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| author | Subbaraman Narayanamurthy <quic_subbaram@quicinc.com> | 2021-09-14 04:57:26 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2021-10-03 00:43:09 +0200 |
| commit | 727293a8b11e64bc2038ed57a36250ada62144f1 (patch) | |
| tree | 4633d170d41c1664ef3d7778d8cc67f17c52d603 /drivers/pinctrl | |
| parent | dt-bindings: pinctrl: qcom-pmic-gpio: Add output-{enable,disable} properties (diff) | |
| download | linux-727293a8b11e64bc2038ed57a36250ada62144f1.tar.xz linux-727293a8b11e64bc2038ed57a36250ada62144f1.zip | |
pinctrl: qcom: spmi-gpio: add support to enable/disable output
Currently, if the GPIO is configured as output in the bootloader
and user changes the mode to input in HLOS, it would end up
getting configured as input/output. Functionally, this is fine;
however, there may be some requirements where the output needs
to be disabled so that it can be used only for input.
Add support to enable/disable output mode through "output-enable"
or "output-disable" pinctrl properties.
Signed-off-by: Subbaraman Narayanamurthy <quic_subbaram@quicinc.com>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/1631588246-4811-3-git-send-email-quic_subbaram@quicinc.com
[Drop copyright change which is already upstrean in -rcN]
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl')
| -rw-r--r-- | drivers/pinctrl/qcom/pinctrl-spmi-gpio.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/pinctrl/qcom/pinctrl-spmi-gpio.c b/drivers/pinctrl/qcom/pinctrl-spmi-gpio.c index 98bf0e2a2a8d..a840b9b230d5 100644 --- a/drivers/pinctrl/qcom/pinctrl-spmi-gpio.c +++ b/drivers/pinctrl/qcom/pinctrl-spmi-gpio.c @@ -424,6 +424,9 @@ static int pmic_gpio_config_get(struct pinctrl_dev *pctldev, return -EINVAL; arg = 1; break; + case PIN_CONFIG_OUTPUT_ENABLE: + arg = pad->output_enabled; + break; case PIN_CONFIG_OUTPUT: arg = pad->out_value; break; @@ -503,6 +506,9 @@ static int pmic_gpio_config_set(struct pinctrl_dev *pctldev, unsigned int pin, case PIN_CONFIG_INPUT_ENABLE: pad->input_enabled = arg ? true : false; break; + case PIN_CONFIG_OUTPUT_ENABLE: + pad->output_enabled = arg ? true : false; + break; case PIN_CONFIG_OUTPUT: pad->output_enabled = true; pad->out_value = arg; |