
   * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
   *
   * SPDX-License-Identifier:	GPL-2.0+
   */
  
  #include <common.h>
  #include <dm.h>
  #include <errno.h>
  #include <malloc.h>
  #include <mapmem.h>
  #include <sdhci.h>
  #include <asm/pci.h>
  
  struct pci_mmc_plat {
  	struct mmc_config cfg;
  	struct mmc mmc;
  };
  
  struct pci_mmc_priv {
  	struct sdhci_host host;
  	void *base;
  };
  
  static int pci_mmc_probe(struct udevice *dev)
  {
  	struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
  	struct pci_mmc_plat *plat = dev_get_platdata(dev);
  	struct pci_mmc_priv *priv = dev_get_priv(dev);
  	struct sdhci_host *host = &priv->host;
  	u32 ioaddr;
  	int ret;
  
  	dm_pci_read_config32(dev, PCI_BASE_ADDRESS_0, &ioaddr);
  	host->ioaddr = map_sysmem(ioaddr, 0);
  	host->name = dev->name;
  	ret = sdhci_setup_cfg(&plat->cfg, host, 0, 0);
  	if (ret)
  		return ret;
  	host->mmc = &plat->mmc;
  	host->mmc->priv = &priv->host;
  	host->mmc->dev = dev;
  	upriv->mmc = host->mmc;
  
  	return sdhci_probe(dev);
  }
  
  static int pci_mmc_bind(struct udevice *dev)
  {
  	struct pci_mmc_plat *plat = dev_get_platdata(dev);
  
  	return sdhci_bind(dev, &plat->mmc, &plat->cfg);
  }
  
  U_BOOT_DRIVER(pci_mmc) = {
  	.name	= "pci_mmc",
  	.id	= UCLASS_MMC,
  	.bind	= pci_mmc_bind,
  	.probe	= pci_mmc_probe,
  	.ops	= &sdhci_ops,
  	.priv_auto_alloc_size = sizeof(struct pci_mmc_priv),
  	.platdata_auto_alloc_size = sizeof(struct pci_mmc_plat),
  };
  
  static struct pci_device_id mmc_supported[] = {
  	{ PCI_DEVICE_CLASS(PCI_CLASS_SYSTEM_SDHCI << 8, 0xffff00) },
  	{},
  };
  
  U_BOOT_PCI_DEVICE(pci_mmc, mmc_supported);