firmware: xilinx: Add debugfs for query data API

Add debugfs file to query platform specific data from firmware
using debugfs interface.

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-debug.c b/drivers/firmware/xilinx/zynqmp-debug.c
index d65cfd2..2771df6 100644 (file)
--- a/drivers/firmware/xilinx/zynqmp-debug.c
+++ b/drivers/firmware/xilinx/zynqmp-debug.c
@@ -32,6 +32,7 @@ static char debugfs_buf[PAGE_SIZE];
 #define PM_API(id)              {id, #id, strlen(#id)}
 static struct pm_api_info pm_api_list[] = {
        PM_API(PM_GET_API_VERSION),
+       PM_API(PM_QUERY_DATA),
 };
 
 struct dentry *firmware_debugfs_root;
@@ -87,6 +88,7 @@ static int process_api_request(u32 pm_id, u64 *pm_api_arg, u32 *pm_api_ret)
        const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops();
        u32 pm_api_version;
        int ret;
+       struct zynqmp_pm_query_data qdata = {0};
 
        if (!eemi_ops)
                return -ENXIO;
@@ -97,6 +99,32 @@ static int process_api_request(u32 pm_id, u64 *pm_api_arg, u32 *pm_api_ret)
                sprintf(debugfs_buf, "PM-API Version = %d.%d\n",
                        pm_api_version >> 16, pm_api_version & 0xffff);
                break;
+       case PM_QUERY_DATA:
+               qdata.qid = pm_api_arg[0];
+               qdata.arg1 = pm_api_arg[1];
+               qdata.arg2 = pm_api_arg[2];
+               qdata.arg3 = pm_api_arg[3];
+
+               ret = eemi_ops->query_data(qdata, pm_api_ret);
+               if (ret)
+                       break;
+
+               switch (qdata.qid) {
+               case PM_QID_CLOCK_GET_NAME:
+                       sprintf(debugfs_buf, "Clock name = %s\n",
+                               (char *)pm_api_ret);
+                       break;
+               case PM_QID_CLOCK_GET_FIXEDFACTOR_PARAMS:
+                       sprintf(debugfs_buf, "Multiplier = %d, Divider = %d\n",
+                               pm_api_ret[1], pm_api_ret[2]);
+                       break;
+               default:
+                       sprintf(debugfs_buf,
+                               "data[0] = 0x%08x\ndata[1] = 0x%08x\n data[2] = 0x%08x\ndata[3] = 0x%08x\n",
+                               pm_api_ret[0], pm_api_ret[1],
+                               pm_api_ret[2], pm_api_ret[3]);
+               }
+               break;
        default:
                sprintf(debugfs_buf, "Unsupported PM-API request\n");
                ret = -EINVAL;