mmc: synquacer: Add SynQuacer F_SDH30 SDHCI driver

Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
Signed-off-by: Masami Hiramatsu <masami.hiramatsu@linaro.org>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>

diff --git a/drivers/mmc/Kconfig b/drivers/mmc/Kconfig
index 0909f502a16ff936572ec53baeb99f9f8f62fd69..63152aae4ddc178431819b58294d35c7d8e25d19 100644 (file)
--- a/drivers/mmc/Kconfig
+++ b/drivers/mmc/Kconfig
@@ -561,6 +561,16 @@ config MMC_SDHCI_IPROC
 
          If unsure, say N.
 
+config MMC_SDHCI_F_SDH30
+       bool "SDHCI support for Fujitsu Semiconductor F_SDH30"
+       depends on BLK && DM_MMC
+       depends on MMC_SDHCI
+       help
+         This selects the Secure Digital Host Controller Interface (SDHCI)
+         Needed by some Fujitsu SoC for MMC / SD / SDIO support.
+         If you have a controller with this interface, say Y or M here.
+         If unsure, say N.
+
 config MMC_SDHCI_KONA
        bool "SDHCI support on Broadcom KONA platform"
        depends on MMC_SDHCI

diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile
index 89d6af3db30b9a729bb55af8132f29fb11ef6fed..f5fd59093e3ac807434014404d03e56165f59530 100644 (file)
--- a/drivers/mmc/Makefile
+++ b/drivers/mmc/Makefile
@@ -76,3 +76,4 @@ obj-$(CONFIG_MMC_UNIPHIER)            += tmio-common.o uniphier-sd.o
 obj-$(CONFIG_RENESAS_SDHI)             += tmio-common.o renesas-sdhi.o
 obj-$(CONFIG_MMC_BCM2835)              += bcm2835_sdhost.o
 obj-$(CONFIG_MMC_MTK)                  += mtk-sd.o
+obj-$(CONFIG_MMC_SDHCI_F_SDH30)                += f_sdh30.o

diff --git a/drivers/mmc/f_sdh30.c b/drivers/mmc/f_sdh30.c
new file mode 100644 (file)
index 0000000..3a85d9e
--- /dev/null
+++ b/drivers/mmc/f_sdh30.c
@@ -0,0 +1,81 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Socionext F_SDH30 eMMC driver
+ * Copyright 2021 Linaro Ltd.
+ * Copyright 2021 Socionext, Inc.
+ */
+
+#include <common.h>
+#include <clk.h>
+#include <dm.h>
+#include <malloc.h>
+#include <sdhci.h>
+
+struct f_sdh30_plat {
+       struct mmc_config cfg;
+       struct mmc mmc;
+};
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static int f_sdh30_sdhci_probe(struct udevice *dev)
+{
+       struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
+       struct f_sdh30_plat *plat = dev_get_plat(dev);
+       struct sdhci_host *host = dev_get_priv(dev);
+       int ret;
+
+       ret = mmc_of_parse(dev, &plat->cfg);
+       if (ret)
+               return ret;
+
+       host->mmc = &plat->mmc;
+       host->mmc->dev = dev;
+       host->mmc->priv = host;
+
+       ret = sdhci_setup_cfg(&plat->cfg, host, 200000000, 400000);
+       if (ret)
+               return ret;
+
+       upriv->mmc = host->mmc;
+
+       mmc_set_clock(host->mmc, host->mmc->cfg->f_min, MMC_CLK_ENABLE);
+
+       return sdhci_probe(dev);
+}
+
+static int f_sdh30_of_to_plat(struct udevice *dev)
+{
+       struct sdhci_host *host = dev_get_priv(dev);
+
+       host->name = strdup(dev->name);
+       host->ioaddr = dev_read_addr_ptr(dev);
+       host->bus_width = dev_read_u32_default(dev, "bus-width", 4);
+       host->index = dev_read_u32_default(dev, "index", 0);
+
+       return 0;
+}
+
+static int f_sdh30_bind(struct udevice *dev)
+{
+       struct f_sdh30_plat *plat = dev_get_plat(dev);
+
+       return sdhci_bind(dev, &plat->mmc, &plat->cfg);
+}
+
+static const struct udevice_id f_sdh30_mmc_ids[] = {
+       { .compatible = "fujitsu,mb86s70-sdhci-3.0" },
+       { }
+};
+
+U_BOOT_DRIVER(f_sdh30_drv) = {
+       .name           = "f_sdh30_sdhci",
+       .id             = UCLASS_MMC,
+       .of_match       = f_sdh30_mmc_ids,
+       .of_to_plat     = f_sdh30_of_to_plat,
+       .ops            = &sdhci_ops,
+       .bind           = f_sdh30_bind,
+       .probe          = f_sdh30_sdhci_probe,
+       .priv_auto      = sizeof(struct sdhci_host),
+       .plat_auto      = sizeof(struct f_sdh30_plat),
+};