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https://github.com/brain-hackers/u-boot-brain
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41575d8e4c
This construct is quite long-winded. In earlier days it made some sense since auto-allocation was a strange concept. But with driver model now used pretty universally, we can shorten this to 'auto'. This reduces verbosity and makes it easier to read. Coincidentally it also ensures that every declaration is on one line, thus making dtoc's job easier. Signed-off-by: Simon Glass <sjg@chromium.org>
137 lines
2.8 KiB
C
137 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2015 Atmel Corporation
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* Wenyou.Yang <wenyou.yang@atmel.com>
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*/
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#include <common.h>
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#include <clk.h>
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#include <dm.h>
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#include <malloc.h>
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#include <sdhci.h>
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#include <asm/arch/clk.h>
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#define ATMEL_SDHC_MIN_FREQ 400000
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#define ATMEL_SDHC_GCK_RATE 240000000
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#ifndef CONFIG_DM_MMC
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int atmel_sdhci_init(void *regbase, u32 id)
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{
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struct sdhci_host *host;
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u32 max_clk, min_clk = ATMEL_SDHC_MIN_FREQ;
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host = (struct sdhci_host *)calloc(1, sizeof(struct sdhci_host));
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if (!host) {
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printf("%s: sdhci_host calloc failed\n", __func__);
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return -ENOMEM;
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}
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host->name = "atmel_sdhci";
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host->ioaddr = regbase;
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host->quirks = SDHCI_QUIRK_WAIT_SEND_CMD;
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max_clk = at91_get_periph_generated_clk(id);
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if (!max_clk) {
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printf("%s: Failed to get the proper clock\n", __func__);
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free(host);
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return -ENODEV;
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}
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host->max_clk = max_clk;
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add_sdhci(host, 0, min_clk);
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return 0;
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}
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#else
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DECLARE_GLOBAL_DATA_PTR;
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struct atmel_sdhci_plat {
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struct mmc_config cfg;
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struct mmc mmc;
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};
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static int atmel_sdhci_probe(struct udevice *dev)
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{
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struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
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struct atmel_sdhci_plat *plat = dev_get_platdata(dev);
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struct sdhci_host *host = dev_get_priv(dev);
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u32 max_clk;
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struct clk clk;
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int ret;
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ret = clk_get_by_index(dev, 0, &clk);
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if (ret)
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return ret;
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ret = clk_enable(&clk);
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if (ret)
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return ret;
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host->name = dev->name;
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host->ioaddr = dev_read_addr_ptr(dev);
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host->quirks = SDHCI_QUIRK_WAIT_SEND_CMD;
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host->bus_width = fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev),
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"bus-width", 4);
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ret = clk_get_by_index(dev, 1, &clk);
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if (ret)
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return ret;
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clk_set_rate(&clk, ATMEL_SDHC_GCK_RATE);
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max_clk = clk_get_rate(&clk);
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if (!max_clk)
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return -EINVAL;
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ret = clk_enable(&clk);
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if (ret)
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return ret;
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ret = mmc_of_parse(dev, &plat->cfg);
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if (ret)
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return ret;
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host->max_clk = max_clk;
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host->mmc = &plat->mmc;
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host->mmc->dev = dev;
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ret = sdhci_setup_cfg(&plat->cfg, host, 0, ATMEL_SDHC_MIN_FREQ);
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if (ret)
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return ret;
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host->mmc->priv = host;
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upriv->mmc = host->mmc;
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clk_free(&clk);
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return sdhci_probe(dev);
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}
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static int atmel_sdhci_bind(struct udevice *dev)
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{
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struct atmel_sdhci_plat *plat = dev_get_platdata(dev);
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return sdhci_bind(dev, &plat->mmc, &plat->cfg);
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}
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static const struct udevice_id atmel_sdhci_ids[] = {
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{ .compatible = "atmel,sama5d2-sdhci" },
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{ .compatible = "microchip,sam9x60-sdhci" },
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{ .compatible = "microchip,sama7g5-sdhci" },
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{ }
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};
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U_BOOT_DRIVER(atmel_sdhci_drv) = {
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.name = "atmel_sdhci",
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.id = UCLASS_MMC,
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.of_match = atmel_sdhci_ids,
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.ops = &sdhci_ops,
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.bind = atmel_sdhci_bind,
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.probe = atmel_sdhci_probe,
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.priv_auto = sizeof(struct sdhci_host),
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.platdata_auto = sizeof(struct atmel_sdhci_plat),
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};
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#endif
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