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Subject[PATCH v12 6/6] firmware: xilinx: Add debugfs for query data API
Date
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 | 28 ++++++++++++++++++++++++++++
1 file changed, 28 insertions(+)

diff --git a/drivers/firmware/xilinx/zynqmp-debug.c b/drivers/firmware/xilinx/zynqmp-debug.c
index d65cfd2..2771df6 100644
--- 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;
--
2.7.4
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