mv_sdhci.c
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// SPDX-License-Identifier: GPL-2.0+
/*
* Marvell SD Host Controller Interface
*/
#include <common.h>
#include <dm.h>
#include <malloc.h>
#include <sdhci.h>
#include <linux/mbus.h>
#define MVSDH_NAME "mv_sdh"
#define SDHCI_WINDOW_CTRL(win) (0x4080 + ((win) << 4))
#define SDHCI_WINDOW_BASE(win) (0x4084 + ((win) << 4))
static void sdhci_mvebu_mbus_config(void __iomem *base)
{
const struct mbus_dram_target_info *dram;
int i;
dram = mvebu_mbus_dram_info();
for (i = 0; i < 4; i++) {
writel(0, base + SDHCI_WINDOW_CTRL(i));
writel(0, base + SDHCI_WINDOW_BASE(i));
}
for (i = 0; i < dram->num_cs; i++) {
const struct mbus_dram_window *cs = dram->cs + i;
/* Write size, attributes and target id to control register */
writel(((cs->size - 1) & 0xffff0000) | (cs->mbus_attr << 8) |
(dram->mbus_dram_target_id << 4) | 1,
base + SDHCI_WINDOW_CTRL(i));
/* Write base address to base register */
writel(cs->base, base + SDHCI_WINDOW_BASE(i));
}
}
#ifndef CONFIG_DM_MMC
#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
static struct sdhci_ops mv_ops;
#if defined(CONFIG_SHEEVA_88SV331xV5)
#define SD_CE_ATA_2 0xEA
#define MMC_CARD 0x1000
#define MMC_WIDTH 0x0100
static inline void mv_sdhci_writeb(struct sdhci_host *host, u8 val, int reg)
{
struct mmc *mmc = host->mmc;
u32 ata = (unsigned long)host->ioaddr + SD_CE_ATA_2;
if (!IS_SD(mmc) && reg == SDHCI_HOST_CONTROL) {
if (mmc->bus_width == 8)
writew(readw(ata) | (MMC_CARD | MMC_WIDTH), ata);
else
writew(readw(ata) & ~(MMC_CARD | MMC_WIDTH), ata);
}
writeb(val, host->ioaddr + reg);
}
#else
#define mv_sdhci_writeb NULL
#endif /* CONFIG_SHEEVA_88SV331xV5 */
#endif /* CONFIG_MMC_SDHCI_IO_ACCESSORS */
int mv_sdh_init(unsigned long regbase, u32 max_clk, u32 min_clk, u32 quirks)
{
struct sdhci_host *host = NULL;
host = calloc(1, sizeof(*host));
if (!host) {
printf("sdh_host malloc fail!\n");
return -ENOMEM;
}
host->name = MVSDH_NAME;
host->ioaddr = (void *)regbase;
host->quirks = quirks;
host->max_clk = max_clk;
#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
memset(&mv_ops, 0, sizeof(struct sdhci_ops));
mv_ops.write_b = mv_sdhci_writeb;
host->ops = &mv_ops;
#endif
if (CONFIG_IS_ENABLED(ARCH_MVEBU)) {
/* Configure SDHCI MBUS mbus bridge windows */
sdhci_mvebu_mbus_config((void __iomem *)regbase);
}
return add_sdhci(host, 0, min_clk);
}
#else
DECLARE_GLOBAL_DATA_PTR;
struct mv_sdhci_plat {
struct mmc_config cfg;
struct mmc mmc;
};
static int mv_sdhci_probe(struct udevice *dev)
{
struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
struct mv_sdhci_plat *plat = dev_get_platdata(dev);
struct sdhci_host *host = dev_get_priv(dev);
int ret;
host->name = MVSDH_NAME;
host->ioaddr = (void *)devfdt_get_addr(dev);
host->quirks = SDHCI_QUIRK_32BIT_DMA_ADDR | SDHCI_QUIRK_WAIT_SEND_CMD;
host->mmc = &plat->mmc;
host->mmc->dev = dev;
host->mmc->priv = host;
ret = sdhci_setup_cfg(&plat->cfg, host, 0, 0);
if (ret)
return ret;
if (CONFIG_IS_ENABLED(ARCH_MVEBU)) {
/* Configure SDHCI MBUS mbus bridge windows */
sdhci_mvebu_mbus_config(host->ioaddr);
}
upriv->mmc = host->mmc;
return sdhci_probe(dev);
}
static int mv_sdhci_bind(struct udevice *dev)
{
struct mv_sdhci_plat *plat = dev_get_platdata(dev);
return sdhci_bind(dev, &plat->mmc, &plat->cfg);
}
static const struct udevice_id mv_sdhci_ids[] = {
{ .compatible = "marvell,armada-380-sdhci" },
{ }
};
U_BOOT_DRIVER(mv_sdhci_drv) = {
.name = MVSDH_NAME,
.id = UCLASS_MMC,
.of_match = mv_sdhci_ids,
.bind = mv_sdhci_bind,
.probe = mv_sdhci_probe,
.ops = &sdhci_ops,
.priv_auto_alloc_size = sizeof(struct sdhci_host),
.platdata_auto_alloc_size = sizeof(struct mv_sdhci_plat),
};
#endif /* CONFIG_DM_MMC */