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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>
94 lines
2.0 KiB
C
94 lines
2.0 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Support of SDHCI for Microchip PIC32 SoC.
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*
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* Copyright (C) 2015 Microchip Technology Inc.
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* Andrei Pistirica <andrei.pistirica@microchip.com>
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*/
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#include <dm.h>
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#include <sdhci.h>
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#include <clk.h>
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struct pic32_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 pic32_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 pic32_sdhci_plat *plat = dev_get_platdata(dev);
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struct sdhci_host *host = dev_get_priv(dev);
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struct clk clk;
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ulong clk_rate;
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int ret;
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ret = clk_get_by_name(dev, "base_clk", &clk);
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if (ret)
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return ret;
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clk_rate = clk_get_rate(&clk);
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clk_free(&clk);
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if (IS_ERR_VALUE(clk_rate))
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return clk_rate;
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host->ioaddr = dev_remap_addr(dev);
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if (!host->ioaddr)
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return -EINVAL;
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host->name = dev->name;
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host->quirks = SDHCI_QUIRK_NO_HISPD_BIT;
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host->bus_width = dev_read_u32_default(dev, "bus-width", 4);
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host->max_clk = clk_rate;
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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, 0);
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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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ret = sdhci_probe(dev);
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if (ret)
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return ret;
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if (!dev_read_bool(dev, "microchip,use-sdcd")) {
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// Use workaround 1 for erratum #15 by default
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u8 ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
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ctrl = (ctrl & ~SDHCI_CTRL_CD_TEST_INS) | SDHCI_CTRL_CD_TEST;
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sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
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}
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return 0;
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}
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static int pic32_sdhci_bind(struct udevice *dev)
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{
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struct pic32_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 pic32_sdhci_ids[] = {
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{ .compatible = "microchip,pic32mzda-sdhci" },
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{ }
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};
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U_BOOT_DRIVER(pic32_sdhci_drv) = {
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.name = "pic32_sdhci",
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.id = UCLASS_MMC,
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.of_match = pic32_sdhci_ids,
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.ops = &sdhci_ops,
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.bind = pic32_sdhci_bind,
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.probe = pic32_sdhci_probe,
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.priv_auto = sizeof(struct sdhci_host),
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.platdata_auto = sizeof(struct pic32_sdhci_plat)
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};
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