Hi Jaehoon,

Thank you for the patch.
Could you check comments below?

Jaehoon Chung <jh80.ch...@samsung.com> wrote:
> This patch is change to use the sdhci-pltfm.c
> 
> Signed-off-by: Jaehoon Chung <jh80.ch...@samsung.com>
> Signed-off-by: Kyungmin Park <kyungmin.p...@samsung.com>
> ---
>  drivers/mmc/host/Kconfig     |   20 ++--
>  drivers/mmc/host/sdhci-s3c.c |  254 
> ++++++++++++++----------------------------
>  2 files changed, 95 insertions(+), 179 deletions(-)
> 
> diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
> index 0c9b3b1..21ea0ba 100644
> --- a/drivers/mmc/host/Kconfig
> +++ b/drivers/mmc/host/Kconfig
> @@ -169,6 +169,8 @@ config MMC_SDHCI_TEGRA
>  config MMC_SDHCI_S3C
>       tristate "SDHCI support on Samsung S3C SoC"
>       depends on MMC_SDHCI && PLAT_SAMSUNG
> +     depends on MMC_SDHCI_PLTFM
> +     select MMC_SDHCI_IO_ACCESSORS
>       help
>         This selects the Secure Digital Host Controller Interface (SDHCI)
>         often referrered to as the HSMMC block in some of the Samsung S3C
> @@ -181,6 +183,14 @@ config MMC_SDHCI_S3C
> 
>         If unsure, say N.
> 
> +config MMC_SDHCI_S3C_DMA
> +     bool "DMA support on S3C SDHCI"
> +     depends on MMC_SDHCI_S3C && EXPERIMENTAL
> +     help
> +       Enable DMA support on the Samsung S3C SDHCI glue. The DMA
> +       has proved to be problematic if the controller encounters
> +       certain errors, and thus should be treated with care.
> +
>  config MMC_SDHCI_PXAV3
>       tristate "Marvell MMP2 SD Host Controller support (PXAV3)"
>       depends on CLKDEV_LOOKUP
> @@ -219,16 +229,6 @@ config MMC_SDHCI_SPEAR
> 
>         If unsure, say N.
> 
> -config MMC_SDHCI_S3C_DMA
> -     bool "DMA support on S3C SDHCI"
> -     depends on MMC_SDHCI_S3C && EXPERIMENTAL
> -     help
> -       Enable DMA support on the Samsung S3C SDHCI glue. The DMA
> -       has proved to be problematic if the controller encounters
> -       certain errors, and thus should be treated with care.
> -
> -       YMMV.
> -
>  config MMC_OMAP
>       tristate "TI OMAP Multimedia Card Interface support"
>       depends on ARCH_OMAP
> diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c
> index 3bf509b..0778c38 100644
> --- a/drivers/mmc/host/sdhci-s3c.c
> +++ b/drivers/mmc/host/sdhci-s3c.c
> @@ -28,6 +28,7 @@
>  #include <plat/sdhci.h>
>  #include <plat/regs-sdhci.h>
> 
> +#include "sdhci-pltfm.h"
>  #include "sdhci.h"
> 
>  #define MAX_BUS_CLK  (4)
> @@ -46,9 +47,7 @@
>   * @clk_bus: The clocks that are available for the SD/MMC bus clock.
>   */
>  struct sdhci_s3c {
> -     struct sdhci_host       *host;
>       struct platform_device  *pdev;
> -     struct resource         *ioarea;
>       struct s3c_sdhci_platdata *pdata;
>       unsigned int            cur_clk;
>       int                     ext_cd_irq;
> @@ -71,11 +70,6 @@ struct sdhci_s3c_drv_data {
>       unsigned int    sdhci_quirks;
>  };
> 
> -static inline struct sdhci_s3c *to_s3c(struct sdhci_host *host)
> -{
> -     return sdhci_priv(host);
> -}
> -
>  /**
>   * get_curclk - convert ctrl2 register to clock source number
>   * @ctrl2: Control2 register value.
> @@ -90,7 +84,8 @@ static u32 get_curclk(u32 ctrl2)
> 
>  static void sdhci_s3c_check_sclk(struct sdhci_host *host)
>  {
> -     struct sdhci_s3c *ourhost = to_s3c(host);
> +     struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> +     struct sdhci_s3c *ourhost = pltfm_host->priv;
>       u32 tmp = readl(host->ioaddr + S3C_SDHCI_CONTROL2);
> 
>       if (get_curclk(tmp) != ourhost->cur_clk) {
> @@ -110,7 +105,8 @@ static void sdhci_s3c_check_sclk(struct sdhci_host *host)
>  */
>  static unsigned int sdhci_s3c_get_max_clk(struct sdhci_host *host)
>  {
> -     struct sdhci_s3c *ourhost = to_s3c(host);
> +     struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> +     struct sdhci_s3c *ourhost = pltfm_host->priv;
>       struct clk *busclk;
>       unsigned int rate, max;
>       int clk;
> @@ -138,11 +134,13 @@ static unsigned int sdhci_s3c_get_max_clk(struct 
> sdhci_host *host)
>   * @src: The source clock index.
>   * @wanted: The clock frequency wanted.
>   */
> -static unsigned int sdhci_s3c_consider_clock(struct sdhci_s3c *ourhost,
> +static unsigned int sdhci_s3c_consider_clock(struct sdhci_host *host,
>                                            unsigned int src,
>                                            unsigned int wanted)
>  {
>       unsigned long rate;
> +     struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> +     struct sdhci_s3c *ourhost = pltfm_host->priv;
>       struct clk *clksrc = ourhost->clk_bus[src];
>       int div;
> 
> @@ -153,7 +151,7 @@ static unsigned int sdhci_s3c_consider_clock(struct 
> sdhci_s3c *ourhost,
>        * If controller uses a non-standard clock division, find the best clock
>        * speed possible with selected clock source and skip the division.
>        */
> -     if (ourhost->host->quirks & SDHCI_QUIRK_NONSTANDARD_CLOCK) {
> +     if (host->quirks & SDHCI_QUIRK_NONSTANDARD_CLOCK) {
>               rate = clk_round_rate(clksrc, wanted);
>               return wanted - rate;
>       }
> @@ -181,7 +179,8 @@ static unsigned int sdhci_s3c_consider_clock(struct 
> sdhci_s3c *ourhost,
>  */
>  static void sdhci_s3c_set_clock(struct sdhci_host *host, unsigned int clock)
>  {
> -     struct sdhci_s3c *ourhost = to_s3c(host);
> +     struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> +     struct sdhci_s3c *ourhost = pltfm_host->priv;
>       unsigned int best = UINT_MAX;
>       unsigned int delta;
>       int best_src = 0;
> @@ -193,7 +192,7 @@ static void sdhci_s3c_set_clock(struct sdhci_host *host, 
> unsigned int clock)
>               return;
> 
>       for (src = 0; src < MAX_BUS_CLK; src++) {
> -             delta = sdhci_s3c_consider_clock(ourhost, src, clock);
> +             delta = sdhci_s3c_consider_clock(host, src, clock);
>               if (delta < best) {
>                       best = delta;
>                       best_src = src;
> @@ -251,12 +250,11 @@ static void sdhci_s3c_set_clock(struct sdhci_host 
> *host, unsigned int clock)
>  */
>  static unsigned int sdhci_s3c_get_min_clock(struct sdhci_host *host)
>  {
> -     struct sdhci_s3c *ourhost = to_s3c(host);
>       unsigned int delta, min = UINT_MAX;
>       int src;
> 
>       for (src = 0; src < MAX_BUS_CLK; src++) {
> -             delta = sdhci_s3c_consider_clock(ourhost, src, 0);
> +             delta = sdhci_s3c_consider_clock(host, src, 0);
>               if (delta == UINT_MAX)
>                       continue;
>               /* delta is a negative value in this case */
> @@ -269,27 +267,26 @@ static unsigned int sdhci_s3c_get_min_clock(struct 
> sdhci_host *host)
>  /* sdhci_cmu_get_max_clk - callback to get maximum clock frequency.*/
>  static unsigned int sdhci_cmu_get_max_clock(struct sdhci_host *host)
>  {
> -     struct sdhci_s3c *ourhost = to_s3c(host);
> +     struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> 
> -     return clk_round_rate(ourhost->clk_bus[ourhost->cur_clk], UINT_MAX);
> +     return clk_round_rate(pltfm_host->clk, UINT_MAX);
>  }
> 
>  /* sdhci_cmu_get_min_clock - callback to get minimal supported clock value. 
> */
>  static unsigned int sdhci_cmu_get_min_clock(struct sdhci_host *host)
>  {
> -     struct sdhci_s3c *ourhost = to_s3c(host);
> -
> +     struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
>       /*
>        * initial clock can be in the frequency range of
>        * 100KHz-400KHz, so we set it as max value.
>        */
> -     return clk_round_rate(ourhost->clk_bus[ourhost->cur_clk], 400000);
> +     return clk_round_rate(pltfm_host->clk, 400000);
>  }
> 
>  /* sdhci_cmu_set_clock - callback on clock change.*/
>  static void sdhci_cmu_set_clock(struct sdhci_host *host, unsigned int clock)
>  {
> -     struct sdhci_s3c *ourhost = to_s3c(host);
> +     struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
>       unsigned long timeout;
>       u16 clk = 0;
> 
> @@ -299,7 +296,7 @@ static void sdhci_cmu_set_clock(struct sdhci_host *host, 
> unsigned int clock)
> 
>       sdhci_s3c_set_clock(host, clock);
> 
> -     clk_set_rate(ourhost->clk_bus[ourhost->cur_clk], clock);
> +     clk_set_rate(pltfm_host->clk, clock);
> 
>       host->clock = clock;
> 
> @@ -426,7 +423,8 @@ static int __devinit sdhci_s3c_parse_dt(struct device 
> *dev,
>               struct sdhci_host *host, struct s3c_sdhci_platdata *pdata)
>  {
>       struct device_node *node = dev->of_node;
> -     struct sdhci_s3c *ourhost = to_s3c(host);
> +     struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> +     struct sdhci_s3c *ourhost = pltfm_host->priv;
>       u32 max_width;
>       int gpio, cnt, ret;
> 
> @@ -484,6 +482,7 @@ static int __devinit sdhci_s3c_parse_dt(struct device 
> *dev,
>                       dev_err(dev, "invalid gpio[%d]\n", cnt);
>                       goto err_free_dt_cd_gpio;
>               }
> +             p
Typo?

>               ourhost->gpios[cnt] = gpio;
>       }
> 
> @@ -529,62 +528,60 @@ static inline struct sdhci_s3c_drv_data 
> *sdhci_s3c_get_driver_data(
>                       platform_get_device_id(pdev)->driver_data;
>  }
> 
> +static struct sdhci_pltfm_data sdhci_s3c_pdata = {
> +     .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC |
> +             SDHCI_QUIRK_NO_HISPD_BIT | SDHCI_QUIRK_NO_BUSY_IRQ |
> +             SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12 |
> +             SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC |
> +             SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK |
> +             SDHCI_QUIRK_32BIT_DMA_ADDR | SDHCI_QUIRK_32BIT_DMA_SIZE,
> +     .ops    = &sdhci_s3c_ops,
> +};
> +
>  static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
>  {
> -     struct s3c_sdhci_platdata *pdata;
>       struct sdhci_s3c_drv_data *drv_data;
>       struct device *dev = &pdev->dev;
> +     struct sdhci_pltfm_host *pltfm_host;
> +     struct sdhci_pltfm_data *pltfm_pdata = &sdhci_s3c_pdata;
>       struct sdhci_host *host;
>       struct sdhci_s3c *sc;
> -     struct resource *res;
> -     int ret, irq, ptr, clks;
> +     int ret, ptr, clks;
> 
>       if (!pdev->dev.platform_data && !pdev->dev.of_node) {
>               dev_err(dev, "no device data specified\n");
>               return -ENOENT;
>       }
> 
> -     irq = platform_get_irq(pdev, 0);
> -     if (irq < 0) {
> -             dev_err(dev, "no irq specified\n");
> -             return irq;
> -     }
> -
> -     res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> -     if (!res) {
> -             dev_err(dev, "no memory specified\n");
> -             return -ENOENT;
> -     }
> -
> -     host = sdhci_alloc_host(dev, sizeof(struct sdhci_s3c));
> +     host = sdhci_pltfm_init(pdev, pltfm_pdata);
>       if (IS_ERR(host)) {
>               dev_err(dev, "sdhci_alloc_host() failed\n");
>               return PTR_ERR(host);
>       }
> -     sc = sdhci_priv(host);
> 
> -     pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
> -     if (!pdata) {
> +     sc = devm_kzalloc(dev, sizeof(struct sdhci_s3c), GFP_KERNEL);
> +     if (!sc) {
>               ret = -ENOMEM;
> -             goto err_pdata;
> +             goto err_alloc_host;
>       }
> 
> +     pltfm_host = sdhci_priv(host);
> +     pltfm_host->priv = sc;
> +
>       if (pdev->dev.of_node) {
> -             ret = sdhci_s3c_parse_dt(&pdev->dev, host, pdata);
> +             ret = sdhci_s3c_parse_dt(&pdev->dev, host, sc->pdata);
>               if (ret)
> -                     goto err_pdata;
> +                     goto err_alloc_host;
>       } else {
> -             memcpy(pdata, pdev->dev.platform_data, sizeof(*pdata));
> +             memcpy(&sc->pdata, &pdev->dev.platform_data, sizeof(sc->pdata));
>               sc->ext_cd_gpio = -1; /* invalid gpio number */
>       }
> 
>       drv_data = sdhci_s3c_get_driver_data(pdev);
> +     if (drv_data)
> +             host->quirks |= drv_data->sdhci_quirks;
> 
> -     sc->host = host;
>       sc->pdev = pdev;
> -     sc->pdata = pdata;
> -
> -     platform_set_drvdata(pdev, host);
> 
>       sc->clk_io = clk_get(dev, "hsmmc");
>       if (IS_ERR(sc->clk_io)) {
> @@ -602,9 +599,8 @@ static int __devinit sdhci_s3c_probe(struct 
> platform_device *pdev)
> 
>               snprintf(name, 14, "mmc_busclk.%d", ptr);
>               clk = clk_get(dev, name);
> -             if (IS_ERR(clk)) {
> +             if (IS_ERR(clk))
>                       continue;
> -             }
> 
>               clks++;
>               sc->clk_bus[ptr] = clk;
> @@ -613,7 +609,10 @@ static int __devinit sdhci_s3c_probe(struct 
> platform_device *pdev)
>                * save current clock index to know which clock bus
>                * is used later in overriding functions.
>                */
> -             sc->cur_clk = ptr;
> +             if (host->quirks & SDHCI_QUIRK_NONSTANDARD_CLOCK)
> +                     pltfm_host->clk = clk;
> +             else
We need to keep below?
According to two commits, this seems to be relevant to 
SDHCI_QUIRK_NONSTANDARD_CLOCK.
  mmc: sdhci-s3c: Support controllers with no internal clock 
divider(253e0a7c3dc4b)
  mmc: sdhci-s3c: Remove usage of clk_type member in platform 
data(b77d777eeb0a086)

Thanks,
Seungwon Jeon.

> +                     sc->cur_clk = ptr;
> 
>               clk_enable(clk);
> 
> @@ -627,63 +626,25 @@ static int __devinit sdhci_s3c_probe(struct 
> platform_device *pdev)
>               goto err_no_busclks;
>       }
> 
> -     sc->ioarea = request_mem_region(res->start, resource_size(res),
> -                                     mmc_hostname(host->mmc));
> -     if (!sc->ioarea) {
> -             dev_err(dev, "failed to reserve register area\n");
> -             ret = -ENXIO;
> -             goto err_req_regs;
> -     }
> -
> -     host->ioaddr = ioremap_nocache(res->start, resource_size(res));
> -     if (!host->ioaddr) {
> -             dev_err(dev, "failed to map registers\n");
> -             ret = -ENXIO;
> -             goto err_req_regs;
> -     }
> -
>       /* Ensure we have minimal gpio selected CMD/CLK/Detect */
> -     if (pdata->cfg_gpio)
> -             pdata->cfg_gpio(pdev, pdata->max_width);
> -
> -     host->hw_name = "samsung-hsmmc";
> -     host->ops = &sdhci_s3c_ops;
> -     host->quirks = 0;
> -     host->irq = irq;
> -
> -     /* Setup quirks for the controller */
> -     host->quirks |= SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC;
> -     host->quirks |= SDHCI_QUIRK_NO_HISPD_BIT;
> -     if (drv_data)
> -             host->quirks |= drv_data->sdhci_quirks;
> +     if (sc->pdata->cfg_gpio)
> +             sc->pdata->cfg_gpio(pdev, sc->pdata->max_width);
> 
>  #ifndef CONFIG_MMC_SDHCI_S3C_DMA
> -
>       /* we currently see overruns on errors, so disable the SDMA
>        * support as well. */
>       host->quirks |= SDHCI_QUIRK_BROKEN_DMA;
> 
>  #endif /* CONFIG_MMC_SDHCI_S3C_DMA */
> 
> -     /* It seems we do not get an DATA transfer complete on non-busy
> -      * transfers, not sure if this is a problem with this specific
> -      * SDHCI block, or a missing configuration that needs to be set. */
> -     host->quirks |= SDHCI_QUIRK_NO_BUSY_IRQ;
> -
> -     /* This host supports the Auto CMD12 */
> -     host->quirks |= SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12;
> -
> -     /* Samsung SoCs need BROKEN_ADMA_ZEROLEN_DESC */
> -     host->quirks |= SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC;
> -
> -     if (pdata->cd_type == S3C_SDHCI_CD_NONE ||
> -         pdata->cd_type == S3C_SDHCI_CD_PERMANENT)
> +     if (sc->pdata->cd_type == S3C_SDHCI_CD_NONE ||
> +         sc->pdata->cd_type == S3C_SDHCI_CD_PERMANENT)
>               host->quirks |= SDHCI_QUIRK_BROKEN_CARD_DETECTION;
> 
> -     if (pdata->cd_type == S3C_SDHCI_CD_PERMANENT)
> +     if (sc->pdata->cd_type == S3C_SDHCI_CD_PERMANENT)
>               host->mmc->caps = MMC_CAP_NONREMOVABLE;
> 
> -     switch (pdata->max_width) {
> +     switch (sc->pdata->max_width) {
>       case 8:
>               host->mmc->caps |= MMC_CAP_8_BIT_DATA;
>       case 4:
> @@ -691,17 +652,12 @@ static int __devinit sdhci_s3c_probe(struct 
> platform_device *pdev)
>               break;
>       }
> 
> -     if (pdata->host_caps)
> -             host->mmc->caps |= pdata->host_caps;
> -
> -     if (pdata->pm_caps)
> -             host->mmc->pm_caps |= pdata->pm_caps;
> -
> -     host->quirks |= (SDHCI_QUIRK_32BIT_DMA_ADDR |
> -                      SDHCI_QUIRK_32BIT_DMA_SIZE);
> +     /* It supports additional host capabilities if needed */
> +     if (sc->pdata->host_caps)
> +             host->mmc->caps |= sc->pdata->host_caps;
> 
> -     /* HSMMC on Samsung SoCs uses SDCLK as timeout clock */
> -     host->quirks |= SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK;
> +     if (sc->pdata->pm_caps)
> +             host->mmc->pm_caps |= sc->pdata->pm_caps;
> 
>       /*
>        * If controller does not have internal clock divider,
> @@ -713,10 +669,6 @@ static int __devinit sdhci_s3c_probe(struct 
> platform_device *pdev)
>               sdhci_s3c_ops.get_max_clock = sdhci_cmu_get_max_clock;
>       }
> 
> -     /* It supports additional host capabilities if needed */
> -     if (pdata->host_caps)
> -             host->mmc->caps |= pdata->host_caps;
> -
>       ret = sdhci_add_host(host);
>       if (ret) {
>               dev_err(dev, "sdhci_add_host() failed\n");
> @@ -726,38 +678,35 @@ static int __devinit sdhci_s3c_probe(struct 
> platform_device *pdev)
>       /* The following two methods of card detection might call
>          sdhci_s3c_notify_change() immediately, so they can be called
>          only after sdhci_add_host(). Setup errors are ignored. */
> -     if (pdata->cd_type == S3C_SDHCI_CD_EXTERNAL && pdata->ext_cd_init)
> -             pdata->ext_cd_init(&sdhci_s3c_notify_change);
> -     if (pdata->cd_type == S3C_SDHCI_CD_GPIO &&
> -         gpio_is_valid(pdata->ext_cd_gpio))
> +     if (sc->pdata->cd_type == S3C_SDHCI_CD_EXTERNAL &&
> +                     sc->pdata->ext_cd_init)
> +             sc->pdata->ext_cd_init(&sdhci_s3c_notify_change);
> +     if (sc->pdata->cd_type == S3C_SDHCI_CD_GPIO &&
> +         gpio_is_valid(sc->pdata->ext_cd_gpio))
>               sdhci_s3c_setup_card_detect_gpio(sc);
> 
>       return 0;
> 
> - err_add_host:
> -     release_resource(sc->ioarea);
> -     kfree(sc->ioarea);
> -
> - err_req_regs:
> +err_add_host:
>       for (ptr = 0; ptr < MAX_BUS_CLK; ptr++) {
>               if (sc->clk_bus[ptr]) {
>                       clk_disable(sc->clk_bus[ptr]);
>                       clk_put(sc->clk_bus[ptr]);
>               }
>       }
> -
> - err_no_busclks:
> +err_no_busclks:
>       clk_disable(sc->clk_io);
>       clk_put(sc->clk_io);
> 
> - err_io_clk:
> +err_io_clk:
>       for (ptr = 0; ptr < NUM_GPIOS(sc->pdata->max_width); ptr++)
>               gpio_free(sc->gpios[ptr]);
> -     if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL)
> +     if (sc->pdata->cd_type == S3C_SDHCI_CD_INTERNAL)
>               gpio_free(sc->ext_cd_gpio);
> 
> - err_pdata:
> -     sdhci_free_host(host);
> +err_alloc_host:
> +     sdhci_pltfm_free(pdev);
> +     dev_err(&pdev->dev, "%s failed %d\n", __func__, ret);
> 
>       return ret;
>  }
> @@ -765,12 +714,13 @@ static int __devinit sdhci_s3c_probe(struct 
> platform_device *pdev)
>  static int __devexit sdhci_s3c_remove(struct platform_device *pdev)
>  {
>       struct sdhci_host *host =  platform_get_drvdata(pdev);
> -     struct sdhci_s3c *sc = sdhci_priv(host);
> -     struct s3c_sdhci_platdata *pdata = sc->pdata;
> -     int ptr;
> +     struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> +     struct sdhci_s3c *sc = pltfm_host->priv;
> +     int ptr, ret;
> 
> -     if (pdata->cd_type == S3C_SDHCI_CD_EXTERNAL && pdata->ext_cd_cleanup)
> -             pdata->ext_cd_cleanup(&sdhci_s3c_notify_change);
> +     if (sc->pdata->cd_type == S3C_SDHCI_CD_EXTERNAL &&
> +                     sc->pdata->ext_cd_cleanup)
> +             sc->pdata->ext_cd_cleanup(&sdhci_s3c_notify_change);
> 
>       if (sc->ext_cd_irq)
>               free_irq(sc->ext_cd_irq, sc);
> @@ -778,9 +728,9 @@ static int __devexit sdhci_s3c_remove(struct 
> platform_device *pdev)
>       if (gpio_is_valid(sc->ext_cd_gpio))
>               gpio_free(sc->ext_cd_gpio);
> 
> -     sdhci_remove_host(host, 1);
> +     ret = sdhci_pltfm_unregister(pdev);
> 
> -     for (ptr = 0; ptr < 3; ptr++) {
> +     for (ptr = 0; ptr < MAX_BUS_CLK; ptr++) {
>               if (sc->clk_bus[ptr]) {
>                       clk_disable(sc->clk_bus[ptr]);
>                       clk_put(sc->clk_bus[ptr]);
> @@ -789,48 +739,14 @@ static int __devexit sdhci_s3c_remove(struct 
> platform_device *pdev)
>       clk_disable(sc->clk_io);
>       clk_put(sc->clk_io);
> 
> -     iounmap(host->ioaddr);
> -     release_resource(sc->ioarea);
> -     kfree(sc->ioarea);
> -
>       if (pdev->dev.of_node) {
>               for (ptr = 0; ptr < NUM_GPIOS(sc->pdata->max_width); ptr++)
>                       gpio_free(sc->gpios[ptr]);
>       }
> 
> -     sdhci_free_host(host);
> -     platform_set_drvdata(pdev, NULL);
> -
> -     return 0;
> -}
> -
> -#ifdef CONFIG_PM
> -
> -static int sdhci_s3c_suspend(struct device *dev)
> -{
> -     struct sdhci_host *host = dev_get_drvdata(dev);
> -
> -     return sdhci_suspend_host(host);
> -}
> -
> -static int sdhci_s3c_resume(struct device *dev)
> -{
> -     struct sdhci_host *host = dev_get_drvdata(dev);
> -
> -     return sdhci_resume_host(host);
> +     return ret;
>  }
> 
> -static const struct dev_pm_ops sdhci_s3c_pmops = {
> -     .suspend        = sdhci_s3c_suspend,
> -     .resume         = sdhci_s3c_resume,
> -};
> -
> -#define SDHCI_S3C_PMOPS (&sdhci_s3c_pmops)
> -
> -#else
> -#define SDHCI_S3C_PMOPS NULL
> -#endif
> -
>  #if defined(CONFIG_CPU_EXYNOS4210) || defined(CONFIG_SOC_EXYNOS4212)
>  static struct sdhci_s3c_drv_data exynos4_sdhci_drv_data = {
>       .sdhci_quirks = SDHCI_QUIRK_NONSTANDARD_CLOCK,
> @@ -870,7 +786,7 @@ static struct platform_driver sdhci_s3c_driver = {
>               .owner  = THIS_MODULE,
>               .name   = "s3c-sdhci",
>               .of_match_table = of_match_ptr(sdhci_s3c_dt_match),
> -             .pm     = SDHCI_S3C_PMOPS,
> +             .pm     = SDHCI_PLTFM_PMOPS,
>       },
>  };
> 
> --
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