[PATCH v3 07/14] mmc: synquacer: Add SynQuacer F_SDH30 SDHCI driver

[Jaehoon Chung]

On 5/10/21 3:32 PM, Masami Hiramatsu wrote:
> From: Jassi Brar <jaswinder.singh at linaro.org>
> 
> Signed-off-by: Jassi Brar <jaswinder.singh at linaro.org>
> Signed-off-by: Masami Hiramatsu <masami.hiramatsu at linaro.org>

Reviewed-by: Jaehoon Chung <jh80.chung at samsung.com>

Best Regards,
Jaehoon Chung

> ---
>  Changes in v3:
>   - Rename config name to MMC_SDHCI_F_SDH30.
>   - Remove unneeded wait in drivers/mmc/sdhci.c.
>   - Rename probe function to f_sdh30_sdhci_probe.
> ---
>  drivers/mmc/Kconfig   |   10 ++++++
>  drivers/mmc/Makefile  |    1 +
>  drivers/mmc/f_sdh30.c |   81 +++++++++++++++++++++++++++++++++++++++++++++++++
>  3 files changed, 92 insertions(+)
>  create mode 100644 drivers/mmc/f_sdh30.c
> 
> diff --git a/drivers/mmc/Kconfig b/drivers/mmc/Kconfig
> index f4ad1db45d..026b6f7d24 100644
> --- a/drivers/mmc/Kconfig
> +++ b/drivers/mmc/Kconfig
> @@ -559,6 +559,16 @@ 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 89d6af3db3..f5fd59093e 100644
> --- 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
> index 0000000000..3a85d9e348
> --- /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),
> +};
> 
>