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| author | Baolin Wang <baolin.wang@linaro.org> | 2019-10-09 07:52:45 +0300 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2019-10-16 16:56:19 +0300 |
| commit | f8b05fe41b72adc8bc3ce164d6a2c7ac55f44724 (patch) | |
| tree | ac529c8b00455d65d4d97f7dfdb281ff15773723 | |
| parent | f086d1fe06cf3c5be928a6c2f8d1c54003f91d46 (diff) | |
| download | linux-f8b05fe41b72adc8bc3ce164d6a2c7ac55f44724.tar.xz | |
pinctrl: sprd: Add PIN_CONFIG_BIAS_DISABLE configuration support
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>
| -rw-r--r-- | drivers/pinctrl/sprd/pinctrl-sprd.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/pinctrl/sprd/pinctrl-sprd.c b/drivers/pinctrl/sprd/pinctrl-sprd.c index 7b95bf5a82a9..8869843d34e3 100644 --- a/drivers/pinctrl/sprd/pinctrl-sprd.c +++ b/drivers/pinctrl/sprd/pinctrl-sprd.c @@ -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: |