Eric Lee / smarc-uboot

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drivers/mmc/tangier_sdhci.c 1.89 KB
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d41ce506b   Eric Lee   Initial Release, ... 
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  /*
   * Copyright (c) 2017 Intel Corporation
   *
   * SPDX-License-Identifier:	GPL-2.0+
   */
  #include <common.h>
  #include <dm.h>
  #include <dm/device.h>
  #include <linux/io.h>
  #include <linux/sizes.h>
  #include <malloc.h>
  #include <mmc.h>
  #include <sdhci.h>
  
  #define SDHCI_TANGIER_FMAX	200000000
  #define SDHCI_TANGIER_FMIN	400000
  
  struct sdhci_tangier_plat {
  	struct mmc_config cfg;
  	struct mmc mmc;
  	void __iomem *ioaddr;
  };
  
  static int sdhci_tangier_bind(struct udevice *dev)
  {
  	struct sdhci_tangier_plat *plat = dev_get_platdata(dev);
  
  	return sdhci_bind(dev, &plat->mmc, &plat->cfg);
  }
  
  static int sdhci_tangier_probe(struct udevice *dev)
  {
  	struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
  	struct sdhci_tangier_plat *plat = dev_get_platdata(dev);
  	struct sdhci_host *host = dev_get_priv(dev);
  	fdt_addr_t base;
  	int ret;
  
  	base = devfdt_get_addr(dev);
  	if (base == FDT_ADDR_T_NONE)
  		return -EINVAL;
  
  	plat->ioaddr = devm_ioremap(dev, base, SZ_1K);
  	if (!plat->ioaddr)
  		return -ENOMEM;
  
  	host->name = dev->name;
  	host->ioaddr = plat->ioaddr;
  	host->quirks = SDHCI_QUIRK_NO_HISPD_BIT | SDHCI_QUIRK_BROKEN_VOLTAGE |
  		       SDHCI_QUIRK_32BIT_DMA_ADDR | SDHCI_QUIRK_WAIT_SEND_CMD;
  
  	/* MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195 */
  	host->voltages = MMC_VDD_165_195;
  
  	ret = sdhci_setup_cfg(&plat->cfg, host, SDHCI_TANGIER_FMAX,
  			SDHCI_TANGIER_FMIN);
  	if (ret)
  		return ret;
  
  	upriv->mmc = &plat->mmc;
  	host->mmc = &plat->mmc;
  	host->mmc->priv = host;
  
  	return sdhci_probe(dev);
  }
  
  static const struct udevice_id sdhci_tangier_match[] = {
  	{ .compatible = "intel,sdhci-tangier" },
  	{ /* sentinel */ }
  };
  
  U_BOOT_DRIVER(sdhci_tangier) = {
  	.name		= "sdhci-tangier",
  	.id		= UCLASS_MMC,
  	.of_match	= sdhci_tangier_match,
  	.bind		= sdhci_tangier_bind,
  	.probe		= sdhci_tangier_probe,
  	.ops		= &sdhci_ops,
  	.priv_auto_alloc_size = sizeof(struct sdhci_host),
  	.platdata_auto_alloc_size = sizeof(struct sdhci_tangier_plat),
  };