From: Rajan Vaja <rajanv@xxxxxxxxxx>
Add ZynqMP firmware query data API to query platform
specific information(clocks, pins) from firmware.
Signed-off-by: Rajan Vaja <rajanv@xxxxxxxxxx>
Signed-off-by: Jolly Shah <jollys@xxxxxxxxxx>
---
drivers/firmware/xilinx/zynqmp.c | 14 ++++++++++++++
include/linux/firmware/xlnx-zynqmp.h | 20 ++++++++++++++++++++
2 files changed, 34 insertions(+)
diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 44b43fa..ef09c44 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -258,9 +258,23 @@ static int zynqmp_pm_ioctl(u32 node_id, u32 ioctl_id, u32 arg1, u32 arg2,
arg1, arg2, out);
}
+/**
+ * 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,
.ioctl = zynqmp_pm_ioctl,
+ .query_data = zynqmp_pm_query_data,
};
/**
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index 2eec6e7..6f05f07 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -35,6 +35,7 @@
enum pm_api_id {
PM_GET_API_VERSION = 1,
PM_IOCTL = 34,
+ PM_QUERY_DATA,
};
/* PMU-FW return status codes */
@@ -48,9 +49,28 @@ enum pm_ret_status {
XST_PM_ABORT_SUSPEND,
};
+enum pm_query_id {
+ PM_QID_INVALID,
+};
+
+/**
+ * zynqmp_pm_query_data - PM query data structure
+ * @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 (*ioctl)(u32 node_id, u32 ioctl_id, u32 arg1, u32 arg2, u32 *out);
+ int (*query_data)(struct zynqmp_pm_query_data qdata, u32 *out);
};
#if IS_REACHABLE(CONFIG_ARCH_ZYNQMP)
--
2.7.4
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