[PATCH v2 15/22] pinctrl: mediatek: adjust error code and message when some register not supported is found

[sean.wang]

From: Sean Wang <sean.w...@mediatek.com>

It's usual and not an error for there's some register not supported by a
certain SoC or a pin so that in the case we have to adjust the message to
print and the error code to get rid of unnecessary false alarm.

Signed-off-by: Sean Wang <sean.w...@mediatek.com>
---
 drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c | 35 ++++++++++++------------
 1 file changed, 18 insertions(+), 17 deletions(-)

diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c 
b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
index 18a3548..7cdd46f 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
@@ -61,12 +61,21 @@ void mtk_rmw(struct mtk_pinctrl *pctl, u8 i, u32 reg, u32 
mask, u32 set)
 
 static int mtk_hw_pin_field_lookup(struct mtk_pinctrl *hw,
                                   const struct mtk_pin_desc *desc,
-                                  const struct mtk_pin_reg_calc *rc,
-                                  struct mtk_pin_field *pfd)
+                                  int field, struct mtk_pin_field *pfd)
 {
        const struct mtk_pin_field_calc *c, *e;
+       const struct mtk_pin_reg_calc *rc;
        u32 bits;
 
+       if (hw->soc->reg_cal && hw->soc->reg_cal[field].range) {
+               rc = &hw->soc->reg_cal[field];
+       } else {
+               dev_dbg(hw->dev,
+                       "Not support field %d for pin %d (%s)\n",
+                       field, desc->number, desc->name);
+               return -ENOTSUPP;
+       }
+
        c = rc->range;
        e = c + rc->nranges;
 
@@ -77,14 +86,15 @@ static int mtk_hw_pin_field_lookup(struct mtk_pinctrl *hw,
        }
 
        if (c >= e) {
-               dev_err(hw->dev, "Out of range for pin = %d (%s)\n",
-                       desc->number, desc->name);
-               return -EINVAL;
+               dev_dbg(hw->dev, "Not support field %d for pin = %d (%s)\n",
+                       field, desc->number, desc->name);
+               return -ENOTSUPP;
        }
 
        if (c->i_base > hw->nbase - 1) {
-               dev_err(hw->dev, "Invalid base is found for pin = %d (%s)\n",
-                       desc->number, desc->name);
+               dev_err(hw->dev,
+                       "Invalid base for field %d for pin = %d (%s)\n",
+                       field, desc->number, desc->name);
                return -EINVAL;
        }
 
@@ -116,21 +126,12 @@ static int mtk_hw_pin_field_get(struct mtk_pinctrl *hw,
                                const struct mtk_pin_desc *desc,
                                int field, struct mtk_pin_field *pfd)
 {
-       const struct mtk_pin_reg_calc *rc;
-
        if (field < 0 || field >= PINCTRL_PIN_REG_MAX) {
                dev_err(hw->dev, "Invalid Field %d\n", field);
                return -EINVAL;
        }
 
-       if (hw->soc->reg_cal && hw->soc->reg_cal[field].range) {
-               rc = &hw->soc->reg_cal[field];
-       } else {
-               dev_err(hw->dev, "Undefined range for field %d\n", field);
-               return -EINVAL;
-       }
-
-       return mtk_hw_pin_field_lookup(hw, desc, rc, pfd);
+       return mtk_hw_pin_field_lookup(hw, desc, field, pfd);
 }
 
 static void mtk_hw_bits_part(struct mtk_pin_field *pf, int *h, int *l)
-- 
2.7.4