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, 57 deletions

diff --git a/arch/avr32/lib/delay.c b/arch/avr32/lib/delay.c
deleted file mode 100644
index c2f4a07dcda1..000000000000
--- a/arch/avr32/lib/delay.c
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- *      Precise Delay Loops for avr32
- *
- *      Copyright (C) 1993 Linus Torvalds
- *      Copyright (C) 1997 Martin Mares <mj@atrey.karlin.mff.cuni.cz>
- *	Copyright (C) 2005-2006 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.
- */
-
-#include <linux/delay.h>
-#include <linux/module.h>
-#include <linux/timex.h>
-#include <linux/param.h>
-#include <linux/types.h>
-#include <linux/init.h>
-
-#include <asm/processor.h>
-#include <asm/sysreg.h>
-
-int read_current_timer(unsigned long *timer_value)
-{
-	*timer_value = sysreg_read(COUNT);
-	return 0;
-}
-
-void __delay(unsigned long loops)
-{
-	unsigned bclock, now;
-
-	bclock = sysreg_read(COUNT);
-	do {
-		now = sysreg_read(COUNT);
-	} while ((now - bclock) < loops);
-}
-
-inline void __const_udelay(unsigned long xloops)
-{
-	unsigned long long loops;
-
-	asm("mulu.d %0, %1, %2"
-	    : "=r"(loops)
-	    : "r"(current_cpu_data.loops_per_jiffy * HZ), "r"(xloops));
-	__delay(loops >> 32);
-}
-
-void __udelay(unsigned long usecs)
-{
-	__const_udelay(usecs * 0x000010c7); /* 2**32 / 1000000 (rounded up) */
-}
-
-void __ndelay(unsigned long nsecs)
-{
-	__const_udelay(nsecs * 0x00005); /* 2**32 / 1000000000 (rounded up) */
-}