pinctrl: exynos: Extract pin parsing code into a separate function

Next commits are going to re-design the pin_to_bank_base() function and
its usage in a way that the pin parsing code will be called separately.
Extract it into a separate function first, as a refactoring commit.

No functional change.

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 995a3a0ee5fd6b459e63390e8ee33042b773d41e..2d194ba0a4b5ff90548146da83da1b32294cfbe3 100644 (file)
--- a/drivers/pinctrl/exynos/pinctrl-exynos.c
+++ b/drivers/pinctrl/exynos/pinctrl-exynos.c
@@ -34,6 +34,22 @@ void exynos_pinctrl_setup_peri(struct exynos_pinctrl_config_data *conf,
        }
 }
 
+static void parse_pin(const char *pin_name, u32 *pin, char *bank_name)
+{
+       u32 idx = 0;
+
+       /*
+        * The format of the pin name is <bank_name name>-<pin_number>.
+        * Example: gpa0-4 (gpa0 is the bank_name name and 4 is the pin number.
+        */
+       while (pin_name[idx] != '-') {
+               bank_name[idx] = pin_name[idx];
+               idx++;
+       }
+       bank_name[idx] = '\0';
+       *pin = pin_name[++idx] - '0';
+}
+
 /* given a pin-name, return the address of pin config registers */
 static unsigned long pin_to_bank_base(struct udevice *dev, const char *pin_name,
                                                u32 *pin)
@@ -44,16 +60,7 @@ static unsigned long pin_to_bank_base(struct udevice *dev, const char *pin_name,
        u32 nr_banks, pin_ctrl_idx = 0, idx = 0, bank_base;
        char bank[10];
 
-       /*
-        * The format of the pin name is <bank name>-<pin_number>.
-        * Example: gpa0-4 (gpa0 is the bank name and 4 is the pin number.
-        */
-       while (pin_name[idx] != '-') {
-               bank[idx] = pin_name[idx];
-               idx++;
-       }
-       bank[idx] = '\0';
-       *pin = pin_name[++idx] - '0';
+       parse_pin(pin_name, pin, bank);
 
        /* lookup the pin bank data using the pin bank name */
        while (true) {