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authorSubbaraman Narayanamurthy <quic_subbaram@quicinc.com>2021-09-13 19:57:26 -0700
committerLinus Walleij <linus.walleij@linaro.org>2021-10-03 00:43:09 +0200
commit727293a8b11e64bc2038ed57a36250ada62144f1 (patch)
tree4633d170d41c1664ef3d7778d8cc67f17c52d603 /drivers/pinctrl/qcom/pinctrl-spmi-gpio.c
parent8c82646196c42e2ca49dc275242105a54982c290 (diff)
downloadlinux-727293a8b11e64bc2038ed57a36250ada62144f1.tar.bz2
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/qcom/pinctrl-spmi-gpio.c')
-rw-r--r--drivers/pinctrl/qcom/pinctrl-spmi-gpio.c6
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;