x86: crownbay: Add SDHCI support

There are two standard SD card slots on the Crown Bay board, which
are connected to the Topcliff PCH SDIO controllers. Enable the SDHC
support so that we can use them.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>

2 files changed, 48 insertions, 1 deletions

diff --git a/arch/x86/cpu/queensbay/Makefile b/arch/x86/cpu/queensbay/Makefile
index ace04ca4d0..2c2ec01ed2 100644
--- a/arch/x86/cpu/queensbay/Makefile
+++ b/arch/x86/cpu/queensbay/Makefile
@@ -4,6 +4,6 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-obj-y += tnc_car.o tnc_dram.o tnc.o
+obj-y += tnc_car.o tnc_dram.o tnc.o topcliff.o
 obj-y += fsp_configs.o fsp_support.o
 obj-$(CONFIG_PCI) += tnc_pci.o
diff --git a/arch/x86/cpu/queensbay/topcliff.c b/arch/x86/cpu/queensbay/topcliff.c
new file mode 100644
index 0000000000..b01422a965
--- /dev/null
+++ b/arch/x86/cpu/queensbay/topcliff.c
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <errno.h>
+#include <malloc.h>
+#include <pci.h>
+#include <pci_ids.h>
+#include <sdhci.h>
+
+static struct pci_device_id mmc_supported[] = {
+	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_TCF_SDIO_0 },
+	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_TCF_SDIO_1 },
+	{ }
+};
+
+int cpu_mmc_init(bd_t *bis)
+{
+	struct sdhci_host *mmc_host;
+	pci_dev_t devbusfn;
+	u32 iobase;
+	int ret;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(mmc_supported); i++) {
+		devbusfn =  pci_find_devices(mmc_supported, i);
+		if (devbusfn == -1)
+			return -ENODEV;
+
+		mmc_host = (struct sdhci_host *)malloc(sizeof(struct sdhci_host));
+		if (!mmc_host)
+			return -ENOMEM;
+
+		mmc_host->name = "Topcliff SDHCI";
+		pci_read_config_dword(devbusfn, PCI_BASE_ADDRESS_0, &iobase);
+		mmc_host->ioaddr = (void *)iobase;
+		mmc_host->quirks = 0;
+		ret = add_sdhci(mmc_host, 0, 0);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}