[PATCH v11 08/11] firmware: xilinx: Add debugfs for query data API

Jolly Shah
2018-08-03T17:54:02Z

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