[U-Boot] [U-Boot, 1/3] mmc: sh_sdhi: Add DM and DT probing support
Jaehoon Chung
jh80.chung at samsung.com
Thu Aug 17 05:38:52 UTC 2017
On 07/22/2017 06:22 AM, Marek Vasut wrote:
> Add MMC DM and DT probing support into the SH SDHI driver.
> This patch abstracts out the common bits of the send command
> and set ios functions, so they can be used both by DM and non
> DM setups and adds the DM probe support.
>
> Signed-off-by: Marek Vasut <marek.vasut+renesas at gmail.com>
> Cc: Hiroyuki Yokoyama <hiroyuki.yokoyama.vx at renesas.com>
> Cc: Nobuhiro Iwamatsu <iwamatsu at nigauri.org>
> Cc: Jaehoon Chung <jh80.chung at samsung.com>
> Reviewed-by: Nobuhiro Iwamatsu <iwamatsu at nigauri.org>
Applied to u-boot-mmc. Sorry for late!
Best Regards,
Jaehoon Chung
> ---
> drivers/mmc/sh_sdhi.c | 165 ++++++++++++++++++++++++++++++++++++++++++++------
> 1 file changed, 145 insertions(+), 20 deletions(-)
>
> diff --git a/drivers/mmc/sh_sdhi.c b/drivers/mmc/sh_sdhi.c
> index d181b63905..fd710399b6 100644
> --- a/drivers/mmc/sh_sdhi.c
> +++ b/drivers/mmc/sh_sdhi.c
> @@ -13,15 +13,18 @@
> #include <common.h>
> #include <malloc.h>
> #include <mmc.h>
> +#include <dm.h>
> #include <linux/errno.h>
> -#include <asm/io.h>
> +#include <linux/compat.h>
> +#include <linux/io.h>
> +#include <linux/sizes.h>
> #include <asm/arch/rmobile.h>
> #include <asm/arch/sh_sdhi.h>
>
> #define DRIVER_NAME "sh-sdhi"
>
> struct sh_sdhi_host {
> - unsigned long addr;
> + void __iomem *addr;
> int ch;
> int bus_shift;
> unsigned long quirks;
> @@ -50,11 +53,6 @@ static inline u16 sh_sdhi_readw(struct sh_sdhi_host *host, int reg)
> return readw(host->addr + (reg << host->bus_shift));
> }
>
> -static void *mmc_priv(struct mmc *mmc)
> -{
> - return (void *)mmc->priv;
> -}
> -
> static void sh_sdhi_detect(struct sh_sdhi_host *host)
> {
> sh_sdhi_writew(host, SDHI_OPTION,
> @@ -634,23 +632,17 @@ static int sh_sdhi_start_cmd(struct sh_sdhi_host *host,
> return ret;
> }
>
> -static int sh_sdhi_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
> - struct mmc_data *data)
> +static int sh_sdhi_send_cmd_common(struct sh_sdhi_host *host,
> + struct mmc_cmd *cmd, struct mmc_data *data)
> {
> - struct sh_sdhi_host *host = mmc_priv(mmc);
> - int ret;
> -
> host->sd_error = 0;
>
> - ret = sh_sdhi_start_cmd(host, data, cmd);
> -
> - return ret;
> + return sh_sdhi_start_cmd(host, data, cmd);
> }
>
> -static int sh_sdhi_set_ios(struct mmc *mmc)
> +static int sh_sdhi_set_ios_common(struct sh_sdhi_host *host, struct mmc *mmc)
> {
> int ret;
> - struct sh_sdhi_host *host = mmc_priv(mmc);
>
> ret = sh_sdhi_clock_control(host, mmc->clock);
> if (ret)
> @@ -674,9 +666,8 @@ static int sh_sdhi_set_ios(struct mmc *mmc)
> return 0;
> }
>
> -static int sh_sdhi_initialize(struct mmc *mmc)
> +static int sh_sdhi_initialize_common(struct sh_sdhi_host *host)
> {
> - struct sh_sdhi_host *host = mmc_priv(mmc);
> int ret = sh_sdhi_sync_reset(host);
>
> sh_sdhi_writew(host, SDHI_PORTSEL, USE_1PORT);
> @@ -692,6 +683,34 @@ static int sh_sdhi_initialize(struct mmc *mmc)
> return ret;
> }
>
> +#ifndef CONFIG_DM_MMC
> +static void *mmc_priv(struct mmc *mmc)
> +{
> + return (void *)mmc->priv;
> +}
> +
> +static int sh_sdhi_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
> + struct mmc_data *data)
> +{
> + struct sh_sdhi_host *host = mmc_priv(mmc);
> +
> + return sh_sdhi_send_cmd_common(host, cmd, data);
> +}
> +
> +static int sh_sdhi_set_ios(struct mmc *mmc)
> +{
> + struct sh_sdhi_host *host = mmc_priv(mmc);
> +
> + return sh_sdhi_set_ios_common(host, mmc);
> +}
> +
> +static int sh_sdhi_initialize(struct mmc *mmc)
> +{
> + struct sh_sdhi_host *host = mmc_priv(mmc);
> +
> + return sh_sdhi_initialize_common(host);
> +}
> +
> static const struct mmc_ops sh_sdhi_ops = {
> .send_cmd = sh_sdhi_send_cmd,
> .set_ios = sh_sdhi_set_ios,
> @@ -743,7 +762,7 @@ int sh_sdhi_init(unsigned long addr, int ch, unsigned long quirks)
> }
>
> host->ch = ch;
> - host->addr = addr;
> + host->addr = (void __iomem *)addr;
> host->quirks = quirks;
>
> if (host->quirks & SH_SDHI_QUIRK_64BIT_BUF)
> @@ -757,3 +776,109 @@ error:
> free(host);
> return ret;
> }
> +
> +#else
> +
> +struct sh_sdhi_plat {
> + struct mmc_config cfg;
> + struct mmc mmc;
> +};
> +
> +int sh_sdhi_dm_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
> + struct mmc_data *data)
> +{
> + struct sh_sdhi_host *host = dev_get_priv(dev);
> +
> + return sh_sdhi_send_cmd_common(host, cmd, data);
> +}
> +
> +int sh_sdhi_dm_set_ios(struct udevice *dev)
> +{
> + struct sh_sdhi_host *host = dev_get_priv(dev);
> + struct mmc *mmc = mmc_get_mmc_dev(dev);
> +
> + return sh_sdhi_set_ios_common(host, mmc);
> +}
> +
> +static const struct dm_mmc_ops sh_sdhi_dm_ops = {
> + .send_cmd = sh_sdhi_dm_send_cmd,
> + .set_ios = sh_sdhi_dm_set_ios,
> +};
> +
> +static int sh_sdhi_dm_bind(struct udevice *dev)
> +{
> + struct sh_sdhi_plat *plat = dev_get_platdata(dev);
> +
> + return mmc_bind(dev, &plat->mmc, &plat->cfg);
> +}
> +
> +static int sh_sdhi_dm_probe(struct udevice *dev)
> +{
> + struct sh_sdhi_plat *plat = dev_get_platdata(dev);
> + struct sh_sdhi_host *host = dev_get_priv(dev);
> + struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
> + const u32 quirks = dev_get_driver_data(dev);
> + fdt_addr_t base;
> +
> + base = devfdt_get_addr(dev);
> + if (base == FDT_ADDR_T_NONE)
> + return -EINVAL;
> +
> + host->addr = devm_ioremap(dev, base, SZ_2K);
> + if (!host->addr)
> + return -ENOMEM;
> +
> + host->quirks = quirks;
> +
> + if (host->quirks & SH_SDHI_QUIRK_64BIT_BUF)
> + host->bus_shift = 2;
> + else if (host->quirks & SH_SDHI_QUIRK_16BIT_BUF)
> + host->bus_shift = 1;
> +
> + plat->cfg.name = dev->name;
> + plat->cfg.host_caps = MMC_MODE_HS_52MHz | MMC_MODE_HS;
> +
> + switch (fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev), "bus-width",
> + 1)) {
> + case 8:
> + plat->cfg.host_caps |= MMC_MODE_8BIT;
> + break;
> + case 4:
> + plat->cfg.host_caps |= MMC_MODE_4BIT;
> + break;
> + case 1:
> + break;
> + default:
> + dev_err(dev, "Invalid \"bus-width\" value\n");
> + return -EINVAL;
> + }
> +
> + sh_sdhi_initialize_common(host);
> +
> + plat->cfg.voltages = MMC_VDD_165_195 | MMC_VDD_32_33 | MMC_VDD_33_34;
> + plat->cfg.f_min = CLKDEV_INIT;
> + plat->cfg.f_max = CLKDEV_HS_DATA;
> + plat->cfg.b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
> +
> + upriv->mmc = &plat->mmc;
> +
> + return 0;
> +}
> +
> +static const struct udevice_id sh_sdhi_sd_match[] = {
> + { .compatible = "renesas,sdhi-r8a7795", .data = SH_SDHI_QUIRK_64BIT_BUF },
> + { .compatible = "renesas,sdhi-r8a7796", .data = SH_SDHI_QUIRK_64BIT_BUF },
> + { /* sentinel */ }
> +};
> +
> +U_BOOT_DRIVER(sh_sdhi_mmc) = {
> + .name = "sh-sdhi-mmc",
> + .id = UCLASS_MMC,
> + .of_match = sh_sdhi_sd_match,
> + .bind = sh_sdhi_dm_bind,
> + .probe = sh_sdhi_dm_probe,
> + .priv_auto_alloc_size = sizeof(struct sh_sdhi_host),
> + .platdata_auto_alloc_size = sizeof(struct sh_sdhi_plat),
> + .ops = &sh_sdhi_dm_ops,
> +};
> +#endif
>
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