xref: /openbmc/u-boot/drivers/mmc/pci_mmc.c (revision 3aa4b703b483f165dd2eb5c3324b44b60fbb1672)
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);
72