[PATCH 15/16] pinctrl: mediatek: adjust error code and message when some register not supported is found
From: sean.wang@mediatek.com (sean.wang at mediatek.com)
Date: 2018-08-27 10:10:33
Also in:
linux-gpio, linux-mediatek, lkml
Subsystem:
pin control subsystem, pin controller - mediatek, the rest · Maintainers:
Linus Walleij, Sean Wang, Linus Torvalds
From: Sean Wang <sean.wang@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.wang@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 7b7704c..98ef87e 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)
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2.7.4