[PATCH V5 7/9] firmware: imx: scu-irq: export imx_scu_irq_get_status

Peng Fan (OSS)
2023-07-31T09:02:14Z

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

Cleanup code to export imx_scu_irq_get_status API to make it could
be used by others, such as SECO.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
drivers/firmware/imx/imx-scu-irq.c | 40 ++++++++++++++++++++----------
include/linux/firmware/imx/sci.h | 6 +++++
2 files changed, 33 insertions(+), 13 deletions(-)

diff --git a/drivers/firmware/imx/imx-scu-irq.c b/drivers/firmware/imx/imx-scu-irq.c
index 4408f150b3d5..6549f3792a0f 100644
--- a/drivers/firmware/imx/imx-scu-irq.c
+++ b/drivers/firmware/imx/imx-scu-irq.c
@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0+
/*
- * Copyright 2019 NXP
+ * Copyright 2019,2023 NXP
*
* Implementation of the SCU IRQ functions using MU.
*
@@ -66,29 +66,18 @@ static int imx_scu_irq_notifier_call_chain(unsigned long status, u8 *group)

static void imx_scu_irq_work_handler(struct work_struct *work)
{
- struct imx_sc_msg_irq_get_status msg;
- struct imx_sc_rpc_msg *hdr = &msg.hdr;
u32 irq_status;
int ret;
u8 i;

for (i = 0; i < IMX_SC_IRQ_NUM_GROUP; i++) {
- hdr->ver = IMX_SC_RPC_VERSION;
- hdr->svc = IMX_SC_RPC_SVC_IRQ;
- hdr->func = IMX_SC_IRQ_FUNC_STATUS;
- hdr->size = 2;
-
- msg.data.req.resource = mu_resource_id;
- msg.data.req.group = i;
-
- ret = imx_scu_call_rpc(imx_sc_irq_ipc_handle, &msg, true);
+ ret = imx_scu_irq_get_status(i, &irq_status);
if (ret) {
pr_err("get irq group %d status failed, ret %d\n",
i, ret);
return;
}

- irq_status = msg.data.resp.status;
if (!irq_status)
continue;

@@ -97,6 +86,31 @@ static void imx_scu_irq_work_handler(struct work_struct *work)
}
}

+int imx_scu_irq_get_status(u8 group, u32 *irq_status)
+{
+ struct imx_sc_msg_irq_get_status msg;
+ struct imx_sc_rpc_msg *hdr = &msg.hdr;
+ int ret;
+
+ hdr->ver = IMX_SC_RPC_VERSION;
+ hdr->svc = IMX_SC_RPC_SVC_IRQ;
+ hdr->func = IMX_SC_IRQ_FUNC_STATUS;
+ hdr->size = 2;
+
+ msg.data.req.resource = mu_resource_id;
+ msg.data.req.group = group;
+
+ ret = imx_scu_call_rpc(imx_sc_irq_ipc_handle, &msg, true);
+ if (ret)
+ return ret;
+
+ if (irq_status)
+ *irq_status = msg.data.resp.status;
+
+ return 0;
+}
+EXPORT_SYMBOL(imx_scu_irq_get_status);
+
int imx_scu_irq_group_enable(u8 group, u32 mask, u8 enable)
{
struct imx_sc_msg_irq_enable msg;
diff --git a/include/linux/firmware/imx/sci.h b/include/linux/firmware/imx/sci.h
index 7fa0f3b329b5..df17196df5ff 100644
--- a/include/linux/firmware/imx/sci.h
+++ b/include/linux/firmware/imx/sci.h
@@ -21,6 +21,7 @@ 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_irq_get_status(u8 group, u32 *irq_status);
int imx_scu_soc_init(struct device *dev);
#else
static inline int imx_scu_soc_init(struct device *dev)
@@ -47,5 +48,10 @@ static inline int imx_scu_irq_group_enable(u8 group, u32 mask, u8 enable)
{
return -EOPNOTSUPP;
}
+
+static inline int imx_scu_irq_get_status(u8 group, u32 *irq_status)
+{
+ return -EOPNOTSUPP;
+}
#endif
#endif /* _SC_SCI_H */
--
2.37.1