aspeed_sdhci.c
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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2019 IBM Corp.
* Eddie James <eajames@linux.ibm.com>
*/
#include <common.h>
#include <clk.h>
#include <dm.h>
#include <malloc.h>
#include <sdhci.h>
#include <linux/err.h>
struct aspeed_sdhci_plat {
struct mmc_config cfg;
struct mmc mmc;
};
static int aspeed_sdhci_probe(struct udevice *dev)
{
struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
struct aspeed_sdhci_plat *plat = dev_get_platdata(dev);
struct sdhci_host *host = dev_get_priv(dev);
u32 max_clk;
struct clk clk;
int ret;
ret = clk_get_by_index(dev, 0, &clk);
if (ret)
return ret;
ret = clk_enable(&clk);
if (ret)
goto free;
host->name = dev->name;
host->ioaddr = (void *)devfdt_get_addr(dev);
max_clk = clk_get_rate(&clk);
if (IS_ERR_VALUE(max_clk)) {
ret = max_clk;
goto err;
}
host->max_clk = max_clk;
host->mmc = &plat->mmc;
host->mmc->dev = dev;
host->mmc->priv = host;
upriv->mmc = host->mmc;
ret = sdhci_setup_cfg(&plat->cfg, host, 0, 0);
if (ret)
goto err;
ret = sdhci_probe(dev);
if (ret)
goto err;
return 0;
err:
clk_disable(&clk);
free:
clk_free(&clk);
return ret;
}
static int aspeed_sdhci_bind(struct udevice *dev)
{
struct aspeed_sdhci_plat *plat = dev_get_platdata(dev);
return sdhci_bind(dev, &plat->mmc, &plat->cfg);
}
static const struct udevice_id aspeed_sdhci_ids[] = {
{ .compatible = "aspeed,ast2400-sdhci" },
{ .compatible = "aspeed,ast2500-sdhci" },
{ .compatible = "aspeed,ast2600-sdhci" },
{ }
};
U_BOOT_DRIVER(aspeed_sdhci_drv) = {
.name = "aspeed_sdhci",
.id = UCLASS_MMC,
.of_match = aspeed_sdhci_ids,
.ops = &sdhci_ops,
.bind = aspeed_sdhci_bind,
.probe = aspeed_sdhci_probe,
.priv_auto_alloc_size = sizeof(struct sdhci_host),
.platdata_auto_alloc_size = sizeof(struct aspeed_sdhci_plat),
};