linux-kernel - [PATCH 06/10] ARM: mach-airoha: Rework support and directory structure

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Date:   Mon, 6 Mar 2023 10:34:37 -0600
From:   Andrew Davis <afd@...com>
To:     Russell King <linux@...linux.org.uk>,
        Baruch Siach <baruch@...s.co.il>,
        Vladimir Zapolskiy <vz@...ia.com>,
        Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Arnd Bergmann <arnd@...db.de>,
        Nick Hawkins <nick.hawkins@....com>,
        Oleksij Rempel <linux@...pel-privat.de>,
        Andreas Färber <afaerber@...e.de>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Allison Randal <allison@...utok.net>,
        Thomas Gleixner <tglx@...utronix.de>,
        Qin Jian <qinjian@...lus1.com>
CC:     <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, Andrew Davis <afd@...com>
Subject: [PATCH 06/10] ARM: mach-airoha: Rework support and directory structure

Having a platform need a mach-* directory should be seen as a negative,
it means the platform needs special non-standard handling. ARM64 support
does not allow mach-* directories at all. While we may not get to that
given all the non-standard architectures we support, we should still try
to get as close as we can and reduce the number of mach directories.

The mach-airoha/ directory, and files within, provide just one "feature":
having the kernel print the machine name if the DTB does not also contain
a "model" string (which they always do). To reduce the number of mach-*
directories let's do without that feature and remove this directory.

It also seems there was a copy/paste error and the "MEDIATEK_DT"
name was re-used in the DT_MACHINE_START macro. This may have caused
conflicts if this was built in a multi-arch configuration.

Signed-off-by: Andrew Davis <afd@...com>
---
 arch/arm/Kconfig              | 11 -----------
 arch/arm/Kconfig.platforms    | 11 +++++++++++
 arch/arm/Makefile             |  1 -
 arch/arm/mach-airoha/Makefile |  2 --
 arch/arm/mach-airoha/airoha.c | 16 ----------------
 5 files changed, 11 insertions(+), 30 deletions(-)
 delete mode 100644 arch/arm/mach-airoha/Makefile
 delete mode 100644 arch/arm/mach-airoha/airoha.c

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 02f284681994..e8ac56398f76 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -338,17 +338,6 @@ config ARCH_MULTIPLATFORM
 
 source "arch/arm/Kconfig.platforms"
 
-config ARCH_AIROHA
-	bool "Airoha SoC Support"
-	depends on ARCH_MULTI_V7
-	select ARM_AMBA
-	select ARM_GIC
-	select ARM_GIC_V3
-	select ARM_PSCI
-	select HAVE_ARM_ARCH_TIMER
-	help
-	  Support for Airoha EN7523 SoCs
-
 #
 # This is sorted alphabetically by mach-* pathname.  However, plat-*
 # Kconfigs may be included either alphabetically (according to the
diff --git a/arch/arm/Kconfig.platforms b/arch/arm/Kconfig.platforms
index 4b5fad18ca8b..38457d5a18ff 100644
--- a/arch/arm/Kconfig.platforms
+++ b/arch/arm/Kconfig.platforms
@@ -67,6 +67,17 @@ config ARCH_VIRT
 	select ARM_PSCI
 	select HAVE_ARM_ARCH_TIMER
 
+config ARCH_AIROHA
+	bool "Airoha SoC Support"
+	depends on ARCH_MULTI_V7
+	select ARM_AMBA
+	select ARM_GIC
+	select ARM_GIC_V3
+	select ARM_PSCI
+	select HAVE_ARM_ARCH_TIMER
+	help
+	  Support for Airoha EN7523 SoCs
+
 config MACH_ASM9260
 	bool "Alphascale ASM9260"
 	depends on ARCH_MULTI_V5
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index f861204fcd4e..d146db4ce15d 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -167,7 +167,6 @@ textofs-$(CONFIG_ARCH_AXXIA) := 0x00308000
 # Machine directory name.  This list is sorted alphanumerically
 # by CONFIG_* macro name.
 machine-$(CONFIG_ARCH_ACTIONS)		+= actions
-machine-$(CONFIG_ARCH_AIROHA)		+= airoha
 machine-$(CONFIG_ARCH_ALPINE)		+= alpine
 machine-$(CONFIG_ARCH_ARTPEC)		+= artpec
 machine-$(CONFIG_ARCH_ASPEED)           += aspeed
diff --git a/arch/arm/mach-airoha/Makefile b/arch/arm/mach-airoha/Makefile
deleted file mode 100644
index a5857d0d02eb..000000000000
--- a/arch/arm/mach-airoha/Makefile
+++ /dev/null
@@ -1,2 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-obj-y			+= airoha.o
diff --git a/arch/arm/mach-airoha/airoha.c b/arch/arm/mach-airoha/airoha.c
deleted file mode 100644
index ea23b5abb478..000000000000
--- a/arch/arm/mach-airoha/airoha.c
+++ /dev/null
@@ -1,16 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Device Tree support for Airoha SoCs
- *
- * Copyright (c) 2022 Felix Fietkau <nbd@....name>
- */
-#include <asm/mach/arch.h>
-
-static const char * const airoha_board_dt_compat[] = {
-	"airoha,en7523",
-	NULL,
-};
-
-DT_MACHINE_START(MEDIATEK_DT, "Airoha Cortex-A53 (Device Tree)")
-	.dt_compat	= airoha_board_dt_compat,
-MACHINE_END
-- 
2.39.2