From 727293a8b11e64bc2038ed57a36250ada62144f1 Mon Sep 17 00:00:00 2001 From: Subbaraman Narayanamurthy Date: Mon, 13 Sep 2021 19:57:26 -0700 Subject: [PATCH] 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 Reviewed-by: Bjorn Andersson 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 --- drivers/pinctrl/qcom/pinctrl-spmi-gpio.c | 6 ++++++ 1 file changed, 6 insertions(+) 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;