firmware: xilinx: Add query data API

Add ZynqMP firmware query data API to query platform
specific information(clocks, pins) from firmware.

Signed-off-by: Rajan Vaja <[email protected]>
Signed-off-by: Jolly Shah <[email protected]>
Signed-off-by: Michal Simek <[email protected]>

Author: rajanv-xilinx

drivers/firmware/xilinx/zynqmp.c

@@ -241,8 +241,22 @@ static int get_set_conduit_method(struct device_node *np)
 	return 0;
 }
 
+/**
+ * zynqmp_pm_query_data() - Get query data from firmware
+ * @qdata:	Variable to the zynqmp_pm_query_data structure
+ * @out:	Returned output value
+ *
+ * Return: Returns status, either success or error+reason
+ */
+static int zynqmp_pm_query_data(struct zynqmp_pm_query_data qdata, u32 *out)
+{
+	return zynqmp_pm_invoke_fn(PM_QUERY_DATA, qdata.qid, qdata.arg1,
+				   qdata.arg2, qdata.arg3, out);
+}
+
 static const struct zynqmp_eemi_ops eemi_ops = {
 	.get_api_version = zynqmp_pm_get_api_version,
+	.query_data = zynqmp_pm_query_data,
 };
 
 /**

include/linux/firmware/xlnx-zynqmp.h

@@ -34,6 +34,7 @@
 
 enum pm_api_id {
 	PM_GET_API_VERSION = 1,
+	PM_QUERY_DATA = 35,
 };
 
 /* PMU-FW return status codes */
@@ -47,8 +48,27 @@ enum pm_ret_status {
 	XST_PM_ABORT_SUSPEND,
 };
 
+enum pm_query_id {
+	PM_QID_INVALID,
+};
+
+/**
+ * struct zynqmp_pm_query_data - PM query data
+ * @qid:	query ID
+ * @arg1:	Argument 1 of query data
+ * @arg2:	Argument 2 of query data
+ * @arg3:	Argument 3 of query data
+ */
+struct zynqmp_pm_query_data {
+	u32 qid;
+	u32 arg1;
+	u32 arg2;
+	u32 arg3;
+};
+
 struct zynqmp_eemi_ops {
 	int (*get_api_version)(u32 *version);
+	int (*query_data)(struct zynqmp_pm_query_data qdata, u32 *out);
 };
 
 #if IS_REACHABLE(CONFIG_ARCH_ZYNQMP)