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From:   Sunil V L <sunilvl@ventanamicro.com>
To:     linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        linux-riscv@lists.infradead.org, linux-acpi@vger.kernel.org,
        linux-pci@vger.kernel.org, linux-serial@vger.kernel.org
Cc:     Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will@kernel.org>,
        Paul Walmsley <paul.walmsley@sifive.com>,
        Palmer Dabbelt <palmer@dabbelt.com>,
        Albert Ou <aou@eecs.berkeley.edu>,
        "Rafael J . Wysocki" <rafael@kernel.org>,
        Len Brown <lenb@kernel.org>,
        Bjorn Helgaas <bhelgaas@google.com>,
        Anup Patel <anup@brainfault.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Jiri Slaby <jirislaby@kernel.org>,
        Conor Dooley <conor.dooley@microchip.com>,
        Andrew Jones <ajones@ventanamicro.com>,
        Atish Kumar Patra <atishp@rivosinc.com>,
        Haibo Xu <haibo1.xu@intel.com>,
        Sunil V L <sunilvl@ventanamicro.com>
Subject: [RFC PATCH v2 21/21] ACPI: RISC-V: Create PLIC platform device
Date:   Thu, 26 Oct 2023 01:53:44 +0530
Message-Id: <20231025202344.581132-22-sunilvl@ventanamicro.com>
In-Reply-To: <20231025202344.581132-1-sunilvl@ventanamicro.com>
References: <20231025202344.581132-1-sunilvl@ventanamicro.com>
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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 <sunilvl@ventanamicro.com>
---
 drivers/acpi/riscv/init.c |  1 +
 drivers/acpi/riscv/init.h |  1 +
 drivers/acpi/riscv/irq.c  | 14 ++++++++++++++
 3 files changed, 16 insertions(+)

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);
+}
-- 
2.39.2