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pinctrl: sprd: Add PIN_CONFIG_BIAS_DISABLE configuration support

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Add PIN_CONFIG_BIAS_DISABLE configuration support for Spreadtrum pin
controller.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Link: https://lore.kernel.org/r/66d373ddee61e8be2fcef49aac5e80bd58f14915.1570596606.git.baolin.wang@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Baolin Wang 2019-10-09 12:52:45 +08:00 committed by Linus Walleij
parent f086d1fe06
commit f8b05fe41b
1 changed files with 17 additions and 0 deletions
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17
drivers/pinctrl/sprd/pinctrl-sprd.c
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@ -484,6 +484,13 @@ static int sprd_pinconf_get(struct pinctrl_dev *pctldev, unsigned int pin_id,
SLEEP_PULL_UP_MASK) << 16;
arg |= (reg >> PULL_UP_SHIFT) & PULL_UP_MASK;
break;
case PIN_CONFIG_BIAS_DISABLE:
if ((reg & (SLEEP_PULL_DOWN | SLEEP_PULL_UP)) ||
(reg & (PULL_DOWN | PULL_UP_4_7K | PULL_UP_20K)))
return -EINVAL;
arg = 1;
break;
case PIN_CONFIG_SLEEP_HARDWARE_STATE:
arg = 0;
break;
@ -674,6 +681,16 @@ static int sprd_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin_id,
shift = PULL_UP_SHIFT;
}
break;
case PIN_CONFIG_BIAS_DISABLE:
if (is_sleep_config == true) {
val = shift = 0;
mask = SLEEP_PULL_DOWN | SLEEP_PULL_UP;
} else {
val = shift = 0;
mask = PULL_DOWN | PULL_UP_20K |
PULL_UP_4_7K;
}
break;
case PIN_CONFIG_SLEEP_HARDWARE_STATE:
continue;
default: