Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Received-SPF: Pass (protection.outlook.com: domain of xilinx.com designates
 149.199.62.198 as permitted sender) receiver=protection.outlook.com;
 client-ip=149.199.62.198; helo=xsj-pvapexch01.xlnx.xilinx.com;
Envelope-to: gregkh@linuxfoundation.org,
 zou_wei@huawei.com,
 linux-kernel@vger.kernel.org,
 linux-arm-kernel@lists.infradead.org
From:   Abhyuday Godhasara <abhyuday.godhasara@xilinx.com>
To:     <gregkh@linuxfoundation.org>
CC:     <michal.simek@xilinx.com>, <abhyuday.godhasara@xilinx.com>,
        <rajan.vaja@xilinx.com>, <manish.narani@xilinx.com>,
        <zou_wei@huawei.com>, <lakshmi.sai.krishna.potthuri@xilinx.com>,
        <wendy.liang@xilinx.com>, <jliang@xilinx.com>,
        <linux-kernel@vger.kernel.org>,
        <linux-arm-kernel@lists.infradead.org>
Subject: [PATCH v7 3/6] firmware: xilinx: export the feature check of zynqmp firmware
Date:   Mon, 25 Oct 2021 21:25:22 -0700
Message-ID: <20211026042525.26612-4-abhyuday.godhasara@xilinx.com>
In-Reply-To: <20211025082350.10881-1-abhyuday.godhasara@xilinx.com>
References: <20211025082350.10881-1-abhyuday.godhasara@xilinx.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Content-Type: text/plain
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 26 Oct 2021 04:25:33.5070
 (UTC)
X-MS-Exchange-CrossTenant-Network-Message-Id: 4e4e3cba-1d91-46b8-1c59-08d99838a6f0
X-MS-Exchange-CrossTenant-Id: 657af505-d5df-48d0-8300-c31994686c5c
X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=657af505-d5df-48d0-8300-c31994686c5c;Ip=[149.199.62.198];Helo=[xsj-pvapexch01.xlnx.xilinx.com]
X-MS-Exchange-CrossTenant-AuthSource: DM3NAM02FT025.eop-nam02.prod.protection.outlook.com
X-MS-Exchange-CrossTenant-AuthAs: Anonymous
X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem
X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR02MB2652
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

Export the zynqmp_pm_feature(), so it can be use by other as to get API
version available in firmware.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Abhyuday Godhasara <abhyuday.godhasara@xilinx.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
---
Changes in v7:
- None

Changes in v6:
- None

Changes in v5:
- None

Changes in v4:
- None

Changes in v3:
- None

Changes in v2:
- None
---
 drivers/firmware/xilinx/zynqmp.c     | 3 ++-
 include/linux/firmware/xlnx-zynqmp.h | 6 ++++++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 6e653e9cea2d..e2c55f48b93d 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -153,7 +153,7 @@ static noinline int do_fw_call_hvc(u64 arg0, u64 arg1, u64 arg2,
  *
  * Return: Returns status, either success or error+reason
  */
-static int zynqmp_pm_feature(u32 api_id)
+int zynqmp_pm_feature(const u32 api_id)
 {
 	int ret;
 	u32 ret_payload[PAYLOAD_ARG_CNT];
@@ -190,6 +190,7 @@ static int zynqmp_pm_feature(u32 api_id)
 
 	return ret;
 }
+EXPORT_SYMBOL_GPL(zynqmp_pm_feature);
 
 /**
  * zynqmp_pm_invoke_fn() - Invoke the system-level platform management layer
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index bfd87ae35b2c..591bdbb4290e 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -433,6 +433,7 @@ int zynqmp_pm_pinctrl_set_config(const u32 pin, const u32 param,
 int zynqmp_pm_load_pdi(const u32 src, const u64 address);
 int zynqmp_pm_register_notifier(const u32 node, const u32 event,
 				const u32 wake, const u32 enable);
+int zynqmp_pm_feature(const u32 api_id);
 #else
 static inline int zynqmp_pm_get_api_version(u32 *version)
 {
@@ -655,6 +656,11 @@ static inline int zynqmp_pm_register_notifier(const u32 node, const u32 event,
 {
 	return -ENODEV;
 }
+
+static inline int zynqmp_pm_feature(const u32 api_id)
+{
+	return -ENODEV;
+}
 #endif
 
 #endif /* __FIRMWARE_ZYNQMP_H__ */
-- 
2.32.0.93.g670b81a