[RFC,v2,21/21] ACPI: RISC-V: Create PLIC platform device

Commit Message

Sunil V L Oct. 25, 2023, 8:23 p.m. UTC

Since PLIC needs to be a platform device, probe the MADT and create
platform devices for each PLIC in the system.

Signed-off-by: Sunil V L <[e-mail]>
---
 drivers/acpi/riscv/init.c |  1 +
 drivers/acpi/riscv/init.h |  1 +
 drivers/acpi/riscv/irq.c  | 14 ++++++++++++++
 3 files changed, 16 insertions(+)

Patch

diff --git a/drivers/acpi/riscv/init.c b/drivers/acpi/riscv/init.c
index e7eff7ab1474..c6fd4097e8ae 100644
--- a/drivers/acpi/riscv/init.c
+++ b/drivers/acpi/riscv/init.c
@@ -11,4 +11,5 @@ 
 void __init acpi_riscv_init(void)
 {
 	riscv_acpi_aplic_platform_init();
+	riscv_acpi_plic_platform_init();
 }
diff --git a/drivers/acpi/riscv/init.h b/drivers/acpi/riscv/init.h
index 17bcf0baaadb..b4b305d83b3a 100644
--- a/drivers/acpi/riscv/init.h
+++ b/drivers/acpi/riscv/init.h
@@ -3,3 +3,4 @@ 
 
 void __init riscv_acpi_imsic_platform_init(void);
 void __init riscv_acpi_aplic_platform_init(void);
+void __init riscv_acpi_plic_platform_init(void);
diff --git a/drivers/acpi/riscv/irq.c b/drivers/acpi/riscv/irq.c
index fbccecdcbf8b..90b0738e2b9f 100644
--- a/drivers/acpi/riscv/irq.c
+++ b/drivers/acpi/riscv/irq.c
@@ -104,3 +104,17 @@  void __init riscv_acpi_aplic_platform_init(void)
 {
 	acpi_table_parse_madt(ACPI_MADT_TYPE_APLIC, aplic_parse_madt, 0);
 }
+
+static int __init plic_parse_madt(union acpi_subtable_headers *header,
+				  const unsigned long end)
+{
+	struct acpi_madt_plic *plic = (struct acpi_madt_plic *)header;
+
+	return irqchip_add_platform_device("riscv-plic", plic->id, plic->base_addr,
+					   plic->size, header);
+}
+
+void __init riscv_acpi_plic_platform_init(void)
+{
+	acpi_table_parse_madt(ACPI_MADT_TYPE_PLIC, plic_parse_madt, 0);
+}