drivers/mmc/tangier_sdhci.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (c) 2017 Intel Corporation
   4  */
   5 #include <common.h>
   6 #include <dm.h>
   7 #include <dm/device.h>
   8 #include <linux/io.h>
   9 #include <linux/sizes.h>
  10 #include <malloc.h>
  11 #include <mmc.h>
  12 #include <sdhci.h>
  13
  14 #define SDHCI_TANGIER_FMAX      200000000
  15 #define SDHCI_TANGIER_FMIN      400000
  16
  17 struct sdhci_tangier_plat {
  18         struct mmc_config cfg;
  19         struct mmc mmc;
  20         void __iomem *ioaddr;
  21 };
  22
  23 static int sdhci_tangier_bind(struct udevice *dev)
  24 {
  25         struct sdhci_tangier_plat *plat = dev_get_platdata(dev);
  26
  27         return sdhci_bind(dev, &plat->mmc, &plat->cfg);
  28 }
  29
  30 static int sdhci_tangier_probe(struct udevice *dev)
  31 {
  32         struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
  33         struct sdhci_tangier_plat *plat = dev_get_platdata(dev);
  34         struct sdhci_host *host = dev_get_priv(dev);
  35         fdt_addr_t base;
  36         int ret;
  37
  38         base = devfdt_get_addr(dev);
  39         if (base == FDT_ADDR_T_NONE)
  40                 return -EINVAL;
  41
  42         plat->ioaddr = devm_ioremap(dev, base, SZ_1K);
  43         if (!plat->ioaddr)
  44                 return -ENOMEM;
  45
  46         host->name = dev->name;
  47         host->ioaddr = plat->ioaddr;
  48         host->quirks = SDHCI_QUIRK_NO_HISPD_BIT | SDHCI_QUIRK_BROKEN_VOLTAGE |
  49                        SDHCI_QUIRK_32BIT_DMA_ADDR | SDHCI_QUIRK_WAIT_SEND_CMD;
  50
  51         /* MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195 */
  52         host->voltages = MMC_VDD_165_195;
  53
  54         ret = sdhci_setup_cfg(&plat->cfg, host, SDHCI_TANGIER_FMAX,
  55                         SDHCI_TANGIER_FMIN);
  56         if (ret)
  57                 return ret;
  58
  59         upriv->mmc = &plat->mmc;
  60         host->mmc = &plat->mmc;
  61         host->mmc->priv = host;
  62
  63         return sdhci_probe(dev);
  64 }
  65
  66 static const struct udevice_id sdhci_tangier_match[] = {
  67         { .compatible = "intel,sdhci-tangier" },
  68         { /* sentinel */ }
  69 };
  70
  71 U_BOOT_DRIVER(sdhci_tangier) = {
  72         .name           = "sdhci-tangier",
  73         .id             = UCLASS_MMC,
  74         .of_match       = sdhci_tangier_match,
  75         .bind           = sdhci_tangier_bind,
  76         .probe          = sdhci_tangier_probe,
  77         .ops            = &sdhci_ops,
  78         .priv_auto_alloc_size = sizeof(struct sdhci_host),
  79         .platdata_auto_alloc_size = sizeof(struct sdhci_tangier_plat),
  80 };