firmware: xilinx: Remove eemi ops for get_api_version

Use direct function calls instead of using eemi ops. So remove
eemi ops for get_api_version and use direct function call.
Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
Link: https://lore.kernel.org/r/1587761887-4279-2-git-send-email-jolly.shah@xilinx.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/firmware/xilinx/zynqmp-debug.c

@@ -92,7 +92,7 @@ static int process_api_request(u32 pm_id, u64 *pm_api_arg, u32 *pm_api_ret)
 
 	switch (pm_id) {
 	case PM_GET_API_VERSION:
-		ret = eemi_ops->get_api_version(&pm_api_version);
+		ret = zynqmp_pm_get_api_version(&pm_api_version);
 		sprintf(debugfs_buf, "PM-API Version = %d.%d\n",
 			pm_api_version >> 16, pm_api_version & 0xffff);
 		break;

drivers/firmware/xilinx/zynqmp.c

@@ -219,7 +219,7 @@ static u32 pm_tz_version;
  *
  * Return: Returns status, either success or error+reason
  */
-static int zynqmp_pm_get_api_version(u32 *version)
+int zynqmp_pm_get_api_version(u32 *version)
 {
 	u32 ret_payload[PAYLOAD_ARG_CNT];
 	int ret;
@@ -237,6 +237,7 @@ static int zynqmp_pm_get_api_version(u32 *version)
 
 	return ret;
 }
+EXPORT_SYMBOL_GPL(zynqmp_pm_get_api_version);
 
 /**
  * zynqmp_pm_get_chipid - Get silicon ID registers
@@ -734,7 +735,6 @@ static int zynqmp_pm_aes_engine(const u64 address, u32 *out)
 }
 
 static const struct zynqmp_eemi_ops eemi_ops = {
-	.get_api_version = zynqmp_pm_get_api_version,
 	.get_chipid = zynqmp_pm_get_chipid,
 	.query_data = zynqmp_pm_query_data,
 	.clock_enable = zynqmp_pm_clock_enable,

drivers/soc/xilinx/zynqmp_power.c

@@ -186,11 +186,11 @@ static int zynqmp_pm_probe(struct platform_device *pdev)
 	if (IS_ERR(eemi_ops))
 		return PTR_ERR(eemi_ops);
 
-	if (!eemi_ops->get_api_version || !eemi_ops->init_finalize)
+	if (!eemi_ops->init_finalize)
 		return -ENXIO;
 
 	eemi_ops->init_finalize();
-	eemi_ops->get_api_version(&pm_api_version);
+	zynqmp_pm_get_api_version(&pm_api_version);
 
 	/* Check PM API version number */
 	if (pm_api_version < ZYNQMP_PM_VERSION)

include/linux/firmware/xlnx-zynqmp.h

@@ -294,7 +294,6 @@ struct zynqmp_pm_query_data {
 };
 
 struct zynqmp_eemi_ops {
-	int (*get_api_version)(u32 *version);
 	int (*get_chipid)(u32 *idcode, u32 *version);
 	int (*fpga_load)(const u64 address, const u32 size, const u32 flags);
 	int (*fpga_get_status)(u32 *value);
@@ -331,11 +330,16 @@ int zynqmp_pm_invoke_fn(u32 pm_api_id, u32 arg0, u32 arg1,
 
 #if IS_REACHABLE(CONFIG_ZYNQMP_FIRMWARE)
 const struct zynqmp_eemi_ops *zynqmp_pm_get_eemi_ops(void);
+int zynqmp_pm_get_api_version(u32 *version);
 #else
 static inline struct zynqmp_eemi_ops *zynqmp_pm_get_eemi_ops(void)
 {
 	return ERR_PTR(-ENODEV);
 }
+static inline int zynqmp_pm_get_api_version(u32 *version)
+{
+	return -ENODEV;
+}
 #endif
 
 #endif /* __FIRMWARE_ZYNQMP_H__ */