linux-kernel - [PATCH v2] firmware: xilinx: Remove zynqmp_pm_get_eemi_ops() in IS_REACHABLE(CONFIG_ZYNQMP

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Message-Id: <20210211232312.2082334-1-iwamatsu@nigauri.org>
Date:   Fri, 12 Feb 2021 08:23:12 +0900
From:   Nobuhiro Iwamatsu <iwamatsu@...auri.org>
To:     michal.simek@...inx.com
Cc:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Nobuhiro Iwamatsu <iwamatsu@...auri.org>
Subject: [PATCH v2] firmware: xilinx: Remove zynqmp_pm_get_eemi_ops() in IS_REACHABLE(CONFIG_ZYNQMP_FIRMWARE)

zynqmp_pm_get_eemi_ops() was removed in commit 4db8180ffe7c: "Firmware: xilinx:
Remove eemi ops for fpga related APIs", but not in IS_REACHABLE(CONFIG_ZYNQMP_FIRMWARE).
Any driver who want to communicate with PMC using EEMI APIs use the functions provided
for each function.
This removed zynqmp_pm_get_eemi_ops() in IS_REACHABLE(CONFIG_ZYNQMP_FIRMWARE), and also
modify the documentation for this driver.

Fixes: 4db8180ffe7c ("firmware: xilinx: Remove eemi ops for fpga related APIs")
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@...auri.org>
---
 v2: Added the comment pointed out by Michal. 

 Documentation/driver-api/xilinx/eemi.rst | 27 +-----------------------
 include/linux/firmware/xlnx-zynqmp.h     |  5 -----
 2 files changed, 1 insertion(+), 31 deletions(-)

diff --git a/Documentation/driver-api/xilinx/eemi.rst b/Documentation/driver-api/xilinx/eemi.rst
index 9dcbc6f18d75df..53416d25d309a8 100644
--- a/Documentation/driver-api/xilinx/eemi.rst
+++ b/Documentation/driver-api/xilinx/eemi.rst
@@ -19,32 +19,7 @@ device to issue or respond to power management requests.
 EEMI ops is a structure containing all eemi APIs supported by Zynq MPSoC.
 The zynqmp-firmware driver maintain all EEMI APIs in zynqmp_eemi_ops
 structure. Any driver who want to communicate with PMC using EEMI APIs
-can call zynqmp_pm_get_eemi_ops().
-
-Example of EEMI ops::
-
-	/* zynqmp-firmware driver maintain all EEMI APIs */
-	struct zynqmp_eemi_ops {
-		int (*get_api_version)(u32 *version);
-		int (*query_data)(struct zynqmp_pm_query_data qdata, u32 *out);
-	};
-
-	static const struct zynqmp_eemi_ops eemi_ops = {
-		.get_api_version = zynqmp_pm_get_api_version,
-		.query_data = zynqmp_pm_query_data,
-	};
-
-Example of EEMI ops usage::
-
-	static const struct zynqmp_eemi_ops *eemi_ops;
-	u32 ret_payload[PAYLOAD_ARG_CNT];
-	int ret;
-
-	eemi_ops = zynqmp_pm_get_eemi_ops();
-	if (IS_ERR(eemi_ops))
-		return PTR_ERR(eemi_ops);
-
-	ret = eemi_ops->query_data(qdata, ret_payload);
+use the functions provided for each function.
 
 IOCTL
 ------
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index 2a0da841c942f6..4ef77deaf7918c 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -355,11 +355,6 @@ int zynqmp_pm_read_pggs(u32 index, u32 *value);
 int zynqmp_pm_system_shutdown(const u32 type, const u32 subtype);
 int zynqmp_pm_set_boot_health_status(u32 value);
 #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;
-- 
2.30.0