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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 = dev_read_addr_ptr(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 */
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