linux-kernel - [PATCH] firmware: imx: add dummy functions

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Message-Id: <1600770269-30619-1-git-send-email-peng.fan@nxp.com>
Date:   Tue, 22 Sep 2020 18:24:29 +0800
From:   peng.fan@....com
To:     shawnguo@...nel.org, s.hauer@...gutronix.de, festevam@...il.com,
        abel.vesa@....com
Cc:     kernel@...gutronix.de, linux-imx@....com, Anson.Huang@....com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        aisheng.dong@....com, Peng Fan <peng.fan@....com>
Subject: [PATCH] firmware: imx: add dummy functions

From: Peng Fan <peng.fan@....com>

add dummy functions to avoid build failure when header files
are included, but drivers are not built.

Signed-off-by: Peng Fan <peng.fan@....com>
---

V1: Seems this patch was missed. https://patchwork.kernel.org/cover/11395245/
    Rebased on linux-next.

 include/linux/firmware/imx/ipc.h      | 13 +++++++++++++
 include/linux/firmware/imx/sci.h      | 27 +++++++++++++++++++++++++++
 include/linux/firmware/imx/svc/misc.h | 19 +++++++++++++++++++
 3 files changed, 59 insertions(+)

diff --git a/include/linux/firmware/imx/ipc.h b/include/linux/firmware/imx/ipc.h
index 891057434858..0b4643571625 100644
--- a/include/linux/firmware/imx/ipc.h
+++ b/include/linux/firmware/imx/ipc.h
@@ -34,6 +34,7 @@ struct imx_sc_rpc_msg {
 	uint8_t func;
 };
 
+#ifdef CONFIG_IMX_SCU
 /*
  * This is an function to send an RPC message over an IPC channel.
  * It is called by client-side SCFW API function shims.
@@ -55,4 +56,16 @@ int imx_scu_call_rpc(struct imx_sc_ipc *ipc, void *msg, bool have_resp);
  * @return Returns an error code (0 = success, failed if < 0)
  */
 int imx_scu_get_handle(struct imx_sc_ipc **ipc);
+#else
+static inline int imx_scu_call_rpc(struct imx_sc_ipc *ipc, void *msg,
+				   bool have_resp)
+{
+	return -ENOTSUPP;
+}
+
+static inline int imx_scu_get_handle(struct imx_sc_ipc **ipc)
+{
+	return -ENOTSUPP;
+}
+#endif
 #endif /* _SC_IPC_H */
diff --git a/include/linux/firmware/imx/sci.h b/include/linux/firmware/imx/sci.h
index 22c76571a294..5cc63fe7e84d 100644
--- a/include/linux/firmware/imx/sci.h
+++ b/include/linux/firmware/imx/sci.h
@@ -16,9 +16,36 @@
 #include <linux/firmware/imx/svc/pm.h>
 #include <linux/firmware/imx/svc/rm.h>
 
+#if IS_ENABLED(CONFIG_IMX_SCU)
 int imx_scu_enable_general_irq_channel(struct device *dev);
 int imx_scu_irq_register_notifier(struct notifier_block *nb);
 int imx_scu_irq_unregister_notifier(struct notifier_block *nb);
 int imx_scu_irq_group_enable(u8 group, u32 mask, u8 enable);
 int imx_scu_soc_init(struct device *dev);
+#else
+static inline int imx_scu_soc_init(struct device *dev)
+{
+	return -ENOTSUPP;
+}
+
+static inline int imx_scu_enable_general_irq_channel(struct device *dev)
+{
+	return -ENOTSUPP;
+}
+
+static inline int imx_scu_irq_register_notifier(struct notifier_block *nb)
+{
+	return -ENOTSUPP;
+}
+
+static inline int imx_scu_irq_unregister_notifier(struct notifier_block *nb)
+{
+	return -ENOTSUPP;
+}
+
+static inline int imx_scu_irq_group_enable(u8 group, u32 mask, u8 enable)
+{
+	return -ENOTSUPP;
+}
+#endif
 #endif /* _SC_SCI_H */
diff --git a/include/linux/firmware/imx/svc/misc.h b/include/linux/firmware/imx/svc/misc.h
index 031dd4d3c766..760db08a67fc 100644
--- a/include/linux/firmware/imx/svc/misc.h
+++ b/include/linux/firmware/imx/svc/misc.h
@@ -46,6 +46,7 @@ enum imx_misc_func {
  * Control Functions
  */
 
+#ifdef CONFIG_IMX_SCU
 int imx_sc_misc_set_control(struct imx_sc_ipc *ipc, u32 resource,
 			    u8 ctrl, u32 val);
 
@@ -54,5 +55,23 @@ int imx_sc_misc_get_control(struct imx_sc_ipc *ipc, u32 resource,
 
 int imx_sc_pm_cpu_start(struct imx_sc_ipc *ipc, u32 resource,
 			bool enable, u64 phys_addr);
+#else
+static inline int imx_sc_misc_set_control(struct imx_sc_ipc *ipc,
+					  u32 resource, u8 ctrl, u32 val)
+{
+	return -ENOTSUPP;
+}
 
+static inline int imx_sc_misc_get_control(struct imx_sc_ipc *ipc,
+					  u32 resource, u8 ctrl, u32 *val)
+{
+	return -ENOTSUPP;
+}
+
+static inline int imx_sc_pm_cpu_start(struct imx_sc_ipc *ipc, u32 resource,
+				      bool enable, u64 phys_addr)
+{
+	return -ENOTSUPP;
+}
+#endif
 #endif /* _SC_MISC_API_H */
-- 
2.28.0