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 <rajanv@xilinx.com>
Signed-off-by: Jolly Shah <jollys@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 5bf64acc7b449211ec84dd2b61d97a249b0dd851..2a333c04955b823122eab4952d58a647f3326499 100644 (file)
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/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,
 };
 
 /**

diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index cb63bedf3dcfaeae4f5ee90fcf2df7610f1b21a0..287f42caa623f5303e9cf6b0f8ed424736401414 100644 (file)
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/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)