122537e1f3
This commit adds MMC driver support for HI3660 SoC reusing hi6220_dw_mmc driver. Since HI3660 operates at different clock rate and uses fifo mode now, let's introduce the platform data and utilize it for different SoCs supported by this driver. Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
118 lines
2.7 KiB
C
118 lines
2.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2015 Linaro
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* peter.griffin <peter.griffin@linaro.org>
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*/
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#include <common.h>
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#include <dm.h>
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#include <dwmmc.h>
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#include <errno.h>
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#include <fdtdec.h>
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#include <malloc.h>
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DECLARE_GLOBAL_DATA_PTR;
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struct hi6220_dwmmc_plat {
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struct mmc_config cfg;
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struct mmc mmc;
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};
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struct hi6220_dwmmc_priv_data {
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struct dwmci_host host;
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};
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struct hisi_mmc_data {
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unsigned int clock;
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bool use_fifo;
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};
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static int hi6220_dwmmc_ofdata_to_platdata(struct udevice *dev)
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{
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struct hi6220_dwmmc_priv_data *priv = dev_get_priv(dev);
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struct dwmci_host *host = &priv->host;
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host->name = dev->name;
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host->ioaddr = (void *)devfdt_get_addr(dev);
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host->buswidth = fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev),
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"bus-width", 4);
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/* use non-removable property for differentiating SD card and eMMC */
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if (dev_read_bool(dev, "non-removable"))
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host->dev_index = 0;
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else
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host->dev_index = 1;
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host->priv = priv;
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return 0;
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}
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static int hi6220_dwmmc_probe(struct udevice *dev)
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{
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struct hi6220_dwmmc_plat *plat = dev_get_platdata(dev);
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struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
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struct hi6220_dwmmc_priv_data *priv = dev_get_priv(dev);
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struct dwmci_host *host = &priv->host;
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struct hisi_mmc_data *mmc_data;
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mmc_data = (struct hisi_mmc_data *)dev_get_driver_data(dev);
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/* Use default bus speed due to absence of clk driver */
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host->bus_hz = mmc_data->clock;
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dwmci_setup_cfg(&plat->cfg, host, host->bus_hz, 400000);
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host->mmc = &plat->mmc;
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host->fifo_mode = mmc_data->use_fifo;
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host->mmc->priv = &priv->host;
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upriv->mmc = host->mmc;
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host->mmc->dev = dev;
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return dwmci_probe(dev);
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}
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static int hi6220_dwmmc_bind(struct udevice *dev)
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{
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struct hi6220_dwmmc_plat *plat = dev_get_platdata(dev);
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int ret;
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ret = dwmci_bind(dev, &plat->mmc, &plat->cfg);
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if (ret)
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return ret;
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return 0;
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}
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static const struct hisi_mmc_data hi3660_mmc_data = {
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.clock = 3200000,
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.use_fifo = true,
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};
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static const struct hisi_mmc_data hi6220_mmc_data = {
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.clock = 50000000,
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.use_fifo = false,
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};
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static const struct udevice_id hi6220_dwmmc_ids[] = {
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{ .compatible = "hisilicon,hi6220-dw-mshc",
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.data = (ulong)&hi6220_mmc_data },
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{ .compatible = "hisilicon,hi3798cv200-dw-mshc",
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.data = (ulong)&hi6220_mmc_data },
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{ .compatible = "hisilicon,hi3660-dw-mshc",
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.data = (ulong)&hi3660_mmc_data },
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{ }
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};
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U_BOOT_DRIVER(hi6220_dwmmc_drv) = {
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.name = "hi6220_dwmmc",
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.id = UCLASS_MMC,
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.of_match = hi6220_dwmmc_ids,
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.ofdata_to_platdata = hi6220_dwmmc_ofdata_to_platdata,
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.ops = &dm_dwmci_ops,
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.bind = hi6220_dwmmc_bind,
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.probe = hi6220_dwmmc_probe,
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.priv_auto_alloc_size = sizeof(struct hi6220_dwmmc_priv_data),
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.platdata_auto_alloc_size = sizeof(struct hi6220_dwmmc_plat),
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};
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