pinctrl: exynos: Refactor handling the pin related dt properties

All pin related dt properties (pin-function, pin-pud and pin-drv) are
handled in a very similar way. Get rid of that code duplication by
extracting the corresponding data knowledge into an actual data
structure (array), and then just iterating over it.

No functional change, it's a refactoring commit.

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

diff --git a/drivers/pinctrl/exynos/pinctrl-exynos.c b/drivers/pinctrl/exynos/pinctrl-exynos.c
index 9a51653be8646c006119d52f223718e9e18749e1..e79ce5113d848702738fc2a3e2f06010287aa3a7 100644 (file)
--- a/drivers/pinctrl/exynos/pinctrl-exynos.c
+++ b/drivers/pinctrl/exynos/pinctrl-exynos.c
@@ -21,6 +21,13 @@ const struct samsung_pin_bank_type bank_type_alive = {
        .reg_offset = { 0x00, 0x04, 0x08, 0x0c, },
 };
 
+static const char * const exynos_pinctrl_props[PINCFG_TYPE_NUM] = {
+       [PINCFG_TYPE_FUNC]      = "samsung,pin-function",
+       [PINCFG_TYPE_DAT]       = "samsung,pin-val",
+       [PINCFG_TYPE_PUD]       = "samsung,pin-pud",
+       [PINCFG_TYPE_DRV]       = "samsung,pin-drv",
+};
+
 /**
  * exynos_pinctrl_setup_peri: setup pinctrl for a peripheral.
  * conf: soc specific pin configuration data array
@@ -114,7 +121,7 @@ int exynos_pinctrl_set_state(struct udevice *dev, struct udevice *config)
        const void *fdt = gd->fdt_blob;
        int node = dev_of_offset(config);
        unsigned int count, idx, pin_num;
-       unsigned int pinfunc, pinpud, pindrv;
+       unsigned int pinvals[PINCFG_TYPE_NUM];
        unsigned long reg;
        const char *name;
 
@@ -126,13 +133,16 @@ int exynos_pinctrl_set_state(struct udevice *dev, struct udevice *config)
        if (count <= 0)
                return -EINVAL;
 
-       pinfunc = fdtdec_get_int(fdt, node, "samsung,pin-function", -1);
-       pinpud = fdtdec_get_int(fdt, node, "samsung,pin-pud", -1);
-       pindrv = fdtdec_get_int(fdt, node, "samsung,pin-drv", -1);
+       for (idx = 0; idx < PINCFG_TYPE_NUM; ++idx) {
+               pinvals[idx] = fdtdec_get_int(fdt, node,
+                                             exynos_pinctrl_props[idx], -1);
+       }
+       pinvals[PINCFG_TYPE_DAT] = -1; /* ignore GPIO data register */
 
        for (idx = 0; idx < count; idx++) {
                const struct samsung_pin_bank_data *bank;
                char bank_name[10];
+               int pincfg;
 
                name = fdt_stringlist_get(fdt, node, "samsung,pins", idx, NULL);
                if (!name)
@@ -141,19 +151,12 @@ int exynos_pinctrl_set_state(struct udevice *dev, struct udevice *config)
                bank = get_bank(dev, bank_name);
                reg = priv->base + bank->offset;
 
-               if (pinfunc != -1) {
-                       exynos_pinctrl_set_pincfg(reg, pin_num, pinfunc,
-                                                 PINCFG_TYPE_FUNC, bank->type);
-               }
-
-               if (pinpud != -1) {
-                       exynos_pinctrl_set_pincfg(reg, pin_num, pinpud,
-                                                 PINCFG_TYPE_PUD, bank->type);
-               }
+               for (pincfg = 0; pincfg < PINCFG_TYPE_NUM; ++pincfg) {
+                       unsigned int val = pinvals[pincfg];
 
-               if (pindrv != -1) {
-                       exynos_pinctrl_set_pincfg(reg, pin_num, pindrv,
-                                                 PINCFG_TYPE_DRV, bank->type);
+                       if (val != -1)
+                               exynos_pinctrl_set_pincfg(reg, pin_num, val,
+                                                         pincfg, bank->type);
                }
        }