[U-Boot] [PATCH v1] mmc: tangier: Add Intel Tangier eMMC/SDHCI driver

[Andy Shevchenko <andriy.shevchenko@linux.intel.com>]

From: Felipe Balbi <felipe.balbi@linux.intel.com>

This patch adds Intel Tangier eMMC/SDHCI driver.

Signed-off-by: Vincent Tinelli <vincent.tinelli@intel.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/mmc/Kconfig         |  5 ++++
 drivers/mmc/Makefile        |  1 +
 drivers/mmc/tangier_sdhci.c | 73 +++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 79 insertions(+)
 create mode 100644 drivers/mmc/tangier_sdhci.c

diff --git a/drivers/mmc/Kconfig b/drivers/mmc/Kconfig
index 01d1dbfb1b..42a44f9888 100644
--- a/drivers/mmc/Kconfig
+++ b/drivers/mmc/Kconfig
@@ -310,6 +310,11 @@ config MMC_SDHCI_XENON
 
 	  If unsure, say N.
 
+config MMC_SDHCI_TANGIER
+	bool "Tangier SDHCI controller supprt"
+	depends on DM_MMC && BLK && DM_MMC_OPS
+	depends on MMC_SDHCI
+
 config MMC_SDHCI_TEGRA
 	bool "SDHCI platform support for the Tegra SD/MMC Controller"
 	depends on TEGRA
diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile
index ef27d55088..019b587441 100644
--- a/drivers/mmc/Makefile
+++ b/drivers/mmc/Makefile
@@ -63,6 +63,7 @@ obj-$(CONFIG_MMC_SDHCI_PIC32)		+= pic32_sdhci.o
 obj-$(CONFIG_MMC_SDHCI_ROCKCHIP)	+= rockchip_sdhci.o
 obj-$(CONFIG_MMC_SDHCI_S5P)		+= s5p_sdhci.o
 obj-$(CONFIG_MMC_SDHCI_SPEAR)		+= spear_sdhci.o
+obj-$(CONFIG_MMC_SDHCI_TANGIER)		+= tangier_sdhci.o
 obj-$(CONFIG_MMC_SDHCI_TEGRA)		+= tegra_mmc.o
 obj-$(CONFIG_MMC_SDHCI_XENON)		+= xenon_sdhci.o
 obj-$(CONFIG_MMC_SDHCI_ZYNQ)		+= zynq_sdhci.o
diff --git a/drivers/mmc/tangier_sdhci.c b/drivers/mmc/tangier_sdhci.c
new file mode 100644
index 0000000000..6a8a6270a9
--- /dev/null
+++ b/drivers/mmc/tangier_sdhci.c
@@ -0,0 +1,73 @@
+#include <common.h>
+#include <linux/io.h>
+#include <linux/sizes.h>
+#include <mmc.h>
+#include <dm.h>
+#include <dm/device.h>
+#include <malloc.h>
+#include <sdhci.h>
+
+struct sdhci_tangier_plat {
+	struct mmc_config cfg;
+	struct mmc mmc;
+	void __iomem *ioaddr;
+};
+
+static int sdhci_tangier_bind(struct udevice *dev)
+{
+	struct sdhci_tangier_plat *plat = dev_get_platdata(dev);
+
+	return sdhci_bind(dev, &plat->mmc, &plat->cfg);
+}
+
+static int sdhci_tangier_probe(struct udevice *dev)
+{
+	struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
+	struct sdhci_tangier_plat *plat = dev_get_platdata(dev);
+	struct sdhci_host *host = dev_get_priv(dev);
+	fdt_addr_t base;
+	int ret;
+
+	base = dev_get_addr(dev);
+	if (base == FDT_ADDR_T_NONE)
+		return -EINVAL;
+
+	plat->ioaddr = devm_ioremap(dev, base, SZ_1K);
+	if (!plat->ioaddr)
+		return -ENOMEM;
+
+	host->name = dev->name;
+	host->ioaddr = plat->ioaddr;
+	host->quirks = SDHCI_QUIRK_NO_HISPD_BIT | SDHCI_QUIRK_BROKEN_VOLTAGE |
+	    SDHCI_QUIRK_BROKEN_R1B | SDHCI_QUIRK_32BIT_DMA_ADDR |
+	    SDHCI_QUIRK_WAIT_SEND_CMD;
+
+	/* MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195 */
+	host->voltages = MMC_VDD_165_195;
+
+	ret = sdhci_setup_cfg(&plat->cfg, host, 200000000, 400000);
+	if (ret)
+		return ret;
+
+	upriv->mmc = &plat->mmc;
+	host->mmc = &plat->mmc;
+	host->mmc->priv = host;
+
+	return sdhci_probe(dev);
+}
+
+static const struct udevice_id sdhci_tangier_match[] = {
+	{ .compatible = "intel,sdhci-tangier" },
+	{ /* sentinel */ }
+};
+
+U_BOOT_DRIVER(sdhci_tangier) = {
+	.name		= "sdhci-tangier",
+	.id		= UCLASS_MMC,
+	.of_match	= sdhci_tangier_match,
+	.bind		= sdhci_tangier_bind,
+	.probe		= sdhci_tangier_probe,
+	.ops		= &sdhci_ops,
+	.priv_auto_alloc_size = sizeof(struct sdhci_host),
+	.platdata_auto_alloc_size = sizeof(struct sdhci_tangier_plat),
+};
-- 
2.11.0