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pinctrl: mediatek: add pullen, pullsel register support to pinctrl-mtk-common-v2.c 

Certain SoCs have to program an extra PULLEN, PULLSEL register to configure
bias related function so that we add it in the existing path.

Signed-off-by: Ryder.Lee <ryder.lee@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Sean Wang 2018-09-08 19:07:27 +08:00 committed by Linus Walleij
parent 182c842fd5
commit 9afc305bfa
2 changed files with 91 additions and 0 deletions
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76
drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
View File

@ -190,6 +190,7 @@ int mtk_hw_get_value(struct mtk_pinctrl *hw, int pin, int field, int *value)
return 0;
}
/* Revision 0 */
int mtk_pinconf_bias_disable_set(struct mtk_pinctrl *hw,
const struct mtk_pin_desc *desc)
{
@ -268,6 +269,81 @@ int mtk_pinconf_bias_get(struct mtk_pinctrl *hw,
return 0;
}
/* Revision 1 */
int mtk_pinconf_bias_disable_set_rev1(struct mtk_pinctrl *hw,
const struct mtk_pin_desc *desc)
{
int err;
err = mtk_hw_set_value(hw, desc->number, PINCTRL_PIN_REG_PULLEN,
MTK_DISABLE);
if (err)
return err;
return 0;
}
int mtk_pinconf_bias_disable_get_rev1(struct mtk_pinctrl *hw,
const struct mtk_pin_desc *desc, int *res)
{
int v, err;
err = mtk_hw_get_value(hw, desc->number, PINCTRL_PIN_REG_PULLEN, &v);
if (err)
return err;
if (v == MTK_ENABLE)
return -EINVAL;
*res = 1;
return 0;
}
int mtk_pinconf_bias_set_rev1(struct mtk_pinctrl *hw,
const struct mtk_pin_desc *desc, bool pullup)
{
int err, arg;
arg = pullup ? MTK_PULLUP : MTK_PULLDOWN;
err = mtk_hw_set_value(hw, desc->number, PINCTRL_PIN_REG_PULLEN,
MTK_ENABLE);
if (err)
return err;
err = mtk_hw_set_value(hw, desc->number, PINCTRL_PIN_REG_PULLSEL, arg);
if (err)
return err;
return 0;
}
int mtk_pinconf_bias_get_rev1(struct mtk_pinctrl *hw,
const struct mtk_pin_desc *desc, bool pullup,
int *res)
{
int err, v;
err = mtk_hw_get_value(hw, desc->number, PINCTRL_PIN_REG_PULLEN, &v);
if (err)
return err;
if (v == MTK_DISABLE)
return -EINVAL;
err = mtk_hw_get_value(hw, desc->number, PINCTRL_PIN_REG_PULLSEL, &v);
if (err)
return err;
if (pullup ^ (v == MTK_PULLUP))
return -EINVAL;
*res = 1;
return 0;
}
/* Revision 0 */
int mtk_pinconf_drive_set(struct mtk_pinctrl *hw,
const struct mtk_pin_desc *desc, u32 arg)

15
drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h
View File

@ -13,6 +13,8 @@
#define MTK_OUTPUT 1
#define MTK_DISABLE 0
#define MTK_ENABLE 1
#define MTK_PULLDOWN 0
#define MTK_PULLUP 1
#define EINT_NA -1
@ -55,6 +57,8 @@ enum {
PINCTRL_PIN_REG_R0,
PINCTRL_PIN_REG_R1,
PINCTRL_PIN_REG_IES,
PINCTRL_PIN_REG_PULLEN,
PINCTRL_PIN_REG_PULLSEL,
PINCTRL_PIN_REG_MAX,
};
@ -201,6 +205,17 @@ int mtk_pinconf_bias_get(struct mtk_pinctrl *hw,
const struct mtk_pin_desc *desc, bool pullup,
int *res);
int mtk_pinconf_bias_disable_set_rev1(struct mtk_pinctrl *hw,
const struct mtk_pin_desc *desc);
int mtk_pinconf_bias_disable_get_rev1(struct mtk_pinctrl *hw,
const struct mtk_pin_desc *desc,
int *res);
int mtk_pinconf_bias_set_rev1(struct mtk_pinctrl *hw,
const struct mtk_pin_desc *desc, bool pullup);
int mtk_pinconf_bias_get_rev1(struct mtk_pinctrl *hw,
const struct mtk_pin_desc *desc, bool pullup,
int *res);
int mtk_pinconf_drive_set(struct mtk_pinctrl *hw,
const struct mtk_pin_desc *desc, u32 arg);
int mtk_pinconf_drive_get(struct mtk_pinctrl *hw,