With device core now able to setup the default pin configuration,
the pin configuration code based on the deprecated Samsung specific
gpio bindings is removed.

Signed-off-by: Thomas Abraham <thomas.abra...@linaro.org>
Acked-by: Linus Walleij <linus.wall...@linaro.org>
Reviewed-by: Doug Anderson <diand...@chromium.org>
Tested-by: Doug Anderson <diand...@chromium.org>
Acked-by: Seungwon Jeon <tgih....@samsung.com>
---
Changes since v4:
- Fixed the incorrecr return path after error in enabling vmmc regulator
  as pointed out by Doug.

Changes since v3:
- Rebased to the latest mmc-next branch, resolving the compilation
  error with this patch due to changes in commit f2f942ce
  "mmc: dw_mmc: Check return value of regulator_enable".
  Thanks to Doug for pointing out this issue with the v3 patch.

 drivers/mmc/host/dw_mmc-exynos.c |   38 --------------------------------------
 drivers/mmc/host/dw_mmc.c        |    8 --------
 drivers/mmc/host/dw_mmc.h        |    3 ---
 3 files changed, 0 insertions(+), 49 deletions(-)

diff --git a/drivers/mmc/host/dw_mmc-exynos.c b/drivers/mmc/host/dw_mmc-exynos.c
index c7f0976..f013e7e 100644
--- a/drivers/mmc/host/dw_mmc-exynos.c
+++ b/drivers/mmc/host/dw_mmc-exynos.c
@@ -152,43 +152,6 @@ static int dw_mci_exynos_parse_dt(struct dw_mci *host)
        return 0;
 }
 
-static int dw_mci_exynos_setup_bus(struct dw_mci *host,
-                               struct device_node *slot_np, u8 bus_width)
-{
-       int idx, gpio, ret;
-
-       if (!slot_np)
-               return -EINVAL;
-
-       /* cmd + clock + bus-width pins */
-       for (idx = 0; idx < NUM_PINS(bus_width); idx++) {
-               gpio = of_get_gpio(slot_np, idx);
-               if (!gpio_is_valid(gpio)) {
-                       dev_err(host->dev, "invalid gpio: %d\n", gpio);
-                       return -EINVAL;
-               }
-
-               ret = devm_gpio_request(host->dev, gpio, "dw-mci-bus");
-               if (ret) {
-                       dev_err(host->dev, "gpio [%d] request failed\n", gpio);
-                       return -EBUSY;
-               }
-       }
-
-       if (host->pdata->quirks & DW_MCI_QUIRK_BROKEN_CARD_DETECTION)
-               return 0;
-
-       gpio = of_get_named_gpio(slot_np, "samsung,cd-pinmux-gpio", 0);
-       if (gpio_is_valid(gpio)) {
-               if (devm_gpio_request(host->dev, gpio, "dw-mci-cd"))
-                       dev_err(host->dev, "gpio [%d] request failed\n", gpio);
-       } else {
-               dev_info(host->dev, "cd gpio not available");
-       }
-
-       return 0;
-}
-
 /* Common capabilities of Exynos4/Exynos5 SoC */
 static unsigned long exynos_dwmmc_caps[4] = {
        MMC_CAP_UHS_DDR50 | MMC_CAP_1_8V_DDR |
@@ -205,7 +168,6 @@ static const struct dw_mci_drv_data exynos_drv_data = {
        .prepare_command        = dw_mci_exynos_prepare_command,
        .set_ios                = dw_mci_exynos_set_ios,
        .parse_dt               = dw_mci_exynos_parse_dt,
-       .setup_bus              = dw_mci_exynos_setup_bus,
 };
 
 static const struct of_device_id dw_mci_exynos_match[] = {
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 45d9216..bc3a1bc 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -1952,14 +1952,6 @@ static int dw_mci_init_slot(struct dw_mci *host, 
unsigned int id)
        else
                bus_width = 1;
 
-       if (drv_data && drv_data->setup_bus) {
-               struct device_node *slot_np;
-               slot_np = dw_mci_of_find_slot_node(host->dev, slot->id);
-               ret = drv_data->setup_bus(host, slot_np, bus_width);
-               if (ret)
-                       goto err_setup_bus;
-       }
-
        switch (bus_width) {
        case 8:
                mmc->caps |= MMC_CAP_8_BIT_DATA;
diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h
index 53b8fd9..0b74189 100644
--- a/drivers/mmc/host/dw_mmc.h
+++ b/drivers/mmc/host/dw_mmc.h
@@ -190,7 +190,6 @@ extern int dw_mci_resume(struct dw_mci *host);
  * @prepare_command: handle CMD register extensions.
  * @set_ios: handle bus specific extensions.
  * @parse_dt: parse implementation specific device tree properties.
- * @setup_bus: initialize io-interface
  *
  * Provide controller implementation specific extensions. The usage of this
  * data structure is fully optional and usage of each member in this structure
@@ -203,7 +202,5 @@ struct dw_mci_drv_data {
        void            (*prepare_command)(struct dw_mci *host, u32 *cmdr);
        void            (*set_ios)(struct dw_mci *host, struct mmc_ios *ios);
        int             (*parse_dt)(struct dw_mci *host);
-       int             (*setup_bus)(struct dw_mci *host,
-                               struct device_node *slot_np, u8 bus_width);
 };
 #endif /* _DW_MMC_H_ */
-- 
1.6.6.rc2

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