tangier_sdhci.c
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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),
};