avr32: remove support for AVR32 architecture

This patch drops support for AVR32 architecture from the Linux kernel.

The AVR32 architecture is not keeping up with the development of the
kernel, and since it shares so much of the drivers with Atmel ARM SoC,
it is starting to hinder these drivers to develop swiftly.

Also, all AVR32 AP7 SoC processors are end of lifed from Atmel (now
Microchip).

Finally, the GCC toolchain is stuck at version 4.2.x, and has not
received any patches since the last release from Atmel;
4.2.4-atmel.1.1.3.avr32linux.1. When building kernel v4.10, this
toolchain is no longer able to properly link the network stack.

Haavard and I have came to the conclusion that we feel keeping AVR32 on
life support offers more obstacles for Atmel ARMs, than it gives joy to
AVR32 users. I also suspect there are very few AVR32 users left today,
if anybody at all.

Signed-off-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no>
Signed-off-by: Håvard Skinnemoen <hskinnemoen@gmail.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>

1 files changed, 0 insertions, 61 deletions

diff --git a/arch/avr32/include/asm/irqflags.h b/arch/avr32/include/asm/irqflags.h
deleted file mode 100644
index 006e9487372d..000000000000
--- a/arch/avr32/include/asm/irqflags.h
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- * Copyright (C) 2004-2006 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#ifndef __ASM_AVR32_IRQFLAGS_H
-#define __ASM_AVR32_IRQFLAGS_H
-
-#include <linux/types.h>
-#include <asm/sysreg.h>
-
-static inline unsigned long arch_local_save_flags(void)
-{
-	return sysreg_read(SR);
-}
-
-/*
- * This will restore ALL status register flags, not only the interrupt
- * mask flag.
- *
- * The empty asm statement informs the compiler of this fact while
- * also serving as a barrier.
- */
-static inline void arch_local_irq_restore(unsigned long flags)
-{
-	sysreg_write(SR, flags);
-	asm volatile("" : : : "memory", "cc");
-}
-
-static inline void arch_local_irq_disable(void)
-{
-	asm volatile("ssrf %0" : : "n"(SYSREG_GM_OFFSET) : "memory");
-}
-
-static inline void arch_local_irq_enable(void)
-{
-	asm volatile("csrf %0" : : "n"(SYSREG_GM_OFFSET) : "memory");
-}
-
-static inline bool arch_irqs_disabled_flags(unsigned long flags)
-{
-	return (flags & SYSREG_BIT(GM)) != 0;
-}
-
-static inline bool arch_irqs_disabled(void)
-{
-	return arch_irqs_disabled_flags(arch_local_save_flags());
-}
-
-static inline unsigned long arch_local_irq_save(void)
-{
-	unsigned long flags = arch_local_save_flags();
-
-	arch_local_irq_disable();
-
-	return flags;
-}
-
-#endif /* __ASM_AVR32_IRQFLAGS_H */