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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>
This commit is contained in:
Rajan Vaja 2018-09-12 12:38:40 -07:00 committed by Michal Simek
parent b321725257
commit e60f02ddb4
1 changed files with 28 additions and 0 deletions
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28
drivers/firmware/xilinx/zynqmp-debug.c
View File

@ -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;