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From:   Jolly Shah <jolly.shah@xilinx.com>
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CC:     <rajanv@xilinx.com>, <linux-arm-kernel@lists.infradead.org>,
        <linux-kernel@vger.kernel.org>, <devicetree@vger.kernel.org>,
        Jolly Shah <jollys@xilinx.com>
Subject: [PATCH v10 08/10] firmware: xilinx: Add debugfs for query data API
Date:   Tue, 17 Jul 2018 12:59:05 -0700
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From: Rajan Vaja <rajanv@xilinx.com>

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>
---
 drivers/firmware/xilinx/zynqmp-debug.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/drivers/firmware/xilinx/zynqmp-debug.c b/drivers/firmware/xilinx/zynqmp-debug.c
index fc11db9..4532bd0 100644
--- a/drivers/firmware/xilinx/zynqmp-debug.c
+++ b/drivers/firmware/xilinx/zynqmp-debug.c
@@ -33,6 +33,7 @@ static char debugfs_buf[PAGE_SIZE];
 static struct pm_api_info pm_api_list[] = {
 	PM_API(PM_GET_API_VERSION),
 	PM_API(PM_IOCTL),
+	PM_API(PM_QUERY_DATA),
 };
 
 /**
@@ -105,6 +106,32 @@ static int process_api_request(u32 pm_id, u64 *pm_api_arg, u32 *pm_api_ret)
 			sprintf(debugfs_buf, "IOCTL return value: %u\n",
 				pm_api_ret[1]);
 		break;
+	case PM_QUERY_DATA:
+	{
+		struct zynqmp_pm_query_data qdata = {0};
+
+		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;
+
+		if (qdata.qid == PM_QID_CLOCK_GET_NAME)
+			sprintf(debugfs_buf, "Clock name = %s\n",
+				(char *)pm_api_ret);
+		else if (qdata.qid == PM_QID_CLOCK_GET_FIXEDFACTOR_PARAMS)
+			sprintf(debugfs_buf, "Multiplier = %d, Divider = %d\n",
+				pm_api_ret[1], pm_api_ret[2]);
+		else
+			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;
-- 
2.7.4