linux-kernel - [PATCH v4 02/25] firmware: xilinx: Remove eemi ops for get

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Date:   Thu,  9 Apr 2020 12:11:51 -0700
From:   Jolly Shah <jolly.shah@...inx.com>
To:     ard.biesheuvel@...aro.org, mingo@...nel.org,
        gregkh@...uxfoundation.org, matt@...eblueprint.co.uk,
        sudeep.holla@....com, hkallweit1@...il.com, keescook@...omium.org,
        dmitry.torokhov@...il.com, michal.simek@...inx.com
Cc:     rajanv@...inx.com, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, Rajan Vaja <rajan.vaja@...inx.com>,
        Jolly Shah <jolly.shah@...inx.com>
Subject: [PATCH v4 02/25] firmware: xilinx: Remove eemi ops for get_chipid

From: Rajan Vaja <rajan.vaja@...inx.com>

Use direct function call instead of eemi ops for get_chipid.

Signed-off-by: Rajan Vaja <rajan.vaja@...inx.com>
Signed-off-by: Jolly Shah <jolly.shah@...inx.com>
---
 drivers/firmware/xilinx/zynqmp.c     |  4 ++--
 drivers/nvmem/zynqmp_nvmem.c         | 11 +----------
 include/linux/firmware/xlnx-zynqmp.h |  6 +++++-
 3 files changed, 8 insertions(+), 13 deletions(-)

diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 36dab68..36ab9ac 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -247,7 +247,7 @@ EXPORT_SYMBOL_GPL(zynqmp_pm_get_api_version);
  * Return:      Returns the status of the operation and the idcode and version
  *              registers in @idcode and @version.
  */
-static int zynqmp_pm_get_chipid(u32 *idcode, u32 *version)
+int zynqmp_pm_get_chipid(u32 *idcode, u32 *version)
 {
 	u32 ret_payload[PAYLOAD_ARG_CNT];
 	int ret;
@@ -261,6 +261,7 @@ static int zynqmp_pm_get_chipid(u32 *idcode, u32 *version)
 
 	return ret;
 }
+EXPORT_SYMBOL_GPL(zynqmp_pm_get_chipid);
 
 /**
  * zynqmp_pm_get_trustzone_version() - Get secure trustzone firmware version
@@ -735,7 +736,6 @@ static int zynqmp_pm_aes_engine(const u64 address, u32 *out)
 }
 
 static const struct zynqmp_eemi_ops eemi_ops = {
-	.get_chipid = zynqmp_pm_get_chipid,
 	.query_data = zynqmp_pm_query_data,
 	.clock_enable = zynqmp_pm_clock_enable,
 	.clock_disable = zynqmp_pm_clock_disable,
diff --git a/drivers/nvmem/zynqmp_nvmem.c b/drivers/nvmem/zynqmp_nvmem.c
index 5893543..e28d7b1 100644
--- a/drivers/nvmem/zynqmp_nvmem.c
+++ b/drivers/nvmem/zynqmp_nvmem.c
@@ -16,8 +16,6 @@ struct zynqmp_nvmem_data {
 	struct nvmem_device *nvmem;
 };
 
-static const struct zynqmp_eemi_ops *eemi_ops;
-
 static int zynqmp_nvmem_read(void *context, unsigned int offset,
 			     void *val, size_t bytes)
 {
@@ -25,10 +23,7 @@ static int zynqmp_nvmem_read(void *context, unsigned int offset,
 	int idcode, version;
 	struct zynqmp_nvmem_data *priv = context;
 
-	if (!eemi_ops->get_chipid)
-		return -ENXIO;
-
-	ret = eemi_ops->get_chipid(&idcode, &version);
+	ret = zynqmp_pm_get_chipid(&idcode, &version);
 	if (ret < 0)
 		return ret;
 
@@ -61,10 +56,6 @@ static int zynqmp_nvmem_probe(struct platform_device *pdev)
 	if (!priv)
 		return -ENOMEM;
 
-	eemi_ops = zynqmp_pm_get_eemi_ops();
-	if (IS_ERR(eemi_ops))
-		return PTR_ERR(eemi_ops);
-
 	priv->dev = dev;
 	econfig.dev = dev;
 	econfig.reg_read = zynqmp_nvmem_read;
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index a21abcd..89f6a53 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -294,7 +294,6 @@ struct zynqmp_pm_query_data {
 };
 
 struct zynqmp_eemi_ops {
-	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);
 	int (*query_data)(struct zynqmp_pm_query_data qdata, u32 *out);
@@ -331,6 +330,7 @@ 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);
+int zynqmp_pm_get_chipid(u32 *idcode, u32 *version);
 #else
 static inline struct zynqmp_eemi_ops *zynqmp_pm_get_eemi_ops(void)
 {
@@ -340,6 +340,10 @@ static inline int zynqmp_pm_get_api_version(u32 *version)
 {
 	return -ENODEV;
 }
+static inline int zynqmp_pm_get_chipid(u32 *idcode, u32 *version)
+{
+	return -ENODEV;
+}
 #endif
 
 #endif /* __FIRMWARE_ZYNQMP_H__ */
-- 
2.7.4