GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

2026-09-06 03:52:57 +08:00
commit b1928b41c0
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+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2015, Google, Inc
+ * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <malloc.h>
+#include <mapmem.h>
+#include <sdhci.h>
+#include <asm/pci.h>
+
+struct pci_mmc_plat {
+	struct mmc_config cfg;
+	struct mmc mmc;
+};
+
+struct pci_mmc_priv {
+	struct sdhci_host host;
+	void *base;
+};
+
+static int pci_mmc_probe(struct udevice *dev)
+{
+	struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
+	struct pci_mmc_plat *plat = dev_get_platdata(dev);
+	struct pci_mmc_priv *priv = dev_get_priv(dev);
+	struct sdhci_host *host = &priv->host;
+	int ret;
+
+	host->ioaddr = (void *)dm_pci_map_bar(dev, PCI_BASE_ADDRESS_0,
+					      PCI_REGION_MEM);
+	host->name = dev->name;
+	host->mmc = &plat->mmc;
+	host->mmc->dev = dev;
+	ret = sdhci_setup_cfg(&plat->cfg, host, 0, 0);
+	if (ret)
+		return ret;
+	host->mmc->priv = &priv->host;
+	upriv->mmc = host->mmc;
+
+	return sdhci_probe(dev);
+}
+
+static int pci_mmc_bind(struct udevice *dev)
+{
+	struct pci_mmc_plat *plat = dev_get_platdata(dev);
+
+	return sdhci_bind(dev, &plat->mmc, &plat->cfg);
+}
+
+U_BOOT_DRIVER(pci_mmc) = {
+	.name	= "pci_mmc",
+	.id	= UCLASS_MMC,
+	.bind	= pci_mmc_bind,
+	.probe	= pci_mmc_probe,
+	.ops	= &sdhci_ops,
+	.priv_auto_alloc_size = sizeof(struct pci_mmc_priv),
+	.platdata_auto_alloc_size = sizeof(struct pci_mmc_plat),
+};
+
+static struct pci_device_id mmc_supported[] = {
+	{ PCI_DEVICE_CLASS(PCI_CLASS_SYSTEM_SDHCI << 8, 0xffff00) },
+	{},
+};
+
+U_BOOT_PCI_DEVICE(pci_mmc, mmc_supported);