[PATCH 2/4] firmware: xilinx: add new function for do_feature_check_call

Ronak Jain
2022-04-06T13:44:08Z

Add new function for sending feature check request to firmware and
call it from zynqmp_pm_feature().

Signed-off-by: Ronak Jain <ronak.jain@xilinx.com>
---
drivers/firmware/xilinx/zynqmp.c | 27 ++++++++++++++++++---------
1 file changed, 18 insertions(+), 9 deletions(-)

diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 41ca41697790..d27a3b20227b 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -175,6 +175,23 @@ static noinline int do_fw_call_hvc(u64 arg0, u64 arg1, u64 arg2,
return zynqmp_pm_ret_code((enum pm_ret_status)res.a0);
}

+static int do_feature_check_call(const u32 api_id, u32 *ret_payload)
+{
+ int ret;
+ u64 smc_arg[2];
+
+ smc_arg[0] = PM_SIP_SVC | PM_FEATURE_CHECK;
+ smc_arg[1] = api_id;
+
+ ret = do_fw_call(smc_arg[0], smc_arg[1], 0, ret_payload);
+ if (ret)
+ ret = -EOPNOTSUPP;
+ else
+ ret = ret_payload[1];
+
+ return ret;
+}
+
/**
* zynqmp_pm_feature() - Check whether given feature is supported or not and
* store supported IOCTL/QUERY ID mask
@@ -186,7 +203,6 @@ int zynqmp_pm_feature(const u32 api_id)
{
int ret;
u32 ret_payload[PAYLOAD_ARG_CNT];
- u64 smc_arg[2];
struct pm_api_feature_data *feature_data;

if (!feature_check_enabled)
@@ -205,14 +221,7 @@ int zynqmp_pm_feature(const u32 api_id)
return -ENOMEM;

feature_data->pm_api_id = api_id;
- smc_arg[0] = PM_SIP_SVC | PM_FEATURE_CHECK;
- smc_arg[1] = api_id;
-
- ret = do_fw_call(smc_arg[0], smc_arg[1], 0, ret_payload);
- if (ret)
- ret = -EOPNOTSUPP;
- else
- ret = ret_payload[1];
+ ret = do_feature_check_call(api_id, ret_payload);

feature_data->feature_status = ret;
hash_add(pm_api_features_map, &feature_data->hentry, api_id);
--
2.7.4