linux-kernel - [PATCH 11/14] ARM: lpc32xx: allow multiplatform build

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Message-Id: <20190731195713.3150463-12-arnd@arndb.de>
Date:   Wed, 31 Jul 2019 21:56:53 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     soc@...nel.org, linux-arm-kernel@...ts.infradead.org,
        Vladimir Zapolskiy <vz@...ia.com>,
        Sylvain Lemieux <slemieux.tyco@...il.com>,
        Russell King <linux@...linux.org.uk>,
        Gregory Clement <gregory.clement@...tlin.com>,
        Linus Walleij <linus.walleij@...aro.org>
Cc:     Jason Cooper <jason@...edaemon.net>, Andrew Lunn <andrew@...n.ch>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Alan Stern <stern@...land.harvard.edu>,
        Guenter Roeck <linux@...ck-us.net>, linux-gpio@...r.kernel.org,
        netdev@...r.kernel.org, linux-serial@...r.kernel.org,
        linux-usb@...r.kernel.org, linux-watchdog@...r.kernel.org,
        Arnd Bergmann <arnd@...db.de>, linux-kernel@...r.kernel.org
Subject: [PATCH 11/14] ARM: lpc32xx: allow multiplatform build

All preparation work is done, so the platform can finally
be moved into ARCH_MULTIPLATFORM. This requires a small
change to the defconfig file to enable the platform.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 arch/arm/Kconfig                              | 17 +------
 arch/arm/configs/lpc32xx_defconfig            |  1 +
 arch/arm/mach-lpc32xx/Kconfig                 | 11 +++++
 .../mach-lpc32xx/include/mach/uncompress.h    | 48 -------------------
 4 files changed, 14 insertions(+), 63 deletions(-)
 create mode 100644 arch/arm/mach-lpc32xx/Kconfig
 delete mode 100644 arch/arm/mach-lpc32xx/include/mach/uncompress.h

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 33b00579beff..65808e17cb3b 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -478,21 +478,6 @@ config ARCH_W90X900
 	  <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
 		ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
 
-config ARCH_LPC32XX
-	bool "NXP LPC32XX"
-	select ARM_AMBA
-	select CLKDEV_LOOKUP
-	select CLKSRC_LPC32XX
-	select COMMON_CLK
-	select CPU_ARM926T
-	select GENERIC_CLOCKEVENTS
-	select GENERIC_IRQ_MULTI_HANDLER
-	select GPIOLIB
-	select SPARSE_IRQ
-	select USE_OF
-	help
-	  Support for the NXP LPC32XX family of processors
-
 config ARCH_PXA
 	bool "PXA2xx/PXA3xx-based"
 	depends on MMU
@@ -746,6 +731,8 @@ source "arch/arm/mach-keystone/Kconfig"
 
 source "arch/arm/mach-ks8695/Kconfig"
 
+source "arch/arm/mach-lpc32xx/Kconfig"
+
 source "arch/arm/mach-mediatek/Kconfig"
 
 source "arch/arm/mach-meson/Kconfig"
diff --git a/arch/arm/configs/lpc32xx_defconfig b/arch/arm/configs/lpc32xx_defconfig
index 0cdc6c7974b3..2d75bd8dbaf0 100644
--- a/arch/arm/configs/lpc32xx_defconfig
+++ b/arch/arm/configs/lpc32xx_defconfig
@@ -12,6 +12,7 @@ CONFIG_CC_OPTIMIZE_FOR_SIZE=y
 CONFIG_SYSCTL_SYSCALL=y
 CONFIG_EMBEDDED=y
 CONFIG_SLAB=y
+# CONFIG_ARCH_MULTI_V7 is not set
 CONFIG_ARCH_LPC32XX=y
 CONFIG_AEABI=y
 CONFIG_ZBOOT_ROM_TEXT=0x0
diff --git a/arch/arm/mach-lpc32xx/Kconfig b/arch/arm/mach-lpc32xx/Kconfig
new file mode 100644
index 000000000000..ec87c65f4536
--- /dev/null
+++ b/arch/arm/mach-lpc32xx/Kconfig
@@ -0,0 +1,11 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
+config ARCH_LPC32XX
+	bool "NXP LPC32XX"
+	depends on ARCH_MULTI_V5
+	select ARM_AMBA
+	select CLKSRC_LPC32XX
+	select CPU_ARM926T
+	select GPIOLIB
+	help
+	  Support for the NXP LPC32XX family of processors
diff --git a/arch/arm/mach-lpc32xx/include/mach/uncompress.h b/arch/arm/mach-lpc32xx/include/mach/uncompress.h
deleted file mode 100644
index 74b7aa0da0e4..000000000000
--- a/arch/arm/mach-lpc32xx/include/mach/uncompress.h
+++ /dev/null
@@ -1,48 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- * arch/arm/mach-lpc32xx/include/mach/uncompress.h
- *
- * Author: Kevin Wells <kevin.wells@....com>
- *
- * Copyright (C) 2010 NXP Semiconductors
- */
-
-#ifndef __ASM_ARM_ARCH_UNCOMPRESS_H
-#define __ASM_ARM_ARCH_UNCOMPRESS_H
-
-#include <linux/io.h>
-
-/*
- * Uncompress output is hardcoded to standard UART 5
- */
-
-#define UART_FIFO_CTL_TX_RESET	(1 << 2)
-#define UART_STATUS_TX_MT	(1 << 6)
-#define LPC32XX_UART5_BASE	0x40090000
-
-#define _UARTREG(x)		(void __iomem *)(LPC32XX_UART5_BASE + (x))
-
-#define LPC32XX_UART_DLLFIFO_O	0x00
-#define LPC32XX_UART_IIRFCR_O	0x08
-#define LPC32XX_UART_LSR_O	0x14
-
-static inline void putc(int ch)
-{
-	/* Wait for transmit FIFO to empty */
-	while ((__raw_readl(_UARTREG(LPC32XX_UART_LSR_O)) &
-		UART_STATUS_TX_MT) == 0)
-		;
-
-	__raw_writel((u32) ch, _UARTREG(LPC32XX_UART_DLLFIFO_O));
-}
-
-static inline void flush(void)
-{
-	__raw_writel(__raw_readl(_UARTREG(LPC32XX_UART_IIRFCR_O)) |
-		UART_FIFO_CTL_TX_RESET, _UARTREG(LPC32XX_UART_IIRFCR_O));
-}
-
-/* NULL functions; we don't presently need them */
-#define arch_decomp_setup()
-
-#endif
-- 
2.20.0