linux-kernel - [PATCH 10/12] powerpc: wiiu: platform support

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Message-Id: <20220302044406.63401-11-ash@heyquark.com>
Date:   Wed,  2 Mar 2022 15:44:04 +1100
From:   Ash Logan <ash@...quark.com>
To:     paulus@...ba.org, mpe@...erman.id.au, christophe.leroy@...roup.eu,
        robh+dt@...nel.org, benh@...nel.crashing.org
Cc:     linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        j.ne@...teo.net, Roberto Van Eeden <rw-r-r-0644@...tonmail.com>,
        Emmanuel Gil Peyrot <linkmauve@...kmauve.fr>
Subject: [PATCH 10/12] powerpc: wiiu: platform support

Add platform support for the Nintendo Wii U console.

Signed-off-by: Ash Logan <ash@...quark.com>
Co-developed-by: Roberto Van Eeden <rw-r-r-0644@...tonmail.com>
Signed-off-by: Roberto Van Eeden <rw-r-r-0644@...tonmail.com>
Co-developed-by: Emmanuel Gil Peyrot <linkmauve@...kmauve.fr>
Signed-off-by: Emmanuel Gil Peyrot <linkmauve@...kmauve.fr>
---
 arch/powerpc/platforms/wiiu/Makefile |  2 +-
 arch/powerpc/platforms/wiiu/setup.c  | 67 ++++++++++++++++++++++++++++
 2 files changed, 68 insertions(+), 1 deletion(-)
 create mode 100644 arch/powerpc/platforms/wiiu/setup.c

diff --git a/arch/powerpc/platforms/wiiu/Makefile b/arch/powerpc/platforms/wiiu/Makefile
index fa16c60261e6..abcb7a1beebf 100644
--- a/arch/powerpc/platforms/wiiu/Makefile
+++ b/arch/powerpc/platforms/wiiu/Makefile
@@ -1,4 +1,4 @@
 # SPDX-License-Identifier: GPL-2.0
 
-obj-$(CONFIG_WIIU) += espresso-pic.o latte-pic.o
+obj-$(CONFIG_WIIU) += setup.o espresso-pic.o latte-pic.o
 obj-$(CONFIG_LATTEIPC_UDBG) += udbg_latteipc.o
diff --git a/arch/powerpc/platforms/wiiu/setup.c b/arch/powerpc/platforms/wiiu/setup.c
new file mode 100644
index 000000000000..279fa899a296
--- /dev/null
+++ b/arch/powerpc/platforms/wiiu/setup.c
@@ -0,0 +1,67 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Nintendo Wii U board-specific support
+ *
+ * Copyright (C) 2022 The linux-wiiu Team
+ */
+#define DRV_MODULE_NAME "wiiu"
+#define pr_fmt(fmt) DRV_MODULE_NAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/of_platform.h>
+
+#include <asm/machdep.h>
+#include <asm/udbg.h>
+
+#include "espresso-pic.h"
+#include "latte-pic.h"
+#include "udbg_latteipc.h"
+
+static int __init wiiu_probe(void)
+{
+	if (!of_machine_is_compatible("nintendo,wiiu"))
+		return 0;
+
+	latteipc_udbg_init();
+
+	return 1;
+}
+
+static void __noreturn wiiu_halt(void)
+{
+	for (;;)
+		cpu_relax();
+}
+
+static void __init wiiu_init_irq(void)
+{
+	espresso_pic_init();
+	latte_pic_init();
+}
+
+static const struct of_device_id wiiu_of_bus[] = {
+	{
+		.compatible = "nintendo,latte",
+	},
+	{},
+};
+
+static int __init wiiu_device_probe(void)
+{
+	if (!machine_is(wiiu))
+		return 0;
+
+	of_platform_populate(NULL, wiiu_of_bus, NULL, NULL);
+	return 0;
+}
+device_initcall(wiiu_device_probe);
+
+define_machine(wiiu) {
+	.name = "wiiu",
+	.probe = wiiu_probe,
+	.halt = wiiu_halt,
+	.progress = udbg_progress,
+	.calibrate_decr = generic_calibrate_decr,
+	.init_IRQ = wiiu_init_irq,
+	.get_irq = espresso_pic_get_irq,
+};
-- 
2.35.1