pinctrl: baytrail: Factor out byt_gpio_force_input_mode()

There is a piece of code that it being used at least twice.
Factor it out.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>

diff --git a/drivers/pinctrl/intel/pinctrl-baytrail.c b/drivers/pinctrl/intel/pinctrl-baytrail.c
index f1af21d..291f045 100644 (file)
--- a/drivers/pinctrl/intel/pinctrl-baytrail.c
+++ b/drivers/pinctrl/intel/pinctrl-baytrail.c
@@ -829,6 +829,24 @@ static int byt_set_pull_strength(u32 *reg, u16 strength)
        return 0;
 }
 
+static void byt_gpio_force_input_mode(struct intel_pinctrl *vg, unsigned int offset)
+{
+       void __iomem *reg = byt_gpio_reg(vg, offset, BYT_VAL_REG);
+       u32 value;
+
+       value = readl(reg);
+       if (!(value & BYT_INPUT_EN))
+               return;
+
+       /*
+        * Pull assignment is only applicable in input mode. If
+        * chip is not in input mode, set it and warn about it.
+        */
+       value &= ~BYT_INPUT_EN;
+       writel(value, reg);
+       dev_warn(vg->dev, "Pin %i: forcibly set to input mode\n", offset);
+}
+
 static int byt_pin_config_get(struct pinctrl_dev *pctl_dev, unsigned int offset,
                              unsigned long *config)
 {
@@ -919,9 +937,8 @@ static int byt_pin_config_set(struct pinctrl_dev *pctl_dev,
 {
        struct intel_pinctrl *vg = pinctrl_dev_get_drvdata(pctl_dev);
        void __iomem *conf_reg = byt_gpio_reg(vg, offset, BYT_CONF0_REG);
-       void __iomem *val_reg = byt_gpio_reg(vg, offset, BYT_VAL_REG);
        void __iomem *db_reg = byt_gpio_reg(vg, offset, BYT_DEBOUNCE_REG);
-       u32 conf, val, db_pulse, debounce;
+       u32 conf, db_pulse, debounce;
        enum pin_config_param param;
        unsigned long flags;
        int i, ret = 0;
@@ -930,7 +947,6 @@ static int byt_pin_config_set(struct pinctrl_dev *pctl_dev,
        raw_spin_lock_irqsave(&byt_lock, flags);
 
        conf = readl(conf_reg);
-       val = readl(val_reg);
 
        for (i = 0; i < num_configs; i++) {
                param = pinconf_to_config_param(configs[i]);
@@ -945,15 +961,7 @@ static int byt_pin_config_set(struct pinctrl_dev *pctl_dev,
                        if (arg == 1)
                                arg = 2000;
 
-                       /*
-                        * Pull assignment is only applicable in input mode. If
-                        * chip is not in input mode, set it and warn about it.
-                        */
-                       if (val & BYT_INPUT_EN) {
-                               val &= ~BYT_INPUT_EN;
-                               writel(val, val_reg);
-                               dev_warn(vg->dev, "Pin %i: forcibly set to input mode\n", offset);
-                       }
+                       byt_gpio_force_input_mode(vg, offset);
 
                        conf &= ~BYT_PULL_ASSIGN_MASK;
                        conf |= BYT_PULL_ASSIGN_DOWN;
@@ -965,15 +973,7 @@ static int byt_pin_config_set(struct pinctrl_dev *pctl_dev,
                        if (arg == 1)
                                arg = 2000;
 
-                       /*
-                        * Pull assignment is only applicable in input mode. If
-                        * chip is not in input mode, set it and warn about it.
-                        */
-                       if (val & BYT_INPUT_EN) {
-                               val &= ~BYT_INPUT_EN;
-                               writel(val, val_reg);
-                               dev_warn(vg->dev, "Pin %i: forcibly set to input mode\n", offset);
-                       }
+                       byt_gpio_force_input_mode(vg, offset);
 
                        conf &= ~BYT_PULL_ASSIGN_MASK;
                        conf |= BYT_PULL_ASSIGN_UP;