1 files changed, 117 insertions, 2 deletions

diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 7eb9958662dd..15b138326ecc 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -2,7 +2,7 @@
 /*
  * Xilinx Zynq MPSoC Firmware layer
  *
- *  Copyright (C) 2014-2020 Xilinx, Inc.
+ *  Copyright (C) 2014-2021 Xilinx, Inc.
  *
  *  Michal Simek <michal.simek@xilinx.com>
  *  Davorin Mista <davorin.mista@aggios.com>
@@ -812,6 +812,120 @@ int zynqmp_pm_fpga_get_status(u32 *value)
 EXPORT_SYMBOL_GPL(zynqmp_pm_fpga_get_status);
 
 /**
+ * zynqmp_pm_pinctrl_request - Request Pin from firmware
+ * @pin: Pin number to request
+ *
+ * This function requests pin from firmware.
+ *
+ * Return: Returns status, either success or error+reason.
+ */
+int zynqmp_pm_pinctrl_request(const u32 pin)
+{
+	return zynqmp_pm_invoke_fn(PM_PINCTRL_REQUEST, pin, 0, 0, 0, NULL);
+}
+EXPORT_SYMBOL_GPL(zynqmp_pm_pinctrl_request);
+
+/**
+ * zynqmp_pm_pinctrl_release - Inform firmware that Pin control is released
+ * @pin: Pin number to release
+ *
+ * This function release pin from firmware.
+ *
+ * Return: Returns status, either success or error+reason.
+ */
+int zynqmp_pm_pinctrl_release(const u32 pin)
+{
+	return zynqmp_pm_invoke_fn(PM_PINCTRL_RELEASE, pin, 0, 0, 0, NULL);
+}
+EXPORT_SYMBOL_GPL(zynqmp_pm_pinctrl_release);
+
+/**
+ * zynqmp_pm_pinctrl_get_function - Read function id set for the given pin
+ * @pin: Pin number
+ * @id: Buffer to store function ID
+ *
+ * This function provides the function currently set for the given pin.
+ *
+ * Return: Returns status, either success or error+reason
+ */
+int zynqmp_pm_pinctrl_get_function(const u32 pin, u32 *id)
+{
+	u32 ret_payload[PAYLOAD_ARG_CNT];
+	int ret;
+
+	if (!id)
+		return -EINVAL;
+
+	ret = zynqmp_pm_invoke_fn(PM_PINCTRL_GET_FUNCTION, pin, 0,
+				  0, 0, ret_payload);
+	*id = ret_payload[1];
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(zynqmp_pm_pinctrl_get_function);
+
+/**
+ * zynqmp_pm_pinctrl_set_function - Set requested function for the pin
+ * @pin: Pin number
+ * @id: Function ID to set
+ *
+ * This function sets requested function for the given pin.
+ *
+ * Return: Returns status, either success or error+reason.
+ */
+int zynqmp_pm_pinctrl_set_function(const u32 pin, const u32 id)
+{
+	return zynqmp_pm_invoke_fn(PM_PINCTRL_SET_FUNCTION, pin, id,
+				   0, 0, NULL);
+}
+EXPORT_SYMBOL_GPL(zynqmp_pm_pinctrl_set_function);
+
+/**
+ * zynqmp_pm_pinctrl_get_config - Get configuration parameter for the pin
+ * @pin: Pin number
+ * @param: Parameter to get
+ * @value: Buffer to store parameter value
+ *
+ * This function gets requested configuration parameter for the given pin.
+ *
+ * Return: Returns status, either success or error+reason.
+ */
+int zynqmp_pm_pinctrl_get_config(const u32 pin, const u32 param,
+				 u32 *value)
+{
+	u32 ret_payload[PAYLOAD_ARG_CNT];
+	int ret;
+
+	if (!value)
+		return -EINVAL;
+
+	ret = zynqmp_pm_invoke_fn(PM_PINCTRL_CONFIG_PARAM_GET, pin, param,
+				  0, 0, ret_payload);
+	*value = ret_payload[1];
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(zynqmp_pm_pinctrl_get_config);
+
+/**
+ * zynqmp_pm_pinctrl_set_config - Set configuration parameter for the pin
+ * @pin: Pin number
+ * @param: Parameter to set
+ * @value: Parameter value to set
+ *
+ * This function sets requested configuration parameter for the given pin.
+ *
+ * Return: Returns status, either success or error+reason.
+ */
+int zynqmp_pm_pinctrl_set_config(const u32 pin, const u32 param,
+				 u32 value)
+{
+	return zynqmp_pm_invoke_fn(PM_PINCTRL_CONFIG_PARAM_SET, pin,
+				   param, value, 0, NULL);
+}
+EXPORT_SYMBOL_GPL(zynqmp_pm_pinctrl_set_config);
+
+/**
  * zynqmp_pm_init_finalize() - PM call to inform firmware that the caller
  *			       master has initialized its own power management
  *
@@ -1280,12 +1394,13 @@ static int zynqmp_firmware_probe(struct platform_device *pdev)
 static int zynqmp_firmware_remove(struct platform_device *pdev)
 {
 	struct pm_api_feature_data *feature_data;
+	struct hlist_node *tmp;
 	int i;
 
 	mfd_remove_devices(&pdev->dev);
 	zynqmp_pm_api_debugfs_exit();
 
-	hash_for_each(pm_api_features_map, i, feature_data, hentry) {
+	hash_for_each_safe(pm_api_features_map, i, tmp, feature_data, hentry) {
 		hash_del(&feature_data->hentry);
 		kfree(feature_data);
 	}