2022-06-17 11:02:51

by Sai Krishna Potthuri

[permalink] [raw]
Subject: [PATCH 3/4] pinctrl: pinctrl-zynqmp: Add support for output-enable and bias-high-impedance

Add support to handle 'output-enable' and 'bias-high-impedance'
configurations. As part of the output-enable configuration, ZynqMP pinctrl
driver takes care of removing the pins from tri-state.

Signed-off-by: Sai Krishna Potthuri <[email protected]>
---
drivers/pinctrl/pinctrl-zynqmp.c | 9 +++++++++
1 file changed, 9 insertions(+)

diff --git a/drivers/pinctrl/pinctrl-zynqmp.c b/drivers/pinctrl/pinctrl-zynqmp.c
index e14012209992..b25e9e76fbf8 100644
--- a/drivers/pinctrl/pinctrl-zynqmp.c
+++ b/drivers/pinctrl/pinctrl-zynqmp.c
@@ -410,6 +410,10 @@ static int zynqmp_pinconf_cfg_set(struct pinctrl_dev *pctldev,

break;
case PIN_CONFIG_BIAS_HIGH_IMPEDANCE:
+ param = PM_PINCTRL_CONFIG_TRI_STATE;
+ arg = PM_PINCTRL_TRI_STATE_ENABLE;
+ ret = zynqmp_pm_pinctrl_set_config(pin, param, arg);
+ break;
case PIN_CONFIG_MODE_LOW_POWER:
/*
* These cases are mentioned in dts but configurable
@@ -418,6 +422,11 @@ static int zynqmp_pinconf_cfg_set(struct pinctrl_dev *pctldev,
*/
ret = 0;
break;
+ case PIN_CONFIG_OUTPUT_ENABLE:
+ param = PM_PINCTRL_CONFIG_TRI_STATE;
+ arg = PM_PINCTRL_TRI_STATE_DISABLE;
+ ret = zynqmp_pm_pinctrl_set_config(pin, param, arg);
+ break;
default:
dev_warn(pctldev->dev,
"unsupported configuration parameter '%u'\n",
--
2.17.1